A.To test students through computers.B.To store statistics about students.C.To help pr

外语类 专四 已帮助 人

A.To test students through computers.

B.To store statistics about students.

C.To help professors do research work.

D.To aid students in registration.

请帮忙给出正确答案和分析,谢谢!

热搜:a是b的充分条件,b是a的必要条件吗