dataset string | id string | question string | choices list | rationale string | answer string | subject string |
|---|---|---|---|---|---|---|
mmlu_stem | mmlu_stem_2774 | Tales From Animal Hospital David Grant David Grant has become a familiar face to millions of fans of Animal Hospital . Here Dr Grant tells us the very best of his personal stories about the animals he has treated ,including familiar patients such as the dogs Snowy and Duchess , the delightful cat Marigold Serendipity Diamond . He also takes the reader behind the scenes at Harmsworth Memorial Animal Hospital as he describes his day , from ordinary medical check-ups to surgery . Tales From Animal Hospital will delight all fans of the program and anyone who has a lively interest in their pet ,whether it be cat , dog or snake I ! $ 14.99 Hardback 272 pp Simon Schuster ISBN 0751304417 Isaac Newton : The Last Sorcerer Michael White Form the author of Stephen Hawking : A Life in Science , comes this colorful description of the life of the world's first modern scientist . Interesting yet based on fact , Michael White's learned yet readable new book offers a true picture of Newton completely different from what people commonly know about him . Newton is shown as a gifted scientist with very human weaknesses who stood at the point in history where magic ended and science began. PS8.99 Hardback 320 pp Fourth Estate ISBN 1857024168 Fermat's Last Theorem Simon Singh In 1963 a schoolboy called Andrew Wiles reading in his school library came across the world's greatest mathematical problem : Fermat's Last Theorem . First put forward by the French mathematician Pierre de Fermat in the seventeenth century, the theorem had _ and beaten the finest mathematical minds , including a French woman scientist who made a major advance in working out the problem , and who had to dress like a man in order to be able to study at the Ecole Polytechnique . Through unbelievable determination Andrew Wiles finally worked out the problem in 1995 . An unusual story of human effort over three centuries , Fermat's Last Theorem will delight specialists and general readers alike . PS12.99 Hardback 384 pp Fourth Estate ISBN 1857025210 Which of the following best explains the meaning of the word "baffle" as it is used in the text ? | [
"To encourage people to raise questions .",
"To cause difficulty in understanding .",
"to provide a person with an explanation .",
"To limit people's imagination ."
] | null | B | |
mmlu_stem | mmlu_stem_6224 | Last March, the H7N9 virus hit Shanghai, Anhui, Jiangsu, Zhejiang and so on. It seemed that most people who were infected with H7N9 had the common flu . Some people suffered from a fever or a cough. Don't be afraid--it's not easy to be infected with the virus. Here is some advice to help you protect yourself when it comes. Wash your hands. You need to wash your hands with soap and hot water before you eat, after you use the toilet, and after you touch animals, because your hands may carry viruses. Cover your nose and mouth. When someone sneezes or coughs, flu viruses can travel as far as one meter through the air, so you'd better stand a proper distance while talking to someone who has a cold. And always cover your mouth and nose with a piece of paper when you sneeze or cough, and then clean your hands. Wear a mask . Some doctors say that masks can stop the flu as much as 80%, but if you don't wash your hands often, it's no use wearing a mask. And it's necessary to wear the mask in the groups of people. Do sports often. Exercises will help make your body strong enough to resist the virus. Which of the following is TRUE according to the passage? | [
"Some people who were infected with the H7N9 virus had a toothache.",
"You should cover your mouth and nose with a piece of paper when you sneeze or cough.",
"Some doctors say that masks can stop the flu as much as 100%.",
"You don't have to wash your hands often."
] | null | B | |
mmlu_stem | mmlu_stem_3995 | High in the sky, a group of birds fly past. The 5-foot-tall creatures are whooping cranes, the tallest birds in North America noted for its loud call. The wild animals appear to be following much larger birds. But those aren't birds at all. They are three-wheeled aircraft called trikes , and the pilots flying them are wearing white helmets and white gowns. That plan might sound like a stupid idea, but it's not. The pilots are from an organization called Operation Migration. They are helping the whooping cranes learn to migrate, or move from one area to another when the seasons change. The cranes are endangered. In 1941,the species had dwindled to roughly 20 birds because of hunting and habitat loss. US wildlife officials counted 149 whooping cranes in November 1995,the most since the American government began taking censuses in the 1930s.Today,about 380 remain. In the fall, whooping cranes are supposed to migrate south. However, many of them don't know how. "With so few birds left, young whooping cranes typically don't have parents around to teach them," explains pilot Joe Duff. That's where the trikes come in. Each October, pilots dress up as whooping cranes and take to the skies in Wisconsin. The young birds follow them because they think the trikes are big whooping cranes. It takes about three months to reach south--with plenty of rest stops on the way. The pilots lead the cranes to refuges, or protected areas, in Florida. This spring, the birds will migrate north by themselves--no trikes needed! "It's nice because you know the birds are going to make it," Duff told WR News. We can learn from the passage that whooping cranes . | [
"are the tallest birds in the world",
"aren't birds at all",
"are increasing in the past 15 years",
"have no team spirit"
] | null | C | |
mmlu_stem | mmlu_stem_5051 | It is often necessary to release a fish, that is, set it free after catching, because it is too small, or you just don't want to take it home to eat. In some cases, releasing fish is a good measure that will help keep fish variety and build their population size. The Department of Game and Inland Fisheries (DGIF) encourages fishermen who practice catch-and-release fishing to use a few simple skills when doing so. The advice provided below will help make sure that the fish you release will survive to bite again another day. --When catching a fish, play it quickly and keep the fish in the water as much as possible. Don't' use a net in landing the fish and release it quickly to prevent it from dying. --Hold the fish gently. Do not put your fingers in its eyes. Don't wipe the scales off the fish because it might cause it to develop a disease and reduce its chance of survival. --Remove your hook quickly. If the hook is too deep or hooked in the stomach, cut the line and leave the hook in. The hook left inside will cause no serious problem to the fish. --Take good care of the fish by moving it gently in water . Release the fish when it begins to struggle and is able to swim. --Do not hold fish in a bucket or some other containers and later decide to release it. If you are going to release a fish, do so right away. With a little care and by following the suggestions given above, you can give the released fish a better chance of survival. People sometimes set a fish free after catching it because they _ | [
"don't want it to die",
"hope it will grow quickly",
"don't want to have it as food",
"want to practice their fishing skills"
] | null | C | |
mmlu_stem | mmlu_stem_2803 | Rare birds in the UK have been living far better than the more common birds over the last decade due to the efforts of conservation organisations, according to a new assessment. The research shows almost 60% of the 63 rare birds that live in the UK have increased over the last 10 years. By contrast, only about one third of common species have increased over the same period. Just 28% of rare birds have decreased over the same period, compared with four out of every 10 common birds. The rare birds described in the assessment with increasing populations include theosprey andcorncrake . All of these birds are subject to conservation action. The declining common birds include the nightingale,swift , house sparrow and redgrouse . These are suffering declines for a variety of reasons, including changes in farming practices. Dr David Noble, from the British Trust for Ornithology, said: "That some of our rarer birds have responded to targeted conservation action is great news. It shows just what can be achieved. What we need to do now is to continue the good work and use some of the lessons we have learned to help our more common birds." Dr Mark Avery, the conservation director of the Royal Society for the Protection of Birds (RSPB), said: "Over the last decade we've enjoyed some great conservation successes, including removing some threatened species from the World Conservation Union's Red List of Thratened Animals and increasing the populations of red kite, osprey, etc. However, these successes arecountered by continued declines of some widespread species." The overview of 210 native birds has been produced by a group of conservation organisations, to mark the publication ofThe State of the UK's Birdsreport, which is in its l0th year. The report was published by the RSPB for a group of conservation organisations. Which of the following can best explain Dr Mark Avery's words? | [
"The UK should not be satisfied with what they have achieved.",
"The UK should share their experience with other countries.",
"What conservation organisations do is far from satisfactory.",
"The RSPB is responsible for the decrease of common birds."
] | null | A | |
mmlu_stem | mmlu_stem_9452 | The Internet began in the 1960s as a small network of academic and government computers primarily involved in research for the prefix = st1 /U.S.army. Originally limited to researchers at a handful of universities and government departments, the Internet has quickly become a worldwide network providing users with information on a range of subjects and allowing them to purchase goods directly from companies via computer. By 1999, 84 millionU.S.citizens had access to the Internet at home or work. More and more Americans arc paying bills, shopping, ordering airline tickets, and purchasing stocks via computer over the Internet. Internet banking is also becoming increasingly popular. With lower overhead costs in terms of staffing and office space, Internet banks are able to offer higher interest rates on deposits and charge lower rates on loans than traditional banks. "Brick and mortar" banks are increasingly offering online banking services via some special websites to enlarge their traditional services. At present, 14 percent of Internet households conduct their banking by means of the Internet, and the figure is expected to double during the next two or three years. Increasing commercial use of the Internet has heightened security and privacy concerns. With a credit card, an Internet user can order almost anything from an Internet site and have it delivered to their home or office. Companies doing business over the Internet need many security measures to protect credit card, bank account, and social security numbers from unauthorized access as they pass across the Internet. Any organization that connects its networks to the global Internet must carefully control the access point to ensure that out-siders cannot disturb the organization's internal networks or gain unauthorized access to the organization's computer systems and data. Which commercial usage of the Internet does the author NOT refer to? | [
"Buying airline tickets.",
"Trading stocks.",
"Applying for a credit card.",
"Internet shopping"
] | null | C | |
mmlu_stem | mmlu_stem_19065 | You can let someone know you are at the door thanks to a | [
"lemonade",
"cars",
"grass.",
"power plant"
] | null | D | |
mmlu_stem | mmlu_stem_653 | Which of the following elements is the least electrically conductive? | [
"sodium",
"tungsten",
"zinc",
"argon"
] | null | D | |
mmlu_stem | mmlu_stem_13546 | North American black bears are shy animals. They are fearful by nature, and will usuallyrun away if they see or hear people. Because of this, it can be difficult for scientists to learnabout these animals. In order to study black bears, researchers from New Jersey, USA, catch bears and usedrugs to help them go to sleep. Researchers then work out the size and the weight of the bear,take blood to test for diseases, _ a tooth and take it to the lab to find out its age. Fromthese studies, researchers want to find out how many bears live in New Jersey, how long theylive, and how many babies they produce. But in Minnesota, USA, researchers study bears that are completely awake. The bears knowthe researchers' voices and they are not afraid of die research team. With the help of a few grapes to keep the bears busy, researchers can touch them to check their hearts, look at their teeth, and do other jobs.Researchers can also walk or sit with bears for hours and make videos to learn about their everyday lives. In both places, the main purpose is the same--to make sure there is a healthy population of black bears. But theresearch methods and the kinds of information that researchers, are able to collect are quite different. What do the two studies have in common? | [
"Research places",
"The main purpose.",
"Research methods.",
"Collected information."
