Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: Shenzhen's fast development has made it become China's most crowded city! There are about 15 million people living on its 1991square kilometers. On each square kilometer averagely live 7500 people. It is 1080 more than that in Hong Kong, and nearly 800 more than that in Guangzhou. Besides, Shenzhen owns 2 million local vehicles, and about 300000 vehicles from other places also run on the local roads every day. The total length of the city's road is 6041 kilometers. It means each resident only owns 0.58 meters of road! As a result, the city is facing serious environmental and resource problems. One of the problems is water shortage. The amount of fresh water for each person of the city is only 25% of the country's average. What's more, most of the water drunk by Shenzhen people comes from other areas. Options: A Largest Population in China. B Biggist Problems in Shenzhen C Busiest Roads in Shenzhen D Most Crowded City in China Answer: D Most Crowded City in China Question:
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The answer is:
Which is the best title for this passage?

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: Swimming is very popular. People like swimming in summer because water makes people feel cool. If you like swimming but swim in a wrong place, it may not be safe. These years, a lot of people die when they enjoy themselves in water, and most of them are students. Some people are not careful when they are swimming. They often think they swim so well that nothing will happen to them in water. Summer is here again. If you go swimming, don't forget that better swimmers have died in water. They die because they are not careful, not because they cannot swim. So don't get into the water when you are alone. Don't get into the water if there is a " No swimming" sign. If you remember these, swimming will be safe. Options: A old people B young people C women D children Answer: B young people Question:
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The answer is:
These years many _ die in the water when they swim happily.

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: Mr. and Mrs. Wilson lived in a big city, and one summer they went to the country for their vacation. They enjoyed it very much, because it was a quiet, clean place. One day they went for a walk early in the morning and saw an old man. He was sitting alone in the warm sun in front of his house. Mr. Wilson asked him, "Do you like living in a quiet place?" The old man said, "Yes, I do." Mr. Wilson said," What are the good things about it?" The old man answered, "Well, everybody knows everybody. People often come and see me, and I often go and see them. And there are lots of children here. "Mr. Wilson said, "That's interesting. And what are the bad things?" The old man thought for a few minutes and said, " Well, the same things, really." Options: A Everybody knew each other. B Everybody didn't know each other. C It was clean and quiet. D It was nice. Answer: A Everybody knew each other. Question:
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The answer is:
What did the old man think were the good things about the country?