问题

There is no doubt________man will continue to explore the vast universe in the future, but the rate at which we approach depends on the development of technology.[ ]

A: whether
B: what
C: when
D: that

正确答案是：

同类题型

.Not only I but also David and Iris______ fond of playing basketball.

Li Ming speaks very good English ____he were an English boy.[ ]

________you study , _________your parents are .

I wish I ________ the meeting.—But you didn’t.

I can’t read these new words, soI have to __________ in the dictionary.