dataset string | id string | question string | choices list | rationale string | answer string | subject string |
|---|---|---|---|---|---|---|
mmlu_stem | mmlu_stem_16523 | Donny, an 11 year-old boy, is playing with a ball. The ball goes into the street, and Donny runs for the ball. A car hits Donny. An ambulance takes Donny to the hospital. The doctors at the hospital tell Donny's parents, " _ ". Every day Donny's parents visit him at the hospital. They sit next to Donny's bed and talk to him. But Donny never talks to them. He just sleeps. One day Donny's father says, "Wake up, Donny. Wake up and come home. Come home and play with Rusty. " When Donny's father says "Rusty", Donny moves his arm. "Rusty! " Donny's father says again. Again, Donny moves his arm. Donny's parents have an idea. They tell the nurses, "We want to bring Rusty to the hospital". The nurse says "OK". The next day, Donny's parents bring Rusty to the hospital. When they put her on Donny's bed, Donny opens his eyes and hugs her. Donny's parents bring Rusty to the hospital every day. One day, Rusty jumps on Donny's bed and scratches Donny's arm. Donny says his first words: "Bad dog!" After seven weeks, Donny is well. He leaves the hospital and goes home. _ wakes up Donny at last. | [
"A doctor",
"His father",
"A nurse",
"Donny's dog"
] | null | D | |
mmlu_stem | mmlu_stem_16843 | Why is 2004 a special year? Because it is a Leap Year . What's so special about that? Well, we have a Leap Year every four years. And it has 366 days, not the usual 365. In a Leap Year, we have 29 days in February, while in a usual year we have only 28 days. Why do we have a Leap Year? We have a Leap Year so we can keep the calendar in step with the seasons. The calendar is a kind of clock for the year. But how long is a year? A calendar year is 365 days. But a true year is 365 days, 5 hours, 48 minutes and 46 seconds long. That's the time it takes the earth to go around the sun. So every four years we have one more day, and we put it at the end of February, the shortest month of a year. Then we have a Leap Year. It takes the earth _ to go around the sun. | [
"a day",
"a year",
"a little longer",
"than 365 days"
] | null | C | |
mmlu_stem | mmlu_stem_10159 | In the near future, we may be using our eyes to operate our smartphones and tablets, even when it comes to playing popular games like Fruit Ninja. The GazeGroup has been developing eye-controlled computer technology for nearly 20 years. But those devices have been mainly designed to aid those with disabilities, and are very expensive. "After a while, we figured out that probably the best way is to go for a mass-market approach," says Gaze's Sune Alstrup Johansen, "where everybody would have this available." Johansen and some of his colleagues have formed a new company, The Eye Tribe, which is hoping to develop the technology on a mass commercial level. The technology works by sending an infrared light from the computing device toward the user's face. After measuring the user's eye movements, the technology is then able to easily know where a person's eyes are moving, allowing the eyes to control a cursor . A software can determine the location of the eyes and tell where the user is looking on the screen. It even knows which image he is looking at. There has been a gradual change toward hands-free technology in recent years, particularly in the gaming world. Following Nintendo's popular Wii system, Xbox released the Kinect device, which lets users control their Xbox and play certain games using only their hands, legs and voices. Since most smartphones and other mobile devices can't come standard with an infrared device, Johansen said a replaceable filter would be an inexpensive, convenient choice for most consumers. And even as companies like The Eye Tribe work to create a commercially practical product for the average user, making the eye-controlled technology more accessible and less expensive will have similar benefits for disabled users. "Then I can go to any computer, and then I can control it and I can use it, instead of just bringing my own," said Stig Langvad, who heads up Denmark's umbrella organization for people with disabilities. "So I'll be a part of society on an equal foot, instead of being a special solution." We can learn from the passage that _ . | [
"the Kinect device was released earlier than Nintendo's Wii system",
"cheap eye-controlled devices completely changed the gaming world many years ago",
"the development of eye-controlled computer technology began a very long time ago",
"with no help of special devices, a large number of people are now using t... | null | C | |
mmlu_stem | mmlu_stem_20204 | An inherited characteristic from my dad is | [
"the cat",
"a building",
"moles",
"the bike"
] | null | C | |
mmlu_stem | mmlu_stem_5293 | Plastic is everywhere because plastic is an extremely useful material. It is cheap, strong and lightweight. What's more, it can take on nearly any form or shape, from soft and stretchy to hard and glasslike. Plastic, however, is far from perfect. It may even be bad for us. Studies now suggest that poisonous chemicals can get out of some types of plastic, get into our bodies, and cause a variety of health problems, including cancer, birth defects and attention deficit hyperactivity disorder . Two types of chemicals in particular have raised special concern lately. They are called phthalates and Bisphenol-A , BPA for short. Not all plastic products contain them. But the ones that do are surrounded by controversy . That's because experts disagree on how dangerous these chemicals are. Plastic is a single word, but plastic isn't just one thing. What all plastics share in common are plasticizers -- special chemicals that allow the material to be changed into nearly any shape or texture. Plasticizers are added to plastic during the manufacturing process. Phthalates and BPA are two types of plasticizers that work in different ways. Phthalates add softness to things like shampoo bottles, raincoats and rubber. They are also used in perfumes and makeup. BPA, on the other hand, gives a hard, clear, almost glasslike feel to products such as infant bottles. BPA also appears in food and soda cans, DVDs and other unexpected places. How do these chemicals get into us? When plastic is heated in the microwave or dishwasher, chewed on or scratched, the chemicals can seep out of the plastic. Even though we can't see them, we eat them, drink them and breathe them in. Scientists and parents are especially worried about young children, who tend to chew on everything, including plastic. Dozens of countries, including the European Union, Japan, Canada and Mexico have already banned phthalates from products made for children younger than three. California and Washington have done the same. And a number of other states are considering similar rules. As for BPA, Canada became the first country to ban the chemical from baby bottles. A dozen states are considering it. Which of the following products contains BPA? | [
"A soft plastic cup.",
"A pencil eraser.",
"A baby milk bottle.",
"A new perfume."
] | null | C | |
mmlu_stem | mmlu_stem_20759 | A wet globe that is enormous in mass is likely to have a stone | [
"layer",
"sun",
"brain",
"labyrinth"
] | null | A | |
mmlu_stem | mmlu_stem_17322 | If a scientist wants the medical community to revise old information and use new research findings in the treatment of a disease, it would be best to present the information | [
"at a school science fair.",
"in a newspaper article.",
"at a physicians' conference.",
"in a television commercial."
] | null | C | |
mmlu_stem | mmlu_stem_21009 | This keeps animals warm but it is possible to have too much | [
"comfort",
"body fat",
"shelter",
"protection"
] | null | B | |
mmlu_stem | mmlu_stem_6255 | Have you ever been bitten? Of course you have. You are surrounded by living things which might, or do, bite. Even when you rest your head on your pillow, bedbugs are probably nibbling away at you. They live happily inside most pillows. Take a walk outside and you are a target for "man's best friend. " Hundreds of dog-bite victims visit US emergency rooms daily. Many bites are terrible. To avoid the dogs in your neighborhood, you might want to hike into the desert or the woods. There, you run the risk of bites from rattlesnakes, scorpions, and blood-sucking ticks. Not to mention bears, wolves, coyotes, and mountain lions. Speaking of housing, watch out when you touch the corner of your house or garage. Shy but deadly, the black widow spider and the brown recluse spider make themselves comfortable in quiet areas of your closets or garage. One bite from either of them can make you very sick; occasionally, people die from such bites. Unfortunately, many people fear all spiders, not just the few dangerous ones. They squash them or run from them at first sight, not realizing that most spiders are actually beneficial to man. If you're concerned about bites, don't forget about rabid animal bites. Any warm-blooded animal can get infected with rabies. Although humans in the US rarely get attacked by rabid animals, the disease is painful and dangerous. You will most likely die if you are not treated properly within 48 hours of being bitten. How does the author introduce the topic of this passage? | [
"By asking questions.",
"By giving examples.",
"By offering suggestions.",
"By doing experiments."
] | null | A | |
mmlu_stem | mmlu_stem_9702 | Along the seashore ,the tall coconut trees waved in he wind. The sand was white in the bright sun, and the ocean was dark blue. The houses in the town near the shore, were painted white. The boats had been pulled up on the shore. Usually they would all be in the water with hard-working fishermen. But today was a holiday, and everyone was preparing for the celebration that was going to take place that evening. In the distance, men could be seen climbing the coconut trees. They were singing as they worked. There were monkeys in the trees, too. The monkeys were jumping up and down and screaming angrily.The climbers just laughed at the monkeys and continued to pick the fruits. The monkeys were angry because _ . | [
"the men were trying to catch them",
"the men wanted to drive them away",
"the men got the coconuts , which were their food",
"the men climbed higher and faster than they did"
] | null | C | |
mmlu_stem | mmlu_stem_20495 | Which of the following would be considered a predator? | [
"grizzly bear",
"moose",
"salmon",
"lobster"
] | null | A | |
mmlu_stem | mmlu_stem_876 | What is a benefit of the regulation of gene expression? | [
"conservation of genetic information",
"conservation of cell resources",
"trait adaptation to environmental change",
"trait inheritance in offspring"
] | null | B | |
mmlu_stem | mmlu_stem_18401 | If a chemical reaction such as photosynthesis begins with 6 atoms of carbon [C], how many atoms of carbon [C] should be in the products? | [
"12 atoms of carbon [C]",
"6 atoms of carbon [C]",
"3 atoms of carbon [C]",
"2 atoms of carbon [C]"
] | null | B | |
mmlu_stem | mmlu_stem_109 | Which of the following is an example of a physical change? | [
"lighting a match",
"breaking a glass",
"burning of gasoline",
"rusting of iron"
] | null | B | |
mmlu_stem | mmlu_stem_15836 | One of Anna's friends has chickenpox . Two days later, Katie has chickenpox. Anna's mother says: " Your best friend has chickenpox . We have to keep an eye on you." The next evening, Anna finds some red spots on her face. The next morning, she stays home from school. She can't go to her grandpa's birthday party. She can't go to her soccer practice. She can't go to the supermarket with her mother.Anna cries : " I don't like chickenpox. I miss school. I miss my friends." Then Anna's mother has an idea. After lunch, Katie, Mike and Danny come to Anna's home--- all with spots like her. Anna's mother says : " Let's have a chickenpox party!" All the afternoon, the kids play games. When Anna's friends have to go home, "See you at school." Katie says. "Having chickenpox is not so bad." says Danny. "I know," Anna says with a laugh , " Can we all have chickenpox again next week?" kids have chickenpox from the passage ? | [
"Two",
"Three",
"Four",
"Five"
] | null | C | |
mmlu_stem | mmlu_stem_2445 | Sleepwalking is a sleep disorder. Your child will rise from bed and walk or engage in other activities that they would normally do when they are awake. Their eyes will be open but they will appear to be in a dream-like state, and will probably not answer when you talk to them, although they may carry out conversations. Sleepwalking can last a few seconds , a few minutes, or more. Sleepwalking can be an indication that certain parts of the brain may not be relaxing properly at bedtime. It can be caused by illness or fever, tiredness, stress or anxiety. It is thought to occur in the beginning, slow-wave stages of non-rapid eye movement sleep before dream sleep. It may be related to the lack of magnesium , and it is very possible that hormonal changes in body could cause it. Certainly a child is more likely to be a sleepwalker if one of his parents suffered, too . Sleepwalking itself is not dangerous and is generally not a sign of any more worrying problems. But if your child sleepwalks regularly, you have to take safety measures to make sure that he doesn't hurt himself while sleepwalking. Makes sure that any doors can't be opened by a child, and lock doors to the cellar, kitchen and other dangerous places. Check each night before lights go out for sharp objects or, indeed , anything on the floor which your child could trip over or hurt himself on. A child may sleepwalk once and never sleepwalk again. Others may sleepwalk once a month or so. Still others may sleepwalk almost nightly. If you are worried you should consult your doctor. It can be inferred from the passage that _ . | [
"sleepwalking may be passed down in a family",
"drugs that could cure sleepwalking have been developed",
"during a normal sleep, a person never opens his eyes",
"most doctors consider sleepwalking as a serious problem"
] | null | A | |
mmlu_stem | mmlu_stem_21400 | The skeletal system protects the | [
"ears",
"stomach",
"nose",
"thighs"
] | null | B | |
mmlu_stem | mmlu_stem_1743 | There was a beautiful butterfly that was flying around in a park. It was the only one in there. It was pink. It was very pretty. A small boy saw it and wanted to put it in his pocket. He had a naughty look on his face. First he walked slowly to where the butterfly was. The butterfly had been sitting by a flower. When it saw the boy nearby, it started to fly away. The boy quickly started to chase it. He laughed as he ran. It was a game for him. The butterfly was scared. It flew very fast and very high in the air. The boy jumped up. The butterfly would not stay still. He jumped as far up as he could. He tried many, many times but he could not reach the butterfly. The butterfly flew away. The boy could not catch the butterfly. He left the park with a sad look on his face. He wanted to cry but did not. What did the butterfly do when it got scared? | [
"It bit the boy.",
"It stayed still.",
"It called the other butterflies over.",
"It flew very fast and very high in the air."
