问题

He has made another wonderful discovery,___ of great importance to science.

A:who I think it
B:which I think it is
C:that I think is
D:which I think is

正确答案是：

同类题型

What kind of movies does Maria___________—She__________ comedies. likes…like C

When did you come back—Half an hour ago. You ____ to music.

I don’t believe Jim is able to design a digital camera, ______?[ ]

he manager of the factory wants to improve production a great deal, but he doesn’t spend much on technology.—I am afraid he won’t realize his dream. You know ________.

They are teachers and don’t realize ______to start and run a company. [ ]