dataset string | id string | question string | choices list | rationale string | answer string | subject string |
|---|---|---|---|---|---|---|
mmlu_stem | mmlu_stem_1282 | How will a thriving grassland ecosystem most likely be affected by a drought? | [
"Plant respiration will increase.",
"Animals will be forced to migrate.",
"Soil nutrients will be enriched.",
"Natural succession will cease."
] | null | B | |
mmlu_stem | mmlu_stem_3067 | According to a survey, only 4% of the people in the world are left-handed. Why? One theory centers on the two halves of the brain. For example, the left half and the right half, each of which functions differently. Medical science believes that the left half of the brain dominates over the right half. The foundation of this theory is the fact that nerves from the brain cross over at neck-level to the opposite side of the body, and nerves from the other side of the brain reciprocate . The end result is that the opposite sides of the body are controlled by the opposite sides of the brain. The dominant left half of the brain, which kindly supplies the right half of the body, theoretically makes it more skillful in reading, writing, speaking, and working, and makes most people right-handed. Lefties, however, whose right half of the brain dominates, work best with the left side of their bodies. Theory number two focuses on the _ nature of the body. Examples of the asymmetry, which flows from head to toe, are that the right side of our faces differs slightly from the left, that our legs differ in strength, or that our feet vary in size. One aspect of this asymmetry is that for most people the right hand is stronger than the left. There is no doubt that all exist in a "right-handed society", which produces most basics, including scissors, doorknobs, locks, screwdrivers, automobiles, buttons on clothing, and musical instruments for the 96%. Left-handed people make up for the unfairness by being members of an elite society, which includes many of the greatest geniuses, including Michelangelo and Leonardo da Vinci. What's the best title for the passage? | [
"Which proves to be the better way to live, right-handed or left-handed?",
"How do left-handed people differ from right-handed ones?",
"Why are some people left-handed?",
"Are left-handed people equally treated in society?"
] | null | C | |
mmlu_stem | mmlu_stem_3925 | Which animal has the fastest snapping jaw ? If you're guessing a shark or perhaps a larger animal, you'll have to think smaller. The trapjaw ant, which lives in Central and South America, moves its mouth parts at 35 to 63 meters per second. Another way to think about this is that the ant's jaws close at 125 to 233 kilometers per hour. That's 2, 300 times faster than the blink of an eye. Scientists were able to measure the amazing jaw speed using highspeed video techniques. Sheila Patek, a biologist, says the key is that the jaws have a springy system, which is critical in getting explosive speeds. Consider a bow and arrow. If you try to throw an arrow with your arm, it won't go very far. If you use a bow, elastic energy stored in the bow is released almost instantly when you release the arrow with your finger or a latch. The combination of the springy bow and latch mechanism is what makes the arrow zoom through the air. Maybe even more amazing than how fast these ants grab food or even enemies is how they use this same energy to move. As the ant closes its jaws, it uses them to push off the ground--all faster than the eye can see without slow motion video. A snap of the jaw can send an ant up to 8.3 centimeters into the air. That's like someone who is 1.7 meters jumping 13 meters high! Not only can they quickly escape from enemies, but often a group of ants will start jumping all at once. It would be hard for their enemies to grab just one. People have suspected the ants used their jaws to jump for over a century, but could only prove it with today's modern video equipment. The passage uses "a bow and arrow" as an example to show _ . | [
"how an arrow gets so much energy to fly",
"why the trapjaw ants have springy system",
"why the trapjaw ants jaws move so fast",
"how a bow and arrow works"
] | null | C | |
mmlu_stem | mmlu_stem_1458 | James was a nice old man who lived by himself. Every day he would walk down the road by his house and say hello to everyone. It was fun saying hello to everyone but he felt lonely sometimes. He wanted a pet to take care of. One day as he was walking down the road a little brown and spotted puppy came up to him and wanted James to pet him. James reached down and petted the puppy and smiled. James hoped to see the puppy again. Many days later James went for a walk again. He thought to himself, "I guess I won't ever see the brown puppy again. I hoped to see him again." A nice young lady said to James, "Would you like a puppy?" James said, "I would like a puppy that was like the one I petted before." The lady smiled. She was holding the little brown and spotted puppy. She told James that she found the little puppy in the woods. She said that the little puppy did not have a family. James said happily, "I would love to give the puppy a home!" So James grabbed the little brown and spotted puppy and took him home. James and the little brown puppy became great friends. James named him Spotty. How many times did James meet the puppy before he took him home? | [
"seven times",
"five times",
"two times",
"three times"
] | null | C | |
mmlu_stem | mmlu_stem_13078 | E-book is short for electronic( ) book. It is usually read on personal computers. Some mobile phones can also be used to read e-books. Earlier e-books were written for a specific group of readers and were about only a few subjects. With the development of the internet, knowledge and answers to a lot of questions mainly come from e-books. This is why the e-book business is increasing quickly E-books have many advantages. First, they save time. We don't need to go to a bookstore to buy books, besides, we can find the topic we want to know about on the Internet, and then we can quickly get many e-books on similar topics. Second, e-books save money. Some e-books cost a little money, and there are millions of e-books on the Internet that we can get for free. Third, more trees are saved because e-books don't need to be printed on paper. Fourth, e-books make reading more convenient. You can carry a whole library of hundreds of books with you in a small computer or any e-book reader without worrying about their weight. But e-books have certain disadvantages. They need a personal computer or an e-book reader and the information can be lost if its file format is not supported or changed in the reader's computer. However, e-books provide us with a new way of reading. That is good. ,. Why is the e-book business increasing quickly? Because _ . | [
"earlier e-books are about only a few subjects.",
"people don't like to read any paper books any more.",
"most e-books have been written for a specific group of readers.",
"the development of the Internet makes e-books more useful."
] | null | D | |
mmlu_stem | mmlu_stem_16401 | We have to accept the truth: Sometimes, we just want to shout out loud. For example, we all have days like this: our dog has made a mess on the floor we just cleaned, or our friend called to tell us he or she couldn't come at the last minute when we had cooked dinner for him or her. We may be really angry but we tried to bear things like those. According to ancient Chinese wisdom, we should shout in a loud voice instead of keeping silent. In fact, it's good for our health. "Chinese people have passed on the practice from ancient times to now as a part of traditional medicine," said Mrs. Li, a 60-year-old woman from Hangzhou. "My parents taught me to do this. It's a part of our folk culture. " Mrs. Li is a member of a group of people who love shouting. Each morning, she and some of her friends climb to the top of a hill and let out loud shouts before starting their daily exercise. They believe that shouting is good exercise for their lungs and it brings them a lot of fun. "Sometimes I shout out and other shout back," said Mrs. Gu, another shouting lover. "It makes you happy. You laugh and then you feel very comfortable. " Dr. Peter Calafiura, an American doctor, agrees that shouting can have a positive influence on people's health. So, next time you start your morning run, why not try to shout out first? It will make you healthier. What does Dr. Peter Calafiura think of shouting? | [
"It's great furl.",
"It's good for people's health.",
"It's easy to learn.",
"It's good exercise especially for kids."
] | null | B | |
mmlu_stem | mmlu_stem_3708 | A new study says that birds living in big cities sing shorter, faster songs that are higher-pitched than those sung by their brothers in the forests. The researchers think that the birds adjust their songs to allow themselves to be heard over the noises of the city, especially the low traffic noise. To study how urban birds song, Hans Slabbekoorn and Ardie den Bore, biologists at the University of Leiden in Netherlands, travelled around Europe and recorded bird songs in ten major cities and in nearby forests. The species they focused on, the great tit , is widespread across Eurasia and one of the few types of birds that _ in big cities. Singing is crucial for males, which use their songs to attract mates and mark out their territory. The changing songs could play a role in eventually causing the city birds and the forest dwellers to evolve into separate species. The findings could also help explain why usually only a few bird species thrive in cities. By contrast, many more bird species tend to be found in forests and other undeveloped habitats. Studies like this could eventually help researchers predict how urbanization will affect birds, using this knowledge could help urban planners design more pleasant city environments, study co-author Slabbe-koorn said. "You can make a city much more livable if you pay attention to where the noise goes and where the people go," he said. "It would be easy to fit the birds into those models." Then cities wouldn't be strictly for the people, but also for the birds. What is NOT the effect that studies of birds' songs have? | [
"Predicting how course of the city's expanding will affect birds.",
"Helping the city planners design more pleasant city environments.",
"Making cities more livable for both the birds and people.",
"Driving the urban birds back to the forest."
] | null | D | |
mmlu_stem | mmlu_stem_17837 | What happens to water molecules during the boiling process? | [
"They move faster and move farther apart as they absorb heat.",
"They move faster and remain close together as they absorb heat.",
"They move more slowly but move farther apart as they lose heat.",
"They move faster and move farther apart as they lose heat."
] | null | A | |
mmlu_stem | mmlu_stem_5395 | What Theresa Loe is doing proves that a large farm isn't _ for a modern grow-your-own lifestyle. On a mere 1/10 of an acre in Los Angeles, Loe and her family grow, can and preserve much of the food they consume. Loe is a master food preserver, gardener and canning expert. She also operates a website, where she shares her tips and recipes, with the goal of demonstrating that every has the ability to control what's on their plate. Loe initially went to school to become an engineer, but she quickly learned that her enthusiasm was mainly about growing and preparing her own food. "I got into cooking my own food and started growing my own herbs and foods for that fresh flavor,"she said. Engineer by day, Loe learned cooking at night school. She ultimately purchased a small piece of land with her husband and began growing their own foods. "I teach people how to live farm-fresh without a farm," Loe said. Through her website Loe emphasizes that "anybody can do this anywhere." Got an apartment with a balcony ? Plant some herbs. A window? Perfect spot for growing. Start with herbs, she recommends, because "they're very forgiving." Just a little of the herbs "can take your regular cooking to a whole new level," she added. "I think it's a great place to start." "Then? Try growing something from a seed, she said, like a tomato or some tea." Canning is a natural extension of the planting she does. With every planted food. Loe noted, there's a moment when it's bursting with its absolute peak flavor. "I try and keep it in a time capsule in a canning jar," Loe said. "Canning for me is about knowing what's in your food, knowing where it comes from." In addition to being more in touch with the food she's eating, another joy comes from passing this knowledge and this desire for good food to her children: "Influencing them and telling them your opinion on not only being careful what we eat but understanding _ ," she said, "that if we don't take care of the earth, no will." According to Loe, what is the benefit of canning her planted foods? | [
"It can preserve their best flavor",
"It can promote her online sales",
"It can better her cooking skills",
"It can improve their nutrition"
] | null | A | |
mmlu_stem | mmlu_stem_3235 | Cats like climbing trees and there are logical reasons behind this behavior. Interestingly, due to some of their physical features, cats will meet trouble getting down from the trees after climbing up, which may seem unusual. There are several reasons why cats climb trees, mostly to do with defensive purposes. Cats, as predators , like to understand their environment well. As they are small animals, their scope of vision is considerably smaller. Cats often climb trees to get a better view of their surroundings to help them see any potential dangers. While cats are predators, they are also easy to get attacked from larger animals, such as dogs or even other cats. A tree often provides a safe hiding place. In the wild, cars climb up trees to give them a resting or napping place that is out of predators' range. It also helps disguise their presence. Some cats may climb trees for fun, on occasion, or possibly to work on improving their climbing abilities. Small cats frequently test out their claw skills by trying to climb up anything and everything, from bookcases to trees to a person's leg. Climbing practice is good for cats; it can improve their strength and flexibility and teach them an important defensive skill. If a cat has gotten up a tree and cannot get down, the owner may wonder why its remarkable climbing abilities only work in one direction. A cat's claws curve inward, allowing it to grip onto surfaces while going up head first. Unfortunately, this useful climbing curve does nothing to help the animal get back down again. Eventually, most trapped cats will either jump out of the tree or realize that they can get down by going tail first. Either way, a cat up a tree is usually nothing to worry about; they are intelligent animals and will figure out how to get down sooner or later. Why do cats have trouble getting down from a tree? | [
"They are afraid of height.",
"They are easy to get lost in a tree.",
"They don't know how to jump off a tree.",
"Their climbing ability doesn't help when climbing down."
