An extensive foundation in the basic sciences should be required of all science students

学历类 公共英语 已帮助 人

An extensive foundation in the basic sciences should be required of all science students, ______.

A.whether they are future physicists or chemists.

B.be they future physicists or chemists.

C.they are future physicists or chemists.

D.they should be future physicists or chemists.

热搜:a是b的充分条件,b是a的必要条件吗