] | null | B | |
mmlu_stem | mmlu_stem_15613 | A man made a nice talking machine. It could weigh people. The man wanted to try the machine before he could make a lot of these kinds of machines. He put the machine into the waiting room of a station . There were always lots of people in and out there. The first one began to use the machine. It was an Indian woman. When she stand on the machine, the machine thought for a few minutes to decide which language it should speak. "Good morning, madam," it said in Indian. "Your weight is 72 kilos. That's three kilos more. If you eat more fruit and vegetables, you will be soon all right. Wish you a nice day." The second one who used the machine was a nice Chinese girl. She stood on the machine and waited to hear her weight. "Good morning , Miss ,"the machine said in Chinese. "Your weight is 45 kilos. It's all right for your age and height. Go on to eat what you eat every day. Wish you a nice day." The third one to use the machine was a very fat American woman. She thought for a long time before standing on the machine. But as soon as she stood on the machine, the machine spoke quickly in English , "Good morning . Will one of you get off?" The nice talking machine could _ | [
"tell people what they should eat",
"weigh and talk to people",
"tell people how old they are",
"tell a story"
] | null | B | |
mmlu_stem | mmlu_stem_14432 | What's the red star in the sky through a telescope ? It is Mars. Do you want to know more about it? Take the "Mars Orbit Express"! "Mars Orbit Express" is a space probe . It was sent towards Mars by American scientists on August 12th,2005. Its tasks are to study Mars' atmosphere and return photos to Earth. But before that "Mars Orbit Express" must travel about 100 hundred million kilometers and seven months. It reached Mars' orbit in March,2006. Mars and Earth have similar weight and size. However,Mars is closer to the sun than Earth. Mars is very cold. The average temperature is below 50degC. The temperature at noon only reaches 20degC during a Mars day. Its atmosphere is mostly CO2. It has much sand and two moons---Phobos and Deimos. Scientists think Earth and Mars had similar beginnings 4.6 billion years ago. But while Earth supports millions of lives,Mars becomes bad. "Earth easily could have turned out like that." said an scientist, "It is important for us to find out why and Mars Orbit Express' should do that." "Mars Orbit Express" also would help scientists to learn what might happen to Earth in the future. "Mars Orbit Express" would work for about four years. One of the tasks of Mars Orbit Express is _ . | [
"taking pictures of Mars",
"studying the weight of Mars",
"finding out distance between Earth and Mars",
"telling the time it takes to go from Earth to Mars"
] | null | A | |
mmlu_stem | mmlu_stem_3648 | This is VOA. The National Cryptologic Museum is on Fort George G. Meade, a military base near Washington, DC. The method of hiding exact meanings is called coding. People have used secret codes throughout history to protect important information. The National Cryptologic Museum celebrated 60 years of cryptologic excellence in 2012. One event there marked the sixtieth anniversary of the National Security Agency. Two former NSA workers shared their memories of operating a code machine called Sigaba. In 1940, an American woman named Genevieve Grotjan found some information being repeated in Japanese coded messages. Her discovery helped the United States understand secret Japanese diplomatic messages. After the United States understood the code, it was possible to study messages from the Japanese ambassador to Germany and to his supervisors in Japan. Understanding these messages helped the United States prepare for a possible war in the Pacific with Japan. After the attack on Pearl Harbor. the American naval commander in the Pacific Ocean was Chester Nimitz. His forces were much smaller than the Japanese Naval forces. And the Japanese had been winning many victories. Joseph Rochefort had worked for several months to read the secret Japanese Naval code called JN-25. If he could understand enough of the code, he would be able to give Admiral Nimitz very valuable information. From the beginning of 1942, the Japanese code discussed a place called "AF." Joseph Rochefort felt the Japanese were planning an important battle aimed at "AF." After several weeks, he and other naval experts told Admiral Nimitz that their best idea was that the "AF" in the Japanese code was the American-held island of Midway. Admiral Nimitz said he must have more information to prepare for such an attack. The Navy experts decided to trick Japan. They told the American military force on Midway to broadcast a false message. The message would say the island was having problems with its water-processing equipment. The message asked that fresh water be sent to the island immediately. This message was not sent in code. Several days later, a Japanese radio broadcast in the JN-25 code said that "AF" had little water. Joseph Rochefort had the evidence he needed. "AF" was now known to be the island of Midway. He also told Admiral Nimitz the Japanese would attack Midway on June 13.The battle that followed was a huge American victory. That victory was possible because Joseph Rochefort learned to read enough of the Japanese code to discover the meaning of the letters "AF." One American code has never been broken. Perhaps it never will. It was used in the Pacific during World War Two. For many years the government would not discuss this secret code. Listen for a moment to this very unusual code. Then you may understand why the Japanese military forces were never able to understand any of it. The code is in the voice of a Native American. The man you just heard is singing a simple song in the Navajo language. Very few people outside the Navajo nation are able to speak any of their very difficult language. At the beginning of World War Two, the United States Marine Corps asked members of the Navajo tribe to train as Code Talkers. The Cryptologic Museum says the Marine Corps Code Talkers could take a sentence in English and change it into their language in about 20 seconds. A code machine needed about 30 minutes to do the same work. The Navajo Code Talkers took part in every battle the Marines entered in the Pacific during World War Two. The Japanese were very skilled at breaking codes. But they were never able to understand any of what they called "The Marine Code." The Cryptologic Museum has many pieces of mechanical and electric equipment used to change words into code. It also has almost as many examples of machines used to try to change code back into useful words. The NSA was founded _ . | [
"in 1940",
"1942",
"in 1952",
"in 2012"
] | null | C | |
mmlu_stem | mmlu_stem_3693 | Donald was not very good at maths. He could not understand the teacher's explanations. Even when the teacher explained something a second time, Donald still could not understand it. "Never mind," Donald told himself. "I'm quite good at other subjects. I'll cheat in the maths exam, then I won't be in trouble." "I will sit next to the boy who's best at maths," he thought, "and copy down his answers." The day of the exam came, and Donald sat next to Brian Smith, who always was at the top of the class in maths. Donald carefully copied Brian's answers onto his own exam paper. At the end of the exam, the teacher collected the papers and graded them. Then she said, "Well, boys and girls. I've decided to give a prize to the student who got the highest grade. However, it's difficult for me to decide who to give the prize to, because two students, Doanld and Brian, got the same grade." "Let them share it," one of the other students said. "I have thought about that," the teacher said, "but I have decided to give the prize to Brian." Donald was angry when he heard this. He stood up and said. "That is not fair. I got the same grade as Brian." "That is true," the teacher said. "However, Brian's answer to Question 18 was 'I don't know,' while yours was 'Neither do I.'" Donald got the same grade as Brian because _ . | [
"both boys were good at maths",
"Donald cheated",
"Brian copied Donald's answers",
"the question were very easy"
] | null | B | |
mmlu_stem | mmlu_stem_20490 | A creature may reproduce during | [
"a stage of maturity",
"a concert on stage",
"a stage of denial",
"a staging of hosts"
] | null | A | |
mmlu_stem | mmlu_stem_21983 | Duracell's convert chemicals to | [
"ocean current",
"sunlight",
"magic",
"voltage"
] | null | D | |
mmlu_stem | mmlu_stem_14519 | * You'll never be good at Maths. It's generally accepted that boys are good at Maths and girls aren't. The fact is that it isn't true. When girls reach their teens, most of them lose their interest in Maths. They think they are females. They want to stay away from things that are boys' things, and Maths is still thought of to be a boy's thing. The Maths class is hard, but if you give it a chance, you could be great at Maths, especially because you are a girl. * Being skinny is good. Lots of websites tell visitors that losing interest in eating is a beautiful thing. They are lying. Losing interest in eating is a disease, not a healthy thing. It can kill you. * You are not supposed to make as much money as a guy. It's said that in 2014 women who work full-time earn about 23 percent less than guys earn. Once you see real women successful in cool jobs, you'll truly get that you're worth just as much or more than any guys. * Caffeine will help you study better. Caffeinated soft drinks have long been advertised as must-haves for women when you have to work very hard. But if you want to do your body a big favor, you'd better give up caffeine. Supposing in 2014 a man earns $20,000, how much may a woman doing the same job get? | [
"About $20,000.",
"About $25,000.",
"About $10,000.",
"About $15,000."
] | null | D | |
mmlu_stem | mmlu_stem_1596 | Joey went to the doctor yesterday. He was a little scared because he might have to get a shot, but his mother promised that it wouldn't hurt. During the time they were in the waiting room, Joey played with some blue and green blocks and some toy cars that the doctor kept there for the children who came to see him. He also met another little boy named Bobby who also had to see the doctor. Bobby liked playing with the cars more than the blocks, but Joey liked playing with both of them. Joey also met a little girl named Sandy who was playing with some dolls the doctor also had for the children. When it was Joey's turn to see the doctor, his mother led him into one of the rooms and had him sit on a yellow chair. The doctor was a friendly man who wore glasses. He took Joey's temperature and looked in his ears, then asked him a few questions about how he had been feeling. When Joey said his throat hurt a little, the doctor took a look at it as well. He said everything looked okay, and Joey wouldn't need any shots this visit. On the way out Susan the nurse let Joey take a red lollipop from a basket on her desk. By the time Joey got home, he thought the doctor wasn't so scary after all. What did the doctor check when he was seeing Joey? | [
"Temperature, ears and throat",
"Ears and throat",
"Temperature, eyes and ears",
"Temperature and throat"
] | null | A | |
mmlu_stem | mmlu_stem_16258 | Hi, boys and girls! A new Mama store is in No. 1 Middle School now. Come and see at our great sale! We have bread for 3 yuan. Xiangpiaopiao milk tea is on sale for 2 yuan. Vegetable hamburgers are only 3 yuan. Do you need notebooks? They are only 6 yuan for three. We also have pens in all colors, only 1 yuan each . Some students want to buy socks. We have black socks for only 10 yuan for 3 pairs. For girls, we have socks in pink and purple, they are very nice. Come and buy your things at our great sale. This article is _ . | [
"a letter",
"a notice",
"an e-mail",
"an ad"
] | null | D | |
mmlu_stem | mmlu_stem_18975 | Which doesn't contain water? | [
"Sea of Tranquilitiy",
"Caspian Sea",
"Dead Sea",
"Caribbean Sea"
] | null | A | |
mmlu_stem | mmlu_stem_4656 | 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. Why did Dr. Vincent have a special place in her heart? Because _ . | [
"Dr. Vincent was handsome",
"Dr. Vincent was caring and kind",
"Dr. Vincent carried out the operation.",
"Dr. Vincent offered the money the operation needed."
] | null | B | |
mmlu_stem | mmlu_stem_17994 | Hydrochloric acid (HCl) reacts with sodium hydroxide (NaOH) to produce a saltwater solution. What are the products of this chemical reaction? | [
"NaCl and H_{2}O",
"NaOH and HCl",
"HCl and NaCl",
"NaOH and H_{2}O"
] | null | A | |
mmlu_stem | mmlu_stem_13256 | Lions are big and strong.They have bright eyes, sharp teeth and black points on their brown bodies.So they look beautiful. Lions can run fast.They are good at catching other animals.Lions like living as a family until baby lions are 2 years old.A lion lives alone during most of its life. Now, many hunters hurt lions for their fur and meat.They sell their meat to people for meals.They use their fur to make clothes and bags.We must stop this.It is wrong for people to kill lions.We can write to newspapers about the danger the lions are facing.We should tell the government and people about the problems.If we do nothing, soon there will be no lions in the world any more! What are lions like? | [
"Big and strong",
"Big and light",
"Black and white",
"Bright and Slim."
] | null | A | |
mmlu_stem | mmlu_stem_7893 | In-line skating is a fun sport that everyone can enjoy. Follow these safety tips to keep skating safe and fun. Step 1: Gear up! Even before you put on your skates, put on all your safety gear . Step 2: Buckle up! Strap on your skates. Make sure they fit well and are snugly around your ankles. This helps your ankles stay strong and straight. Step 3: Fall down! You probably do not usually try to fall. But it is good to practice falling on skates. Fall forward onto your knee pads. Put out your hands and let your wrist guards hit the ground. See? Are you surprised that it doesn't hurt? Practice falling until it is easy to fall forward and get up again. If you are not afraid to fall, you will try new things. Knowing how to fall will help you be a better skater and find your balance. When you can stay balanced, you won't fall as much. Step 4: Stop! Make sure you can stop on your skates. The quickest and safest is probably the brake stop. The brake is usually on the back of the right skate. The brake stop: Roll forward with your skates pointing the same way. Let your right skate roll a little forward. Bend your knees as if you are sitting down. Then press your right heel down hard. This will make your brake pad drag on the ground until you stop. The T stop: Roll forward with your skates pointing the same way. Then turn your right foot out so the toes are pointing to your right. Drag your right skate. Let the wheels drag on the ground until you come to a stop. Another way to stop is to run or jump onto the grass. Step 5: Roll around! Find a flat, smooth place to practice. Do not skate in streets. Parks and playgrounds are good places to practice. Look for "No skating" signs to make sure you can skate there. According to the article, which of these steps are most important for a new skater? | [
"Learn to fall and stop safely.",
"Find a class and skate fast.",
"Relax and have fun.",
"Buy expensive gear and skates."
] | null | A | |
mmlu_stem | mmlu_stem_1134 | Which group consists only of living things? | [
"rabbit, seed, bird",
"seed, bird, wind",
"Volcano, candle, rabbit",
"wind, candle, volcano"
] | null | A | |
mmlu_stem | mmlu_stem_712 | Which causes the GREATEST change in a grassy field over time? | [
"The time of day",
"Amount of yearly rainfall",
"Number of birds nesting",
"Seasonal migration of animals"
] | null | B | |
mmlu_stem | mmlu_stem_12672 | Tom's parents are away for 2 days. So he goes shopping in the supermarket. He makes a shopping list. There are lots of people in the supermarket. He plans to make sandwiches for his lunch. He buys bread and butter. Then he buys ham and cabbages. He also buys two kilos of apples. They are 5 yuan a kilo. The apples look good. He has everything on his shopping list. Then he goes home. , Tom doesn't buy _ . | [
"bread",
"butter",
"fish",
"cabbages"
] | null | C | |
mmlu_stem | mmlu_stem_20599 | Ferrous metals can comprise items such as | [
"steel clogs",
"gold cats",
"bronze shoes",
"Fe armor"
] | null | D | |
mmlu_stem | mmlu_stem_16317 | Coke is the most popular drink and many people enjoy it. But they don't know it has many other uses. * Cleaning. You can use it to clean your hands, your bathroom or your clothes. When you do some washing and you can put some Coke into the water. And Coke can make them cleaner. * Cooking. Put Coke on beef or pork while it's cooking. And we can also cook chicken with Coke, it's very nice. * Health &beauty. Coke can make you more beautiful. Use it on your hair or your skin to make them brighter and smoother. * Housework help. Watering flowers with Coke can make them more lovely and beautiful. So give Coke a try next time. How many other uses of Coke are there in the passage? | [
"3.",
"4.",
"5.",
"6."
