dataset string | id string | question string | choices list | rationale string | answer string | subject string |
|---|---|---|---|---|---|---|
mmlu_stem | mmlu_stem_17188 | Which gas accounts for the largest percentage of greenhouse gases in the atmosphere? | [
"carbon monoxide",
"carbon dioxide",
"nitrous oxide",
"water vapor"
] | null | D | |
mmlu_stem | mmlu_stem_4813 | Are you sometimes a little tired and sleepy in the early afternoon? Many people feel this way after lunch.They may think eating lunch is the cause of the sleepiness.Or,in summer, they may think it is the heat.However, the real reason lies inside their bodies.At that time--about eight hours after you wake up--your body temperature goes down.This is what makes you slow down and feel sleepy.Scientists have tested sleep habits in experiments where there was no night or day.The people in these experiments almost always followed a similar sleeping pattern. They slept for one long period and then for one short period about eight hours later. In many parts of the world,people take naps in the middle of the day.This is especially true in warmer climate ,where the heat makes work difficult in the early afternoon.Researchers are now saying that naps are good for everyone in any climate.A daily nap gives one a more rested body and mind and therefore is good for health in general.In countries where naps are traditional,people often suffer less from problem such as heart disease. Many working people,unfortunately, have no time to take naps.Though doctors may advise taking naps,employers do not allow it! If you do have the chance,however,here are a few tips about making the most of your nap.Remember that the best time to take a nap is about eight hours after you get up.A short sleep too late in the day may only make you feel more tired and sleepy afterward.This can also happen if you sleep for too long.If you do not have enough time,try a short nap--even ten minutes of sleep can help you. If you get up at 6:30 a.m,what is the best time for you to take a nap? | [
"About 12:30 p.m.",
"About 1:30 p.m.",
"About 2:30 p.m.",
"About 3:30 p.m."
] | null | C | |
mmlu_stem | mmlu_stem_7932 | If humans were truly at home under the light of the moon and stars,we would go in darkness happily,the midnight world as visible to us as it is to the vast number of nocturnal species on this planet. Instead,we are diurnal creatures, with eyes adapted to living in the sun's light. This is a basic evolutionary fact, even though most of us don't think of ourselves as diurnal beings. Yet it's the only way to explain what we've done to the night: We've engineered it to receive us by filling _ with light. The benefits of this kind of engineering come with consequences called light pollution whose effects scientists are only now beginning to study. Light pollution is largely the result of bad lighting design,which allows artificial light to shine outward and upward into the sky. III-designed lighting washes out the darkness of night and completely changes the light levels and light rhythms -- to which many forms of life, including, ourselves, have adapted. Wherever human light spills into the natural world, some aspect or life is affected . In most cities the sky looks as though it has been emptied of stars, leaving behind a vacant haze that mirrors our fear of the dark. We've grown so used to this orange haze that the original glory of an unlit nigh, - dark enough for the planet Venus to throw shadow on Earth, is wholly beyond our experience, beyond memory almost. We've lit up the night as if it were an unoccupied country, when nothing could be further form the truth. Among mammals alone, the number of nocturnal species is astonishing, Light is a powerful biological force, and on many species it acts as a magnet . The effect is so powerful that scientists speak of songbirds and seabirds being "captured" by searchlights on land or by the light from gas flares on marine oil platforms. Migrating at night, birds tend to collide with brightly lit tall buildings. Frogs living near brightly lit highways suffer nocturnal light levels that are as much as a million times righter than normal, throwing nearly every aspect of their behavior out of joint including most other creatures ,we do need darkness .Darkness is as essential to our biological welfare, to our internal clockwork, as light itself. Living in a glare of our making,we have cut ourselves off from our evolutionary and cultural heritage--the light of the stars and the rhythms of day and night .In a very real sense light pollution causes us to lose sight of our true place in the universe, to forget the scale of our being, which is best measured against the dimensions of a deep night with the Milky Way--the edge of our galaxy arching overhead. The writer mentions birds and frogs to _ | [
"provide examples of animal protection",
"show how light pollution affects animals",
"compare the living habits of both species",
"explain why the number of certain species has declined"
] | null | B | |
mmlu_stem | mmlu_stem_17664 | When an atom has a neutral charge, which particles within the atom have equal numbers? | [
"electrons and neutrons",
"protons and electrons",
"neutrons and protons",
"ions and neutrons"
] | null | B | |
mmlu_stem | mmlu_stem_11572 | Boom boom!( I'm here, come to me!) Krak krak!( Watch out, aleopard !) Hok hok hok!( Hey, crowned eagle!) Very good -- you've already mastered half the basic vocabulary of the Campbell's monkey, which lives in the forests of the Tai National Park in Ivory Coast. The adult males have six types of call, each with a specific meaning, but they can mix two or more calls together into a message with a different meaning. Having spent months recording the monkeys' calls in response to both natural and artificialstimuli , a group led by Klaus Zuberbuhler of the University of St. Andrews in Scotland argues that the Campbell's monkeys have a certain form ofsyntax . This is likely to be controversial because despite great effort to teachchimpanzees language, they showed little or no ability to combine the sounds they learned into a sentence with a larger meaning. Syntax, basic to the structure of language, uniquely belongs to humans. "Krak" is a call that warns of leopards in the neighborhood. The monkeys give it in response to real leopards and to leopard shouting broadcast by the researchers. The monkeys can vary the call by adding "-oo": "Krak-oo" seems to be a general word for hunter, but one given in a special context - when monkeys hear but don't see a hunter, or when they hear the alarm calls of another species. The "boom-boom" call invites other monkeys to come toward the male making the sound. Two booms can be combined with a series of "krak-oos", with a meaning entirely different to that of either of its single parts. "Boom boom krak-oo krak-oo krak-oo" is the monkey's version of "Timber!" - it warns of falling trees. If Zuberbuhler is correct, the Campbell's monkeys can both vary the meaning of specific calls by adding something and combine calls to make a different meaning. If the Campbell's monkeys hear a lion's shouting, they will call " _ ". | [
"Krak",
"Boom",
"Boom boom krak-oo krak-oo krak-oo",
"Krak-oo"
] | null | D | |
mmlu_stem | mmlu_stem_16035 | Little Smart or Xiaolingtong is becoming more and more popular in China. But you can use it only in your city. If you go to another city, it will have no use. It looks like a mobile phone, but the service( )is quite cheap. We only need to pay about 20 yuan a month for the line and about 0.1 yuan each minute for the talk. What's more, you don't have to pay any money when someone else calls you. But little Smart is not really so smart. Users often complain about( ) its bad voice. " I can't make or get a phone call when I am on a bus," a person in Hangzhou said. Scientists are trying their best to make Little Smart smarter. And the latest Little Smart even has a color screen. The latest Little Smart _ . | [
"has good sounds",
"has a colour screen( )",
"has a bad voice",
"is not smarter"
] | null | C | |
mmlu_stem | mmlu_stem_7954 | Everyone is familiar with white fat, which serves as an energy warehouse. Many mammals also have brown fat, which has the unique ability to produce heat. Brown fat is sometimes mistaken for a type of gland , which it resembles more than white fat. It varies in color1 from dark red to tan. When the animal is exposed to a cold environment, the color1 darkens. In contrast to white fat, brown fat has numerous nerves which provide sympathetic stimulation to the fat cells. Brown fat is most noticeable in newborn animals, wrapped round the central organs to keep them warm. In human infants it occupies up to 5% of body weight, then declines gradually. Certain quantities of brown fat can be discovered in adult humans, especially when they are exposed to cold temperatures. Most of brown fat in adults is located in the lower neck. Exposure to cold leads to sympathetic stimulation of brown fat cell. As in white fat, sympathetic stimulation promotes hydrolysis of triglyceride , with release of fatty acids. In contrast to other cells, including white fat cells, brown fat cells express UCP1, which gives the cell's mitochondria an ability to produce heat rather than ATP. Within brown fat cells, most fatty acids are immediately combined with oxygen in mitochondria and a large amount of heat is produced. There is only about 50g of brown fat in the neck region and it switches on and off throughout the day as it's exposed to different temperatures or if you exercise or eat. But this capacity is much greater in young children compared with adolescents and adults. The challenge is now to use the knowledge to find out what might switch on brown fat. If it is switched on, we can benefit from it. Brown fat produces lots of heat by burning calories. Unlike white fat, brown fat does not expand our ageing waistlines. And that's why the race is on to find out more about brown fat, and how humans could use it to our advantage, though we would waste energy unnecessarily, and we would sweat a lot and forever be opening windows. Which is the unique factor of brown fat producing heat? | [
"Fatty acids.",
"Triglyceride.",
"UCP1.",
"ATP."
] | null | C | |
mmlu_stem | mmlu_stem_20237 | Which type of cell must perform all life functions? | [
"candida",
"sea turtle",
"dragonfly",
"daisy"
] | null | A | |
mmlu_stem | mmlu_stem_18757 | Some students were investigating the relationship between position, time, and speed. The students marked the initial position of a toy car. The students set the car into motion and marked the position of the car each second. Which of these are most appropriate for recording and analyzing the students' data? | [
"a table and a bar graph",
"a table and a line graph",
"a pie chart and a bar graph",
"a pie chart and a line graph"
] | null | B | |
mmlu_stem | mmlu_stem_6542 | A Battery's Nightmare Portable electronics that can be carried about easily are only as good as their batteries and, let's face it, batteries aren't very good, especially when compared with, say, petrol, which packs 100 times a battery's energy into an equal space. That's why a large group of mechanical engineers (centered at the Massachusetts Institute of Technology, but with partners at other universities and companies) are hard at work in an effort to replace batteries with a tiny engine that runs on fuel. Imagine a battery-free life! When the fuel runs out in your mobile phone, you just fill up and go. The engine---about the size of a ten-cent coin---starts with a combustion chamber that burns hydrogen. Its tiny parts are etched onto silicon wafers in the same manner that computer parts are etched onto integrated circuits . The first engine is made up of five wafers. And since these wafers could be produced in much the same way as computer chips, they could probably be produced quite cheaply. But the _ in all this nice detail is efficiency. Tiny engine parts don't always behave like the bigger parts of the first engine. Something between the parts can slow down the works, according to Columbia University Professor LucFrechette, one of the engine's designers. Extreme heat from the combustion chamber is also a problem, often leaking to other parts of the engine. The scientists' goal is to create an engine that will operate 10 times better than batteries operate. Frechette says that a complete system, with all parts in place and working, will be set up in the next couple of years, but commercial models aren't likely until at least the end of the next ten years. According to the passage, the title suggests that _ . | [
"batteries should be greatly improved",
"petrol will be used instead of batteries",
"the time of batteries will be gone forever",
"pollution problems caused by batteries must be solved"
] | null | C | |
mmlu_stem | mmlu_stem_18273 | In 1976, the Viking I Lander was sent to Mars to analyze atmospheric gases and soil samples. The Viking I Lander was most likely a | [
"space probe.",
"space shuttle.",
"lunar module.",
"natural satellite."
