id stringlengths 9 18 | question stringlengths 4 4.81k | choices listlengths 2 13 | full_answer stringlengths 4 180 | dataset stringclasses 5
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|---|---|---|---|---|
mmlu_train_68141 | More and more Chinese people care for their own health. I come from England. I came to China five years ago. I began to learn cooking Chinese food from my father. When I was fifteen, I began to help my mother in the kitchen. My father is a very famous cook in Beijing. So he taught me many things about cooking. In the past three years, I never stopped learning cooking. When I saw a book called The disease eating out can be gone back again by eating (<<>> ), I began studying the book. .The writer of the book is Zhang Wuben. He said he was a famous nutritionist and well-known traditional Chinese doctor. He asked the people to eat eggplant and gram . In China, Zhang Wuben's book has been popular in the past few years. My father was invited to talk about the book in May, 2010. A large number of Chinese people believe they should eat eggplant and gram to be healthy. I have visited a lot of Chinese restaurants in Beijing and studied hundreds of restaurant menus. I talked to lots of doctors about eating and nutrition . They thought that Zhang Wuben's words _ the science. He told a lie. The fact is that it's important for us to eat a balanced diet and not just to eat eggplant and gram. Why did most of Chinese people believe to eat eggplant and gram to be healthy? | [
"Because the people think Zhang Wuben is a famous nutritionist and doctor.",
"Because the people like eggplant and gram best.",
"Because the people don't believe doctors.",
"Because hundreds of restaurants are closed."
] | A. Because the people think Zhang Wuben is a famous nutritionist and doctor. | mmlu_train |
mmlu_train_12703 | University -- the best days of my life! I made lots of friends in my student dorm, went to great parties, joined the debating society...and, well, I did some work too -- but I must admit my lecturers were very patient with my tardiness . It's easy to look back at our university days through rose-tinted spectacles but the truth is that when we first arrived on campus, most of us were out of our comfort zone. In fact, a survey of students at Imperial College London has revealed that 3 out of 4 students experience high levels of stress, or a mental health condition, during their time at college. The survey, completed by over a thousand students, also found that 70% of those that experience stress do so at least once a week, and 9% of students feel stressed constantly. Kirsty, a student at Exeter University, didn't enjoy her first days in college. She says: "When I first got to university I don't think I'd realized that I'd forgotten how to make friends. I'd been with the same school friends for seven years, and so I was trying to balance social success with academic success while learning how to look after myself at quite a young age." Dr Ruth Caleb of the counseling service at Brunel University in London has some tips that should make life easier for students before they set off for university. She says: "Certain things that I think it would be very helpful for students to have put in place are an ability to do the practical things of life - to do the washing, to do the cleaning and so on -- being able to cook. Budgeting is extremely important in university life." And Caleb adds: "You should learn how to spend time on your own comfortably." I graduated and learnt how to take care of myself the hard way. I hope that new students these days remember to acquire some life skills before they make the big jump. Which of the following tips are helpful or important EXCEPT _ according to Dr. Ruth Caleb? | [
"having the ability to cook",
"being able to do the cleaning",
"learning how to spend money on one's own",
"balancing social success and academic success"
] | D. balancing social success and academic success | mmlu_train |
arc_easy_818 | Which item is used for protection from chemical splashing? | [
"compass",
"hand lens",
"microscope",
"safety goggles"
] | D. safety goggles | arc_easy |
aquarat_9276 | If all of the telephone extensions in a certain company must be even numbers, and if each of the extensions uses all four of the digits 1, 2, 5, and 6, what is the greatest number of four-digit extensions that the company can have? | [
"4",
"6",
"11",
"12",
"24"
] | D. 12 | aquarat |
mmlu_train_94366 | Samuel investigated the effect of temperature on the growth of snapdragons. He recorded the results from the investigation and found that snapdragons do not grow well in low temperatures. What is the purpose of this conclusion in the scientific process? | [
"It helps to organize the data.",
"It helps to evaluate the hypothesis.",
"It helps to prepare for an investigation.",
"It helps to collect information from observations."
] | B. It helps to evaluate the hypothesis. | mmlu_train |
arc_easy_1701 | Which event would most likely result in more food for organisms that are scavengers? | [
"Fish die and sink to the bottom of a pond.",
"Trees take up and store water with roots.",
"Beavers build a new dam and lodge.",
"Plants get more sunshine and water."
] | A. Fish die and sink to the bottom of a pond. | arc_easy |
aquarat_10155 | If it would take one machine 8 minutes to fill a large production order and another machine 12 minutes to fill the same order, how many minutes would it take both machines working together, at their respective rates, to fill the order? | [
"4 4/5",
"5",
"5 5/11",
"5 1/2",
"11"
] | A. 4 4/5 | aquarat |
arc_easy_621 | A difference between the oceanic crust and the continental crust is that the oceanic crust is | [
"composed chiefly of sedimentary rocks.",
"more dense than the continental crust.",
"older than the continental crust.",
"continually being created."
] | B. more dense than the continental crust. | arc_easy |
mmlu_train_75177 | Early to bed and early to rise makes a man healthy, wealthy and wise. This is an old English saying . It means that we should go to bed early at night and get up early in the morning. If we do, we shall be healthy. We shall also be rich and clever. Is this true? Perhaps it is. The body must have enough sleep. Children of your age need ten hours' sleep every night. If you go to bed late, you can't have enough sleep. Then you can't think carefully and your homework will be wrong. You will not be wise and you may not become wealthy! Some people go to bed late at night and get up late in the morning. This is not good for them. We should sleep at night when it is dark. The dark helps us sleep well. When the daylight comes, we should get up. This is the time for exercise. If the body is not used, it will become weak. Exercise keeps it strong. Exercise helps the blood to move around inside the body. Blood takes nutrition to all parts of our bodies. The brains in our heads also need blood. We think with our brains. If we keep our bodies healthy, and take exercise, we can think better! Our bodies also need air to breathe . Without air we will die. Get up early in the morning and we can have plenty of clean, fresh air. That will keep us healthy and happy. ,. If you want to make your body strong, you should _ . | [
"exercise often",
"have enough sleep",
"go to bed early",
"get up early"
] | A. exercise often | mmlu_train |
mmlu_train_66414 | In today's world, we rely on computers as never before.They are used for everything from ordering a pizza to running hospitals and military defense systems.Banking and credit card information is stored and accessed by computers.So what happens when a computer gets infected with a virus? One effect is that people's access to their e-mail accounts is cut off.A more serious possible consequence is that billions of dollars could be lost. A virus is a computer program that copies itself onto other programs and infects them. Similar to an easily spread disease, a computer virus goes from computer to computer, either adding to or changing the tasks a program is designed to do. The first computer viruses were created in the mid '80s and had varying effects.Some caused files to be deleted, or made the letters on the screen appear to fall off.Others displayed a specific message once the computer was turned on. Viruses today are much more widespread and dangerous than ever before.Perhaps the most damaging to date has been the "I Love You" virus."I Love You" appeared in May 2000 and has possibly been the most destructive virus in terms of monetary loss. The virus is released when an attachment to a fake e-mail message is opened.By changing the names of files on computers, "I Love You" makes them difficult to access.It also searches for important personal information, including passwords, which it sends to a web site for others to see. It is estimated that more than 45 million people in 20 countries have had their computers infected by the "I Love You" virus.Some say the cost of repair and lost business has been more than US$10 billion. If you own a computer, it is important to keep it in good health by installing an anti-virus program.If updated frequently, it will protect your e-mail access-not to mention your wallet. How does "I Love You" virus spread? | [
"It is spread when an e-mail account is opened.",
"It is spread through on-line chatting.",
"It is spread through e-mail.",
"It spreads from web site to web site."