] | null | D | |
mmlu_stem | mmlu_stem_22468 | What are predators? | [
"herbivores",
"plant eaters",
"meat devourers",
"peaceful"
] | null | C | |
mmlu_stem | mmlu_stem_20796 | If a plant is in an environment with a lot of oxygen, and then oxygen levels very slightly drop, the plant will | [
"understand",
"sour",
"calibrate",
"pray"
] | null | C | |
mmlu_stem | mmlu_stem_13125 | The students were having their chemistry class. Miss Li was telling the children what water was like. After that, she asked her students, "What's water?" No one spoke for a few minutes.Miss Li asked again,"Why don't you answer my question?Didn't I tell you what water is like?" Just then a boy put up his hand and said,"Miss Li,you told us that water has no color and no smell.But where to find such kind of water?The water in the river behind my house is always black and it has a bad smell."Most of the children agreed With him. "I'm sorry,children."said the teacher,"Our water is getting dirtier and dirtier.That's a problem". The students were having their _ class. | [
"English",
"Chinese",
"chemistry",
"math"
] | null | C | |
mmlu_stem | mmlu_stem_15923 | It is said that people born on different dates have different characteristics. For example, people who were born between March 21 and April 20 are likely to be active and strong. They like power and enjoy adventures. People who were born between April 21 and May 21 are likely to learn more slowly, but they can remember what they learn well. They love children and usually have many friends. People who were born between May 22 and June 21 are bright and humorous. They like to talk and enjoy wearing fine clothes. People who were born between June 22 and July 22 think deeply. They would rather hide their feelings than express them. People who were born between July 23 and August 22 are interested in many subjects and it is interesting to hear them talk. People who were born between August 23 and September 22 are said to be calm and thoughtful. They like to read and often become successful scientists. If you have free time, you can read about star signs to see if your characteristics match your birth date. People who were born between March 21 and April 20 are _ . | [
"patient",
"modest",
"energetic",
"kind"
] | null | C | |
mmlu_stem | mmlu_stem_833 | A student has a pink eraser on her desk. Which property shows that the eraser is a solid? | [
"Its color stays the same when it is broken in half.",
"Its temperature goes up when it is rubbed on paper.",
"Its shape is definite when it is placed in a new spot.",
"Its size changes when it is used to remove pencil marks."
] | null | C | |
mmlu_stem | mmlu_stem_21086 | A mad scientist is spawning a Xenomorph and wants to know how many acid dripping fangs it'll have. What is the best tool at his disposal to acquire this information? | [
"a Punnett chart",
"square Ouija board",
"square plastic beaker",
"today's weather forecast"
] | null | A | |
mmlu_stem | mmlu_stem_2032 | Which trait do children most likely inherit from their parents? | [
"shape of earlobes",
"musical ability",
"personality",
"language"
] | null | A | |
mmlu_stem | mmlu_stem_11846 | Nick Vujicic Imagine getting through your busy day without hands or legs.Picture your life without the ability to walk,care for your basic needs,or even hug those you love.Meet Nicholas Vujicic.Without any medical explanation or warning,Nick was born in 1982inMelbourne,Australia,without arms and legs. The early days were difficult.Throughout his childhood,Nick not only dealt with the typical challenges of school and adolescence,but he also struggled with depression and loneliness.Nick constantly wondered why he was different from all the other kids.He questioned the purpose of life. After experiencing many difficulties,Vujicic eventually began to realize that his experiences were inspiring to many people and began to be thankful for being alive.A key turning point in his life was when his mother showed him a newspaper article about a man dealing with a severe disability.This led him to realise he was not the only one with major struggles.When he was seventeen,he started to give talks.He has traveled around the world,sharing his story with millions,sometimes in stadiums full of people,speaking to a range of various groups such as students,teachers,young people,business professionals and so on.He has visited more than 50countries and given thousands of talks.Now he is an encouraging speaker with TED. Vujicic promotes his work through television shows and through his writing.His first book,Life Without Limits:Inspiration for a Ridiculously Good Life,was published by Random House in 2010.He markets a motivational DVD,Life's Greater Purpose,a short documentary filmed in 2005.He markets a DVD for young people titled No Arms,No Legs,No Worries!In March 2008,Vujicic was interviewed by Bob Cummings for the 20/20 American television show. According to Nick,the victory over his struggles,as well as his strength and passion for life today,can be owning to the power of hope.His family,friends and the many people he has met along the journey have inspired him to carry on,as well.Today this energetic young gentle man has achieved more than most people achieve in a lifetime. What's wrong with Nick when he was born? | [
"He had no arms or legs.",
"He was born with heart disease.",
"He was deaf and couldn't speak.",
"He needed an operation to stay alive"
] | null | A | |
mmlu_stem | mmlu_stem_22133 | Which of these objects would attract a magnet? | [
"a door handle",
"a light bulb",
"a pillow",
"a baseball"
] | null | A | |
mmlu_stem | mmlu_stem_7867 | East Hampton Fine Arts Festival Date: July 4-6, 2010 Time: 10:00 am-6:00 pm East Hampton Fine Arts Festival features (...)America's top artists and is one of the highest quality juried show on Long Island. Learn about their inspiration and skills. The Festival offers a full range of arts, including painting, photography, glass, and more. $9.00 Adults / $7.00 Seniors / $4.00 Students / Free for museum members and children under six Where: Montauk Highway (Rt.27), Amagansett, NY 631-421-1590 Winzy Instant Winner Sweepstakes Winzy is a search engine where you can win free prizes -- every search on Winzy is a chance to win immediately! Just use Winzy to search the Web and you will be reminded if you have won an instant prize. Prize: Prizes vary each month -- For example, current prizes include: Apple iPod Nano, Apple iPod Shuffle, $25 Gift Certificate for Amazon.com, $10 Gift Certificate for Amazon.com Female Babysitter Wanted Location: Johannesburg Female babysitter wanted for one child aged 11 years for the following position: Mon-Fri: Fetch child from school (Benmore, Sandton) at 3:30 pm, drop off at my work or drop off at home (Florida Hills) and wait for me to come home at about 5 pm; Babysit for 3-6 hours every alternative week / weekend (Florida Hills)--must be flexible. Must have a driver's license. Coastlife Adventures Learn to surf on soft surfboards on the NSW South Coast. Surf lessons from beginners to advanced with qualified surf instructors and lifesavers. A variety of surf packages are available to suit everyone. Coastlife is famous for its new instructional method and high quality equipment. Surf classes operate daily on beaches between Tathra, Pambula and Merimbula. The beaches we teach on are rated as the safest in the area by Surf Lifesaving Australia. Tel: 02-6494-1122 If your grandparents take you and your sister aged 5 to the arts show after school, you should pay _ . | [
"$29",
"$22",
"$20",
"$18"
] | null | D | |
mmlu_stem | mmlu_stem_16087 | The moon looks bigger than the stars at night. But in fact, it is smaller than any of them. The moon looks big to us, because it is closer to us than any star. The moon goes around the earth. It makes one trip about four weeks. The moon is a round ball and looks beautiful. Don't you think so? Now people know quite a lot about the moon. There is no air or water on the moon so there are not any trees or animals, or people on the moon. The moon gets its light from the sun, but some places on the moon are quite dark. Then days on the moon get hotter than boiling water. The nights get colder than the North Pole on the earth. People know quite _ about the moon now. | [
"a few",
"a lot",
"little",
"some"
] | null | B | |
mmlu_stem | mmlu_stem_19644 | How can you safely look at a solar eclipse? | [
"mirror",
"pinhole onto a screen",
"look directly at it",
"you can't look safely at a solar eclipse."
] | null | B | |
mmlu_stem | mmlu_stem_22084 | An example of creating an alternative fuel is turning what material into fuel? | [
"sand",
"mineral",
"vegetation",
"rocks"
] | null | C | |
mmlu_stem | mmlu_stem_10267 | On October 31st, 2009, Chinese famous scientist Qian Xuesen, died in Beijing when he was 98 years old. He is famous as "the country's father of space technology and king of rocketry". Qian was born in 1911 in Hangzhou. He left for the United States after winning a scholarship to graduate school in 1936. He studied at the Massachusetts Institute of Technology and later at the California Institute of Technology. Qian began his career in the US and was regarded as one of the brightest minds in the new field of aeronautics before returning to China in 1955. After he returned, Qian set up the first missile and rocket research institute of China. The institute later helped start Chinese space program. He led the development of China's first nuclear-armed ballistic missile and worked on its first satellite. He retired in the year before Chinese manned space program was launched in 1992. But his research formed the basis for the Long March CZ -2F rocket that carried astronaut Yang Liwei into orbit in 2003. In August, 2009, Chinese Premier Wen Jiabao visited Qian and _ him for devoting his life to Chinese defense technologies. Qian told him, "I'm trying to live to be 100 years old". Which of the following is TRUE according to the passage? | [
"Qian was born in 1936 in Hangzhou.",
"Qian began his career in China.",
"The long March CZ-2Frocket carried YangLiwei into orbit in 2009.",
"Wen Jiabao visited QianXuesen in August 2009."
] | null | D | |
mmlu_stem | mmlu_stem_12570 | Mr. Green has a small garden in front of his house. There are lots of flowers in it. But he has only a few trees. His neighbor Mr. Black has a garden, too. Mr. Black's garden is smaller than Mr. Green 's garden. He has fewer flowers than Mr Green but more trees. Mr. Brown is Mr. Green's another neighbour. Mr. Brown's garden is the smallest one of the three. He has the fewest flowers of them all, but the weeds in his garden are the tallest. There is always a lot of work to do in his garden, but Mr. Brown doesn't have enough time to work in his garden, so his garden is the worst. Mr. Green's garden is _ than Mr. Black's garden. | [
"better",
"worse",
"bigger",
"smaller"
] | null | C | |
mmlu_stem | mmlu_stem_17167 | Felicia investigated whether water color affected how fast the water heated in sunlight. She poured tap water into five beakers and placed food coloring in four out of the five beakers. Felicia then used a thermometer to measure the temperature of the water in each of the beakers. Which of these was used as control in her investigation? | [
"mixing the food coloring in water",
"testing the beaker of uncolored tap water",
"using the same amount of water in each trial",
"testing the colored water samples at different times"
] | null | B | |
mmlu_stem | mmlu_stem_1406 | Which adaptation often helps an animal attract a mate? | [
"hibernation",
"camouflage",
"coloration",
"migration"
] | null | C | |
mmlu_stem | mmlu_stem_1963 | Which of these animals has a young form that looks the most like the adult form? | [
"moth",
"human",
"frog",
"butterfly"
] | null | B | |
mmlu_stem | mmlu_stem_12502 | Hi!I'm Lucy. I am a student in Class 5,Grade 7.I have a big schoolbag. It is blue and red. The price is Y=88.1.have a nice pencil box in it. It is Y=10.Its color is white. I bought it in a store. There are four pencils and one pen. Each pencil is Y=1 and the pen is Y=12.My eraser is yellow. The price is Y=2.My ruler is orange and very long. I like them very much. I study very hard. How much are my pencils? | [
"Y=One.",
"Y=Two.",
"Y=Four.",
"Y=Ten."