] | null | A | |
mmlu_stem | mmlu_stem_12000 | The world's biggest Internet search engine, Google, has proven once again to be King of the Web. Users can download "Google Wi-Fi" software and then enjoy free Wi-Fi service available in some US cities since last Tuesday. Wi-Fi is short for "Wireless Fidelity" . It allows laptop computers and personal digital assistants to the Internet at high speed by radio signal. A person with a Wi-Fi enabled computer can connect to the Internet when near one of the network's access points. The place covered by one or several access points is called a hotspot. Google has already set up two "hotspots" in the US city of San Francisco which provide a free Wi-Fi service. The Wi-Fi technology even allows users to enjoy a free Internet phone service. Some scientists argue that Wi-Fi may replace mobile phone networks. Wi-Fi is still limited to a few cities, where there are "hotspots". But its capability of sending information has already done better than that of the mobile phone network, even that of 3G(Third Generation Telecommunication Technology). Some scientists have started to call Wi-Fi 4G. In addition to a high speed Internet connection, Wi-Fi has other advantages compared to mobile phones. Wi-Fi is global. The same Wi-Fi system works in different countries around the world. Different from using cell phones, you don't need to change computers to use Internet phones when you go to other places and most importantly, many Internet phones cost you nothing at all. Which of the following is the best title? | [
"Google Launches Free Wi-Fi Service",
"Free Call Service",
"Third Generation Telecommunication Technology",
"Google, King of the Web"
] | null | A | |
mmlu_stem | mmlu_stem_14748 | Hello! I'm Alex. I often get up at 6:30 am. Half an hour later , I have my breakfast. At 7:30 am, I take a bus to school. We have Math, Chinese and English classes from 8:00 am to 11: 30 am. I have lunch and talk with my classmates at school. We have three classes from 1:40 to 4:10 in the afternoon. After school, I often play with my classmates. We often play soccer, tennis and ping-pong. I go home at about 5:00 pm. I usually have dinner at 6:00 pm. Then I do my homework and watch TV. At about 10:30 pm, I go to bed. Alex usually _ before he goes to bed. | [
"plays computer games",
"takes a shower",
"play soccer",
"watch TV"
] | null | D | |
mmlu_stem | mmlu_stem_4659 | I had been to several doctors as a child, but I have a special place in my heart for Dr. Vincent. He was a Pediatric Cardiologist at UCLA back in 1971 who saved my life. I was eight years old at the time with a severe heart problem and I needed heart surgery. My Mom did not have the money, and without the surgery there was a real good chance I would not live to be thirteen years old. After contacting several organizations Dr. Vincent was able to get financial help for me through United Way, a Crippled Children's Organization. Dr. Vincent was a handsome man; he was also very gentle and caring. I remember being in the hospital for an Angiogram test, and during the procedure I was crying terribly, so the medical staff called in Dr. Vincent to calm me down, and he was able to comfort me when no one else could. Then the time came for me to have heart surgery; there was a fifty- percent chance that I would not make it through the surgery because it was experimental. At the time I was only the second or third person to have this procedure done. I was absolutely terrified, and again Dr. Vincent reassured me he would see to it that everything would be all right. I had a lot of confidence and trust in Dr. Vincent; He came to see me after the surgery, which was extremely painful but very successful, and brought me a stuffed animal. I was so surprised to get this gift from Dr. Vincent; I gave him a hug. I guess Dr. Vincent must have known I was feeling very lonely and scared. You see, I had no family or friends visit me while I was in the hospital except for my Mom, and I am not sure why. I do know one thing; I had a wonderful doctor who took the time to help a scared little girl who felt all alone. This was twenty eight years ago, so wherever you are Dr. Vincent, I want to thank you for not only saving my life, but you helped me live a normal productive life, and for showing me that you truly cared, for that I will be eternally grateful to you. How did Dr. Vincent get the money for the operation? | [
"He collected it in the hospital.",
"He saved the money day by day",
"He got help from an organization.",
"He borrowed the money from his friends"
] | null | C | |
mmlu_stem | mmlu_stem_11200 | Recently I went to the Tsavo National Park in northern Kenya for a film. We set off early for a distant water hole. A huge elephant,covered with dry mud,drank calmly and deeply. He might have traveled 50 km to reach the water. He wasn-t going to hurry now. He-d drink a while and then rest in the shade, and then drink again-or so we thought. What actually happened was that he drank deeply and stepped away. Then he suddenly fell down. Within minutes he was dead. We called animal doctor Jeremiah Poghon immediately. He removed the head of a poisoned arrow from the eLephant s body,and let out over 100 litters of pus -the result of the elephants meeting with a poacher months before. Today's poacher shoots from a blind. He fires an arrow,covered with poison,into the body of an elephant. If the poacher is lucky,the elephant might die in an hour or two; if not,he might have to follow the elephant for days before it dies. Often the arrow head fails to kill the elephant at once-it doesn't mean the poison won't finally kill the elephant,but it will be a slow death. Living in Tsavo through these times,l could see the results of poaching from time to time. When I think about the death of that elephant,what stays with me is the extraordinary silence after the shocking sound of his body hitting the ground. I took some comfort from the knowledge that as the dead body returned to the soil,some animals would benefit-but I couldn't escape the feeling that with the death of such a large animal,the world seemed a poorer and emptier place. Why did the author write the text? | [
"To introduce African elephant.",
"To show the cruelty of poaching.",
"To describe his filming experience.",
"To ask readers to protect wild animals."
] | null | B | |
mmlu_stem | mmlu_stem_1759 | Once upon a time there were a zebra and a monkey in a zoo. The zebra and the monkey had many napkins. What did the zebra and the monkey do with all the napkins? They didn't know. They ate the napkins. The zebra felt good. The monkey got a stomach ache. Why did the monkey get a stomach ache? The napkins were make out of straw. Straw is good for zebras. Straw is not good for monkeys. The monkey did not like eating the napkins. The zoo worker came and gave the monkey a pill. The pill made the monkey feel better. Now the monkey does not eat napkins. The monkey eats bananas instead of napkins. Now the monkey is always happy and feels good. The zebra does not like to eat bananas. The zebra eats all the napkins and feels good. The zebra and the monkey are both very happy. What made the monkey feel better? | [
"the zoo worker gave the monkey a pill",
"the zebra gave the monkey another napkin",
"the zoo worker gave the monkey a banana",
"the zoo worker told the monkey a joke"
] | null | A | |
mmlu_stem | mmlu_stem_13243 | Tom with his grandparents lives in a farmhouse. He studies in a small school. It is not far from his home. So he walks to school every day. There is a small river in front of the school. There is a small bridge over the river. There is only one shop near his school. There is a big playground behind the teaching building. There are some tall trees near the classroom building and the students often read and play under the tree after school. People there are all very friendly. How many shops are there near Tom's school ? | [
"One",
"Two",
"Three",
"Four"
] | null | A | |
mmlu_stem | mmlu_stem_17901 | When specific hormones are present in the blood of a hen, an egg is released from an ovary. Which two systems are involved with the release of an egg? | [
"immune and digestive systems",
"digestive and endocrine systems",
"reproductive and immune systems",
"endocrine and reproductive systems"
] | null | D | |
mmlu_stem | mmlu_stem_2273 | From Earth, we see the sun in the day sky and other stars in the night sky. Nighttime stars look like tiny points of light. Which statement explains why nighttime stars appear so much smaller than the sun? | [
"The stars are much smaller.",
"The sky is much darker at night.",
"The stars are much farther away.",
"The moon blocks out most starlight."
] | null | C | |
mmlu_stem | mmlu_stem_9694 | At the middle school level, there are many academic clubs in which students can participate.Students can choose clubs that focus on an area of interest. Mathcounts Club Mathcounts tries to increase excitement towards mathematic achievement. It hopes to provide students with the foundation for success in science, technology; engineering and mathematics careers. Schools select individuals and teams to participate in competitions. Local competitions are held in February with winners progressing to state competitions and then on to the national level. Mathcounts works to challenge student math skills, develop self-confidence and give rewards for their achievements. Envirothon. The Envrothon program focuses on natural resources knowledge and exposes students to diverse environmental issues, and ecosystems .The ecology field competition for five-member middle school teams offers competitions in wildlife, soils, forestry, current environmental issues and aquatics. Students Work and learn in middle school clubs and can compete at the local and state level. Future Problem Solvers Future Problem Salvers is an academic club that uses a six-step process to solve problemsthat may happen in the future. Students who are in the talented and gifted program, who like to "think out of the box," or who enjoy thinking about futuristic problems max like this club. Teams,comprised of four students read future scenes and write up solutions in: a booklet using the six-step process. Teams that score high enough can go to the .state competition and,then to the international competition. Builders Club Builders Club is open to any middle school student who wishes to perform community service. Each Builders Club is co-sponsored by a Kiwanis club. and the middle school. The members learn by doing, and they learn organization; teamwork,and leadership. Builders Clubs can sponsor a "Teacher of the year" program, provide a recycling collection point, organize canned food and clothing drives to support local shelters, adopt a resident at a local senior citizens home; adopt a highway; tutor, etc. Middle school academic clubs offer students a place to explore interests or talents: The clubs they join in middle school can help guide choices in high school and beyond. The students who are not interested in competitions would like to choose _ . | [
"Mutheounts Club",
"Builders Club",
"Future Problem Solvers",
"Envirothon"
] | null | B | |
mmlu_stem | mmlu_stem_12010 | Looking back on my childhood. I am convinced that naturalists are born and not made. Although we were brought up in the same way, my brothers and sisters soon abandoned their pressed flowers and insects. Unlike them, I had no ear for music and languages. I was not an early reader and I could not do mental arithmetic. Before Word War I we spent our summer holidays in Hungary. I have only the dim memory of the house we lived in, of my room and my toys. Nor do I recall clearly the large family of grandparents, aunts, uncles and cousins who gathered next door. But I do have a crystal clear memory of dogs, the farm animals, the local birds and above all, the insects. I am a naturalist, not a scientist. I have a strong love of the natural world, and my enthusiasm has led me into varied investigations. I love discussing my favorite topics and enjoy burning the midnight oil reading about other people's observations and discoveries. Then something happens that brings these observations together in my conscious mind. Suddenly you fancy you see the answer to the riddle. Because it all seems to fit together .This has resulted in my publishing 300 papers and books. Which some may light honor, with the title of scientific research. But curiosity a keen eye, a good memory and enjoyment of the animal and plant world do not make a scientist? One of the outstanding and essential qualities required is self-discipline, a quality I lack. A scientist can be made a naturalist. If you can combine the two, you get the best of both worlds. According to the author, a born naturalist should first of all be _ | [
"full of ambition",
"self-disciplined",
"full of enthusiasm",
"knowledgeable"
] | null | C | |
mmlu_stem | mmlu_stem_14113 | At 9 a.m. on October 15, 2003, our country launched its first manned space-ship, Shenzhou V, into space at Jiuquan Satellite Launch Center in Gansu Province. It took Yang Liwei and his spaceship about 21 hours to circle the earth 14 times. Yang Liwei is China's first astronaut. He comes from Liaoning Province, and he has been an air force pilot since 1983. He was chosen from 14 pilots after many difficult tests. The life of an astronaut is hard to imagine for many people. To put on a space suit takes 15 minutes with the help of others. Sleeping in space is not easy, either. He has to sleep in a special sleeping bag on the wall because there is no gravity. Yang can eat chicken and rice. It's especially made to eat in space but it doesn't taste nice. "I'm feeling very good in space, and it looks wonderful here," said Yang, "I have looked at our beautiful earth and I have recorded all that I have seen here." China has become the third country in the world to send a person into space after the former Soviet Union and the United States. China is now planning its next launch. Shenzhou VI will be into space within(......) the next years, it may take three astronauts. We are all proud of our motherland. We can know there are _ countries in the world which can send man into space. | [
"five",
"four",
"three",
"two"
] | null | C | |
mmlu_stem | mmlu_stem_8573 | The best swimmers tend to be tall and thin with long arms, long legs, long feet, and long hands. The size of their hands gives them great "water grasp", and only a very small hand movement keeps them afloat. They also have great strength, endurance, insulation against heat loss while in water below body temperature, thus better energy conservation, low resistance when in the water, and swimming stroke mechanics . Part of the reason why some people are better swimmers than others has to do with body density. The average person's body density is slightly less than that of water. Muscle has greater density than fat. Therefore, very muscular people tend to be poor at staying afloat. Bone has greater density than fat. Therefore, very skinny people tend to be poor at staying afloat. Good buoyancy is not necessarily the most important factor in good swimming, but it certainly helps. For example, great competitive swimmers--tall, thin, and usually more muscular than average--tend to have greater body density than average and less buoyancy. Many would not float very well if they remained motionless in the water. Their much greater "water grasp" makes up for it. www.ks5u.com The average woman contains a higher proportion of fat in her body than the average man, and the average man contains a higher proportion of muscle in his body than the average woman. Therefore, in general, women are better floaters than men. Compared with other competitive sports, the performance of women is closer to that of men in competitive swimming. Which of the following can serve as the best title of the passage? | [
"How to be a good swimmer",
"Details about swimming",
"Facts about swimming",
"Better ways, better swimmers"
] | null | C | |
mmlu_stem | mmlu_stem_12219 | We live on the Earth. It's our home. But how much do you know about it? The Earth is like a huge ball. Like the other seven planets, the Earth is running around the Sun. It's the third nearest planet to the Sun. It takes the Earth about 365 days to run around the Sun. At the same time, the Earth is going around itself. If you are in space, you can see lots of white clouds over the surface of the Earth. Through the clouds, you can see the blue color of the oceans and the brown color of the land. About 70% of the Earth is covered with water. Why do we have day and night? When the half of the Earth is facing the Sun, it's daytime. As the Earth turns and this half is away from the Sun, night is coming. And it's daytime for the other half. How many planets are running around the Sun? | [
"Seven.",
"Eight.",
"Nine.",
"Ten."