] | null | B | |
mmlu_stem | mmlu_stem_8544 | Wilma Subra had no intention of becoming a public speaker. After graduating from college with degrees in chemistry and microbiology, she went to work at Gulf South Research Institute in Louisiana. As part of her job, she conducted field research on toxic (poisonous) substances in the environment, often in minority communities located near large industrial polluters. She found many families were being exposed to high, sometimes deadly levels of chemicals and other toxic substances. But she was not allowed to make her information public. Frustrated by these restrictions, Subra left her job in 1981, created her own company and has devoted the past two decades to helping people fight back against giant industrial polluters. She works with families and community groups to conduct environmental tests, interpret test results, and organize for change. Because of her efforts, dozens of toxic sites across the country have been cleaned up. And one chemical industry spokesperson calls her "a _ top _ gun" for the environmental movement. How has Subra achieved all this? Partly through her scientific training.Partly through her commitment to environmental justice. But just as important is her ability to communicate with people through public speaking. "Public speaking," she says, "is the primary vehicle I use for reaching people." If you had asked Subra before 1981 "Do you see yourself as a major public speaker?", she would have laughed at the idea. Yet today she gives more than one hundred presentations a year. Along the way, she's lectured at Harvard, testified before Congress, and addressed audiences in 40 states, as well as in Mexico, Canada, and Japan. What did Wilma Subra study for her job before 1981? | [
"Chemistry and microbiology.",
"Families affected by toxic chemicals.",
"Toxic substances in the environment.",
"Minority communities near industrial polluters."
] | null | C | |
mmlu_stem | mmlu_stem_21019 | The building of a hotel caused many species to be | [
"acclimated",
"celebrated",
"hunted",
"destroyed"
] | null | D | |
mmlu_stem | mmlu_stem_21310 | A ceramic dish from the dishwasher will be | [
"dirty",
"cold",
"clear",
"warm"
] | null | D | |
mmlu_stem | mmlu_stem_14793 | For 13-year-old Brooke Martin, seeing her golden dog Kayla has become much easier, even when she's not at home. Martin made a kind of machine--iCPooch. It allows pet owners to video chat with their pets and sends food from other places.2-1-c-n-j-y When a dog owner puts the iCPooch app on a phone, he or she can connect to the iCPooch machine at home and start talking. The owner's image and voice will be on the screen. When the owner pushes a button on the iCPooch app, the machine will give the dog some food that has been stored inside the box. How could Martin come up with the idea? The idea came to the Washington girl when she took a business class last year. That led her to think about helping her pet Kayla. Kayla always looked sad when she was left alone at home."I wanted to know how you could talk to your dog if you were not at home. And what if you were able to give them a treat while you were away?" Martin explained her idea. Now Martin and her family have set up a company. They've had investments from businessmen and asked a factory to make the product. They expected to sell 8,000 products by the end of 2015. Martin is satisfied with her success. "A year ago, I never thought that I would be able to start a business, or even having an idea for a business," she said. "I've learned that we are supposed to hold on to your dreams." What color is Brooke Martin's dog? | [
"It's white.",
"It's yellow.",
"It's golden.",
"It's black."
] | null | C | |
mmlu_stem | mmlu_stem_19293 | Breathing is when the lungs convert oxygen from inhaled air into | [
"oxygen dispersed from respiratory bronchioles through air sacs to hemoglobin proteins",
"Glucose particles in the blood",
"nitrogen oxide in the blood",
"carbon monoxide in the blood"
] | null | A | |
mmlu_stem | mmlu_stem_10286 | What do the common cold, the flu, and AIDS have in common? They are all diseases caused by viruses, tiny microorganisms that can pass from person to person. It is no wonder that when most people think about viruses, finding ways to _ them is what is on people's minds. Not everyone runs from the tiny disease carriers, though. In Cambridge, Massachusetts, scientists have discovered that some viruses can be helpful in an unusual way. They are putting viruses to work, teaching them of the world's smallest rechargeable batteries. Viruses and batteries may seem like an unusual pair, but they are not so strange for engineer Angela Belcher, who first came up with idea. At the Massachusetts Institute of Technology in Cambridge, she and her team bring together different areas of science in new ways. In the case of the virus-built batteries, the scientists combine what they know about biology, technology and production techniques. Belcher's team includes Paula Hammond, who helps put together the tiny batteries, and Yet-Ming Chiang, an expert on how to store energy in the form of a battery. Many batteries are already pretty small. However, every year, new electronic devices like personal music players or cellphones get smaller than the year before. As these devices become smaller, ordinary batteries won't be small enough to fit inside. The ideal battery will store a lot more energy in a smaller package than ordinary batteries. Right now, Belcher's model battery, a metallic disk completely built by viruses, looks like a regular watch battery. But inside, its parts are very small--- so tiny that you can only see them with a powerful microscope. How small are these battery parts? To get some idea of the size, pluck one hair from your head. Place your hair on a piece of white paper and try to see how wide your hair is--- pretty thin, right? Although the width of each person's hair is a bit different, you could probably fit about 10 of these virus--- built battery parts, side by side, across one hair. These microbatteries may change the way we look at viruses. What is the passage mainly about? | [
"Diseases caused by viruses.",
"An engineer called Angela Belcher.",
"Batteries built by viruses.",
"Rechargeable batteries."
] | null | C | |
mmlu_stem | mmlu_stem_2285 | 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_16301 | Almost everyone has dropped some food on the floor and still wanted to eat it.If someone saw you drop it, he or she might have shouted, " 5-second rule!" This so-called rule says food is OK to eat if you pick it up in five seconds or less.But is that true? Professor Anthony Hilton from Ashton University, UK, tested the rule with his students.They found that food dropped for five seconds is less likely to contain bacteria than if it sits there for longer. For the study, Hilton and his students tested a lot of foods----bread, pasta, cookies and candy--to see how much bacteria they had when they made contact with the floor.They allowed the food to lie on the different types of flooring--carpet , laminate and tile -- for three seconds to 30 seconds. Not surprisingly, the longer the food was on the floor, the more bacteria it had.And the type of floor where the dropped food landed had an effect.Bacteria are least likely to transfer from carpet, while they are most likely to transfer laminate or tiled surface after more than five seconds. The study also found that the wetter the food, the more likely it was to pick up bacteria.Although most people are happy to follow the 5-second rule, eating food dropped on the floor still carries an infection risk."It very much depends on which bacteria are on the floor at the time." Hilton told Forbes. Hilton's test wanted to find out _ . | [
"if the \"5-second rule\" is true",
"the students' favorite food",
"which food is easily dropped",
"if different types of floor have different bacteria"
] | null | A | |
mmlu_stem | mmlu_stem_21397 | Fueling an electric vehicle requires | [
"a socket",
"petroleum products",
"a gasoline pump",
"fossil fuels"
] | null | A | |
mmlu_stem | mmlu_stem_9396 | The TV shows a baby's pram rolling off a train platform as the mother makes a mad rush to save her son, but she is too late and it falls onto the rails in front of an incoming train. This heart-stopping scene happened yesterday at Ashburton station in Melbourne, Australia. But the story has a happy ending: the six-month-old baby survived with just a cut on his forehead, although the pram was dragged about 35 metres by the braking train. The nurse Jon Wright said the boy just "needed a feed and a sleep" and didn't need to stay in hospital. "Luckily, he was strapped into his pram at the time, which probably saved his life. I think the child is extremely lucky, " Wright told theHerald Sunnewspaper after the baby was taken to hospital with minor injuries. Fortunately the train was already slowing down to stop at the station so it stopped quickly when the driver put on the brakes as soon as he saw the pram fall in front of him. Rail firm Connex is to look into how the pram rolled off the platform. The accident came one day after Connex started a child safety awareness activity warning parents to keep babies strapped into their prams at all times while on platforms. The accident happened at the same time as the "balloon boy "story in the US, in which a six-year-old Colorado boy was reported to be trapped in a flyaway balloon. However, he was later found hiding in the family's garage. Many people believe that it had all been a publicity _ by the parents. No such doubts surround the baby on the train platform. In the accident, the baby _ . | [
"almost fell onto the rails",
"needed to stay in hospital",
"was badly injured by the train",
"was pulled a long distance in the pram by the train"
] | null | D | |
mmlu_stem | mmlu_stem_9840 | Howling is a behavior commonly observed among a wolf nark. An animals, wolves work together to hunt and rely on howling was an important means of communication each other. There are different explants of a wolf's howl and it appears that there may be more to discover. One theory is that wolves howl to bend better together. It's almost as if howling together helps the pack stay together. Perhaps something similar to people feeling a sense of involvement with each other when singing a song together . But this theory may be wrong, explains Fred H. Harington, a professor who studies wolf behavior. Indeed, there have been tines when wolves have been seen one moment howling in a exhorts, and the next, quarreling anions each other. It appears that usually the lowest-tanking menthes of the pack may actually be "punished" for Joining in the churs at times. So is howling a way to strcagthen a social boad or just a way to reconfirm status among its members? ----Why do welves howl for sure? What is cleat, however, is that howling is often used among packmates to locate each other. Hunting grounds are distant and it happens that woloves may separate from one another at times. When this happens, howling appcars to be an ercellent means of gathering. Howling, interestingly, is a contagious behaviour. When one wolf starts to howl, very likely others will follow. This is often seen to occat in the morning, as if wolves were doing some sotr of "roll rall"where wolves all howl togeter to howl, very likely others will follow. This is often seen to occar in the morning, as if wolves were doing w some sotr of "roll call"where wolves all howl together to repotr their pteence. Reseatchers are sure that wolves often howl to _ . | [
"show their ranks",
"find their companion",
"report the missing ones",
"express their lonelingess"
] | null | B | |
mmlu_stem | mmlu_stem_16463 | Gina has a small room at home. Look! This is her room. Some things are in her room. Her schoolbag is on her desk. Her red jacket is on her bed. An E-dictionary is on her bed, too. It's Grace's. Grace Smith is her friend. Her books are on the sofa. And her teacher Mr. Green's pen is in the bookcase. She borrowed it. She has a set of keys in her desk. She has a computer game. A model plane is under her desk. It is her father--Tim Miller's. Her mother--Emma Miller's sweater is in her room, too. The model plane is _ . | [
"Emma's",
"Tim's",
"Gina's",
"Grace's"
] | null | B | |
mmlu_stem | mmlu_stem_3752 | We discuss the issue of when to help a patient die. Doctors of our generation are not newcomers to this question. Going back to my internship days, I can remember many patients in pain, sometimes in coma , with late, hopeless cancer. For many of them, we wrote an order for heavy medication--morphine by the clock. This was not talked about openly and little was written about it. It was essential, not controversial. The best way to bring the problem into focus is to describe two patients whom I cared for. The first, formerly a nurse, had an automobile accident. A few days later her lungs seemed to fill up; her heart developed dangerous rhythm disturbances. So there she was: in coma, on a breathing machine, her heartbeat maintained with an electrical device. One day after rounds, my secretary said the husband and son of the patient wanted to see me. They told me their wife and mother was obviously going to die; she was a nurse and had told her family that she never wanted this kind of terrible death, being maintained by machines. I told them that while I respected their view, there was nothing deadly about her situation. The kidney failure she had was just the kind for which the artificial kidney was most effective. While possibly a bit reassured, they were disappointed. Here was the head surgeon seemingly determined to keep everybody alive, no matter what. Within a few days the patient's pacemaker could be removed and she awoke from her coma. About six months later, the door of my office opened and in walked a gloriously fit woman. After some cheery words of appreciation, the father and son asked to speak to me alone. As soon as the door closed, both men became quite tearful. All that came out was, "We want you to know how wrong we were." The second patient was an 85-year-old lady whose hair caught fire while she was smoking. She arrived with a deep burn; I knew it would surely be deadly. As a remarkable coincidence there was a meeting for discussion going on at the time in medical ethics . The speaker asked me if I had any sort of ethical problem I could bring up for discussion. I described the case and asked the students their opinion. After the discussion, I made a remark that was, when looking back, a serious mistake. I said, "I'll take the word back to the nurses about her and we will talk about it some more before we decide." The instructor and the students were shocked: "You mean this is a real patient?" The teacher of ethics was not accustomed to being challenged by actuality. In any event, I went back and met with the nurses. A day or two later, when she was making no progress and was suffering terribly, we began to back off treatment. Soon she died quietly and not in pain. As a reasonable physician, you had better move ahead and do what you would want done for you. And don't discuss it with the world first. There is a lesson here for everybody. Assisting people to leave this life requires strong judgment and long experience to avoid its misuse. The first patient's husband and son wanted the doctor _ . | [
"to save her life",
"to end her life",
"use an artificial kidney",
"to maintain her life with machines"
] | null | B | |
mmlu_stem | mmlu_stem_10448 | When a rabbit sees something dangerous, it runs away. Its tail moves up and down as it runs. When other rabbits see this tail moving up and down, they run too. They know that there is danger. The rabbit has told them something without making a sound. It has given them a signal . Many other animals use this kind of language. When a bee has found some food, it goes back to its home. It cannot tell the other bees where the food is by speaking to them, but it does a little dance in the air. This tells the bees where the food is. Some animals say things by making sounds. A dog barks, for instance, when a stranger comes near. A cat purrs when pleased. Some birds make several different sounds, each with its own meaning. But human beings have something that no animal has ---a large number of words which have the meanings of things, actions, feelings or ideas. We are able to give each other information, to tell or inform other people what is in our mind or how we feel. By writing words down we can remind ourselves of the things that have happened, or send messages to people far away. No animals can do this. No animals have the wonderful power of language. No one knows how man learned to make words. Somehow he learned to make them. As centuries went by, he made more and more new words. This is what we mean by language. People living in different countries made different kinds of words. Today there are about fifteen hundred different languages in the world. A very large English dictionary, for example, _ four or five hundred thousand words. But we don not know all these. The words we know are called vocabulary. We should try to make our vocabulary larger. Read as many books as possible. When we meet a new word, look it up in the dictionary. A dictionary is the most useful book. A rabbit moves its tail up and down in order to _ . | [
