In 2003，Yang Liwei became the first Chinese astronaut in space.Since then，another 17 astronauts have reached the stars.Do you dream of being an astronaut？How did they do it？
    In space，changes in the environment and loneliness test the minds and bodies of astronauts.So the training for astronauts is very hard." Astronauts take over 200 different training subjects before going to space，" Huang Weifen，chief designer of the astronaut system for China's manned space project，told CCTV News.These include science and mental health' classes.
    The most tring one is underwater training.Astronauts stay under the water in clothes heavier than 100 kilograms for six hours at a time.The heavy clothes make every move hard."An astronaut once said he lost two kilograms after one underwater exercise，" said Huang.
    Each astronaut does training for at least three and a half years before getting the chance to go to space.
    This year，China is finding new people to be the fourth group of astronauts.The first and second groups of Chinese astronauts were all from the Chinese People's Liberation Army AirForce.However，in the third group，civilians（平民） could also become astronauts.They are experts and they can do science studies in space.They don't need to have "perfect" bodies like pilot astronauts.

（1）What do we know about Yang Liwei from Paragraph 1？

A

A

A.He was the first Chinese astronaut to go into space.
B.He went into space with 17 astronauts in 2003.
C.He helped many people become astronauts.
D.He dreamed about going to space again.
（2）What does Huang Weifen say about the training for astronauts？

D

D

A.It changes from time to time.
B.Most of the subjects are not hard.
C.Many of the subjects take place in space.
D.It has more than 200 different subjects.
（3）What do we know about astronauts from Paragraph 2？

B

B

A.They are teaching each other in different classes.
B.They may face mental health problems in space.
C.Each astronaut learns a different subject.
D.They have to go to space after finishing the training.
（4）What is the passage mainly about？

D

D

A.Who can become an astronaut？
B.How do astronauts live in space？
C.Why did China send astronauts into space？
D.What kind of training do astronauts need to do？