] | null | B | |
mmlu_stem | mmlu_stem_12025 | NOTICE DO NOT FISH FOR FOOD, FISHERMAN! FOR YOUR OWN HEALTH FISH FROM THESE WATERS SHOULD NOT BE EATEN BECAUSE OF MERCURY POLLUTION Office of Land and Forests The notice is given because _ . | [
"the land and forest are polluted by mercury",
"it is right to catch fish from these waters",
"people may be ill by eating the fish they catch",
"these waters are full of dirty things"
] | null | C | |
mmlu_stem | mmlu_stem_19813 | If a bird is green, another bird can realize that by | [
"noticing it",
"visiting it",
"touching it",
"killing it"
] | null | A | |
mmlu_stem | mmlu_stem_1166 | Jennifer and Mark prepared a layer cake using oil and water. After the cake baked in the oven, they added frosting. Which property could be measured with a balance? | [
"the temperature of the oven",
"the mass of the frosting",
"the height of the layers",
"the volume of the oil"
] | null | B | |
mmlu_stem | mmlu_stem_20413 | Toasting already-baked bread requires using | [
"unprocessed gluten mix",
"a thermal conductor",
"a snowboard",
"an energetic stream"
] | null | B | |
mmlu_stem | mmlu_stem_21905 | Bringing a stray cat to your home to live will be hard for it at first, but since animals adapt, it will | [
"fly away",
"go to space",
"get acclimated",
"breathe underwater"
] | null | C | |
mmlu_stem | mmlu_stem_15166 | Mr Smith gave his wife money every Friday evening. His wife always spent it all the next Wednesday, so that for the next three days she had no money to spend at all. One day Mr Smith asked her," But how did you spend all that money?" She answered, "I don't know . "So one Friday evening, Mr Smith gave her money together with an exercise book and a pencil. He said to his wife ,"Please write down how you spend the money . "Next Tuesday, his wife had no money again. Mr Smith took the exercise book to see how she had spent it. "I have done what you told me ,"she said gladly. She had written "Friday, I got 18 pounds from Mr Smith. "on the first page, and on the second page, she wrote ,"Tuesday, I have spent it all. " Mr Smith gave his wife money _ a week. | [
"once",
"twice",
"three times",
"four times"
] | null | A | |
mmlu_stem | mmlu_stem_12005 | Cell phones: is there a cancer link? Could your cell phone give you cancer? Whether it could or not, some people are worrying about the possibility that phones, power lines and Wi-Fi could be responsible for a range of illnesses, from rashes to brain tumors. Some say there is evidence to support the growing anxieties. David Carpenter, a professor of environmental health sciences at the university at Albany, in New York, thinks there's a greater than 95 percent chance that power lines can cause childhood leukemia . Also there's a greater than 90 percent chance that cell phones can cause brain tumors. "It's apparent now that there's a real risk, " said Carpenter. But others believe these concerns are unjustified. Dr Martha Linet, the head of radiation epidemiology at the US National Cancer Institute, has looked at the same research as Carpenter but has reached a different conclusion. "I don't support warning labels for cell phones, " said Linet. "We don't have the evidence that there's much danger. " Studies so far suggest a weak connection between EMFs and illness-- so weak that it might not exist at all. A multinational investigation of cell phones and brain cancer, in 13 countries outside the US, has been underway for several years. It's funded in part by the European Union, in part by a cell phone industry group. The final report should come out later this year, but data so far don't suggest a strong link between cell phone use and cancer risk. Which of the following best describes the attitude of the author towards the debate? | [
"Optimistic.",
"Objective.",
"Opposite.",
"Casual. ]"
] | null | B | |
mmlu_stem | mmlu_stem_888 | A group of students plans to build a model of a local pond habitat. Which model best represents an environment similar to a pond? | [
"a sealed plastic bottle containing insects and algae from a pond",
"a classroom aquarium containing plants and animals bought from a store",
"a classroom aquarium containing freshwater, non-native plants, and non-native animals",
"a small plastic outdoor pool containing freshwater, native plants, and native ... | null | D | |
mmlu_stem | mmlu_stem_19421 | if something moves faster than before, it might have been affected by what? | [
"the application of water",
"the application of force",
"the application of light",
"none of these"
] | null | B | |
mmlu_stem | mmlu_stem_1077 | Some students used a hot plate to heat 1 L of water from 20°C to the boiling point of water. The students recorded the temperature of the water each minute until it began to boil. Which of the following provides the most appropriate way to represent the data? | [
"a bar graph with temperature on the y-axis and time on the x-axis",
"a bar graph with time on the y-axis and temperature on the x-axis",
"a line graph with temperature on the y-axis and time on the x-axis",
"a line graph with time on the y-axis and temperature on the x-axis"
] | null | C | |
mmlu_stem | mmlu_stem_1839 | Alan is using cabbage juice to determine the relative pH of various household solutions. Which of these steps communicates the results of his investigation? | [
"Conduct multiple trials",
"Write down a procedure",
"Identify the materials to be tested",
"Record observations and data in a journal"
] | null | D | |
mmlu_stem | mmlu_stem_368 | Different species of carnivorous animals that share the same habitat in an ecosystem may | [
"become decomposers",
"compete for food",
"produce their own food",
"mate with each other"
] | null | B | |
mmlu_stem | mmlu_stem_17046 | How do you like your school? Have you ever written to your headmaster to express your idea? Here are some letters written by students from different schools. Luke, 14, from Jiangsu I will give some suggestions about our school uniform. In our school, we students have to wear uniform every day. But the yellow and green sports kit looks really dark and old. It can't stand for young and lively spirit. We can add some red or orange colors and make a new type of uniform. I hope our headmaster will think about it. Danny, 14, from Zhejiang I have two suggestions for my headmaster. First of all, I think we should have more hobby classes in science , such as plane model making class and computer programming class. It is really boring to study basic subjects all the time. And second, I hope we can have more PE lessons or more time for physical exercise. Lots of students now don't have a strong enough body. Sam, 15, from Shanxi I'd like to say thank you to my headmaster. About one week ago, I got a bad cold after playing basketball. Our headmaster came to me after he knew about it. He took care of me until my parents came. I really want to thank him for that. Helen, 14, from Shandong In the letter I wrote, I want to talk about the possibility of personal classes. Now many middle schools are trying the "personal class" system. Students don't have regular classes. They can choose lessons they want to take. _ And it is also good for exercise. We don't have to stay in one classroom all the time. According to the passage, most students write to their headmasters about _ . | [
"personal experiences",
"how to make schools better",
"spare time activities",
"how to deal with other students"
] | null | A | |
mmlu_stem | mmlu_stem_19786 | Which traits could be pass along using reproduction and genetic material? | [
"nose",
"thoughts",
"money",
"habits."
] | null | A | |
mmlu_stem | mmlu_stem_1776 | Seedy the watermelon was a very special type of watermelon. He didn't have any seeds. He was green and he had stripes. All of his cousins had seeds, but he didn't have any. He felt very left out. He couldn't thing of why he was different. His mom told him it was because he was a very special watermelon. She also tells him she loves him the way he is. But Seedy didn't think it was a good thing. He wished he could be like everyone else and have seeds. One day, he rolled out to the lawn and looked at all of his new cousins growing in the garden. He rolled around until he found a little baby watermelon that didn't have any seeds either. He sat next to him and talked to him. He told him that he was very special, and was excited for him to be picked off the vine and be his special best friend. He would name him Seedy, Jr. What is the main watermelon's name? | [
"Watermelon",
"Seedy",
"Seed",
"Green"
] | null | B | |
mmlu_stem | mmlu_stem_1328 | The mountain chorus frog is an endangered species in Maryland. In addition to the loss of habitat, what most likely caused this frog population to decline? | [
"an increase in a food source",
"more frog breeding grounds",
"native wetlands preservation",
"poisons dissolved in the water"
] | null | D | |
mmlu_stem | mmlu_stem_17793 | What happens when oil and water are mixed? | [
"The mixture changes color.",
"The water becomes cloudy.",
"The oil dissolves in the water.",
"The oil and water remain separate."
] | null | D | |
mmlu_stem | mmlu_stem_10632 | Experiments aboard the spaceship Columbia have disproved a theory on the human nervous system which won an Austrian professor a Nobel prize 79 years ago. West German astronaut Ulf Merbold disproved the theory during tests aboard the spaceship yesterday. His discovery is connected with the workings of the inner ear, the body's balance mechanism . In l914 Professor Robert Barany won the Nobel prize for Physiology and Medicine when he announced that temperature differences affected the inner ear and caused the eyes to blink . His theory was accepted by scientists. But Merbold carried out tests to find if the theory was correct and shocked himself and space officials when he proved it wrong. According to Barany's theory the eyes would blink when cold air was blown into one ear and hot air blown into the other. But if this theory was correct such a movement would be impossible in zero gravity . Both Merbold's eyes continually blinked when the test was carried out. Tests were carried out in outer space in order to _ . | [
"find what causes the eyes to blink",
"shock the world",
"win the prize",
"prove the theory"
] | null | D | |
mmlu_stem | mmlu_stem_5007 | The possibility that pleasant smells might reduce pain has recently been suggested by new research. In a scientific study, doctors asked 20 men and 20 women to keep their hands in very hot water for as long as possible while breathing in different smells. As people believe that strong smells can affect the senses, volunteers were asked not to eat or drink for eight hours before the experiment began. During the experiment, volunteers were asked to take in pleasant smells such as vanilla , and unpleasant smells such as durians . The volunteers kept their hands in the water until it became too hot for them. When they could not bear the pain any more, they took their hands out of the water. Scientists are interested in whether the senses or smell is related to pain and whether men and women have the same senses. Now, the study has proved that for women, pleasant smells reduce pain. For men, there is no change. Dr Finkelstein has been studying smells since 1999. He says that scientists already have data from 40 volunteers. He adds that this year, scientists will test another 60 volunteers and will be in a better position to explain the results. One explanation is that women's sense of smell developed long ago, and is linked to recognizing the smell of babies. Scientists used to believe that mothers recognized their children by sight only. Now, they have started to believe that the sense of smell also helps, but why pleasant smells do not reduce pain in men is a question still to be answered by scientists. If both men and women are asked to keep their hands in hot water while taking in some pleasant smells, _ . | [
"women may stand the pain of the hot water longer",
"men may keep their hands in the hot water longer",
"they will probably take their hands out at the same time",
"we are not quite sure who will take their hands out earlier"
] | null | A | |
mmlu_stem | mmlu_stem_7371 | Jockeys are the smallest athletes. They are rarely over five feet six, or 120 pounds. The lighter the weight on the horse, the faster it can go. Riding fast horses on the track is tough on the small jockeys. The jockey doesn't"sit"on the horse. He leans forward on his legs. The strain is on his thighs and calf muscles. As jockeys age, their legs"go"first. Jockeys also need arm strength. It's a strain holding a 1000-pound racehorse. On muddy days, jockeys get a pounding of mud. The mud comes flying off the hooves of the horses in front. "It feels like someone is punching you all over,"says one rider. And a jockey can be hurt. A jockey can have a leg jammed between two horses. Or it can get caught between horse and the rail. The worst accidents are from falls. A horse may fall on his rider. Or horses behind may trample if he hits the track. In one year about 240 riders are hurt badly. That's one out of six jockeys. But the jockeys are well-paid. A jockey keeps about ten percent of the money his horses win. Jacinto Vasquez, a five-foot-three comer, has ridden horses to $7,000,000 in wins in the last eight years, which means he does almost $100,000 a year. Why do some jockeys do better than others? "It isn't the way a boy sits on a horse or uses the reins or the whip,"says Conn McCreary. McCreary was a top jockey of the 1950's. He rode two Kentucky Derby winners. "Most jockeys do this the same. It's the 'feel' he has for the horses." "When you come right down to it, it just seems that horses run better for some riders," McCreary says. "A real good jockey doesn't lose with the best horse. And sometimes he'll win with the second or third best." Many Latin-American riders, like Jacinto, seem to have the _ . "Maybe it's because we grew up with horses,"says Jacinto. "Maybe it's because we like to ride. There was a strike at Aqueduct last year. We, Jorge Velasquez, and Angel Cordero (two other top Latin riders) went to a park. We rented horses, and rode around the bridle path !" When a jockey is riding a fast horse, he doesn't _ . | [
"really sit on the horse",
"lean forward on his legs",
"use much arm strength",
"get any mud on wet track"
] | null | A | |
mmlu_stem | mmlu_stem_7896 | A, B, C, D,. Phantom of the OperaThe Phantom of the Opera, by Andrew Lloyd Webber, debuts (appears in public for the first time ) in Shanghai , marking the production's first Asian performance. Since it was first staged in London , the play has been seen by 58million people all over the world.. The Phantom of the Opera, depicts a mysterious person with a beautiful voice living under the Paris Theatre. The Grand stage sets and music have made the musical famous throughout the world. 7:15 pm, December 18 200---2000yuan 7:15pm, December 19,24--26,31 100 -800 yuan Shanghai Grand Theatre,300 Renmin Dadao Tel: 5466-0206 Cello recital Cellist Nina Kotova will stage a recital in Shanghai . Kotova, from Russia, is an excellent musician and composer . She gained world attention when she won first prize in an international music contest at the age of 15. She is also a model and has graced the covers of many fashion magazines. 7:30 pm., December 15 50--500 yuan Shanghai Concert Hall. 523 Yan'an Donglu Tel: 6386-2836 Pipa concert Yang Jing plays the pipa in concert. The pipa player found her distinctive musical character through the ancient pieces of an ancient culture and the most contemporary( )music of the world. Rooted in the millennia -old tradition of Chinese music, she builds on a vast body of musical history from the East and West. 7:15 pm, December 10 40--100 yuan He Luting Concert Hall ,20 Fenyang Lu Tel: 6437-1192 To attend two different concerts listed above will cost at least _ . | [
"80 yuan",
"90 yuan",
"600 yuan",
"1,000 yuan"
] | null | B | |
mmlu_stem | mmlu_stem_10633 | Experiments aboard the spaceship Columbia have disproved a theory on the human nervous system which won an Austrian professor a Nobel prize 79 years ago. West German astronaut Ulf Merbold disproved the theory during tests aboard the spaceship yesterday. His discovery is connected with the workings of the inner ear, the body's balance mechanism . In l914 Professor Robert Barany won the Nobel prize for Physiology and Medicine when he announced that temperature differences affected the inner ear and caused the eyes to blink . His theory was accepted by scientists. But Merbold carried out tests to find if the theory was correct and shocked himself and space officials when he proved it wrong. According to Barany's theory the eyes would blink when cold air was blown into one ear and hot air blown into the other. But if this theory was correct such a movement would be impossible in zero gravity . Both Merbold's eyes continually blinked when the test was carried out. Barany's theory declared to prove _ . | [
"how our hearing mechanism works",
"why we constantly move our eyes",
"that eye movement is affected by temperature",
"how hearing reacts"
] | null | C | |
