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mmlu | Question:
Mandara seemed to know something big was about to happen. So she let out a yell, caught hold of her 2-year-old daughter Kibibi and climbed up into a tree. She lives at the National Zoo in Washington, D.C. And on Tuesday, August 23rd, witnesses say she seemed to sense the big earthquake that shook much of the East Coast before any humans knew what was going on. And she's not the only one. In the moments before the quake, an orangutan let out a loud call and then climbed to the top of her shelter. "It's very different from their normal call," said Brandie Smith, the zookeeper. "The lemurs (monkey-like animals of Madagascar) will sound an alarm call if they see or hear something highly unusual." But you can't see or hear an earthquake 15 minutes before it happens, can you? Maybe you can -- if you're an animal. "Animals can hear above and below our range of hearing," said Brandie Smith. "That's part of their special abilities. They're more sensitive to the environment, which is how they survive." Primates weren't the only animals that seemed to sense the quake before it happened. One of the elephants made a warning sound. And a huge lizard ran quickly for _ . The flamingoes (a kind of bird) gathered before the quake and stayed together until the shaking stopped. So what kind of vibrations were the animals picking up in the moments before the quake? Scientist Susan Hough says earthquakes produce two types of waves -- a weak "P" wave and then a much stronger "S" wave. The "P" stands for "primary". And the "S" stands for "secondary". She said she thinks the "P" wave might be what set the animals off. Not all the animals behaved unusually before the quake. For example, Smith says the zoo's giant pandas didn't jump up until the shaking actually began. But many of the other animals seemed to know something was coming before it happened. "I'm not surprised at all," Smith said. According to Brandie Smith, _ .
Choices:
A. many animals' hearing is sharp
B. earthquakes produce two types of waves
C. primates usually gather together before a quake
D. humans can also develop the ability to sense a quake | A |
mmlu | Question:
It seems that people are gradually losing their smartness as smartphones become increasingly important assistants in their lives. As we rely too much on technology instead of our brains, many people have lost three basic abilities. The first skill many people have lost is remembering phone numbers. Because phone numbers are stored in smartphone contacts, there's now no need to dial a number or look at it again. _ And some people may also have lost their sense of direction because navigation apps can guide people anywhere they want. People get so dependent on them that when they can't use their smartphones, they get lost and anxious. But the worst lost skills may be social ones, meaning that some people are becoming socially inept People often bury themselves in their smartphones. As we're too absent-minded by what's happening in the virtual some of us have lost conversational skills and sometimes can't even distinguish whether a person is happy or not. Last August, researchers at the University of California, Los Angeles, studied 51 students aged 11 and 12 who had over five hours' screen time every day. Their task was to tell the emotions of 48 pictures of faces that were happy, sad, angry or scared. The children made an average of 14. 02 mistakes at the beginning. But after a five-day camp without electronic products, they made only 9.41 mistakes on average. Luckily, people still have a chance to get these abilities back. You should try to keep your parents' numbers in mind for emergencies. You should also pay more attention to street signs and stores , which will help you to draw a mind map and stop you from getting lost. And the easiest solution to social skill loss is to take a break from electronic products. The passage mainly tells us that many people are _
Choices:
A. becoming no smarter than smartphones
B. benefiting from smartphones' intelligence
C. losing some basic abilities because of using samrtphones
D. trying hard to break away from smartphones'intelligence | C |
mmlu | Question:
One morning, Mr Black was driving in the country and looking for a small hotel. When he saw an old woman on the side of the road, he stopped his car and said to the old woman, "I want to go to the Sun Hotel. Do you know it?" "Yes," the old woman said,"I will show you the way." She got into Mr Black's car and they drove about twelve miles. When they came to a small house, the old woman said, "stop here!" Mr, Black stopped and looked at the house."But this isn't a hotel." He said to the old woman. "No"the old woman answered, "This is my house. And I'll show you the way to the hotel. Turn round and go back nine miles. Then you'll see the hotel." The writer wrote the story in order to _ .
Choices:
A. tellus a serious story
B. tell us a sad story
C. tell us to help others
D. tell us a joke | D |
mmlu | Question:
We can not live a modern life without traveling.The fastest way of traveling is by air.With a plane people can travel in one day to places which it took a month or more to get to a hundred years ago. Traveling by train is slower than by plane, but people can see the country when they are traveling through.Modern trains have comfortable seats and dinning-cars.They make even the longest journey enjoyable. Some people prefer to travel by sea when possible.There are large luxury liners or river boats.They are not as fast as trains or planes, but traveling by sea is a very pleasant way to spend a holiday. Many people like to travel by car.They can make their own timetable.They can travel hundreds of miles or only fifty miles a day, just as their wish.They can stop wherever they want to see something interesting or to enjoy a good meal at a good restaurant, or to spend the night at a hotel.That is why people choose traveling by car for pleasant trips, while they usually take trains or planes for business. When people travel on business, they usually take
Choices:
A. a boat or a train
B. a car or a boat
C. a plane or a car
D. a train or a plane | D |
mmlu | Question:
Researchers have found more evidence that suggests a relationship between races and rates of lung cancer among smokers. A new study shows that black people and Native Hawaiians are more likely to develop lung cancer from smoking. It compared their risk to whites, Japanese-Americans and Latinos. Researchers at the University of Southern California and the University of Hawaii did the new study. The New England Journal of Medicine published the findings. The eight-year research studied more than 180,000 people. They included present and former smokers and people who never smoked. Almost 2,000 people in the study developed lung cancer. Researchers say genetics might help explain the racial and ethnic differences. There could be differences in how people's bodies react to smoke. But environmental influences, including the way people smoke, could also make a difference. African-Americans and Latinos in the study are reported smoking the fewest cigarettes per day. Whites are the heaviest smokers. But the scientists point out that blacks have been reported to breathe cigarette smoke more deeply than white smokers. This could fill their lungs with more of the chemicals in tobacco that cause cancer. Scientists know that some diseases effect different groups differently. And some drug companies have begun to develop racially targeted medicines. Last June, the United States Food and Drug Administration approved a drug designed to treat heart failure in black patients. The name is BiDil. The agency called it "a step toward the promise of personalized medicine." Which of the following orders is from higher to lower risk of having lung cancer?
Choices:
A. Whites--Native Hawaiians
B. Africans--Americans--Latinos
C. Asians--Native Hawaiians
D. Africans--Americans--Native Hawaiians | B |
mmlu | Question:
Sometimes having a teenager at home can be a real headache. Many teenagers smoke, drink, wear strange hairdos and even fight. Basically, they are often taking risks. Earlier studies have shown that teenagers are more likely to make _ decisions than people from any other age group, including children and adults. Is it that teenagers are too young to tell right from wrong? Not really. So what explains their risky behavior? According to Laurence Steinberg, a professor at Temple University, US, the reason is that teens care a lot about how their peers view them - that's the effect of "peer influence", reported Science Daily. As children enter their teenage years, they spend more time with their friends and classmates and also become more sensitive to their feedback . This sensitivity drives teenagers to concentrate on the short-term benefits of making risky choices and overlook the costs. In a test, a group of teenagers were asked to play a video driving game. When they played with their friends watching, they took more chances and drove more carelessly because that would increase their possibility of winning. But when they played alone, they tended to drive more safely. Why does pressure from peers have such a big influence on teens' behavior? As Steinberg sees it, a teenager's brain is like a car with a good accelerator but a weak brake . The "accelerator", the brain's ability to notice the benefits of things, is fully developed by teenage years while the "brake", the brain part related to controlling impulses and long-term thinking, is still immature . When teens are under the pressure of being judged by their peers, they tend to push hard on the accelerator. Given how weak the brake is, it is likely that they are going to end up in a crash. But the good news here, according to Steinberg, is that a violent teenager doesn't necessarily become a violent adult. About two-thirds to three-quarters of violent youth grow out of it. "They get more self-controlled," Steinberg told Live Science. Also, people who haven't committed a violent crime by age 19 are less likely to start doing it later, added Steinberg. According to the text, with peers around them, teenagers tend to _ .
Choices:
A. use more self-control
B. become more careful about what they do
C. perform better than when they are alone
D. focus more on short-term benefits | D |
mmlu | Question:
Which food is a fruit?
Choices:
A. a potato
B. an onion
C. a carrot
D. a pumpkin | D |
mmlu | Question:
When you sit in the classroom, do you suddenly feel that summer flew by so quickly? I'm still thinking about taking walks in the park and meeting my friends at night. But I know that the school season is beginning. And homework, tests and routine all come with it. When I stay in my room and write my homework, I often look out of the window and look back at this summer. In the past two months of summer break, I spent many evenings in my backyard. I listened to my parents telling stories about their childhood. My brother caught fireflies . Once in a while, we made a barbecue and ate chicken and corn. Now I'm back to school. It's difficult to find time to do everything that I want to do, like dancing, reading, and sleeping. How I hope to have another break in my studies! I could read a fun book instead of the boring ones that we have to read for English class. Still, I should not feel sad. Summer gave me time to relax, good memories, laughter, and the experience of new friendships. But without school, I would never appreciate the happy moments in summer and the responsibilities that I have now. What's more, there are only 10 more months to go until summer comes again. And in the meantime, I can have lots of fun with my friends as we begin our high school experience together. How long should the writer spend before the next summer break comes?
Choices:
A. About ten months
B. Only two months.
C. Several days.
D. We don't know. | A |
arc_easy | Question:
Living cells synthesize long chains of amino acids called proteins. Which substance provides the information needed to correctly sequence the amino acids during protein synthesis?
Choices:
A. ATP
B. mRNA
C. tRNA
D. DNA | D |
mmlu | Question:
There is a girl. Her name is Chen Rong. She's a student in Grade Four at Jiajiao Primary School in Chongqing. Teachers and students all like her, because this eleven-year-old girl studies very well and she is very diligent . Every day she is the first one to come to the classroom and clean the classroom. At home Chen Rong is a filial girl. There's something wrong with her mother's eyes so Chen Rong cooks for her parents every morning. There's something with her father's left hand . After school Chen Rong works in the _ with him. She hasn't got time to play. She says she is her father's left hand and her mother's eyes. Which of the following is TRUE?
Choices:
A. There are three people in Cheng Rong's family.
B. Chen Rong doesn't like cleaning the classroom.
C. Chen Rong's father cooks for his family.
D. Chen Rong never cooks for her family | A |
mmlu | Question:
Tina was not like many of her classmates. She didn't listen to popular music or watch many movies, and she wasn't interested in nice clothes. When she got together with her friends, they wanted to listen to rock and pop music. When Tina asked if they would like to try classical music, they all looked at her strangely."Classical music is for old people, " one of her friends said. Tina was worried that something was wrong with her. She decided to talk to her father. As she entered his study , her father could feel something was wrong. "Dad, am I strange?" she asked her father."Of course not, " he answered. "Why do you ask that?" "Because I don't like the same things as my classmates do. They want to listen to Mariah Carey's music. I like Yo Yo Ma's." "I can understand, Tina, it's all right _ You don't have to copy what other people do. Everybody has different tastes. Some of them are popular, and others aren't. "After talking with her father, Tina felt better. She realized that being different made her special. It was an important lesson for her to learn. What can we learn from the passage?
Choices:
A. We don't have to be like others.
B. Friends can say bad things sometimes.
C. Classical music is better than pop music.
D. Tina found a new friend. | A |
mmlu | Question:
When you're returning to Australia, be careful that you don't bring in pests and diseases. Some items you might bring back from overseas can be pests and diseases that Australia doesn't have. When you return, declare all food, meat, fruits, plants, seeds, wooden souvenirs, animal or plant materials. Australia has strict quarantine laws and tough on-the-spot fines. Every piece of luggage is now screened or X-rayed. If you fail to declare any quarantine items, or if you make a false declaration, you will get caught. In addition to on-the-spot fines, you could be accused and fined more than $60, 000 and you may risk 10 years in prison. All international mail is also screened. Some products may require treatment to make them safe. Items that are restricted because of the risk of pests and diseases will be seized and destroyed by the Australian Quarantine and Inspection Service(AQIS). In many cases, the goods you declare will be returned to you after inspection. However, any item that presents a quarantine risk will be withheld . You will be given a range of options for each item depending on the quarantine risk: Treating the item to make it safe; Holding the item until an import permit is presented*; * Re-exporting the item; Destroying the item. Those treatments with the sign "*" are subject to fees. Further information: For more detailed information about bringing in food, animals, plants, animal or plant materials, call the AQIS at 1800-020-504. We can learn from the passage that _ .