"tell other rabbits where the food is",
"warn other rabbit of danger",
"make itself look strong",
"help itself to run fast"
] | null | B | |
mmlu_stem | mmlu_stem_2154 | Which causes the GREATEST change in a grassy field over time? | [
"The time of day",
"Amount of yearly rainfall",
"Number of birds nesting",
"Seasonal migration of animals"
] | null | B | |
mmlu_stem | mmlu_stem_3442 | If you see a person carelessly throw a cigarette to the ground, what are you likely to think? If you hate people throwing things on the ground, you might think, "That person shouldn't litter." If you are a smoker, you might think, "I would sure like a cigarette right now." Most likely, though, you are not thinking, "That unused cigarette butt could be used to make something amazing!" That is, unless you are a creative scientist. If you are, you may see potential--a possibility--where others simply see trash . That is just what has happened in South Korea. The spirit of invention can hit at the strangest times and in the most unusual places. In South Korea, it happened near a trash can. Kin Gil-Pyo is with the Seoul National University. He says he saw people throwing away cigarette butts, which got him thinking. He began wondering if something useful could be made from them. He and other researchers found a way to convert cigarette butts into materials required for high-performance batteries. Kim Gil-Pyo says they looked closely at used cigarette filters , the parts of cigarettes smokers put into their mouths. Filters are made of a material called "cellulose acetate ." Mr. Kim explains that cellulose acetate can be made into another material: carbon. The pieces of cellulose acetate, known as fibers, are changed through a one-step burning process. After this, they are turned into an energy storage material. But why use carbon? Carbon has many qualities that seem to make it the perfect material. Carbon has a high surface area. It conducts electricity well. It also stays stable, unlikely to change, for a long time. And carbon does not cost a lot. All these qualities make it the most popular material for making super-capacitors . Super-capacitors are good at storing energy. They have high-power mass, or density . They require only a short time for recharging. And they have a long lifecycle. Super-capacitors are used in products such as laptop computers and cell phones. They are also used in industrial energy converters, like wind turbine machines. Combining carbon and super-capacitors seems like a perfect marriage. Kim Gil-Pyo tells the Reuters News Agency that cigarette butts could affect the economy is a huge way. They could prove to be a low-cost source of carbon material. They are so cheap that smokers throw them to the ground. And you don't get much cheaper than that. Filters can be made into a material that _ . | [
"is used as the battery surface",
"can be turned into electricity",
"is very easy and costs nothing",
"can hold electricity energy well"
] | null | D | |
mmlu_stem | mmlu_stem_18935 | if the boiling point of water is attained, what ensues beyond this point? | [
"the water turns evaporates rapidly",
"the water then solidifies",
"the water becomes black",
"all of these"
] | null | A | |
mmlu_stem | mmlu_stem_8288 | In traditional Chinese medicine, the body, mind and spirit cannot be divided and so the unique whole-body treatment in Tui Na can also be a useful treatment correcting any imbalances in the body's energy before symptoms and disease can develop. It also works to bring back emotional peace as well as physical health. This is why after a Tui Na treatment many people "feel good". Many people in China use Tui Na regularly to keep healthy and to deal with some specific illnesses. Tui Na is performed on the clothed body and the patient is either lying on a couch or sitting on a chair. Therapists , by using a variety of movements, will control the intensity and direction of pressure in an exact way. The unique rolling movement in Tui Na is one of the most difficult movements to learn and students have to practice sometimes for many months on a rice bag before they are allowed to practice on the human body. Stress Tui Na is of course very useful for treating stress. It spreads the energy around the whole body. It is believed that Tui Na moves the strong energy in the tight muscles to the weaker areas, thus making a more balanced body. When your energy flowing inside your body is balanced, you feel relaxed and comfortable. Tui Na is especially useful for _ shoulders and tight neck muscles. Emotions In Traditional Chinese Medicine each major organ is linked to an emotion. By balancing the energy in the organ, the related emotion will be calmed. When your emotions are out of control, you would usually turn to your doctor or perhaps a psychotherapist . But perhaps some people would not like to be seeing a psychotherapist or feel nervous about discussing their problems with others. With Tui Na, one does not need to tell the therapist anything one does not want to. The treatment of Tui Na can deal with the problem itself. But if one does need to pour out his/her worries or troubles, an active dialogue between the psychotherapist and the patient will help to get a better effect. Organs & Emotions Each major organ -- the heart, the stomach, the liver , the lungs, and etc.--are linked to a relevant emotion. The heart is linked to joy, excitement and sadness. If the heart is out of balance, the patient may dream a lot at night and often forget something important in the day. The stomach is connected with too much thinking or worrying about anxiety. When the stomach is out of balance there is often a lack of energy. The patient often feels very tired and has no interest in doing anything at all. The liver is linked to anger. In Chinese medicine, the eyes are connected with the liver, and many people who suffer from anger often suffer from eye problems. The lung rules decision-making and too much energy here can lead to rashness , while if there is too little, it can bring about indecision. When there is a history of depression with a patient, it may have effect on the liver. ks5u Tui Na can help release most of the discomfort and it is used in almost all the hospitals in China and very popular among Chinese people. It is a useful and valuable method for the balance of your energy flowing, when emotional and physical health is out of balance. Tui Na is one of the remaining secrets of Chinese medicine. When the stomach is out of balance, _ . | [
"the patient will suffer from eye problems",
"the patient will have a lot to worry about",
"the patient will have nothing to do",
"the patient will not feel like doing anything"
] | null | D | |
mmlu_stem | mmlu_stem_13084 | Thirty years ago, Lake Ponkapog in Hartwell, New Jersey, was full of life. Many birds and animals lived beside the water, which was full of fish. Now there are few birds, animals, and fish. The lake water is polluted. It is in a colour of dirty brown, and it is filled with strange plants. How did this happen? First, we must think about how water gets into Lake Ponkapog. When it rains, water comes into the lake from all around. In the past, there were forests all round Lake Ponkapog, so the rainwater was clean. Now there are many homes around the lake. People often use the chemicals in their gardens. They use other chemicals inside their houses for cleaning and killing insects. There are also many businesses. Businesses use chemicals in their machines of shops. Other chemicals fall onto the ground from cars or trucks. When it rains, the rainwater picks up all the chemicals from home and businesses and then carries them into the lake . They pollute the water and kill the animals. Boats on the lake are also a problem. Lake Ponkapog is a popular place for motorboats . But oil and gas from boats often get into the lake. So more bad chemicals go into the water this way. People in Hartwell are worried . They love their lake and want to save it. Will it be possible? A clean lake must have clean rainwater going into it. Clean rainwater is possible only if people are more careful about chemicals at home and at other chemicals on the ground. And they mustn't use motorboats any more on the lake. All these may change people's lives. Only then can Lake Ponkapog be a beautiful, clean lake again. Cleaner rainwater will mean _ . | [
"more boats on the lake",
"more dirty things in the lake",
"a cleaner lake",
"a dirty lake"
] | null | C | |
mmlu_stem | mmlu_stem_17019 | Three kids have been learning chemistry for only a few months. But they have already begun to challenge a world famous scientist! Li Weichi, Huang Runling, and Xiao Yan are from Zhongshan Huaqiao Middle School in Guangdong. They have just found a red cabbage that could be a new kind of acid-base indicator . They want it to take the place of litmus paper. "We've learnt to think of and ask questions about life by ourselves," said Li, "We work well with each other." British scientist Robert Boyle discovered the use of litmus paper over 300 years ago. Now it is used widely in experiments all over the world. But when the kids did some experiments in class last winter, they saw that the litmus paper didn't turn very blue with base matter. It's hard to get a clear result. Will there be a better indicator than litmus paper? The three kids decided to try and find out! How? They went to collect over 40 plants in parks, gardens and markets. Then they ground leaves, flowers and stems to get the pigments from them. The kids mixed pigments with acid and base. They spent months watching carefully to see which paper showed the best colour change. They decided it was the litmus paper! "It's our first scientific journey, Huang said, "But it makes me want to try harder." Whom did the three kids want to challenge? | [
"Their chemistry teacher.",
"Their headmaster.",
"Robert Boyle",
"Thomas Edison"
] | null | C | |
mmlu_stem | mmlu_stem_15144 | At London College, the boys can go to the city in the afternoon. But they must return to the school before six. And Bob doesn't often obey the rule. One afternoon, Bob walked to the city and went to the cinema. When he got to the school, it was eight o'clock. He was a little worried. He ran quickly to the gate. It was closed. He went round the school building to another door. That one was closed, too. Then he saw an open window on the ground floor. It was the head teacher's office. Bob looked into the room, and no one was there. He quickly climbed up and jumped into the room. Just then he heard a voice. He looked around and hid under the sofa. One minute later, Mr. Scott, the head teacher, came in. He turned on the light and sat down on the sofa. Then he began to read. Bob lay under the sofa and looked at the head teacher's feet for an hour. He could not move. At last the head teacher stood up and walked towards the door. "Thank goodness, he didn't find me under the sofa." thought Bob. Then the head teacher stopped. He turned his head and spoke to the sofa, "Would you mind turning off the light when you leave?" he said and left the office. Bob went into the head teacher's _ . | [
"office",
"bedroom",
"dining room",
"living room"
] | null | A | |
mmlu_stem | mmlu_stem_12688 | Diving or Drowning A rich young man decided that he would like to do some diving in the sea, so he bought a rubber suit and all the other things that he needed, and took some lessons at a diving school. Then one day he walked into the water by himself and began to explore the bottom of the sea. He saw a lot of beautiful fish and other things, and then, after half an hour, he suddenly saw a man waving his arms and legs around wildly near the bottom of the sea. He was wearing only a bathing suit. The rich young man was very surprised to see him, so he took out a plastic notebook and a special pencil, which could write under water, and wrote, "What are you doing here?" He showed the notebook to the other man, who then took the pencil and wrote, "Drowning!" What was the man doing? | [
"swimming",
"diving",
"searching for fish",
"drowning"
] | null | D | |
mmlu_stem | mmlu_stem_286 | In clear weather, a bright light can be seen for a long distance. In conditions of heavy fog, the visibility is greatly reduced. Which of the following explains the reduced visibility? | [
"Light is refracted by water vapor in the air.",
"Light is scattered by water droplets in the air.",
"Light is absorbed by water vapor near the ground.",
"Light is reflected by water droplets on the ground."
] | null | B | |
mmlu_stem | mmlu_stem_21911 | Within a power station meant to process coal, electricity is | [
"reaped",
"broken",
"destroyed",
"devasted"
] | null | A | |
mmlu_stem | mmlu_stem_2247 | Beans and coal both have stored energy. Where did the energy come from that is stored in beans and coal? | [
"From the Earth's gravity",
"From the Sun's light",
"From the heat in the Earth's core",
"From the air's carbon dioxide"
] | null | B | |
mmlu_stem | mmlu_stem_3620 | Why Are Pig Farmers Still Using Growth-Promoting Drugs? It's one of the most controversial practices in agriculture: feeding small amounts of antibiotics to animals in order to make them grow faster. But what if the drugs don't even work very well? There's some good evidence that they don't, at least in pigs. They used to deliver a boost in growth, but that effect has disappeared in recent years or declined greatly. The reason for this is interesting and even paradoxical. Researchers think the antibiotics used to work by suppressing low-grade infections. In recent years, however, pork producers found other ways to accomplish the same thing through improved hygiene . As a result, the drugs have become largely superfluous -- yet many farmers still use them. To understand how this happened, you have to step back in time, says Steve Dritz, a specialist in pig nutrition at Kansas State University. Sixty years ago, when antibiotics were new, "people started treating animals, and feeding [the antibiotics], and finding that they had increased growth rates and feed efficiencies," he says. Nursery-age pigs, for instance, grew 12 to 15 percent faster with antibiotics. The animals also needed less feed to reach full weight. Other studies showed similar results in chickens and cattle. In the 1980s, a new set of studies found similar effects. So the growth-promoting effects of antibiotics became standard practice among meat producers. Fast forward to the 1990s. Dritz was starting his career as a scientist at Kansas State University, and pork production was changing dramatically. Previously, pigs were born and raised in one barn or in several barns close together. This meant infections could easily pass from one generation to the next, the way that kids share germs between their friends on the playground and their parents at home. Under the new system, when piglets are weaned, they move to a whole different place. That new site is carefully scrubbed and free of disease. Craig Rowles, who runs a large swine operation in Carroll, Iowa, shows me one such room. There's not a piglet in sight. "This room just got completely washed and disinfected, and now it's going to sit here and dry for a while," he says. A whole group of pigs will come in here together, and later they will move out together to yet another site. "That group of pigs will stay together until they go to market," Rowles says. The groups are kept strictly separated from each other. If workers move between the groups, they first have to change their boots. When farmers adopted multisite production, it cut down on disease -- and pigs actually grew faster. Pigs were more easily infected in the past because _ . | [
"they used antibiotics",
"they were always close together",
"they were raised on the playground",
"they moved from one farm to another"
] | null | B | |
mmlu_stem | mmlu_stem_1186 | Doctors have determined that each of these factors could cause heart disease in humans except | [
"genes that code for heart defects.",
"infections that damage the heart muscle.",
"other diseases that cause the heart to wear out.",
"intense exercise that increases the heart rate."