] | null | D | |
mmlu_stem | mmlu_stem_9039 | The marine environment is fascinating to study and work in due to its beauty, richness, and complexity. It covers three quarters of the surface of the Earth, yet we know more detail about the surface of Mars. In the past, it was seen as both an inexhaustible resource and a bottomless sink for our wastes. Yet the increasing pressures of overpopulation, pollution and the threat to our natural environment mean that there is an increasing need for scientists who can understand how it all works, how it affects us, and how we are affecting it from global warming through to the smallest plankton. From local issues to global concerns, we now know that the marine environment is inextricably linked to our lives, and to our future survival. It is an area where much remains to be discovered, and where only a multidisciplinary approach can cover the breadth of issues to be confronted. This is the approach taken on our Marine Environmental Science degree course. This course takes a multi-disciplinary approach to explore and understand the marine environment. After an initial grounding in basic science, optional choices are available in specialist topics such as marine ecosystems and pollution, coastal navigation and oceanography, among others. Our new harbor side marine laboratory is used for some of the specialist lectures, laboratory and project work, while a week's residential field course in the Isle of Man provides training to prepare for the research project conducted in your final year. There is an optional trip to Belize in the final year to study tropical marine environments. The present environment of the Earth forces the experts and scholars to study _ . | [
"the relationship between people's actions and natural environment",
"the relationship between people's actions and pollution",
"the relationship between people's actions and overpopulation",
"the relationship between people's actions and plankton"
] | null | A | |
mmlu_stem | mmlu_stem_17729 | A student is measuring the distance a car travels down a ramp using yards. Which measurement is most similar in length when using the metric system of measurement? | [
"centimeter",
"kilometer",
"millimeter",
"meter"
] | null | D | |
mmlu_stem | mmlu_stem_4767 | Stephen Hawking was born on January 8, 1942. He is known for his contributions to the fields of cosmology and quantum gravity , especially in the context of black holes. He experienced extreme difficulties and obstacles in his life, which only made him stronger. Finally he contributed much to the careers he devoted to and became one of the most famous scientists in the world. Hawking was outstanding in his school life. After a successful period of education at St. Albans School, the entrance of Oxford opened to him. In March 1959, at the age of 17, Hawking took the scholarship examination with the aim of studying natural sciences at Oxford. Then Hawking went to Cambridge to do research in cosmology. When Stephen Hawking was dreaming about his future, he faced extreme difficulties and obstacles. Symptoms of disorder first appeared while he was enrolled at Cambridge; he lost his balance and fell down a flight of stairs, hitting his head. The diagnosis of motor neuron disease came when Hawking was 21, shortly before his first marriage, and doctors said he would not survive more than two or three years. Hawking gradually lost the use of his arms, legs, and voice, and is now almost completely paralyzed . Despite his disease, he describes himself as "lucky" --- not only has time to make influential discoveries, but also has, in his own words, "a very attractive family". As someone has said, when we meet frustration, someone fights, someone cries, someone escapes, someone tries. Hawking succeeds because he tries. Which of the following statements is NOT true? | [
"Hawking is famous in the fields of cosmology and quantum gravity.",
"Hawking was diagnosed to have the motor neuron disease. k*s5u",
"Hawking started to suffer symptoms of disorder when he was in Oxford.",
"Hawking gradually lost the use of his arms, legs and voice."
] | null | C | |
mmlu_stem | mmlu_stem_20685 | A small dish that is in space will do this as it nears an enormous mass. | [
"be blown up",
"be yanked in",
"be pushed away",
"be evaporated"
] | null | B | |
mmlu_stem | mmlu_stem_19270 | If a deer is unable to eat regularly, or only eats that which lacks essential minerals, the deer may | [
"find healthy food",
"experience failing health",
"fail to gestate",
"prepare to mate"
] | null | B | |
mmlu_stem | mmlu_stem_22073 | What has more mass than the moon? | [
"your home planet",
"Skylab",
"the Atlantic ocean",
"pluto"
] | null | A | |
mmlu_stem | mmlu_stem_16215 | Hello, everyone, I'm Xing Fei. I'm from China. My family name is Xing. I live in Bei Jing. My family is very large. In my family, my grandfather's father is the oldest one. He is now ninety-nine years old. My grandfather is eighty years old. And my grandma is eighty-two years old. They have four children, my uncle, my father, and my two aunts. I'm their grandson. My parents have two children, my sister and me. And I have four cousins. Now, I'm a student in No. 10 Middle school. And my sister is only five years old. My parents are both teachers. They love my family very much. So they work hard. We go to the park every morning. My mother says that it can help us keep healthy. How old is his sister? | [
"80",
"82",
"99",
"5"
] | null | D | |
mmlu_stem | mmlu_stem_706 | When it rains, some animals will ___. | [
"hibernate for the season",
"migrate to warmer climates",
"change their body covering",
"move to seek shelter"
] | null | D | |
mmlu_stem | mmlu_stem_1899 | The change from day to night on Earth can be explained by | [
"the movement of the Sun.",
"the rotation of Earth.",
"the movement of the Moon.",
"the tilt of Earth."
] | null | B | |
mmlu_stem | mmlu_stem_13421 | This story is about a young man.He worked very hard at his lessons.He was too busy to have a rest.At last, he became ill, so he couldn't go to sleep.Every night, when he went to bed, he closed his eyes and tried to sleep.But the more he tried, the more he stayed awake. After a while he decided to visit the doctor."I just can't go to sleep at night.What should I do?" "I have a suggestion," said the doctor."Try counting numbers.By the time you reach one thousand, you'll be asleep.I'm sure of it." The next day the man returned to the doctor's office."Well," said the doctor, "how are you today? Did you try my suggestion?" The man still looked tired."Yes," he said, "I tried counting one, two, three...up to one thousand.But when I reached five hundred and sixty-nine, I began to feel sleepy.I had to get up and drink some tea so that I could go on counting up to one thousand.But then I still couldn't fall asleep." The doctor asked the young man _ . | [
"to count numbers before he went to bed",
"to put all numbers from 1 to 1,000 together",
"to count numbers while he was lying in bed",
"to take some medicine and go to bed earlier"
] | null | C | |
mmlu_stem | mmlu_stem_6472 | WASHINGTON--A baby born with the virus that causes AIDS appears to have been cured, scientists announced Sunday, describing the case of a child from Mississippi who's now 2.5 and has been off medication for about a year with no signs of infection. There's no evidence that shows that the child will remain healthy, although complex testing uncovered just traces of the virus' genetic material still lingering . If so, it would mark only the world' s second reported cure. Specialists say Sunday's announcement, at a major AIDS meeting in Atlanta, offers promising clues for efforts to remove HIV infection in children, especially in African countries where too many babies are born with the virus. "You could call this about as close to a cure," Dr. Anthony Fauci of the National Institutes of Health, who is familiar with the findings, told The Associated Press. A doctor gave this baby faster and stronger treatment than usual, starting a three-drug mixture within 30 hours of birth. That was before tests confirmed the infant was infected and not just at risk from a mother whose HIV wasn't diagnosed until she was in labor . "I just felt like this baby was at higher-than-normal risk, and deserved our best shot," Dr. Hannah Gay, a pediatric HIV specialist at the University of Mississippi, said in an interview. That fast action apparently knocked out HIV in the baby's blood before it could form hideouts in the body. Those so-called reservoirs of dormant cells usually rapidly reinfect anyone who stops medication, said Dr. Deborah Persaud of Johns Hopkins Children's Center. Next, Persaud's team is planning a study to try to prove that, with more aggressive treatment of other high-risk babies. "Maybe we'll be able to block this reservoir seeding." Persaud said. No one should stop anti-AIDS drugs as a result of this case, Fauci warned. What can we learn from the passage? | [
"The baby was cured of its HIV before birth.",
"The baby was infected with HIV after birth.",
"The baby was infected with HIV from its mother.",
"The virus causing AIDS was completely removed from the baby."
] | null | C | |
mmlu_stem | mmlu_stem_2156 | Which of these is most likely harmful to an ecosystem? | [
"Building new homes in a wetland",
"Taking away airplanes from an airport",
"Planting trees in an orchard",
"Adding floors to an office building"
] | null | A | |
mmlu_stem | mmlu_stem_13559 | Jane Scott is fourteen and the year before last she began to study in a middle school. She likes dancing and singing and spends a lot of time on them. But she hates math and does not work hard at it. She thinks it difficult to learn. She falls behind her classmates and once failed the math exam. She decides to drop it. Her father is angry with her when he knows about it. It was Sunday. Mr Scott gave a call to his sister, who teaches math in another school. He hoped she would come and tell his daughter how to learn math. The woman came quickly and said. "You're a clever girl, Jane. I'm sure you'll soon do well in math if you work hard at it." "I'm afraid I can't, Aunt," said Jane, "Girls can't be good at math." "I don't think so," said the woman. "I was good at it when was a girl. You must do more exercises and practice a math problem again and again until you master it. Remember: Practice makes perfect. Well, it's a math problem. Think about it and practice it again, and you'll work it out." "OK," said the girl, "Let me try." About an hour later, Jane took the exercise book to her aunt and said, "I've done the problem ten times." "Well done!" her aunt said happily, "What result did you get?" "Ten answers." Jane has difficulty in learning _ . | [
"dancing",
"math",
"singing",
"English"
] | null | B | |
mmlu_stem | mmlu_stem_4227 | Hi, I'm your tooth. I've been asked to represent the rest of your teeth. We need your help. We like to be clean when you show us off with your big, wide smiles. First, let me tell you a little about us. You weren't born with the baby teeth, they developed when you were about six or seven months old. You went from milk to real food in no time thanks to your twenty primary teeth. Eventually, they loosened and fell out, one at a time, probably about the time you were six or seven years old. Then we came into your life. We are your permanent teeth, all twenty-eight of us. Some people may even have thirty-two depending on those wisdom teeth in the back. Sometimes they are able to help, and sometimes they cause trouble. Many times wisdom teeth are sideways and have to be pulled. Some people don't even have them at all! On a more personal note, I am an incisor, and you have seven more just like me, here in the front of your mouth. We do the biting on those chocolate chip cookies you like so much. Next to us are the canines, four sharp teeth, two on either side. Their job is to tear food; pizza is a good one for them. Behind them are eight premolars and eight to twelve molars, depending on those wisdom teeth. The molars do the majority of the work chewing the food that you eat. They do a great job on those carrots you like so much! Did you know we not only help you bite and chew but also help you talk? That's right. Try to say "tooth" without letting your tongue touch the back of your teeth. It sounds pretty funny, doesn't it? Why are the wisdom teeth pulled sometimes? | [
"Because they are useless.",
"Because they are in the back.",
"Because they are ugly.",
"Because they grow in wrong directions."