Choices:
A. you can keep the item before an import permit is presented
B. all products must be treated according to the AQIS
C. not all treatments for your declared items are free
D. travelers can sell their declared items | C |
mmlu | Question:
What safety equipment should be taken on all field trips?
Choices:
A. gloves
B. fire extinguisher
C. first-aid kit
D. goggles | C |
mmlu | Question:
Bonus culture has become the subject of many studies nowadays. Many people have been angered by the way some bankers and high officials seem to have been rewarded for failure. Others find the idea of offering many-million-dollar bonuses morally disgusting. But few have asked whether performance-related bonuses really do improve performance. The answer seems so obvious that even to ask the question can appear ridiculous. Indeed, in spite of all the complaints about them, financial encouragements continue to be introduced in more and more areas, from healthcare and public services to teaching and universities. So it may come as a shock to many to learn that paying for results can actually make people perform badly in many circumstances, and that the more you pay, the worse they perform. No one is arguing that bonuses can help companies and institutions attract and keep the best staff. Nor does anyone argue against the idea that you can encourage people to do specific tasks by linking payments to those tasks. Rather, the point is about how to get the best out of people. Do employees really perform better if you promise to pay them more for getting results? There are some obvious reasons why such payments can fail. It has been argued, for instance, that cash bonuses contributed to the financial crash, because traders had little enthusiasm to make sure that their companies enjoyed long-term survival. Most bonus projects are poorly designed, says Professor Malcolm Higgs. He thinks the reason is that organizations try to keep bonus arrangements simple. Nevertheless, he thinks bonus projects can work as long as they link the interests of individual employees with the long-term goals of a business. Bonuses can also encourage cheating. "Once you start making people's rewards dependent on outcomes rather than behaviors, the evidence is people will do whatever they can to get those outcomes," says Professor Edward Deci. "In many cases the high officials simply lied and cheated to make the stock price go up so they got huge bonuses." But the work of Deci and others suggests the problem with bonuses runs far deeper than poor design or cheating. In 1971, he asked students to solve puzzles, with some receiving cash prizes for doing well and others getting nothing. Deci found those offered cash were less likely to keep working on puzzles after they had done enough to get paid. These studies suggest that offering rewards can stop people doing things for the pure joy of it. This was the basis for a series of books by Kohn in which he argues that rewarding children, students and workers with grades, scholarships and other "bribes" leads to low-quality work in the long run. Those who believe in the power of bonuses fail to distinguish between inner drive and outside pressure -- wanting to do something because you like it for itself in contrast to doing something because you want the reward, Kohn says. "It's not just that these two are different, it's often that the more you reward people for doing something, the more their inner drive tends to decline." A "do this and get that" approach might improve performance in the short term, but over longer periods it will always fail, Kohn says. People who receive bonus will naturally play safe, become less creative, cooperate less and feel less valued, he adds. What's more, the studies also suggest that offering rewards can also stop people taking responsibility. Which do you think is the best title of the passage?
Choices:
A. What Is Bonus?
B. Does Bonus Work?
C. Why Bonus Offered?
D. How Bonus Works? | B |
mmlu | Question:
Safety and Security Procedures Your safety and the security of your personal property are of the primary concern to those of us who welcome you as our guest. We urge you to take advantage of the following suggestions. YOUR VEHICLE Lock it and don't leave money or valuable items inside. We are not responsible for their loss. TRAVELING Be good at noticing things around you when sightseeing or traveling. Stay in well-lit and heavily traveled areas. Don't display large amounts of cash. GUEST ROOM SECURITY For additional security use the deadbolt provided on your door and make sure the windows are locked. As an additional precautious measure, please secure the secondary locks provided. Do not admit anyone to your room without first making identification . A one-way viewer is provided in your door to assist with identification. If there is any doubt about the person's identity, please contact the Front Desk. SAFETY BOXES Do not leave money or valuables in your room or vehicle. We provide free safety boxes for your use. Hotel is not responsible for items left in the room valued over $200. KEYS Safeguard your key. Please do not leave it in the door. Do not give your key to others or leave it unattended. Please leave your key at the Front Desk when you check out. REPORTING Please report any suspicious activity, or safety concerns to management. FIRE Please familiarize yourself with the nearest fire exits. Report fire or smoke to the hotel guard. In the unlikely event of a fire, please move quickly and calmly to the nearest safe exit and leave the building. Avoid the use of elevator. Which of the following is TRUE?
Choices:
A. It is advised to travel to places where there are few people.
B. The hotel is not responsible for anything you lose.
C. Don't report to the manager unless you are sure something is going wrong.
D. You'd better use the deadbolt and the secondary locks for safety. | D |
mmlu | Question:
One day, around Christmas time, fishermen off the west coast of Peru started on their traditional fishing trip. Much to their surprise, there were no fish! They knew immediately what had happened. Tales from years gone by had told them this was the result of El Nino which sometimes stop fishing for many months! El Nino is a warm _ that comes and goes along the west coast of South America. It got its name from fishermen in Peru more than a century ago. Every few years, they noticed a sudden warming in the normally cool Pacific water where they fished. Because this warming often came about around Christmas, they called it El Nino, which is Spanish for the "Christ Child". Generally, El Nino occurs every three to seven years and lasts only a few weeks to a month or more. El Nino warms the water it flows through. Because the fish and sea birds need cold water to live, many of them die when El Nino comes through. El Nino also causes both floods and droughts. It is believed that El Nino may have caused the 1993 Mississippi and 1995 California floods. And at the same time, it may have caused droughts in South America, Africa and Australia. El Nino has occurred thirteen times within the last fifty years, bringing natural disasters to many countries such as Indonesia and Peru. However, El Nino does not often trouble China. During this period China was badly hit by El Nino only once. In 1998, North China had a terrible drought, while South China was troubled by floods. The purpose of this passage is _ .
Choices:
A. to discuss the prevention of El Nino
B. to explain how El Nino trouble farmers
C. to let us know about El Nino
D. to tell us how to prepare for El Nino | C |
mmlu | Question:
He was 11 years old and went fishing every chance he got from the dock at his family's cabin on an island in the middle of a New Hampshire lake. On the day before the bass season opened, he and his father were fishing early in the evening, catching sunfish and perch with worms. Then he tied on a small silver lure and practiced casting. The lure struck the water and caused colored ripples in the sunset, then silver ripples as the moon rose over the lake. When his pole doubled over, he knew something huge was on the other end. Finally, he very gingerly lifted the exhausted fish from the water. It was the largest one he had ever seen, but it was a perch . The boy and his father looked at the handsome fish. Then the father lit a match and looked at his watch. It was 10 P.M.--- two hours before the season opened. He looked at the fish, then at the boy. "You'll have to put it back, son," he said. "Dad!" cried the boy. "There will be other fish," said his father. "Not as big as this one," cried the boy. He looked around the lake. No other fishermen or boats were anywhere around in the moonlight. He looked again at his father. Even though no one had seen them, nor could anyone ever know what time he caught the fish, the boy could know everything by his father's clear voice that the decision could not be changed. He slowly worked the hook out of the lip of the huge bass and lowered it into the black water. The creature swished its powerful body and disappeared. The boy suspected that he would never again see such a great fish. That was 34 years ago. Today, the boy is a successful architect in New York City. His father's cabin is still there on the island in the middle of the lake. He takes his own son and daughters fishing from the same dock. He was right. He has never again caught such a magnificent fish as the one he landed that night long ago. But he does see that same fish---again and again---every time he comes up against a question of ethics . From the passage, we can learn _ .
Choices:
A. how we can get the handsome fish
B. how we master some skills of going fishing
C. how we understand our parents' words is very important
D. how we do things in good and right ways. | D |
mmlu | Question:
Hungry for Change is part of a growing movement of people who want to stop _ throughout the world . They want to make certain that people in famine areas can protect themselves from the effects of future droughts . They also want to make certain that enough help is quickly available for emergencies in all parts of the world . Hungry for Change has helped to raise millions of pounds for famine relief . It has attracted a great deal of newspaper publicity for its relief work . It has also been successful in persuading the government in prefix = st1 /Britainto increase its aid budget by several million pounds and carry out new research into improved crops . While Hungry for Change works in Britain for an end to poverty and famine in the world , Oxfam is helping to get over the fear of famine in such countries as Ethiopia and Sudan with long-term development projects . In North West Darfur , Sudan , Oxfam is helping to increase food production . In Nile Province,Sudan, Oxfam is planting trees in order to provide fuel and shelter , and to protect the soil . It is a faraway area , where rainfall is poor and conditions for agriculture and the forests are difficult . In Arba Minch,Ethiopia, Oxfam is supporting a project to supply clean water to villages . Clean water will reduce the risk of diseases, especially among children . Which of the following is NOT true according to the passage ?
Choices:
A. Hungry for Change has collected a lot of money .
B. Hungry for Change wants to help people prevent famine .
C. Oxfam is planting trees to improve agriculture in NileProvince.
D. Oxfam plans to improve agriculture in Sudanin a very short time . | D |
mmlu | Question:
If the world is trembling it is likely that motion is being caused by
Choices:
A. stony plates
B. giants
C. large dinosaurs
D. huge wolves | A |
mmlu | Question:
My name's Geoffrey Chaucer. It was 16thApril 1386, and I was in London at an inn in Southwark. Tomorrow I would go to Canterbury, to the shrine of Saint Thomas Becket, together with twenty-nine other people. Before I say more, I want to tell you about some of the people with me. First there was a knight, a good man who fought well and knew many different countries. He was a true friend to everyone, and always helped people when they needed it. His clothes were old, dark, and dirty from many years of fighting. Then there was a businessman with an expensive hat on his head. The man, who looked wealthier than he truly was, always said, "I'm doing very well." A very quick thinker, he talked about ships and the sea a lot, and showed much interest in changing money from different countries. After the businessman came a franklin with a white beard. He asked people from near and far to visit him at home as he liked eating and drinking and having a good time with others. He was an important man, he knew right from wrong, and people listened to him. There was a woman from Bath. Her face was open, and nice-looking, but she couldn't hear very well. In her red dress, she was a big woman with a big smile and big teeth, laughing a lot and talking easily. She knew all about love. So there we were, all thirty of us, at the inn. The landlord, a tall fat man, brought us the best dinner in London. He would also join our journey tomorrow. After we finished eating, the landlord smiled, suggesting "We're going to Canterbury tomorrow, and that's four days from here. One by one, let's all tell a story on the road to make the time go quicker. And to the teller of the best story we can give a free dinner here at my inn when we get back. What do you say?" We all said "yes" happily to him. Then the question for us was: _ ? According to the text, Chaucer would probably arrive in Canterbury on _ .
Choices:
A. April 19th
B. April 20th
C. April 24th
D. April 28th | B |
mmlu | Question:
It remains a curiosity and a bit of a historical mystery why we don't all drive on the same side of the road. The fact is that most people are right-handed; that's why, for much of history, drivers have stuck to the left. Ancient Romans using two-wheeled carriages are believed to have held the reins with their right hands and a whip with their left; to avoid whipping the near drivers, they favored the left-hand side the road. It's also easier for right-handers to get on a horse from the left, so riders were attracted to that side to avoid the near traffic as they climbed on and off. Finally, knights and the other drivers favored the left so they could do battle, if necessary, with their good hand. So why does most of the world travel on the right side today? Theories differ, but there's no doubt Napoleon was a major influence. The French have used the right since the late 18th century. Some say that before the French Revolution, people in upper class drove their carriages on the left, forcing the _ to the right. During the violence, fearful rich people sought to mix with the peasantry by traveling on the right as well. Regardless of the origin, Napoleon brought right-hand traffic to the nations he conquered, including Russia, Switzerland and Germany. Hitler, in turn, ordered right-hand traffic in Czechoslovakia and Austria in the 1930s. Nations that escaped right-handed conquest, like Great Britain, kept their left-handed tradition. Who had a major effect on "keep-right" traffic law?
Choices:
A. Ancient Romans
B. Hitler
C. Napoleon
D. Austrians | C |
mmlu | Question:
A paper bag is ripped into pieces. Which of these BEST describes the pieces of the bag?
Choices:
A. Stronger than the whole bag
B. Thicker than the whole bag
C. Smaller than the whole bag
D. Darker than the whole bag | C |
mmlu | Question:
Animals are natural resources that people have wasted all through our history. Animals have been killed for their fur and feathers, for food, for sport, and simply because they were in the way. Thousands of kinds of animals have disappeared from the world forever. Hundreds more are on the danger list today. About 170 kinds in the United States alone are considered in danger. Why should people care? Because we need animals. And because once they are gone, there will never be any more. Animals are more than just beautiful and interesting. They are more than just a source of food. Every animal has its place in the balance of nature . Destroying one kind of animal can create many problems. For example, when farmers killed large numbers of hawks , the farmers' stores of corn and grain were destroyed by rats and mice. Why? Because hawks eat rats and mice. With no hawks to keep down their numbers, the rats and mice multiplied quickly. Luckily, some people are working to help save the animals. Some groups raise money to let people know about the problem. And they try to get the governments to pass laws protecting animals in danger. Quite a few countries have passed laws. These laws forbid the killing of any animals or plants on the danger list. Slowly, the number of some animals in danger is growing. Animals are important to us mainly because _ .