] | null | D | |
mmlu_stem | mmlu_stem_11490 | A growing number of college students are applying to take entry tests for medical and dental schools among increasing graduate unemployment in Korea. "I've decided to apply for the test to enter a medical college to become a doctor, changing from my original plan to prepare for a lawyer qualification exam in order to get a more stable job in the future," said a 24-year-old college graduate, Lee, who majored in business administration during his undergraduate schooling. The new medical and dental school system is getting popularity, attracting an increasing number of students every year since its appearance in 2004, as it is open to all college graduates regardless of their previous majors. The Education Development introduced the new medical and dental education system, in which college students with bachelor's degrees are allowed to study medicine or dentistry by taking the Medical Education Test (MET) and Dental Education Test (DET). Ten medical schools and six dental colleges that have used the new system have received 4,377 applications for the entrance exams. Applicants are getting younger compared with those in their 20s representing 76.9 percent of the total. The tests might be easier for students with biology and chemistry majors, but graduates from other majors are also applying for the tests. Under the existing medical and dental education system, students should take a two-year premedical course followed by a four-year medical course. Students graduating under the new medical or dental education system are given master's degrees, while those graduates who studied under the previous system have bachelor's degrees. We can learn from the passage that _ . | [
"it takes a longer time to get the master's degree in the old system",
"students may find it a lot easier to get a bachelor's degree in medicine",
"graduates from other majors like history are not allowed to apply for those schools",
"the new system are not so popular as expected because of its high unemploym... | null | A | |
mmlu_stem | mmlu_stem_16019 | DNA is the whole "map" of the human body. It is something that all human have, and it tells the body what to do. DNA is the reason that we look like our parents, because we get some of their DNA to make our own. People have been trying to understand the human body for a long time. In 1860, Mr. Mendel discovered why we look the same as other people in our family. It is because of small things called "genes" in our body. In 1953, two scientists, Watson and Crick, found out that those small parts are really messages. They're written in the DNA with a special language. In 1961, another two scientists found the first "word" that they could understand in that language. It shows how DNA tells the cell to build its parts. So far, scientists have found all the words in the DNA map, but we still do not understand what they all do. By understanding what just one "word" means, we can help to save people from several illnesses. So the more we understand, the more doctors will be able to do. Most people hope that this will help to make better medicine and help sick people. Other people worry that when we learn more "words" and and find out more information, we will use it in the wrong way, just to make people more attractive, or stop sick people getting jobs. How can we help sick people if we understand more "words" in the DNA map? | [
"Make better medicine.",
"Make they get jobs.",
"Make maps for them.",
"Make them attractive."
] | null | A | |
mmlu_stem | mmlu_stem_1136 | Clams, oysters, and mussels eat plankton filtered from water. How would clams, oysters, and mussels most likely be affected if the amount of plankton in a large body of water was significantly reduced? | [
"They would increase in number.",
"They would find a new food source.",
"They would become prey to other animals.",
"They would compete for a limited food source."
] | null | D | |
mmlu_stem | mmlu_stem_3481 | Different exercise types have different purposes and different benefits. One type of exercise may not accomplish all goals of being physically fit: a healthy heart, strong muscles and bones, and safety from injury. As a result, it is important to do enough types of exercise to have all the physical benefits. Here is a quick check sheet. Aerobic Exercise: To have a strong and healthy heart, you need to do aerobic exercise. This means that you need to exercise yourself enough so that your heart rate, while exercising, is 65 percent to 85 percent of your maximum heart rate. If you don't get your heart rate up within this level--you just aren't working hard enough. Whatever you do, your heart rate needs to be 65 percent to 85 percent of your MHR for 20 to 30 minutes, at least 3 times a week. Typical types include: * Running * Walking (at least 4 to 4.5 mph) * Swimming * Bikingk3s5u * Elliptical Training * Yoga Strength Training: To keep your muscles and bones strong, you need to do strength training. This comes in a variety of forms. Whatever you do, however, you need to train your muscles enough so that they are really tired by the end of each _ . To see real benefits, make sure you are strength training 2 to 3 times a week for about 30 to 40 minutes. Typical types of strength training include: * Weight Training * Yoga * Resistance Training * Plyometrics Flexibility Training: To keep your body flexible, reducing risk of injuries and pain in your joints and muscles, you need to do flexibility training. You should always aim to stretch every muscle after any exercise routine. Typical types of flexibility training include: * Stretching * Yoga * Pilates So next time you think that yoga 5 times a week will be enough, think about what it is really doing. Is it getting your heart rate up? Are you making up your strength? Are you keeping your muscles flexible? If your purpose is to _ , you can choose swimming as your exercise form. | [
"build a strong and healthy heart",
"keep muscles and bones strong",
"keep body flexible",
"reduce risk of injuries and pain in joints and muscles"
] | null | A | |
mmlu_stem | mmlu_stem_22332 | Which Disney character was a herbivore? | [
"Pluto",
"Cheshire Cat",
"Bambi",
"Simba"
] | null | C | |
mmlu_stem | mmlu_stem_20978 | During photosynthesis, plants produce sugar that may help with their what? | [
"Babies",
"Love Handles",
"Belly",
"sustenance"
] | null | D | |
mmlu_stem | mmlu_stem_1979 | Which of the following processes is responsible for changing liquid water into water vapor? | [
"photosynthesis",
"condensation",
"evaporation",
"precipitation"
] | null | C | |
mmlu_stem | mmlu_stem_14160 | Birds live in the trees. Squirrels live in the trees. But do you know that some frogs live in the trees, too? The tree frog is hard to find. It can change colors. On green leaves, it stays green. On a brown branch ,it turns brown. Some tree frogs can change from green to gold or blue. Tree frogs have legs and wide feet. They have sticky pads at the end of their toes. These sticky toe pads keep the tree frogs from falling off the trees. Tree frogs have different colors and markings on their skins. Their eyes are different, too. Some have green eyes, and others have bright red ones. The sounds they make are different, too. One frog makes a sound like a dog barking .Another frog makes a loud noise like a snore .There is even a frog that whistles ! Which of the following sentences is RIGHT? | [
"The tree frogs have different colors and markings on their skins.",
"The tree frogs can't make a loud noise like a snore.",
"We can easily tell tree leaves from tree frogs.",
"We still can't find tree frogs if we hear a sound like a snore in the forest."
] | null | A | |
mmlu_stem | mmlu_stem_13626 | A science book gives facts. Some science books tell us about animals. Some tell us about plants. Some tell us about outer space. This page tells us about animals. Do you know that not only the fish but also some animals live in the sea? For example, the whale is not a fish. It can't breathe in the water. It swims in the water. But it comes up for air. The blue whale is the world's biggest animal. There are other sea animals, too. One is called the dolphin. Dolphins need air to live. They breathe air, as whales do. Dolphins are very clever. They sometimes seem to speak to each other. Many other animals live near the sea. Seals and otters love the sea. They swim and play there. They eat fish and sea plants. Seals and otters have thick fur. The fur keeps them warm. What food do seals and otters like eating? | [
"Meat.",
"Fruits.",
"Both fish and sea plants.",
"Leaves."
] | null | C | |
mmlu_stem | mmlu_stem_9362 | Orcas, or killer whales, are the largest of the dolphins and one of the world's most powerful animals feeding on meat. They feast on marine mammals such as seals, sea lions, and even whales, employing teeth that can be four inches (ten centimeters) long. They are known to grab seals right off the ice. They also eat fish, squid , and seabirds. Though they often frequent cold, coastal waters, orcas can be found from the polar regions to the Equator . Killer whales hunt in deadly groups, family groups of up to 40 individuals. There appear to be both permanent and temporary group populations of killer whales. These different groups may hunt different animals and use different techniques to catch them. Permanent groups tend to prefer fish, while temporary groups target marine mammals. All groups use effective, cooperative hunting techniques that some are similar to the behavior of wolf packs. Whales make a wide variety of communicative sounds, and each group has various noises that its members will recognize even at a distance. They use echolocation to communicate and hunt, making sounds that travel underwater until they meet objects, then reflect back, showing their location, size, and shape. Killer whales are protective of their young, and other adolescent females often assist the mother in caring for them. Mothers give birth every three to ten years, after a 17-month pregnancy. Killer whales are immediately recognizable by their special black-and-white coloring and are the intelligent, trainable stars of many aquarium shows. Killer whales have never been widely hunted by humans. Killer Whale are often seen in some aquarium shows because _ . | [
"they are able to be trained",
"they have special body colors",
"they must be protected",
"they have never been hunted"
] | null | A | |
mmlu_stem | mmlu_stem_7016 | If your cellphone suddenly stops working, don't blame the service provider.The malfunction might well have been caused by something bigger -- a solar storm.Experts expect that Earth will see more solar activity in the near future.The malfunction of electronic devices will just one of the effects. Sunspots serve as an indicator of the sun's activity.For the past two years, sunspots have mostly been missing.Their absence, the most prolonged in nearly 100 years, has taken even seasoned sun watchers by surprise. When the number of sunspots drops at the end of each 11-year cycle, solar storms die down and all become much calmer. This "solar minimum" doesn't last long. Within a year, sunspots and solar storms begin to build toward a new crescendo, the next solar maximum. What's special about this latest cycle is that the sun is having trouble starting the next solar cycle. The sun began to calm down in late 2007, so no one expected many sunspots in 2008. They should return in 2010. Scientists have predicted that the next solar cycle could be the most active on record: more sunspots and more solar storms. However, sunspots are mostly missing now. Since the earth is in close contact with the sun, strong solar activities can bring trouble to our life. People of the 21st century rely on high-tech systems for the basics of daily life. Air travel and radio communications can be affected by strong solar activities. A big solar storm could cause 20 times more economic damage than Hurricane Katrina. What the sun will do next is beyond our ability to predict. Most astronomers think that the solar cycle will go on but at low level. However, there is also evidence that the sun is losing its ability to produce sunspots. By 2015, they could be gone altogether. We can infer that in the past two years_. | [
"solar activities have brought much trouble to our life",
"the number of sunspots has increased to a large extent",
"the solar minimum took the place of the solar maximum",
"our cellphones have seldom been interrupted by the solar storm"
] | null | D | |
mmlu_stem | mmlu_stem_13690 | Skin-diving is a new sport today. This sport take you into a wonderful new world. It is like a visit to the moon! When you are under water, it is easy for you to climb big rocks, because you are on longer heavy. Here, under water, everything is blue and green. During the day, there is plenty of light. When fish swims nearby, you can catch them with your hands. When you have tanks of air on your back, you can stay in deep water for a long time. But you must be careful when you dive in deep water. To catch fish is one of the most interesting parts of this sport. Besides, there are more uses for Skin-diving. You can clean ships without taking them out of the water. You can get many things from the deep sea. Now you can see that Skin-diving is both useful and interesting. This sport _ . | [
"is like to travel on the moon",
"is like to play in water",
"is like to visit a new country",
"is like to climb a big rock"
] | null | A | |
mmlu_stem | mmlu_stem_10898 | People who breathe infected air from a TB patient can become infected with the tuberculosis bacteria . However, most people with active tuberculosis do not expel (,)very many TB bacteria. So, the spread of the disease usually does not happen unless a person spends a large amount of time with a TB patient. Those most at risk are family members, friends and people who live or work closely with a patient. Tuberculosis can attack any part of the body. However, the lungs are the most common targets of the bacteria. People with the disease show several signs. They may expel air from the lungs suddenly with an explosive noise. This kind of cough continues for a long period of time. People with a more severe case of tuberculosis also may cough up blood. People with the disease often have high body temperatures. They suffer what are called night sweats, during which their bodies release large amounts of water through the skin. TB victims also are tired all the time. They are not interested in eating. So their bodies lose weight. One thing that is especially dangerous about TB is that people with moderate signs of the disease may not know they have had it. They may spread the disease to others without even knowing it. So, it is very important for people to get tested for tuberculosis. Family members are those most at risk to be infected with the tuberculosis bacteria, _ . | [
"because they have the same bath room",
"because they have blood relationship",
"because they love each other very much",
"because they live in the same room"
] | null | D | |