] | null | D | |
mmlu_stem | mmlu_stem_13351 | It has more than 845 million users worldwide. If it were a country, _ would have the third largest population in the world, behind China and India. This is Facebook, a popular website from the US. It is similar to Renren in China. Mark Zuckerber was born on May 14, 1984. As a little kid, he loved creating little fun computer programs. He set up the network in February of 2004. He was then a second-year student at Harvard University. One day, he had the idea of building a website for Harvard students to get to know each other. He set up the Facebook website. Harvard students could share photos and their personal information there. Soon, the website became very famous. Zuckerberg decided to leave Harvard to run Facebook full time. It was the biggest adventure in his life and later brought him great success. Now, the service is popular around the world. Greetings such as "Have you checked your Facebook page today?" became a part of young people's everyday language in the US. People can exchange message and get the latest information about their friends on Facebook. Zuckerberg's dream is to connect people through the Internet. "Facebook is to make the world more open and connected," he said. What's the young man's secret to success? Zuckerberg believes it's important to have an open mind and be ready to try new things. "The riskiest thing is to take no risks," he once said in an open letter. Sometimes the simplest ideas go furthest. We hope Mar Zuckerberg can go much further, maybe even further than Bill Gates. People can do the following on Facebook except _ . | [
"exchange messages",
"share information",
"do online shopping",
"put up photos"
] | null | C | |
mmlu_stem | mmlu_stem_9777 | Plants need green leaves to make food. A plant needs sunlight and carbon dioxide from the air for making food and it also needs water and salts from the soil to make food too. There are certain cells in the leaves which change carbon dioxide and water into sugar. To do this the cells needs energy, which they get from the sunlight. Green leaves make food for the whole plant. A red leaf can make food too because under the red color1ing of the leaf there are food----making cells. There are no leaves which are completely yellow, for they can't make food. The plant makes sugar for its food. In sunlight green leaves make a lot of sugar. The veins can't carry all this sugar away, so the leaves change the sugar into starch , which is kept and so stored in the leaves. At night, the starch changes back to sugar. It is then carried away from the leaves. Some of the sugar is used as food by the plant while the rest is stored as starch. In some plants, food is stored in the roots, in others it is stored in the stem and in leaves, fruits and seeds. To make food, plants need a lot except _ . | [
"the air",
"the soil",
"the green leaves",
"dead leaves"
] | null | D | |
mmlu_stem | mmlu_stem_4174 | Jeremy Wirick, 9, has been back in school for less than two months, but he has already had several asthma attacks. A recent attack happened on October 2, after he pushed himself too hard in gym class. Running, power walking, jogging and push-ups took their toll. When Jeremy got home an hour or two later, he was out of breath. He needed to use a nebulizer, a machine that helps send medicine quickly to the lungs, to get his breathing back to normal. Asthma attacks like Jeremy increase in September and October. More than six times as many asthma sufferers who are elementary-school age need hospital treatment in the fall as in the summer. Experts believe many factors can contribute to back-to-school asthma. Kids get together in close spaces, they start passing viruses around. A viral infection can cause an asthma attack. There are also certain fall allergies that can cause attacks. Exercise is another common cause of an attack. Besides, the stress of school can make asthma worse. Parents can play a big role in helping kids with asthma start the school year right. Dawne Gee's10-year-old son, Alexander, has had asthma since he was a baby. Before the school year starts, she tells school workers in writing about her son's asthma. The Gees live in Kentucky, which has passed laws allowing students to carry their asthma medication with them at school. Alexander's mom makes sure he has his inhaler with him when he goes to school and that he keeps it on hand at all times. In Delaware, where Jeremy lives, kids are allowed to carry their inhalers at school. The American Lung Association says that about 6.2 million American children suffer from asthma. Asthma is the chronic illness that causes students to miss the most days of school. There are many things that schools can do to help students control their asthma By saying "Running, power walking, jogging and push-ups took their toll.", the writer means that _ . | [
"physical exercise affected their health",
"physical exercise gave them a deep thought",
"asthma attacks made them like physical exercise",
"asthma attacks could be cured through physical exercise"
] | null | A | |
mmlu_stem | mmlu_stem_6297 | Word Power Author(s): Kaplan $13.95 You'll never be at a loss for words again. Energize your vocabulary with must-know everyday words that are the essentials of a good vocabulary, engaging lessons to help you use words in text, hot words often found on tests, tips to help you figure out new words, roots, and more. Grades: 8 & up Ages: 13 & up Word Smart Junior Author(s): Russell Stauffer $ 17.95 Now this is the way to add new words to your vocabulary! Word Smart Junior will make you laugh so much. You'll be amazed that you've just learned more than 120 fascinating and very useful words! Parents, teachers, and friends will marvel at your eloquence ! Grades: 3-5 Ages: 8-10 Grammar Smart Junior Author(s): Marcia Reynolds $ 16.85 Do you quake when your teacher says, "Now it's time for grammar"? Do your verbs agree with your subjects? Fear no more! A big Hollywood producer and a famous movie star will help you learn all those nasty elements of grammar. You'll be amazed at how quickly you learn, and how much fun it can be. You'll finally know your grammar backwards and forwards, and you'll never have to worry about it again. Grades: 7-9 Ages: 12-14 Grammar Smart: An Audio Guide to Perfect Usage Author(s): Julian Fleisher $ 12.68 The words you use say a lot about you ... but the way you put them together says even more. Your grammar makes an immediate and lasting impression on your teachers, and even your friends. So don't make the mistake of thinking that grammar is too complicated. We've created Grammar Smart to help you write and speak with clarity and confidence. Grades: 6-8 Ages: 11-13 If a ten-year-old boy wants himself to be admired because of his speech ability, he may buy _ . | [
"Word Power",
"Grammar Smart Junior",
"Word Smart Junior",
"Grammar Smart: An Audio Guide to Perfect Usage"
] | null | C | |
mmlu_stem | mmlu_stem_14999 | The most common disease in the world is the cold. It often starts with a sore throat . You sneeze and your nose runs. You usually have a headache, too. Often you have a cough later. It's not a serious disease, but you can feel quite bad. There isn't a cure for a cold, but you can take some medicine to make you feel better. For example, you can take aspirin to get rid of your headache. It is good to rest. and to drink a lot of water, too. A doctor once told me."With the right medicine. a cold will last for seven days. With no medicine, it will go on for a whole week!" A long time ago, people understood that some plants made them feel better. For example, the juice of lemons makes a sore throat feel better. In modern times, scientists have found out which chemicals are in them. Man, of our medicines today are made from those chemicals. There are some diseases that we can't cure yet. And nobody has found a cure for old age. But because of modern medicines, the average people now live longer than their grandparents. From the passage. which of the following is not TRUE? | [
"You can feel quite bad though the cold is not a serious disease.",
"We can get some medicine to get rid of our headache.",
"Even if you don't take any medicine, you will feel well after seven days.",
"People have found a cure for old age."
] | null | D | |
mmlu_stem | mmlu_stem_1773 | Jim was looking up at the sky when he saw it. He saw a bright light. It got brighter and brighter. But after a few seconds, it started getting less bright. It took him a second to know for sure, but he knew he had seen a shooting star! This wasn't the first time that Jim had seen something strange in the sky. It was last year, when he was driving home from work at night. He saw another light in the sky that night, but it wasn't anything like this one. The one he saw last year didn't get brighter. The one he saw last year didn't get less bright. The one he saw last year was round, and Jim was sure that it was a space ship. When Jim saw the shooting star tonight, he was even more sure of what he saw last year. Some people said that the space ship was really a shooting star. But now that he had seen a real shooting star, he knew for sure that this one was different. Jim wondered what planet the space ship had come from. What did Jim see last year? | [
"A shooting star.",
"A space ship.",
"A planet.",
"A raccoon."
] | null | B | |
mmlu_stem | mmlu_stem_21612 | Dissolving sucrose makes liquids | [
"hot",
"dry",
"sweet",
"cold"
] | null | C | |
mmlu_stem | mmlu_stem_5195 | 8-year-old Mario spent one day selling lemonade in New Jersey. But he didn't do it for spending money. "The people in the hospital need more medicine," Mario said. Mario's lemonade stand raised money after a group called Alex's Lemonade Stand, which is an organization that raises money for research on cancers that affect kids.Their research might one day lead to a cure.The organization is named for Alexandra Scott, a girl who died of cancer eight years ago when she was eight years old.Alex' s Lemonade Stand actually began four years earlier before she died.That's when she announced that she wanted to sell lemonade to raise money for a cancer cure for all kids. This year, thousands of kids across the country are selling lemonade to raise money for Alex's foundation.In Maryland, a group of kids at the Children's Guild held a fund - raiser for Alex in April. And in Florida, Harrison began raise money for Alex's Lemonade Stand last year, when he was seven.This year, he raised more than $ 500 dollars.Harrison hoped it could help kids by scientists finding a cure.He also dreamed of finding a cure himself."When I grow up, I'm going to invent these little 'nano-bots' that can swallow cancer.They can fight cancer for you with their little mini - lasers and stuff," Harrison said. "To see how that one simple idea grew into this national foundation, all of these supporters coming out in Alex's memory , it' s really special for me.It' s against my expectation,"said Liz Scott, Alex' s mother. What made Mario's lemonade stand even more special and amazing than most is that he, too, has cancer--six brain tumors.But Mario is not giving up.And he is determined to help other kids like him--in memory of Alex." He lost a lot of friends who were in the hospital,"said Mario's mom, Anna."And he wants to be sure that he doesn't lose anymore." What' s the passage mainly about? | [
"Kids have a good time in selling lemonade.",
"Kids are determined to help others with cancer.",
"Kids sell lemonade to raise money to fight cancer.",
"Kids with cancer work hard to show they are special."
] | null | C | |
mmlu_stem | mmlu_stem_6994 | Reader Janet Maynard has a lot of young bushes in her garden and is suffering from " _ . So for Janet and anyone else who doesn't want to waste time, effort and water, here are my top tips for keeping plants refreshed in thirsty times. Water in the evening if possible, rather than leaving it till you see things suffer. That way the roots can take up the water in cool soil overnight. Violently jetting hoses mess up the soil structure and may expose delicate roots. Use a rose on a can. Aim low - don't waste water wetting leaves, even though they look pretty and "refreshed". The most valuable and easily damaged plants need the most attention, such as newly planted trees, bushes and climbers. Remove any water-keeping mulch you may have put around the base, then water it thoroughly at least two gallons, slowly. Don't aim your can rose at the stem - which we all usually tend to do. Aim the water in a wide circle so that the whole of the area under the plant is watered. You could even make a channel in the soil right around the plant so that the water is held in place as it soaks in. Replace the mulch. Repeat each week even in showery weather for the first summer. How much water for pots? Fill up the gap between the top of the soil and the top of the pot. Let the water soak right in and then fill it again. Do this daily in hot weather for most summer potted plants. Stand pots in saucers - it makes a big difference. But remember to check that the plants are not sitting in water for days on end when the weather turns wet. Roots will rot. If the fertilizer in pots really dries out, the water may get straight out of the pot without being absorbed. Correct this by standing or floating the pot in a bucket of deep water until it sinks and no bubbles rise. A push-button watering can makes for more efficient watering, and recycled water bottles upside down with a needle which has a hole on the end are useful, too, for pots. We may easily learn from the passage that _ . | [
"potted plants need to be watered every week even in rainy weather.",
"we'd better put water on the leaves and stems to keep the plants refreshed.",
"It's better to use a rose on a can to water than jetting hoses.",
"people usually don't want to waste time, effort and water in raising plants."
