请教PREP 70

70.  (28271-!-item-!-188;#058&003560)

It is unclear whether chimpanzees are unique among nonhuman species in their ability to learn behaviors from one another, or if, when other animals are studied in as much depth, similar patterns would be found.

(A) if, when other animals are studied in as much depth, similar patterns would be found

(B) if other animals were studied with as much depth they would exhibit similar patterns

(C) would similar patterns be found in other animals if they were studied in as much depth

(D) whether similar patterns would be exhibited in other animals that were studied with as much depth

(E) whether other animals would exhibit similar patterns if they were studied in as much depth

我对答案E有异议，这里的they和未划线部分的their指代不一致啊，为什么对呢？谢谢大家。

同问.我也觉得很奇怪.xdf老师说原文里面不管they,their,them都要指代同一对象。以前也用这个原则做过排除法。可是这道题目就。。。

是老师说得太绝对了么？以后要是碰到这样的题目，是不是不应再考虑指代上的一致性？

Sorry,一个粗心。

lz,在prep语法破解里面，第一道题目就补充说明了指代上的变化。

第二个they 是在第二个whether 从句中，指代该从句中的主语other animals，第一个their refers to 第一个whether从句中的主语chimpanzees。 这两个指代都封闭在两个并列的whether 从句中，不会引起歧义。

所谓的同一个句子里不可以用一个代词指代不同的事务，也是正确的，但是这道题并没有违反这个规定。

还是不明白，顶啊！