Question: Write a multi-choice question for the following article, with the given choices and answer: Article: All our food comes from the soil . Some of us eat meat, but animals live on plants. If there are no plants, we will have no animals and meat. So the soil is necessary for us to live. The top of ground is usually covered with grass or other plants. Plants grow in soil, which has a dark color. This dark soil is humus. Dead leaves, dead plants and animals' waste make it, but this takes a long time. When the humus has been made, plants can grow well in it. All soil needs food. If we don't give it any, the plants will be weak. Animals' waste is the best food for the soil, but chemical fertilizers are also very useful. The same crop should not be grown in the same place every year; it is better to have a different crop. A change of crop and the use of a good fertilizer will keep the land in good condition. When the soil is dry, the wind blows it away. Sometimes heavy rain carries the humus down to a river. People should grow more and more trees and grass to stop wind from carrying the humus away. It takes hundreds of years to make humus, and so we must save every bit of it. Without soil, where can we grow food? Options: A not helpful B necessary C not important D harmful Answer: B necessary Question:
Answer: From the passage, we know that soil is _ to people.

[Q]: Write a multi-choice question for the following article, with the given choices and answer: Article: Two strangers were sitting together in a plane . They were on a long journey . One of the men was a teacher . The other was a farmer . They sat without talking for a while , then the farmer said , " Let's do something to pass the time ." " What do you want to do ?" the teacher asked . " We can ask each other riddles ( )," the farmer said, " You start." " Let's make the rules first ," the teacher said . " And to make the game more interesting , let's play it for money . If we don't know the answer to the riddle , we have to pay a dollar ." The farmer thought about this for a while , then he said , " That's not fair( . You are a teacher , an educated ( ) man . You know more things than I do . I am just a farmer ." " That's true ," the teacher said , " What do you think we should do ?" The farmer said , " If you don't know the answer to a riddle ,you pay me 100 dollars .If I don't know the answer to the riddle , I'll pay you 50 dollars." The teacher thought for a while , then he said , " OK. That's fair . Who'll go first ?" "I will ," the farmer said . " Here's my riddle . What has three legs when it walks , but only two legs when it flies ?" The teacher thought and thought , " What has three legs when it walks, but only two when it flies ?" Then he said , " That's a good one . I don't know the answer ." He gave the farmer 100 dollars and said , " Tell me the answer . What is it ?" " I don't know , either ." The farmer said , and gave him 50 dollars . Options: A the farmer didn't like the teacher B the teacher didn't like the farmer C the farmer liked to tell jokes D they didn't know each other Answer: D they didn't know each other Question:
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[A]: At first the two men sat there without talking because _ .

input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: Imagine a world where air pollution is no longer a problem. Clean air is all around us. People don't have to worry about polluting the air every time they drive their cars. They no longer need to face the problem of not having enough fuel either. Although scientists have been trying for many years to develop a new kind of car that does not need gasoline , _ have been unsuccessful. Recently, however, car engineers have succeeded in creating a new kind of car that runs on gasoline and electricity . This is the famous "hybrid car". This car gets its name from the fact that it has a gasoline engine and an electric motor inside. Hybrid cars do not pollute the environment as much as the cars that are commonly used today. They also cost drivers less money because they need less fuel than ordinary cars. Hybrid cars are becoming widely popular in the United States. They are soon expected to become widely used around the world. If scientists and engineers continue to work on car development, perhaps the world with clean air that we imagined earlier just might become real in the future. Options: A like electric cars B drive cars easily C live in the world with clean air D understand how hybrid cars work Answer: C live in the world with clean air Question:
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output: The passage tells us that with the development of cars, we may _ .

input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: I Don't Have to Be Like Them All students have to face their own problems when they are growing up. You may not think that having a good family is a problem. But for me , it was. I had to face the problem of being the youngest of the Smith girls. We live in a small town in Pennsylvania, US. There are three girls in the Smith family, Amanda, Theresa and me . People often say things to me , like " Oh, the three of you , you're such nice girls. Your sisters are so pretty and so thin! You're really nothing like them . " That made me sad. At school , all of my teachers had taught my sisters . On the first day of school , they said , "Oh , the youngest of the three! I hope you're just like your sisters. They're such wonderful students." People always compared me with my sisters . So I couldn't help comparing myself with them , too. Theresa was smarter , Amanda was prettier . I began to work hard to be more like them . What my sisters did , I did , too. At last , I became drum major of our school 's marching band . Both Amanda and Theresa had been drum majors . I became editor of the school's newspaper . Theresa had been the editor two years before. But last year, Amanda went to college , and Theresa went to high school . Now I'm by myself at junior high . Everyone knows me , because I'm the drum major and the newspaper's editor . Now I don't feel like a Smith girl any more , I feel like myself . I'm proud of doing all of the same great things that my sisters did . But the best thing I did was to learn to stop comparing myself with them . Options: A she becomes much better than her sisters B she stops comparing herself with her sisters C no one compares herself with her sisters D she has graduated from the junior school Answer: B she stops comparing herself with her sisters Question:
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output:
To the author , now the best thing is that _ .