] | C. It is spread through e-mail. | mmlu_train |
mmlu_train_6579 | The Internet brings us many advantages. With the Internet, people can send and receive emails. On the Internet, people can skim over news. Using the Telnet, the user anywhere on the Internet can log into any other machine on which he has an account. It is possible to use the FTP program to copy files from one machine on the Internet to another. But the Internet also brings us troubles. Internet use seems to cause a fall in psychological health, according to research at Carnegie Mellon University. Even people who spent just a few hours a week on the Internet experienced more depression and loneliness than those who logged on less often, the twoyear study showed. And it wasn't that people who were already feeling bad spent more time on the Internet, but that using the Net actually seemed to cause the bad feelings. Researchers are puzzled over the results, which were completely opposite to what they had expected. They expected that the Net would prove socially healthier than television, since the Net allows users to choose their information and to communicate with others.The fact that Internet use reduces time used for family and friends may be the reason for the drop in health, researchers said. Faceless, bodiless"virtual" communication may be less psychologically satisfying than actual conversations, and the relationships formed through it may not be so deep. Another possibility is that exposure to the wider world through the Net makes users less satisfied with their lives. "But _ it's _ important _ to _ remember _ this _ is _ not _ about _ the _ technology; _ it's _ about _ how _ it _ is _ used,"said one of the researchers. "It really points to the need for considering social factors when you design new inventions." The writer mainly wants to tell us that _ . | [
"the Internet can bring people many advantages",
"the Internet use may cause psychological problems",
"the Internet users are not satisfied with their lives",
"we shouldn't use the Internet"
] | B. the Internet use may cause psychological problems | mmlu_train |
aquarat_37390 | Anne bought doughnuts for a class breakfast party. She bought 15 chocolate doughnuts, 12 coconut doughnuts, and 14 jam-filled doughnuts. How many doughnuts did Anne buy in all? | [
"41",
"36",
"39",
"21",
"11"
] | A. 41 | aquarat |
aquarat_25546 | In a certain series, each term is m greater than the previous term. If the 14th term is 600 and the 11th term is 540, what is the first term? | [
"40",
"80",
"140",
"200",
"240"
] | C. 140 | aquarat |
arc_easy_1187 | A scientist studies how weathering and erosion can change the shape of a mountain. The scientist needs to collect information over what period of time to gather the most accurate information? | [
"days",
"weeks",
"months",
"years"
] | D. years | arc_easy |
mmlu_train_82560 | My name is Donna and I have two sisters, Liza and Rita. We like hamburgers and milk for lunch. Lisa and I like chicken, but Rita doesn't. I don't like noodles for breakfast, but Liza and Rita do. I like porridge for breakfast. We really like vegetables and eggs for dinner. _ like hamburgers for lunch. | [
"Donna and Liza",
"Rita and Donna",
"Liza and Rita",
"Donna, Liza and Rita"
] | D. Donna, Liza and Rita | mmlu_train |
mmlu_train_93173 | Which group of organisms would all be found living in a tropical rain forest? | [
"Lizards, insects, cacti, kangaroos",
"Vines, palm trees, tree frogs, monkeys",
"Evergreens, moose, weasels, mink",
"Lichens, mosses, caribou, polar bears"
] | B. Vines, palm trees, tree frogs, monkeys | mmlu_train |
aquarat_27799 | A cistern is filled by a tap in 7 1/2 hours. Due to leak in the bottom of the cistern, it takes half an hour longer to fill the cistern. If the cistern is full how many hours will it take the leak to empty it? | [
"80",
"100",
"120",
"140",
"160"
] | C. 120 | aquarat |
mmlu_train_47713 | Your House Will Take Care of You In Old Age Have you ever thought what your life would be like in old age? Everyone talks about the "aging" society with large numbers of elderly people needing home care. Now German researchers have set up a "smart"house, programmed to help the elderly live at home with dignity. Scientists at Germany's Fraunhofer Institute say the house combines existing technology with future-oriented technology. For example, the "smart"bathroom has a touch screen mirror that can remind people to take their medicine, wash their hands or brush their teeth. The hardware behind Fraunhofer's electronic bathroom is not new, and the software runs on a regular personal computer. When the medicine cabinet is opened, a display in the middle of the mirror tells the person how many pills to take. The mirror is linked to a care provider, who can remotely check whether a patient at home is actually taking medicine and brushing his or her teeth. As many elderly people have arthritic conditions that make it difficult to operate water taps, the mirror also has displays that turn the water tap on or off or control the water temperature. The bathroom is only the start. Kitchens, bedrooms and all other parts of the intelligent"home will become "user-friendly"to meet all kinds of individual needs. Sensors in doors, toilets, taps, light switches and carpets detect every activity and record them electronically. Doctors or care staff can see from the computer records what personal hygiene tasks have been completed, how often the elderly person visits the bathroom or uses the toilet. In case of an emergency, the computer automatically alerts the chosen contact person or calls the care center. How is the passage mainly developed? | [
"By inferring.",
"By comparing.",
"By listing examples.",
"By introducing a practical method."
] | C. By listing examples. | mmlu_train |
mmlu_train_76530 | In the universe,as we all know,there is the sun,the moon,the earth and a good manystars.Through our geography lessons,we know the earth goes around the sun,and the moon goes around the earth.We have day and night because the earth keeps turning all the time.When our part of the earth turns to the sun,it is day.When our part of the earth turns away from the sun,it is night. Just because the moon is closer to the earth than the sun, it looks much bigger than the sun. Big things will look smaller when they are further, and small things also look bigger when they are nearer. The sun is big enough to give out very strong light. The moon can't give any light at all, but it looks quite bright, too. Why? In fact, the light from the moon comes from the sun. The moon looks much bigger and brighter than the stars. But actually the stars are much bigger and brighter than the moon.They look smaller than the moon also because they are further away from the earth. There are many other planets in the universe. But of all the planets, only on the earth there are living things and people can only live on the earth, too. But at 9:00 a.m. on October 15th,2003, Chinese pilot Yang Liwei was sent up to space. He stayed there for 21 hours.It was the first time for Chinese to get into space. When our part of the earth turns away from the sun, the other part of the earth is _ . | [
"night",
"day",
"evening",
"Sunday"
] | B. day | mmlu_train |
aquarat_51048 | A number consists of two digits. If the digits interchange places and the new number is added to the original number, then the resulting number will be divisible by : | [
"5",
"7",
"9",
"11",
"13"
] | D. 11 | aquarat |
mmlu_train_16162 | The largest bird that cannot fly also happens to be the largest living bird in the world. This is the huge North African ostrich . When the male is fully grown, he reaches a height of nearly eight feet and many weigh close to three hundred pounds. His wings are very small and the wing feathers are very soft, and therefore he does not fly. You have probably heard the old saying about "the foolish ostrich burying his head in the sand". Well, the ostrich is not nearly as foolish as he is said to be. In the daytime, when the hen is sitting on the eggs, she does not want to be seen; instead of sticking her long neck up into the air, she bends her neck and head down. That way, she can best protect the eggs and herself. Because the ostrich cannot fly up into the air to escape from danger on the ground, he has to remain alert at all times. Luckily, he has very good eyesight and hearing, so he can stop danger in time to run away. The ostrich can run so fast that it almost seems as if he is flying. Sometimes, when a person has a small appetite , we say that he "eats like a bird". Of course, that bird is not the ostrich! An ostrich will eat anything under the sun. When an ostrich died in a zoo, scientists cut it open to see what he had eaten. Here are some of the things found in its stomach: three pieces of wood, part of a film roll, a French coin, four pennies, and so on. Ostriches bury their heads in the sand because they _ . | [
"are too lazy to do anything",
"can avoid being attacked",
"can relax by doing so",
"are very shy"
] | B. can avoid being attacked | mmlu_train |
arc_challenge_31 | Which of these human activities does not contribute to the extinction of species? | [
"hunting",
"habitat destruction",
"restoration ecology",
"introduced nonnative species"
] | C. restoration ecology | arc_challenge |
aquarat_43069 | A women paid $1650 a year in interest on a loan with an annual rate of 11%. How w\much more money could she have borrowed for the same amount of interest if she had been able to get a loan amount with an annual rate of 10%? | [
"$165",
"$1500",
"$1815",
"$ 15000",
"$16500"
] | B. $1500 | aquarat |
mmlu_train_4566 | As more people have moved to the beach, the sea turtle population has decreased. Which is most likely the cause of this decrease? | [
"tropical storms",
"increase in predators",
"habitat loss",
"warmer temperatures"
] | C. habitat loss | mmlu_train |
arc_challenge_803 | Which layers of Earth are mostly made of solid material? | [
"inner core and outer core",
"crust and inner core",
"crust and mantle",
"mantle and outer core"
] | B. crust and inner core | arc_challenge |
aquarat_28069 | Teams A, B, C,D and E were in a baseball tournament. Each team played each other team once. Team A beat team D. Teams A, B and C won the exact same number of games. How many games did team D lose? | [
"5 games",
"4 games",
"3 games",
"2 games",
"1 game"
] | C. 3 games | aquarat |
aquarat_23738 | An alloy is to contain copper and zinc in the ratio 7 : 3. The zinc required (in kg) to be melted with 35 kg of copper, is? | [
"10 and 2/3",
"15",
"9 and 2/3",
"9",
"10"
] | B. 15 | aquarat |
aquarat_25257 | A larger cube has 125 cubic inch as a volume and in the cube there are 125 smaller cubes such that their volume is 1 cubic inch. What is the difference between the surface areas’ sum of the 125 smaller cubes and the surface area of the larger cube, in square inch? | [
"54",
"600",
"81",
"108",
"120"
] | B. 600 | aquarat |
aquarat_37247 | What is the sum of two consecutive even numbers, the difference of whose squares is 84? | [
"42",
"44",
"48",
"56",
"none"
] | A. 42 | aquarat |
mmlu_train_71343 | Healthy eating starts with learning new ways to eat,such as adding more fresh fruit and vegetables,and _ foods that have lots of fat, salt and sugar. Healthy eating will help you feel your best and give you plenty of energy.It can help you deal with stress better. However,healthy eating isn't a diet . If you eat too little when you diet, you may eat more after you stop dieting. Eating a healthy, balanced diet is very satisfying. And if you match that with more exercise, you may be able to have a healthier weight. What can you do to make healthy eating habit? First, think about your reasons for heathier eating. Do you want to improve your health?Do you want to feel better? Next, think about small changes that you can make. Then set some goals and go for them. Set an easy goal you can reach.,like having a piece of fruit each day. Set a long-term goal too, such as having one meal not including meat or fish every week.What's more, having help from others is important . After you get more help, it'll be easier for you to make changes. Have family and friends help you make meals and give you useful advice on healthy cooking . If you need more help, talk to your doctor or look online for groups that care about healthy eating and tell success stories . The writer mentions people can get help from the following EXCEPT | [
"friends",
"TV programs",
"doctors",
"the Internet"
] | B. TV programs | mmlu_train |
mmlu_train_93065 | Compared to other stars in our galaxy, which is the best description of our Sun? | [
"larger size, higher temperature",
"smaller size, higher temperature",
"larger size, average temperature",
"average size, average temperature"
] | D. average size, average temperature | mmlu_train |
arc_easy_614 | Which of the following best explains why the Sun appears to move across the sky every day? | [
"The Sun rotates on its axis.",
"Earth rotates on its axis.",
"The Sun orbits around Earth.",
"Earth orbits around the Sun."