mmlu_stem | mmlu_stem_2491 | Until I was twelve years old, I thought everyone in the world knew about the grinnies, if I thought about the term at all -- which is unlikely. After all, everyone in my family used the word quite naturally, and we understood each other. So far as I knew, it was a word like any other word -- like bath, orchocolate, orhomework. But it was my homework which led to my discovery thatgrinnieswas a word not known outside my family. My last report card had said that I was a "C" student in English, and my parents, both teachers, decided that no child of theirs would be just an average student of anything. So nightly I spelled words aloud and answered questions about the fine points of grammar. I wrote and rewrote and rewrote every composition until I convinced my mother that I could make no more improvements. And the hard work paid off. One day the teacher returned compositions, and there it was -- a big fat, bright red "A" on the top of my paper. Naturally, I was delighted, but I didn't know I was attracting attention until the teacher spoke sharply, "Helen, what are you doing?" Called suddenly out of my happy thoughts, I said "Oh, I've got the grinnies!" The teacher and my classmates burst into laughter, and then I understood that grinnies were used inside my family. Other people were not so lucky. And it is really lucky to have the grinnies, an uncontrollable, natural state of great pleasure. Grinnies are shown on the outside by sparkling eyes and a wide, wide smile -- not just any smile, but one that shows the teeth and stretches the mouth to its limits. A person experiencing the grinnies appears to be all mouth. On the inside grinnies are characterized by a feeling of joyful anxiety. Grinnies usually last just a few seconds, but they can come and go. Sometimes, when life seems just perfect, I have occasional attacks of the grinnies for a whole day. The term originated in my mother's family. Her younger sister, Rose, who had deep dimples , often expressed her pleasure with such a grin that the dimples appeared to become permanent. When Rose was about four, she started explaining her funny look by saying, "I have the grinnies". The term caught on, and it has been an important word in our family now for two generations. The occasion doesn't matter. Anything can bring on the grinnies -- just so long as one feels great delight. When my brother finally rode his bicycle -- without training wheels -- from our house to the corner and back, he came home with the grinnies. When I was little, my mother's announcement that we would have homemade ice cream for dessert always gave me the grinnies. My father had the grinnies when I was chosen to make a speech at the end-of-school-year ceremony. Grinnies can be brought on by a good meal, a sense of pride, a new friend, a telephone call from someone special, an achievement. Or sometimes one gets the grinnies for no reason at all: just a sudden sense of happiness can bring on a case. Whatever brings them on, an attack of the grinnies is among life's greatest pleasures. In fact, now that I look back on the experience, I feel sorry for my seventh-grade teacher. I think it's a pity that she didn't know the word grinnies. It's such a useful term for saying, "I'm really, really pleased!" According to the writer, the word "grinnies" originates from _ . | [
"her mother",
"her aunt",
"her brother",
"her father"
] | null | B | |
mmlu_stem | mmlu_stem_8619 | Back those photos up The images were striking. Homes on the East Coast were washed away by Superstorm Sandy. People were in tears, picking up faded photographs, among their only remaining possessions. If that doesn't move you to get serious about safekeeping your lifetime of memories, what will? The digital age offers tools never imaginable before--including one-click access to a lifetime of family photos. Here is a brochure on how to back up your photos and save them online, where they can live forever and be accessible in good times and bad. Scanning The first step for those old photos is to scan them and save them to a digital format. Most printers come with scanners these days, so that's an easy but extremely time-consuming step. Storing the photos With your scans in place, import the photos into your computer, and back them up. You could make multiple copies of the disks and spread them to loved ones. Or you could choose external hard drives or USB thumb drive, and add your photo and video collection from your computer. Online backup If you need lots of space, look at a pure online backup service, Caronite. Caronite backs up 300 million files daily. Once you sign up, it starts to pick up everything you have on your hard drive. But photo collection on your computer's main hard drive charges for $59 a year. Cloud Storage For folks who don't need automatic backup, but instead want to take a more active approach, Dropbox, Google Drive and Microsoft's SkyDrive let you store files online by yourself, share and instantly access them. All offer free options--2GB of free storage for Dropbox, 5GB for Google and 7GB for SkyDrive. But if you want more, you need to pay. Bottom Line The hard drive or flash drive is the cheapest and easiest. But drives can fail. Online services are more expensive, but more secure. With more of us switching back and forth between our computers, such services are the best way to get access to our data from wherever we are. What can we know from the passage? | [
"Scanning photos takes little time but costs a lot.",
"Caronite charges for backing up photos from hard drive.",
"Google Drive offers unlimited free photo storage on line.",
"The hard drive or flash drive is the cheapest and safest."
] | null | B | |
mmlu_stem | mmlu_stem_17974 | The process by which water vapor in the atmosphere cools and becomes a liquid is called | [
"evaporation.",
"perspiration.",
"condensation.",
"transportation."
] | null | C | |
mmlu_stem | mmlu_stem_11122 | Easter is still a great day for worship, randy in baskets and running around the yard finding eggs, but every year it gets quite a bit worse for bunnies. And no, not because the kids like to pull their ears. The _ is climate change, and some researchers found that rising temperatures arc having harmful effects on at least five species of rabbit in the US. Take the Lower Keys March rabbit, for instance. An endangered species that lives in the Lower Florida Keys, this species of cottontail is a great swimmer -- it lives on the islands! -- but it is already severely affected by development and now by rising levels. According to the Center for Biological Diversity, an ocean level rise of only 0. 6 meters will send these guys jumping to higher ground and a 0.9-meter rise would wipe out their habitat completely. The snowshoe hare, on the other hand, has a color issue. Most of these rabbits change their fur color from white in the wintertime to brown in the summer, each designed to give them better cover from predators . As the number of days with snow decreases all across the country, however, more and more bunnies arc being left in white fur during brown dirt days of both fall and spring, making them an easier mark for predators. Researchers know that the color change is controlled by the number of hours of sunlight, but whether the rabbit will be able to adapt quick enough to survive is a big question. The National Wildlife Federation has reported that hunters have noticed their numbers are already markedly down. American pikas or rock rabbits, a relative of rabbits and hares, might be the firs' of these species to go extinct due to climate change. About 7-8 inches long, pikas live high in the cool, damp mountains west of the Rocky Mountains. As global temperatures rise, they would naturally migrate to higher ground -- but they already occupy the mountaintops. They can't go any higher. The National Wildlife Federation reports that they might not be able to stand the new temperatures as their habitat beats up. The volcano rabbit has the same problem. These rabbits live on the slopes of volcanoes in Mexico, and recent studies have shown that the lower range of their habitat has already shifted upward about 700 meters, but there are not suitable plants for them to move higher, so they are stuck in the middle. Scientists are concerned about their populations. Native to the US, pygmy rabbits weigh less than 1 pound and live in the American West. They are believed to be the smallest rabbits in the world. Their habitats have been destroyed by development. Several populations, such as the Columbia Basin pygmy, almost went extinct and were saved by zoo breeding programs. Pygmy rabbits also rely on winter cover by digging tunnels through the snow to escape predators, but lesser snowfall is leaving them exposed. All of this gives new meaning to dressing up in a giant bunny costume this Easter. The problem faced by volcano rabbets and rock rabbits is that _ . | [
"both are affected by 1ess snow",
"both are affected by rising sea levels",
"neither can find enough food",
"neither can migrate to higher places"
] | null | D | |
mmlu_stem | mmlu_stem_13316 | Hello, I'm a middle school student from Hainan. My Chinese name is Li Ying. My English name is Alice. I am Chinese. I'm in No. 26 Middle School. I am a good student. Now I am thirteen years old. Our school is very nice. Ms Smart is my English teacher. I like her and she loves us very much. There are three people in my family. This is my father. He is a teacher. This is my mother. Her name is Han Jing. I love them very much. Li Ying's father is _ . | [
"a teacher",
"a doctor",
"a student",
"a worker"
] | null | A | |
mmlu_stem | mmlu_stem_11805 | Edmund Halley was an English scientist who lived over 200 years ago. He studied the observations of comets which other scientists had made. The orbit of one particular comet was a very difficult mathematical problem. He could not figure it out. Neither could other scientists who dealt with such problems. However, Halley had a friend named Isaac Newton, who was a brilliant mathematician. Newton thought he had already worked out that problem, but he could not find the papers on which he had done it. He told Halley that the orbit of a comet had the shape of an ellipse . Now Halley set to work. He figured out(,)the orbits of some of the comets that had been observed by scientists. He made a surprising discovery. The comets that had appeared in the years 1531, 1607, and 1682 all had the same orbit. Yet their appearance had been 75 to 76 years apart. This seemed very strange to Halley. Three different comets followed the same orbit. The more Halley thought about it, the more he thought that there had not been three different comets as people thought. He decided that they had simply seen the same comet three times. The comet had gone away and had come back again. It was an astonishing idea! Halley felt certain to make a prediction of what would happen in the future. He decided that this would appear in the year 1758. There were 53 years to go before Halley's prediction could be tested. In 1758 the comet appeared in the sky. Halley did not see it, for he had died some years before. Ever since then that comet had been called Halley's comet, in his honor. This passage in general is about _ . | [
"Halley and other scientists",
"the orbit of a comet",
"Newton and Halley",
"Halley and his discovery"
] | null | D | |
mmlu_stem | mmlu_stem_5604 | Since 1936, many female space explorers have followed Russian astronaut Valentina Tereshkova. Let's look at the missions of four important female astronauts to find out what astronauts do in space. In 1983, Sally Ride became the first American women in space. Her team carried out scientific experiments in space and put two communications satellites in space. Satellites make it possible for us to communicate instantly with each other across the world through TV, radio, and telephones. In 1984, Kathryn Sullivan became the first American women to walk in space. During her mission, she discovered important information about the sun's energy and how it affects the climate in very hot and very cold places on Earth. She also took photographs of Earth and measured air pollution. In 1992, Mae Jemison became the first African-American in space. During her mission, she did scientific experiments using the weightless atmosphere. In space, there is no gravity, so everything floats! Dr. Jemison's experiments gave important information about the human body to produce better medicines and healthcare. In 2012, Liu Yang became the first Chinese women in space. She did experiments in space medicine, which look at how astronauts can survive and stay healthy in space. The conditions in space are very hard on the body and space medicine helps astronauts work safely. Which of the following can be the best title for the passage? | [
"Great Walking in Space",
"Conditions in Space",
"Healthcare in Space",
"Women in Space"
] | null | D | |
mmlu_stem | mmlu_stem_4144 | The end of the 2014 World Cup does not mean the end of the international competition in Brazil. A major football event which is known as RoboCup will be held in the coastal city Joao Pessoa. Teams of robots from around the world will take part in _ and play the game known as soccer in the United States. The robot teams are guided by teams of human beings. Watching robots play football is similar to watching children play the game. The kicks are not good, there are a lot of falls , and people are there to guide and support the robot players. Students of the University of Pennsylvania are trying for their fourth victory at the competition. The students have won the last three RoboCup competition in the Netherlands, Mexico and Turkey. Jian Qiaoli is one of the leaders of the University of Pennsylvania team. He says one goal he has set for his team is to make sure the robots can find the ball and know where they are on the playing field. And he wants the team to be able to better control the walking ability of the robots. They should pay more attention to the kicking ability, which is the key to winning the game. Qin He is another leader of the robot team. She says the abilities of the robots improve every year. The robots know the difference between the colors green and red, and they can decide where to go and where the ball is on the playing field. She says the robots are self-learning and don't need to be told what to do. If there are three robot players on the playing field at the same time, they will communicate with each other to decide different responsibility for each of them. They have very good team play right now. As long as the radar detection works well, the robots will be very competitive. So RoboCup will be an exciting technology competition. Each team develops their own software. Actually, it's a competition of who has the best software. Some RoboCup participants hope to develop a team of robots that can play against human beings. What is the deciding factor for the robots to win the game? | [
"The ability to find the ball.",
"The ability to know the position.",
"The ability of walking.",
"The ability of kicking."
] | null | D | |
mmlu_stem | mmlu_stem_9892 | Poor Oral Health Leads to Social and Emotional Problems A new report says nearly four-billion people have major tooth decay, or cavities. That number represents more than half of the world's population. Health officials are warning that failure to repair cavities can lead to social and emotional problems. Wagner Marcenes is with the Institute of Dentistry at Queen Mary, University of London. He led a team of researchers as part of the Global Burden of Disease 2010 study. About 500 researchers attempt to collect and examine studies about all major diseases. They used the information to estimate rates of the infection. The report says untreated tooth decay is the most common of all 291 major diseases and injuries. Professor Marcenes says cavities or holes in permanent teeth are also known as caries. "Caries is a chronic disease that shares the same risk factors as cancer, cardiovascular disease. What we're having now is an increase in disease from highly developed countries happening in sub-Saharan Africa and probably it will be in other areas of Africa, too." He says an increase in tooth decay in Africa could be a result of developing countries becoming more like Western nations. "It is likely to be related to a change in diet. Our industrialized diet leads to chronic disease, which includes caries. And that may be the main explanation." Western diets are rich in sugar, a leading cause of health problems in the mouth. Wagner Marcenes says oral health problems can have a major effect on a person's quality of life. First, cavities make eating difficult. Second, people may change what they eat. They may eat softer foods that are not hard to chew. However, softer foods are often fattier foods. But professor Marcenes says the biggest issue in tooth decay is both social and mental. He says the researchers found strong evidence that the mouth has a big influence on socialization. He says many people want to hide bad teeth. They smile less and communicate less. Wagner Marcenes is calling for an "urgent, organized, social response" to the widespread lack of oral health. He believes in a natural method to fight tooth decay by having a healthier diet. He is also calling for the development of new and less costly dental materials and treatments. The writer wrote this passage in order to _ . | [
"arouse people's concern about caries and take measures to deal with it.",
"tell the result of the Global Burden of Disease 2010 study.",
"warn people in Africa to adjust their diet to prevent caries.",
"tell doctors that caries affects a person's quality of life."