] | null | C | |
mmlu_stem | mmlu_stem_19907 | As a body of waters surface area increases what else will increase? | [
"vaporization",
"evaporating milk",
"coals",
"fires"
] | null | A | |
mmlu_stem | mmlu_stem_4680 | Animal moms are great moms. You might be surprised at some of these moms. Octopuses The mother octopus lays about 50,000 eggs. For about 300 days, she stays with the eggs, cleans them and protects them. She does not leave to feed. However, this animal mom dies as soon as the eggs are hatched . Crocodiles A crocodile mother puts a lot of time and effort into raising her babies. She starts by building a nest , which she guards for over two months! When the eggs are ready to hatch, the young crocs call out to their mother, who digs them out and helps them hatch. She then carries them in her mouth down to the water, where she will guard them for several more weeks or months until they learn to hunt on their own. Bats Bats become moms by hanging head up in a cave, giving birth. Catching the youngster before it can fall to the ground below, she puts it in a pouch . Bat moms may carry babies with them when feeding for the first few days. As the little bats get bigger and heavier, moms help them hang on the wall of their caves and return often to feed them. It continues for about three weeks, until the babies are grown up and able to fly on their own. Koalas The animal mom gives birth after a pregnancy of only 35 days. The hairless baby climbs into its mother's pouch and lives there for another five months. When the little koala is between five and eight months old, it leaves the pouch for short periods of time but returns for safety. Once it is too big to return to the pouch, it will climb onto its mother's back and ride there until it is about 12 months old. Which animal moms die when their babies are born? | [
"Octopuses.",
"Crocodiles.",
"Bats.",
"Koalas."
] | null | A | |
mmlu_stem | mmlu_stem_9952 | Neumann was the oldest of 3 children of a banker, and his speed of learning new ideas and of solving problems stood out early.At 17, his father tried to persuade him not to become a mathematician because he may lead a poor life being a mathematician, and so Neumann agreed to study chemistry as well.In 1926, at 23, he received a degree in chemical engineering and a Ph.D.in mathematics.From then on, mathematic provided well enough for him, and he never had to turn to chemistry. In 1930, Neumann visited Princeton University for a year and then became a professor there.His first book was published in 1932.In 1933, the Institute for Advanced Study was formed, and he became one of the 6 full-time people in the School of Mathematics (Einstein was one of the others). World War II hugely changed Neumann's areas of interest.Until 1940 he had been a great pure mathematician.During and after the war, he became one of the best mathematicians who put mathematics theories into practice.During the last part of the war he became interested in computing machines and made several contributions.After the war, Neumann continued his work with computers, and was generally very active in government service.He received many awards, was president of American Mathematical Society and was a member of the Atomic Energy Commission.He died in 1957 of cancer. Neumann really was a legend in his own time, and there are a number of stories about him.His driving ability is a part of this legend.He reported one accident this way: "I was driving down the road.The trees on the right were passing me in an orderly fashion at 60 miles per hour.Suddenly one of them stepped in my path." Which of the following is true of Neumann? | [
"He had three children.",
"He died from an accident.",
"He received many awards in his life.",
"He and Einstein were classmates in Princeton University."
] | null | C | |
mmlu_stem | mmlu_stem_8867 | Food sometimes gets poisoned with harmful things. A person who eats such food can get an illness called food poisoning . Food poisoning is usually not serious, but some types are deadly. The symptoms of food poisoning usually begin within hours of eating the poisoned food. Fever is one of the most common symptoms. Certain microorganisms cause most types of food poisoning. Bacteria and other microorganisms can poison eggs, meat, vegetables, and many other foods. After entering the body, these tiny living things release poisons that make people sick. Some chemicals can also cause food poisoning. They are often added to food while it is being grown, processed, or prepared. For example, many farmers spray chemicals on crops to kill weeds and insects. Some people may have a bad reaction to those chemicals when they eat the crops. Some plants and animals contain natural poisons that are harmful to people. These include certain kinds of seafood, grains, nuts, seeds, beans, and mushrooms. When people handle food properly, the risk of food poisoning is very small. Microorganisms multiply rapidly in dirty places and in warm temperatures. This means that people should never touch food with dirty hands or put food on unwashed surfaces. Food should be kept in a refrigerator to stop microorganisms from growing. Meat needs to be cooked thoroughly to kill any dangerous microorganisms. People should also wash food covered with chemicals before eating it. Finally, people should not eat wild mushrooms or other foods that grow in the wild. Some of these foods may contain natural materials that are poisonous to humans. In addition, some types of fish can be poisonous. Most people recover from food poisoning after a few days of resting and drinking extra water. If people eat natural poisons, they must go to the hospital right away to have their stomachs emptied. It can be inferred from the passage that _ . | [
"natural materials are safe in food processing",
"chemicals are needed in food processing",
"food poisoning can be kept under control",
"food poisoning is out of control"
] | null | C | |
mmlu_stem | mmlu_stem_6069 | Have you ever heard a news reporter talk about DNA?Reporters talk about DNA found at the scene of a crime.They talk about police finding DNA "fingerprints".Police sometimes use DNA as a clue to find out who committed the crime. DNA is a substance that makes up genes.Everything alive has genes.Plants have genes.Animals have genes.You have genes. Genes are the basic units of heredity .Heredity means all the characteristics you inherit from your parents.You get your genes from your parents.You inherit half of your genes from your mother.You inherit half of your genes from your father. Genes are a kind of code.A tree's genes tell what shape its leaves will be.A cat's genes tell what color its fur will be.Your genes tell what color your eyes will be.Your genes tell what color your hair will be.Everything about you comes from the code in your genes. Genes line up on strands called chromosomes in cells.Everything alive is made up of cells.Chromosomes are in the center,or nucleus of cells. Different parts of you are made of different kinds of cells.Your muscles are made of muscle cells.Your skin is made of skin cells.The code in your genes tells your body to make different kinds of cells.The genes in each cell tell the cell how to work.They tell the cell when to make new copies of itself. An Austrian monk named Gregor Mendel first saw inherited patterns in pea plants.He experimented with pea plants in the 1860s.One of the things,or traits Mendel studied was what makes some pea plants tall and some short.He said that the traits must come from units of heredity passed from the parent plants.These units were later called genes. In the mid-1900s,scientists discovered that genes are made of DNA.In the 1970s,scientists learned how to change DNA with genetic engineering.Scientists also learned that problems with certain genes cause diseases.Muscular dystrophy,cystic fibrosis,and hemophilia are some genetic diseases--diseases caused by problems in genes.Today,scientists are looking for ways to cure genetic diseases by changing genes through a process called gene therapy. Which of the following about genes is correct according to the passage? | [
"Plants,animals and human beings have the same genes.",
"Half people inherit all genes from their mother,others from their father.",
"Genes decide the trees shapes,the cats' fur color and our eyes' color as well.",
"Genes will give you a code when you need them."
] | null | C | |
mmlu_stem | mmlu_stem_1561 | Last Saturday was the best day of Timmy's summer. After waking up at nine and turning on his lamp, Timmy ran downstairs, counting the steps as he always did. There were always seven. At the bottom, he jumped over his dog Lucky who was licking himself clean. Timmy took a bite of toast and a sip of the orange juice his mom Suzie had left on the table for him before running outside to check the mail. Before he made it down the steps, he almost tripped on a big package waiting for him. It was here! Timmy's birthday present from his grandmother Betty had arrived. He brought it into the kitchen, where his dad Ryan was waiting for him with a grin on his face. As Timmy tore into the package, he found the greatest present he could have asked for. It was a huge water gun! Timmy immediately filled it up and ran outside to begin playing. His neighbor Maeby came outside with her water hose after eating her sandwich and the two got in a water fight! Soon, Timmy's dad came outside to play too! He brought 11 water balloons. Soon all five of Timmy's friends were playing in the water with each other. Timmy's water gun was the best toy out there. It worked by winding up the handle before firing the water. Soon it was evening and Timmy's dad was firing up the grill to cook hotdogs and hamburgers for Timmy's friends and their families. How many steps did Timmy run down? | [
"Eleven",
"Seven",
"Five",
"Nine"
] | null | B | |
mmlu_stem | mmlu_stem_11451 | Animals like the lion are known as carnivorous (meat-eating) animals. They feed on smaller animals. But many other animals eat grass or plants. They are called herbivorous (plant-eating) animals. You may be surprised to learn that there are carnivorous plants as well as carnivorous animals. Plants that grow in poor soil need other food. They trap (catch by a trick) small insects and take their bodies as food. The pitcher plant is a common carnivorous plant. This plant has a clever trap like a pitcher or jar. It even has a lid to keep out of the rain. The mouth of the pitcher is covered with something sweet like honeydew . Insects come to the plant to feed on the honeydew. When they have eaten all that is round the mouth, they go into the pitcher to look for more. There is more honeydew deep in the pitcher and they go down to feed on it. The inner wall of the pitcher is covered with fine hairs. These hairs point downwards so that the insects cannot climb out of the pitcher. They are trapped in it. They die there, and their bodies are taken as food by the plant. From this passage, we can mainly learn that_. | [
"Not all plants are carnivorous",
"All plants are herbivorous",
"Not all animals are carnivorous",
"Carnivorous plants can also be found"
] | null | D | |
mmlu_stem | mmlu_stem_13052 | As space science develops, man has learned more and more about space. Space is not only amazing but also dangerous. While working in space, spacemen are facing danger as well as success. Scientists have found out that _ to spacemen in space. When spacemen are working in space, they are in danger of radiation from the sun and other stars, which is bad for their health. The damage done by radiation won't be discovered until their children or even grandchildren are born. Some special medicine may work a little, but no really helpful medicine has been. Space junk is also thought _ It's reported that there are 9,000 man-made things flying in space. About 30% of these are satellites, 10% are spaceships, and the rest are space junk. An explosion in 1996 made a cloud of 300,000. _ , each at least 4mm in size, and even a small piece of these knocked against a spaceship window and did some damage. Scientists are watching and reporting any possible danger all the time. They are working on helpful ways to do with space junk. Although space is really dangerous, it interests everyone on the earth. In the near future, it may become usual for people to spend a few days in a space hotel. We may even choose to leave the earth and live in space in a few years. So we should care for space and do something to help improve the space environment. Which of the following about the passage is TRUE? | [
"The passage tells us that radiation in space comes from the sun and other stars.",
"Every one of us can make a trip to space now.",
"Scientists have found out ways to solve any problem in space.",
"People are afraid to travel to space because it's too dangerous."
