Prep-1-139 求助

wangjianghua

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

(B) On Earth, among the surest indications of sunspot cycles are, it is believed, the rate of tree growth

(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

(E) Among the surest indications on Earth of sunspot cycles is believed to be the rate at which trees grow

答案是E.

句子结构是什么? 不明白.

flamedream

Among the surest indications on Earth of sunspot cycles

subject

A "are" is wrong

B are, it is believed  awkward

C confusion

D no predicate

Miles

primefangs

倒装，地球上，对日斑循环最准确的指示就是树木的生长，如在其年轮上显示的。

wangjianghua

QUOTE:

Among the surest indications on Earth of sunspot cycles is believed to be the rate at which trees grow, as seen in the rings visible in the cross sections of their trunks.

正确顺序是什么呢? 兰色部分介词短语怎么能倒装到句首做主语的感觉?

blueshandys

全倒装，the rate at which trees grow is believed to be Among the surest indications on Earth of sunspot cycles