Problem: Given the 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:
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The answer is:
From the passage, we know that soil is _ to people.

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: I live on the twelfth floor of a building. One afternoon I am coming home from a friend's house. It is just after four o'clock. I get quickly into the lift and press Button 12. The lift starts to go up, but very slowly. And then, half way up, it suddenly stops between two floors. I couldn't understand it. I press an all the buttons from 1 to 14. I call for help very loudly. But nobody answers. Then suddenly the lights go out, and I am alone in the dark. I start to cry and beat the walls of the lift. I cry and cry until I have no voice left. Then, I feel hopeless, and press all the buttons with my open hands. And all at the same time, there is a bell far away. It rings and rings. It is the fire alarm . I think the whole building is on fire. I say to the God quietly, "Just get me out of here. I'll never be bad again." Just then, I realize the lift is moving very slowly. On the ground floor it stops, and the door opens. A man is standing there. "How long have you been there? It is good that you press the alarm bell. But haven't you learned to read at your school? " He points at a small piece of paper on the wall beside the lift. It says: "Attention : This lift will be stopped for repairs between 4 pm and 5 pm on Thursday, March 13." Options: A It has a fire accident. B It stops half way. C It is turned off by the writer. D It moves fast up to the top floor. Answer: B It stops half way. Question:
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The answer is:
What happens to the lift?

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: A kind of little cars may take the place of today's big ones many years later. If everyone drives such cars in the future, there will be less pollution in the air. There will also be more space for parking in cities, and the streets will be less crowded. The little cars of the future will cost less. Driving will be safer, too, since these little cars can go only 65 kilometers an hour. The cars of the future will be fine for going around a city, but they will not be useful for a long way. Little cars will go 450 kilometers before they need to stop for more gasoline . If big cars are still used with the small ones, two kinds of roads will be needed in the future. Some roads will be needed for the big, faster cars and other roads will be needed for the small, slower ones. ,. Options: A much smaller than the future one B as big as the future ones C as small as the future ones D bigger than the future ones Answer: D bigger than the future ones Question:
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The answer is:
The usual size of cars today is _ .