根据课文内容，回答下列问题。
1. How many years does the sport of basketball have a history of?
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2. Where can basketball be played?
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3. Can you say something about the aim of basketball?
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4. Is playing basketball dangerous? Why?
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5. What is the text mainly about?
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1. It has a history of more than a hundred years.
2. It can be played in parks, schools, and even in factories.
3. The aim of basketball is for players to try to get a ball into the basket.
4. Yes, because knocking into players and falling down would be dangerous.
5. The history of basketball.
1-5 题答案不唯一。