] | B. Earth rotates on its axis. | arc_easy |
mmlu_train_34903 | Cat has bright future By day he is just a normal cat but when the lights go out, he glows in the dark. Scientists have genetically modified a cat as part of an experiment that could lead to treatments for diseases. Named Mr. Green Genes, he looks like a sixmonthold cat but, under ultraviolet light, his eyes, gums and tongue glow green. That is the result of a genetic experiment at the Audubon Center for Research of Endangered Species in New Orleans, US. Mr. Green Genes is the first fluorescent cat in the US and probably the world, said Betsy Dresser, the center's director. The researchers made him so they could learn whether a gene could be introduced harmlessly into a cat's genetic sequence. If so, it would be the first step in a process that could lead to the development of ways to treat diseases via gene therapy. The gene, which was added to Mr. Green Genes'DNA, has no effect on his health, Ms Dresser said. Cats are ideal for this project because their genetic makeup is similar to that of humans, said Dr Martha Gomez, a scientist at the center. To show that the gene went where it was supposed to go, the researchers settled on one that would glow. The gene"is just a marker", said Leslie Lyons, an assistant professor at the University of California, Davis. Lyons is familiar with the center's work. "The glowing part is the fun part,"she said. Glowing creatures made international news earlier this month when the Nobel Prize in Chemistry was awarded to three scientists who had discovered the gene through their work with jellyfish . From the passage we can see that _ . | [
"Mr Green Genes was made by researchers to treat diseases",
"the cat named Mr Green Genes can glow when it is dark",
"Mr Green Genes is the first fluorescent cat in the world",
"Mr Green Genes is a cat of seven months old up to now"
] | B. the cat named Mr Green Genes can glow when it is dark | mmlu_train |
arc_easy_1260 | The theory of continental drift states that the land masses called continents were once closer together and have drifted apart over time. Which circumstance is the strongest evidence in support of this theory? | [
"the migration patterns of birds",
"the periodic climate changes of Earth",
"the large variety of animals on each continent",
"the similarity of fossils on different continents"
] | D. the similarity of fossils on different continents | arc_easy |
mmlu_train_11742 | As motorways become more and more blocked up with traffic, a new generation on flying cars will be needed to ferry people along skyways. That is the conclusion of engineers from the US space agency and aeronautical firms, who _ future commuters traveling by "skycar". These could look much like the concept skycar shown in the picture, designed by Boeing research and development. However, such vehicles could be some 25 years from appearing on the market. Efforts to build flying vehicles in the past have not been very successful. Such vehicles would not only be expensive and require the skills of a trained pilot to fly, but there are significant engineering challenges involved in developing them. "When you try to combine them you get the worst of both worlds: a very heavy, slow, expensive vehicle that's hard to use," said Mark Moore, head of the personal air vehicle(PAV) division of the vehicle systems program at Nasa's Langley Research Center in Hampton, US. But Boeing is also considering how to police the airways and prevent total pandemonium -if thousands of flying cars enter the skies. "The neat, gee-whiz part is thinking about what the vehicle itself would look like," said Dick Paul, a vice president with Phantom Works, Boeing's research and development arm. "But we're trying to think through all the consequences of what it would take to deploy a fleet of these." Past proposals to solve this problem have included artificial intelligence systems to prevent collisions between air traffic. Nasa is working on flying vehicles with the initial goal of transforming small plane travel. Small planes are generally costly, loud, and require months of training and lots of money to operate, making flying to work impractical for most people. But within five years, Nasa researchers hope to develop technology for a small plane that can fly out of regional airports, costs less than $100,000(PS55,725), is as quiet as a motorcycle and as simple to operate as a car. Although it would not have any road-driving capabilities, it would bring this form of travel within the grasp of a wider section of people. The new technology would automate many of the pilot's functions. This Small Aircraft Transportation System(Sats) would divert pressure away from the "hub-and-spoke " model of air travel. Hub-and-spoke refers to the typically US model of passengers being processed through large "hub" airports and then on to secondary flights to "spoke" airports near their final destinations. When engineers develop the skycars, they have to deal with the following difficulties except _ . | [
"how to fly out of regional airports",
"how to prevent the disorder of the airways",
"how to reduce expenses and the vehicle's weight",
"how to fly the skycars to enter skies"
] | D. how to fly the skycars to enter skies | mmlu_train |
aquarat_3002 | If a, b and c are even integers, which of the following could be the value of a^2 + b^2 + c^2? | [
"a) 36",
"b) 38",
"c) 42",
"d) 46",
"e) 50"
] | A. a) 36 | aquarat |
mmlu_train_62740 | American beekeeping operations have been hit hard by what scientists call colony collapse disorder(C.C.D.). Almost half of their worker bees have disappeared during the past season. C.C.D. has also been reported in Israel, Europe and South America. Bees fly away from the hive and never return. Sometimes they are found dead; other times they are never found. Many crops and trees depend on pollination by bees to help them grow. A new report says virus may be at least partly responsible for the disorder in honey bee colonies in the United States. This virus is called Israeli acute paralysis virus. It was first identified in Israel in 2004. Ian Lipkin at Columbia University in New York and a team reported the new findings in Science magazine. Doctor Lipkin says the virus may not be the only cause. He says it may work with other causes to produce the collapse disorder. The team found the virus in colonies with the help of a map of honey bee genes that was published last year. They examined thirty colonies affected by the disorder. They found evidence of the virus in twenty-five of them, and in one healthy colony. The next step is further testing of healthy hives. The researchers suggested that the United States may have imported the disorder in bees from Australia. They say the bees may carry the virus but not be affected. The idea is that unlike many American bees, the ability of Australian bees to fight disease has not been hurt by the varroa mite . This insect attacks honey bees, which could make the disorder more likely to affect a hive. Australian bee producers reject these suspicions. And some researchers suspect that bee production in the United States is down mainly because of the weather. Honey bees gather nectar from flowers and trees. The sweet liquid gives them food and material to make honey. But cold weather this spring in the Midwest reduced the flow of nectar in many flowers. Many bees may have starved. Dry weather in areas of the country could also be playing a part. Wayne Esaias is a NASA space agency scientist who keeps bees in his free time. He lives in central Maryland, where he has found that flowers are blooming a month earlier than they did in 1970, which may be partly responsible for the disorder. Wayne Esaias is organizing a group of beekeepers to document nectar flow around the country. We can infer from the passage that _ . | [
"Israeli acute paralysis virus should be responsible for the disorder",
"the solution to the bee disorder will be found eventually",
"American bees are more likely to defend themselves than Australian bees",
"the crop and plant production in U.S may be influenced by the bee disorder"
] | D. the crop and plant production in U.S may be influenced by the bee disorder | mmlu_train |
mmlu_train_90182 | During the day we work and play, and at night we sleep. Our bodies rest while we are sleeping. In the morning we are ready to work and play again. When we are asleep, our bodies grow most. When children feel tired and angry, they usually need more sleep. We can get our lessons better, and we feel better, too, when we have enough sleep. Boys and girls, eight or nine years old, need ten hours of sleep every night. Our bodies need plenty of air when we sleep. If we do not get enough fresh air we wake up feeling tired. While in bed we must not cover our heads. If we do, our lungs will not get enough fresh air. If we open our windows at night we can have plenty of fresh air. Cool air is better than warm air. Boys and girls must get plenty of sleep if they want to grow and be strong. Which is the best air for us? _ air. | [
"Hot",
"Cool",
"Warm",
"Dry"
] | B. Cool | mmlu_train |
mmlu_train_8013 | For hundreds of millions of years, turtles have struggled out of the sea to lay their eggs on sandy beaches, long before there were nature documentaries to celebrate them, or GPS satellites and marine biologists to track them, or volunteers to hand-carry the hatchlings down to the water's edge lest (for fear that) they become disoriented by headlights and crawl towards a motel parking lot instead. A formidable wall of bureaucracy has been erected to protect their prime nesting on the Atlantic coastlines. With all that attention paid to them, you'd think these creatures would at least have the gratitude not to go extinct (die out). But Nature is indifferent to human notions of fairness, and a report by the Fish and Wildlife Service showed a worrisome drop in the populations of several species of North Atlantic turtles, notably loggerheads, which can grow to as much as 400 pounds. The South Florida nesting population, the largest, has declined by 50% in the last decade, according to Elizabeth Griffin, a marine biologist with the environmental group Oceana. The figures prompted Oceana to petition the government to upgrade the level of protection for the North Atlantic loggerheads from "threatened" to "endangered"-- meaning they are in danger of disappearing without additional help. Which raises the obvious question: what else do these turtles want from us, anyway? It turns out, according to Griffin, that while we have done a good job of protecting the turtles for the weeks they spend on land (as egg-laying females, as eggs and as hatchlings), we have neglected the years spend in the ocean. "The threat is from commercial fishing," says Griffin. Trawlers (which drag large nets through the water and along the ocean floor) and longline fishers (which can deploy thousands of hooks on lines that can stretch for miles) take a heavy toll on turtles. Of course, like every other environmental issue today, this is playing out against the background of global warming and human interference with natural ecosystems. The narrow strips of beach on which the turtles lay their eggs are being squeezed on one side by development and on the other by the threat of rising sea levels as the oceans warm. Ultimately we must get a handle on those issues as well, or a creature that outlived the dinosaurs will meet its end at the hands of humans, leaving our descendants to wonder how creature so ugly could have won so much affection. What constitutes a major threat to the survival of turtles according to Elizabeth Griffin? | [
"Their inadequate food supply.",
"Unregulated commercial fishing.",
"Their lower reproductively ability.",
"Contamination(pollution) of sea water"
] | B. Unregulated commercial fishing. | mmlu_train |
arc_challenge_775 | Which substance should a student apply to the skin if he or she gets splashed with an acid? | [
"water",
"vinegar",
"salt",
"formaldehyde"
] | A. water | arc_challenge |
mmlu_train_38298 | Why did the chicken cross the road? To get to the other side. Most people know this joke. But recently, some people have been much more worried about how the grizzly bear and mountain lion can cross the road. " Millions of animals die each year on the U. S. roads, " the Federal Highway Administration reports. In fact, only about 80 ocelots , an endangered wild cat, exist in the U. S. today. The main reason? Roadkill. "Eco-passages" may help animals cross the road without being hit by cars. They are paths both over and under roads. " These ecopassages can be extremely useful,so that wildlife can avoid road accidents ," said Jodi Hilty of the Wildlife Protection Society. But do animals actually use the eco-passages? The answer is yes. Paul Beier of Northern Arizona University found foot marks left by mountain lions on an eco-passage that went under a highway. This showed that the lions used the passage. Builders of eco-passages try to make them look like a natural part of an area by planting trees on and around them. Animals seem to be catching on. Animals as different as salamanders and grizzly bears are using the bridges and underpasses. The next time you visit a park or drive through an area with a lot of wildlife, look around. You might see an animal over-pass ! From the passage, we know an eco-passage is _ . | [
"an underground path for cars",
"a fence built for the safety of the area",
"a path for animals to cross the road",
"a bridge for animals to get over a river"
] | C. a path for animals to cross the road | mmlu_train |
mmlu_train_94258 | When using more than the recommended amounts of pesticide on farmland, yards, and gardens, what is most likely to occur? | [
"Higher levels of pesticide may be less effective.",
"The pesticides may break down quickly.",
"Water supplies can be contaminated by pesticide runoff.",
"The pesticide will increase the plant production."