mmlu_stem | mmlu_stem_6143 | When people want to know about the weather, they usually go to there radios, TVs, newspapers, or to the Internet. However, you can also find many weather signs among wildlife, because of their highly developed senses. Drops in air pressure produce an effect on small animals in many ways. Mice and deer are good weather indicators. People who spend a lot of time outdoors have observed that, before a storm, field mice come out of their holes and run around, Deer leave high ground and come down from the mountains. Birds are especially good weather indicators because they also show the effect of a pressure drop in many ways. For example, some birds become irritable and quarrelsome and will fight over a piece of bread. Other birds chirp and sing just before a storm. It seems they know they won't get another chance for an hour or two. Birds also seek safe places before a storm, You will sometimes see birds settling in trees or gathering together on a wire close to a building. Pre-storm low pressure makes the are so thin that birds have difficulty flying. It is unusual to see many birds flying overhead in the summertime, rather than during the periods in the spring or autumn. Watch for other weather signs if you see this. If they fly in the wrong direction, they may be flying ahead of a storm. By paying closer attention to some important signs in nature, we can become better prepared for any kind of weather. The best title for the text would be _ . | [
"Signs of a Storm",
"Drops in Air Pressure",
"Animals'Sharp Senses",
"Nature's Weather Signs"
] | null | D | |
mmlu_stem | mmlu_stem_4020 | Suppose we built a robot to explore the planet Mars. We provide the robot with seeing detectors to keep it away from danger. It is powered entirely by the sun. Should we program the robot to be equally active at all times? No, the robot would be using up energy at a time when it was not receiving any. So we would probably program it to stop its activity at night and to wake up at dawn the next morning. According to evolutionary theory of sleep, evolution equipped us with a regular pattern of sleeping and waking for the same reason. The theory does not deny that sleep provides some important restorative functions. It merely says that evolution has programmed us to perform those functions at a time when activity would be inefficient and possibly dangerous. However, sleep protects us only from the sort of trouble we might walk into; it does not protect us from trouble that comes looking for us. So we sleep well when we are in a familiar, safe place, but we sleep lightly, if at all, when we fear that bears will nose into the tent. The evolutionary theory explain the differences in sleep among creatures. Why do cats, for instance, sleep so much, while horses sleep so little? Surely cats do not need five times as much repair and restoration as horses do. But cats can afford to have long periods of inactivity because they spend little time eating and are unlikely to be attacked while they sleep. Horses must spend almost all their waking hours eating, because what they eat is very low in energy value. Moreover, they cannot afford to sleep too long or too deeply, because their survival depends on their ability to run away from attackers. The author uses the example of the robot in space exploration to tell us _ . | [
"the differences between robots and men",
"the reason why men need to sleep",
"about the need for robots to save power",
"about the danger of men working at night"
] | null | B | |
mmlu_stem | mmlu_stem_8111 | To discover whether bees can see colors, the following experiment is set up. A table is put in a garden and on the table is a piece of blue cardboard with a drop of syrup on it. After a short time, bees come to the syrup. The bees then fly to their hive and give the syrup to other bees in the hive. Then they return to the feeding-place which they have discovered. After a while, the blue cardboard with the syrup on it is taken away. Instead of this card, a blue card is now put on the left side of the first feeding-place and a red card to its right. These new card have no syrup on them. Thus, the blue card is on the left, the red card on the right, and there is nothing where the first blue feeding-card used to be. Very soon bees arrive again, and fly straight to the blue card. None to the red card. To do the experiment, altogether how many cards do you need to prepare? | [
"Two, one blue and one red.",
"Three, two blue and one red.",
"Three, one blue and two red.",
"Four, two blue and two red."
] | null | B | |
mmlu_stem | mmlu_stem_19166 | Inanimate things may be pollinators such as | [
"bees",
"birds",
"wind",
"deer"
] | null | C | |
mmlu_stem | mmlu_stem_16123 | Skin--diving ( ) is a new sport today . This sport can take you to a wonderful world . It's like to visit the moon . When you're under the water, it's easy for you to climb big rocks ( ) because you're not heavy. Here, under the water , everything is blue and green . During the day , there's enough light . And you can see a lot of fish swimming around you. You can catch them with your hands. To catch fish is of the most interesting parts of this sport . When you have tanks ( ) of air on your back , you can stay in deep water for a long time . But you must be careful when you dive in deep water . You can climb big rocks easily under the water because _ . | [
"you're strong enough",
"you're tall enough",
"you're not heavier than on land",
"you're healthy enough"
] | null | C | |
mmlu_stem | mmlu_stem_6617 | Can you remember a morning when you've woken up to the ring of your alarm clock and wished you could stay in bed? You haven't slept well, your hair is a mess. Worse, you can't stop yawning. Yawning is universal to humans and many animals. Cats, dogs and fish yawn just like humans do! Yawning is an involuntary(,) action during which you open your mouth and breathe deeply. The average duration of a yawn is about 6 seconds. The purpose and cause of yawning are still a mystery. Scientists are not sure what causes a yawn. People yawn when they are tired or bored, but they also yawn when they aren't. There are many ideas explaining why we yawn. One idea is that yawning is a way for the body to become more alert by taking in more oxygen. A yawn increases the heart rate, forces carbon dioxide out of the lungs and blood stream, and brings oxygen to the brain. But one study showed that volunteers given a lot of oxygen did not yawn any less than before, while those given a lot of carbon dioxide did not yawn more. Another idea is that early humans used yawning as a form of communication. If one decided it was time to sleep, they would tell the others by yawning and they would do it in return to show they agreed. A third explanation comes from psychology professor Gordon Gallup of University at Albany in New York. He said that as people yawn, they cool off their brains. "Brains are like computers." he said. "They only operate efficiently and effectively when they're cool. Many things connected to yawning, like being tired, make the brain hot, and yawning can reduce the heat." Scientists have sent people into space, and created terrible nuclear weapons, but there are lots of seemingly simple things, such as why we yawn, or hiccup , that they can't figure out. Next time you are in class in the morning, let out a big yawn and watch to see how many of your classmates yawn in response! What can we learn from the passage? | [
"The real reason why humans and most animals yawn.",
"Hiccups are an involuntary human action similar to yawns.",
"The more an action can be studied, the easier it is to research.",
"Finding out why humans yawn should be easier than sending people into space."
] | null | B | |
mmlu_stem | mmlu_stem_4732 | The octopus's reputation as a human-killer isn't simply an exaggeration --it is a total myth. The octopus can indeed be a deadly hunter, but only of its natural victims. Some shellfish and an occasional sick or incautious fish have reason to be frightened of this multi-armed hunter, but a person is much too large to interest even the biggest octopus. Even the largest among octopi is much smaller than most people imagine. Far from being large enough to swallow a ship, as monster octopi in movies have been known to do, the largest octopus, found on the Pacific coast, weighs around 110 pounds and grows to no more than ten feet in width. The hard, parrot-like beak of an octopus is not used for attacking deep-sea divers, but for cutting open shellfish. Indeed, the octopus possesses such a tiny throat that it cannot swallow large pieces of meat. Instead, it feeds by pouring digestive juices into its victims, and then sucking up the soupy remains. A shellfish that finds itself in the grasp of an octopus has only a short time to live. But human beings are perfectly safe. Still, people rarely care to go close enough to these _ to get a good look at them. It is implied but not stated in the passage that _ . | [
"people have unreasonable fears about the octopus",
"the octopus is not interested in human beings",
"the octopus is afraid of human beings",
"the octopus is a very cruel sea animal"
] | null | A | |
mmlu_stem | mmlu_stem_14973 | Live Music----Late Night Jazz Enjoy real American jazz from Herbie Davis, the famous trumpet player. He is known to play well in the early hours. So don't want to get much sleep. PLACE: The Jazz Club DATES: 15-23, June PRICE: Y=200-250 TIME: 10 p.m. till late TEL: 4668736 Scottish Dancing Scottish dancing is nice and easy to learn. The wonderful dance from England will be given. PLACE: Jack Stein's DATES: 10-20, May PRICE: Y=180 TIME: 7--10 p.m. TEL: 4021877 Shows -Anhui Museum There are 12,000 pieces on shows here. You can see the whole Chinese history. PLACE: Anhui Museum DATES: 1Mar--30 Jun PRICE: Y=60 (Y=30 for students) TEL: 4888688 TIME: Monday-Friday 9 a.m. -5 p.m. Weekends 9 a.m.--9 p.m. The history teacher, Mr. Li and his four students want to go to the museum. How much will they pay? | [
"Y=150",
"Y=300",
"Y=180",
"Y=160"
] | null | C | |
mmlu_stem | mmlu_stem_18745 | A chef uses a metal spoon to stir noodles cooking in a pan. After five minutes, she notices that the thermal energy from the pan has made the spoon | [
"cold.",
"hot.",
"wet.",
"dry."
] | null | B | |
mmlu_stem | mmlu_stem_7773 | Psychology has a new application in the field of medicine. Many doctors, together with their patients, are looking for alternative methods of treatment of physical problems. In large hospitals, modern therapy seems to focus on the physical disease. Patients may feel they are treated like broken machines. Some doctors have recognized this as a problem. They are now using psychological therapy, in which the patient is working with the doctors against the disease with the help of medicine. The patient does not wait for the medicine and treatment to cure him or her, but instead the patient joins in the fight. The doctor knows that a disease affects a patient's body physically. The body of the patient changes because of the disease. He is not only physically affected, but also has an emotional response to the disease. Because his mind is affected, his attitude and behavior change. The medical treatment might cure the patient's physical problems, but the patient's mind must fight the emotional ones. For example, the studies of one doctor, Carl Simonton, M. D., have shown that a typical cancer patient has predictable attitudes. She typically feels depressed, upset, and angry. Her constant depression makes her acts unfriendly toward her family, friends, doctors, and nurses. Such attitudes and behaviors prevent recovery. Therefore, a doctor's treatment must help the patient change that. Simonton's method emphasizes treatment of the "whole" patient. The attitude of a cancer patient receiving radiation therapy, an X-ray treatment, can become more positive. The physician who is following Simonton's psychological treatment plan suggests that the patient imagine that he or she can see the tumor in the body. In the mental picture, the patient "sees" a powerful beam of radiation like a million bullets of energy. The patient imagines the beam hitting the tumor cells and causing them to shrink. For another cancer patient, Dr. Simonton asks him to imagine the medicine going from the stomach into the bloodstream and to the cancer cells. The patient imagines that the medicine is like an army fighting the diseased cells and sees the cancer cells gradually dying and his blood carry away the dead cells. Both the medical therapy and the patient's positive attitude fight the disease. Doctors are not certain why this mental therapy works. However, this use of psychology does help some patients because their attitudes about themselves change. They become more confident because they use the power within their own minds to help stop the disease. Another application of using the mind to help cure disease is the use of suggestion therapy. At first, the doctor helps the patient to concentrate deeply. The patient thinks only about one thing. He becomes so unaware of other things around him that he is asleep, or rather in a trance . Then the physician makes "a suggestion" to the patient about the medical problem. The patient's mind responds to the suggestion even after the patient is no longer in the trance. In this way, the patient uses his mind to help his body respond to treatment. Doctors have learned that this use of psychology is helpful for both adults and children. For example, physicians have used suggestion to help adults deal with the strong pain of some disease. Furthermore, sometimes the adult patient worries about her illness so much that the anxiety keeps her from getting well. The right suggestions may help the patient to stop being anxious. Such treatment may help the patient with a chronic diseases. Asthma is an example of a chronic disorder. Asthma is a disease that causes the patient to have difficulty in breathing. The patient starts to cough and sometimes has to fight to get the air that he or she needs. Psychology can help relieve the symptoms of this disorder. After suggestion therapy, the asthma patient breathes more easily. Physicians have learned that the psychological method is very useful in treating children. Children respond quickly to the treatment because they are fascinated by it. For example, Dr. Basil R. Collison has worked with 121 asthmatic children in Sydney, Australia, and had good results. Twenty-five of the children had Excellent results. They were able to breathe more easily, and they did not need medication. Another forty-three were also helped. The symptoms of the asthma occurred less frequently, and when they did, they were not as strong. Most of the children also felt better about themselves. Doctors have also used suggestion to change habits like nail-biting, thumb-sucking, and sleep-related problems. Many professional medical groups have accepted the medical use of psychology and that psychology has important applications in medicine. What can we learn from the studies of Carl Simonton, M. D.? | [
"The medical treatment can cure the patient's mental disease.",
"The treatment of a patient by treating the body and the mind is necessary.",
"The mental treatment is more important than medical treatment.",
"Few patients have emotional response to the disease."
