满分5 > 高中英语试题 >

To those scientists, it still remains to...

To those scientists, it still remains to be a question ______ man can go back to the old days with time machine.

A.if

B.that

C.how

D.whether

  

D 【解析】略
复制答案
考点分析:
相关试题推荐

There is a common belief among them _______ rubbish can and should be put into good use.

A.which

B.if

C.whether

D.that

  

查看答案

We never doubt ______ our school team will win the match against No. 3 Middle School.

A.whether

B.that

C.if

D.what

  

查看答案

The teacher usually grades the students on _______ they have behaved.

A.that

B.what

C.which

D.how

  

查看答案

Once _____, it won’t be easily forgotten.

A.saw

B.seeing

C.seen

D.see

  

查看答案

On stepping into the office, the girl was frightened to find that the whole office was filled with ______ looked like tiny worms.

A.that

B.something

C.what

D.anything

  

查看答案
试题属性

Copyright @ 2008-2019 满分5 学习网 ManFen5.COM. All Rights Reserved.