] | C. Water supplies can be contaminated by pesticide runoff. | mmlu_train |
aquarat_43947 | The sum an integer N and its reciprocal is equal to 78/15. What is the value of N? | [
"3",
"4",
"5",
"6",
"7"
] | C. 5 | aquarat |
aquarat_30909 | The cost price of 25 books is the same as the selling price of ’X’ books. If the profit is 25%, then the value of X is ? | [
"12.8",
"18",
"16",
"15",
"14"
] | A. 12.8 | aquarat |
arc_easy_1926 | Scientists who have studied global climate changes have found that the average temperature of Earth has risen. There has also been an increase in the accumulation of atmospheric greenhouse gases. What is the goal of the scientific community in collecting this type of data? | [
"to understand how greenhouse gases are related to global warming",
"to decrease the temperature using fossil fuels",
"to change public attitude on using natural resources",
"to increase the amount of ice in the Arctic"
] | A. to understand how greenhouse gases are related to global warming | arc_easy |
mmlu_train_86214 | Sing the Language You're Learning How can you remember a song from your childhood to this day? Why do your teachers use songs to teach you English? It seems there is a scientific reason for this. Researchers are now studying the relationship between music and remembering a foreign language. They find that remembering words in a song is the best way to remember even the most difficult language. "Singing could be a new way of learning a foreign language. The brain likes to remember things when they are used in a _ and meaningful way", said Dr, Karen Ludke. The findings may help those who have difficulties learning foreign languages. On his blog, Dr. Ludke writes, "A listen-and-repeat singing method can support foreign language learning, and opens the door for future research in this area." Many language teachers know the value of using music and singing. Hua Zhuying, a teacher at a Chinese language school in Washington, D.C. depends heavily on songs in teaching Chinese. She says, "I use music all the time to teach children Chinese. For little kids usually we use the music. Not only does it work, but it is fun for kids." "Sometimes, I think if I were taught English that way, maybe I could speak much better English than now," Hua Zhuying adds. Our brain likes music, especially for remembering. So, if you're still struggling in learning a language, why not try singing it out ? Dr. Ludke believes that foreign language learning can be supported by _ . | [
"using the listen-and-repeat singing method",
"listening to all kinds of famous music",
"writing songs with the language",
"reading the lyrics again and again"
] | A. using the listen-and-repeat singing method | mmlu_train |
mmlu_train_54537 | Does eating a good breakfast improve school study? A study of more than 1,000 pupils in the city of Lawrence suggests it does. Youngsters who took part in the breakfast program improved their scores in the tests much more than those who didn't. Among those who attended the program, fewer were found late for school than those who didn't. And much fewer were found absent from their classes. "Starting the day with a meal appears to be quite helpful," says Amy Sampson, a research professor, who carried out the experiment on the students for a year. Students who miss breakfast may be losing out on important nourishment in fruit, milk, bread and so on. If you are in a hurry in the morning, get you some pieces of bread with some fruit or yogurt. In that case, you won't have to go to the selling machines for some chips or candy bars. According to the passage, which of the following is NOT true? | [
"Over 1,000 pupils took part in the experiment.",
"The experiment lasted a year.",
"A good breakfast can improve school study.",
"A good breakfast means eating a lot ."
] | D. A good breakfast means eating a lot . | mmlu_train |
mmlu_train_79396 | Now, it may be difficult to predict the future, but many people believe that we will live on Mars by the year 2100. Our own planet, Earth, is becoming more and more crowed and polluted. Well, what problems will we need to solve before we prepare to go to Mars? First of all, transport should be much better. At present, humans need to spend months going to Mars by spaceship. However, by 2100, spaceship can travel at half the speed of light. It might take us two or three days to get there! Secondly, humans need food, water and air to live. Scientists should develop plants that can be grown on Mars. These plants will produce the food, water and air that we need. However, there is no answer for all the problems now. There is also a problem for us to live on Mars. Mars attracts us much less than the Earth does. This will be dangerous because we could easily jump too high and fly slowly away into space there. We will have to wear special shoes to make ourselves heavier. In some ways, life on Mars may not be better than that on the earth today. Food will not be the same --meals will probably be in the form of pills and will not be as delicious as they are today. Also, space travel will probably make many people feel very uncomfortable. So far, how long will it take us from the earth to Mars by spaceship? | [
"Two or three days.",
"A few days.",
"A few months.",
"A few years."
] | C. A few months. | mmlu_train |
mmlu_train_62917 | Glynis Davis: I first piled on the pounds when I was in the family way and I couldn't lose them afterwards. Then I joined a slimming club. My target was 140 pounds and I lost 30 pounds in six months. I felt great and people kept saying how good I looked. But Christmas came and I started to slip back into my old eating habits. I told myself I'd lose the weight at slimming classes in the new year... but it didn't happen. Instead of losing the pounds, I put them on. I'd lost willpower and tried to believe that the old bag of fish and chips didn't make any difference -- but the _ don't lie. Roz Juma: To be honest, I never weigh myself any more. I've learnt to be happy with myself. It seemed to me that I would feel sorry about every spoonful of tasty food that passed my lips. My idea is simple. You shouldn't be too much thinking about food and dieting. Instead, you should get on with life and stop dreaming of a super thin body. This is obviously the size I'm meant to be and, most of all, I'm happy with it. Lesley Codwin: I was very happy at winning Young Slimmer of the year. I'd look in the mirror unable to believe this slim lady was me! That might have been my problem -- perhaps from then on I didn't pay any attention to myself. Winning a national competition makes everything worse, though. Because you feel the eyes of the world are fixed upon you. I feel a complete failure because I've put on weight again. Ros Langfod: Before moving in with my husband Gavin, I'd always been about 110 pounds, but the pleasant housework went straight to my waist and I put on 15 pounds in a year. Every so often I try to go on a diet... I'm really good in a few days, then end up having the children's leftovers or eating happily chocolate -- my weakness. I'd like to be slim, but right now my duty is the children and home. I might take more exercise when my kids are older. What do you think the four women were talking about? | [
"Different diets they prefer.",
"Their life after marriage.",
"Tex books for students.",
"Their own slimming matter."
] | D. Their own slimming matter. | mmlu_train |
aquarat_13615 | A rectangular tiled patio is composed of 40 square tiles. The rectangular patio will be rearranged so that there will be 2 fewer columns of tiles and 4 more rows of tiles. After the change in layout, the patio will still have 40 tiles, and it will still be rectangular. How many rows are in the tile patio before the change in layout? | [
"5",
"6",
"10",
"13",
"28"
] | B. 6 | aquarat |
aquarat_31728 | Can you find the missing number in the sequence given below?