] | null | A | |
mmlu_stem | mmlu_stem_20116 | A light bulb turns on when it receives energy from | [
"a cable",
"an oven",
"gasoline",
"a person"
] | null | A | |
mmlu_stem | mmlu_stem_3080 | Imagine this: you get up in the morning and put on a custom printed T-shirt. Then you eat some 3-D printed food and relax on your printed sofa. Perhaps you take a ride in a printed electric car to the hospital to get a printed tooth fitted. Though some of these things may seem impossible, they're closer to reality than you might think. The world of 3-D printing is coming to a store near you soon. The idea of 3-D printing is to produce complicated shapes in a very personalized way. If you want to make a totally new object, you need to make a virtual design in a CAD(computer aided design)file first. Or you can use a 3-D scanner to make a digital copy of an object. Then, based on the design or copy, the 3-D printer makes paper-thin slices out of liquid, plastic, or metal and puts them together to create the object you want. There are many areas in which 3-D printing can change our lives. One such area is health care. Researchers have developed simple 3-D printed organs, which can be used in life-saving operations. A 17-year-old boy in the US has also recently developed a brain-powered, 3-D printed replacement hand. From heart monitors to fake limbs , we can soon be living longer thanks to 3-D printed technology. Another area that 3-D technology looks sure to change is food. Can you imagine being able to print your favorite dishes at home at the touch of a button? Even big companies are behind the trend. Hersheys, one of the largest chocolate makers in the world, recently announced that it would start producing chocolate with the help of 3-D printers. NASA, the US space agency, has reportedly spent $125,000 (767,594 yuan) developing a "3-D pizza printer". It is not yet clear how long it will take until 3-D printers are available to everyone. But one thing is for sure: the possibilities are endless. Compared with traditional manufacturing procedures, 3-D printing _ . | [
"isn't practical in daily life",
"relies less heavily on the use of 3-D scanners",
"can produce complicated products in larger sizes or numbers",
"has an advantage in meeting the personal needs"
] | null | D | |
mmlu_stem | mmlu_stem_2676 | For 40 years, people in London have been happy to see parakeets in their parks. The shocking green body and long tail have brought a bright color to the parks, which have attracted a lot of people. However, the parakeets are no longer welcome. They will push out local birds from trees to build their own nests, and will also take most of the food in the parks, such as seeds, fruit and nuts. Sometimes by accident, plants and animals are carried to new places. They are transported by trains, ships or even planes. Often, animals like fishes get transported in the water containers of ships. When these ships reach new places and pump out the water from their tanks, these animals will start a new life in a new place. Sometimes people take plants and animals from one part of the world to the other to solve a problem. But it will create a bigger problem. Years ago, the farmers of northern Australia brought the toads from South America to their farms. They thought they would kill the beetles that harm the sugarcane crops. But the toad has done much more. It is now killing Australia's native animals, such as snakes, water birds and so on. How do the parakeets affect the local birds? | [
"They sometimes kill the local birds.",
"They destroy trees which the local birds live in.",
"They take the local birds' nests and food.",
"They have attracted much of people's attention."
] | null | C | |
mmlu_stem | mmlu_stem_2161 | Which of these describes water in a solid state? | [
"Vapor rising in the sky",
"Hail during a storm",
"Waves crashing on the seashore",
"Rain falling from the clouds"
] | null | B | |
mmlu_stem | mmlu_stem_7112 | Humans aren't the only ones getting a buzz from coffee.Caffeine can improve memory among honeybees and lead to better pollination .According to a recent study published in the journal Science. The study was conducted by a team of researchers at Newcastle University in the United Kingdom.They found that the nectar of some flowers,such as those from grapefruit and lemon plants,as well as certain coffee flowers,contains low doses of caffeine.To get bees to feed on these flowers,the team trained the insects to associate food with the smell of the flowers.They also trained another group of bees to feed on nectar from flowers that were sweetened with a sugar, but did not contain caffeine.After 24 hours,the bees trained on caffeinated flowers returned to these plants three times as often as those trained on the sweetened flowers returned to the uncaffeinated plants. Professor Geraldine Wright led the researchers."Remembering floral traits is difficult for bees to perform at a fast pace as they fly from flower to flower and we found that caffeine helps the bee remember where the flowers are,"Wright said in a statement. Improved memory led to the better pollination.That's because once bees sip the caffeine nectar, they continue to look for more coffee plants to pollinate.This also suggests that caffeine plays a role in improving the bees'ability to search for food. Researchers found that caffeine's effect on the bee brain is similar to its effect on mammals."The change is similar to that produced by caffeine in neurons associated with learning and memory in the rat brain,"Wright said. Bee populations have declining since 2007.The dramatic drop in the insects'numbers has serious effects for ecosystems and the farming industry.Bees are needed in the reproduction of crops and spreading wild flower species.Understanding what keeps bees buzzing could help to make sure that the insects are able to remember and pollinate their favorite flowers. After reading the passage,John,who works in the farming industry, will probably feel _ . | [
"annoyed",
"angry",
"nervous",
"excited"
] | null | D | |
mmlu_stem | mmlu_stem_6302 | Beijing ?(13, July) China sent up a new data relays atellite , Tianlian I -02, on Monday at the Xichang Satellite Launch Centre in South-western Sichuan province.The new satellite will promote the country's satellite communication network for space docking . The satellite was launched on a Long-March-SC carrier rocket at 11:41 p.m., sources at the centre told Xinhua News Agency.The satellite separated from the rocket 26 minutes after its launch and was then successfully delivered into a geostationary transfer orbit . Developed by the China Academy of Space Technology under the China Aerospace Science and Technology Corporation, the satellite is the country's second data relay satellite.The first, Tianlian I -01, was launched on April 25.2008. The two satellites will form a network to improve communications between China's spacecraft and bases on Earth, according to the centre.They will also be used to help the nation's first space docking, scheduled for the second half of this year. As planned, China will launch space module Tiangong-I (1), which was designed as a platform that will dock with an unmanned spaceship, Shenzhou, for the county's first space-docking mission this year. Two more Shenzhou spaceships will dock with Tiangong-I next year, and one will be manned by two or three astronauts, according to China Manned Space Engineering Office, which was the main user of the Tianlian I series data relay satellites. "The new satellite can cover a greater area to track and command the country's space vehicles m low-Earth orbits, such as manned spacecraft and remote sensing satellites, from a higher position m outer space.Only three satellites of this kind are needed to form a global communication network, and China has two now." Pang Zhihao, a researcher and deputy editor-in-chief of Space International, said. The satellite could also equip astronauts with real-time communications, which will benefit the county s future manned space flights, he said. What is the main purpose to send up Tianlian I -02 ? | [
"To test the function of a Long-March-SC carrier rocket.",
"To carry some astronauts into space to do some research.",
"To send more information and clearer pictures to mobile phones on the earth.",
"To promote the country's satellite communication network for space docking'"
] | null | D | |
mmlu_stem | mmlu_stem_14218 | I have a dog . It's a girl dog. She is two years old. Her ears and eyes are big. But she has a small nose and a small mouth. Her hair is long. She has four long legs, too. Does she have mum and dad? Yes! They come from Cuba. What's her name? Can you guess? Her name is Juzi, because she is orange. Wow, she is my toy dog. My dog is _ . | [
"a girl",
"from Cuba",
"three years old",
"a toy"
] | null | B | |
mmlu_stem | mmlu_stem_9188 | As the population grows and temperatures rise, it will become more difficult to grow enough food for everyone. So, scientists are exploring the planet for plants that do not need as much water as today's crops. The Mojave Desert in the US state of California is home to some of these plants. Scientist Heather Rose Kates of the University of Florida is in that desert. She is searching along roads for a plant called coyote melon which is a kind of squash .Coyote melon may not taste good, but it can be grown in places that have little rainfall. The desert where it grows gets just 15 to 20 centimeters of rain per year, or less. Other kinds of squash need at least two and a half centimeters per week to grow. Scientists are considering combining wild coyote melon with regular squash to see if they can make a tasty vegetable that doesn't need as much water to grow. That could be useful on a planet growing warmer and more crowded every day. Andy Jarvis works at the International Center for Tropical Agriculture. He says farmers will need to produce 50 to 70 percent more food by 2050 to feed the world. So, he says, researchers are studying the wild versions of farm-grown crops. But he says there is a problem. He says many wild versions of farmed plants are disappearing. He says they are threatened and scientists have not collected their seeds for future use. Scientist Kates is part of an international effort to gather these plants and save their seeds while it is still possible. Workers are collecting wild potatoes in Argentina and wild peppers in Para-guav. The plants and seeds will be sent for storage to the Global Seed Vault in Norwav and at Kew gardens in Britain. Ms Kates spends most of her time in a laboratory. She says gathering plants has helped her understand more about them. Why do scientists study coyote melon? | [
"It tastes good.",
"It is easy to cook.",
"It only needs little water to grow.",
"It is welcomed by many American people."
] | null | C | |
mmlu_stem | mmlu_stem_11073 | Life on land probably began about 430 million years ago, though it has existed in the water for perhaps as much as 3,000 million years. When we think of the first thing on land, we probably think of strange animals coming out of the oceans, but in fact no animals could have been living if plants had not been on land first. Plants had to be on land before animals arrived. They supplied the first land animals with the surrounding and food necessity, since they, the plants, are the only form of life that is able to get and store energy. The first plants to exist out of the water were probably certain kinds of algae which were followed by other plants that grew close to the ground and needed water in which to reproduce. Once the move to land had been made, however, evolution took place quickly. By the end of 100 million years, plants had developed their roots ,and some had got tree -like forms since height was very important in gaining sunlight. About 300 million years ago, much of the world was covered with forests of huge trees. In most ways they were like modern trees. They had roots, leaves, wood, but mostly they had not developed seeds. According to the passage, _ appeared earlier than _ . | [
"apples; oranges",
"oranges; apples",
"oranges; roses",
"algae; wheat"
] | null | D | |
mmlu_stem | mmlu_stem_12349 | Should we be afraid of sharks ? Maybe not. New research into the reasons for shark attacks suggests that sharks don't like the way humans taste! In fact, most people who are attacked by the shark are still alive after receiving only one bite . Why is this? There are many opinions to explain why sharks sometimes attack people. One opinion is that sharks are just curious . We know that sharks are the strongest animals in their environment, so they are not afraid of anything. Naturally, that means they are curious when they meet something unusual. Because they don't have hands or feet., the only way they can find out an object is to bite it! It is thought that sharks sometimes bite humans for this reason, and then swim away. Scientists also say that sharks would not waste energy trying to eat a human, as we have a lot of bones . It is hard for a shark to eat us because sharks don't have hands, and they can't pull the meat off our bones. Maybe that's why they only bite us once. Unluckily, one bite from a large shark is serious enough to hurt people greatly! Another opinion is that sharks attack humans by mistake. Some sharks may sometimes mistake humans for a seal. An example of this is when a shark attacks a surfer. A surfer lying on a surfboard looks like a seal when seen from below. Sharks like seals because they have thick fat. Whatever the reason for shark attacks on humans, sharks should be afraid of us. Sadly, we kill almost 40 million of them each year. How do sharks find out about an unusual object according to the passage? | [
"By biting.",
"By smelling.",
"By touching.",
"By killing."
] | null | A | |
mmlu_stem | mmlu_stem_13679 | There are forty-eight students in our class. There are twenty-three boys and twenty-five girls. Some students live near the school, and some others live very far from the school. About half of the students come to school by bike . They often get to school at a quarter to seven. About ten students often come to school by bus. They often go to school very early, too. Another ten students come to school on foot. Their homes are near the school, but they are often late for school, because they get up very late. How many students live far from the school? | [
"About thirty-eight",
"About twenty",
"About ten.",
"About twenty-five"
] | null | A | |
mmlu_stem | mmlu_stem_2004 | Which of the following is a mineral? | [
"diamond",
"plastic",
"steel",
"wood"
] | null | A | |
mmlu_stem | mmlu_stem_16677 | A father and his young son get into a bus in a small city and sit down. The bus conductor comes to them for their money. The man says "I want one ticket to Oxford." and gives her a shilling( ). The conductor looks at the small boy for a few seconds and then says to him, "How old are you young man?" The man begins speaking,but the conductor stops him,and the boy says, "I'm four years old at home, and two and a half in buses and trains." The man has to take six pence out of his bag and gives the money to the conductor. The conductor gives him one and a half tickets. The conductor asks _ how old he is. | [
"the father",
"the little boy",
"the bus driver",
"the father and the son"
] | null | B | |
mmlu_stem | mmlu_stem_16348 | Many cultures have different ideas about why people catch colds. For example in the United States, some people think that you can catch a cold if your feet get cold. So, mothers tell small children to wear warm boots in the winter. In other places, including parts of the Middle East, some people believe that strong winds cause colds. So, on trains and buses, people usually don't like to sit next to open windows. In parts of Europe, some people think that wearing wet clothes will give you a cold. They say that after you go swimming, you should quickly put on dry clothes. Today, scientists know that colds are caused by a virus . But the old ideas are still very strong, and many _ . Which is NOT a cause of colds in the reading? | [
"bad food",
"wet clothes",
"a virus",
"strong winds"
] | null | A | |
mmlu_stem | mmlu_stem_5971 | Every few years comes a fitness trend that has people scratching their heads in amazement. "Crunning" will probably be one of them. The "c" stands for "crawling" . This new sport needs two-legged humans running on all fours! The funny idea is the brainchild of Shaun McCarthy. The 34-year-old is convinced that it will revolutionize fitness as we know it. According to the sports enthusiast, "The only thing that crunning's changed about fitness is that it's changed everything about fitness." Mccarthy has no scientific evidence to prove that crunning is more efficient than traditional two-legged running. However, he believes it is a more effective way to exercise because it puts an emphasis on the shoulders and arms, providing a complete body workout. Mccarthy also says crunning seems to tire him out more. He therefore concludes that the unconventional exercise is a bigger calorie burner than normal running. While experts generally agree that crunning may provide a better workout, many are not sure if it is the right exercise for humans. Fitness coach Kevin Dean says we are not built to be on all fours and our wrists are therefore not as strong as our ankles. He believes crunning, which he calls a fad , could result in bad wrist and shoulder injuries, not to mention broken noses. But McCarthy is not worried. Since the release of his crunning video a few weeks ago, many Melbourne residents have been seen scampering around on all fours. As it turns out they are not the only ones. In the Chinese city of Zhengzhou, crawling, a much slower version of crunning, has been a favorite activity for many years. According to some enthusiasts, the light exercise that is believed to date back two thousand years to the Han Dynasty, is good for curing back and spine ailments. Ready to give crunning try? Then Mccarthy recommends investing in some good shoes, hardy gloves and most important of all, a face mask! What does the author think of crunning? | [
"Dangerous.",
"Interesting.",
"Beneficial.",
"Unbelievable."
