[SC悬赏令] SC题目！【XDF书里的题囧】求解答啊！！

各位大神求解答！！

新手实在是。。。

这次问题有点多，虽然还是一样的chun

1. Since the 1930’s aircraft manufacturershave tried to build airplanes with frictionless wings, shaped so smoothlyand perfectly that the air passing over them would not become turbulent.

(A) wings, shaped so smoothly and perfectly

(B) wings, wings so smooth and so perfectlyshaped

(C) wings that are shaped so smooth andperfect

(D) wings, shaped in such a smooth andperfect manner

(E) wings, wings having been shapedsmoothly and perfectly so

选了D ，正解是B。

为什么D不对呢？

如果说是因为smooth和perfectly shaped是并列修饰wings，那么我要是再做一遍这题，估计还是看不出来……

2.When rates were raised in 1985, postalservice officials predicted they would make further rate increasesunnecessary for at least three years.

(A) they would make further rate increasesunnecessary

(B) they would mean that further rateincreases would not be needed

(C) that it would not be necessary forfurther rate increases

(D) that the increase would make furtherrate increases unnecessary（D）

(E) further rate increases will not beneeded

答案是D, 我选了A

因为看到D里面有好多increase就直接放弃了，感觉太过冗余。

还有一点就是，我记得XDF说过，宾语从句要加that, 那么我可以接受CD。是有这样的说法吗？

3.According to his own account,Frederic-Auguste Bartholdi, the sculptor of the Statue of Liberty, modeled theface of the statue like his mother’s and the body like his wife’s.

(A) modeled the face of the statue like hismother’s and the body like his wife’s

(B) modeled the face of the statue afterthat of his mother and the body after that of his wife

(C) modeled the face of the statue like hismother and the body like his wife

(D) made the face of the statue after hismother and the body after his wife

(E) made the face of the statue look likehis mother and the body look like his wife

正解是B，我选了E。

感觉A也是对的，为什么不能用like呢？

4.A huge flying reptile that died out withthe dinosaurs some 65 million years ago, the Quetzalcoatlus had a wingspan of36 feet, believed to be the largest flying creature the world has ever seen.

(A) believed to be

(B) and that is believed to be

(C) and it is believed to have been

(D) which was, it is believed,

(E) which is believed to be

正解C,我选B

why not B??!?!!!

何必要用have been 呢？？

5、The guidingprinciples of the tax plan released by the Treasury Department could have evena greater significance for the economy than the particulars of the plan.

(A) even a greater significance for theeconomy than

(B) a significance that is even greater forthe economy than

(C) even greater significance for theeconomy than have

(D) even greater significance for theeconomy than do

(E) a significance even greater for theeconomy than have

正解D,我选了E

现在知道E，significance 不可数。

疑问在于选项最后，补助动词的时候，主句中是could have …这种情况算是哪一类啊？为什么用do?

也就是than后面到底是没有助动词，还是加do,或者是have。首先than后面如果有助动词的话，必然是事情和事情的比较，也就是句子间的比较，如果没有助动词就是than前后名词的比较。Do 和have的取舍在于前面的时态，如果前面是一般时态就用do的形式，如果前面是完成时就用have的形式。

这里很显然是事情和事情的比较（principles 和particulars各自have significance的比较）所以需要助动词，因为前面是一般时态，所以用do,选择D

另外，significance是不可数名词。”）