10 17 24 11 18 ? 12 19 26 13 20 27 | [
"25",
"23",
"20",
"18",
"19"
] | A. 25 | aquarat |
mmlu_train_20640 | "How's the basketball coming on?" I put down my drink and looked across at the next table. I was curious about that because both the man and the woman were at least 65. "Oh, I'm not playing much basketball these days," the woman replied. "But I'm getting much better at golf." What's this, I thought. I opened my packet of crisps, thoughtfully. "I'm still pretty hopeless at chess, I'm afraid," the man said. "It beat me on level one this morning." _ . These two were the proud owners of computer games. It's very likely that one of the results of the development of the silicon chip will be that a lot of people will have more exciting ways to spend their leisure time. It already has. Space invader machines are now a familiar sight everywhere. A lot of people play them, and some, particularly school children, get remarkably high scores. How, one wonders, do they find the time (and money) to become so good? If you have your own computers, the possibilities are endless. You can play any active sports without stepping out of your living room. You can become an expert at chess or backgammon without ever playing with another human being. Indeed, human beings aren't needed at all. So, what of the future? Will we see school children stealing or even robbing to feed space invader machines? Will football grounds lie empty as families sit at home playing video football, or watching the national video football championship? Perhaps, it won't go that far. But we won't have to wait long for the Video Olympics. I'm sure of that. Back in the pub, I stood up, took out 20 pence, and went over to the space invader machine. I may not be much good at beating computers at backgammon, but any space invaders who arrive on Earth anywhere near me had better watch out. The reason why the writer felt curious about the talk between the couple was that _ . | [
"he thought they were too old to play basketball",
"they looked young for their age",
"the old seldom went to the bar",
"he didn't believe they played basketball so well"
] | A. he thought they were too old to play basketball | mmlu_train |
aquarat_13412 | The average weight of a group of boys is 20 kg. After a boy of weight 32 kg joins the group, the average weight of the group goes up by 1 kg. Find the number of boys in the group originally ? | [
"12",
"11",
"18",
"24",
"10"
] | B. 11 | aquarat |
aquarat_6710 | Two brothers were expected to return here on the same day. Rajat returned 3 days earlier but Rohit returned 4 days later. If Rajat returned on Friday, what was the expected day when both the brothers were to return home and when did Rohit Return? | [
"Wednesday, Sunday",
"Thursday, Monday",
"Monday, Friday",
"Monday, Friday",
"none"
] | C. Monday, Friday | aquarat |
mmlu_train_89264 | There is a famous saying in the West: Eat breakfast like a king. It means breakfast should be the most important meal of your day. Why? The answer is in the word breakfast itself. Breakfast means "breaking of the fast ". There are about twelve hours between dinner and breakfast, so it's important to eat breakfast to keep in good health. Also, the food for breakfast will give you what you need in the day. Eating a good breakfast is important, but not many people are changing their eating habits. In the USA, about 60% of people have their main meal in the evening. For most Japanese and Australians, the evening meal is the main meal of the day, too. In Mexico, the main meal for many families is usually at 2:00 pm. In Switzerland, the main meal is also in the middle of the day. Many nutritionist say people should eat small, low-fat meals five or six times a day. However, most people think that what you eat is more important than when you eat it. Eating healthy foods like vegetables, fish, and fresh fruit is a good way to enjoy a healthy life. Who thinks people should eat meals five or six times a day? | [
"Many nutritionists",
"Most people",
"Some doctors.",
"A few old people"
] | A. Many nutritionists | mmlu_train |
mmlu_train_5473 | It takes more than just practice to become an Olympian. Gold medal performances require some serious nutrition. Have you ever wondered what these successful athletes eat to stay in peak shape? Keri Glassman, a registered dietitian and founder of Nutritious Life Meals, appeared on "Good Morning America" today to give you a glimpse into the diets of some top athletes. Some of their meals could surprise you. Crazy Calorie Count _ One secret of swimmer Michael Phelps' astonishing performance in the 2008 Olympics in Beijing was consuming as many as 12,000 calories in one day. Athletes can eat like this and not gain any weight because their workouts are intense. According to Glassman, Phelps' workouts can burn 4,000 to 6,000 calories in a day, and those calories must be replenished in order to train the following day. Snacking Secrets Some athletes eat wacky (strange, unusual) foods that they swear improve their performance. Yohan Blake, the Jamaica sprinter and 100-meter world champion, has been making waves for stealing champion sprinter Usain Bolt's thunder on the track during the Olympic trials. Asked about how he gets his stamina, Blake answered that he eats 16 bananas per day, Glassman said. Jonathan Horton, the lead gymnast on the US team, has a blood sugar problem. His solution is honey. When he starts to feel shaky at the gym, he takes swigs of honey to boost his energy, Glassman said. Foods for Recovery What are the best foods to help the body recover after rigorous (strict) competition? For Olympic swimmer Ryan Lochte, the recovery meal is grilled chicken breasts with Alfredo sauce, whole-grain spaghetti and a salad with lemon juice and olive oil. Lochte, who recently cut out junk food, candy and soda, has undertaken a rigorous strength-training regimen that involves flipping tractor tires, dragging shipyard chains and tossing beer kegs, Glassman said. What's the best title of this passage? | [
"Good Diet Makes a True Olympian.",
"Olympians Have Olympic-size Appetites.",
"Olympians' Strange Eating Habits.",
"The Diets of some Top Olympic Athletes."
] | D. The Diets of some Top Olympic Athletes. | mmlu_train |
mmlu_train_32671 | Small discoveries in Indonesia are causing a stir in the science world. Researchers have unearthed tiny bones that they believe belong to an entire new human species. If that's true, it will change how we think about our ancestors. Clues that the little people may have lived long ago were first revealed last year in the scientific journal Nature. Scientists said that they had found the bones of a three-foot-tall female on the island of Flores, in Indonesia. When they looked more closely, they saw that the nearly complete skeleton belonged to a full-grown adult. Researchers named her Hobbit, after the tiny heroes of the Lord of the Rings books. Now the team is saying it has unearthed even more pieces of the puzzle, including a jawbone and parts of arms, legs and hands from several individuals, as well as stone tools. They reported their find in Nature this month. "The new evidence makes it very clear that these people are a new species, distinct from modern humans," Peter Brown, a scientist on the team, said. They named these ancient humans Homo floresiensis. Brown says that these little people lived as recently as 12,000 years ago. If Homo floresiensis was a different species from modern humans, that would make our family tree bigger than we knew. It means, says Brown, that "until recently, a shared the planet with us." Many scientists think a new species is unlikely. Some argue that the bones must have belonged to modern humans whose small size was the result of a genetic problem. Daniel E. Lieberman, a scientist at Harvard University, thinks that the debate over the discovery is healthy. He believes that the questions and arguments raised by critics will help us learn more about these unusual skeletons. "Disagreement is an important part of the scientific process," Lieberman said. "As far as I'm concerned, the story's only just begun." According to Daniel E. Lieberman _ . | [
"Homo floresiensis doesn't exist",
"Disagreement leads to further research",
"The investigation hasn't begun yet",
"Our family tree is bigger than we knew"
] | B. Disagreement leads to further research | mmlu_train |
arc_challenge_529 | When moist air comes in contact with a cold surface in the winter, one result can be frost. What has happened to the water vapor in the air to cause frost? | [
"It has melted.",
"It has sublimated.",
"It has evaporated.",
"It has condensed."
] | B. It has sublimated. | arc_challenge |
arc_easy_1665 | Which is an example of a group of cells with a common structure and function? | [
"stomach",
"muscle tissue",
"mitochondria",
"digestive system"
] | B. muscle tissue | arc_easy |
aquarat_26056 | The contents of a certain box consist of 14 apples and 24 oranges. How many oranges must be removed from the box so that 70 percent of the pieces of fruit in the box will be apples? | [
"18",
"6",
"14",
"17",
"20"
] | A. 18 | aquarat |
mmlu_train_1122 | Which is an example of conduction? | [
"a space heater turned on",
"water boiling on the stove",
"sunlight shining through the window",
"a metal spoon warming in a pot of hot soup"
] | D. a metal spoon warming in a pot of hot soup | mmlu_train |
mmlu_train_2687 | A hydrologist is studying the acidity level of a city lake. She collects samples twice a week and takes them to her lab to test them. After testing the samples, she places the data on a graph. She tells the city engineers that her tests indicate that the pH level has been steadily dropping over the past few months. Which of the following steps is the best way to check the accuracy of her data? | [
"retest new samples",
"retest the original samples",
"show the graphs to the engineers",
"show the samples to the engineers"
] | B. retest the original samples | mmlu_train |
aquarat_11017 | 10 books are placed at random in a shelf. The probability that a pair of books will always be together i | [
"1/6",
"1/0",
"1/5",
"1/2",
"1/1"
] | C. 1/5 | aquarat |
aquarat_44622 | The two trains of lengths 400 m, 600 m respectively, running at same directions. The faster train can cross the slower train in 180 sec, the speed of the slower train is 48 km. then find the speed of the faster train? | [
"87 Kmph",
"68 Kmph",
"54 Kmph",
"37 Kmph",
"16 Kmph"
] | B. 68 Kmph | aquarat |
aquarat_36074 | Mrs. Mary. invested $36,000; part at 5%, and part at 8%. The total interest on the investment was $2,520. How much did she invest at each rate? | [
"x=$15,000, y =$30,000",
"x=$16,000, y =$32,000",
"x=$12,000, y =$24,000",
"x=$5,000, y =$10,000",
"x=$13,000, y =$26,000"
] | C. x=$12,000, y =$24,000 | aquarat |
mmlu_train_93272 | A single prokaryotic cell can divide several times in an hour. Few eukaryotic cells can divide as quickly. Which of the following statements best explains this difference? | [
"Eukaryotic cells are smaller than prokaryotic cells.",
"Eukaryotic cells have less DNA than prokaryotic cells.",
"Eukaryotic cells have more cell walls than prokaryotic cells.",
"Eukaryotic cells are more structurally complex than prokaryotic cells."
