prep07 一道题

Sundercover

有道题虽然能做对，但是对其中it的用法有点疑惑，希望各位NN帮忙解答：

When drafting the Declaration of Sentiments that was adopted at the Seneca Falls Women's Rights Convention in 1848, included in it by the author, Elizabeth Cady Stanton, was a call for female enfranchisement.

(A) When drafting the Declaration of Sentiments that was adopted at the Seneca Falls Women's Rights Convention in 1848, included in it by the author, Elizabeth Cady Stanton, was a call for female enfranchisement.

(B) Including a call for female enfranchisement, a draft of the Declaration of Sentiments was adopted at the Seneca Falls Women's Rights Convention in 1848 that Elizabeth Cady Stanton wrote.

(C) When the Declaration of Sentiments drafted by Elizabeth Cady Stanton was adopted at the Seneca Falls Women's Convention in 1848, a call for female enfranchisement had been included in it.

(D) A call for female enfranchisement, included in Elizabeth Cady Stanton's draft of the Declaration of Sentiments in 1848, that was adopted by the Seneca Falls Women's Rights Convention.

(E) When Elizabeth Cady Stanton drafted the Declaration of Sentiments that was adopted at the Seneca Falls Women's Rights Convention in 1848, she included in it a call for female enfranchisement.

prep语法笔记中说C项的it指代不清，而E的很明确指的是Declaration of Sentiments。。。这里很想不通，个人看来两个it用的没有什么大的区别啊！！

求助求助，各位好人

shaoheng1120

C的问题我认为是主要是主从均用被动，没有主动好。it有指代call 的嫌疑。

ss-fleur

感谢分享！