] | null | A | |
mmlu_stem | mmlu_stem_21029 | A faucet drips | [
"lava",
"air",
"sand",
"melted ice"
] | null | D | |
mmlu_stem | mmlu_stem_10915 | Less TV Reduce Kids Weight PALO AITO, California--"Switching off the television may help prevent children from getting fatter--even if they do not change their diet or increase the amount they exercise," US researchers said last week. A study of 192 third and fourth grades, generally aged eight and nine, found that children who cut the number of hours spent watching television gained nearly two pounds (0.91 kg) less over a one-year period than those who did not change their television diet. "The findings are important because they show that weight loss can only be the result of a reduction in television viewing and not any other activity," said Thomas Robinson, a pediatrician at Stanford University. " American children spend an average of more than four hours per day watching television and videos or playing games, and rates of childhood being very fat have doubled over the past 20 years," Robinson said. In the study, presented this week to the Pediatric Academic Societies' annual meeting in San Francisco, the researchers persuaded about 100 of the students to reduce their television viewing by one-quarter to one-third. Children watching fewer hours of television showed a significantly smaller increase in waist size and had less body fat than other students who continue their normal television viewing, even though neither group ate a special diet nor took part in any extra exercise. "One explanation for the weight loss could be the children unstuck to the television may simply have been moving around and burning off calories," Robinson said. "Another reason might be due to eating fewer meals in front of the television. Some studies have suggested that eating in front of the TV encourages people to eat more," Robinson added. Which of the following is right ? | [
"Children usually eat fewer while watching TV.",
"Children usually eat more while watching TV.",
"Children eat the same amount of meals while watching TV.",
"Children usually eat nothing while watching TV."
] | null | B | |
mmlu_stem | mmlu_stem_6220 | Women who own cats are more likely to have mental health problems and kill themselves because they can be infected by a common parasite that can be caught from cat litter, a study has found. Researchers found women infected with the Toxoplasma gondii (T. gondii) parasite , which is spread through contact with cat waste or eating undercooked meat or unwashed vegetables, are at increased risk of attempting suicide. The study involved more than 45,000 women in Denmark. About a third of the world's population is infected with the parasite, which hides in cells in the brain and muscles, often without producing symptoms. The infection, which is called toxoplasmosis , has been linked to mental illness, such as schizophrenia , and changes in behavior. The study's senior author Doctor Teodor Postolache, an associate professor of psychiatry at the University of Maryland School of Medicine in the United States, said, "We can't say with certainty that T. gondii caused the women to try to kill themselves, but we did find a predictive association between the infection and suicide attempts later in life that deserves additional studies." Doctor Albert Reece, vice president of medical affairs at the University of Maryland, said, "T. gondii infection is a major public health problem around the world, and many people don't realize they're infected. "Dr Postolache is a leading expert on suicide neuroimmunology . Suicide is a critically important mental health issue. About one million people commit suicide and another 10 million attempt suicide worldwide each year. We hope that this type of research will one day help us find ways to save many lives that now end too early in suicide." Dr. Postolache's research team at the University of Maryland was the first to report a connection between T. gondii and suicidal behavior in 2009. He is cooperating with researchers in Denmark, Germany and Sweden to confirm and investigate the way leading to this association. The T. gondii parasite thrives in the intestines of cats, and it is spread through their waste. All warm-blooded animals can become infected through contact with it. Humans can become infected by changing their infected cats' litter boxes, eating unwashed vegetables, drinking water from a polluted source, or by eating undercooked or raw meat. Not washing kitchen knives after preparing raw meat before handling another food item also can lead to infection. Pregnant women can pass the parasite directly to their unborn babies and are advised not to change cat litter boxes to avoid possible infection. Babies don't produce antibodies to T. gondii for three months after they are born, so the antibodies present in their blood represented infection in the mothers. The scientists studied Danish health patients to determine if any of these women later attempted suicide, including cases of violent suicide attempts which may have involved guns, sharp instruments and jumping from high places. The study found that women infected with T. gondii were one and a half times more likely to attempt suicide compared to those who were not infected, and the risk seemed to rise with increasing levels of the T. gondii antibodies. Dr Postolache noted limitations to the study, such as the inability to determine the cause of the suicidal behavior. The findings were published online in the Archives of General Psychiatry. What is the consequence if a woman is infected with the parasite in the passage? | [
"Having a high fever.",
"Doing deliberate self-harm.",
"Keeping a depressed mood.",
"Becoming bad tempered. 53."
] | null | B | |
mmlu_stem | mmlu_stem_8463 | The forest in Senegal, a country in western Africa, is full of the chimps' usual noises. Suddenly dogs bark. Larger male chimps drop from the trees to face the threat while the others climb to safety. Then the dogs' young human masters appear. One mother chimp with a tiny baby tries to run. The dogs attack and separate them. The two teenage boys quickly catch the baby chimp. But they don't act out of sympathy --- they save the baby so they can sell it. After the teenagers return to their hometown, they visit a man who is said to be very interested in chimps. When they ask the man, Johnny Kante, if he wants to buy the baby, he replies, "That's not what we do." Kante is a member of a scientific team. Although Kante is angry with the teens for capturing the chimp, he hides his anger and persuades them to take him to the baby chimp. Unsure of what to do next upon seeing the chimp, Kante calls Jill Pruetz, the head of the chimp research team. "I'm really worried," says Pruetz, doubtful that the mother is still alive. But knowing that wild chimps sometimes adopt orphans , Kante and pruetz decide they must try to return the baby chimp to its wild community. Kante pays another visit to the teenagers. After he explains how much trouble they are in, because chimps are an endangered species, he requests they should give him the frightened baby without payment. They agree. Kante takes the baby chimp to his home and feeds her milk from a bottle whenever she cries. The next morning, Pruetz and Kante leave the baby with another team member and begin their search for the wild chimps. Pruetz quickly finds the group in the woods. She recognizes the female that is without her child. Pruetz is so excited that she runs the entire mile back to bring the baby chimp to the tree where the chimps are hanging out. The researchers place the baby on the ground near the tree and back away. Almost immediately, a male chimp drops to the ground and stares at the baby curiously. He carries her back to where the mother is waiting. Pruetz still can't believe how fortunate they were to have reunited the mother and child. "Surprising is the only word I can think of," she says. It can be learned from the passage that _ . | [
"Kante feeds the baby chimp carefully in the lab",
"larger male chimps protect other chimps when there are dangers",
"the teenagers get some money after setting the baby chimp free",
"Pruetz and Kante take the baby chimp with them to search for the wild chimps."
] | null | B | |
mmlu_stem | mmlu_stem_14726 | Mr. and Mrs. Harris had always spent their summer holidays in a small hotel at the seaside near their hometown. One year, however, Mr. Harris made a lot of money in his factory, so they decided to go to a foreign country and stay at a really good hotel. They flew to Paris, and arrived at a 5-star hotel late in the evening. They thought they would have to go to bed hungry, because in that small hotel where they used to stay in the past, no meals were served after seven in the evening. They were surprised to be told that the hotel served dinner until ten. "Then what are the times of meals?" asked Mrs. Harris. "Well, Madam, we serve breakfast from seven to eleven, lunch from twelve to three, tea from four to five, and dinner from six to ten." "But that hardly leaves any time for us to see the city!" said Mrs. Harris. How long did the service time for lunch last in the hotel? | [
"2 hours.",
"4 hours.",
"3 hours .",
"1 hour."
] | null | C | |
mmlu_stem | mmlu_stem_15035 | Emily and Alex were happy when their family moved to a house with a very big garden. They could climb up trees, grow flowers and even play badminton. They liked to watch the birds flying among the trees in the garden. They even started to put food out to attract more birds. Everything was fine for a few days until one afternoon there was a strange bumping noise on a window. Emily went outside and found a small bird dead on the grass. Its neck seemed to be broken. "It must have flown into the window," Alex said when his sister Emily called him to have a look. "Ah, yes, look here. You can see the mark where it hit the window. There are a couple of tiny feathers stuck on the window." "Poor thing!" Emily said. During the next month, five more birds died in the same way. "Why would they fly to the windows?" they wondered. Finally they found out the truth. When the birds were flying, they couldn't see into the rooms. All they saw was the reflection of the garden. They thought that they were flying into trees because they saw trees reflected by the window. "Something has to be done to save the birds." the parents decided. At first, he family tried keeping curtains across the windows, but this made the room dark. Then they bought some strong black paper and cut out the shape of a _ . They made six hawks - one for each window. They stuck the hawks to the windows. They looked pretty and did not keep out much light. When the birds saw the hawks, they would fly away. After that, there were no more dead birds. The family were much happier. _ birds died in the garden. | [
"4",
"5",
"6",
"7"
] | null | C | |
mmlu_stem | mmlu_stem_8838 | Doctors say anger can be an very harmful emotion unless you learn how to deal with it. They warn that angry feelings can lead to heart disease, stomach problems, headaches, emotional problems and possibly cancer. Anger is a normal emotion that we all feel from time to time. Some people express anger openly in a calm reasonable way. Others burst with anger, losing control of themselves. But other people repress their anger. They cannot or will not express it. For years many doctors thought that repressing anger was more dangerous to a person's health than expressing it. They said that when a person is angry, the brain gives off the same hormones that are produced during tense situations. They speed the heart rate, raise blood pressure, or sugar into the blood and narrow the blood vessels to the interstices . In general, the person feels excited and ready to act. Doctors said that repressing these feelings only makes the feelings continue. And this can lead to many medical problems. Doctors thought a person could prevent these problems by letting the anger out by expressing it freely. But recently some doctors held a different view. They said that people who express anger repeatedly and violently did become, in fact, more and not less angry. They said this,too,can cause medical problems. Some doctors say that both repressing and expressing anger can be dangerous. They believe that those who express anger violently may be more likely to develop heart disease, and they believe that those who keep their anger inside may face a greater danger of high blood pressure. Doctors say the solution is learning how to deal with anger. They say the first step is to admit that you are angry and to recognize the real cause of the anger, and then decide if the cause is serious. If it is, they say: "Do not express your anger while angry. Wait until your anger has cooled down and you are able to express yourself calmly and reasonably. " When you get angry,which of the following should you do for the good of health? | [
"Repressing the anger.",
"Expressing the anger.",
"Learning how to make a deal.",
"Treating the anger properly."