] | null | C | |
mmlu_stem | mmlu_stem_455 | Ms. Bristol measured the mass of a closed beaker containing several ice cubes. The mass was 100 g. An hour later, after the ice cubes had melted, Ms. Bristol measured the mass of the beaker again. What was the mass of the beaker of water the second time? | [
"50 g",
"75 g",
"100 g",
"125 g"
] | null | C | |
mmlu_stem | mmlu_stem_20784 | If a thing has a certain amount of itself, then it can be described using | [
"that smell",
"that color",
"that volume",
"that taste"
] | null | C | |
mmlu_stem | mmlu_stem_133 | Which of the following changes occurs as a solid is heated? | [
"The kinetic energy of the solid decreases.",
"The average density of the solid increases.",
"The specific heat capacity of the solid decreases.",
"The average molecular speed in the solid increases."
] | null | D | |
mmlu_stem | mmlu_stem_15436 | Mr. Clark worked in a newspaper, and he did a lot of important and difficult work, but then he began to forget things, and this made his work very difficult. One day he said to himself, "I'm going to go and see Dr. Martin about this." He waited in the doctor's waiting room with the other patients, and then the nurse said to him, "You can go in and see Dr. Martin now". "Oh, doctor," said Mr. Clark, 'it's terrible, I can't remember anything for longer than half a minute, and it's making my work very difficult. What can I do? Can you help me?" The doctor said, "When did this start, Mr. Clark?" "When did what start?" Mr. Clark said. _ made Mr. Clark work very difficult. | [
"Important work",
"Working for a long time",
"Forgetting things",
"Bad condition"
] | null | C | |
mmlu_stem | mmlu_stem_11563 | "If you want to see a thing well,reach out and touch it!" That may seem a strange thing to say.But touching things can help you to see them better. Your eyes can tell you that glass ball is round.But by holding it in your hands,you can feel how smooth and cool the ball is.You can feel how heavy the glass is. When you feel all these about the ball,you really see it. With your skin,you can feel better.For example,your fingers can tell the difference between two coins in your pocket.You can feel a little drop of water on the back of your hand,too. You can even feel sounds against your skin.Have you ever wanted to know why some people like very loud music? They must like to feel the sounds of music. All children soon learn what "Don't touch!" means.They hear it often.Yet most of us keep on touching things as we grow up.In shops,we touch things we might buy,such as food,clothes and so on.To see something well,we have to touch it. The bottoms of our feet can feel things,too.You know this when you walk on warm sand,cool grass or a bad floor.All feel different under your feet. There are ways of learning to see well by feeling. One way is to close your eyes and try to feel everything that is touching your skin.Feel the shoes on your feet,the clothes on your body,the air on your skin.At first,it is not easy to feel these things.You are too used to them! Most museums are just for looking.But today some museums have some things to touch.Their signs say,"Do touch! There you can feel everything on show.If you want to see better,reach out and touch.Then you'll really see!" Why does it say,"At first,it is not easy to feel these things?" | [
"The things are used by people,too.",
"People are used to the things.",
"People know how to use the things.",
"The things are easy to feel."
] | null | B | |
mmlu_stem | mmlu_stem_5667 | Once upon a time, there was a wonderful old man who loved everything on the land ---- animals and plants. One day while walking through the woods, the old man found a cocoon of a butterfly. He took it home. A few days later, a small opening appeared; he sat and watched the butterfly for several hours as it struggled to force its body through that little hole. Then it seemed to stop making any progress. It appeared as if it had gotten as far as it could and it could go no farther. Then the man decided to help the butterfly, so he took a pair of scissors and cut the remaining bit of the cocoon. The butterfly then came out easily. But it had a swollen body and small, shriveled wings. The man continued to watch the butterfly because he expected that, at any moment, the wings would enlarge and expand to be able to support the body, or they would be smaller. Neither happened! In fact, the butterfly spent the rest of its life crawling around with a swollen body and shriveled wings. It never was able to fly. What the man in his kindness and hurry did not understand was that the struggle required for the butterfly to get through the tiny opening was nature's way of forcing fluid from the body of the butterfly into its wings so that it would be ready for flight once it achieved its freedom from the cocoon. Sometimes struggles are exactly what we need in our life. If we were allowed to go through our life without any difficulties, it would cripple us. We would not be as strong as what we could have been. And we could never fly. The reason why the butterfly could not fly is that _ . | [
"the old man broke its wings",
"it was too small",
"newly born butterflies can't fly",
"it came out of its cocoon without enough struggle"
] | null | D | |
mmlu_stem | mmlu_stem_13193 | Hello, everyone! My name is Steve. Lunchtime is my favorite time. I love the school lunch. Many students don't like the school lunch. They take their own lunch to school. Their mothers may make hamburgers and salad for them for lunch. Some students take leftovers for lunch. But I don't! The lunch is very _ . For only $1.3, I can eat a lot of good and healthy food. Then I take my food to my lunch table and sit with my friends. Boys don't sit with girls. We eat lunch and we like to talk about sports and TV shows . We also talk about school life : our favorite subjects, our favorite teachers and our favorite days. After our lunch, we usually play games. At school, I love lunchtime. For me it is the best time of my day! What's the title to the passage ? | [
"My School",
"My Favourite Day",
"My Classmates",
"My Lunchtime"
] | null | D | |
mmlu_stem | mmlu_stem_766 | All of these are examples of the ways Earth and the Moon interact except | [
"the phases of the Moon.",
"the tides on Earth.",
"seasons on Earth.",
"lunar eclipses."
] | null | C | |
mmlu_stem | mmlu_stem_14865 | The days are getting shorter and shorter, and temperatures are dropping. Winter is coming and it is easy for people to catch flu. Many people have started taking vitamin C pills as a precautionary way. But a research has shown that vitamin C pills do not provide as much protection as they think. They are even not as good as other ways, like often washing your hands. Some German scientists have given people information and a test on the subject helping to stop incorrect ways. Whether it is caused by cold or flu , a runny nose and sore throat are signs of catching a cold. Many people overestimate the advantages of vitamin C and other pills. For years it was believed that taking vitamin C pills not only provided protection against colds but also against cancers, helping people to live longer. But the result of the research showed disagreement on these beliefs . The result has now come out on the website wwww.informedhealthonline.org. "Some pills may not help people live longer. Some pills may even lead to earlier death," says Professor Peter Sawicki. Scientists also say that the best way to get vitamins is through food instead of having vitamin pills. That is to say, we disagree with the way of taking vitamin C pills. There are many simple but useful ways to lower the risk of catching a cold. These include often washing your hands with normal soap and water and not touching your face with your hands. People who have already had a cold can stop it from spreading by throwing away tissues at once after using them and not shaking hands with other people. A runny nose and sore throat mean someone _ . | [
"will catch a cold in a few days",
"would never catch a cold",
"has caught a cold",
"would never spread colds to others"
] | null | C | |
mmlu_stem | mmlu_stem_17771 | Which example describes an organism taking in nutrients? | [
"a dog burying a bone",
"a girl eating an apple",
"an insect crawling on a leaf",
"a boy planting tomatoes in a garden"
] | null | B | |
mmlu_stem | mmlu_stem_14278 | Hundreds of people did not get their train tickets through the online train ticketing service after paying the money. The China Railway Customer Service Center said that it would try to solve the problem and return the money in 15 working days. The service center said changes would be made to the online booking system which limited each purchase which is finished in 30 minutes. Many people said that they failed to book tickets because of the time limit in purchase. People who paid without getting their tickets have formed groups on QQ. As many as 400 people had joined the QQ group by Thursday and the group continues to grow. The ticket buyers said their money had been returned through online banks but they didn't get confirmation from the online booking system. They are afraid that they will not be able to get refunds because they don't have the order number given to those who have succeeded in booking. People also said they were unable to inquire through the booking hotline 12306, because it is almost always busy. The China Railway Customer Service Center Website suggested that the online banks didn't return the payment information to the online booking system because of network problems. The online railway booking service was made by the Ministry of Railways on Dec. 21, in order that people can easily buy train tickets during the Spring Festival. According to the passage,which is Not true? | [
"The people who didn't get tickets can get their money back.",
"People can't inquire their booking through the hotline 12306.",
"People can easily book train tickets online without any problems.",
"The online booking system didn't get the payment information."
] | null | C | |
mmlu_stem | mmlu_stem_15712 | Uncle Wang is fifty. He has two sons, Wang Lei and Wang Fei. They are twins. They are twenty -two. Wang Lei likes making things. He makes many different things. Today he's making a machine. He wants to ride the machine like a bike and fly it like a plane. Wang Fei doesn't like making things at all. He likes reading and watching TV very much. He plays table tennis on Saturdays and Sundays. Wang Lei and Wang Fei like playing football a lot. Uncle Wang likes his two sons very much. They love each other, too. Wang Fei _ on Saturdays and Sundays. | [
"goes shopping",
"reads books",
"does housework",
"plays table tennis"
] | null | D | |
mmlu_stem | mmlu_stem_1961 | A hot, boiled egg is put into a cup of cold water. What happens to the temperature of the water and the egg? | [
"The water gets colder and the egg gets warmer.",
"The water gets warmer and the egg gets colder.",
"The water temperature stays the same and the egg gets colder.",
"Both the water and the egg get warmer."
] | null | B | |
mmlu_stem | mmlu_stem_9214 | Some snakes eat other snakes, even poisonous ones. The poison does not do them any harm . Snakes can swallow things that are bigger around than they themselves are. This is possible because the jawbones are loosely joined, and the mouth can stretch to make room for a fat animal. The snake's slim body stretches to make space for the animal when it is inside. Many snakes eat birds' eggs or frogs . Others eat pests , mice and other animals that harm crops on farms. Because snakes do this valuable work, you should never kill one. It is too dangerous for you to kill a poisonous one. Leave that job to experts. In writing this passage the writer mainly wants us to _ | [
"have a better impression about snakes",
"like snakes",
"kill snakes with the help of experts",
"regard snakes as one of man's best friends"
] | null | A | |
mmlu_stem | mmlu_stem_17533 | Which of these cell structures converts nutrients to energy for cell functions? | [
"cell membrane",
"chloroplasts",
"mitochondria",
"endoplasmic reticulum"
] | null | C | |
mmlu_stem | mmlu_stem_3149 | Going to outer space is a little like going camping. You have to carry with you all the food and equipment you need for your trip, so your food can't be too heavy or hard to prepare. Plus, there are no refrigerators to keep food cold and fresh. Food with all the water dried out is lightweight and doesn't spoil. So, many space foods are dried on Earth and stored in special packets. Some taste good right out of the packet. On earth, gravity is the force that keeps your feet on the ground and your sandwich on your plate. But there's no gravity in space. To keep food from floating away, astronauts on the Space Shuttle attach the packets to a special tray. The tray can be fixed to a wall or to the astronaut's lap. To prepare their food, astronauts use liquid forms of salt and pepper. The liquid sticks to the food better. Regular salt and pepper would float away, maybe up an astronaut's nose. Liquids float right out of cups and glasses, though. So astronauts drink everything from a small bag with a straw that can be closed. Astronauts say that most space foods taste pretty good. Some, such as apples and pudding, are the same as the foods you eat on Earth. Astronauts eat tortillas instead of bread because they make fewer crumbs . Floating crumbs could get stuck in equipment or an astronaut's eye. Your body used food in space the same way it does on Earth. Your body must deal with waste in space too. During takeoff the landing, astronauts can't leave their seats to go to the bathroom. They wear diapers under their spacesuits instead. The Space Shuttle has a bathroom the size of a small closet. The toilet has bars that keep astronauts from floating away. A strong flow of air is used instead of water to flush waste down the toilet. Back on Earth it's flushed away-or sometimes studied by scientists. Why do astronauts use liquid forms of salt and pepper to prepare food? | [
"Liquid doesn't spoil.",
"Liquid is convenient to use in space.",
"Liquid is lightweight.",
"Astronauts are in great need of water."
