A.Students are not required to attend regular class lectures.B.The professor videotape

外语类 已帮助 人

A.Students are not required to attend regular class lectures.

B.The professor videotapes class lectures for review.

C.Classes are held at various locations throughout the area.

D.Students receive credit for work experience.

热搜:a是b的充分条件,b是a的必要条件吗