21．The story of Christopher Reeve's life is one that is almost impossible to imagine-from a wildly successful Hollywood career，to the horror of life-threatening injury；Reeve experienced both.Thus，not only is he known as a superhero in the Superman films，but he is also regarded as a superhero to many in real life.
He starred in his first school play at the age of eight，and was eventually given the lead role in a Superman film.He starred in four Superman films from 1978 to 1987.His roles in these films had given him the opportunity to be a real-life superman，and he soon gained a reputation for raising awareness for good causes.He worked with organizations such as Save the Children to help those most in need.
Unfortunately，in 1995，a disaster struck Reeve.While horseback riding，he was thrown off his horse and broke his neck.His injuries were so severe that he had no movement or feeling in his body at all and even needed a machine to help him breathe.At first，his doctors did not believe that he would survive.During this time，Reeve felt like he had lost all hope.He wished that he was dead and even thought of ending his own life.He fell into a depression which lasted for many months.It was only due to the ongoing support of his wife，parents and friends that he eventually found the will to live again.For the years that followed he focused his attention on his goal of one day walking again.
With a new sense of energy and commitment，Reeve undertook an intense exercise programme to help him achieve this goal.He engaged in a wide range of exercises designed to rebuild muscle，and made remarkable progress.Shortly after，he managed to return to his film career by directing，producing and even starring in films.He also wrote a biography and returned to his charity work.Reeve became a passionate and energetic advocate for people with back injuries and disabilities，raising millions of dollars in support of medical research. "
What I do is based on powers we all have inside us…and you don't have to be a 'superman' to do it." His positive attitude inspired many people who were stuck in illness.
（1）According to the passage，what experience made Christopher Reeve special？ （no more than 15 words）
（2）Before he got injured，what did Reeve do that made him a superman outside the film？ （no more than 15 words）
（3）What does Para 4 mainly tell us？ （no more than 15 words）
（4）What does the underlined sentence in the last paragraph tell us？（no more than 20 words）
（5）What qualities，do you think，make a superman？Please give your opinion. （no more than 25 words）