Choices:
A. they give us a source of food
B. they are beautiful and lovely
C. they keep the balance of nature
D. they give us a lot of pleasure | C |
mmlu | Question:
Elda, the aged mother of Alice and Barry, both adults, wished to employ a live-in companion so that she might continue to live in her own home. Elda, however, had only enough income to pay one-half of the companion's $2,000 monthly salary. Learning of their mother's plight, Alice and Barry agreed with each other in a signed writing that on the last day of January and each succeeding month during their mother's lifetime, each would give Elda $500. Elda then hired the companion. Alice and Barry made the agreed payments in January, February, and March. In April, however, Barry refused to make any payment and notified Alice and Elda that he would make no further payments. For this question only, assume that there is a valid contract between Alice and Barry and that Elda has declined to sue Barry. Will Alice succeed in an action against Barry in which she asks the court to order Barry to continue to make his payments to Elda under the terms of the Alice-Barry contract?
Choices:
A. Yes, because Alice's remedy at law is inadequate.
B. Yes, because Alice's burden of supporting her mother will be increased if Barry does not contribute his share.
C. No, because a court will not grant specific performance of a promise to pay money.
D. No, because Barry's breach of contract has caused no economic harm to Alice. | A |
mmlu | Question:
NOT all memories are sweet. Some people spend all their lives trying to forget bad experiences. Violence and traffic accidents can leave people with terrible physical and emotional scars. Often they relive these experiences in nightmares. Now American researchers think they are close to developing a pill, which will help people forget bad memories. The pill is designed to be taken immediately after a frightening experience. They hope it might reduce, or possibly wipe out, the effect of painful memories. In November, experts tested a drug on people in the US and France. The drug stops the body releasing chemicals that fix memories in the brain. So far the research has suggested that only the emotional effects of memories may be reduced, not that the memories are wiped out. They are not sure to what degree people's memories are affected. The research has caused a great deal of argument. Some think it is a bad idea, while others support it. Supporters say it could lead to pills that prevent or treat soldiers' troubling memories after war. They say that there are many people who suffer from terrible memories. "Some memories can ruin people's lives. They come back to you when you don't want to have them in a daydream or nightmare. They usually come with very painful emotions," said Roger Pitman, a professor of psychiatry at Harvard Medical School. "This could relieve a lot of that suffering." But those who are against the research say that maybe the pills can change people's memories and changing memories is very dangerous because memories give us our identity. They also help us all avoid the mistakes of the past. "All of us can think of bad events in our lives that were terrible at the time but make us who we are. I'm not sure we want to wipe those memories out, "said Rebecca Dresser, a medical ethicist. We can infer from the passage that _ .
Choices:
A. people doubt the effects of the pills
B. the pill will certainly stop people's emotional memories
C. taking the pill will do harm to people's physical health
D. the pill has already been produced and used by the public in America | A |
mmlu | Question:
Read the advertisements carefully. Then answer the questions that follow. INTERESTED IN CHILDCARE? Qualified person or preschool teacher needed for busy childcare center, south of the river. Full-time work guaranteed. Immediate start necessary. The candidate must be able to work as a co-operative team member, Phone 6345 2345 for an interview and fax resume to 6345 2346. WE NEED OFFICE CLEANERS! Three people are required for professional cleaning in the CBD area. Working hours from 5:00 p. m. on Mondays, Wednesdays & Fridays. Approximately five hours per shift. A good record is necessary. Experience preferred. Phone 6345 7843 now. WANT TO WORK AS A DENTAL NURSE? This is an exciting opportunity for a qualified dental nurse with a confident and cheerful personality to work in the School Dental health Scheme. You must be able to get along well with children because work involves talking to groups about dental health practices. For further information, visit our website: _ And fax your resume to 6234 4567. FLORIST WANTED! Are you a creative and trained florist with at least two years of experience? Then this may be just what you are seeking. The city's leading Florist Artist Studio needs another part-time member on their wedding team. Please phone 6098 7888 now! Which of the following is the most important for the childcare job?
Choices:
A. Cooking skills.
B. Childcare experience.
C. The ability to start work in two weeks.
D. The ability to work well with other people. | D |
mmlu | Question:
Which two observations are both used to describe weather?
Choices:
A. precipitation and runoff
B. temperature and sky conditions
C. wind speed and erosion
D. types of clouds and deposition | B |
mmlu | Question:
A squirrel eats all of the acorns in a tree. The tree is empty, and the squirrel is still hungry, so
Choices:
A. the squirrel studies
B. the squirrel leaves
C. the squirrel breeds
D. the squirrel flies | B |
mmlu | Question:
One day Einstein is walking in a street in New York . His friend meets him and says to him, "Einstein, you should buy a new coat. Look, your coat is very old." But Einstein answers, "It doesn't matter . Nobody knows me here." After a few years, Einstein becomes a famous scientist . But he still wears the old coat. His friend meets him again and asks him to buy a new one. But Einstein says, "I don't need to buy a new one. Everyone knows me here." Some years later Einstein _ .
Choices:
A. buys a new one
B. becomes a great scientist
C. still wears the old clothes
D. Both B and C | D |
mmlu | Question:
Students are investigating which type of fruit attracts the most fruit flies. Equally sized pieces of ripe apple, peach, and banana are placed in separate containers. The containers allow fruit flies to enter, but the fruit flies are unable to escape. The containers are placed outside on a picnic table for two days. The most reliable method for collecting data is to count the number of fruit flies
Choices:
A. on all three types of fruit every two hours
B. on all three types of fruit after each fruit spoils
C. on the banana on Day 1, the apple on Day 2, and the peach on Day 3
D. on the banana after Hour 1, the apple after Hour 2, and the peach after Hour 3 | A |
mmlu | Question:
Bali Beach Resort has plenty of attractions. It is a holiday paradise . The self-styled 'Ultimate Island' certainly has plenty for everyone. Where in the world ? Bali is located just off the eastern edge of the main Indonesian island of Java. To the east is the neighboring island of Lombok. To the south of Bali lies the expanse of the Indian Ocean, while to the north is the Bali Sea. The most popular resort with holidaymakers is Ubud north of Sanur. When to go? Bali has a tropical climate year round with an average daily temperature of 31degC(87degCF). The wet season is between October and April. The dry season is between May and September, and is the busiest time to visit the island as travelers take advantage of the long hot days and little rain. Beach Bali has a string of beaches, mainly in the south of the island. Head away from Bali's beaches and a totally different world awaits you. Ubud is an easily accessible jungle resort town with a good range of hotels, shops and restaurants. The active volcano of Mount Batur is a highlight and so are the mountain lakes. Family fun All of the resorts have plenty of facilities for families. In Ubud there is a monkey park, where young ones can see monkeys that are not kept in tiny cages and an elephant park where holidaymakers can ride an elephant. Eating out All of Bali's holiday resorts offer international cooking to suit every tourist's taste, with most of the better hotels having excellent restaurants. Indonesian Bintang beer is very popular. Getting around There are a limited number of local buses. The other public transport is to take the local "bemo" minibuses. These colourful little minibuses speed around the winding roads with fares negotiated on board, so it helps to speak a little of the local language. There are also taxis and both electric bikes and cars can be hired. The least busy time to visit Bali is probably in _ .
Choices:
A. January and February
B. April and May
C. June and July
D. September and October | A |
mmlu | Question:
Many people know the names Alexander Graham Bell and Thomas Edison. However, most people don't know the name of the man who invented the television, Philo Farnsworth. Philo Farnsworth was born in 1906 and grew up on a potato farm. As a boy, he loved to learn about science, and he read a lot of science books. When he was only thirteen years old, he drew a picture of a machine that could send pictures as radio sends sounds. He got the idea from the way the potatoes were planted in the field. The potatoes grew in long lines, side by side. This made a shape in Philo's mind. This shape helped Philo think of a way to send the TV picture onto a piece of glass. But he was poor, so Philo could not try to make his idea into a machine at that time. Later, Philo worked at many different jobs. He worked with trees. He worked on broken radios. He worked on trains. He also worked as a street cleaner. At last, two rich men heard about his idea for television, and they gave him the money to make it. On September 7th, 1927, they watched Philo test the machine he built. When Philo turned on the machine, a small line could be seen on the glass. Philo said, "There you have it, electric television." Later, a big company, RCA, said they had made the first television. Philo had to spend a lot of money on lawyers to fight them. Finally, he won. Then, World War Two started in 1939. During the war, Philo spent a lot of money helping the US army instead of _ his television company. After the war, other bigger, richer companies started making televisions. In the end, Philo had to sell his company. Why does the author mention Bell and Edison at the beginning of the text?
Choices:
A. To remember both of them.
B. To prove their wisdom.
C. To introduce the topic of the text.
D. To explain their relationships. | C |
mmlu | Question:
What is it that makes a house a home ? A home is a place of companionship with people in it who love each other , who are harmonious and closer inside with one another than they are outside with those in the workplace or with classmates at school . A home is a place of companionship that it's difficult to leave. In a home there is love , sharing and appreciation , and the members help each other . I have seen families on the street. But if they live , sleep , talk , and eat together , they are a family, even if they are poorly off. You don't need a roof to make a home. The truly homeless are some of the rich people who build multi-million-dollar houses and are too busy to live in them . The truly homeless are those who have turned their home into a hotel lobby . The parents work. The children do wrong . They don't talk and eat together every day . They rarely see each other . The truly homeless people are _ with babysitters , caretakers , gardeners and maids. Parents are unaware , too busy making money outside the home that they don't live in . This is another way of looking at the rich and the homeless . Who is to be pitied ? Control of the computer and the Internet is also important to make a house into a home. If the computer is on all the time , the house turns into an office, even if everyone is at home . Many homes these days are just offices. Human communication has stopped . The computer eats up the time that one should be giving to others within the home . Using the computer moderately gives us time for gentleness , play and communication , not with a screen , but with a human being. Which of the following may serve as the best title of the passage ?
Choices:
A. How to make a house a home
B. What makes a house a home
C. Who are homeless , the poor
D. What's a home for | B |
mmlu | Question:
When Johnny Cash sings, people listen. His big, deep voice rumbles out of radios and juke-boxes across North America. His records sell by the million. Country-music fans everywhere, know his big hits. They love songs like "Hey Porter", "Ring of Fire", and "Folsom Prison Blue". Johnny Cash sings about a hundred concerts a year. People like what they hear--and what they see, too. Rugged and big-shouldered, the singer stands six-two without his black boots on. He's a two-hundred-pound package of muscle and talent. And that scar on his cheek? It's a bullet hole, of course! In the minds of most people, Johnny Cash is "Mr Tough( violent) Guy". He's an ex-drug addict who was once put in prison. His grandmother was an Indian. To keep from starving he once had to live on wild rabbits killed from forty feet away with a knife. Some people say he even killed a man. In fact, most of the Johnny Cash story is just that--a story. True, years ago he had a "drug habit "for a short time. He "popped" pills. But he never used heroin or other "hard "drugs. Sometimes he'd go wild and get locked up for a few hours. But he never served a prison sentence. There's no Indian blood in his veins. He's been a killer only in song. As for the "bullet hole", it's an old scar left by a doctor who opened a cyst . People who know Johnny Cash well say he's a "gentle guy", a "generous guy'--anything but a "tough guy". How did the stories get started? Some of them, like the story about the "Indian grandmother", he made up long ago to add excitement to his career. Others, like the "bullet hole" , simply got started. Now there's little the singer can do to change people's minds. "They just want to believe it," he says. In his private life, Johnny Cash is _ . .