] | null | B | |
mmlu_stem | mmlu_stem_7328 | Joker found one of the biggest diamonds in the world right in his own back yard. He sold the stone to a diamond dealer for over three hundred thousand dollars. In New York, the diamond was resold---this time for almost eight hundred thousand dollars. The true value of a diamond is never known until it has been cut. Once cut successfully, its value can increase a thousand times. It's easy to understand why the owner of Joker's diamond went to the best diamond cutter he knew, Kaplan. The cutter studied the diamond for twelve whole months. When he felt he was ready to start work, he discovered a flaw . He had to begin his calculations all over again, or he might have made the stone useless. Six months passed, and Kaplan finally said to the owner, "I am ready to start my work. There will be one excellent diamond that will be comparable one excellent diamond of first-class quality " Kaplan waited a few more days until he felt he was in the best physical and mental condition possible. He picked up his tools and held his breath as he made the diamond exactly as he promised. Kaplan studied the diamond for _ . | [
"more than one and a half years",
"more than half a year",
"over eight months",
"more than nineteen months"
] | null | A | |
mmlu_stem | mmlu_stem_6845 | Far out in the lake was a large wooden platform on which stood an improbably high diving board -- a kind of wooden Eiffel Tower. It was, I'm sure, the county's tallest wooden structure and no one had ever been known to jump from it. So it was quite a shock when our teacher, Mr. Milton, announced that he would dive off the high board that very afternoon. Word of his questionable plan was already spreading through town as Mr. Milton swam out to the platform. He was just _ when he got there but even from such a distance the high board seemed almost to touch the clouds. Once at the top, he paced the enormously long board, then took some deep breaths and finally stood at edge. He was going to do it. Several hundred people had gathered at the shore to watch. Mr. Milton stood for quite a long time, then he raised his arms, took one massive bounce and launched himself into a perfect dive. It was beautiful. He fell with perfect style for what seemed minutes. The crowd fell silent. The only sound to be heard was the faint whistle of his body tearing through the air toward the water far, far below. But about three quarters of the way down he seemed to have second thoughts and began suddenly to panic, waving his arms and legs like someone having a bad dream. When he was perhaps thirty feet above the water, he gave up on waving and spread his arms and legs wide, apparently hoping that it would somehow slow his fall. It didn't. He hit the water at over six hundred miles an hour. The impact was so loud that it made birds fly out of their trees three miles away. I don't think he entered the water at all. He just bounced off it, about fifteen feet back into the air. After that, he lay still on the surface, spinning like an autumn leaf. He was brought to shore by two passing fishermen in a rowboat and placed on an old blanket where he spent the rest of the afternoon. Occasionally he accepted small sips of water, but otherwise was too shocked to speak. From head to toe, he was covered with deep red bruises. ... It was the best day of my life. Why did Mr. Milton suddenly start swinging his arms and legs during the dive? | [
"He thought it was the best way to slow his fall.",
"He lost his confidence and started to panic.",
"He was signalling the crowd for help.",
"He wanted to show his courage."
] | null | B | |
mmlu_stem | mmlu_stem_2500 | China started late in network technologies and has lagged behind for years. With the rapid development of wireless technologies, the concept of the Fifth Generation (5G) mobile communication system started to emerge . Although the development of 5G network technology in the international community is still in the research stage, a number of foreign countries and organizations are working on it. In order to catch up with the pace of the times, China also needs to have its own place in such a competitive environment. Compared with 2G, 3G and 4G, 5G is not independent and brand-new. It is a combination and further development of present mobile communication technology. Besides the speed upgrade, 5G will also meet the requirements of large bandwidth, super high capacity, super dense site, super high reliability and whenever and wherever possible assess. There are some rapid changes in China's telecom space. With the 3G network now widely used, and 4G just around the corner, China is now preparing to enter the 5G era. China has started research and development on the 5G network, and plan to launch the network testing by around 2020. It's expected that a unified standard will be adopted globally with the 5G technology. "Under a same standard, different enterprises can be connected, and form a competition environment. Therefore, we can guarantee that enterprises can gain reasonable profits, and at the same time provide faster, better, more convenient and cheaper services to consumers." Wu Ku, Director of Dept. of Science & Tech., MIIT said. Wu Hequan from Chinese academy of engineering said, "5G will make it possible to connect one million devices to the so-called Internet of Things within one square meter. In the future, it will also be available on high-speed trains moving as fast as 500 kilometers per hour. In the area of the Internet of Vehicles, it can be used in unmanned vehicles, assisted driving and the management of smart cities." Wu believes China's future Internet will be faster, more intelligent and more reliable. Chinese government pays more attention to the development of 5G and adopts a more open attitude. With the joint effort of the industry, China will play an increasing important role in the global 5G development. What's Wu's attitude towards the 5G network technology? | [
"Negative.",
"Positive.",
"Unknown.",
"Neutral."
] | null | B | |
mmlu_stem | mmlu_stem_3867 | The human body is an amazing and complex machine. It is very tough, and we usually recover from illness or injury on our own, without the help of a doctor. But what happens when we need medical treatment? In the past, some people went to a clinic or hospital to see a medical doctor. Other people trusted ancient traditions and chose treatments such as herbal medicine or acupuncture . These two types of medicine----one modern and Western and the other ancient and Eastern----used to have nothing to do with each other. In recent years, however, people around the world have begun to recognize and accept both modern medical science and more traditional therapies. This new kind of medicine can be called integrative medicine (because it integrates, or combines, different types of medicine), or complementary medicine. Some of the principles of this type of medicine include preventing illness by helping people stay healthy, integrating different types of therapies according to the needs of each patient, and considering the health of the whole person rather than concentrating on a particular illness or injury. One health maintenance organization (HMO) in Madison, Wisconsin, has opened its Complementary Medicine and Wellness Center. At the center, HMO members are offered a variety of services. If you are suffering a sore back, try some massage treatments to relax your muscles and encourage the flow of healing energy in your body. If you have allergies or asthma, you could try homeopathy, which uses tiny amounts of allergens to stimulate your body's natural immune response. And if you're not ill, but just want to improve your strength and focus your mind, try a tai chi or yoga class. Patients who use these complementary medicine services appreciate having an alternative to surgery or to drugs and their side effects. They also enjoy activities and therapies that make them feel better even if they're not sick. And from the financial point of view of the HMO, preventing illness whenever possible is much less expensive than a hospital stay. According to Dr. Andrew Weil, founder of the Program in Integrative Medicine at the University of Arizona, integrative medicine combines the best parts of Western medicine with complementary therapies such as acupuncture and nutrition. And because both doctor and patient are working to prevent illness, they become partners with the same goal instead of strangers who see each other only when the patient is sick. Which of the following is NOT mentioned as an advantage of complementary medicine? | [
"It costs less than medical care in hospitals.",
"Patients can choose between complementary medicine and drugs or surgery.",
"It helps patients feel healthier even when they are not sick.",
"It focuses mainly on a particular illness or injury."
] | null | D | |
mmlu_stem | mmlu_stem_4430 | A "blogger" is a person who writes on an Internet computer Web site called a "blog". The word "blog" is a short way of saying Web log, or personal Web site. Anyone can start a blog, and they can write about anything they like. There are millions of blogs on the Internet today. They provide news, information and ideas in many people who read them. They contain links to other Web sites. And they provide a place for people to write about their ideas and react to the ideas of others. A research company called Perscus has studied more than 300 Web logs. It says that blogs are most popular with teenage girls. They use them to let their friends know what is happening in their lives. The study also says that more than 100,000 bloggers stopped taking part in the activity after a year. However, some people develop serious blogs to present political and other ideas. For example, the Republican and Democratic parties in the southern state of Kentucky recently started their own blogs. And American companies are beginning to use blogs to advertise their products. At the same time, some long-standing blogs have ended last week, blogging leader Dave Winer closed his free blog service weblogs. com. He says the site became too costly to continue. He started the blog four years ago. And thousands of people had written on it. They are now upset because they did not know that the site was closing. One blog that is still going strong is called Rebecca's Pocket. Rebecca Blood created the Website in 1999. She wrote about the history of blogs on the site. That article led to a book called "The Weblog Handbook". It has been translated into four languages so far. Ms. Blood says Rebecca's Pocket gets about 30,000 visitors a month. She writes about anything and everything--politics, culture and movies. She recently provided medical advice. And she wrote about how to prevent people from stealing money from on-line bank accounts. The reason why Rebecca's Pocket is still going strong is that _ . | [
"it was created by a woman.",
"it is about the history of blogs.",
"it provides useful information and advice",
"it has editions in at least four different languages"
] | null | C | |
mmlu_stem | mmlu_stem_18705 | Radio signal interruption sometimes causes a humming or buzzing sound. These sounds are most likely caused by | [
"balanced forces.",
"longitudinal waves.",
"gravitational forces.",
"electromagnetic waves."
] | null | D | |
mmlu_stem | mmlu_stem_14010 | Tigers are strong and dangerous animals. But now they are in danger. In the past, there were eight kinds of tigers in the world. But during the 20th century, only five were left. The number of Siberian tigers was about 300, but now it is less than 22. They're in danger of dying out. If the government does nothing, we won't be able to see them in ten to twenty years. In order to stop people from hunting and killing wild tigers, and in order to make wild tigers more, the World Wildlife Fund has started a program recently . China and twelve other countries joined it. However, it's not enough. Remember that nature is a food chain . If we hurt and kill too many wild deer and pigs, wild tigers will die out because of hunger . So the most important thing is to save the animals that tigers eat. In order to protect the wild tigers, we need call on more people to stop eating, hunting and killing wild animals. ,. During the 20th century, _ kinds of wild tigers died out. | [
"3",
"5",
"8",
"20"
] | null | A | |
mmlu_stem | mmlu_stem_4338 | A dog who chewed off his owner's infected toe while he was passed-out drunk has been called a lifesaver. Jerry Douthett had been out drinking when his dog Kiko bit off a large part if his big toe. His wife, Rosee, rushed him to hospital where tests showed the 48-year-old musician had dangerous high blood-sugar levels. Doctors told him his toe would have had to be cut off anyway. Mr Douthett said he had refused to get medical advice despite his toe being swollen for months. "I was hiding it from people, Rosee included," he said. "It smelled , and I look back now and realize every time we'd visit someone with a dog, their dog would smell all over my foot." The night before Mr Douthett had agreed to see a doctor, he passed out at home after going out drinking. He said, "I woke up and the dog was lying along side by foot. I said, 'Ah, there's blood everywhere.' I ran to the bathroom and started to scream." However, he believes Kiko could sense the disease coming from his big toe. "He's a hero," Mr Douthett said. "It wasn't an aggressive attack. He just ate the infection. He saved my life. He ate it. I mean, he must have eaten it, because we couldn't find it anywhere else in the house. I look down. There's blood all over, and my toe is gone." Before the operation, Mr Douthett asked a nurse, "Is there any chance I can get whatever's left of my toe, so I can give it to Kiko as a treat?" Kiko is still with the family but is under observation by authorities. .What did Mr Douthett think of his dog ? | [
"It was clever and brave.",
"It never attacked healthy people.",
"It was a cruel but helpful dog.",
"It was a dangerous dog in fact."
