看了as vs like一文内的OG题后有几题不懂

猫猫鱼鱼

看了题了，有几道不懂想请教

4. In the 1980's the rate of increase of the minority population of the united states was nearly twice as fast as the 1970's.
A.twice as fast as
B.twice as fast as it was in
C.twice what it was in
D.two times faster than that of
E.two times greater than

C是答案。C比B优越在哪？

5. In its most recent approach, the comet Crommelin passed the Earth at about the same distance and in about the same position, some 25 degrees above the horizon, that Halley’s comet will pass the next time it appears.
(A) that Halley’s comet will pass
(B) that Halley’s comet is to be passing
(C) as Halley’s comet
(D) as will Halley’s comet
(E) as Halley’s comet will do

这一题为什么选D？选一个倒装的选项？

8. The use of gravity waves, which do not interact with matter in the way electromagnetic waves do, hopefully will enable astronomers to study the actual formation of black holes and neutron stars.
A) in the way electromagnetic waves do, hopefully will enable
B) in the way electromagnetic waves do, will, it is hoped, enable
C) like electromagnetic waves, hopefully will enable
D) like electromagnetic waves, would enable, hopefully
E) such as electromagnetic waves do, will, it is hoped, enable

为什么选B？我觉得A和C都比B好~

12. There are hopeful signs that we are shifting away from our heavy reliance on fossil fuels; more than ten times as much energy is generated through wind power now than it was in 1990.

A. generated through wind power now than it was
B. generated through wind power now as it was
C. generated through wind power now as was the case
D. now generated through wind power as it was
E. now generated through wind power than was the case

答案是C C中be the case的用法我见过几次 但不知道它和一般的be区别在哪？

因为是AIR同学的帖子，如果能得到他本人的解释就更好了。

AIR的蓬蓬裙

HI!! 谢谢你这么认真的读贴，也算我没白发。

第一个问题中，我觉得关键在于what。其实楼主做这20个题的时候错了10多个，第一眼也是选的B，但是你仔细想想，rate 和 it is 是不能并列的。所以what it is 好一点。

其他几道题我得说实话，我不是很理解答案的。。。因为不是我亲自整理，而是从国外网站上直接扒过来，所以我真不好说是怎么个事情。。。

真的太对不起了。

fdrandom

第5题：倒不倒装都可以，C选项没有补will，E选项的do多余，还是D选项更好点

fdrandom

第8题，xdf给的解释是hopefully主观表达，错了。感觉说法有点牵强，这题出处哪里，答案靠谱么？

猫猫鱼鱼

第8题，xdf给的解释是hopefully主观表达，错了。感觉说法有点牵强，这题出处哪里，答案靠谱么？

-- by 会员 fdrandom (2011/9/7 14:53:08)

这套题和答案都是Air（即一楼）提供的，我也不太清楚。。。

猫猫鱼鱼

HI!! 谢谢你这么认真的读贴，也算我没白发。

第一个问题中，我觉得关键在于what。其实楼主做这20个题的时候错了10多个，第一眼也是选的B，但是你仔细想想，rate 和 it is 是不能并列的。所以what it is 好一点。

其他几道题我得说实话，我不是很理解答案的。。。因为不是我亲自整理，而是从国外网站上直接扒过来，所以我真不好说是怎么个事情。。。

真的太对不起了。

-- by 会员 AIR的蓬蓬裙 (2011/9/7 14:36:07)

不管怎么说还是谢谢你