] | null | B | |
mmlu_stem | mmlu_stem_7859 | Your computer has been playing music for years, one CD at a time. Now hundreds of songs can be stored in your PC (personal computer) if they're in the MP3 format. What is it? MP3 compresses music into small computer friendly files. You access MP3 music several ways : Music can be downloaded from websites that have converted vast music libraries into MP3. Or you can prerecord CDs into your PC and convert songs in minutes into MP3. Once MP3 music is on your PC's hard drive, you can play it through your computer's speakers, " _ " it onto blank CDs or exchange MP3 files with friends using E-mail. How much? Software needed to play and convert MP3 music is often free. It comes preinstalled on most new computers or can be downloaded from many websites, including MP3. com. Some MP3 sites are free. Just type "MP3 sites" into any search engine. The popular MP3 players start at around $50and can hold hundreds of songs. A blank CD on which you can record music costs about a dollar. Advantages MP3 turns your home PC into a tape recorder. Tiny MP3 players are the size of a card, making it easy to take hundreds of songs with you. Disadvantages You may find that music at many sites is limited. And some only allow you to listen rather than download offerings. Others let you download music that then can't be copied to MP3 players. And a growing number of new CDs make it impossible to copy songs to a computer. How can you get MP3 music? | [
"By turning your home PC into a tape recorder",
"By taking your own music or songs with you",
"By copying songs to a PC through the speakers.",
"By downloading from websites which have converted music libraries into MP3."
] | null | D | |
mmlu_stem | mmlu_stem_742 | Which of the following is a central role of carbon in the chemistry of living organisms? | [
"Carbon can only bond with other carbon atoms.",
"Carbon is a solvent that breaks chemical bonds.",
"Carbon readily forms ionic bonds that separate easily.",
"Carbon can form many types of molecules with covalent bonds."
] | null | D | |
mmlu_stem | mmlu_stem_3116 | Passage 1 The Information Highway is the road that links computer users to a large number of on-line services: the Web,e-mail,and software,to mention just a few. Not long ago,the Information Highway was a new road,with not many users. Now,everyone seems to want to take a drive, with over 30 million families connected worldwide. Not surprisingly, this well-traveled highway is starting to look like a well-traveled highway. Traffic jams can cause many serious problems,forcing the system to close down for repair. Naturally,accidents will happen on such a crowded road,and usually victims are some files,gone forever. Then,of course,there' s Mr. Cool,with his new broad-band connection,who speeds down the highway faster than most of us can go. But don' t trick yourself:he pays for that speeding. Passage 2 Want to know more about global warming and how you can help prevent it?Doctor Herman Friedman,who is considered a leading expert on the subject,will speak at Grayson Hall next Friday. Friedman studied environmental science at three well-known universities around the world before becoming a professor in the subject. He has also traveled around the world observing environmental concerns. The gradual bleaching of the Great Barrier Reef,which came into the public eye in 2002,is his latest interest. Signed copies of his color1ful book,which was p ublished just last month,will be on sale after his talk. How does Mr. Cool manage to travel the Information Highway so fast? | [
"By storing fewer files.",
"By repairing the system.",
"By buying a better computer.",
"By using a broad-band connection."
] | null | D | |
mmlu_stem | mmlu_stem_15208 | Hello, I'm Lily. I am a student of No. 6 Middle School. I like singing and dancing. I can sing pop music very well. I like eating meat, because I think it's very delicious. I am good at English, because I like it very much. My mother is a shop assistant. She likes listening to Zhang Xueyou's songs. She always goes shopping with me. She's good at maths. When I have problems with maths she often helps me. My father is a manager. He always goes to the park with me. My father is good at Chinese and he also likes pets very much. My sister is a student of fourteen years old. She's a small famous singer in the city. She likes singing and dancing. She can sing very well. Is Lily's father good at Chinese? | [
"Yes, he is.",
"No, he isn't.",
"Sorry, we don't know.",
"Maybe."
] | null | A | |
mmlu_stem | mmlu_stem_12624 | We have always been interested in the moon. 2000 years ago people already knew it moved around the earth and where it would be in the sky at different times of the year. At that time, everything about the moon was learned by watching it carefully in the sky. When scientists could use telescopes to study the moon more closely, their ideas began to change. They could see the moon was made of rocks. Most scientists thought moon rocks would be different from those on Earth. This was because they believed the moon had once been a planet that had been caught in the earth's gravity millions of years earlier. In 1969 moon rocks were finally brought to the earth and studied. Much to their surprise, scientists found that, except for water, the moon and the earth were made of the same things. Once again new ideas were needed for this new information. After years of study, most scientists now think that the moon was once part of Earth. They believe very early in its history, maybe 4 million years ago, something about the size of Mars hit Earth. This sent billions of rocks into space around our planet. These rocks slowly joined together and after many years became the moon. In the future, even though our ideas about the moon may change again, we will still be interested in it. In the passage the writer wants to tell us _ . | [
"why people are interested in the moon",
"how ideas about the moon have changed over time",
"where the moon came from in the past",
"that people have finally learned the truth about the moon."
] | null | B | |
mmlu_stem | mmlu_stem_5556 | As a boy, Sanders was much influenced by books about the sea, but by the age of fifteen he had decided to become a doctor rather than a sailor. His father was a doctor. So he was often with the doctors and got along very well with them. When he was fourteen, he was already hanging around the hospital where he was supposed to be helping to clean the medicine bottles, but was actually trying to listen to the doctors' conversations with patients in the next room. During the war Sanders served in the army as a surgeon . "That was the happiest time of my life. I was dealing with real sufferers and on the whole making a success of my job." In Rhodes he taught the country people simple facts about medicine. He saw himself as a life-saver. He had proved his skill to himself and had a firm belief that he could serve those who lived simply, and were dependent upon him. Thus, while in a position to tell them what to do he could feel he was serving them. After the war, he married and set up a practice deep in the countryside, working under an old doctor who hated the sight of blood. This gave the younger man plenty of opportunities to go on working as a life-saver. At the age of 14, Sanders _ . | [
"worked as a doctor in the hospital",
"got along well with the patients",
"was interested in talking with doctors and patients",
"helped to clean the medicine bottles in the hospital"
] | null | D | |
mmlu_stem | mmlu_stem_9129 | It doesn't matter when or how much a person sleeps, but everyone needs some rest to stay alive. That's what all doctors thought, until they heard about Al Herpin. Al Herpin, it was said, never slept. Could this be true? The doctors decided to see this strange man themselves. Al Herpin was 90 years old when the doctors came to his home in New Jersey. They thought for sure that he got some sleep of some kind. So they stayed with him and watched every movement he made. But they were surprised. Though they watched him hour after hour and day after day, they never saw Herpin sleeping. In fact, he did not even own a bed. He never needed one. The only rest that Herpin sometimes got was sitting in a comfortable chair and reading newspapers. The doctors were _ by this strange continuous sleeplessness. They asked him many questions, hoping to find an answer. They found only one answer that might explain his condition. Herpin remembered some talk about his mother having been injured several days before he was born. But that was all. Was this the real reason? No one could be sure. Herpin died at the age of 94. The word "puzzled" in this passage probably refers to " _ ". | [
"make you think a lot because you do not understand it",
"make you worry a lot because you cannot sleep well",
"make you sad because something unusual has happened",
"make you fear because something terrible has happened"
] | null | A | |
mmlu_stem | mmlu_stem_1017 | The speed of sound is generally greatest in | [
"solids and lowest in liquids.",
"solids and lowest in gases.",
"gases and lowest in liquids.",
"gases and lowest in solids."
] | null | B | |
mmlu_stem | mmlu_stem_22358 | If a large boulder is kept in direct sunlight it can | [
"become powerful",
"grow larger",
"gain chill",
"lose portions"
] | null | D | |
mmlu_stem | mmlu_stem_18278 | Atoms of which of these elements are part of many organic molecules? | [
"calcium",
"magnesium",
"oxygen",
"silicon"
] | null | C | |
mmlu_stem | mmlu_stem_20004 | Flora requires chlorophyll to | [
"moonlight",
"undergo natural development",
"starlight",
"dairy"
] | null | B | |
mmlu_stem | mmlu_stem_3721 | PGL kids everywhere, will tell you that we are the best when it comes to thrills, challenges and adventures - all rolled into one fantastic holiday! Children leave PGL with loads of more friends and interests and feel more confident - they'll be counting the days until their next PGL holiday! For childcare voucher information, please click here. Climbing Adventure This holiday will teach you how to independently climb! At the end of the week you'll get to use all your new skills when you visit a local cliff for some outdoor crag climbing. We make the best use of all our activities including Climbing, Abseiling, Trapeze, Zip Wire and Jacob's Ladder to teach you all the right rope work and climbing skills. Throughout the holiday you will work towards the National Indoor Climbing Achievement Scheme and by the end of the holiday you will have achieved Level 2. Cook's Academy Our brand new holiday for 2013! Come along and learn how to cook with a top chef! Whether you've never cooked before or are a bit of a pro, this holiday will have you cooking a variety of tasty dishes and treats. No experience is required as our professional chef will pass on their knowledge so you can develop from any level of experience. What's more, you'll get your very own recipe book containing everything you've learnt and will be able to take a dish home to impress your friends and family. Dance This holiday is an excellent opportunity to try loads of different dance styles. You'll spend half of each day learning different types of dance, everything from salsa to ballroom dancing and street dance to jive. Throughout the week your instructors will give you lots of tips and advice as well as helping you prepare a dance routine to impress your friends when you perform at the end of the week. Film Making You and your group will be able to choose what type of film to make - adventure, fantasy, thriller or comedy and then you'll become a film crew, creating your own blockbuster ready to show to everyone else at the end of the week. You will find out what's involved in directing a movie and have the chance to edit your film using professional editing software. What's more, you'll have your film on DVD to take home with you too! What will you do during the Climbing Adventure holiday? | [
"You will go outdoors with your friends to practice climbing.",
"You will visit many local dangerous cliffs.",
"You will learn climbing both indoor and outdoor.",
"You will only learn climbing skills during the holiday."
