阅读短文并根据短文内容，完成文后的任务。（请注意问题后的字数要求）

When Terry Fox was eighteen。he got very sick．He had to go to a hospital in Winnipeg, Canada．His doctors said he had cancer．Cancer is a dangerous disease．The doctor told Terry they had to amputate(截肢) his right leg．This meant they had to cut off his leg．After the operation the doctors gave Terry a new leg made of metal and plastic．(3)Terry had to learn to walk again．

Two years later, Terry wanted to help the hospital and other people with cancer．He wanted to make money for them．So he decided to run across Canada．Terry said he was going to run from Newfoundland in the east to Vancouver in the west．That’s 8,529 kilometers! He asked people to help by giving money．

Terry started running on April l2, 1980．Some days it was cold．Some days it was raining．Some days it was very hot．It was always difficult for Terry to run．But he rail 42 kilometers every day．(4)People all over Canada heard about Terry and started giving money．

After four months, Terry had run 5,373 kilometers．But he was getting sick again．The cancer had come back．Terry had to stop running and go back to the hospital．

Terry Fox died on June 28, 1981．He was only twenty-two years old．He never finished his run across Canada, but he made $24 million to help people with cancer, and everyone in Canada remembers the brave young man with one leg．

任务1：根据短文内容回答下列问题。

1．What was Terry’s new leg made of?

2．Why did Terry decide to run across Canada? （Please answer within lo words．）

任务2：将文中划线的句子翻译成汉语。

3．                                                       

4．                                                      

任务3：What is the main purpose of the passage?

5．