prep sc两道比较问题

50. (27159-!-item-!-188;#058&003134)

Many teenagers undergo stress, but results of a recent study indicate that the patterns of stress that

girls experience are more likely to result in depression than are those that boys experience.

(A) are those that boys experience

(B) what boys experience

(C) boys' experience would

(D) boys' stress patterns do

(E) stress patterns of boys

college-educated women and women living in the South and West to be significantly more likely to

be using supplemental hormones as women living in the Northeast and Midwest.

(A) college-educated women and women living in the South and West to be significantly more likely

to be using supplemental hormones as women living

(B) college-educated women and women living in the South and West as significantly more likely to

use supplemental hormones than if they are living

(C) college-educated women and those living in the South and West being significantly more likely

to use supplemental hormones than if they lived

(D) that college-educated women and women who live in the South and West are significantly more

likely to be using supplemental hormones as were women that lived

(E) that college-educated women and women living in the South and West are significantly more

likely to use supplemental hormones than women living

两道主语比较问题，我想问下：既然第一题those that boys experience要补出助动词are，避免产生歧义（歧义变成 result in  those that boys experience），那为什么第二个题women living in the Northeast and Midwest不补出 are呢？？这里也会有 more likely to use women living in the Northeast and Midwest的歧义呀？！

我知道第二个题其它肯定不对，是想问下这个are没补肯定会产生歧义了，难道第二题是有效性错误？其实应该补但是没有更好的才没补么？？？？

快考试了，希望能有人看到解答下，谢谢啦

恩恩，谢谢mm的回答……

这点我想到了，但是后来纠结于既然这里要加"to use"来表示那个意思，那为何第一句就不可以说 "to result in" 不能省，所以没歧义，可以省掉 "are"呢？？？  就是 “平行结构than后面是不能省to use 的”这句的依据是什么呢？？  谢谢帮忙解答下哈