prep一道题

szxissean

Insome species of cricket, the number of chirps per minute used by the male forattracting females rise and fall in accordance with the surroundingtemperature, and they can in fact serve as an approximate thermometer.

(A)for attracting females rise and fall in accordance with the surroundingtemperature, and they can in fact serve

(B)for attracting females rises and falls in accordance with the surroundingtemperature, which can in fact serve

(C)in attracting females rise and fall in accordance with the surroundingtemperature, in fact possibly serving

(D)to attract females rises and falls in accordance with the surroundingtemperature, and it can in fact serve

(E)to attract females rises and falls in accordance with the surroundingtemperature, in fact possibly serving

答案是d,我选的e,我怎么感觉d后面的it变成temperature了？temperature怎么当thermometer

xiqiong

I like D better here. E introduces the word "possibly" which has a different meaning than "it can serve." The "it can" means it is, really, while "possibly" means it might. Not the same thing. And the original sentence uses "can" so I want to preserve the meaning. 　　－－－－－ｍａｎｈａｔｔａｎ
在平行结构中，　同一位置的代词可以优先指代。
并且，ron一直在狠狠的强调， 指代模糊不能作为排除选项的标志！

abc791201064

it  对位指代  并且位置的名词成分

possily 和can是不是重复了？