] | null | C | |
mmlu_stem | mmlu_stem_8683 | Are you carrying too much on your back at school? You're not alone. Back experts in the USA were worried that young students are having back and neck problems because they are carrying too much in their backpacks (schoolbags). "It hurts my back when I run," said Eglin Reyes, a student in Virginia. "It's hard to get up the stairs with my backpack because it's too heavy." Students have to carry heavy backpacks on their backs for a whole week's study. Beeline is one of them. They have regular backpacks with two straps to carry them, but a number of students with heavy loads have switched to rolling backpacks. The backpacks have wheels and can roll on the ground. Shirley Park's backpack weighs 10 kilos, and she said, "I'll change to a rolling backpack because I am starting to have back pain." How much is too much? Experts say that students should carry no more than 10 to 15 percent of their own body weight. A few students have had a good idea to lighten the load: Less homework. Doctor's suggestions: *Lighten the load. Take home only the books the students need that night. *Wide straps are better. They can send out weight over your shoulders and be sure to wear backpacks with two straps. *The heaviest things should be packed closest to the back. *Bend both knees when you pick up the pack, don't just bend the waist . If a child carries a heavy school bag , _ | [
"his back and neck will be hurt",
"his head and arms will be hurt",
"his hands will be hurt",
"his feet will be hurt"
] | null | A | |
mmlu_stem | mmlu_stem_7037 | Two space walkers fixed a camera on the outside of the international space station on Monday and threw overboard a data - collecting device , sending it rolling off into space like a football. The new camera will help space station astronauts add new pieces onto the orbiting station. Mr Arthur and his Russian crewmate left the or biting station unmanned during the 5 - hour spacewalk. Normally, one crew member stayed aboard while two others worked outside. But the space station crew has been reduced to two since the space shuttle prefix = st1 /Columbiadisaster in 2003, and it has been left empty nine times during spacewalks since then. The device thrown overboard was once used to collect data on electrical activity around the space station. It was designed to work for only a few months and was no longer needed. Engineers were afraid pieces might break off and damage the space station, so they decided to cut it loose. The device, which weighs about 60 pounds and has solar panels that extend about 2 feet, is expected to burn up in the atmosphere in about three months. Happily, the space walking pair helped each other into their spacesuits without the help of a third crew member. The space walk was put off by an hour because of trouble with the US airlock , which did not depressurize completely at first. But the pair quickly made up for the lost time as they worked outside. It was the first time in two years that space walkers exited through the USairlock. Why did the spacewalkers leave the orbiting station unmanned? | [
"They were busy fixing a camera.",
"They had to throw a data - collecting device.",
"They had to stay aboard.",
"The space station crew has been reduced to two due to an accident."
] | null | D | |
mmlu_stem | mmlu_stem_20748 | A light that is turned on will be connected to wiring, which will | [
"be shredded",
"feel toasty",
"be wooden",
"be icy"
] | null | B | |
mmlu_stem | mmlu_stem_12784 | "If you want to see a thing well, reach out and touch it!" That may seem a strange thing to say. But touching things can help you to see them better. Your eyes can tell you that a glass ball is round. But by holding it in your hands, you can feel how smooth and cool the ball is. You can feel how heavy the glass is. When you feel all these about the ball, you really see it. With your skin, you can feel better. For example, your fingers can tell the difference between two coins in your pocket. You can feel a little drop of water on the back of your hand, too. You can even feel sounds against your skin. Have you ever wanted to know why some people like very loud music? They must like to feel the sounds of music. All children soon learn what "Don't touch!" means. They hear it often. Yet most of us keep on touching things as we grow up. In shops, we touch things we might buy, such as food, clothes and so on. To see something well, we have to touch it. The bottoms of our feet can feel things, too. You know this when you walk on warm sand, cool grass or a bad floor. All feel different under your feet. There are ways of learning to see well by feeling. One way is to close your eyes and try to feel everything that is touching your skin. Feel the shoes on your feet, the clothes on your body, the air on your skin. At first, it is not easy to feel these things. You are too used to them! Most museums are just for looking. But today some museums have some things to touch. Their signs say, "Do touch!" There you can feel everything on show. If you want to see better, reach out and touch. Then you'll really see! When people buy things in shops, they often _ . | [
"try them on first",
"put their right hand on them",
"just have a look",
"feel and touch them"
] | null | D | |
mmlu_stem | mmlu_stem_7914 | Leon, 12, was born without fingers on his left hand.That didn't -stop him from being able to do many tasks. But Leon could not grasp more than one object at a time. So Leon's father, Paul, created a prosthesis ,using a 3D printer. Now Leon has fingers that open and close."It was a do-it-yourself, father and son adventure," says raw. When Leon was a baby, his doctor advised his parents not to give him a prosthetic hand until he was in his early teens. "The doctor said Leon should first learn to get full use out of the hand he was born with," says Paul. As Leon got older, his father looked into buying a prosthetic hand, which can cost as much as $30,000. Paul found a more affordable solution. One day, Paul discovered a video on the Internet about Robohand, a prosthesis created with a 3Dprinter. He downloaded the free instructions and called Robohand's creators for advice. They told him all he needed was a 3D printerwhich costs around $2,000- and some materials. Luckily, Leon's school had recently purchased a 3D printer and it offered to help Paul build the hand for Leon."We used a soccer shin guard ,cardboard, and tape. They cost about$10," says Paul. With his new hand, Leon can do things better. "I can help my mom more, because now I can carry two grocery bags,"he says. Leon's father has already built .several hands for Leon. Leon helps design each one. He says there's one thing in particular that he wants to do with a future prosthesis."The goal," he tells the reporter from the local evening paper,"is to be able to tie my shoelaces:' The materials used for Leon's hand can be described as | [
"cheap and common",
"strange and valuable",
"personal and lovely",
"basic and solid"
] | null | A | |
mmlu_stem | mmlu_stem_5610 | At the recent O&P Extremity Games, I had the opportunity to observe a new generation of athletes with disabilities who were skateboarding and rock climbing. These young people really showed the promise of how rewarding physical activities are! We disabled can - and should be -- as active as anyone else. When we get and stay active, we will feel better, be able to do more, have healthier bodies, and look better. It is a fact that exercise actually produces energy and builds on itself. The more we exercise, the fitter our bodies are, and thus the more energy we have to enjoy recreation and the pleasure of life. Not everyone is cut out to be a competitive athlete, but there are things that we can do to strengthen our physical well-being. Experts recommend that spending as little as 30 minutes each day on physical activities provides benefits including lower risk of heart disease, cancer, high blood pressure, diabetes and other serious diseases. Taking steps to become physically fit does not have to mean acquiring expensive training equipment or a gym membership. Exercise can include simple walking and running, gardening, cleaning the house, swimming, tennis, bicycling (stationary or on the road) and so on. The key is to do it on a regular basis. Healthy lifestyles also require good nutritional habits. When choosing foods, nutritionists advise whole grains, flesh fruits and vegetables, fish, and lean cuts of poultry and meat. The benefits of drinking eight full glasses of water a day are also _ . Water provides the means for nutrients to travel to all our organs, improves skin tone , regulates body temperature and contributes to muscle strength and control, which is confirmed by scientists. Fitness results in completing the tasks of daily living, working a full day, and still having energy to participate in recreational activities. By being fit, you'll find that you enjoy recreational activities even more because you won't be tired or suffer from gore muscles. It is time, folks, to get moving. So let's all get out there and do some exercise! The author is most probably a (n) _ . | [
"disabled man",
"doctor",
"coach",
"athlete"
] | null | A | |
mmlu_stem | mmlu_stem_4647 | A newly discovered planet looks just right for life as we know it, according to an international group of astronomers. Orbiting a star about 500 light-years away, the planet called Kepler-186f is about the same size as Earth. It orbits its star at the right distance for liquid water on the surface. That is a necessary condition for life as we know it. But it is not exactly like Earth, NASA planetary scientist Elisa Quintana said. "It's more of an Earth's cousin. It's not an Earth's twin. It shares the same characteristics as Earth, but their parent stars are very different," said Quintana. Kepler-186f orbits a star that is smaller and cooler than our sun. But, writing in the journal Science, the astronomers say the planet appears to be a closer than most of the hundreds of others discovered so far. Some are massive gas-covered giants with thick, crushing atmospheres. Others orbit too close to their stars and are too hot for life. Two planets discovered last year are in the right orbit and might be good candidates for life, Quintana says, but they are a bit bigger than Earth. "For the first time, we can actually say we now have a planet that is both Earth-sized and orbits in its star's habitable zone," she said. It may be the first time, but it probably is not the last, says Massachusetts Institute of Technology astrophysicist Sara Seager. "We've been waiting decades to understand how common habitable planets might be, and it's looking like they're really common. And this gives us excitement and motivation to take the next step," said Seager. The next step would be to look for signs of life in the atmospheres of these distant worlds. That would take a more sophisticated (;) space telescope. But budget cuts threaten that mission, says University of California at Los Angeles astrophysicist Ben Zuckerman. "In principle, we could do this in the next few decades. But in practice, because there's no money, it's not gonna happen. It's not gonna happen in my lifetime, for example." Leaving earthbound concerns behind, NASA's Elisa Quintana believes that when the next-generation space telescope is launched, it will find that we are not alone in the universe. Which of the following would be the best title for the passage? | [
"Where there is water, there is life",
"A planet exactly like Earth found",
"Life discovered on Kepler-186f",
"New Earth-size planet found"
] | null | D | |
mmlu_stem | mmlu_stem_3315 | A long time ago people thought that the sun went round the earth. In some countries people even said that the sun was a god . They thought the god drove across the sky each day on a golden horse. Now we know the earth goes round the sun. It takes the earth a year to go all way round the sun. Today men even know how far it is for the earth to go round the sun. They tell us that the earth travels over a thousand miles a minute on its journey round the sun. The sun is really a star. It is much bigger than the earth and it is very hot. Some people have been to the moon but we know that no one can ever go to the sun. It is far too hot for people to live anywhere near it. The sun is three hundred thousand times heavier than the earth and more than million times larger. A long time ago, people said the sun was _ . | [
"a golden horse of god",
"a god on a golden horse",
"a god with golden dress",
"a god and a golden horse"
] | null | D | |
mmlu_stem | mmlu_stem_15577 | Have you seen Avatar(<<>> )? It's a popular 3D movie, and you may have to wear 3D glasses to see it. The 3D glasses make the images from the movie look as if they were coming straight towards you. More and more 3D movies are coming to theaters. Some say that 3D TV sets will come into our homes in the near future. 3D technology can make TV and movies are more exciting. However, people with eye problems may get headaches if they spend too much time watching 3D movies. Why? When we look at an object , each eye sees it at a different angle . Our eyes send the two images to our brain , and the brain puts them together. 3D technology uses two film projectors . One projects a left-eye-image and the other projects a right-eye-image. 3D glasses allow us to see a different image in each eye. So, when we are watching a 3D movie, our brain can't put together the images sent to our eyes. The brain needs to work harder at "reading" the images. That makes it easier for people with eye problems to get dizzy or have headaches. A famous eye doctor said if your eyes can't focus on the same object at once, you will have trouble watching 3D movies. . If you wear a pair of 3D glasses, _ . | [