Choices:
A. much wilder than he looks
B. much smaller than he is on stage
C. much tougher than he is in public
D. much more gentle than most people suppose | D |
mmlu | Question:
Can people change their skin color1 without suffering like pop king Michael Jackson? Perhaps yes. Scientists have found the gene that determines skin color1. The gene comes in two versions, one of which is found in 99 percent of Europeans. The other is found in 93 to 100 percent of Africans, researchers at Pennsylvania State University report in the latest issue of science. Scientists have changed the color1 of a dark-striped zebrafish to uniform gold by inserting a version of the pigment gene into a young fish. As with humans, zebrafish skin color1 is determined by pigment cells, which contain melanin . The number, size and darkness of melanin per pigment cell determine skin color1. It appears that, like the golden zebrafish, light-skinned Europeans also have a mutation in the gene for melanin production. This results in less pigmented skin. However, Keith Cheng, leader of the research team, points out that the mutation is different in human and zebrafish genes. Humans acquired dark skin in Africa about 1.5 million years ago to protect bodies from ultra-violet rays of the sun , which can cause skin cancer. But when modern humans leave Africa to live in northern latitudes, they need more sunlight on their skin to produce vitamin D. So the related gene changes, according to Cheng. "Asians have the same version of the gene as Africans, so they probably acquired their light skin through the action of some other gene that affects skin color1," said Cheng. The new discovery could lead to medical treatments for skin cancer. It also could lead to research into ways to change skin color1 without damaging it like chemical treatment did on Michael Jackson. ks5u Scientists have done an experiment on a dark-striped zebrafish in order to _ .
Choices:
A. find the different genes of humans'
B. prove the humans' skin color1 is similar to that of zebrafish in its formation
C. find out the reason why the Africans' skin color1 is dark
D. find out the ways of changing people's skin color1 | B |
sciq | Question:
Fe for iron and pb for lead are examples of elements known since ancient times, which have symbols based on their name in what language?
Choices:
A. spanish
B. italian
C. latin
D. arabic | C |
mmlu | Question:
It keeps your insides from falling out. It helps you warm up when you are cold, and it can cool you off when you are hot. It lets you feel things by touch. What is this? Your skin , of course! What does you skin ask for return for all the wonderful things it does? Just a little care! So let's learn how to take care of our skin. Like the heart and stomach, your skin is an organ .In fact, it is the largest organ in your body.Unless there's a problem, you may not think about your skin very much.But skin has an important job to do. Your skin is protecting you.Your skin keeps you from getting sick.When you take care of your skin, you are helping your skin do its job.Taking care of your skin today will help you have no problems in the future. Clean skin is happy skin! One simple way to take care of your skin is to keep it clean.Keeping your hands clean is very important.When washing your hands, use warm water.Wet your hands, and then use soap.You should wash your hands carefully everywhere. You'll also want to use warm water, but not too hot, when you take a bath.Use soap to clean your body.Don't forget under your arms and behind your ears! Your face needs attention, too.It's a good idea to wash your face once or twice a day with warm water. What does this passage mainly talk about?
Choices:
A. Taking care of your skin.
B. Your skin.
C. An important organ.
D. Keeping yourself from getting ill | A |
mmlu | Question:
On the way to school, a school bus driver stops the bus in front of a washroom and then he goes in. But the bus doesn't stop. After the driver gets off, the bus begins to run down the road, and there are 27 students on the bus. Luckily ,the 11-year-old student, David, goes to the driver's seat and begins to drive the school bus. He can't stop the bus, but he drives the bus away from a car. At last, he stops the bus near a shop and everyone is all right. A woman worker in the shop sees the whole thing. She says the bus nearly runs into a river. We do not know how the boy stops the car. David is very quiet about the accident , but he is a hero. "If he doesn't drive the bus, all the students will go down into the river with the bus." says a teacher in the school. Where does the driver go on the way to school?
Choices:
A. He goes to school.
B. He goes to a washroom.
C. He goes to a mall.
D. He goes to a hospital. | B |
mmlu | Question:
Why is protein an important part of a healthy diet?
Choices:
A. It is needed to change glucose to energy.
B. It is needed to store nutrients.
C. It is needed to repair tissue.
D. It is needed to produce water. | C |
sciq | Question:
Protozoa are generally difficult to identify due to what?
Choices:
A. their varied shape
B. their resting shape
C. their hidden shape
D. their formation shape | A |
mmlu | Question:
The rainbow lorikeet is a kind of parrot in the northeast of Australia. It is the most colorful and noisy bird in the world. The bird has green, orange, blue, red, yellow, purple and grey colors on its body. Rainbow lorikeets are small birds. They are usually 11 to 12 inches long and weigh 120g to 140g. It is said that they can live for over 20 years in the wild. They usually live in groups. At night, they sleep in the trees in a big group. But during the daytime, they move in much smaller groups (about 20 birds). Late in the evening, you can sometimes see a larger group flying back home. These birds spend a lot of time looking for food. Most of their food comes from trees, like flowers, nuts and fruit. But sometimes they eat insects. They can get water from the leaves that they eat or drink water directly. Rainbow lorikeets usually start to have families when they are around two years old. When they have baby birds, both the parents help to feed them. How many colors do rainbow lorikeets have?
Choices:
A. Four.
B. Five.
C. Six.
D. Seven. | D |
mmlu | Question:
WASHINGTON -- President Obama brought together the leaders of Japan and South Korea to discuss cooperation on containing North Korea and its nuclear weapons programs. Japan and North Korea have had tense relations over unresolved issues, some of them dating back 100 years. The three leaders emphasized the importance of cooperation in dealing with North Korea. The meeting took place Tuesday in the Hague, after a twoday nuclear security summit. President Obama praised South Korean President Park Geunhye and Japanese Prime Minister Shinzo Abe for overcoming their differences to discuss a serious threat to regional peace. He emphasized the importance of cooperation on the North Korean nuclear issue. Obama said the three discussed steps to deepen diplomatic and military cooperation, including joint military exercises and missile defense against Pyongyang. He said further discussions would take place next month, during his visits to Seoul and Tokyo. The South Korean president stressed the importance of a united response to North Korea, but also called on the North to choose a peaceful path. "I sincerely hope that this meeting will offer a chance for us to reconfirm our trilateral coordination and strengthen the cooperation on the nuclear front," said Park. Japanese Prime Minister Shinzo Abe agreed. "Particularly it is extremely important that we were able to confirm close cooperation among Japan, the United States and the Republic of Korea on the issue of North Korea, the three countries who would like to cooperate so that North Korea will be able to take a positive position with regard to nuclear and missile issue," said Abe. Japan and South Korea have several unresolved issues, including Japan's refusal to apologize again for crimes committed 70 years ago. Former U.S. diplomat Richard Armitage told an audience this week that painful historic injustices take a long time to heal, and that it is in Japan's interest to continue apologizing for as long as necessary. "There is a historical record of enormous generosity, achievement and respect for human rights and human freedom," said Armitage. According to the passage, what is the unsolved issue between Japan and Korea?
Choices:
A. To build a nuclear front against North Korea.
B. To apologize for crimes Japan committed during the Second World War.
C. To join a military exercise among three countries.
D. To confirm close cooperation between the two countries. | B |
sciq | Question:
What thin layer of air acts as a barrier to prevent cool air from mixing with warm air in the stratosphere?
Choices:
A. tropopause
B. endosphere
C. liposphere
D. methosphere | A |
mmlu | Question:
Experts say the temperature in Eyjafjallajokull's hole appears to have fallen to 100C, meaning it is now producing steam, not magma . But officials warned that it was too early to say whether the eruption was over completely. Ash clouds from the volcano grounded thousands of flights last month. Steinunn Jakobsdottir, a geophysicist from the Icelandic Meteorological Office, told the BBC that the volcano was "kind of not active for the moment". "The history of the volcano is such that it calms down and then it gets energy again," she said. "There are still earthquakes under the volcano, and the small earthquake is still not quite down to what it was before the eruption." 'Difficult to say' Magnus Gudmundsson, of Iceland University, flew over the volcano on Sunday and said information from heat cameras showed the temperatures at the crater had fallen below 100C. But he told the AFP news agency that nothing was promised and that the previous eruption at the volcano had lasted 13 months, from 1821-23. "It stopped and started again several times with different intervals , so it's difficult to say, difficult to give a timeline," he said. He also said it was impossible to say whether the neighbouring Katla volcano - a much larger mountain - might also erupt. At the height of its activity, the volcano sent out huge clouds of ash, which led to airlines grounding their planes for fear it could _ plane engines. It was the biggest action of closing airspace in Europe since World War II, and affected at least 10 million passengers worldwide. What do expert think Eyjafjallajokull is like now?
Choices:
A. Magma is still coming out
B. The hole appears about 100 degrees C
C. The eruption was not over
D. It is very cold. | B |
mmlu | Question:
Why is that tulip red?
Choices:
A. it's embarrassed
B. it's really yellow
C. it's sick
D. genetics | D |
mmlu | Question:
Single-celled organisms can reproduce and create cells exactly like themselves without combining genes from two different parent cells. When they do this, they use a type of
Choices:
A. asexual reproduction.
B. gamete formation.
C. natural selection.
D. sexual reproduction. | A |
mmlu | Question:
Close contacts between Japan and the rest of the world were created in the twentieth century. In the last forty years, business contacts between Japan and the West have become very important. Many foreign companies now have offices in Japan and Japanese businessmen do business around the world. Differences between Japanese and Western ways of doing business, however, often _ and make doing business in Japan difficult for foreigners. The American businessman, for example, wants to start talking business immediately. He does not want to wait. The Japanese businessman, on the other hand, likes to arrive at decisions after giving them serious thought. Another thing foreign businessmen have difficulty in understanding is when a Japanese means "Yes" or "No". This is because of cultural differences between Japanese and Western society , Which make it difficult for a Japanese to say "No" directly. In the USA, it is easy to say "No" to something one does not want to do. But in Japan, it is very difficult to say "No". To refuse an invitation or a request with "No" is felt to be impolite. It is thought to be selfish and unfriendly. So instead of saying "No" directly, the Japanese have developed many ways to avoid saying "No". These can help them avoid hurting other people's feelings. However, this often makes their ways of doing business rather difficult for foreigners to understand and follow. From the passage we can infer that _ .
Choices:
A. Japanese businessmen are good at business
B. foreign businessmen should try to know Japanese ways of doing business
C. foreign businessmen must be more polite
D. you must learn from Japanese businessmen if you want to succeed | B |
mmlu | Question:
Which of these places is worst for growing oregano?
Choices:
A. field
B. farm
C. greenhouse
D. cave | D |
mmlu | Question:
Are you afraid of moving up to senior high school? It is a completely new experience, but you shouldn't worry. We've put together a guide to help you. You are not alone Remember that everybody else in your grade is in the same boat. You may not notice it, but they are just as nervous as you are. Moving up to senior high school is a chance, not a problem. Things are different, and all you need to do is be polite and learn the new rules. The teachers will help If you don't know what to do or are worried about something, then ask for help. Teachers are probably the best people to turn to because they have experience in helping new students. Everything changes There are lots of differences between junior high school and senior high school. You will have your lessons with different teachers in different rooms. You will have homework for different subjects on different days, so make sure you get organized. Other points If you've got an elder brother or sister at senior high school, then ask them for advice. Be yourself! It sounds simple, but people will respond much better to you if you act naturally. Going to bed early makes a difference. You'll also find it easier to get up in the morning! The author says that you're not alone because other students _
Choices:
A. are polite and nervous
B. will help you
C. feel the same as you do
D. will learn the new rules with you | C |
sciq | Question:
What type of energy is clean and does not release greenhouse gases?
Choices:
A. natural gas
B. coal
C. geothermal energy
D. lithosphere energy | C |
sciq | Question:
Which germ layers are essential for animal embryos to grow and develop into a body?
Choices:
A. keratinocytes , ectoderm , mesoderm
B. histone and melatonin
C. endoderm, ectoderm, mesoderm
D. cytoplasm and chloroplasm | C |
mmlu | Question:
The Man behind Blue Jeans Levi Strauss was born in 1829 in Bavaria,Germany. He was the fifth of six children. His father sold dry goods from door to door. (Dry goods include many different things; fabric , thread,scissors,combs,buttons,yarn,etc.) In 1845, his father died. All six children decided to go to the United States. Two of Strauss' bothers started a dry goods company in New York City. Strauss' sister Fanny and her husband started a similar business in San Francisco. Strauss decided to go to the southeastern part of the United States. For eight years, he walked along the country roads selling dry goods from door to door - just like his father in Bavaria. In 1853, Strauss decided to move to San Francisco.(At that time, thousands of people traveled to California to look for gold.)On the way to California, Strauss sold almost all of his dry goods. He had only one thing left-- some _ . In California, Strauss tried to sell the canvas to the gold miners . He said they could make tents from the canvas. But they weren't interested in canvas for tents. Strauss didn't know what to do with the canvas. Then, he had an idea. Strauss could see that the miners needed new pants. There were holes in their pants because the fabric wasn't strong. He decided to make the canvas into pants. They called them " _ ". Later, Strauss stopped using canvas and used a different fabric. It was a heavy cotton fabric-- the same kind people wear today. Levi Strauss died in 1902. He never married and left his money to his nephews. He left the world much more -- the jeans that so many people wear. Choose the right order of these happenings.