] | D. Eukaryotic cells are more structurally complex than prokaryotic cells. | mmlu_train |
aquarat_32998 | The sum of number of boys and girls in a school is 900. If the number of boys is x, then the number of girls becomes x% of the total number of students. The number of boys is? | [
"50",
"40",
"60",
"90",
"70"
] | D. 90 | aquarat |
aquarat_10210 | A boat travels 40 km downstream in 8 hours and 24 km upstream in 12 hours. Find the speed of the boat in still water and the speed of the water current. | [
"8 km/hr, 1 km/hr",
"3.5 km/hr, 1.5 km/hr",
"1 km/hr, 6 km/hr",
"2 km/hr, 1 km/hr",
"4 km/hr, 1 km/hr"
] | B. 3.5 km/hr, 1.5 km/hr | aquarat |
mmlu_train_28807 | Scientists are debating how to limit their newly-discovered power to change genetic structure. Scientists already modify the genes of farm animals and agricultural plants to make them more productive or stronger. But now they can also change genes in wild animals and plants. These genes would continue into later generations. For example, it may be possible for scientists to remove from existence the kind of mosquitoes that carry the Zika virus. They might also be able to permanently remove species of plants and animals that are destructive to other species. In a report published last week, the U. S. National Academies of Sciences, Engineering and Medicine (NAS) said it supports continued research on this kind of gene control. But it warned that it is not possible to know what will happen when these changed plants and animals are released into the wild. Sixteen biologists, ethicists and policymakers are on an NAS committee that is examining the issue. They say that there is value to the new technology. But, they say, there is not enough evidence to support the release of modified organisms from the laboratory into nature. Many people would support stopping mosquitoes and rats from carrying diseases. But scientists say we must understand the possible scientific, ethical, legal and social results of such action before we decide whether to take it. Gene modification is spread through reproduction . Changed genes will continue to spread as long as an animal or plant continues to reproduce. They cannot be limited to a farm or kept within a country's borders. Scientists are wondering what may happen if a modified organism mates with another species. They are not yet sure how the modified genes would affect the other species. It is possible that those genes could harm those creatures or even lead to their disappearance from our planet. What can be the best title for the passage? | [
"Stop research on gene control",
"How to change genetic structure",
"Power and danger of gene control",
"Advantages of gene control in wild animals and plants"
] | C. Power and danger of gene control | mmlu_train |
mmlu_train_37621 | MOOCs, an acronym for "massive open online courses," mark an important, possibly revolutionary, development in education. These courses are online, free of charge, and open to anyone in the world who has a laptop and an Internet connection. Moreover, they are mainly offered by elite universities like Standford, Berkeley, Harvard and Columbia. The courses, like normal college courses, are sequenced by difficulty, enabling students to progress from beginners to the advanced. The courses cover not only a broad range of technical subjects such as math and computer science, but also courses in the social sciences and the humanities . Though MOOCs are not offered for credit and degree, many students enroll in the courses for real skills or knowledge which they can put to some practical use. Some students even form online study groups, or in-person groups with students who live nearby. The format seems superior to the traditional school class. The average quality of the lecturer is much higher, because students do not have to stick with a mediocre lecturer. Besides, students can scroll back or forward--in short, they can go at their own learning speed, which they cannot do in a live lecture. And, of great importance, they do not have to travel anywhere to attend an online lecture. One can obtain a first-class American college education wherever he or she lives and however little money he or she has. There is a problem of asking questions of the lecturer in a class of ten thousand students, but some MOOCs have solved it by allowing students to post questions online for a vote, and only the most popular questions are put to the lecturer. In a knowledge era, lifelong learning is not confined to a traditional classroom. Of course, students enrolling in MOOCs cannot be compared with those who are in traditional universities, but we need to rethink what a "students" is. Students in MOOCs are very clever, have work experience, and in many cases, have already developed a set of core competences. Moreover, they also offer unique international _ that would be the envy of any school classroom. Students enroll in MOOCs mainly for _ . | [
"credits",
"degrees",
"skills",
"study groups"
] | C. skills | mmlu_train |
mmlu_train_38724 | It is not a good idea to stop the actor Richard Griffiths in the middle of a play.During the past year he has stopped performances many times at the National Theatre when mobile phones rang, and he threw out one member of the audience because she failed to turn off her phone. So when a mobile rang out for the third time during his performance in Alan Bennett's The History Boys, he spoke angrily to the theatergoer , "I am not going to compete with these electronic devices ." Griffiths' actions led to a debate in the UK theatre world over whether phones should be forbidden by law from British theatres, too.Actors have already asked the government to legalise the use of an electronic device that stops mobile phone signals in theatres. Technology companies have "stopping" devices that send out a high-powered signal on the same frequency as a mobile phone, stopping the mobile phone signal. However, these are forbidden in many countries because they might stop emergency calls from being made. Rosemary Squire, president of the Society of West End Theatre, said, "Phones are one of the biggest problems theatres face.We should look at equipment that could stop phones or make a London-wide theatre rule." Nick Allott, the managing director of Sir Cameron Mackintosh's theatre group, said, "We would all welcome some ways of stopping ringing phones but doctors and emergency workers need to be connected in a theatre and we mustn't stop that." What can we do to solve the problem? According to the passage, "stopping" devices _ . | [
"have the same functions as mobile phones",
"cause the biggest problem theatres have to face",
"prevent the mobile phones signals from being received",
"help doctors or emergency workers receive emergency calls"
] | C. prevent the mobile phones signals from being received | mmlu_train |
mmlu_train_79487 | A: Good afternoon. Are you Zhang Li? B: Yes, I am. A: Is Li your family name? B: No, Li is my given name. My family name is Zhang. What's your name? A: My name is Alice. I'm from the USA. B: Nice to meet you, Alice. A: Nice to meet you, too! I'm a student in Sunny Middle School. B: Oh, great! We are in the _ school. I'm in Class Three, Grade Seven. What class are you in? A: I'm in Class Four, Grade Seven. B: My English teacher is Mr. Miller. He is from the USA, too. Is he your English teacher? A: No, he isn't. He's my father. B: Oh? That's good. My QQ number is 2521786. Do you use QQ? A: No, I don't . But you can call me at 789-0765. B: OK, my phone number is 675-4721. A:OK! See you! B: Bye! Which statement is right? (?) | [
"Alice and Zhang Li meet in the morning.",
"Alice and Zhang Li are classmates.",
"Alice's father is an English teacher.",
"Alice has a QQ number."
] | C. Alice's father is an English teacher. | mmlu_train |
mmlu_train_37842 | Do Algebra problems 15 through 25. Give the different forms of the verbs on page 50 of your French workbook. Read page 12 through 20 of the Shakespeare play, and when you have finished that, don't forget to fill the missing chemical symbols on the Periodic Table of Elements worksheet. Homework is a major part of going to class, and it helps students grasp important concepts. Luckily, you can do a few things to make homework less painful. First, be sure you understand the assignment. Write it down in your notebook or day planner if you need to, and don't be afraid to ask questions about what is expected. It is much easier to take a minute to ask the teacher during or after class than to struggle to remember later at night! Second, use any extra time you have in school to work on your homework. Many schools have study halls that are specifically designed to allow students to study or get homework done. It is attractive to hang out with friends during study periods or unscheduled time, but the more work you can get done in school, the less you will have to do at night. Third, pace yourself. If you don't finish your homework during school, think about how much you have left and what else is going on that day, and then budget your time. Most high school students have between 1 and 3 hours of homework a night. If it is a heavy-homework day and it seems like you have got an assignment on every subject but gym and lunch, you will need to devote more time to homework schedule, especially if you are involved in sports or activities or have an after-school job. One way to reduce your burden of homework at night is to _ . | [
"take part in studying teams",
"appeal for teachers' aid at any time",
"focus full attention on teachers' lecture",
"make full use of the time at school"
] | D. make full use of the time at school | mmlu_train |
mmlu_train_98198 | If I want to protect myself from the ultra violet rays I can wear | [
"a bird",
"a sweater",
"a cat",
"a dog"
] | B. a sweater | mmlu_train |
aquarat_52653 | Set #1 = {J, K, L, M, E}
Set #2 = {K, L, M, N, O, P}
There are these two sets of letters, and you are going to pick exactly one letter from each set. What is the probability of picking at least one vowel? | [
"1/6",
"1/8",
"1/3",
"1/4",
"1/9"
] | C. 1/3 | aquarat |
mmlu_train_61490 | Taking photographs at a birthday or a wedding has become as natural as blowing out candles or cutting the cake. But our obsession with recording every detail of our happiest moments could be damaging our ability to remember _ , according to new research. A study has shown that taking pictures rather than concentrating fully on the events in front of us prevents memories taking hold. Dr. Linda Henkel, from Fairfield University, Connecticut, described it as the "photo-taking impairment effect". She said: "People so often pull out their cameras almost mindlessly to capture a moment, to the point where they are missing what is happening right in front of them. When people rely on technology to remember for them--counting on the camera to record the event and thus not needing to attend to it fully themselves--it can have a negative impact on how well they remember their experiences." Dr Henkel and her team carried out an experiment in a museum, to learn if taking pictures of the exhibits was hindering the ability of visitors to remember what they had seen. A group of university students were led on a tour at the Bellarmine Museum of Art at Fairfield University and were asked to either photograph or try and remember objects on display. The next day their memory was tested. The results showed that people were less accurate in recognizing the objects they had photographed than those they had only looked at. It was found that their memory for the details of the objects they had photographed was poorer. Henkel's lab is currently investigating whether the content of a photo, such as whether you are in it, affects later memory. She is also researching whether actively choosing what to photograph might influence what we remember. Previous research suggests that reviewing photos we have taken does help us remember the objects, but only if we take the time. "Research has suggested that the sheer volume and lack of organization of digital photos for personal memories discourages many people from accessing and recalling them. In order to remember, we have to access and interact with the photos, rather than just collect them," said Dr Henkel. The passage is probably taken from _ . | [
"a health magazine",
"a cultural overview",
"an economics report",
"an entertainment website"
] | A. a health magazine | mmlu_train |
mmlu_train_15953 | High in the sky, a group of birds fly past. The 5-foot-tall creatures are whooping cranes, the tallest birds in North America noted for its loud call. The wild animals appear to be following much larger birds. But those aren't birds at all. They are three-wheeled aircraft called trikes , and the pilots flying them are wearing white helmets and white gowns. That plan might sound like a stupid idea, but it's not. The pilots are from an organization called Operation Migration. They are helping the whooping cranes learn to migrate, or move from one area to another when the seasons change. The cranes are endangered. In 1941,the species had dwindled to roughly 20 birds because of hunting and habitat loss. US wildlife officials counted 149 whooping cranes in November 1995,the most since the American government began taking censuses in the 1930s.Today,about 380 remain. In the fall, whooping cranes are supposed to migrate south. However, many of them don't know how. "With so few birds left, young whooping cranes typically don't have parents around to teach them," explains pilot Joe Duff. That's where the trikes come in. Each October, pilots dress up as whooping cranes and take to the skies in Wisconsin. The young birds follow them because they think the trikes are big whooping cranes. It takes about three months to reach south--with plenty of rest stops on the way. The pilots lead the cranes to refuges, or protected areas, in Florida. This spring, the birds will migrate north by themselves--no trikes needed! "It's nice because you know the birds are going to make it," Duff told WR News. According to the passage, which of the following is TRUE? . | [
"Whooping cranes are famous for their height.",
"The pilots wear helmets and gowns to attract people's attention.",
"Whooping cranes want to migrate north in the autumn.",
"Whooping cranes will migrate on their own this spring."
