GWD10 37 没问过的

ConnieC · 发表于 2010-10-14 23:58:33

GWD-10-Q37:GWD-11-26
On Earth, among the surest indications of sunspot cycles are believed to be the rate that trees grow, as seen in the rings visible in the cross sections of their trunks.

A.On Earth, among the surest indications of sunspot cycles are believed to be the rate that trees grow（既然是只有一个indication那么谓语动词就应该用is 而不是are）

B.On Earth, among the surest indications of sunspot cycles are, it is believed, the rate of tree growth（it is believed是多余的内容）

C.On Earth, the rate at which trees grow is believed to be among the surest indications of sunspot cycles？？

D.Among the surest indications on Earth of sunspot cycles, believed to be the tree growth rate（句子不完整）

E.Among the surest indications on Earth of sunspot cycles is believed to be the rate at which trees grow
我选C，答案是E 想不通为什么C不可以。后面的as又是怎么修饰的，做什么成分？
而且总觉得among...后面有跟个系表结构怪怪的，这是什么结构从来没看见过？求解释

GWD10 37 没问过的

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