Choices:
A. a b c d
B. a d b c
C. b a c d
D. b c a d | D |
sciq | Question:
A bicycle is an example of a compound machine made of many what?
Choices:
A. linked machines
B. simple machines
C. useful machines
D. interchangeable machines | B |
mmlu | Question:
I was fortunate enough to discover my love for flying when I was very young. Lucky that some things went my way: my eyesight, for example, was good enough to allow me to become a fighter pilot. And lucky that when I left the army, I found work as an airline pilot, when such jobs weren't plentiful. I still feel lucky, after all these years, to be able to follow my passion. The airline industry has its problems, and a lot of them can be troubling, but I still find purpose and satisfaction in flying. There's some freedom you feel when you're flying above the surface of the earth, no longer limited by gravity. Even at a thousand feet, you get a wider perspective. Problems that seem large down below feel smaller from that height, and smaller still by the time you reach thirty-five thousand feet. I love that flying is an intellectual challenge. If you change the angle of the nose by even one degree while traveling at a typical commercial airliner speed of seven miles a minute, it's enough to increase or decrease your rate of climb or descent by seven hundred feet per minute. I enjoy keeping track of all the calculations, staying aware of the weather conditions, working with a team while knowing closely what the plane can and cannot do. I like the challenge of that. I also like sharing my passion for flying. It's a disappointment to me that a lot of kids today aren't fascinated by flight. I've watched countless children walk past the plane without paying much attention; they're too focused on their video games or their iPods. When there are children who eagerly want a look inside "my office" at the front of the plane, it's so rewarding to see their excitement about something I care deeply about. If we aren't busy during boarding, the first officer and I enjoy inviting curious children to sit in our seats in the cockpit , ask questions, and let their parents take photos of them wearing a captain's hat. Being a pilot has a tangible end result that is beneficial to society. It feels good to take a planeload of 183 people where they need or want to go. My job is to reunite people with family and friends, to send them on vacations, to bring them to loved ones' funerals, to get them to their job interviews. By the end of a day, I feel as if I've accomplished something. All of them have their own stories, motivations, needs -- and helping them brings a rewarding feeling. This is what gets me ready for work, and one of the things I look forward to. What makes the author feel lucky is that _ .
Choices:
A. he was able to find a job as a pilot
B. his job is satisfying and totally free of trouble
C. he began flying even when he was very young
D. his physical condition enables him to be a spaceman | A |
mmlu | Question:
On any weekend throughout the year one can spend hours browsing through neighborhood flea markets.These are very popular for those who are in search of bargains and who have a keen eye for picking through what others have .They hunt and search for something they can reuse.Americans love secondhand merchandise which can be bought cheaply and restored to its original use.In many cases the condition and the quality are still good, though the style might be outdated. For some people searching through flea markets is a hobby which reaps rewards.They look for possible antiques among the items for sale or for old furniture which can be restored with a little care and used again.Many wise collectors often find rare items worth much more than their bargained price.Since prices are usually not fixed, if one is persistent a bargain can easily be struck.The owner may be selling a rare collectable and may not even be aware of its value.One of the great pleasures of shopping at such markets is the chance to bargain with the shop owner and settle for a price which one can afford and is willing to pay. Perhaps even more enjoyable than flea markets are the weekend outdoor garage sales which have now become very much a part of American culture.These are held usually in the spring and fall when the weather is still good.Usually a homeowner, having decided that he would like to clear his residence of accumulated items which are no longer useful to him, advertises in a local paper that he is holding a garage sale.More than likely the goods on display are in good condition and great buys can be found if one has the time and patience to search carefully.The home owner places items for sale on display along the driveway leading to his garage or on his front lawn and waits for people to look at what he has to sell.Old magazines, books, paintings, bicycles, ice-skates, items of clothing and electrical appliances of every sort appear on a regular basis.If the owner is in a position where he must sell his home or plans to move soon, then he may be forced to practically give things away at a price far below their true worth. When people shop at a flea market, how can they settle on a price?
Choices:
A. They can bargain on a price acceptable to both.
B. They can question their value.
C. They can expect a 50% discount.
D. They can compare with the other sellers. | A |
mmlu | Question:
A small boy at summer camp received a bag of cookies in the mail from his mother. He ate a few, and then put the rest under his bed. The next day, after lunch, he went to his tent to get a cookie. The box was gone. That afternoon a camp leader saw another boy sitting behind a tree. He was eating the stolen cookies! "That young man," he said to himself, "must be taught not to steal." He returned to the group and found the boy whose cookies had been stolen. "Billy," he said, "I know who stole your cookies. Will you help me teach him a lesson?" "Well, yes. But aren't you going to punish him?" asked the puzzled boy. "No, that would only make him hate you." the leader explained. "I want you to call your mother. Ask her to send you another box of cookies." The boy did so and soon received another box of cookies. "Now," said the leader, "the boy who stole your cookies is down by the lake. Go and share your cookies with him." "But he's the thief!" "I know, but try it--see what will happen." Half an hour later, the camp leader saw the two come up the hill, hand in hand. The boy who had stolen the cookies was trying to get the other to accept his toy knife. The other boy was just refusing the gift from his new friend. He said that a few cookies weren't that important anyway. After that, the boy who stole the cookies might _ .
Choices:
A. steal again
B. hate Billy
C. make friends with Billy
D. give Billy a bag of cookies, too | C |
mmlu | Question:
Walking home from work with a family friend, I found myself in a discussion about her daughter's going to college. It started with the mother telling me that she had no money to help her daughter go through college, which led the mother to push community college fiercely. She then started to say how she had been pushing "high-paying" fields on her daughter--doctor, engineer, lawyer, etc. When I asked her if that was what her daughter had interest in, she said no. I asked her what the point was to push her daughter into something that she didn't like, and she responded with, "I just want her to make a good fortune." After hearing her words, I would like to state that money is not everything. A high-paying job means nothing if you are miserable. I used to do a high-paid job, but it was very tiring and I had no time of my own. I didn't like it at all. Though the pay was good, I was not happy. So I'd like to tell parents, please do not force your children into a major or a career just because you think they are going to make a lot of money. They would feel terrible for taking that major or job just to comfort you. The worst part is the feeling of guilty when they decide to change that major to something they actually want or when they quit that job. Being a member of a generation who are willing to give ly everything to our kids, we know we just hope our children could live happy lives. Please do not force a career path on our children just because we think it is good for them. Give our children advice, but don't force them. The mother chose the fields for her daughter mainly because _ .
Choices:
A. her daughter really liked those fields
B. she thought those fields were interesting
C. those fields wouldn't cost much at college
D. she considered them to be high-paying fields | D |
mmlu | Question:
Not long ago, people thought babies were not able to learn things until they were five or six months old. Yet doctors in the United States say babies begin learning on their first day of life. Scientists note that babies are strongly influenced by their environment. They say a baby will smile if her mother does something the baby likes. A baby learns to get the best care possible by smiling to please her mother or other caregiver. This is how babies learn to connect and communicate with other human beings. One study shows that babies can learn before they are born. The researchers placed a tape recorder on the stomach of a pregnant woman. Then, they played a recording of a short story. On the day the baby was born, the researchers attempted to find if he knew the sounds of the story repeated while in his mother. They did this by placing a device in the mouth of the newborn baby. The baby would hear the story if he moved his mouth one way. If the baby moved his mouth the other way, he would hear a different story. The researchers say the baby clearly liked the story he heard before he was born. They say the baby would move his mouth so he could hear the story again and again. Another study shows how mothers can strongly influence social development and language skills in their children. Researchers studied the children from the age of one month to three years. The researchers attempted to measure the sensitivity of the mothers. The women were considered sensitive if they supported their children's activities and did not interfere unnecessarily. They tested the children for thinking and language development when they were three years old. Also, the researchers observed the women for signs of depression. The children of depressed women did not do as well in tests as the children of women who did not suffer from depression. The children of depressed women did poorly in tests of language skills and understanding what they hear. These children also were less cooperative and had more problems dealing with other people. The researchers noted that the sensitivity of the mothers was important to the intelligence development of their children. Children did better when their mothers were caring, even when they suffered from depression. According to the passage, which of the following is NOT the factor that influences intelligence development in babies?
Choices:
A. The environment.
B. Mother's sensitivity.
C. Their peers
D. Education before birth. | C |
mmlu | Question:
A man stayed in his house as a flood engulfed his town. Two men in a boat came to his house and offered to take him to safety. "No, thank you," said the man, "God will help me." As the waters rose, the man retreated to the second floor of his house. Now, two men in a motorboat came by and offered to rescue him. Again, the man refused, saying, "No, thank you. God will help me. " As the waters rose still higher, the man retreated again to the rooftop of his house. A plane came by, and someone inside it threw down a rope, urging the man to grab it and be pulled up into the airplane. Once more, the man declined and said, "No, thank you. God will help me. " Just then a powerful voice called out to the man, "You idiot! I sent you a boat, a motorboat and now a plane. What more do you want me to do?" Which of the following do you think is the best title for his passage _ .
Choices:
A. A Man in Floods
B. God Will Help Me
C. A Town in Floods
D. Different Ways to Help People out of Water | B |
mmlu | Question:
Mr Brown and Mr Green are in the garden. They are neighbours. Mr Green asks, "What's the matter?". Mr Brown says, "My house is too small! I want a big house!". Mr Green is very clever. He has a good idea. "Buy a dog!" says Mr Green. "A dog?" says Mr Brown. "That's a funny idea! Well, OK." So Mr Brown buys a dog. He puts it in the bedroom. "This dog is very big!" says Mr Brown. "And my bedroom is very small." The next day, Mr Brown is still sad. "My house is too small," says Mr Brown. "Buy a horse!" says Mr Green. So Mr Brown buys a horse. He puts it in the bathroom. Mr Brown says, "This horse is very big. And my bathroom is very small." Mr Brown is not happy. He says to the dog and horse, "Now go away!" After that, Mr Brown is very happy. "My house is not too small! My house is wonderful!" Which of the following is TRUE?
Choices:
A. Mr Brown is very clever.
B. Mr Green has a small house.
C. Finally Mr Green buys a new house.
D. Mr Brown doesn't live far away from Mr Green. | D |
mmlu | Question:
If you struggled to get up for work on Wednesdays, there could be a good reason--it is the day our mood reaches its lowest point. Monday has traditionally been thought of as the most depressing day of the week but according to psychologists, midweek gives more cause for concern in reality. Wednesday represented the lowest point in the week as people were furthest away from the weekend that has either just gone or is coming up and often feel too tired to go on with work. However, psychologists have found that, on average, people's moods remain about the same on each day throughout the week. To start their research, the University of Sydney scientists asked around 200 people what they thought their mood would be on each day of the week. Most said their worst moods were on Monday mornings and evenings but they became increasingly cheerful as the week went on, with their best moods falling on Friday and Saturday mornings and evenings. When asked why they believed that Friday and Saturday were best, respondents said they saw them as less-structured days when they could choose how to spend their time. The psychologists then asked a further 350 people how they felt each day. They found that, on average, people's moods remained about the same on each day throughout the week.Mondays were not as depressing as they had feared and Fridays and Saturdays were not as exciting as predicted. Professor Charles Areni, who led the study, said the day-of-the-week stereotypes stem from a cultural belief that people are generally happier when they are free to choose their activities compared to when they are engaged in paid work. In reality, he said, weekends do not often see moods change because they are frequently dominated by productive activities that may require large amounts of energy and begin to feel tired like work. "Day-of-the-week stereotypes like Monday morning blues and Thank God It's Friday are largely illusions," he said. People don't like Wednesday because _ .
Choices:
A. work seems to be endless on Wednesday
B. it is the most-structured day of a week
C. they have just had their weekend
D. weekend is still a couple of days' away | D |
mmlu | Question:
By taking a few simple techniques, parents who read to their children can greatly develop their children's language skills.It is surprising but true.How parents talk to their children makes a big difference in the children''s language development.If a parent encourages the child to actively respond to what the parent is reading.the child's language skills increase. A study was done with 30 three-year-old children and their parents.Half of the children took part in the experimental study;the other half acted as the control group.In the experimental group,the parents were given a two-hour training and they were taught to ask open-ended questions rather than yes-or-no questions.For example,the parent should ask,"What is the doggie doing?" rather than "Is the doggie running away?" The patents in the experimental group were also instructed in how to help children find answers,how to suggest different possibilities and how to praise correct answers. At the beginning of the study,the children did not differ in measures of language development,but at the end of one month,the children in the experimental group showed 5.5 months ahead of the control group on a test of expression and vocabulary.Nine months later,the children in the experimental group still showed an advance of 6 months over the children in the control group. Which of the following can be inferred from the passage?
