PREP 96 答案中的it 能否省略？为什么？

zsy020584

PREP 96  答案中的it 能否省略？为什么？ 以下是正确的选项句子。同一个主语为什么还要有个it呢？能不能省略
In some species of cricket，the number of chirps per minute used by the male to attract females rises and falls inaccordance with the surrounding temperature, and it can in fact serve as an approximate thermometer。

zsy020584

顶一下~~~~

zsy020584

求NN解答.....

Gail小M

for gmat sc, always select the BEST answer.

repeating the subject is redundant, but still can be right.

zsy020584

for gmat sc, always select the BEST answer.

repeating the subject is redundant, but still can be right.

-- by 会员 Gail小M (2011/4/11 11:43:39)

that makes sense, thx!