1.He had an arm and a leg lost in an accident.
2.Because it was made by the youngest person and the first handicapped person.
3.He walks with the help of a 62,000-yuan man-made leg.
4.He went to the North Pole and the South Pole.
5.Because he wanted to show that nothing is hard,if you put your heart into it.
(答案不唯一)