Choices:
A. Children who talk a lot are more intelligent
B. Parents who listen to their children can teach them more.
C. Active children should read more and be given more attention.
D. The power of speech can easily he developed using proper methods | D |
mmlu | Question:
"The world's oceans are slowly getting more acidic." say scientists. The researchers from California report that the change is taking place in response to higher levels of carbon dioxide in the atmosphere. The lowering of the waters' PH value is not great at the moment but could cause a serious threat to current ocean life if it continues, they warn. Ken Caldeira and Michael Wickett, from the Lawrence Livermore National Laboratory, report their concerns in the journal Nature. Increasing use of oil fuels means more carbon dioxide is going into the air, and most of it will eventually be absorbed by seawater. Once in the water, it reacts to form carbonic acid. Scientists believe that the oceans have already become slightly more acidic over the last century. These researchers have tried to predict what will happen in the future by combining what we know about the history of the oceans with computer models of climate change. "This level of acidity will get much more extreme in the future if we continue releasing CO2into the atmosphere," said Dr Caldeira. "And we predict the amount of future acidity will exceed anything we have seen over the last several hundred million years." However, it is not ly clear what that means for ocean life. Most organisms live near the surface, where the greatest PH change would be expected to occur, but deep-ocean life forms may be more sensitive to PH changes.Coral reefs and other organisms whose shells contain calcium carbonate may be affected if the water's acidity levels keep going up, the team predict. In recent years some people have suggested storing carbon dioxide from power stations in the deep ocean as a way of dealing with global warming.But Dr Caldeira said that such a strategy should now be re-considered. "Previously, most experts had looked at ocean absorption of carbon dioxide as a good thingbecause in releasing CO2into the atmosphere we warm the planet, and when CO2, is absorbed by the ocean, it reduces the amount of greenhouse warming." The ocean is becoming more acidic due to _ .
Choices:
A. the lower water PH value
B. the warming atmosphere
C. the higher level of CO2in the air
D. the increasing use of fuels | C |
mmlu | Question:
Global Positioning Systems are now a part of everyday driving in many countries.These satellitebased systems provide turnbyturn directions to help people get to where they want to go.However,they can also cause a lot of problems,send you to the wrong place or leave you completely lost.Many times,the driver is to blame.Sometimes a GPS error is responsible.Most often,says Barry Brown,it is a combination of the two. Barry Brown is with the Mobile Life Centre in Stockholm,Sweden.He told us about an incident involving a friend who had flown to an airport in the eastern United States.There he borrowed a GPSequipped car to use during his stay.Mr Brown says,"They just plugged in an address and then set off to their destination.And,then it wasn't until they were driving for thirty minutes that they realized they actually put in a destination back on the West Coast where they lived.They actually put their home address in.So again,the GPS is kind of 'garbage in garbage out'." Mr Brown says this is a common human error,but what makes the problem worse has to do with some of the shortcomings,or failures,of GPS equipment.He says,"One problem with a lot of the GPS units is they have a very small screen and they just tell you the next turn.Because they just give you the next turn,sometimes that means that it is not really giving you the overview that you would need to know that it's going to the wrong place." Mr Brown says,"One of the things that struck us,perhaps the most important thing was that you have to know what you're doing when you use a GPS.There are these new skills that people have developed.There are these new competencies that you need to have to be able to use a GPS because they sometimes go wrong.This goes against a common belief that GPS systems are for passive drivers who lack navigational skills." Barry Brown says to make GPS systems better we need a better understanding of how drivers,passengers and GPS systems work together. What's the main idea of the text?
Choices:
A. GPS systems are helpful for drivers.
B. Driving with GPS can be difficult to navigate .
C. Drivers should understand how GPS systems work.
D. Drivers should learn to use GPS systems correctly. | B |
mmlu | Question:
Life on earth depends on water, and there is no substitute for it. The current assumption is that our basic needs for water--whether for drinking, agriculture, industry or the raising of fish--will always have to be met. Given this premise , there are two basic routes we can go; more equal access to water or better engineering solutions. Look at the engineering solutions first. A lot of my research concentrates on what happens to wetlands when you build dams in river basins, particularly in Africa. The ecology of such areas is almost entirely driven by the seasonal changes of the river--the pulse of the water. And the fact is that if you build a dam, you generally spoil the downstream ecology. In the past, such problems have been hidden by a lack of information. But in the near future, governments will have no excuses for their ignorance. The engineers' ability to control water flows has created new kinds of unpredictability, too. Dams in Africa have meant fewer fish, less grazing and less floodplain agriculture, none of which were expected. And there average economic life is assumed to be thirty years. Dams don't exist forever, but what will replace them is not clear. The challenge for the future is to find new means of controlling water. Although GM technology will allow us to breed better dry-land crops, there is no market for companies to develop crops suitable for the micro-climates of the Sahel and elsewhere in Africa. Who is going to pay for research on locally appropriate crops in the Third World? The last sentence probably implies that _ .
Choices:
A. No one will invest in developing locally appropriate crops in Africa
B. Researchers have no interest in developing dry-land crops
C. Research on locally appropriate crops in the Third World may be profitable
D. There is less water resource in the Third World | A |
mmlu | Question:
German academics believe they have solved the centuries-old mystery of the "Mona Lisa" in Leonardo ad Vinci's famous portrait . Lisa Gherardini, the wife of a wealthy Florentine merchant, Francesco del Giocondo, has long been seen as the most likely model for the sixteenth-century painting. Art historians have wondered whether the smiling woman may actually have been da Vinci's lover or mother, or the artist himself. Now experts at the prefix = st1 /HeidelbergUniversitylibrary say old notes made in a book by its owner in October, 1503, confirm that Lisa del Giocondo was indeed the model for the famous portrait in the world. "All doubts about the identity of the Mona Lisa have been removed by a discovery by Dr. Armin Schlechter," the library said in a statement on Monday. "Until then, only 'scant evidence' from sixteenth-century documents had been available. These had left lots of room for doubt, and many different identities were put forward." The comments compare Leonardo to the ancient Greek artist Apelles, and say he was working on three paintings at that time, one of which was a portrait of Lisa del Giocondo. Art experts say the Heidelbergdiscovery is a break-through, and the earliest mention linking the merchant's wife to the portrait. Before this discovery the earliest link dated from around 1550, and was made by Italian official Giorgio Vasari, the library said, adding that there had been doubts about Vasari's reliability. The Heidelbergnotes were actually discovered over two year's ago in the library by Schlechter, a spokeswoman said. Although the findings were published in the library's catalogue, they were not widely publicized, and received little attention until a German broadcaster decided to do some recording there, she said. What is the model for the "Mona Lisa", according to experts at the library?
Choices:
A. Lisa Gherardini.
B. Francesco del Giocondo.
C. da Vinci's lover.
D. da Vinci's mother. | A |
mmlu | Question:
On Tuesday, Apple' CEO, Tim Cook, announced the Apple Watch. It is like a normal watch, but it can do all the things a mobile phone does -- and more. At US $349, the Apple Watch is expensive. _ However, it seems that it will open another door for the use of computers. The watch taps you whenever a new message comes in. It prepares answers to questions you receive from friends. It checks your health. "It's the most personal product we've ever made," Cook said. If the Apple Watch becomes popular, it will change the way the world communicates with computers. "It might not only be a change for Apple, but for the whole industry," says technology expert, Daniel Ives. How does it work? The Apple Watch has a speaker that users can both hear and feel. You can press the side button to communicate with people quickly and easily. The Apple Watch also introduces health and fitness apps that can help people lead healthier lives. You can try it. According to Matt Vella, a writer for TIME magazine, the watch is "the most thrilling product since the iPad." After actually trying the watch, he says: " There's a lot we don't know about the Apple Watch. How long will its battery last? How exactly will it connect with the iPhone? But wearing the watch answers some other questions. It is very comfortable. You can easily forget you are wearing the Apple Watch." Who is Tim Cook according to the passage?
Choices:
A. An officer .
B. An editor.
C. A writer.
D. A teacher. | A |
mmlu | Question:
In England, we look forward to our birthdays for 364 days a year! We invite special people to celebrate it with us. The Presents Presents are opened as soon as the children are awake. They can't wait for the birthday cake later in the day! The Cards Friends and family send birthday cards. Sending birthday cards is a custom that began in England about 100 years ago. The Party The birthday child will have a party to which friends and family are invited. Visitors to the party bring presents for the birthday child. The children play games such as musical chairs and pass the parcel . The Cake The birthday cake is decorated on a theme . A candle for each year is lit and placed on top and the child blows out the candles making a wish. We don't put objects inside the cake as stated on many websites. The Bumps It used to be traditional for the birthday child to have the bumps. Friends would hold the child by the legs and under the arms and lift the child up and down bumping them gently on the ground. The number of bumps given is the age of the child plus one for extra good luck. As this can be dangerous, clapping is often done instead. The Sweets Some children do take sweets to school to share with their classmates on their birthdays. If Alice is celebrating her 7th birthday, how many bumps will she be given?
Choices:
A. Six.
B. Seven.
C. Eight.
D. Nine. | C |
mmlu | Question:
Good morning, everyone! I'm Miss Li. I am an English teacher. There are 24 boys and 22 girls in my class. This is Betty. She's an American girl. She likes football. This is Tony. He is an English boy. He likes basketball. His favourite day is Saturday and yellow is his favourite colour. He likes spring because it's warm. This is Li Daming. He's Chinese and he likes table tennis. White is his favourite colour. He likes flowers and flying kites in spring, so spring is his favourite season. Miss Li is _ .
Choices:
A. a worker
B. a student
C. a teacher
D. a doctor | C |
arc_challenge | Question:
How do coal and the sun compare as sources of energy?
Choices:
A. Coal is renewable, and the sun is renewable.
B. Coal is renewable, and the sun is nonrenewable.
C. Coal is nonrenewable, and the sun is renewable.
D. Coal is nonrenewable, and the sun is nonrenewable. | C |
mmlu | Question:
(Happy Children's Day!) Come and see the Indian elephants and the tigers from America. The bears are waiting to meet you, and the monkeys from Thailand are waiting to throw things at you. The lovely dogs from Australia are waiting to laugh at you, and the giraffes from Zambia are waiting to look down on you. Tickets: Adults: Y=60, Children: free Time: June1-June2 9:00 a.m.-----7:00 p. m Keep the park clean! Do not touch, give food or go near the animals. Visitors can't _ .
Choices:
A. give some food to the tigers
B. watch the bears playing games
C. laugh at the dogs from Australia
D. take some pictures | A |
mmlu | Question:
As society advances and basic needs are most often being met, things that were not considered important in the past have taken priority . In the past, people could easily get a job and progress pretty well, as long as they were hard-working; education was important but not as crucial as it is today. Nowadays, just as clothes are important to first impressions, degree is important to a person's first job interview or even a job with a good salary. Although experience is important to survive in any trade or profession, the first thing that companies look for is that piece of paper before looking at one's experience. A passport into the world of any profession is what having a degree means today, especially for professions that have need of certification and pay well, such as architects, doctors, lawyers, and teachers. That piece of paper, the degree, is also a passport to jobs in top or middle management in any company, especially so for multi-national corporations . Having a degree opens up opportunities that one would not have had if one did not have any kind of degree. A degree simply proves that one has gone through the necessary training and understanding of how to carry out a job. Although there are many that may say having a degree may not necessarily equal to success, _ would most definitely help any person achieve success in shorter and easier steps. Success cannot simply be a result of hard work and/or depending on one's experience or degree alone; it is the art and knowledge of how to work that determines one's success. Therefore, it should not be for the sake to get a degree, but the quality of the degree and experiences that one can learn from that matter as well. What would be the best title for this passage?
Choices:
A. People used to be hard-working
B. How important is the degree?
C. How can we enter the top management?
D. Degree surely leads to success | B |
mmlu | Question:
The week after Jane's birthday, Barbara and Mary were away. Jane decided to have a late birthday party. She telephoned several friends. She asked some to bring records, some to bring food and others to bring something to drink. She rang another friend to see if she could borrow his record player. She herself bought some food and drink to get the party going. She took up all the carpets so that they could dance. She did not know whether Barbara and Mary would have approved , but as long as she was careful, she was sure that they would not mind. She warned the two people in the flat above and invited them down. "Oh, " said Jane, surprised. "What's all this about? " The first guests arrived soon after eight. The music was soon playing loudly and they started dancing. Some of Jane's friends brought other friends with them. As more and more people arrived,the noise increased. People started shouting at each other, so they turned the music up. This made it more difficult to hear each other above the music, so they shouted more loudly. At half past ten the bell rang. "Turn down the music!" someone shouted. "Someone probably called the police." When Jane opened the door, there was a policeman standing there. She started to apologize, "I'm sorry about all the noise, officer. But you see, it was my birthday last week and I'm having a party." "Never mind about that, miss. We're here because of something much more important." "Well, there's been a report of burglary . We think the thief may have come to your party, pretending to be a friend of someone here. " When did Jane have the party?
