computerhasbeenprovedtobeimpor

_____ computer has been proved to be _____ important aid in classroom teaching.

A．The; an

B．The; the

C．A; the

D．A; /

登录免费查看答案和解析

相关试题

I’m so surprised that such a clever man as he_________be easily taken in.

A．would

B．should

C．could

D．might

收藏答案/解析

Typhoon Morakot swept across Taiwan on August 8. 2009, _________hundreds of people dead or missing.

A．leaving

B．left

C．to have left

D．having been left

收藏答案/解析

．If I _________too late last night, I could not have fallen asleep in class.

A．didn’t stay up	B．hadn’t stayed up
C．don’t stay up	D．haven’t stayed up

收藏答案/解析

—Could you please lead your car to me this Sunday?
—_________you have it cleaned after using it.

A．Although

B．So long as

C．Even if

D．As soon as

收藏答案/解析

．—We flew to Egypt for the holiday and we all had a wonderful time.
—_________.

A．Oh, that’s very nice of you	B．Congratulations to you
C．Oh, I’m glad to hear that	D．It’s a pleasure

收藏答案/解析