] | D. Whooping cranes will migrate on their own this spring. | mmlu_train |
arc_easy_1366 | Which of these makes it possible for hurricanes to form? | [
"water depth",
"water clarity",
"water salinity",
"water temperature"
] | D. water temperature | arc_easy |
mmlu_train_15664 | First aid is emergency care for a victim of sudden illness or injury until more skillful medical treatment is available. It may save a life or improve certain vital signs including pulse, temperature, a clear airway, and breathing. In minor emergencies, first aid may prevent a victim's condition from turning worse and provide relief from pain. First aid must be done as quickly as possible. In the case of the seriously injured, a few minutes can make the difference between complete recovery and loss of life. First-aid measures depend upon a victim's needs and the provider's level of knowledge and skill. Knowing what not to do in an emergency is as important as knowing what to do. Improperly moving a person with a neck injury, for example, can lead to permanent spinal injury and paralysis . Despite the variety of injuries possible, several principles of first aid apply to all emergencies. The first step is to call for professional medical help. The victim, if conscious, should be reassured that medical aid has been requested, and asked for permission to provide any first aid. Next, assess the scene, asking other people or the injured person's family or friends about details of the injury or illness, any care that may have already been given, and pre-existing conditions such as diabetes or heart trouble. The victim should be checked for a medical card that describes special medical conditions. Unless the accident scene becomes unsafe or the victim may suffer further injury, do not move the victim. First aid requires rapid assessment of victims to determine whether life-threatening conditions exist. One method for evaluating a victim's condition is known by the acronym ABC, which stands for: A---Airway: is it open and clear? B---Breathing: is the person breathing? Look, listen, and feel for breathing. C---Circulation: is there a pulse? Is the person bleeding extremely? Check skin color and temperature for additional indications of circulation problems. First aid may bring about all the following results EXCEPT _ . | [
"saving a victim's life",
"preventing a victim's condition from getting worse.",
"relieving a victim from pain",
"helping a person avoid sudden illness or injury"
] | D. helping a person avoid sudden illness or injury | mmlu_train |
aquarat_228 | A class average mark in an exam is 70. The average of students who scored below 60 is 50. The average of students who scored 60 or more is 75. If the total number of students in this class is 20, how many students scored below 60? | [
"20",
"10",
"60",
"50",
"40"
] | A. 20 | aquarat |
mmlu_train_97792 | Which would likely cause refraction? | [
"lego bricks",
"car windshields",
"paper",
"lemons"
] | B. car windshields | mmlu_train |
mmlu_train_29472 | Recent developments in astronomy have made it possible to detect planets in our own Milky Way and in other galaxies. This is a major achievement because,in terms,planets are very small and do not give out light. Finding planets is proving hard enough, but finding life on them will prove _ more difficult. The first question to answer is whether a planet can actually support life. In our own solar system,for example,Venus is far too hot and Mars is far too cold to support life. Only the Earth provides ideal conditions,and even here it has taken more than four billion years for plant and animal life to evolve . Whether a planet can support life depends on the size and brightness of its star, that is its "sun". Imagine a star up to twenty times larger, brighter and hotter than our own sun. A planet would have to be a very long way from it to be capable of supporting life. On the contrary, if the star were small,the life--supporting planet would have to have a close orbit round it and also provide the perfect conditions for life forms to develop. But how would we fund such a planet? At present, there is no telescope in existence that is capable of detecting the presence of life. _ . It is impossible to look for life on another planet using earth--based telescopes. Our own warm atmosphere and the heat generated by the telescope would make it impossible to detect objects as small as planets. Even a telescope in orbit round the earth like the very successful Hubble telescope,would not be suitable because of the dust particles in our solar system. A telescope would have to be as far away as the planet Jupiter to look for life in outer space because the dust becomes thinner the further we travel towards the outer edges of our own solar system. Once we detected a planet,we would have to find a way of blocking out the light from its star, so that we would be able to "see" the planet properly and analyze its atmosphere. In the first instance, we would be looking for plant life,rather than "little green men" . The life forms most likely to develop on a planet would be bacteria. It is bacteria that have generated the oxygen we breathe on earth. For most of the earth's history they have been the only form of life on our planet. As Earth-dwellers,we always cherish the hope that we will be visited by little green men and that we will be able to communicate with them. But this hope only exists in science fiction. If we were able to discover lowly forms of life like bacteria on another planet,it would completely change our view of ourselves. As Daniel Goldin of NASA observed,"Finding life elsewhere would change everything. No human efforts or thought would be unchanged by it." Why are planets in other solar systems much more difficult to detect than stars? | [
"Because of the dust particles in our own solar system",
"Because of the limitations of earth-based telescope",
"Because even the Hubble is not powerful enough to see beyond the Milky Way.",
"Because planets are small and dark,and stars are large and radiant"
] | D. Because planets are small and dark,and stars are large and radiant | mmlu_train |
mmlu_train_91303 | We are all busy talking about and using the Internet. But how many of us know the history of the Internet? Many people are surprised when they find that the Internet was set up in the 1960s. At that time, computers were large and expensive. Computer networks didn't work well. If one computer in the network broke down, then the whole network stopped. So a new network system had to be set up. It should be good enough to be used by many different computers. If part of the network was not working, information could be sent through another part. In this way computer network system would keep on working all the time . At first the Internet was only used by the government , but in the early 1970s; universities, hospitals and banks were allowed to use it, too. However, computers were still very expensive and yet Internet was difficult to use. By the start of the 1990s, computers became cheaper and easier to use. Scientists had also developed software that made "surfing" the Internet easier. Today it is easy to get online and it is said that millions of people use the Internet every day. Sending e-mail is more and more popular among young people. The Internet has become one of the most important parts of people s life. What can we infer from the last sentence ? | [
"People will die without the Internet.",
"All people should set up their own network.",
"People live easily without the Internet.",
"People will more and more depend on the Internet."
] | D. People will more and more depend on the Internet. | mmlu_train |
mmlu_train_5367 | Security--for the information on your smartphone, as well as for the phone itself---is a hot topic these days. The truth is that you're packing a lot of sensitive information on your phone, and you should keep it safe. When it comes to physical security, iPhone users would do well to download Find My iPhone, a free app from Apple that allows you to visit a website and see your (lost, stolen or misplaced) phone on the map. You can then sound an alarm, send a message that will pop up on its screen, lock the phone or erase all your data. Android does not have an exact equivalent , but there are plenty of alternatives. A free app called Lookout offers the find-my-phone feature. The paid version allows you to wipe the data from your phone remotely. Then there is your coffee shop's WiFi network. Anyone with minimal technical expert skill can snoop on people using shared wireless networks, harvesting passwords and other personal data. Lookout's apps will caution you when you've logged on to an insecure network, but cannot protect you once you're there. In order to protect yourself on such networks, you can use a virtual private network, or V.P.N. This turns all your activity into nonsense to anyone trying to read along with you from across the Starbucks. It also keeps websites from tracking you and, if you're traveling, allows you to get access to sites that may be blocked in other countries. If you have an iPhone, the simplest V.P.N. app is probably Hotspot Shield, whose distinguishing feature is said to be that it automatically kicks in each time you start browsing , as opposed to other V.P.N. apps that require you to start them up manually . This matters, because even if you decide you want a V.P.N. app, you want to spend approximately zero time thinking about it. For the most part, _ was true of Hotspot Shield, though occasionally it took a while to connect or temporarily lost connection without warning. I found myself having to turn the app on and off sometimes, which involved setting my phone constantly. If even reading about the setting on your phone drives you crazy, then it is probably best to stay away from a V.P.N. app. But if you're the type who can't resist checking your bank balance from your comer bar, the hassle may be preferable to the risk. Which of the following can warn you against the insecure network? | [
"Android",
"V.P.N.",
"Lookout",
"Find My iPhone"
] | C. Lookout | mmlu_train |
mmlu_train_2235 | Scientists use models that show the features of an atom. A scientist should use a model that | [
"was the first to be developed",
"was most recently developed",
"shows the arrangement most clearly",
"shows the details needed for a specific purpose"
] | D. shows the details needed for a specific purpose | mmlu_train |
aquarat_48605 | The area of the cardboard(in cm2) needed to make a box of size 25 cm * 15 cm * 8 cm will be? | [
"1390 cm2",
"695 cm2",
"1280 cm2",
"1220 cm2",
"1240 cm2"
] | A. 1390 cm2 | aquarat |
aquarat_2846 | When an amount was distributed among 14 boys, each of them got rs 80 more than the amount received by each boy when the same amount is distributed equally among 18 boys. What was the amount? | [
"Rs. 5040",
"Rs. 6040",
"Rs. 7040",
"Rs. 5440",
"Rs. 8040"
] | A. Rs. 5040 | aquarat |
aquarat_1064 | For a group of n people, k of whom are of the same sex, the (n-k)/n expression yields an index for a certain phenomenon in group dynamics for members of that sex. For a group that consists of 20 people, 5 of whom are females, by how much does the index for the females exceed the index for the males in the group? | [
"0.05",
"0.0625",
"0.5",
"0.25",
"0.6"
] | C. 0.5 | aquarat |
mmlu_train_85947 | There are 45 students in our class. I have made a survey, 36 students say they like to exercise. Most boys play basketball together twice a week. But girls think basketball is difficult for them, they'd like to play volleyball together twice a week. My friend, Tony, is good at running. He runs fastest in our class. He runs for 30 minutes on the playground every evening before he goes to bed. Is it interesting? Gray is good at swimming. He goes to the swimming club three times a month in winter, and three times a week in summer. So he is pretty healthy. Some of my classmates have good eating habits. They eat both meat and vegetables. 70% of them drink milk every day. 15 students say they drink milk three or four times a week. But some students like to eat junk food, especially Sally. What's worse is that she doesn't like to exercise, so she is very fat. She always says " I'm going to lose weight tomorrow." Why do the girls dislike to play basketball? | [
"Becausetheyhavenotime.",
"Becausetheythinkitisnoteasy.",
"Becausetheydon'tliketoplaywiththeboys.",
"Becausetheydon'tliketoexercise."