Choices:
A. On her birthday.
B. After her birthday.
C. Before Barbara and Mary left.
D. As soon as she telephone her friends. | B |
mmlu | Question:
Invisible ink has fascinated kids for generations. You might think that it would be difficult to make, but it's not. All you'll need for this experient is some milk; some white paper; a clean cotton swab or small, clean paintbrush; the kitchen stove; and help from an adult. The most difficult part of this mini-project is choosing the message that you'll write with your invisible ink. Maybe you'll want to pretend that you're a spy on a secret mission, writing messages that would lead to big, big trouble if they were discovered. Choose your words carefully. All you need to do is, using the brush of cotton swab, write your message with milk on the paper. Don't use a lot of milk and soak the paper. Use just enough to make a thin coating. Once you've finished writing, ask the adult who's helping you to turn on the kitchen stove to a low heat. Very carefully, using kitchen mitts ,hold the paper about a foot above the warm burner. If you don't see results, you may have to make the burner a little hotter. Do not, however, hold the paper low over the burner. As the paper heats up, your message will become brown and you'll be able to see what was written. You want to know why? It's because chemical compounds in the milk have a low burning point. When the paper gets warm, those compounds will heat up and trun brown, while the paper will be unaffected. You also can try this experiment with other liquids, such as orange juice, lemon juice, vinegar, and apple juice. Just be sure to follow all safety rules and have an adult around to help you. This passage is intended for_.
Choices:
A. adults
B. people
C. teachers
D. children | D |
arc_easy | Question:
A star is a large astronomical body that
Choices:
A. reflects light.
B. condenses light.
C. emits light.
D. absorbs light. | C |
mmlu | Question:
On Tuesday, Apple' CEO, Tim Cook, announced the Apple Watch. It is like a normal watch, but it can do all the things a mobile phone does -- and more. At US $349, the Apple Watch is expensive. _ However, it seems that it will open another door for the use of computers. The watch taps you whenever a new message comes in. It prepares answers to questions you receive from friends. It checks your health. "It's the most personal product we've ever made," Cook said. If the Apple Watch becomes popular, it will change the way the world communicates with computers. "It might not only be a change for Apple, but for the whole industry," says technology expert, Daniel Ives. How does it work? The Apple Watch has a speaker that users can both hear and feel. You can press the side button to communicate with people quickly and easily. The Apple Watch also introduces health and fitness apps that can help people lead healthier lives. You can try it. According to Matt Vella, a writer for TIME magazine, the watch is "the most thrilling product since the iPad." After actually trying the watch, he says: " There's a lot we don't know about the Apple Watch. How long will its battery last? How exactly will it connect with the iPhone? But wearing the watch answers some other questions. It is very comfortable. You can easily forget you are wearing the Apple Watch." This passage is about _ .
Choices:
A. how to choose the Apple Watch
B. why people buy the Apple Watch
C. a new product
D. a new method | C |
mmlu | Question:
An American writer, Mr Green once said, "Everybody talks about the weather, but nobody does anything about it." It is true that everybody talks about the weather. Many people begin their talks by saying, "Isn't it a nice day?" "Do you think it will rain?" "I think it's going to snow." Many people think they can tell what the weather is going to be like. But sometimes they don't agree with each other. One man may say, "Do you see how cloudy it is in the east? It's going to rain tomorrow." Another man will say, "No, it's going to be fine tomorrow." People often look for the weather they want. When a farmer needs water, he looks for something to tell him it's going to rain, and he doesn't look for anything else. When friends have a picnic, they hope the weather is going to be fine and they can sit eating their lunch under the blue sky. Almost everyone listens to what the weatherman says. But he doesn't always tell us what we want, and sometimes he makes a mistake. Still, he is right most of the time. People sometimes have different ideas about _ .
Choices:
A. what the weather is going to be like
B. what we should do about the weather
C. how to begin a talk
D. how to have fine weather | A |
mmlu | Question:
Johnny was in his backyard. He held a big basket full of clean clothes for his mother to hang. A little spotted dog ran into their backyard. He jumped up and grabbed a sock from Johnny's basket! He ran as fast as he could and disappeared into the bushes. "I must get that sock back!" Johnny said. "That sock is my favorite!" He ran into the bushes after the little spotted dog. Johnny saw Mr. Wilson in the next yard over cooking at his grill. "Mr. Wilson," Johnny said. "Did you see a dog with a sock?" "I sure did!" Mr. Wilson said. "The little dog ran around and around and then ran into the next yard!" Johnny ran after the dog into the next yard. He saw Mrs. Tomly reading a book on a chair. "Mrs. Tomly," Johnny said. "Did you see a dog with a sock?" "I sure did!" Mrs. Tomly said. "The little dog ran around and around then ran into the next yard!" Johnny ran after the dog into the next yard. There, he saw a cat laying on a table. "Mr. Cat," Johnny said. "Did you see a dog with a sock?" The cat opened one eye. Then it pointed to the next yard over with his tail. Johnny ran into the next yard. He saw Mrs. Han sitting on a chair petting the little spotted dog. The dog had his sock. "That is my sock!" Johnny said. Mrs. Han smiled and gave Johnny back his sock. "Sparky here only wanted to play." Johnny petted Sparky. "I want to play too," he said to the dog. "As long as you do not steal my socks!" Sparky barked happily. He and Johnny played the rest of day together. Why did Sparky steal the sock?
Choices:
A. He wanted to give it to Mrs. Han
B. He wanted to eat it.
C. He dislikes clean clothes.
D. He wanted to play. | D |
mmlu | Question:
T-shirts on sale Item 1: This classic T-shirt is now available in youth sizes. Made from 100% organic cotton, this white T-shirt with a four-color Google logo is a great fit for both boys and girls. It has double-needle sleeves and a double-needle bottom hem ,and comes in children sizes XS-8,S-10,M-12 and L-14. Price:$9.65. Item 2: The softest, smoothest, best-looking, organic cotton T-shirt available anywhere. This T-shirt is made of 100% organic cotton and is specially designed to satisfy women's need. Price:$13.25. Item 3: Talk about user-friendliness--not only does this ladies' T-shirt look great. It's likely to be the most comfortable piece of clothing you own. Made of 70% bamboo and 30% cotton, it's antimicrobial . This shirt is so soft, and you may find strangers asking if they can touch you. Color: red with a Google logo screened on the left sleeve in white. Price :$8.86 Item 4: 100% organic cotton T-shirt. This shirt has a flattering and stylish fit for any body type. Other characteristics include a reinforced shoulder construction to maintain shape through repeated washings, and a durable double-needle bottom hem. It comes in white with a full color YouTube logo. Price :$14.50 Item 5: This super comfortable full-zip T-shirt not only meets your eyes. Its unseen benefits include moisture-wicking and antimicrobial _ .It is made of 56% cotton,16% bamboo, and 28% polyester. Price :$55.20. Item 6: Your purchase of this 100% African organic cotton T-shirt supports the Edun Live cause, which helps create jobs in Africa. These shirts are referred to as "grow to sew African " meaning the farmers, ginners, millers, and stitchers in Africa benefit every time an order is placed. This comfortable and stylish shirt comes in natural color. Price :$13.00. One of the unique characteristics of Item 3 is that _ .
Choices:
A. it can be washed repeatedly
B. it is made of 100% organic cotton
C. it is mainly made of bamboo
D. it is comfortable and user-friendly | C |
mmlu | Question:
if a place has clean air, food, water and safe shelter for an animal, what would happen?
Choices:
A. the species would have to emigrate
B. the species would thrive
C. the species would die off
D. that animal type would be depleted | B |
mmlu | Question:
A butcher watching over his shop was really surprised when he saw a dog coming inside the shop. He went over to the dog and noticed it had a note in its mouth. He took the note and it read "Can I have 12 sausages and a leg of lamb, please. The dog has money in his mouth, as well." The butcher looked carefully and was surprised to find that there was really a ten-dollar note there. So he took the money and put the sausages and lamb in a bag, placing it in the dog's mouth. The butcher was so impressed, and since it was about closing time, he decided to shut up shop and follow the dog. So off he went. He followed the dog to a bus stop. The dog stopped and started looking at the timetable. The dog checked out the time, and then sat on one of the seats provided. Along came a bus. The dog walked around to the front, looked at the number, and went back to its seat. Another bus came. Again the dog went around to the front, looked at the number and climbed on. The butcher, by now, open-mouthed, followed it onto the bus. The bus traveled through the town and out into the suburbs. Eventually the dog got up, and moved to the front of the bus. It stood on two back paws and pushed the button to stop the bus. Then it got off with groceries still in its mouth. Well, the dog and the butcher were walking along the road, and then the dog turned into a house. It walked up the path, and dropped the groceries on the step. Then it walked back down the path, took a big run, and threw itself against the door. Then again, it threw himself against it. There's no answer at the house. so the dog waited at the door. The butcher watched as a big guy opened the door, and started shouting at it. The butcher ran up, and stopped the guy. "Why do you shout at the dog? It is really a genius." The guy responded, "You call this clever? This is the second time this week that this stupid dog's forgotten its key." Why was the butcher surprised when he saw the dog?
Choices:
A. Because there was a note in the dog's mouth.
B. Because a dog was not supposed to come into his shop alone.
C. Because the dog was not afraid of being butchered.
D. Because the dog could read. | B |
mmlu | Question:
China is casting a huge shadow on the United States that many Americans are struggling to learn Chinese in order to maintain their competitive edge. "Interest in learning Chinese among American youth and their parents has grown dramatically in the past five years," said Vivien Stewart at the Asia Society, a US grow trying to bridge the gap between Americans and people of Asia and the Pacific. China, the world's most popular nation, is very important to the United States because it is a leading trader, consumer and investor. Its political influence is also rising across the globe. It has replaced the United States as the world's largest consumer and could become the second largest economy country in the world, after the superpower status and its telling effects politically, economically and culturally are driving the interest to learn the language, experts say. From kindergartens to high schools, studies by the Asia Society show, there is a "rapid rise" in interest among pupils to study the Chinese language. Even though the US State Department has stressed the Chinese language "important " to national prosperity and security, the "current infrastructure to support recruitment of students and teachers as well as the growth of high quality programs is badly inadequate," an Asia Society study says. The Society has set a target of having at least 5% of American high school students learning Chinese by 2015. " Millions of Chinese are learning English, but only 24,000 Americans are learning Chinese," said Andrew Corcoran of the San Francisco - based Chinese American International School. The passage mainly tells the readers that _ .
Choices:
A. Americans enjoy learning foreign languages
B. Chinese is becoming hot in the USA
C. Language is a cultural bridge between the US and China
D. Economy decides language studying | B |
sciq | Question:
During what in the small intestine do rings of smooth muscle repeatedly contract and then relax?
Choices:
A. mitosis
B. segmentation
C. compression
D. contraction | B |
sciq | Question:
Osteoclasts and osteoblasts play key roles in repair of what?
Choices:
A. liver
B. heart
C. bone
D. brain | C |
mmlu | Question:
If an organism dies what happens to that organisms population?
Choices:
A. relaxes
B. cries
C. increases
D. subsides | D |
mmlu | Question:
Will life in the future be better, worse or the same as now? Futurologists predict that life will probably be very different in 2050. First of all, it seems that TV channels will have disappeared by 2050. A computer will send the program directly to the television. On TV screen appear holograms , which are pictures with certain height, width and depth. We will be able to see, smell and touch the things that we see on television. Water has become one of our most serious problems. Agriculture is changing and people are growing more fruit and vegetables to export. Demand for water will increase ten times in 2050. Some futurologists predict that water will be the cause of war if we don't act now. In transport, cars will run on new fuels and go very fast. A car will have computers to control its speed and there won't be any accidents. On the other hand, space planes will take people around the earth in about three hours. People will fly from Los Angeles to Tokyo by space plane in just half an hour. In the field of technology, robots will have replaced people in factories. By 2050, we will see robots everywhere. They do not ask for pay rises or go on strike, and they work 24 hours a day. Medicine technology will have conquered many diseases by 2050; we will be able to help blind and deaf people see again and hear again. Scientists have discovered how to control genes. They have already produced clones of animals and will be able to produce clones of people and decide how they look, how they behave and how much intelligence they have. If you want all this to come true, you should study science and technology hard. What isn't mentioned about the future in 2050 in the passage?