"you will see different images in both eyes",
"your brain can't work at all",
"the images can be put together easily by your brain",
"our brain can put the images together"
] | null | A | |
mmlu_stem | mmlu_stem_12293 | When you sit in the classroom, do you suddenly feel that summer flew by so quickly? I'm still thinking about taking walks in the park and meeting my friends at night. But I know that the school season is beginning. And homework, tests and routine all come with it. When I stay in my room and write my homework, I often look out of the window and look back at this summer. In the past two months of summer break, I spent many evenings in my backyard. I listened to my parents telling stories about their childhood. My brother caught fireflies . Once in a while, we made a barbecue and ate chicken and corn. Now I'm back to school. It's difficult to find time to do everything that I want to do, like dancing, reading, and sleeping. How I hope to have another break in my studies! I could read a fun book instead of the boring ones that we have to read for English class. Still, I should not feel sad. Summer gave me time to relax, good memories, laughter, and the experience of new friendships. But without school, I would never appreciate the happy moments in summer and the responsibilities that I have now. What's more, there are only 10 more months to go until summer comes again. And in the meantime, I can have lots of fun with my friends as we begin our high school experience together. The writer wrote the article to _ . | [
"tell people how he spent his summer break",
"show her sadness for the end of the summer break",
"show her resolutions for the new term",
"express that both summer break and school days should be treasured"
] | null | D | |
mmlu_stem | mmlu_stem_20980 | Which of these things would cause more racoons to hang out nearby? | [
"shooting them as they come",
"cutting their hair at night",
"leaving lids off garbage cans",
"putting garbage cans inside the garage"
] | null | C | |
mmlu_stem | mmlu_stem_8776 | If you look for a book as a present for a child,you will be spoiled for choice even in a year there is no new Harry Potter. J.K Rowling's wizard is not alone.The past decade has been a harvest for good children's books, which has set off a large quantity of films and an increased sales of classics such as The Lord of the Rings. Yet despite that, reading is increasingly unpopular among children.According to statistics in 1997, 23% said they didn't like reading at all.In 2003, 35% didn't.And around 6% of the children leave primary school each year unable to read properly. Maybe the decline is caused by the increasing availability of computes games.Maybe the books boom has affected only the top of the educational pile.Either way, Chancellor Cordon Brown plans to change things for the bottom of the class.In his pre-budget report, he announced the national project of Reading Recovery to help the children struggling most. Reading Recovery is aimed at six year olds, who receive four months of individual daily half-hour classes with a specially trained teacher.An evaluation this year reported that children on the school made 20 months' progress in just one year, whereas similarly weak readers without special help made just five months' progress ,and so ended the year even further below the level expected for their age. International research tends to find that when British children leave primary school, they read well, but read text often for fun than those elsewhere.Reading for fun matters because children who are keen on reading can report lifelong pleasure and loving books is an excellent indicator of future educational success.According to the OECD, being a regular and enthusiastic reader is of great advantage. Statistics suggested that _ . | [
"the number of top students increased with the use of computers",
"a decreasing number of children showed interest in reading",
"a minority of primary school children read properly",
"a huge percentage of children read regularly"
] | null | B | |
mmlu_stem | mmlu_stem_7157 | Hemophilia results when a gene fails to produce the protein needed for the blood to clot ,or change from a liquid to a solid .The fault gene is passed from parents to children .People with hemophilia suffer uncontrolled bleeding .This can result in pain , tissue swelling and permanent damage to joints and muscles. One in every ten thousand males has the most common kind of hemophilia .It is extremely rare for females to have it. Patients can be treated with the missing clotting substance .They generally can lead normal lives. Scientists say gene treatment may be a possible way to cure hemophilia in the future .Researchers consider hemophilia the best disease for gene treatment because it is caused by a single fault gene .Also ,only a small increase in the missing clotting substance could provide good results .They tested gene treatment in six patients with severe hemophilia. First ,they removed skin cells from the patients' arms .The researchers grew the cells in the laboratory .They added copies of the needed gene taken from healthy people .Then they created hundreds of millions of genetically changed cells .They placed these cells into the patients' stomachs.After four months ,the amount of blood clotting substance in the blood increased in four of the six patients .Some of the patients reported a decrease in bleeding problems .However ,ten months later ,the clotting substance was no longer in the patients' blood .It is not clear if the implanted cells died or the added genes stopped working. The researchers say the study showed that gene treatment is safe for people with the most common kind of hemophilia .But others expressed concern about the treatment because the effects were only temporary. Which of the following can be the title of the passage? | [
"whether people with hemophilia can live normally",
"how to control the bleeding for hemophilia patients",
"how the researchers remove skin cells from patients and place these cells into the patients.",
"the gene treatment for hemophilia"
] | null | D | |
mmlu_stem | mmlu_stem_10365 | The National Dark-Sky Week (NDSW) is a week during which people all over the United States turn off their lights to enjoy the beauty of the night sky without light pollution. This even was started by Jennifer Barlow of Midlothian, Virginia in 2003, and it is becoming more popular each year. It has been supported by the International Dark-Sky Association, the American Astronomical Society, and the Astronomical League. This even always occurs in April, during the week of the new moon so that the sky can be as dark as possible for the best viewing conditions. "It is my wish that people could see the night sky without other light in the sky as our ancestors saw it hundreds of years ago," explains Barlow. _ The main goal of NDSW is to increase awareness of the harmful effects of light pollution. It is not possible for all of the light pollution in this part of the world to disappear. However, it is possible to make a small difference in the quality of the night sky. Another goal of this even is to promote the use of better lighting systems that direct light toward the ground instead of up into the sky. Jennifer Barlow states, "The night sky is a gift of such beauty that it should not be polluted by wasted light. In this way, our children will not lose touch with the wonder of our universe." What is Jennifer Barlow's wish? | [
"That light would be directed up into the sky.",
"That the sky would always be as dark as possible.",
"That people could see the night sky without light pollution as our ancestors did.",
"That people could spend time enjoying the beauty of the sky every night."
] | null | D | |
mmlu_stem | mmlu_stem_19254 | Which of these items was able to keep things cool thanks to electrical conversion? | [
"magic carpet",
"snowy road",
"light bulb",
"table fan"
] | null | D | |
mmlu_stem | mmlu_stem_17973 | The growth of which of the following usually occurs first in primary succession on a bare rock? | [
"Lichens",
"Grasses",
"Trees",
"Shrubs"
] | null | A | |
mmlu_stem | mmlu_stem_14863 | Paula Monday Tuesday Wednesday Thursday Friday get up 7:10a.m. 7:10a.m. 7:10a.m. 7:10a.m. 7:10a.m. morning school school school school school lunch pizza rice rice rice rice afternoon Yo--yo Table tennis Table tennis Table tennis football evening homework homework television homework clothes Go to sleep 10:15p.m. 10:15p.m. 10:15p.m. 10:15p.m. 10:15p.m. On Wednesday evenings Paula usually _ . | [
"watches TV",
"does her homework",
"washes her clothes",
"goes to see her friends"
] | null | A | |
mmlu_stem | mmlu_stem_22274 | What causes direct damage to the lungs? | [
"drinking alcohol",
"consuming ignited tobacco",
"eating feces",
"swimming"
] | null | B | |
mmlu_stem | mmlu_stem_4880 | What will power your house in the future? According to scientists at the Massachusetts Institute of Technology (MIT) in the US, it might be artificial leaves. Natural leaves can change sunlight and water into energy. It is known as photosynthesis . Now researchers have found a way to imitate this process. The artificial leaf developed by Daniel Nocera and his colleagues at MIT can be seen as a special silicon chip with catalysts . Similar to natural leaves, it can split water into hydrogen and oxygen when put into a bucket of water. The hydrogen and oxygen gases are then stored in a fuel cell, using those two materials to produce electricity, located either on top of a house or beside the house. Though the leaf is shaped like a poker card, scientists stated that it is promising to be an inexpensive somtoe of electricity in developing countries. "One can imagine villages in India and Africa not long from now purchasing an affordable basic power system based on this technology," said an American scientist, Docera. An artificial leaf is not a new idea. The first artificial leaf was invented in 1997 but too expensive and unstable for practical use. The new leaf, however, is made of cheap materials, easy to use and highly stable. In laboratory studies, Nocera showed that an artificial leaf could operate continuously for at least 45 hours. The wonderful improvements come from Nocera's recent discovery of several powerful new, inexpensive catalysts. These catalysts make the energy transformation inside the leaf more efficient with water and sunlight. Right now, the new leaf is about 10 times more effective at carrying out photosynthesis than a natural one. Besides, the device can run in whatever water is available. Hopefully, each home could possible have the access to the new application in the future. Which of the following is NOT the advantage of the new leaf? | [
"It has a wonderful fuel cell.",
"It is small in size.",
"It is low in cost.",
"It is convenient for people to use."
] | null | A | |
mmlu_stem | mmlu_stem_4135 | A recent survey in the United States showed that the average family spent more money on its pets than on its children. Although rather shocking, it should not surprise anyone who has seen the doggy parlors where loved pets rest. Are Americans unique in treating their little friends in this way? No, the English, too, pay more attention to their pets. This can clearly be seen when we look at pet foods, which often contain more vitamins than human food. They certainly cost much. Last year the British public spent two hundred million pounds on pet food alone, to say nothing of veterinary bills or animal furniture. It is difficult not to feel angry about this when considering what the same amount could do for victims of starvation and poverty, so it is not unusual for me _ when I read an old man left all his money to his dog instead of his children. There are a variety of reasons why I find pets-raising alarming. They cause physical problems. An example of this is New York where they have great difficulty getting rid of the mess that dogs leave on the streets. Many people find this funny, but in a number of large cities it is a major problem. Animals can cause disease, too. It is the threat of rabies -- a disease with no known cure. Another problem is the carelessness of pet owners. Most little children want a dog or a cat, and they continually push their mothers and fathers until they get one. It is only when the "sweet little thing" has been brought home that the parents realize how much time and money must be spent on "Rover" or "Bonzo". Then they just abandon it. As a result, they are allowed to run free. English farmers lose hundreds of sheep a year, killed by someone's pet and you must have read of children being hurt by some pets of their own. Lastly, I would only suggest that we have got our priorities wrong and that something should be done about it. In my view, it's time we stopped being sentimental about pets. I can see no reason why we should get upset when animals are cut up for medical experiments. This will lead us to discovering cures for serious human diseases, then I say, "keep cutting!" According to the author, in which field can animals be most useful? | [
"Pet.",
"Food.",
"Medicine.",
"Sports."
