Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: Grandmother's Favourite Doll A little girl had a doll. She loved it so much that she would treat it with great care, even though her friends would laugh at her for being so careful. As time passed, the girl grew up, moved houses, became an adult, married, had children, and finally became a lovely little old woman with many grandchildren. One day, she returned to her hometown, found her _ house, and went in. Among hundreds of old things, the now-old little girl found her doll. It was as well looked after as before. She took it home with her and gave it to her granddaughter. Her granddaughter loved it. Each time the old woman saw her granddaughter playing with the doll, tears of joy would roll down her cheeks . She was so glad to see now it was in the hands of her granddaughter. Options: A it looked old and terrible B she threw it away C it was as well looked after as before D she took it home and kept it herself Answer: C it was as well looked after as before Question:
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The answer is:
When the old woman found her doll, _ .

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: There is a student from China in our class. He is very good at his lessons, but he is also very shy. He doesn't talk too much with us because he thinks that there are so many differences. When he came into our classroom for the first time, he was so frightened that he cried out. That's because of our appearances. For example, his hair is short, black and straight, but ours are all different from his. Jim's hair is yellow and much longer than his. Dave's hair is curly and brown. Kitty's hair is blonde. Our builds and clothes seem to be strange in his eyes,too. Peter is a boy. He is tall and thin, but he wears a colorful T-shirt. Options: A Because he is Chinese. B Because he didn't like to be a student of our class. C Because our appearances frightened him too much. D Because he was ill. Answer: C Because our appearances frightened him too much. Question:
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The answer is:
Why did the student cry out when he came into our classroom for the first time?

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: Men have always wanted to fly like birds. Birds can fly easily because they are light,but men's bodies are heavier. Men first went up into the air in balloons. These were big bags,and they were filled with gas. Hydrogen is a useful gas for balloons. It is lighter than air. _ is also lighter than air,but it costs a lot of money. So balloons are usually filled with hydrogen. Balloons have to fly with the wind as they have no engines to drive them. Later,men made airships. They are balloons with engines. They are also filled with hydrogen. Aircrafts with wings now take people across the world. Powerful engines drive these machines across the sky. Some of the engines are like the engines of cars,but they are more powerful. There is another kind of engine,we call it the jet engine. An English engineer invented the jet engine. At the same time,Germans were also building a jet engine. In May 1941,the English engineer's new engine was fixed in an aircraft,and the aircraft flew quite well. Jet engines are very powerful. Usually two to four are enough for an airplane,but some big aircraft need six. Anyone in a moving jet plane can feel the power of the engines. Jet planes can travel faster than sound. As a flying jet plane leaves its noise behind,we do not hear it until it has gone. Options: A men don't have aircraft B men's bodies are too heavy C men don't like birds D men's bodies are too light Answer: B men's bodies are too heavy Question:
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The answer is:
According to the passage,men can't fly like birds because _ .