prep1-70

顾丘

我觉得这道题，表示”是否“只能用whether,而不能用“if",所以在DE中选择，E比D好，因为，主动优于被动。

Barron1234

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.
(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
句意：现在尚不清楚猩猩是否是唯一具有相互学习能力的动物，亦或其他动物被深入研究的话其实它们也有此种能力。
注意句意“若其他动物被深入研究的话”
E）were studied是虚拟语气：if they(即这些animals) were studied, whether these animals would exhibit similar patterns这件事就会有定论
D）if there were "animals that were studied"-- in the past-- then we would already know the results of those studies, an idea that contradicts the rest of the sentence.