] | B. Becausetheythinkitisnoteasy. | mmlu_train |
mmlu_train_95089 | After the wolf ate all the rabbits he survived on: | [
"water",
"plants.",
"fat",
"luck"
] | C. fat | mmlu_train |
mmlu_train_33216 | Car needs gas to run as your body needs food to work for you. Eating the right kinds of food is very important. A good eating habit can help your body grow strong if you take care of what you eat. There are four main food groups altogether. The _ group has food like milk, cheese and sour milk. The other three groups are the meat and fish group, the fruit and vegetable group, and the bread and rice group. Each meal should have at least one food from all four main groups. With all of these foods together, you will be given enough energy during the day. It is easy to get into bad eating habits. You may eat your breakfast in a hurry to get to school on time or you may not have time for a good lunch. It may be easier to eat fish and chips for your supper all the time. But you will find yourself tired and you will not be able to think quickly. Watching what you eat will help keep your body healthy and strong. It is also good to take some exercise. It will help you eat more if you take a walk or play games in the open air. Having good eating habits with some exercise is the key to your health. In this passage the writer mainly tells us that _ . | [
"every person needs food to grow well.",
"taking exercise can keep your body strong.",
"the right kind of food with exercise will keep you healthy.",
"enough energy helps people think more quickly."
] | C. the right kind of food with exercise will keep you healthy. | mmlu_train |
aquarat_36864 | In a workshop there are 3 kinds of beds, 3 kinds of closets, 2 kinds of shelves and 7 kinds of chairs. In how many ways can a person decorate his room if he wants to buy in the workshop one shelf, one bed and one of the following: a chair or a closet? | [
"A) 168.",
"B) 80.",
"C) 60.",
"D) 48.",
"E) 16."
] | C. C) 60. | aquarat |
aquarat_15836 | How many cubes of 5cm edge can be cut out of a cube of 15cm edge | [
"36",
"232",
"27",
"48",
"None of these"
] | C. 27 | aquarat |
mmlu_train_66871 | School Groups:$10.00 per person One free teacher admission per 10 students. Group rates apply to groups 15 or more. Click HERE to make a reservation online today! The Miami Planetarium opened its doors to the public on November 4, 1966 and has entertained and educated children of all ages about astronomy and the wonders of the night sky ever since. The planetarium houses a 65-foot diameter doomed projection screen with 231 seats. At the heart of the Planetarium is a SPITZ "Space Transit Planetarium" star projector , which is capable of accurately reproducing the stars and planets as seen from anywhere on Earth at any time during the year. Shows daily except Thanksgiving and Christmas Day. Unlike any other in South Florida, the Planetarium is a unique setting for bringing the stars and planets indoors in animated live star shows and music filled laser light shows. The Weintraub Observatory houses two powerful telescopes. Observatory hours are from 8:00p.m. to 10:00p.m. Look through the telescope to view the planets, the four moons of Jupiter, the rings of Saturn and deep sky objects such as galaxies, nebulas and double stars. Deposit: A $ 75 deposit must be received 10 days ahead of the visit date to guarantee your visit. Cancellation Policy:The museum requires 48 hours advance notice prior to any cancellation or other changes to a reservation. Without prior notification the original total will be expected upon arrival. Payment Policy: The balance of the admission fee is due upon arrival at the museum on your visit day. Upon arrival: The leading teacher should check in at the box office with payment for the correct head count of students and teachers. Visitors should remain on the bus until a museum interpreter show you around the museum. Museum Etiquette: We ask that all groups remain together and orderly. Teachers are asked to help maintain order with their groups. We reserve the right to refuse service to any group or individual not obeying the museum policies. Bus procedures: The museum will provide parking for buses in our parking lot. Upon arrival, bus drivers will be directed by the museum staff to the appropriate places to park. It is recommended that buses remain on the spots throughout the group's entire museum visit. For more information & reservations call: (305)646-4222. In the Miami Planetarium, visitors can _ . | [
"look through the telescope to view the Mars at 11 p.m.",
"enjoy the roller coaster on the weekend.",
"watch animated live star shows on December 1",
"watch animated live star shows on December 25"
] | C. watch animated live star shows on December 1 | mmlu_train |
aquarat_1483 | Simplify: 0.3*0.8+0.1*0.5 | [
"0.52",
"0.29",
"0.48",
"0.64",
"0.46"
] | B. 0.29 | aquarat |
arc_challenge_22 | How many times does Earth rotate on its axis in one day? | [
"once",
"twice",
"24 times",
"365 times"
] | A. once | arc_challenge |
mmlu_train_34860 | As for older people, some of the applications are hard to use because they didn't grow up with them. They don't have simple models of how it should work. They don't know what to do when it doesn't work. I think there is huge potential, so I have designed some for them. The ability to connect to friends, who remember the same movies, news and music, is really important, especially as people get older. They end up in retirement homes and they aren't always close to their friends. Allowing the network to help them connect with friends and family members is a really powerful thing. My wife likes using the Internet, although it took me years to get her to use e-mail. She was born with normal hearing, but lost it when she was three years old. She was totally deaf for many years until 53 when she got ear implants .They work really well. That is a big change for her. Before then, her friends couldn't call her on the phone, so they insisted that she use e-mails to communicate with them. The younger people don't even think of this as technology. It's just there, and they use it .There's been a very interesting change in communication styles between the old and the young .A woman named Sharryturkle wrote about this phenomenon .There are some kids who are now in their teens and are tending not to make phone calls. And they think of e-mail as old-fashioned and slow. The reason why teens don't make phone calls seems to be that they don't know what to say. When they call they often pause for a while. On the other hand, texting is considered proper, and it's OK if you don't answer. You might have been distracted .It's not considered rude, but it's considered unusual if you're in this kind of voice conversation and simply stop talling. What is the best way for the teens to communicate with others? | [
"Sending e-mail.",
"Making phone call.",
"Writing letters.",
"Sending text messages."
] | D. Sending text messages. | mmlu_train |
arc_easy_964 | Which physical structure would best help a bear to survive a winter in New York State? | [
"big ears",
"black nose",
"thick fur",
"brown eyes"
] | C. thick fur | arc_easy |
aquarat_21972 | The distance from City A to City B is 150 miles. While driving from City A to City B, Cara drives at a constant speed of 30 miles per hour. Dan leaves City A 90 minutes after Cara. What is the minimum constant speed in miles per hour that Dan must exceed in order to arrive in City B before Cara? | [
"42.85",
"44",
"46",
"48",
"50"
] | A. 42.85 | aquarat |
mmlu_train_21102 | It is not always easy to understand inventions and new developments in science. To understand fiber optics , however, you can try an experiment. Put a drop or two of milk into the glass of water. Turn off the lights. Shine the light from your flashlight through the top of the glass at an angle of about 45 degrees. Put a piece of white paper against the glass when the beam of light is shining. Move the paper so you can see where the beam is coming out of the glass. You should see a spot of light. Some of the light has passed through the water and through the glass. You see it on the paper. You also see another beam going down into the glass. It is being reflected down into the glass. Next move the flashlight so that the beam is coming straighter down(30 degrees) into the water. You will see the same phenomenon: some of the light is reflected back into the glass. And some escapes out. Now move the beam of light from the flashlight slowly up until you cannot see any light escaping. This point is called the "point of total internal reflection." The word internal means "inside." All the light is staying inside the glass. There is no beam showing a bright spot on the white paper. All the light energy is inside the glass. The glass of milky water is like a strand of glass. A fiber optic tube is a bundle of long thin strands of glass, really many tubes. However, the principle is the same: at a certain angle, all the light energy that goes into the glass fiber comes out the other end. Light is energy. Sound is energy. Radio waves and electricity are both energy. They can all be changed into light, and as light they can all travel along a glass fiber. Light travels at the rate of 186,000 miles per second. Therefore, a message can travel that fast in a glass fiber. This is the principle, or law of nature, that makes fiber optics work. In the experiment,_makes the biggest difference. | [
"the angel at which to shine the light from the flashlight",
"the amount of water in the glass of milk",
"the number of drops of milk to pour into the glass of water",
"the size of the hole through which to shine light from the flashlight"
] | A. the angel at which to shine the light from the flashlight | mmlu_train |
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