题目内容

Nowadays scientists are working hard to find out ______ to do with air pollution.
A．howB．whyC．whenD．what
D

试题分析：句意：现在科学家们正在努力找出做什么可以解决空气污染问题。how 怎么； why为什么； when何时； what什么。所以选D。
练习册系列答案
相关题目
---Can you come on Monday or Tuesday, Scott?  
---I’m afraid_____ possible. I’ll be on business on those two days.
A．eitherB．neitherC．everyD．each
- I hope to see Niagara Falls one day. What about going there?
- Niagara Falls would be beautiful, but there is not much to do there.
A．sometimes B．in the day
C．a day D．some day
—Why do people  there _______use umbrella in the sun ?
---Because they would rather  enjoy the sunshine .
A. hardly        B. often           C. always 
If my frirends have any problems, my door is ______ open to them.
A．neverB．seldomC．sometimesD．always
We need to come up with an _____________ and make a decision at once.
A．wayB．ideaC．newsD．solution
–Of all the skirts, the red one looks as ______ as the others.
--I think so. And it’s _______ than the others.
A．beautifully, quite cheaper.B．beautiful, much cheaper.
C．beautifully, more cheapD．beautiful, much more cheaper.
―What do you want to be in the future, John?
― I want to be _____ fashion designer. It is ______ interesting job.
A．a; theB．a; /C．a; anD．an; the
—Have you heard of the good fireman, Quan Zhanrong?
—Yes, he thought of others ______ than himself.
A．lessB．fewerC．bestD．more

违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com

精英家教网