] | null | C | |
mmlu_stem | mmlu_stem_20471 | A calf born in a warm season will do what better than a calf born in a cold season? | [
"see",
"stand",
"sense",
"flourish"
] | null | D | |
mmlu_stem | mmlu_stem_19598 | Nutrients in soil | [
"are used up immediately",
"are unimportant to the food chain",
"are passed on to first to apex predators",
"are passed on to the producer organisms"
] | null | D | |
mmlu_stem | mmlu_stem_20751 | Which describes the proper usage of bird beaks? | [
"skinny beats are best for sucking blood, fat beaks eat only eggs",
"skinny beaks work in only large spaces, fat beaks can only fit in narrow spaces",
"skinny beaks work to reach small spaces, fat beaks crack nuts",
"skinny beaks work to filet fish, fat beaks are useless"
] | null | C | |
mmlu_stem | mmlu_stem_20203 | Where would it be most difficult to play a game of ice hockey? | [
"ice hockey arena",
"the moon",
"a frozen pond",
"an ice rink"
] | null | B | |
mmlu_stem | mmlu_stem_21341 | O2 molecules stacked on top of each other create weight which is then tallied by a | [
"speedometer",
"odometer",
"barometer",
"a microscope"
] | null | C | |
mmlu_stem | mmlu_stem_8680 | Most children have ever heard their parents yell "sit up straight!" or "don't hang your head !" when they eat dinner. Nowadays, it is also heard around another activity -- video games. Ten-year-old Owaish admits it takes him three to four hours a day to play games on his tablet computer. In addition, he plays for about two hours on the smart phone every day. As a result, he started suffering a serious pain in the neck around June or July. What's worse the pain has spread to the hand and back gradually, which makes his mother Mehzabin become concerned. The doctors note the number of young children with the chronic pain in their necks, arms and shoulders is on the increase sharp in recent years . They are not aging, they haven't had an accident, the blood reports are fine, their X-rays are fine, and their MRIs are fine. Facts have proved that the pain is from the poor posture while they are playing video games on smart phones or other electronic devices. 19-year -old student Nida feels pain in the finger which holds the weight of her smart phone most of the day. Nida almost uses her smart phone 24/7, which means 24 hours a day, seven days a week, or all the time. Health experts predict there will be not only physical but mental problems resulting from the overuse of electronic devices. They encourage people to often take breaks and exercise from using computers, smart phones or other devices. Stand up! Stretch the legs, back, shoulders and arms in all the possible directions. That's the most effective way and maybe the key to solving the problem completely. After all, the medication doesn't help sometimes. According to health experts, _ . | [
"best treatment for the chronic pain is exercising",
"people must take medicine to cure the chronic pain",
"people should stop using smart phones",
"the chronic pain has nothing to do with one's mental health"
] | null | A | |
mmlu_stem | mmlu_stem_9714 | Finally, I entered the institution. Because of my careful savings, I did not have to work during the school year. Then, summer came and it was time to work harder than ever. I continued working as a waitress at night, instructed tennis camps several mornings a week and worked as a secretary for a few hours in the afternoons. It was an exhausting summer and made me anxious to return to my ly easy life at college. During my second and third years of undergraduate schooling, I decided to work about five hours per week in the campus admissions office answering phones. This provided a little spending money and kept me from emptying my savings. The overall situation looked hopeful as I approached my senior year as long as I could make as much money as I had the previous summer. I wanted to go to Israel to study for 3 weeks, but I hesitated in making this decision because it would cost me $1,600 more to get the credits in Israel. About two weeks later my Mom called to tell me that I had $1,600 in the bank that I had forgotten about. One of my concerns about this trip was not only the cost, but the loss of time to make money: however, I made as much that summer in the ten weeks when I was at home as I had made during the fourteen weeks when I was at home the summer before. The way everything worked together to make this trip practical was one of the most exciting things that have ever happened to me. This experience has shaped me in many important ways. The first things that I learned was the importance of a strong work ethic. Working long hours did a lot to mold my character and helped me learn the value of a dollar. It also made me learn how to find creative solutions to difficult dilemmas. Whenever I am frustrated or afraid of the future, I can remember my $64,268 miracle. The writer did job (s) during the summer of the first year of undergraduate schooling. | [
"one",
"two",
"three",
"four"
] | null | C | |
mmlu_stem | mmlu_stem_9513 | A lot of people are interested in sea animals, especially the ones that are beautiful and smart. Although some are wild, and can be deadly, each is also unique in its own way. Whales, sharks and dolphins are the main subjects of sea-animal research, with dolphins standing out from whales and sharks for their friendly behavior with humans. No doubt the desire to learn some interesting things about dolphins has led you to this article, and you too are eager to know more about these sea creatures. It is sometimes believed that Dolphins have been evolved from land mammals . Among sea mammals, dolphins are the most advanced in intelligence. You may be surprised to learn that they are close s of camels and cows. The debate on the origin of the dolphin is an unending one, however. Some believe that they evolved from land-based hoofed mammals, others believe that they evolved from other different kinds of mammals many millions of years ago. There are about 32 types of dolphins that live in salt water, each unique in its color1 and body shape. Five other types live in fresh water. A grown-up dolphin eats nearly 20 to 22 kilos of fish every day. The eating habits of dolphins depend on where they live, and on the season. Seasons in which fish are abundant are like party time for dolphins. Dolphins decide how much they are going to eat based on the fat content of the fish available. They've a good sense of understanding about their hunger. The social skills and intelligence of dolphins make them very attractive for zoos and aquariums, where they are often trained to show off their diving skills. Dolphins also communicate with each other by special sounds. Scientists like to research dolphins mainly because _ . | [
"they are friendly to humans",
"they have good diving skills",
"they have unique bodies",
"they are beautiful and clever"
] | null | A | |
mmlu_stem | mmlu_stem_8503 | A famous doctor once received a little child who was badly ill. Thanks to his skill and care, his young patient got well and was soon able to get up and run about again. The child's mother was very much obliged to the doctor, and she called on him to thank him for what he had done for her child. "Doctor," she said, "you have saved my little son. I don't know how to thank you enough. I feel that money alone cannot repay you, so I have made this little purse with my own hands, as a sign of my gratitude. I hope you will accept it." The doctor stood up and said coldly, "Madam, a little present like that is very nice between friends, but a doctor needs to be paid properly for what he has done." The lady was so surprised and hurt so much that she could not reply for a moment. Then she said quietly, "Perhaps you will tell me how much your fee is?" "Fifty pounds", he answered. The lady opened the little purse and took out four fifty-pound bank notes. She handed one of them to the doctor, and put the other three back into the purse. She put the purse into her handbag and, saying good bye to the doctor, went out of the room. The lady was thankful to the doctor because _ . | [
"he had saved her life",
"he had saved her son's life",
"he had lent her some money",
"he often called on her"
] | null | B | |
mmlu_stem | mmlu_stem_6767 | Scientists know of more than 1,000 volcanoes on the surface of Venus, Earth's "sister" planet. A big question has been: Are they still active? The scientists say yes. Their evidence for recent volcanic activity on Venus comes from a lava flow in the planet's northern hemisphere. The flow is hotter than the rocks around, which means the lava might still be cooling off. "The flow we studied seems to be very young---it is still warm inside," Nataliya Bondarenko said. Venus is a difficult planet to study from Earth because it is surrounded by thick clouds. Telescopes on Earth can't see through these clouds, so the best information about Venus comes from spacecraft orbiting it. Bondarenko and her colleagues studied the lava flow using data from NASA's Magellan mission. That spacecraft spent four years in orbit around Venus and used radar to make a map of 98 percent of the planet's surface. On October 11th, 1994, the mission ended, and the spacecraft plunged through Venus' heavy cloud cover and crashed onto the planet below. While in orbit, the Magellan craft sent microwaves, which can go through Venus' clouds, to the surface. Microwaves are invisible and can be as long as three feet. These waves are a kind of energy, like light. And like light, they bounce off surfaces. The way the waves bounced off the Venus' surface and back to the craft supplied information that the scientists used to estimate the temperature of various parts of the planet's surface. Bondarenko's team found that the lava flow was hotter than its surroundings---which may mean the lava flow is in the process of cooling. The scientists say the lava flow can't be very old because if it were, it would have cooled off enough that Magellan wouldn't have noticed the difference in microwaves. She adds that the flow appears in a 1978 view of the surface that a craft called the Pioneer Venus Orbiter captured. The best title for the passage may be " _ ". | [
"Warm lava on Venus",
"More volcanic eruptions on Venus",
"Venus is just like a big active volcano",
"Lava flows are first found on Venus"
] | null | A | |
mmlu_stem | mmlu_stem_2158 | When ice cream is left out of a freezer, the ice cream changes from a ___. | [
"solid to a gas",
"gas to a liquid",
"solid to a liquid",
"liquid to a gas"
] | null | C | |
mmlu_stem | mmlu_stem_3452 | Everyone knows what a needle is. Of course there are needles and needles. Needles for sewing machines, needles for injection , you name it. But few people think of the wonder a needle works in the hands of those who practice acupuncture . During the past ten years or so, I have been suffering from terrible headache. It seems to be getting from bad to worse these days . Last night I got a sudden pain in my head. It was so terrible that I could hardly bear it. Although I swallowed all kinds of pain-killers, I didn't feel any better, It seemed that there was nothing I could do but phone for a doctor. One of our neighbors happened to be with us. He was not a doctor, but he timidly offered his help, saying "Do you mind if I tried acupuncture on you? These needles may possibly do you some good." I agreed. In a moment, he had taken out a few needles from his purse. Without a moment's delay, he fixed a few needles into the skin on my head here and there, Before long, I felt thoroughly relieved. Just then, the doctor sped through my house and said, "Where is our patient?" "Sorry, Doctor, You are too late, It's killed!" I answered in delight. It's a miracle , isn't it? The sentences" You are too late. It's killed ." mean that | [
"the pain was killed because the doctor came late",
"the man was killed because the doctor came too late",
"before the doctor came the man's headache was already cured",
"it was too late and the man had gone way"
] | null | C | |
mmlu_stem | mmlu_stem_5833 | Eight-year-old Jesse Abrogate was playing in the sea late one evening in July 2001 when a 7-foot bull shark attacked him and tore off his arm. Jesse's uncle jumped into the sea and dragged the boy to the store. The boy was not breathing. His aunt gave him mouth-to-mouth resuscitation while his uncle rang the emergency services. Pretty soon, a helicopter arrived and flew the boy to hospital. It was a much quicker journey than the journey by road. Jesse's uncle, Vance Folsenzier, ran back into the sea and found the shark that had attacked his nephew. He picked the shark up and threw it onto the beach. A coastguard shot the fish four times and although this didn't kill it, the shark's jaws relaxed so that they could open them, and reach down onto its stomach, and pull out the boy's arm. At the Baptist hospital in Pensacola, Dr Lan Rogers spent eleven hours reattaching Jesse's arm. "It was a complicated operation," he said, "but we were lucky. If the arm hadn't been recovered in time, we wouldn't have been able to do the operation at all. What I means is that if they hadn't found the shark, well then we wouldn't have had a chance." According to local park ranger Jack Tomosvic, shark attacks are not that common. "Jesse was just unlucky" he says, "Evening is the shark's feeding time. And Jesse was in the area without lifeguards. This would never have happened if he had been in the area where swimming is allowed." When reporters asked Jesse's uncle how he had had the courage to fight a shark , he replied, "I was mad and you do some strange things when you're mad." What was the boy doing when the accident happened? | [
"Feeding a hungry shark",
"Jumping into a rough sea",
"Dragging a boy to the shore",
"Swimming in a dangerous area"
] | null | D | |
mmlu_stem | mmlu_stem_8510 | American scientists have developed the first material that repairs itself. The material is a form of plastic that has been engineered to fill breaks in its surface. Plastics are used today in everything. Scientists wanted to find a way to make objects made of plastic last longer. The researchers hope their new discovery can be used to make objects that are difficult or impossible to replace. The surface of plastic objects breaks over time. Very small breaks develop every time a plastic object is used. The researchers wanted to find out how to stop plastic from developing small breaks that weaken and destroy it. They found the answer in the chemical structure of plastic itself. The research team found a way to make plastic that contains very small balloons filled with monomer liquid. When the new plastic cracks, the monomer liquid is let out and flows into the crack. Thus the break is repaired. The repaired plastic has seventy-five percent of the strength of undamaged plastic. The new self-repairing plastic is not yet ready for production. But it has several possible uses. One could be in space vehicles where parts cannot be repaired or replaced. Another possible use might be in bridges. And it could be used in people, to replace bone joints that have become broken or damaged. The passage mainly talks about _ . | [
"plastic that repairs itself",
"the chemical structure of plastic",
"permanent material invented",
"small balloons that makes plastic stronger"
] | null | A | |
mmlu_stem | mmlu_stem_10673 | Nuclear radiation has a certain mystery, partly because it cannot be detected by human senses. It can't be seen or heard, or touched or tasted, even though it may be all around us. There are other things like that. For example, radio waves are all around but we can't detect them or sense them without a radio receiver. Similarly, we can't sense radioactivity without a radiation detector. But unlike common radio waves, nuclear radiation is not harmless to human beings and other living things. At very high levels, radiation can kill an animal or human being outright by killing masses of cells in important organs. Even the lowest levels can do serious damage. There is no level of radiation that is completely safe. If the radiation does not hit anything important, the damage may not be serious. This is the case when only a few cells are hit, and when they are killed outright. Your body will replace the dead cells with healthy ones. But if the few cells are only damaged, and if they reproduce themselves, you may be in trouble. They reproduce themselves in an unusual way. They can grow into cancer. Sometimes this does not show up for many years. This is another reason for some of the mystery about nuclear radiation. Serious damage can be done without the knowledge of the person at the time that damage has occurred. A person can be irradiated and feel fine, then die of cancer five, ten, or twenty years later as a result. A child can be born weak or easy to get serious illness as a result of radiation absorbed by its grandparents. Which of the following can be best inferred from the passage? | [
"The importance of protection from radiation cannot be overemphasized .",
"The mystery about radiation has been solved.",
"Cancer is only caused by radiation.",
"Radiation can hurt those who do know about its danger."