] | null | B | |
mmlu_stem | mmlu_stem_19493 | Which would an alligator eat | [
"spider",
"crab",
"squid",
"tilapia"
] | null | D | |
mmlu_stem | mmlu_stem_12027 | The baby elephant Ishanga was lying in the bushes, scared, starving, and struggling to breathe. Until just a few days before, she had been with her mother, walking through the sweeping grasslands of Tsavo National Park in the African country of Kenya. The baby's mother was killed, most likely by a poacher. On Wednesday, November 17,2010, an anti-poaching team was removing the deadly wire traps that poachers set throughout the park. Luckily, a member of the team spotted the baby and rushed to help her. Suddenly, a lion sprang from the bushes and clamped its mouth around her neck. One person managed to pull out his gun and fire shots in the air. The shocked lion released the baby and backed away. Now the weakened baby had a grave wound on her neck. About 300 miles north of Tsavo is a place that helps baby elephants. Over the years, the orphanage has raised 130 elephants and successfully released them back into the wild. After a tense wait and a plane ride, the baby's rescuers made it to the orphanage. The medical staff worked frantically to treat her wound. She was scared and wild. She screamed, and wouldn't let any humans get near her, refusing to eat or drink. After two hours of intense medical care, Ishanga awoke and slowly struggled to her feet. Two keepers and a veterinarian had been with her all night. They were relieved that she seemed to be recovering. The next day, though Ishanga remained weak, her keepers introduced her to some of the other 14 young elephants living at the orphanage. The keepers stood back as the other elephants extended their trunk in friendly greetings. The older elephants led Ishanga around, giving her a tour of her new home. Over the past year, Ishanga's wounds have healed. She has made many friends. It'll be up to Ishanga to decide when she's ready to leave the orphanage. Returning to the wild is a long process that can take more than 10 years. For now, she is in no rush to leave this extraordinary community of elephants and humans. Ishanga has a long, happy life ahead of her. According to the passage, we can know that _ . | [
"Ishanga is eager to leave the community after recovering",
"the anti-poaching team shot the lion and saved Ishanga",
"it will probably take Ishanga a long time to return to the nature",
"a year later, Ishanga still didn't adapt to living in the orphanage"
] | null | C | |
mmlu_stem | mmlu_stem_16145 | A big, mighty tree stood in a forest. Its branches spread out and its roots went deep in the earth. A lot of people came here to have a rest under it. And a lot of birds stood on its branches to sing and dance. The big tree was very proud all the time. At the foot of the tree, there was a little plant. The plant was thin, and seemed to be blown down by any of a little wind. One day, the two neighbors were having a little chat. "Well, little one," said the tree to the plant, "why not put your feet deeply in the earth, and raise your head high in the air as I do?" "I see there is no need to do so," said the plant with a smile. "In fact, I think I may be safer in this way." "Safer?" said the tree. "Are you safer than I am? Do you know how deep my roots are in the earth and how strong my branches are? Who can possibly pull me out by the roots or bow my head to the ground?" And the tree didn't want to say anything to the weak plant. But the tree was to regret its words very soon. One evening, a great hurricane came. It blew the trees off their roots and almost destroyed the forest completely. It uprooted(......)the mighty tree and blew it away with great force. When the storm had gone, the villagers living nearby came to check the damage. The mighty tree lay on the ground, but the little plant still stood there. Why didn't the big tree want to say anything to the little plant? | [
"Because the big tree was tired.",
"Because the little plant knew less than the big tree.",
"Because the strong wind came.",
"Because the big tree"
] | null | D | |
mmlu_stem | mmlu_stem_6890 | Today, when a fire breaks out, you can be sure a citizen with a cell-phone camera has posted it to Facebook or Twitter, or sent it to the media.But up to now, that citizen has not been able to easily send images and details of what is happening to the people who need it most: police, firefighters and building-security people who must respond, and whose ability to help is often measured in minutes, if not seconds. That's about to change.A one-year old company called Elerts has developed a system that's designed to mobile and social technologies to speed the flow of information between citizens and emergency workers in time of danger.The system involves free mobile applications--iPhone and iPad app is available now--that eyewitnesses can use to report incidents and get public-safety warnings.And Elerts is offering a management console for security firms and universities to receive the reports and distribute warnings and instructions, like a map with the best evacuation route . The service is the brainchild of Chris Russo, deputy fire chief in the coastal town of Hull, Mass.As mobile communications sped up, he grew increasingly frustrated by his inability to communicate effectively with colleagues and the public, particularly with people who are at the scene and might be able to provide help. "Remembering situations when communications failed _ ," Mr.Russo says.Last summer, he was in a search at a beach for a missing boy, who went into a bathhouse but didn't come out.First responders feared an abduction on the beach or shark attack.The child's mother, who didn't speak English well, was so sad that she couldn't remember what color1 shorts he had on.Mr.Russo had no photo of the child, and no ability to turn to beachgoers. Two long hours later, the boy was spotted by a low-flying helicopter lost and alone on the beach crying--a lucky break."If 5 percent of beachgoers had an app to receive a message and send in sightings of a lost boy, the happy ending might have come much sooner," Mr.Russo said. What is the passage mainly about? | [
"An app for reporting emergency.",
"A moving story of Chris Russo.",
"A cell-phone instant service.",
"An app for firm management."
] | null | A | |
mmlu_stem | mmlu_stem_17355 | The sun is a star of average size and brightness. From Earth, the sun appears as a round, yellow object in the daytime sky. At night, we see other stars. They appear as tiny points of light. Why does the sun appear larger than stars that we see at night? | [
"Daylight brightens the sun, making it appear larger.",
"Starlight bends as it passes planets, making the stars appear smaller.",
"The sun is closer to Earth than other stars, making the sun appear larger.",
"Earth's atmosphere filters out light from other stars, making them appear smaller."
] | null | C | |
mmlu_stem | mmlu_stem_20441 | A pot of water is ready to cook noodles when it is boiling, as noted by | [
"salty taste",
"water smell",
"bubble production",
"cool water"
] | null | C | |
mmlu_stem | mmlu_stem_18039 | Why should scientists wear goggles during experiments? | [
"to block out bright sunlight",
"to magnify small objects",
"to protect their eyes",
"to see in the dark"
] | null | C | |
mmlu_stem | mmlu_stem_8231 | Many people enjoy an adventure story. Others like mysteries that lead the reader to an exciting discovery. The story of the young British naturalist Charles Darwin combines both of these. That is why the author and illustrator Rosalyn Schanzer chose to write the children's book "What Darwin Saw". The book was published just in time for the 200th anniversary of Charles Darwin's birth on February 12, 1809. Rosalyn Schanzer carefully gathered Darwin's thoughts and observations from his diaries, letters and books. Many of the words in the book are Darwin's own. She also traveled to the Galapagos Islands and South America. She researched some of the places Darwin had visited on his trip on the ship, the Beagle in the 1830s. She took thousands of pictures, which helped her create the book's beautiful and color1ful drawings. These pictures show young readers what led Darwin to form his great discovery: the evolution of species through natural selection. "What Darwin Saw" tells of the adventures of a young man who traveled around the world as a scientist. The voyage of the Beagle took Charles Darwin to South America, where he rode horses with cowboys and met Native Americans in Argentina. He reported the eruption of the Osorno Volcano and experienced an earthquake in Chile. Darwin's observations showed him that environments can change very quickly and a great deal over time. Rosalyn Schanzer brings to life the clues that suggested to Darwin that living things evolve, or change, over time. She illustrates the unusual tortoises, birds and lizards that Darwin studied in the Galapagos Islands. She shows how Darwin came to understand that these island animals had differences, developed over time, that helped them survive. And she explains the theory of evolution through natural selection in a way that both children and adults will enjoy. Who is "What Darwin Saw" intended for? | [
"Parents.",
"Teachers.",
"Researchers.",
"Children."
] | null | D | |
mmlu_stem | mmlu_stem_4666 | BEIJING, Oct. 13 (Xinhuanet) -- A recent sudden temperature drop in most areas of China has set off fears of a possible return of severe acute respiratory syndrome (SARS) and the country has mobilized to prepare for another outbreak. North China's Tianjin Port resumed a temperature reporting system on Sunday. Any passengers through the port with a temperature above 38 degrees Celsius would be provided medical observation and reported to relevant authorities. Zhong Nanshan, a well-known anti-SARS scientist during the last outbreak, said it was unlikely the SARS virus would die out naturally and it would definitely come back, but predicted no widespread epidemic outbreak and the epidemic would not cause serious damage again. Caught unprepared this spring, Chinese authorities have learned to act quickly before the epidemic can take a hold. Chinese Vice-Premier Wu Yi Thursday urged strictly implementing the daily SARS epidemic reporting system and warned that people delaying reporting or hiding the true situation would be severely punished. In Beijing, the disease control center in Dongcheng District has recovered a 24 hour schedule for possible epidemic breakout. Every afternoon before 3:00 o'clock, the center receives SARS reports from every hospital in the district and then reports to the Beijing municipal disease control center and health bureau. In Beijing Xiehe Hospital, plans are ready for fever patients to receive treatment in a special section. Doctors in that ward, wearing protective clothing, will observe patients for any possible respiratory diseases. Patients with high fever and symptoms of respiratory diseases are required to be observed for one or two weeks. North China's Shanxi Province and Inner Mongolia Autonomous Region, the two other hardest-hit areas in the last SARS crisis, have both set up an emergency response mechanism and mobilized all concerned departments. The system has also been set up in rural Inner Mongolia. People are urged to pick up again the healthy habits they formed during the last SARS outbreak. Zhong Nanshan said the most important way to prevent SARS was to play more sports and maintain good ventilation. Spitting in public and eating wild animals were very dangerous, said Zhong. Which doesn't belong to Beijing's reaction to the possible epidemic? | [
"SARS reports must be given to the disease control center and health bureau.",
"Fever patients receiving special sections are ready.",
"High fever patients are to be observed for 3 weeks.",
"Doctors treating high fever patients will wear protection clothes."
] | null | C | |
mmlu_stem | mmlu_stem_17331 | Which characteristic is most common among animals living in a cold climate? | [
"layers of fat",
"thick bones",
"slow digestion",
"large lungs"
] | null | A | |
mmlu_stem | mmlu_stem_12891 | Doctor Carl was a very busy man. He always worked hard. He often forgot his families' birthdays. Yesterday afternoon he remembered it was his wife's birthday. He loved his wife. He wanted to give her a present. On his way home from hospital, he bought some beautiful flowers in a shop. When doctor Carl got home, he gave his wife the flowers and said, "Happy birthday to you, dear!" "It's April 20th today. I remembered your birthday this year." Mrs. Carl laughed and said, "My birthday was the day before yesterday, but thank you all the same. Better late than never!" Where did Carl work? | [
"In a hospital.",
"In a store.",
"In a shop.",
"In a family."
] | null | A | |
mmlu_stem | mmlu_stem_14687 | My Town the Best Place to Be! My town is a great place to live in . It's the best place to enjoy your free time. There are three movie theaters in the town. They are all good, but the one nearest my house is the best. Shopping is also easy, There are many shops and most of them are trendy. They sell very fashionable clothes. The prices are also cheaper than in other cities, so students love to shop here. There are also a lot of video and music stores. These are very popular with students. I go to the music store every week to buy a new CD. The most crowded place for students to hang out is the park . Everyone goes there ,so it's really interesting. Sometimes there are even street performers. Some students think they are boring ,but I think they are the most creative people. I want to be a street performer, too . The writer thinks street performers are _ . | [
"creative",
"boring",
"positive",
"trendy"
] | null | A | |
mmlu_stem | mmlu_stem_11343 | Cut out part of a healthy person's liver and transplant it into a sick person--it sounds like a complicated and dangerous operation , not to mention very expensive. But it is sometimes the only possible cure for a seriously ill patient with liver disease. Until now British scientists have just announced a new stem cell technique, which allows them to grow healthy liver cells outside human bodies. According to the researchers, it could be another five to ten years before the technique can actually be used to help patients with liver disease. However, they say the method might one day replace liver transplants altogether. The study was led by the University of Cambridge and the Welcome Trust Sanger Institute, a British genomics and genetics research institute. It was published in the journal nature on October 12,2011. The researchers took skin cells from a patient with a mutation in a gene called alphal-antitrypsin (a-l). This gene makes a protein that protects our bodies against inflammation . People with changed or damaged alphal-antitrypsin are not able to release the protein correctly from the liver, so the protein is trapped there and eventually leads to liver cirrhosis . Scientists then used an advanced technique to cut away the faulty section of DNA from a stem cell and replace it with a corrected one, according to the journal. The stem cells went on to produce fresh and healthy liver cells with normal protein levels. Scientists put the new liver cells into mice and found that they worked very well. Stem cells are the life source of all other cells in the body. They could transform medicine, providing treatment for blindness, spinal cord injuries and other serous injuries. They could also be used to produce new cells for damaged organs. David Lomas, a Cambridge biology professor who worked on the team, said: "If we can use a patient's own skins cells to produce liver cells that we can put back into the patient, we may prevent the future need for transplantation. " What can be inferred from the passage? | [
"Stem cells keep liver cells healthy and fresh.",
"Equaling medicine, stem cells can cure blindness, spinal cord injuries and other serous injuries",
"Stem cells can replace the damaged organs.",
"All other cells in the body can't work well without stem cells"
] | null | D | |
mmlu_stem | mmlu_stem_2606 | Generations of Americans have been brought up to believe that a good breakfast is essential to one's life. Eating breakfast at the start of the day, we have been told, and told again, is as necessary as putting gasoline in the family car before starting a trip. But for many people, the thought of food as the first thing in the morning is never a pleasure. So in spite of all the efforts, they still take no breakfast. Between 1977 and 1983, the latest year for which figures could be obtained, the number of people who didn't have breakfast increased by 33%--from 8.8 million to 11.7 million--according to the Chicago-based Market Research Corporation of America. For those who dislike eating breakfast, however, there is some good news. Several studies in the last few years have shown that, for grown-ups especially, there may be nothing wrong with omitting breakfast. "Going without breakfast does not affect work," said Arnold E. Bender, former professor of nutrition at Queen Elizabeth College in London, "nor does giving people breakfast improve work." Scientific evidence linking breakfast to better health or better work is surprisingly inadequate, and most of the recent work involves children, not grown-ups. "The literature," says one researcher, Dr Earnest Polite at the University of Texas, "is poor." The word "literature" in the last sentence refers to _ . | [
"stories, poems, play, etc",
"written works on a particular subject",
"newspaper articles",
"the modern literature of America"
] | null | B | |
mmlu_stem | mmlu_stem_9224 | Like human beings, dogs may catch cold because of cold weather, wet conditions or can also get it from other sick dogs. If a dog has a running nose and watery eyes, coughs or sneezes , then it is quite probable that the dog has caught cold. A dog's cold can get over after a few days without treatment but it totally depends upon the owner to treat it with medications or improve its immune power to get rid of the cold naturally. Following are some of the things you can do if your dog gets a cold. You can improve its immune power by giving it proper nutrient diet. Healthy food can really do wonders. Try to give it food which is either suggested by the vet or is healthy for your pet. Increase the intake of food which is rich in vitamins A, C and E. Keep your dog warm. The best place for your dog in winter is inside your house. Do not keep your dog outside when it is cold and wet. At home you can also keep the dog warm with the help of carpets. This will make him comfortable and help him to recover fast. Increase the fluid intake as it helps a lot. Water can be the best choice but you can also add broth in water which will give your dog strength. Warm water will make your dog more comfortable and will also keep the dog away from the respiratory infections . Steam treatment is considered to be effective in getting rid of cold. It makes the nasal passage wet, which helps proper breathing. Just fill your bathroom with steam and leave your dog inside the bathroom for 15 minutes. Do it nearly 2 to 3 times a day and you will see your dog recovering. These are some of the things you can do to help your dog recover from cold. However, if you are not able to find any improvement in its health, then turn to the vet for help immediately. Take your dog for regular checkups so as to avoid complications . When a dog catches cold, it is wrong to _ . | [
"keep it inside during cold and wet weather",
"leave it inside the bathroom full of steam",
"let it eat too much solid food",
"keep it sleeping on carpets at home"
] | null | C | |
mmlu_stem | mmlu_stem_12417 | Amy had three sons, Dave, Bill and Bob. Every year her sons sent her expensive gifts on her birthday. The eldest son Dave had a lot of money and he wanted his mother to have the most expensive gifts, but he didn't know what to buy. So he put an ad in the newspaper. " Wanted ---- the greatest gift for my mother." About a week before his mother's birthday, a man came to his office. He brought a big bird. This bird can speak six languages and sing eight songs," the man said." ".Really? I'd like to listen to it, " Dave said. The man made the bird talk in French and tell a joke in Japanese. Then the bird sang a beautiful song. Dave was very happy and paid eight thousands dollars for the bird. The next day Dave sent the bird his mother with a birthday card. The day after his mother's birthday he called his mother, " Well, mother," he asked, " What do you think of the bird?" " Oh, it's very delicious, dear," said his mother. How many songs could the bird sing? | [
"Five",
"Six",
"Seven",
"Eight"
] | null | D | |
mmlu_stem | mmlu_stem_951 | Mixing baking soda and vinegar makes the temperature of the solution decrease and release carbon dioxide. Which conclusion about this investigation is not valid? | [
"Mixing the chemicals caused them to absorb heat.",
"A chemical reaction took place.",
"New elements were formed.",
"The procedure caused a gas to be formed."
