题目内容：
The author holds that graduate student is a safe and familiar form for young people because（）.
A.it can help the young people to lead a better life.
B.it is a provisional form for the young people to prove themselves competent in society and intensely aware of being on trial as well.
C.it is the familiar school life for the young people.
D.the young people can learn more knowledge to prepare for their future job.
参考答案：