] | null | A | |
mmlu_stem | mmlu_stem_9138 | The koala is possibly one of the best known Australian animals, and is found in four states: Queensland, New South Wales, Victoria and South Australia. The word "koala" comes from an Australian aboriginal word meaning "no drink". Sometimes people call them "koala bears" but koala is not a bear. It belongs to a special group of Australian mammals, called marsupial . Female marsupials have a _ where the baby animals live after they are born. Koalas have soft, thick, grey or brown fur on their backs. The fur on the stomach is white. Koala that live in the south have thicker fur than those in the north because of the cold winters, whereas the koalas in the northern part of the country live in warm to hot weather most of the year so have thinner fur. A koala has a large hairless nose and round ears. Koalas don't have tails. Adult koalas measure between 7 and 14 kilograms. Koalas spend nearly all their time in the trees using their sharp, curved claws and long toes to climb about and to hold on to the tree branches. They sleep most of the day, and feed and move from tree to tree mainly at night. The reason koala sleep for much of the day is because their food eucalyptus leaves are very tough so they use a lot of energy to digest. Sleeping saves energy. Eucalyptus leaves are poisonous to almost every other animal. Koalas rarely drink water; they get water from the leaves they eat. Each koala has a home range made up of several trees that they visit regularly. They normally do not visit another koala's home trees except that a male is looking for a female to mate with. Why do koalas sleep much in the day? | [
"Their foods are poisonous",
"They want to save energy for the activities at night",
"They can't get enough energy from their tough foods",
"They can't get enough water from their leaves"
] | null | C | |
mmlu_stem | mmlu_stem_12748 | If you want to protect yourself,please remember the following ways of information. These ways will make you safe. Don't use earphones when you are running in the school yard or in the street. You will keep yourself from the outside world and can easily get into trouble. If a stranger is following you, please don't go home directly .You may be safer in the street than you are in your home or in a lift. If necessary, please go and get help from others. When you take a bus, don't sit alone. You should sit behind the driver or with friends. Don't sleep. Your school bag should be carried towards(,)the front of your body. Don't put it on your back. Don't play with matches or candles , because it may cause fire. If it causes fire, please call 119. We can sit _ on the bus. | [
"alone",
"behind the driver",
"in front of the driver",
"with strangers"
] | null | B | |
mmlu_stem | mmlu_stem_11982 | The Lionfish Invasion! Lionfish are popular saltwater aquarium fish all over the world, especially in the United States. Nowadays, they also live in Atlantic waters off the East Coast of the United States. These lionfish are what scientists call an invasive species or an "alien invader." Local divers off the coast of North Carolina were not expecting to see what they found one day in August 2002--the beautiful lionfish, common to the warm waters of the western Pacific, but unknown of the Carolina coast. They provided the first solid evidence that lionfish were in the Atlantic. A year later, scientists documented 19 lionfish sightings at eight locations along the North Carolina continental shelf. Then, lionfish were observed off the coasts of Florida, Georgia, and South Carolina, and even as far north as Long Island, New York! Between 2000 and 2003, lionfish sightings were reported at 16 different shipwrecks and natural hard bottom locations. During a summer 2004 research expedition, NOAA(The National Oceanic and Atmospheric Administration) scientists collected 155 lionfish at 19 different locations off the North Carolina coast alone. The jump in numbers and distributions over such a short time strongly indicates that the lionfish is reproducing in the Atlantic Ocean. If this is true, it's the first time that a western Pacific fish has populated the U.S. Atlantic coast. These lionfish were likely released on purpose when people no longer wanted them! The swift and warm Gulf Stream, which transported the floating lionfish eggs from Florida northward, helped the lionfish's Atlantic journey. In Florida waters and along the continental shelf near the Gulf Stream the temperatures are very similar to the lionfish's native waters. However, from north Florida upward, the waters along the coastline are too cold in the winter for lionfish to survive. Scientists expect them to survive the winter only at water depths greater than 120ft because this is where the Gulf Stream has influence all year long. Very importantly, the types of predators and competitors present in the Atlantic are very different from the native range of the lionfish. Generally, the lionfish have not been found to endanger marine ecosystems because they were not likely to survive long. What is the author's attitude towards the lionfish invasion? | [
"Serious.",
"Disapproving.",
"Optimistic.",
"Indifferent."
] | null | C | |
mmlu_stem | mmlu_stem_18540 | In your body, what two organs work together to make sure that oxygen gets to all the other organs of your body? | [
"Lungs and kidneys",
"Heart and lungs",
"Brain and kidneys",
"Heart and liver"
] | null | B | |
mmlu_stem | mmlu_stem_3908 | Statue of Liberty Basics: Statue of Liberty Phone:212-363-3200 Statue cruise phone:877-LADY-TIX Nearest subways to Statue of Liberty :4/5 to Bowling Green; N/R to Whitehall Street;1 to South Ferry (you must be in the first 5 cars of the train to exit at South Ferry). Follow the signs to Castle Clinton to buy tickets for the ferry to the Statue of Liberty. There is plenty of room for running around and relaxing on Liberty Island. For children 7-12 there is a Junior Ranger Program available. Pick up a free booklet on Liberty Island. Admission to Liberty State Park is free, but you must buy a ferry ticket to get there. Statue Cruises Ferry Ticket Prices: Adult:$13; Senior Citizens (62+) $10; children (4-12)$5; Children 3 and under free. You can buy your tickets for the ferry online at http//:www.statuecruises.come/ferry-service/welcome.aspx. Ferry ticket included with the New York Pass----- present New York Pass in Castle Clinton bookstore for ticket. Statue of Liberty Tour Hours Ferries to the island leave from 8:30 am to 4:30 pm. Liberty Island closes at 6 pm and the last ferry returns to Battery Park by 6:30. Schedules are updated and revised frequently, so please check the official ferry schedule. Statue of Liberty Tour Reservation Climb the Crown of the Statue of Liberty with a Crown Ticket, which costs an additional $3 and includes access to the Museum and Pedestal as well. Museum/ Pedestrian Tickets are free (with ferry ticket purchase). Order your tickets in advance: 877-LADY-TIX or online when you purchase your ferry ticket. Tour tickets are time specific. How much is the ferry fee for a family of two adults and two children aged 3 and 6? | [
"$ 26",
"$ 31",
"$32",
"$36"
] | null | B | |
mmlu_stem | mmlu_stem_20957 | A badger is birthed with behaviors that are | [
"learned",
"found",
"intuitive",
"useless"
] | null | C | |
mmlu_stem | mmlu_stem_7556 | What is the color1 of the universe? Astronomers had not answered this question, until two months ago. That is when two American astronomers reported on their study of all the light in the universe. They said that the universe would appear to the human eye to be a light greenish color1, called turquoise . Karl Glazebrook and Ivan Baldry of Johns Hopkins University in Baltimore, Maryland, reported their finding in January. They presented the research at a meeting of the American Astronomical Society. They said that finding the color1 of the universe was not part of their serious scientific research. They did it for fun. However, earlier this month, the scientists admitted to making a mistake. They said their finding was much more color1ful than it should have been. They now say the light from our universe is closer to white. It is more like a milky or creamy white color1. Their study attempted to show what people might see if they could observe the universe from far away. The scientists found the average color1 by combining light from about two-hundred-thousand star systems. Their information came from an observatory in New South Wales, Australia. These scientists and color1 engineers attempted to reproduce the result. Mark Fairchild of the Rochester Institute of Technology in New York was the first person to identify a mistake. He discovered a mistake in the computer software program used by the Johns Hopkins scientists. When the mistake was corrected, the results changed. The new color1 of the universe is much less color1ful. It is very close to white. The scientists have apologized for the mistake. They are now working with the Rochester Institute of Technology to produce more images of the color1 of the universe. They also asked for suggestions for a name for the new color1 of the universe. We can infer from the passage that _ . | [
".the color1 of the universe was not the main problem the scientists studied for.",
"the color1 of the universe is turquoise, but now it's turned into milky white gradually.",
"The new color1 of the universe hasn't been named now.",
"The mistakes of people's eyes leads to the mistakes of observation r... | null | C | |
mmlu_stem | mmlu_stem_11503 | Humans have long been interested greatly in the idea of being able to walk on water. Sadly, biological facts prevent us ever realizing this dream without artificial aid--we simply weigh too much, and all our weight pushes down through our relatively small feet, resulting in a lot of pressure that makes us sink. However, several types of animals can walk on water. One of the most interesting is the common basilisk Basilicus basilicus, a lizard native to Central and South America. It can run across water for a distance of several meters, avoiding getting wet by rapidly hitting the water's surface with its feet. The lizard will reach a speed of 20 steps per second to keep moving forward. For humans, we would need huge feet that we could bring up to our ears in order to create enough "hitting". But fortunately there is an alternative: cornflour . By adding enough of this common thickening agent to water (and it does take a lot), you can create a special mixture that doesn't behave like normal water. Now, if the surface of the water is hit hard enough, particles in the water get together for a moment to make the surface hard. Move quickly enough and put enough force into each step, and you really can walk across the surface of this adequately thick liquid of cornflour. Fun though all this may sound, it's still rather messy and better read about in theory than carried out in practice. If you must do it, then keep the water wings ready in case you start to sink--and take a bath afterward! What is the author's attitude toward the idea of humans' walking on water? | [
"It is risky but beneficial.",
"It is impractical though possible in thoery.",
"It is crazy and cannot become a reality.",
"It is interesting and worth trying."
] | null | B |
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