] | null | A | |
mmlu_stem | mmlu_stem_6881 | Frank is my good friend. We are in the same class. He is fourteen, one year older than me. His parents are both teachers in No 7 Middle School. Frank studies hard. His English and math are very good. He often helps other students with their English and math. Our teachers like him very much. We go to school together by bike in the morning. We have lunch at school. After school in the afternoon, we often play sports. We play soccer and baseball. In the evening, he does his homework at home. Sometimes he watches soccer games on TV. On Sundays, he goes out with his parents in his father's car. They play in the park and do sports there. Sometimes my father takes me there, too. We play sports together. We have a good time. When does Frank do his homework? | [
"In the evening",
"In the morning",
"In the afternoon",
"At noon."
] | null | A | |
mmlu_stem | mmlu_stem_21469 | as the amount of water received by a plant increases , that plant will usually | [
"form more vegatation",
"harden like rocks",
"start singing",
"fly to space"
] | null | A | |
mmlu_stem | mmlu_stem_20198 | From 2008 to 2018, the concentration of single carbon molecules bonded with two oxygen molecules present in the air has dramatically | [
"sharply declined",
"grown",
"decreased",
"polluted public opinion"
] | null | B | |
mmlu_stem | mmlu_stem_20280 | A piece of talc is rolled over on a black chalkboard and | [
"burns the board",
"wipes a spill",
"makes a streak",
"makes a dent"
] | null | C | |
mmlu_stem | mmlu_stem_7663 | SEE a cell phone cover that you like on Taobao? Forget about placing an order, paying the bill online and waiting for days for it to be delivered to you. In the near future, you'll be able to get it in minutes just by hitting "print" on your computer. You might find it hard to believe that you could actually "print" an object like you would a picture. But it is not that hard to understand how it would work. Just as a traditional printer sprays ink onto paper line by line, modern 3-D printers spread material onto a surface layer by layer, from the bottom to the top, gradually building up a shape. Instead of ink, the materials the 3-D printer uses are mainly plastic, resin and certain metals. The thinner each layer is --- from a millimeter to less than the width of a hair --- the smoother and finer the object will be. This may sound like a completely new technology, but the truth is that 3-D printing has been around since the late 1980s. Back then, it was barely affordable for most people, so few knew about it. Last year, though, saw a big change in the 3-D printing industry--- printers became much cheaper. For example, 10 years ago a desktop 3-D printer might have cost PS20,000 (200,000 yuan), while now they cost only about PS 1,000, according to the BBC. Taken out of the factory and introduced to more diverse and common uses, 3-D printing can create just about anything you can think of ---flutes , bikinis, jewelry, aircraft parts and even human organs. In fact, scientists from Cornell University in New York have just made an artificial ear using a 3-D printer, according to Science Daily. The fake ear looks and acts exactly like a natural one. However, as 3-D printing becomes more commonplace, it may bring about certain problems --- such as piracy. "Once you can download a coffee maker, or print out a new set of kitchen utensils on your personal 3-D printer, who will visit a retail store again?" an expert in 3-D printing told Forbes News. Even more frightening, what if anyone in the world could use a 3-D printer to print out a fully functioning gun? What was the big event happening in the 3-D printing industry last year? | [
"The 3-D printing technology was taken out ofthe factory.",
"The 3-D printer became more affordable forconsumers.",
"The 3-D printer was used for medical treatmentfor the first time.",
"3-D printing technology began to be used invarious fields."
] | null | B | |
mmlu_stem | mmlu_stem_14781 | When we have small cuts in the skin , something strange may happen. The cuts are able to heal themselves in a couple of days. How does this happen? Read on, and you will find out the secret. Every living thing on the earth is made up of cells . Cells grow and make new cells. Most cells are very small and we can't see them with our eyes. Different cells have different uses. Our skin cells are special ones. The cells on the outside of our skin are old dead cells. New skin cells are right under the outside. These are the living skin cells. They work for our bodies. They help protect our bodies and heal cuts. Our bodies make skin cells all the time. As the old cells fall off, new cells grow in the same place. Each person makes about 18 kg of skin cells during his or her life. Outside skin cells fit together closely with no _ between them. When you cut yourself, you can harm your skin cells. A small cut will not be harmful. Your skin will quickly heal itself by making new skin cells. How do skin cells work? First, the cells near the cut get bigger and move into the gap. Next, these bigger cells meet in the middle. They form a new layer of skin cells. Finally, new cells will grow until the gap disappears. In this way, your skin can grow and get well itself. How amazing the small cells are! Next time you have a cut, don't worry about it. Maybe in a few days, you will be surprised to find it healed. Which of the following is TRUE according to the passage? | [
"Each person can make 18 kg of skin cells every day.",
"Different cells have different uses in our bodies.",
"The skin cells have little work to do in the body.",
"Every living thing on the earth is made up of skin cells"
] | null | B | |
mmlu_stem | mmlu_stem_13290 | Mary likes dogs very much. She has a pug-dog. It is white. It has big eyes and ears. It is small but it is cute and beautiful. Every morning, the dog eats some bread and meat. They are the dog's favorite food. When Mary goes to school, the dog always waits for her at the gate. When she comes back home, the dog follows her here and there. When Mary does her homework, it lies near her feet. When Mary watches TV, the dog sits on the sofa near her. When Mary goes to bed, the dog lies its bed next to Mary's. in the evening, they often run and play in the yard . They are really good friends. ,. (1x5=5) Mary is a _ . | [
"student",
"teacher",
"doctor",
"actor"
] | null | A | |
mmlu_stem | mmlu_stem_17090 | Every morning my father buys a newspaper on his way to work. Every evening my mother looks through magazines at home. And every night, I look at the posters with photos of David Beckham and Yao Ming on my bedroom wall before I go to sleep. Can we imagine life without paper or print? Paper was first created about 2,000 years ago, and has been made from silk, cotton, bamboo, and, since the 19th century, from wood. People learned to write words on paper to make a book. But in those days, books could only be produced one at a time by hand. As a result, they were expensive and _ . And because there weren't many books, few people learned to read. Then printing was invented in China. When printing was developed greatly at the beginning of the 11th century, books could be produced more quickly and cheaply. As a result, more people learned to read. After that, knowledge and ideas spread quickly. Today information can be received online, downloaded from the Internet rather than found in books, and information can be kept on CD-ROMs or machines such as MP5 players. Computers are already used in classrooms, and newspapers and magazines can already be read online. So will books be replaced by computers one day? No, I don't think the Yao Ming poster on my bedroom wall will ever be replaced by a computer two meters high! What is the writer's opinion about books and computers'? | [
"People won't need books any more",
"Books won't be replaced by computers.",
"People prefer to find information in books.",
"Computers have already replaced books."
] | null | B | |
mmlu_stem | mmlu_stem_7717 | The Internet has got into all the fields of our life. We can study and work on it. We can find a job on it. We can communicate on it. We can treat friends on it. We can buy and sell on it. We can do almost everything on the Internet, and almost anywhere at any time. However, although the Internet provides services for us, it is silently getting our privacy to some degree. The services on most websites require our personal information. If we want to enjoy these services, we have to provide much of our information, including our names, sex, addresses, telephone numbers and sometimes bank accounts. Because weak network sometimes is unsafe, our information might be open, stolen or sold. Even sometimes _ will be used freely by others. Considering the above mentioned, you must pay attention to the safety of your information when using the Internet. First, when you need Internet service, you should always look through those big legal websites. Second, if the service requires important personal information, you should think twice before you type it in. Third, store your own important card key and don't tell others easily. What can we learn from the passage? | [
"Don't believe others if you don't know them.",
"Remember never use your ID Card on the Internet.",
"Never use the Internet in the future.",
"Pay attention to the safety of the information online."
] | null | D | |
mmlu_stem | mmlu_stem_5514 | The world is not coming to an end on December 21st, 2012, the US space agency announced to dispel widespread rumors fueled by the Internet and a new Hollywood movie. The latest big screen 2012 was based on stories according to the Mayan calendar.It showed that by the end of 2012, a Planet X will collide with the earth. Some websites accuse NASA of hiding the truth on the planet's existence, but the US space agency considered such stories as tricks."There is no basis in fact for these claims," NASA said in its website."If such a collision were real, scientists would have been tracking it for at least the last decade, and we would see _ with our eyes now.Obviously, it doesn't exist and there will be no threat to the earth in 2012," it insisted."After all, our planet has been getting along just well for more than four billion years," added NASA. There is another planet, Eris, floating in space.But the small planet will remain safely fixed in the outer solar system and it can come no closer than four billion miles to the earth, according to NASA. And even if the planets were to line up as some have forecast, the effect on our plant would be very little."And while comets and asteroids have always hit the earth, big hits are very rare," NASA noted.The last major collision was believed to be 65 million years ago, resulting the end of dinosaurs . "We are sure that there are no threatening asteroids as large as the one that killed the dinosaurs," the space agency said. We can conclude from the passage that _ . | [
"the film 2012 is well accepted in the science field",
"scientists have been tracking Planet X for over ten years",
"the earth will exist for more than four billion years",
"the rumors caused a panic among some people"
] | null | D | |
mmlu_stem | mmlu_stem_918 | A pharmaceutical company develops a new antibiotic to treat pneumonia. After limited testing, the researchers conclude that the antibiotic seems to be effective. How can the researchers strengthen their conclusions? | [
"Test the antibiotic on human volunteers.",
"Publish their results in a medical journal.",
"Ask an independent lab to retest the antibiotic.",
"Test the effectiveness of the antibiotic at killing other bacteria."
] | null | C | |
mmlu_stem | mmlu_stem_22022 | Gills are used by what for breathing water? | [
"marlins",
"eagles",
"zebras",
"goats"
] | null | A | |
mmlu_stem | mmlu_stem_21398 | If a frog is a baby, then it has | [
"zero legs",
"four legs",
"two legs",
"zero parents"
] | null | A | |
mmlu_stem | mmlu_stem_20698 | A person wanting to signal with light could redirect sunlight with | [
"a shoe",
"a steel dish",
"a teabag",
"a cat"
] | null | B | |
mmlu_stem | mmlu_stem_16666 | Two Chinese spacecrafts successfully completed China's first space docking early November 3, 2011, which has taken the country a step closer to building its own space station. Nearly two days after its launch, the unmanned spacecraftShenzhou VIIIdocked with the space lab module Tiangong I more than 343 km above the earth surface.Shenzhou VIIIandTiangong Itook apart after flying together for 12 days. On the 14th of November, the two spacecrafts finished the second docking. ThenShenzhou VIIIparted fromTiangong Iagain and returned to the earth safely on the 17th.Tiangong Iis still traveling around the earth in the space, waiting for the arrival ofShenzhou IXandXand so on in the near future. _ marked another great leap for China's space program and made China the third country in the world, after the United States and Russia, to master the space docking technique . The world's first space docking was achieved in 1966, when the manned U.S, spacecraft Gemini 8 (8) docked with an unmanned Agena Target Vehicle . Space docking is necessary to explore space beyond Earth's orbit. "The capability increases China's ability to act independently in space, as well as its ability to work together with others," said Gregory Kulacki, a U.S. space scientist and senior analyst. "With the success of its first space docking, China is now equipped with the basic technology and ability required for the construction of a space station," said Zhou Jianping, chief designer of China's manned space program." The country is on its way to building a permanent manned space station around 2020." What can we learn from the passage? | [
"Tiangong I will fly in the space for 12 days.",
"The first space docking of the world was achieved in 1966, by Russians.",
"Without space docking technique people can't explore space beyond Earth's orbit.",
"The U.S.A helped China achieve the first space docking."