] | null | B | |
mmlu_stem | mmlu_stem_12866 | Nearly half of elementary and high schools in the US use the Presidential Fitness Test. It checks kids' fitness levels. Students are tested at least twice a year. In 1956, US President Eisenhower created the test, and it has been a tradition in schools since 1966. There are five activities in the test: sit-ups , push-ups , sit and reach, endurance run or walk and shuttle run . Students who get scores at or above 85 percent on all the activities can get a Presidential Physical Fitness Award. The test encourages students to live a healthy and active life. Students taking the test are really testing their limits, according to the US National Association for Sport and Physical Education. China has a similar test: the physical education(PE) test. Beginning at the age of 7, students in China are tested twice a year to check if they are healthy and strong. They also finish activities like the endurance run, sit-ups and the shuttle run. However, unlike students in the US who get awards, Chinese students get points in PE tests. The highest score is 100. For junior school students, the PE test is more important because it is worth 30 to 40 points in the entrance exam for senior high school. In order to get a good score, most students begin to prepare for the test in their junior one year. Who can get a Presidential Physical Fitness Award? | [
"Students who finish all the activities.",
"Students who finish first on the test.",
"Students who make the greatest progress in the test.",
"Students who get scores of 85 percent or above on all the activities."
] | null | D | |
mmlu_stem | mmlu_stem_9439 | Babies who are slow to gain weight in the first months of their lives generally catch up to their peers by age 13,a large UK study shows, Researchers said the results would make parents whose babies fail to put on weight quickly less worried. The researchers looked at data from ,11,499 children who took part in a large study, It showed that 507 who were slow to gain weight in the first eight weeks of life recovered fairly quickly and had almost caught up by age 2. Another group of 480 who were slow to gain between eight weeks and nine months continued to put on weight slowly until they were seven years ,but then had a sudden increase and caught up by age 13, The different pattems of recovery between the two groups were likely due to different reasons for slow weight gain ,the researchers said, All the children were still lighter and shorter than their peers by the time they were teenagers ,but within the normal range. The findings highlight the importance of monitoring a baby's weight and height gain during the first few weeks and months ,but not creating anxiety with parents of slow-growing babies, said the study leader Prof Alan Emond from the University of Bristol. "In the past, a lot of parents have been caused unnecessary anxiety by heaith professionals and this is a positive and _ message."He said in many cases of slow growth where children do not follow the standard'curve' it is just because they are following their genetic potential. Dr Simon Newell, vice-president of the Royal College of Paediatrics and Child Health, said he broadly agreed with the concluslons of the researchers but stressed that poor weight gain was something that needed to be monitored closely, "I would encourage parents to use growth charts but if measurements show your baby is smaller than averager it may be completely normal, "he said. What can we know from the findings of the research? | [
"All the cases of slow weight gain in the first months of the babies' lives are caused by the same reason",
"Slow-growing babies will have the same height and weight with their peers by age13",
"Many cases of children whose growth don't meet the growing standard curve cannot be treated as abnormal",
"The find... | null | C | |
mmlu_stem | mmlu_stem_12370 | Schools and parents in Shenzhen City have been asked to take better care of children's eyesight as 45 percent of them were found to be shortsighted. Too much reading, poor lighting and too much TV are blamed . Of the city's high school graduates who applied to study at colleges this summer, but now he gets up earlier. The purpose of this passage is to _ . | [
"criticize children who are shortsighted.",
"blame parents and schools for children's being shortsighted.",
"ask the high school graduates to pay attention to their eyesight.",
"draw people's special attention to eye hygiene ."
] | null | D | |
mmlu_stem | mmlu_stem_17446 | A student conducts an investigation. In order to make a valid conclusion, she must | [
"have a testable hypothesis.",
"place the data in a graph.",
"use the best technology.",
"test multiple variables."
] | null | A | |
mmlu_stem | mmlu_stem_15042 | Billy Dengler, a 14-year-old boy, is in the eighth grade. A month after he was born, Billy's mother, Terri, noticed that his eyes weren't quite as big as a normal baby's. She took Billy to the hospital, and the doctor said Billy would never be able to see. Although Billy can't see, he has never let that hold him back or make him different. Billy began teaching himself computer programming by using a screen reader when he was just seven years old. He is a certified Google developer now. Google even tried to offer him a job last year when he discovered a problem in one of its _ , but Billy wasn't old enough. Billy's dream school would be Stanford University or MIT, where he could get a very good education in computer science. After he leaves school, whether he will go to work at a company like Google or design a software company of his own is still to be decided. However, he says he will definitely do something great. "It's a sighted world," Billy said. "You can't let anything get in the way of your dreams, and if you do that, you can't move forward and make your dreams come true." What will Billy do after school? | [
"He will work for Google.",
"He will open a company.",
"He has not decided on that.",
"He will do nothing."
] | null | C | |
mmlu_stem | mmlu_stem_17375 | What is the highest temperature that water can reach in a pot on a stove? | [
"50°C",
"90°C",
"100°C",
"212°C"
] | null | C | |
mmlu_stem | mmlu_stem_3692 | Donald was not very good at maths. He could not understand the teacher's explanations. Even when the teacher explained something a second time, Donald still could not understand it. "Never mind," Donald told himself. "I'm quite good at other subjects. I'll cheat in the maths exam, then I won't be in trouble." "I will sit next to the boy who's best at maths," he thought, "and copy down his answers." The day of the exam came, and Donald sat next to Brian Smith, who always was at the top of the class in maths. Donald carefully copied Brian's answers onto his own exam paper. At the end of the exam, the teacher collected the papers and graded them. Then she said, "Well, boys and girls. I've decided to give a prize to the student who got the highest grade. However, it's difficult for me to decide who to give the prize to, because two students, Doanld and Brian, got the same grade." "Let them share it," one of the other students said. "I have thought about that," the teacher said, "but I have decided to give the prize to Brian." Donald was angry when he heard this. He stood up and said. "That is not fair. I got the same grade as Brian." "That is true," the teacher said. "However, Brian's answer to Question 18 was 'I don't know,' while yours was 'Neither do I.'" Donald got a high grade in maths because _ | [
"maths was his best subject",
"the questions were easy",
"he copied from another boy",
"the teacher explained the questions carefully"
] | null | C | |
mmlu_stem | mmlu_stem_4562 | Plant cloning has been an agricultural technique used by farmers and gardeners for centuries. Grafting is a common form of plant cloning. Many plants in nature actually clone themselves and reproduce asexually. Cloned plants are much more predictable than normal plants, so their yield is more reliable. Cloned plants also reproduce faster, limiting the amount of time between planting and harvesting. It is also often cheaper to produce seeds through cloning than through traditional methods. Plants can essentially be optimized so that farmers or individual growers always have the best seeds available. With more yield at a faster rate, farms can produce more food for more people while decreasing overall costs. Cloning can be used to wipe out diseases that previously killed off entire fields of crops. This would make plants immune to the kinds of diseases that farmers and gardeners around the world fear each year. Crop failures due to disease and virus could become a thing of the past. Also, plants that are near extinction can be brought back to life through cloning. Through cloning scientists can develop "super" fruits and vegetables of superior nutritional quality. This could make for a healthier population overall. This is already being done through selective pollination , and genetic cloning could take it to the next level. By plant cloning we have a population of identical plants and all these plants equally suffer from the same diseases, but in nature the weak would die and the strong would survive. While there are some dangers to consider with plant cloning, there are plenty of benefits that could prove vital to the propagation of the human species. What is the main purpose of the text? | [
"To warn the negative effects of plant cloning.",
"To present different kinds of plant cloning.",
"To predict the future of plant cloning.",
"To inform us about the advantages of plant cloning."
] | null | D | |
mmlu_stem | mmlu_stem_2359 | The year is 2094. It has been announced that a comet is heading towards the earth. Most of it will miss our planet, but two pieces will probably hit the southern half of the earth. On 17 July, a piece of 4 kilometers wide comet enters the Earth's atmosphere with a massive explosion . About half of the piece is destroyed, but the remaining part hits the South Atlantic at 200 times the speed of sound. The sea boils and a huge hole is made in the seabed. Huge waves are created and spread outwards form the hole. The wall of water, a kilometer high, rushes towards southern Africa at 800 kilometers an hour. Cities on the African coast are totally destroyed and millions of people are drowned . Before the waves reach South America, the second piece of the comet lands in Argentina. Earthquakes and volcanoes ash set off in the Andes Mountains. The shock waves move north into California and all around the Pacific Ocean. The cities of Los Angeles, San Francisco and Tokyo are completely destroyed by earthquakes. Millions of people in the southern half of the earth are already dead, but the north won't escape for long. Because of the explosions, the sun is hidden by clouds of dust, temperatures around the world fall to almost zero. Crops are ruined. The sun won't be seen again for many years. Wars break out as countries fight for food. A year later, no more than 10 million people remain alive. Could it really happen? In fact, it has already happened more than once in the history of the earth. The dinosaurs were on the Earth for over 160 million years. Then 65 million years ago they suddenly disappeared. Many scientists believe that the Earth was hit by a piece of object in space. The dinosaurs couldn't live through the cold climate that followed and they died out. Will we meet the same end? When the first piece hits the South Atlantic, it causes _ . | [
"an earthquake",
"hunger",
"an Earth explosion",
"huge waves"
] | null | D | |
mmlu_stem | mmlu_stem_8554 | Hey there, So you're about to spend four years of your life and tens of dollars of your parents' money, and all you really know about college is that all of your friends are going. Do you ever stop to wonder why you're going? *Relax. You're making the right decision. First of all, you'll discover what interests you by taking courses in many subjects. For example, it's hard to decide if you want to be a painter if you've never painted any pictures; once you're in a drawing-room on campus, you'll know one way or the other. College is also a lot of fun--after you graduate, you'll be working every weekday for 50 or so years. And remember that college graduate earn about twice the income of those who never attended college. *Finding the right college can be difficult. Fortunately, Johnson Review is here to help you every step of the way. *Researching Schools. To us, the most important decision you'll make is to choose the school that really fits you best -- not the one that is the most competitive or has the best-equipped rooms. *Applying to School. On JohnsonReview.com., you'll find hundreds of actual college applications and links to many more. *Raising Your Scores. American College Test is one of the most important parts of the admission course. It's not the most important, though, and everyone needs to prepare for the best. But, if you can do better, find the right course for better scores. *Paying for School. Most families need financial aid for the high cost of college. The problem is that financial aid seems difficult to get and many families get caught up in the price of college rather than learning the ways to get financial aid. If you really do your research, you'll learn that you can afford to attend any college, no matter the cost. For more information, call 600-3681 or visit JohnsonReview.com.Wherever you go, have a nice trip! Johnson Smith Founder and CEO Johnson Review How many reasons for going to college does the author mention in the text? | [
"2",
"4",
"3",
"5"
] | null | C | |
mmlu_stem | mmlu_stem_4775 | For better eyesight, doctors advise limiting the hours of screen time and encourage having enough eye resting time. However, another study shows that sitting in front of computer or TV screens for long hours is not the only reason formyopia . An Australian research team studied young children in Sydney and Singapore to find the reasons for myopia. The research team found that theprevalence of myopia among children in Sydney was lower than children in Singapore, even though they spent more time in front of computer and TV screens. The major finding is that children in Sydney spend longer hours on outdoor activities than those in Singapore. Indoor and outdoor sports activities both make the eyes focus on more distant objects, which prevents the eyes from changing shape. But outdoor activities may better help avoid myopia than indoor sports activities. Jane Gwiazda, who does research in sight problems, says: "Natural light is good for eye growth. And extra vitamin D from the sun might contribute to eye growth." Many doctors suggest that every child get its first eye test done when he/she is about two and half years old, and even if his/her sight seems perfect. It is necessary for myopic children to wear glasses to prevent headaches, trouble reading or injuries. It is also important that schools invite doctors to test their students' eyes. If that is not possible, school teachers should at least encourage parents and children to have regular eye examinations and wear glasses. And parents should remember not only to limit the total screen time for their children, but also to encourage them to spend time outdoors. Which of the following statements is TRUE ? | [
"Children should have eye tests as soon as they reach school age.",
"Doing outdoor activities with no glasses is good for myopia children.",
"Focusing on distant objects can help the eyes keep their original shape.",
"Children should limit their time in the sun in order to protect their eyes."
