请认真阅读下面短文，并根据短文内容回答问题。
Jeff Keith has only one leg. When he was 12 years old, Jeff had cancer. The doctors had to cut off most of his right leg to save his life. Every day Jeff puts on a man-made leg. The leg is plastic. With the plastic leg, Jeff can ski, ride a bicycle, swim and play soccer. He can also run.
When he was 22 years old, Jeff ran across the United States, from the East to the West. He ran 5,150 kilometers. That’s about 26 kilometers each day. Jeff wore out 36 pairs of running shoes and five plastic legs.
On his way, in every city people gave Jeff money. The money which Jeff received was not for Jeff himself. It was for the American Cancer Society(协会). The society used the money to learn more about cancer. At the same time, Jeff talked to people about cancer. He also talked about being disabled.
Jeff is disabled, but he can do many things: skiing, swimming, playing soccer and running. He finished college and now he is studying to be a lawyer(律师). Jeff says, “People can do anything they want to do. I want people to know that. I ran not only for disabled people but also for everybody.”
【小题1】Why did the doctors cut off most of Jeff’s right leg?
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【小题2】How many plastic legs did Jeff wear out when he ran across the United States?
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【小题3】What did Jeff talk to people about on his way from the East to the West?
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【小题4】Did he only run for the disabled people?
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【小题5】What can we learn from this story?
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Mr. Smith is an Englishman. He teaches English well. His English classes are very interesting. He likes us and we like him, too.

Mr Smith has two children—Tom and Lucy. Tom is seven and his sister Lucy is four. Tom goes to school but Lucy doesn’t. Mr Smith likes to wear（穿 ）a T-shirt and jeans(牛仔裤).Football is his favourite sport. After school we often have a basketball match. Sometimes（有时） Mr Smith watches and joins us. He plays basketball just for fun.

1.Mr Smith is __________.

2.How many sons does Mr Smith have?

3.Lucy doesn’t go to school because ___________ .

4.________ is Mr Smith’s favourite sport.

5.The story is about _________.

Mr. Smith is an Englishman. He teaches English well. His English classes are very interesting. He likes us and we like him, too.
Mr Smith has two children—Tom and Lucy. Tom is seven and his sister Lucy is four. Tom goes to school but Lucy doesn’t. Mr Smith likes to wear（穿 ）a T-shirt and jeans(牛仔裤).Football is his favourite sport. After school we often have a basketball match. Sometimes（有时） Mr Smith watches and joins us. He plays basketball just for fun.
【小题1】Mr Smith is __________.