] | null | C | |
mmlu_stem | mmlu_stem_17657 | If a species is no longer able to reproduce, it will | [
"adapt to its environment",
"become immune to disease",
"become extinct",
"increase its population"
] | null | C | |
mmlu_stem | mmlu_stem_11470 | Yawning sends out certain messages -either "Oh,this movie is so boring" or "I probably need to get some sleep". But did you know that a yawn can also help your brain to cool down when it is overheated? A new study, led by a research team at Princeton University, has indicated that yawning could be the brain's natural way of regulating temperature. People yawn more often when the temperature outdoors is lower than their body temperature but are less likely to yawn when it is hotter outdoors, according to Sciencedaily. com. The research team did an experiment on 160 people, 80 in summer and 80 in winter, to examine how often they yawned at different air temperatures. The study found that people yawned more often in winter than in summer. Scientists say that when the air temperature is lower outside the body, there is heat exchange between the overheated brain and the cool air. But when the air temperature is higher than or equal to the body, people are less likely to yawn because the hot air they breathe in will make the brain even hotter. When people yawn, their jaw is also stretched,which increases blood flow and may also help cool the brain The study showed that the amount someone yawned could be related to the amount of time they spent outside. The longer they spent outside in summer, the less they yawned. Nearly 40 percent of participants yawned within their first five minutes outside, but after that the percentage was reduced to less than 10 percent. However, the result was the opposite in winter. The number of people who yawned increased when they spent more than five minutes outdoors. But the change was only slight compared to summertime. According to Gallup, this is the first report to show that yawning frequencies change depending on season. This could help us to understand better the way our brains work. It may also help us understand the reason why frequent yawning can sometimes be a sign of brain disease. The purpose of the experiment is _ . | [
"to find the frequency of people's yawning",
"to indicate brain can regulate temperature naturally",
"to prove people yawn in winter and in summer equally",
"to show the real reason why people yawn"
] | null | A | |
mmlu_stem | mmlu_stem_12513 | This large flat is on the top floor of a five-story modern building in a quiet part of the city. There are two schools, a restaurant and several shopping centres nearby. A bus stop is only one hundred metres away. The flat has got a large living room , a dining room,a modern kitchen, one large bedroom and two small bedrooms. There is a bedroom with a shower, a sink and a toilet. The flat has also got a small storeroom and there is a large doorway. The price of it is $245,600 without the garage . The price of the garage is $34,560. There are _ bedrooms in the flat. | [
"one",
"two",
"three",
"four"
] | null | C | |
mmlu_stem | mmlu_stem_3304 | Shlander is a man from space. He thinks the people and things on the earth are very strange. He is now writing a letter to his friend at home. Here is part of his letter. Read it and answer the questions. Now I am in a strange world. It is very nice. There are many new things here. There are many earth monsters here, too. The earth monsters look very funny. They have just one head, two arms and two legs. They have thin black strings on their heads. Some earth monsters have brown or yellow strings. The earth monsters have a hole in their faces. Every day, they put nice things and balls from the trees into the hole. They put water into the hole, too. The earth monsters do not walk very fast. They move from place to place in tin boxes. At night, the earth monsters like to look at a square window box. This box has very small earth monsters in it. Shlander thinks man on the earth is _ . | [
"a monkey",
"an earth monster",
"a tin box",
"a strange world"
] | null | B | |
mmlu_stem | mmlu_stem_1704 | A rabbit was hopping around, following all the smells he could smell. He had a great nose, smelling carrots, bushes, flowers, and other animals. He smelled melons and he smelled a dish of ice cream. Rabbits don't like ice cream, so he moved to the flowers faster. And he didn't really like to snack on melons either. He saw friends, the duckling and the mother duck, but he was moving too fast to get to the flowers. He could smell the flowers from a long way away. He kept hopping to reach them, faster and faster. One hop, two hops, three hops. On his third hop he always bounced a little higher. He finally smelled the flowers close, so he hopped a little bit faster. The flowers were in sight. He went up to them and smelled longer and harder than ever before. A wonderful smell at last. How many hops until the rabbit bounced higher? | [
"Every hop was higher than the last",
"Four",
"Three",
"Two"
] | null | C | |
mmlu_stem | mmlu_stem_3771 | Squirrels often communicate with whistles, chirps and chucks, which sound like the word "chuck". Whistles and chirps are like the sounds that many birds make.Now scientists have translated some of their squirrel-speak. Hare, a professor of zoology at the University of Maniloha in Winnipeg, and his team managed to record squirrels' alarm calls.The researchers studied the sounds and then played them back to 60 wild squirrels, which the scientists approached individually with a video recorder to capture their reponses.Some squirrels lifted their heads up and became.Alert .Creatures that were more frightened simply ran for their lives and dived into caves. "In effect then, whistles that mix with chucks say 'there's an enemy of average threat that's here', and whistles without chucks say 'there's an enemy of seemingly average threat around here somewhere', while pure chirps say, 'I'm hiding here because there's an immediate danger.' " Hare told.Discovery News. Hare and some other researchers believe such sounds arc part of an advanced language that develops just as all other communication systems. Although squirrels risk their lives when they call out to warn others of threats, other squirrels might admire this behaviour, thus increasingly the caller's social status, like humans who look up to heroes. Hare added that other animals, such as birds, probably understand at least some squirrel language, since they also may benefit from the alarm calls. In fact, another Canadian study found that deep-voiced, black-capped chickadees have their own language too.According to certain research, there are a lot of tidings in chickadees' calls, such as directing fellows' activities, keeping in contact between mates, and raising alarms. While chickadees and other birds are often welcomed into gardens by homeowners, squirrels are frequently viewed as pests . Hare wishes a greater understanding of the complex social lives and communication systems of squirrels will provide "hope that humans will gain a greater appreciation and stop doing harm to these animals". What can be learned from this text? | [
"Squirrels communicate with cach other as humans do.",
"Some squirrels understand the recorded alarm calls.",
"Other animals also well understand the language of squirrels.",
"Birds such as chickadees don't have their own language."
] | null | B | |
mmlu_stem | mmlu_stem_21127 | if a spoon was placed outside under our closest star, what could happen to it? | [
"it would shrink smaller",
"it would feel warmer to touch",
"it would freeze over",
"it would become a gas"
] | null | B | |
mmlu_stem | mmlu_stem_14912 | Jane is a school girl. She is twelve. She studies at a middle school. She is in Grade Seven. She is a good girl. Jane gets up at seven in the morning. Then she has her breakfast. For breakfast she has eggs and a cup of milk. She doesn't have tea for breakfast. After breakfast Jane goes to school. At twelve she comes home from school. She has lunch with her mother. For lunch she has hamburgers and salad. She likes salad, but she doesn't like hamburgers. At seven she has supper with her father and mother. They have chicken and vegetables. Her father likes chicken, but Jane doesn't. Jane has _ for breakfast. | [
"eggs and a cup of milk",
"eggs and tea",
"tea and milk",
"vegetables"
] | null | A | |
mmlu_stem | mmlu_stem_20415 | You can recharge your iPhone by using | [
"ice cubes",
"money",
"wind",
"frozen apple farts"
] | null | C | |
mmlu_stem | mmlu_stem_7567 | There are more than 100 million cars in the United States. An ordinary car gets less than 15 miles from each gallon of gas. It travels about 10,000 miles each year. In that time, it uses about 650 gallons of gas. In all , automobiles use up some 70 billion gallons of gas a year. That comes out to be four-and-a-half million barrels a day. The importance of saving gas, then, cannot be stressed too much. Let's say, the fuel used by each car could be cut back just 15 percent. This could be done by making fewer trips each day. It could be done by keeping the automobiles in good shape. It could be done through better driving habits. If these were done, the nation's use of fuel would fall by close to two-thirds of a million barrels per day. Everyone can help to save gas. One way is to ride buses. Some could walk to work. Others could ride their bikes. Another way is to share a ride. People could share cars. About one-third of all cars are used for going to and from work. You can go shopping with a friend from time to time. If two people use a car instead of two, they all save. Driving stress would be less, too, with fewer cars on the road. The savings on gas around the nation would come to more than one-half million barrels a day. Still another way to save is by cutting out trips one does not need to take. Can you find one car trip per week that could be done by telephone? Can you combine trips? If each car travelled 10 miles less each week, they could save three-and-a-half billion gallons of gas a year. This comes to nearly 5 percent of the total passenger cars demand for gas. The way people drive decides how much fuel they save. Careful drivers may get 20 percent more miles per gallon than ordinary drivers. They obey the 55-mile-per-hour speed limit. If just one gallon of gas were saved each week for each car in the country, a total of five-and-a-half billion gallons could be saved a year. According to the passage, it is possible to save five percent of the total passenger cars demand for gas each year, if _ . | [
"people all share car-riding instead of owning their own cars",
"all the cars cut off one trip of 10 miles each week",
"two people go shopping in a car from time to time",
"people use telephones instead of riding cars"
] | null | B | |
mmlu_stem | mmlu_stem_2003 | Which of the following is the main role of flowers found on most flowering plants? | [
"to take in air",
"to produce seeds",
"to absorb nutrients",
"to protect the stem"
] | null | B | |
mmlu_stem | mmlu_stem_10461 | Such chronic diseases as heart disease, stroke, cancer and lung disorders are the most leading causes of death in the world. Yet health experts say these conditions are often the most preventable. The World Health Organization (WHO) points out chronic diseases lead to about 17 million early deaths each year. The United Nations (UN) agency expects more than 380 million people to die of chronic diseases by 2015. About 80% of the deaths will happen in developing nations. Chronic diseases now cause two-thirds of all deaths in the Asia-Pacific area. In ten years it could be almost three-fourths. People are getting sick in their most economically productive years. In fact, chronic diseases are killing more middle-aged people in poorer countries than in richer ones. The WHO estimates that chronic diseases will cost China alone more than 500,000 million dollars in the next ten years. That estimate represents the costs of medical treatment and lost productivity. Russia and India are also expected to face huge economic losses. According to a WHO report, deaths from chronic diseases have increased largely as the result of economic gains in many countries. Until recently infectious and parasitic diseases have been the main killers in Asia and the Pacific but they are no longer the major cause of death in most countries. As many as 80% of the deaths from chronic diseases could be prevented, health officials say. An important tool for governments is to limit the marketing of alcohol and tobacco to young people. Also, more programs are needed to urge healthy eating and more physical activity. The UN aims to reduce chronic-disease deaths by 2% each year by international action through 2015, that's to say, 36 million lives could be saved, including 25 million in Asia and the Pacific. According to the passage, chronic diseases _ . | [
"can be ignored",
"can be prevented",
"will disappear",
"are all deadly"
] | null | B | |
mmlu_stem | mmlu_stem_74 | Signs in many stores and restaurants warn that microwaves are in use. What is the main reason for this warning? | [
"Some people do not like food cooked in microwave ovens.",
"Microwaves sometimes affect people's sense of sight.",
"Microwaves sometimes cause hair or teeth to fall out.",
"Some people have pacemakers that may be affected by microwaves."
] | null | D |
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