96.  

In some species of cricket, the number of chirps per minute used by the male for attracting females rise and fall in accordance with the surrounding temperature, and they can in fact serve as an approximate thermometer.
(A) for attracting females rise and fall in accordance with the surrounding temperature, and they can in fact serve
(B) for attracting females rises and falls in accordance with the surrounding temperature, which can in fact serve
(C) in attracting females rise and fall in accordance with the surrounding temperature, in fact possibly serving
(D) to attract females rises and falls in accordance with the surrounding temperature, and it can in fact serve
(E) to attract females rises and falls in accordance with the surrounding temperature, in fact possibly serving

 it 指 the number of chirps，但是你说的也没错，外国论坛也是认为it有指代不清问题。
就如楼上说的：原本意思是说 it can实际能做到，而E改成有可能

大家好像对prep的题讨论没啥兴趣，要知道考试的题目很接近prep,个人感觉prep是OG的升级版，而GWD有时候会误导一些规则的使用，用俗话说就是路子有点野。再顶!!!

我觉得文法上应该是没错
我给你的国外连结

The "it can" means it is, really, while "possibly" means it might.
重点可能是在这个字can跟possibly
因为can可以表达「能力」或是「可能」，此题是前者。

还是it的指代问题 如果指代number, 那么就是the number.....,and the number...

我们平时说 it helps me and encourages her.  而不说It helps me ,and it encourages her.

这个地方既然两个分句都是一样的主语 为什么要重复呢？

求助