] | null | C | |
mmlu_stem | mmlu_stem_18971 | What causes a chemical reaction? | [
"mixing and heating edible items",
"putting water in a bowl",
"petting a small cat",
"rolling a ball on a floor"
] | null | A | |
mmlu_stem | mmlu_stem_2519 | Clyde, a small-clawed otter, was moved from Auckland Zoo to Wellington Zoo two months ago. The zookeepers hoped he and the other otter Bonnie might start a family together. But only two days after he arrived, Clyde went missing. He had dug his way under one of the walls and was nowhere to be seen. The zookeepers set up cages inside the zoo, with plates of Clyde's favorite fish in them, hoping to catch him. Two days went by and still there was no sign of Clyde. At last a couple saw Clyde at their house --- a whole kilometer away in Newtown. Clyde was hiding in an out-of-reach hole outside their laundry. The zookeepers arrived and set up some more traps to try to catch him. But Clyde is a pretty smart otter. Twice he managed to get the fish out of a trap without being caught. Five days after he'd escaped, Clyde's days on the run came to an end when he was finally caught in one of the traps. It was no good putting Clyde back in his old home---he'd only dig his way out again. So he and Bonnie were put into the zoo hospital. There was no chance of their escaping from there. Meanwhile, the zookeepers were working hard to make Clyde's old home safer. They put an iron barrier underground to stop him digging their way out. Then Bonnie and Clyde went home again. But a month after his first escape, Clyde was out again. Once more the zookeepers came hurrying to catch Clyde. They found him by following the bubbles he made in the river nearby. Nobody knew how Clyde had escaped. But this time he was only out for an hour. So---back he went to the hospital again. Poor Clyde. It seemed that he wasn't happy at Wellington Zoo, even though he and Bonnie were getting on well together. The keepers didn't like seeing him unhappy, so they planned to look for a home for him somewhere else. What do we know about Clyde? | [
"He often gets ill.",
"He is good at digging.",
"He likes hiding in a hole.",
"He escaped to meet Bonnie."
] | null | B | |
mmlu_stem | mmlu_stem_19068 | Why would happen if the screw was loose on a bicycle's tire? | [
"it would need to be repaired",
"you could tape it",
"it might fall off",
"it might get flat"
] | null | C | |
mmlu_stem | mmlu_stem_1261 | Which of the following statements best describes one way that the Moon is different from Earth? | [
"The Moon is not solid.",
"The Moon has no gravity.",
"The Moon has almost no atmosphere.",
"The Moon receives almost no solar light."
] | null | C | |
mmlu_stem | mmlu_stem_21623 | To positively impact an ecosystem | [
"smoke",
"litter",
"burn plastic",
"sow seeds"
] | null | D | |
mmlu_stem | mmlu_stem_1428 | The first grade class went on a bus to visit a farm. The farm was a long ways from their school. The farm was also far away from any other farms or houses. The farmers who lived there were the Nixon family. They grew corn. Sometimes when the weather was right, they would plant wheat, too. The fields were so large that the class could not see where they ended. Mr. Nixon gave all of the children a long ride in the fields on his tractor. The Nixon family also had a lot of farm animals. In the red barn next to their home, they kept a few cows and horses. Everyone fed hay to some of the cows. The farmers got milk from their cows. Some of the class got small bottles of fresh milk to take home with them. All the kids got to ride on the big brown horses the Nixons had. They went up into the nearby hills, where they could look down on the farm below. Around the farmyard there were many goats and chickens, who wandered around as they wished. The Nixon children liked to play with their goats, feed them peanut shells and pet them, like the first grade kids did with their dogs and cats. The smallest tried to bump the children with their hard heads and tiny horns! When it was almost dark, the school kids got back on the bus to go home. They were a little sad to leave the fun life of the farm children. But they brought back stories for all the rest of the school to hear. What animals tried to bump the children with their heads? | [
"chickens",
"goats",
"cows",
"sheep"
] | null | B | |
mmlu_stem | mmlu_stem_9492 | Have you ever had a doctor write you a prescription for three laps around a local trail ? How about a prescription for sit-ups? These treatments may not be as typical as the drugs that are usually used to treat our problems, but maybe they should be: a new report shows that regular exercise can be just as effective as prescription drugs for patients with depression and anxiety. "Individuals who exercise report fewer symptoms of anxiety and depression, and lower levels of stress and anger, " said the paper's co-author, Jasper Smith, director of the Anxiety Research and Treatment Program at Southern Methodist University. " Exercise may help patients with depression re-establish positive behaviors. For patients with anxiety disorders, exercise reduces their fears of fear and related bodily sensations such as a racing heart and rapid breathing." In a separate study, published in Physical Therapy journal, scientists studied 161 women who' d recently given birth to babies, and decided them into two groups. New mothers tend to develop post-partum depression , and the scientists wanted to find out whether exercise could prevent such problems. One group of women was given specialized exercises as part of an eight-week parenting education program, while the other was given only written education. The physical element seemed to do the trick; the researchers report that the number of women identified as "at risk" for post-partum depression was reduced by half in the exercising group. Another recent study shows that even when a patient has a chronic illness like cancer or a heart condition, regular exercise can dramatically increase wellbeing by reducing anxiety. Researchers from University of Georgia analyzed 40 clinical trials involving almost 3,000 patients, and found that the patients who reported exercising regularly had a 20% reduction in symptoms of anxiety compared to those who didn't exercise. As a result, they were more likely to follow their recommended treatment plan. Of course, there are still some situations where prescription drugs are necessary, and we recommend you leave it to your doctor to determine when that may be. But in many cases, the best medicine may simply be to get up off the couch and go for a walk. What is the text mainly about? | [
"Why should we take more exercise?",
"Several studies about the problem of depression and anxiety.",
"Regular exercise can reduce the symptoms of depression and anxiety.",
"The relationship between regular exercise and physical health."
] | null | C | |
mmlu_stem | mmlu_stem_15969 | We humans can play the piano . of course we play the piano with our ten fingers . But Teotronica can play with its 19 fingers . Teotronica is not a human . It is a robot . It is a special robot which can play the piano like humans . Nattei Suzzi is the inventor of Teotronica . Matteo Suzzi comes from Italy and he is more than thirty years old . He was interested in science when he was young . He always likes to use his head to create amazing things . He spent four years making the musical robot . He made the piano-playing robot at a cost of about 4,700 dollars . Teotronica is a special and great robot . It has more fingers than humans . It plays the piano faster than a human . Teotronica can sing as well when it plays the piano . It is the first robot to do so and many people feel excited to see it ,. Teotronica can even use its eyes to interact with humans because there are cameras in its eyes .Teotronica is amazing , isn't it ? How many fingers does Teotronica have ? | [
"Ten",
"Fifteen",
"Nineteen",
"Twenty"
] | null | C | |
mmlu_stem | mmlu_stem_5423 | In the frozen continent of Antarctica scientists fear an alien invasion -- not from outer space, but carried in people's pockets and bags. Seeds and plants accidentally brought to Antarctica by tourists and scientists may introduce alien plant species which could threaten the survival of native plants in the finely balanced ecosystem. "The people that were carrying the most had lots and lots of seeds. They really were real threats," said Dana Bergstrom, from the Australian Antarctic Division. "When we take things in through hitchhiking then we get species which are competitive. The plants and animals there are not necessarily competitive, so we'd start losing various precious biodiversity on the (Antarctic) continent", Bergstrom told Reuters. Amongst the alien species discovered were the Iceland Poppy, and Annual Winter Grass -- all from cold climates and capable of growing in Antarctica. The Antarctic Peninsula, where most tourists travel, is now considered a "hot spot" on the frozen continent and the warmer the climate, the easier for seeds to grow. "The peninsula is warming at some of the greatest rates on the planet," said Bergstrom. The study, the first continent-wide assessment of invasive species in Antarctica, surveyed about 1,000 passengers during 2007-2008, the first year of the International Polar Year, an international effort to research the polar areas. Bergstrom said the one alien seed that had gained a foothold is Annual Winter Grass. It is a strong weed in the sub-Antarctic and is on the Antarctic island of King George. It has also made its way to the tail part of the Antarctic continent. What is the effect of alien plant seeds to Antarctica? | [
"They contribute to the biodiversity.",
"They lead to the warming up of Antarctica.",
"They make the native plants more competitive.",
"They break the balance of the natural environment of plants."
] | null | D | |
mmlu_stem | mmlu_stem_1689 | There once was a little girl named Odette who lived in a wooded forest. One evening she was getting a ride home from school in her grandpa's truck she saw smoke rising from a fire far in the distance. Odette was worried about the fire and the danger facing all the animals that live in the forest. She immediately rushed home and waited for her mother, a doctor to come home. While she was waiting for her mother to come home she ate some popcorn and talked to her grandpa about the smoke. Odette's grandpa, Harvey told her that fires are almost always put out by hard working fireman. Odette feels better knowing that brave firefighters are out there bravely trying to save the forest and the animals that live there. She grabs her favorite stuffed animal, a monkey and says a prayer for her treasured forest and then falls asleep on the couch. She wake up to the friendly face of her smiling mother who tells her that the fire is safely put out. What is the mothers job? | [
"firefighter",
"monkey",
"doctor",
"swimmer"
] | null | C | |
mmlu_stem | mmlu_stem_11887 | Some colors people see late at night could cause signs of clinical depression . That was the finding of a study that builds on earlier study findings. They show that individuals who live or work in low levels of light overnight can develop clinical depression. Doctors use the word "clinical depression" to describe severe form of depression. Signs may include loss of interest or pleasure in most activities, low energy levels and thoughts of death or suicide. In the new study, American investigators designed an experiment that exposed hamsters to different colors. The researchers chose hamsters because they are nocturnal, which means they sleep during the day and are active at night. The animals were separated into four groups. One group of hamsters was kept in the dark during their night-time period. Another group was placed in front of a blue light, a third group slept in front of a white light, while a fourth was put in front of a red light. After four weeks, the researchers noted how much sugary water the hamsters drank. They found that the most depressed animals drank the least amount of water. Randy Nelson heads the Department of Neuroscience at Ohio State University. He says animals that slept in blue and white light appeared to be the most depressed. "What we saw is that these animals didn't show any sleep uneasiness at all but they did mess up biological clock genes and they did show depressive sign while if they were in the dim red light, they did not." Randy Nelson notes that photosensitive cells in the eyes have little to do with eyesight. He says these cells send signals to the area of the brain that controls what has been called the natural sleep-wake cycle. He says there's a lot of blue in white light. This explains why the blue light and white light hamsters appear to be more depressed than the hamsters seeing red light or darkness. _ tends to cause hamsters to be depressed. | [
"Dim light",
"Red light",
"Blue light",
"Darkness"
] | null | C | |
mmlu_stem | mmlu_stem_16049 | When you cough or sneeze, please turn your head away from others and cover your mouth with the full part of your hand. Afterwards, you should say," Excuse me." This is a rule I set for my students. It is so simple, but many kids have never been told to do _ . In fact, I notice adults cough and sneeze in public without putting a hand over the mouth. I hate traveling by underground in New York during cold and flu season, because it is certain that someone is going to stand right behind me and cough or sneeze on my neck. One important thing I point out to the kids is that after they sneeze or cough on their hand, they should wash their hands as soon as possible. Otherwise, they will be passing those _ along to everything and everyone they touch. In order to help the students remember this rule, I tell them about an old story. It says that when you sneeze, evil spirits jump into your body. If you don't cover your mouth, the spirits will enter, but if you cover your mouth, you will keep them out, We say "God bless you" when someone sneezes, and in Germany you should say "Gesundheit". That means "Good health to you." Both expressions are said that if you didn't cover your mouth in time and the spirits were able to enter your body. The kids love finding out the origins of these expressions and it encourage them to put the advice to use more often. What does the underline word _ " mean? | [
"Don't cough or sneeze in front of people.",
"Don't stand beside someone who coughs or sneezes.",
"Many people cough or sneeze on the underground train.",
"Cover your mouth when coughing or sneezing and say sorry."