Choices:
A. Technology.
B. Medicine.
C. Movies.
D. Agriculture. | C |
mmlu | Question:
Which best determines the number of wolves that can live in an area?
Choices:
A. the amount of snow in the area each year
B. the number of birds that live in the area
C. the number of trees in the area
D. the amount of food available in the area | D |
mmlu | Question:
Does stress cause gray hair? Many people believe that tension and stress can cause your hair to lose its color.In fact,it is an old wives tale that being upset all the time can result in premature graying.Here is a closer look at this situation and why some believe that this old wives tale could be true. As one ages,the hairs on the head also age.In fact,just about everything on the human body begins to show signs of wear and tear after a while.The joints wear and become stiff and skin wears and becomes wrinkled.Hairs on the head grow and eventually die.They are replaced,but in the process something else happens. When new hairs are replaced,the color or pigment is also added to them.However,as one ages,this pigment becomes less and less available.At first,hairs will have a limited amount of pigment and they will appear to be grayish in color.In time,they will lose all of their pigment and will be white.Many things are known to cause graying.and genetics is a very powerful factor.If one of your parents turns gray at an early age,there is a good chance that you will too.Some people begin the graying process in high school,while others may be over the age of forty. Constant worry and tension can have many harmful effects on the human body.It is a known fact that stressful times can cause one to suffer hair loss.It would make sense that if it can cause these problems,perhaps it also may contribute to graying.However,there is no sound evidence to support this. On the other hand,many medical professionals believe that there may be a link:between graying and a constant state of anxiety or tension.Does stress cause gray hair? There is no scientific evidence to support the theory,but it is best to avoid stressful situations. What might play the most important role in the graying process?
Choices:
A. Genetics and the amount of sleeping time
B. The amount of food people eat and living environment
C. The amount of pigment and genetics
D. Genetics and the amount of water people drink | C |
mmlu | Question:
All plants require this
Choices:
A. humans
B. insects
C. H2O
D. trees | C |
mmlu | Question:
In the world , football is the most popular sport. This is because many countries have wonderful teams for the World Cup. The World Cup is held every four years. To remember 2002 FIFA World Cup, children from different countries and more than 60 children from Japanese schools came together and drew a big picture called "Dream World Cups "for a few days in Japan .The children drew animals, flowers and people playing soccer under a blue bright sky. They wished each football team good luck by drawing the flags of all the countries that would take part in the World Cup in Japan and South Korea. The picture was put up in a park near a playground in Yokohama .Some football teams would have games there. Are you a football fan?The World Cup makes more and more people interested in football Teenagers like playing and watching football .Many of them love some football stars so much that they get the pictures of their favourite players on the walls of their rooms. That is the way to show their love for the World Cup as children in Japan. In "Dream World Cup", the children drew the flags of some countries _ .
Choices:
A. to show their love for their owe country
B. to tell the people their stories
C. to show their good wishes for the football teams
D. to show their new ideas about football | C |
mmlu | Question:
There are many colours in nature. But do you know that a colour has weight? I think you'll say "no". But I am afraid you are wrong. If you don't believe, you may do a small experiment . First, put two objects with the same weight into two boxes. Then cover the boxes. Wrap one box with a red piece of paper, the other with a white piece of paper. Now hold the boxes with your hand one by one. It is certain that you will think the red one is a little heavier. Why does it happen? A scientist found that different colours have different weight in a man's mind. So he did many tests and at last he got the result. That is to say, every colour has its own weight in our mind. The heaviest colour is red, then blue, green, orange, yellow and white. The scientists told us that colours also have smell. Can you smell the colour? Of course not. Then why did the scientists say so? That is because every colour represents a kind of light wave ------ a certain wavelength . It reaches our brain through organs According to this discovery, scientists say that people accept the colour they like, and _ the colour they hate. So your body and mind will be healthy by using the colours you like. Or you'll be nervous or even get ill. If you stay in a room with red windows, wallpapers and furniture for two hours, you'll feel you have been there for four hours. But if the room is blue, you'll feel you have been there for only one hour. Another example, if a person walks out of a red room and into a blue room, his temperature will fall. That means our body temperature will change when we see different colours. Which of the following is NOT true?
Choices:
A. Different colours have different weights in a man's mind.
B. The colour "blue" is the second heaviest colour in a man's mind.
C. People can't smell the colours.
D. The colour you don't like will keep you healthy. | D |
sciq | Question:
What term tells you how quickly the angle changes and can occur in either clockwise or counterclockwise directions?
Choices:
A. turning velocity
B. shift velocity
C. angular velocity
D. emit velocity | C |
mmlu | Question:
A science teacher filled one balloon with helium gas and a second balloon with carbon dioxide. The helium-filled balloon rose to the ceiling, and the balloon filled with carbon dioxide fell to the floor. Which statement is an inference based on this demonstration?
Choices:
A. Each balloon behaved differently.
B. Helium gas has a lower density than air.
C. Carbon dioxide causes a balloon to expand.
D. Balloons can be filled with different gases. | B |
mmlu | Question:
Jack is 10 years old, and I am his pencil. I'm Jack's helper . Jack's pencil box is my home. I have some friends here. They are seven crayons, a ruler, a pencil-sharpener and an eraser. Because Jack loves me, I'm the king in the pencil box. My friends and I are happy every day. Today, I am not happy because a pen comes in. It's new and nice. It's a music pen. It can write and sing. But I'm old and I can only help Jack to write. Jack likes it very much! The new pen is his helper now. It's the new king. What can I do now? Shall I go to a new home? Who is the king now?
Choices:
A. The pencil.
B. The pen.
C. Jack.
D. The pencil box. | B |
sciq | Question:
Dolphins are what type of animal?
Choices:
A. fish
B. mammal
C. whale
D. reptile | B |
mmlu | Question:
Flight Distance Any observant people have noticed that a wild animal will allow a man or other potential enemy to approach only up to a given distance before it escapes. "Flight distance" is the terms used for this interspecies spacing. As a general rule, there is a positive relationship between the size of an animal and its flight distance --- the larger the animal, the greater the distance it must keep between itself and the enemy. An antelope will escape when the enemy is as much as five hundred yards away. The wall lizard's flight distance, on the other hand, is about six feet. Flight is the basic means of survival for mobile creatures. Critical Distance Critical distance apparently is present wherever and whenever there is a flight reaction. "Critical distance" includes the narrow zone separating flight distance from attack distance. A lion in a zoo will flee from an approaching man until it meets a barrier that it cannot overcome. If the man continues the approach, he soon penetrates(,)the lion's critical distance, at which point the cornered lion turns back and begins slowly stalk the man. Social Distance Social animals need to stay in touch with each other. Loss of contact with the group can be fatal for a variety of reasons including exposure to enemies. Social distance is not simply the distance at which an animal will lose contact with his group --- that is, the distance at which it can no longer see, hear, or smell the group --- it is rather a psychological distance, one at which the animal apparently begins to feel anxious when it goes beyond its limits. We can think of it as a hidden band that contains the group. Social distance varies from species to species. It is quite short --- apparently only a few yards --- among some animals, and quite long among others. Social distance is not always rigidly fixed but is determined in part by the situation. When the young of apes and humans are mobile but not yet under control of the mother's voice, social distance may be the length of her reach. This is readily observed among baboons in a zoo. When the baby approaches a certain point, the mother reaches out to seize the end of its tail and pull it back to her. When added control is needed because of danger, social distance shortens. To show this in man, one has only to watch a family with a number of small children holding hands as they cross a busy street. If a lion's critical distance is penetrated, it will _
Choices:
A. begin to attack
B. try to hide
C. begin to jump
D. run away | A |
mmlu | Question:
During adolescence , peers play a large part in a young person's life and typically replace family as the center of a teen's social activities. Some kids give in to peer pressure because they want to be liked or because they worry that other kids may make fun of them if they don't go along with the group. Others may go along because they are curious to try something new that others are doing. The idea that "everyone's doing it" may influence some kids to leave their better judgment, or their common sense, behind. As children grow, develop, and move into early adolescence, contacts with one's peers and the attraction of peer identification increases. As pre-adolescents begin rapid physical, emotional and social changes, they begin to question adult standards and the need for parental guidance. They find it good to turn for advice to friends who understand-- friends who are in the same position themselves. By trying new things and testing their ideas with their peers, there is less fear of being laughed at. There are two levels of peer pressure. The first is in the large group: for most teens a school or a youth group are examples. This is the situation that gets the most attention. The second is in the close relationship with one or several best friends. This is the situation that is sometimes _ . The large group puts a general pressure on its members. It sets the standard for clothing, music, entertainment, and "political correctness". The pressure can be avoided by keeping quiet or by putting on the appearance of agreement. Why can't some children follow their common sense?
Choices:
A. Because they want to be liked by everybody.
B. Because they don't want to make fun of others.
C. Because they are curious about their new friends.
D. Because they think all the children will do the same. | D |
mmlu | Question:
Are you looking for some new and exciting places to take your kids to? Try some of these places: . Visit art museums. They offer a variety of activities to excite your kids' interest. Many offer workshops for making hand-made pieces, traveling exhibits, book signings by children's favorite writers, and even musical performances and other arts. . Head to a natural history museum. This is where kids can discover the past from dinosaur models to rock collections and pictures of stars in the sky. Also, ask what kind of workshops and educational programs are prepared for kids and any special events that are coming up. . Go to a Youtheater. Look for one in your area offering plays for child and family visitors. Pre-show play shops are conducted by area artists and educators where kids can discover the secret about performing arts. Puppet making and stage make-up are just a couple of the special offerings you might find. Try hands-on science. Visit one of the many hands-on science museums around the country. These science play-lands are great fun for kids and grown-ups alike. They'll keep your child mentally and physically active the whole day through while pushing buttons, experimenting, and building.. When everyone is tired, enjoy a fun family science show, commonly found in these museums. What can kids do at a Youtheater?
Choices:
A. Look at rock collections.
B. See dinosaur models.
C. Watch puppet making.
D. Give performances. | C |
mmlu | Question:
Donald was arrested in Marilyn's apartment after her neighbors had reported sounds of a struggle and the police had arrived to find Donald bent over Marilyn's prostrate body. Marilyn was rushed to the hospital where she lapsed into a coma. Despite the explanation that he was trying to revive Marilyn after she suddenly collapsed, Donald was charged with attempted rape and assault after a neighbor informed the police that she had heard Marilyn sobbing, "No, please no, let me alone." At trial, the forensic evidence was inconclusive. The jury acquitted Donald of attempted rape but convicted him of assault. While he was serving his sentence for assault, Marilyn, who had never recovered from the coma, died. Donald was then indicted and tried on a charge of felony murder. In this common-law jurisdiction, there is no statute that prevents a prosecutor from proceeding in this manner, but Donald argued that a second trial for felony murder after his original trial for attempted rape and assault would violate the double jeopardy clause. His claim is
Choices:
A. correct, because he was acquitted of the attempted rape charge.
B. correct, because he was convicted of the assault charge.
C. incorrect, because Marilyn had not died at the time of the first trial and he was not placed in jeopardy for murder.
D. incorrect, because he was convicted of the assault charge. | A |
mmlu | Question:
Your computer has been playing music for years, one CD at a time. Now hundreds of songs can be stored in your PC (personal computer) if they're in the MP3 format. What is it? MP3 compresses music into small computer friendly files. You access MP3 music several ways : Music can be downloaded from websites that have converted vast music libraries into MP3. Or you can prerecord CDs into your PC and convert songs in minutes into MP3. Once MP3 music is on your PC's hard drive, you can play it through your computer's speakers, " _ " it onto blank CDs or exchange MP3 files with friends using E-mail. How much? Software needed to play and convert MP3 music is often free. It comes preinstalled on most new computers or can be downloaded from many websites, including MP3. com. Some MP3 sites are free. Just type "MP3 sites" into any search engine. The popular MP3 players start at around $50and can hold hundreds of songs. A blank CD on which you can record music costs about a dollar. Advantages MP3 turns your home PC into a tape recorder. Tiny MP3 players are the size of a card, making it easy to take hundreds of songs with you. Disadvantages You may find that music at many sites is limited. And some only allow you to listen rather than download offerings. Others let you download music that then can't be copied to MP3 players. And a growing number of new CDs make it impossible to copy songs to a computer. How much will you pay for a MP3 player?
Choices:
A. Free of charge.
B. Free downloading.
C. At about fifty dollars.
D. About a dollar. | C |
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