78. Fossils of the arm of a sloth found in Puerto Rico in 1991, and dated at 34 million years old, made it the earliest known mammal of the Greater Antilles Islands. (A) sloth found in Puerto Rico in 1991, and dated at 34 million years old, made it the earliest known mammal of (B) sloth, that they found in Puerto Rico in 1991, has been dated at 34 million years old, thus making it the earliest mammal known on (C) sloth that was found in Puerto Rico in 1991, was dated at 34 million years old, making this the earliest known mammal of (D) sloth, found in Puerto Rico in 1991, have been dated at 34 million years old, making the sloth the earliest known mammal on (E) sloth which, found in Puerto Rico in 1991, was dated at 34 million years old, made the sloth the earliest known mammal of A 怎么错了? 答案B 但为什么是HAS?fossils是复数啊,应该是have吧
再把E选项还原一遍,我们可以得到:
Fossils of the arm of a sloth which, found in Puerto Rico in 1991, was dated at 34 million years old, made the sloth the earliest known mammal of the Greater Antilles Islands.
按照Manhattan 中对which用法的说明:
Use WHICH only to refer to the nounimmediately preceding it—never to refer to an entire clause.
那么这里which修饰的就是sloth..
所以我感觉有时候OG里面对答案的解释也是有问题的...
比如这个选项里面,去掉两个逗号之间的found就是:
Fossils of the arm of a sloth which was dated at 34 million years old, made the sloth the earliest known mammal of the Greater Antilles Islands.
那么这个结构就是有问题的,但是OG并没有这么解释...