] | null | D | |
mmlu_stem | mmlu_stem_2428 | Once upon a time, people wrote letters mostly with pen and paper. But the Internet has changed all that. Among computer users today, between 50 and 90 percent of written letters take place through e-mail. That's much different from the days when everyone relied on "snail mail" . More and more new e-mail users are asking, "How can I write better e-mail message?" Here are six tips for you. (1) Who are you writing to? Who are you writing to? A friend, a classmate, a teacher or a boss? Be sure the tone of your e-mail message is right for the receiver. Using slang or abbreviations may be all right for your friends. But business letters should use full names and complete sentences. (2) Be direct. Readers of e-mail have little patience. Say what you want to say directly. (3) Use short sentences. E-mail is quicker and more convenient than snail mail. It's also much easier to throw away. Don't use long sentences. Make your sentences short and clear. (4) Give enough details . A terrible e-mail message reads like this: "Did you get my e-mail?" Someone reading this will wonder, "Which e-mail? Sent when? About what?" Today's e-mail users sometimes get many messages every day, so be sure your messages have enough details to be understood. (5) Use the subject line well Readers see what's in the subject line of your message before anything else. Don't say "Hi, from Wang Peng"------ they can see who sent the message from the address. A short, direct explanation of the content of your message will get you a faster answer. (6) Don't be too slow to answer. Remember that in the world of e-mail, things happen fast. If you take longer than a week to answer someone's message, it may be too late. If you get an e-mail, you should answer it _ . | [
"any time you like",
"within a week",
"in two weeks",
"in the same day"
] | null | B | |
mmlu_stem | mmlu_stem_10134 | Some beach creatures are wonderful ----- like dolphins, but others are dangerous. Find out more about the dangerous ones -----the blue ringed octopus, puffer fish, the Blue Bottle, and stingrays. The blue ringed octopus The blue ringed octopus is not a very big creature but it is very dangerous. These octopuses are found all around Australian coast. They often lie in rock pools close to shore. The blue ringed octopus is usually a dull color1 but it shows its bright blue rings when it is in danger. If it is taken out of the water, it is able to bite a person and poison them. If this creature bites someone, they will feel numbness around the mouth, face and neck. Puffer Fish Puffer Fish are found in all Australian seas. They are very easy to catch but must not be eaten because their flesh and internal organs contain a poison. Anyone who does eat the flesh can become sick very quickly. They may even stop breathing. The Blue Bottle The Blue Bottle is found in most Australian waters. Blue Bottles float lightly on the surface of the water but their tentacles can be as long as 10 metres. Blue Bottles are much less dangerous than some other jellyfish but they can give a swimmer a bad sting if the swimmer accidentally touches them. Stingrays There are many different kinds of stingrays in Australian waters. They usually swim and feed on the bottom of the sea. Accidents can happen if people stand on them or try to pick them up. Stingrays have a sting on their tail. These stings have poison on them. If someone is stung the wound can easily become infected. If you swim in the Australian waters, you will probably _ . | [
"be bitten by the blue ringed octopus",
"stop breathing because of Puffer Fish",
"get a bad sting by the Blue Bottle",
"be poisoned by stingrays"
] | null | C | |
mmlu_stem | mmlu_stem_11689 | Register in person, by phone 264-8833, or by mail. Use form given. 178 IN Winchester St, Chicago Basic Photography This is an eight-hour course for beginners who want to learn how to use a 35mm camera. The teacher will cover such areas as kinds of film, light, and lenses . Bring your own 35mm camera to class. Course charge: $50. Jan.10,12,17,19, Tues. & Thurs. 6:00~8:00 p.m. Marianne Adams is a professional photographer whose photographs appear in many magazines. Understanding Computers This twelve-hour course is for people who don't know very much about computers, but need to learn about them. You will learn what computers are, what they can and can't do, and how to use them. Course charge:$75. Equipment charge:$10. Jan.14,21,28, Sat. 6:00~10:00 p.m. Joseph Saimders is Professor of Computer Science at New Urban University. He has over twelve years of experience in the computer field. Typing This course on week-days is for typing. You are tested in the first class and practice at one of eight different skill levels. This allows you to learn at your own speed. Each program lasts 20 hours. Bring your own paper. Course charge:$125. Materials charge:$25. Two hours each evening for two weeks. New classes begin every two weeks. This course is taught by a number of business education teachers who have effectively taught typing courses before. Oil Painting Oil paint is easy to use once you learn the basics. When you enroll in this oil painting course, you will learn to draw and paint using many oil painting techniques under complete guidance and instruction. Together--with the teacher's knowledge and your passion--we'll unlock your creativity and develop your potential! Course charge: $35. Jan. 5,12,19,26, Thurs. 2:00---5:00pm. Ralf Ericssion has taught beginners to masters and he has learned that everything builds on just a few basic concepts that he will show you here. There are typing courses _ . | [
"from Monday to Friday",
"on Saturdays and Sundays",
"from Monday to Saturday",
"on Tuesdays and Thursdays"
] | null | A | |
mmlu_stem | mmlu_stem_10785 | A developer edition of Sony's augmented reality smart glasses will go on sale in ten countries next month, the tech giant has announced. Pre-orders for the SmartEyeglass, costing $840 (PS620), are now being taken in the UK and Germany, with Japan and the US to follow shortly. The black-framed glasses are compatible with recent Android operating systems. Last month Google announced that it was withdrawing its smart glasses for redevelopment. Sony's initial model will come with a software development kit to encourage people to design apps for it, the company said. The glasses, which weigh 77g, contain an accelerometer, gyroscope, compass, image and brightness sensors, 3-megapixel camera and a microphone. They also come with a controller, designed to be attached to clothing, which contains a speaker, touch sensor and the device's battery. Text is displayed in front of the wearer in monochrome green. Apple chief executive Tim Cook has been open about his dislike of glasses as a wearable device. "We always thought that glasses were not a smart move, from a point of view that people would not really want to wear them," he told the New Yorker. "They were intrusive , instead of pushing technology to the background, as we've always believed." Stuart Miles, founder of tech site Pocket-lint, said: "I think [Sony is] wasting their time, energy and effort." "Google Glass obviously needed a complete rethink... I can't see how something thick-rimmed and more invasive-looking than Google Glass is going to catch on. "People are keen on wearables like fitness bands and watches, but they care about their faces. Wearing something on your head is a lot stronger than wearing something on your arm," he added. "The industry keeps pushing it but consumers just don't want it." Choose the true statements according to the passage. | [
"The glasses, which weigh more than 77g.",
"Tim Cook has been open about his dislike of glasses as a wearable device.",
"Last month Google announced that it was withdrawing its smart glasses for development.",
"Sony's later model will come with a software development kit to encourage people to design apps for... | null | B | |
mmlu_stem | mmlu_stem_3297 | Mr Smith made many tests with different animals and the monkey was the cleverest of all the animals. One day Mr Smith put a monkey in a room. He also put some small boxes in it. In one of the boxes there was some food. "How long will it take the monkey to find the food? " Mr Smith said to himself. " Let me wait and see. " He left the room and waited outside. Three minutes later, he put his eye to the keyhole . What did he see? He saw the eye of the monkey. The monkey was on the other side of the door and looked at Mr Smith through the keyhole. There was some food in _ of the small boxes. | [
"some",
"none",
"one",
"each"
] | null | C | |
mmlu_stem | mmlu_stem_5605 | Entire populations of American toads breed within the same few days at the same time each year, usually late April or early May. The toads hop to their breeding ponds after the ground has warmed and the first hard spring rain falls. To get there, many of the toads will cross roads that cut through their habitat. It will be a grand view of hopping toads as well as a disastrous killing by cars! The toads are "slow in moving at that time of year--it's still cool, they've been inactive--and they get killed" by cars when crossing roads, said Serrao, a naturalist. An April night five years ago, when Serrao went out to a country road to watch the moving of the toads, he counted 100 toads; 95 were hit by cars. A similar story can be told for several other species of toads, frogs, crocodiles and turtles around the world. The world's amphibians are reducing, and road-killing is just one factor behind it. Other better-known causes of the decline include global warming, insecticides , and the loss of wetlands. Serrao says unless these animals get help crossing the road, their local populations will disappear. Jackson, a biologist, said one way to help amphibians survive road crossings is to construct "amphibian tunnels" beneath the road. Jackson says tunnels should be a 0.6-meter-by-0.6-meter box, open at the top, and fitted with an iron grate to allow enough air and light into the tunnel. In addition, fences or walls should extend out from either side of a tunnel for about 30 meters, which guide amphibians toward the tunnels. European countries have built amphibian tunnels for decades. Jackson led a team that installed the first such tunnel in prefix = st1 /Americain 1987, which helped over 3/4 of the local amphibian population safely cross the road. Jackson says that there are about a hundred amphibian tunnels in the UStoday, but many of them were not carefully designed and probably not working well because land developers wanted to save money. When do American toads hop to breeding ponds? | [
"Before the ground is warm.",
"When the first heavy rain comes in spring.",
"After it is cool in sunny summer time.",
"When it is early April."
] | null | B | |
mmlu_stem | mmlu_stem_2852 | Last night's meteor shower left many people in the community dissatisfied and demanding answers. According to Gabe Rothschild, Emerald Valley's mayor, people gathered in the suburbs of the city, carrying heavy telescopes, expecting to watch the brightly burning meteors passing through the sky. What they found instead was a sky so brightened by the city's lights that it darkened the light of the meteors passing overhead. "My family was so frustrated," admitted town resident Duane Cosby, "We wanted to make this an unforgettable family outing, but it turned out to be a huge disappointment." Astronomers--scientists who study stars and planets--have been complaining about this problem for decades. They say that light pollution prevents them from seeing objects in the sky that they could see quite easily in the past. They call on people and the government to take measures to fight against it. There is yet a population besides professional and amateur star observers that suffers even more from light pollution. This population consists of birds, bats, frogs, snakes, etc. For example, outdoor lighting severely affects migrating birds. According to the International Dark-Sky Association, "100 million birds a year throughout North America die in crashes with lighted buildings and towers." Countless more animal casualties result from the use of artificial lighting. Clearly, people enjoy the benefits of lighting their evenings. But some scientists think it can be harmful for humans, too. They worry that exposure to light while sleeping can increase a person's chances of getting cancer. Emerald Valley is only one community that is becoming aware of the negative effects of light pollution. For years, Flagstaff, Arizona, has enforced lighting regulations in its city in order to assist astronomers at the Lowell Observatory. Similar efforts have been made worldwide, and a movement is underway to remind us to turn off lights when we are not using them, so that other creatures can share the night. It happened last night that _ . | [
"the city's lights affected the meteor watching",
"the meteors flew past before being noticed",
"the city light show attracted many people",
"the meteor watching ended up a social outing"
] | null | A | |
mmlu_stem | mmlu_stem_3979 | The smell of fresh air is becoming something of a distant memory, thanks to our increasing use of fragrance . From air fresheners to scented candles, we live in a world of scent. Recent figures show seven in ten people use air fresheners or scented candles to keep our homes smelling sweet. Yet recent records suggest that perfumed products could affect our health, causing problems including allergies , headaches and asthma . One leading expert believes nearly a third of people suffer health effects from being exposed to scents. A major problem is so-called "contact" allergy--where perfumes and scented products cause eczema when they come into contact with the skin. About one in 20 is thought to be affected by fragrance allergy. "Often it may not be immediately obvious that you have developed a fragrance allergy," says Dr. Baron. "You don't react immediately. Gradually, as you are exposed more and more, the body increases its reaction, until it becomes noticeable to you." People with pre-existing eczema are particularly vulnerable . "The eczema worsens in areas in contact with perfumes," says Dr. Baron. "But even those without allergies can be at risk of fragrance allergy." You can become suddenly allergic to perfumes and personal care products that you have been using for years. "Even if you know which fragrance causes a problem, it can be difficult to avoid, as most personal care products -soap, shampoo, sun cream and washing powder--contain fragrances," says Dr. Baron. And strong scents can also cause headaches. Fragrances activate the nose's nerve cells, stimulating the nerve system associated with head pain. To minimize risk, sufferers are advised to minimize the contact. "Fragrance suggest cleanliness - yet people are smelling a potentially dangerous chemical mixture," says Anne Steinemann, professor of the University of Washington. "We often use them to mask one problem - as with air fresheners - but create a greater one - adding poisonous chemicals to the air." What is the text mainly about? | [
"The world trend of using fragrance.",
"The benefits of using non-fragranced products.",
"The health problems caused by fragrance",
"The ways of removing allergy."
] | null | C | |
mmlu_stem | mmlu_stem_21898 | If a thing is tossed and goes uncaught, then it will | [
"reproduce",
"fall",
"dissolve",
"burn"
] | null | B |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.