] | null | C | |
mmlu_stem | mmlu_stem_4754 | Shower Radio --- Warranty and Directions Introduction Congratulations! You are now the owner of a So Fine Shower Radio! It is sure to provide entertainment for many hours. In addition, the radio features a timer for those days when you are in a hurry. Before using the radio, please read all directions, fill out and mail in the warranty card, and put warranty information in a safe place. Although we do not expect problems with the radio, you may need to refer to the warranty information at a later time. Warranty This radio is warranted for a one-year period that begins on the date of purchase. If it fails to work because of a problem of materials, please return it to the following address: So Fine Radio Corp, 1279 Delta Way, Monga. We will not pay shipping costs for returning the radio to us. We will either repair or replace the radio. Please allow at least four weeks for looking at the problem and repairing the radio. If you have not heard from us within six weeks, call our customer service department at 1-800-123. Radios that are returned to us for problems other than a problem of materials will be subject to service fee as well as the cost of the repairs. Customers will be informed of the charge by postcard. Radios will not be returned to customers until these fees are paid. Directions Please read all directions before using it. Please note that this radio is designed and built to operate well in a damp environment. The self-contained batteries and circuits are contained in the enclosed space that will bear heat and humidity. To Operate the Radio 1. Put two AA batteries in the enclosed space at the back of the radio. Be certain to follow the diagram, or the batteries will not provide electricity. The radio should NOT be adapted in order to be fixed into the wall; this will damage the waterproofing . 2. Turn the POWER dial in a clockwise direction until it clicks. Continue turning the dial until the desired volume is achieved. 3. To find the desired station, press the station selector button. The tuner will automatically go to the next highest signal. The station's call number will be visible in the digital screen. When the station with the highest frequency has been reached, the selector will start again at the lowest frequency. 4. To switch between AM and FM stations, move the sliding AM/FM switch. To Operate the Timer 1. Press the Timer Set button. Each time the button is pressed, five minutes will be put on the timer. The amount of time on the timer will be visible for five seconds on the digital screen. 2. When the time on the timer doesn't work, a beep will sound for ten seconds. The timer may be reset again one minute. Troubleshooting Before returning the radio for service, please check the following items: Problem: Radio cannot be heard. 1. Check batteries to be certain that they still have power and are put in correctly. 2. Check Power/Volume Control. Problem: Timer does not work. 1. Check batteries to be certain that they still have power and are put in correctly. 2. Follow directions above for setting timer. 3. Turn the power control on. The timer will not work when the radio is not on. 4. Adjust the volume control which regulates the volume of the beep as well as the radio volume. Which of the following is covered within this text? | [
"How to operate the radio and the timer.",
"What other owners say about the radio.",
"Who will benefit from using the radio.",
"Where to purchase the radio."
] | null | A | |
mmlu_stem | mmlu_stem_17027 | Tomorrow is Saturday. I'm not going to work, and my brother isn't going to school. We are going to play table tennis. We are going to have lunch in a restaurant. We're coming home at five. My parents are going to visit my grandparents. They are going to get home at half past five. We are going to help my mother cook the dinner. After supper, I am going to dance with my friends, and my brother is going to watch TV with my parents. My brother is a_. | [
"student",
"teacher",
"worker",
"manager"
] | null | A | |
mmlu_stem | mmlu_stem_1589 | All the animals were having a picnic. Turtle brought hotdogs for everyone. All the animals came to make their hotdogs. Rabbit put ketchup on his hotdog. Duck put mustard on his hotdog. Bear put ketchup and mustard on his hotdog. Turtle and Fox did not put ketchup or mustard on their hotdog. Goose looked at the hotdogs. He did not like hotdogs at all. He was very hungry. He looked around for something else to eat. Duck had brought chips, but Goose did not like chips. Bear had brought salad, but Goose did not like salad. Fox had brought apples, but Goose did not like apples. Rabbit brought carrots, but Goose did not like carrots. Goose looked around for something that he liked. Then he saw something near the edge of the meadow. It was a bunch of red strawberries. Goose liked strawberries very much. He took a basket and gathered up as many strawberries as he could and brought them to the picnic. Everyone was happy, and Goose was not hungry any more. Who likes mustard on their hotdog? | [
"Fox and Turtle",
"Rabbit and Goose",
"Goose and Fox",
"Duck and Bear"
] | null | D | |
mmlu_stem | mmlu_stem_9819 | Dolphins are interesting animals and researchers find them interesting to watch. They don't have hands, but can use tools to solve problems, just like us. Scientists have observed a dolphin trying to get a shy eel to come out of its hole by poking it with a dead fish. Many species of dolphin live in large societies. They have many different relationships and need a good communication system; they use a variety of sounds to communicate with each other. There is currently no evidence that dolphins have a language of their own. But scientists still have a lot to find out about these animals and so there are certain to be a few surprises in the future. At Kewalo Basin Marine Laboratory in Hawaii, the dolphin team have developed a sign langue to communicate with the dolphins, and the results are amazing. Not only do the dolphins understand the meaning of individual words, they also understand the significance of word order in a sentence. For example, when they were asked to 'touch the ball with your tail and then jump over it' they generally responded correctly and straight away, which showed that they understood the langue. Most mammals seem to enjoy play--but dolphins seems to like making their games as challenging as possible. On a beautiful day in 1997, researchers working at a beach, off the southern coast of Brazil, observed a little dog going into the sea and swimming towards the dolphins. To their surprise, the dolphins approached the dog and then started throwing it into the air. The dog seemed to enjoy the 'game' and continued playing with the dolphins for more than an hour. From then on, different dogs were seem trying to interact with the dolphins. Dolphins live in a very different world to ourselves, but they are very good at our 'intelligence tests'. For example, they will jump out of the water when they hear a whistle noise. They do this because they will get a fish as a reward. There is still much to learn about these flexible problem-solvers, but from the evidence so far, it would seem as though dolphins are very intelligent. Dolphins will jump out of the water when they hear a whistle noise in order to _ . | [
"watch people",
"breathe fresh air",
"enjoy themselves",
"get some food"
] | null | D | |
mmlu_stem | mmlu_stem_11512 | Hero Carl West is an unassuming all-American 24 year old . You might think that because he works in a convenience store that he's not the brightest guy you're likely to meet. Yet this slightly scruffy young man in his Nike sneakers , was smart enough to break a fake story that successfully fooled the world for 35 years . "I guess I just got lucky," West smiles. " It just goes to show you don't have to finish high school to be smart." Forty Years' Study "I've spent 40 years in astronomical study, and 20 years of that specifically in Satellite Systems study. I have a University chair in three major Universities and sat on 5 different governmental committees on Space Exploration. Hell, I wrote a research paper on the Lunar Landings that took 18 months to research, then a further 3 months just to correct it." Steven pauses to scratch his head. "Yet not once did it occur to me to wonder who filmed Armstrong as he stepped onto the moon. How could I have been so stupid? " The Evidence * If Armstrong was the first to walk on the moon, then who filmed him walking down the ladder? * There's no gravity on the moon, so why didn't the astronauts just float away? * It's really hot on the moon, so Armstrong should have died of thirst. * The deadly radiation belts around the Earth turn everyone radioactive and make your eyes boil unless you are wearing 18 inches of lead . So how did they get through it? The writer thinks that Carl West _ . | [
"has fooled the world",
"wasn't smart when he was in high school",
"is a scientist researching the moon",
"has discovered a big secret []"
] | null | D | |
mmlu_stem | mmlu_stem_20962 | If a beach is below a farm it can make swimmers ill if | [
"people go to the movies",
"field fluid drips down",
"humans enjoy eating meat",
"some cattle eat cheese"
] | null | B | |
mmlu_stem | mmlu_stem_13130 | Daniel Olin was 11 years old when his parents moved to Canada. He liked his new school and made friends there, but then things at home started to change. His mum and dad began to argue and the arguments got worse and worse until one day, Daniel's mum left. With his father working long hours, Daniel felt very lonely and very unhappy. He wanted to escape, to run away. And that's what he did. Very early one terribly cold morning when the snow was deep on the ground, he packed a bag with some clothes, some chocolate and a map of Canada and set off to a forest. He ran and ran until he could hardly breathe. His feet were heavy with the snow but he still walked on through deep snow, not even watching where he was going. Then, disaster struck. A rock hidden by the deep snow caught his feet and Daniel fell to the ground. He had broken the bone. He was very cold and was starting to feel tired, but he knew that if he fell asleep in the snow, he would certainly die from the cold. A tree shook ahead. From within the branches , a pair of yellow eyes watched Daniel. The puma had been following him. A puma is a large wild cat with claws that could tear Daniel into pieces. But instead of moving in for the kill, the puma walked up to Daniel and lay across his chest, arms and legs. Daniel was too frightened to move, but soon the warmth of the animal reached Daniel and he began to feel better. From time to time, the puma pressed his muzzle against Daniel and rocked his head gently. Clearly, the puma knew that Daniel must not fall asleep. This animal should have been a real danger to Daniel and yet the boy began to feel safe. They remained like that for several hours until Daniel and the puma heard voices. The rescue team had found them. Where was the puma when Daniel first saw it? | [
"In the tree.",
"On the top of a rock.",
"Behind the rock.",
"Before a cave."
] | null | A | |
mmlu_stem | mmlu_stem_12149 | A small man went to a cinema, bought a ticket and went in. But after two or three minutes he came out, bought a second ticket and went in again. After a few minutes, he came out again and bought a third ticket. Two or three minutes after that, he came out a third time and asked for another ticket. But the girl said to him, "Why are you buying all these tickets? Are you waiting for friends in the cinema all the time?" "No, I am not doing that," answered the small man. "But a big woman always stops me at the door and tears my ticket up." The girl smiled and sold him another ticket. The small man bought _ tickets in all. | [
"five",
"three",
"four",
"six"
] | null | C | |
mmlu_stem | mmlu_stem_649 | Most electrical wires are covered with plastic or rubber. The wires are covered with plastic or rubber because those materials | [
"are conductors of electricity",
"make complete electric circuits",
"are not conductors of electricity",
"make the electricity move quickly"
] | null | C | |
mmlu_stem | mmlu_stem_11414 | If you've ever seen the way dog people interacted with their pets, it comes as no surprise that there's some germ-exchanging going on there. A new study indicates that dog ownership specifically may be one of the biggest single contributors to what kinds of microbes live on your skin. A team of researchers led by Se Jin Song at the University of Colorado, Boulder, took swabs of the tongues, palms, forehead and feces of members of 60 family households. Some of the families had children or household pets and some did not; dogs were the only pets swabbed. Researchers then analyzed the DNA of the bacteria they found to determine how diverse the bacteria populations were. Not surprisingly, family members who lived together had more bacteria in common than members of separate households. Bacteria on the skin were especially similar within households, probably because we pass microbes through the air, through direct contact, and via the surfaces we touch. The most surprising finding, however, was the large bacteria contribution Fidonad made. The skin bacteria of dog owners from different households was almost as similar as if they'd cohabited without a dog. Put another way, you and a friend across town who both own dogs share a skin ecosystem as alike as a married couple does. The reason for this appears to be that dogs harbor some kinds of bacteria that are rare on human skin. One in particular, a family of bacteria called Methylophilaceae, was abundant in the mouths of dogs sampled as well as the skin of their owners--indicating "a common occurrence of oral-skin transfer between dogs and their owners," according to the results published in the journal eLife. From the study, we know that _ | [
"some kinds of bacteria live on our skin because of dog ownership.",
"nobody finds it surprising that there should be some germ-exchanging between dogs and their owners.",
"only dog ownership contributes to the sort of microbes that live on our skin.",
"there would most probably be no microbe on our skin if i... | null | A | |
mmlu_stem | mmlu_stem_4641 | If you were to walk up to Arthur Bonner and say, "Hey, Butterfly Man," his face would break into a smile. The title suits him.,and he loves it. Arthur Bonner works with the Palos Verdes blue butterfly, once thought to have died out. Today the butterfly is coming back -- thanks to him. But years ago if you'd told him this was what he'd be doing someday, he would have laughed, "You're crazy." As a boy, he used to be "a little tough guy on the streets". At age thirteen, he was caught by police stealing. At eighteen, he landed in prison for shooting a man. "I knew it had worried my mom," Bonner said after he got out of prison. "So I told myself I would not put my mom through that pain again." One day he met Professor Mattoni, who was working to rebuild the habitat for an endangered butterfly called El Segundo blue. "I saw the sign 'Butterfly Habitat' and asked, 'How can you have a habitat when the butterflies can just fly away?'" Bonner recalls. "Dr. Mattoni laughed and handed me a magnifying glass , 'Look at the leaves.' I could see all these caterpillars on the plant. Dr Mattoni explained, 'Without the plant, there are no butterflies.'" Weeks later, Bonner received a call from Dr. Mattoni, who told him there was a butterfly that needed help. That was how he met the Palos Verdes blue. Since then he's been working for four years to help bring the butterfly back. He grows astragalus, the only plant the butterfly eats. He collects butterflies and brings them into a lab to lay eggs. Then he puts new butterflies into the habitat. The butterfly's population, once almost zero, is now up to 900. For their work, Bonner and Dr. Mattoni received lots of awards. But for Bonner, he earned something more: he turned his life around. For six years now Bonner has kept his promise to stay out of prison. While he's bringing back the Palos Verdes blue, the butterfly has helped bring him back, too. From the last sentence of the text, we learn that raising butterflies has _ . | [
"made Bonner famous",
"changed Bonner's life",
"brought Bonner wealth",
"enriched Bonner's knowledge"
] | null | B |
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