OG 81求帮助 。。。。。。。。。

yanjie0112

OG13 81 fossils of ths 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, makingthe 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答案解释说 it makes no sense to say that the fossils made it the earliest known mammal. 是什么意思啊  化石使得sloth是最早 动物 不可以么

richtung

不可以，是发现化石且确定年代使得的。
而且it指代不清，不知道是arm还是sloth，正确选项特地重复了the sloth来避免歧义。

yanjie0112

richtung 发表于 2014-8-23 14:44
不可以，是发现化石且确定年代使得的。
而且it指代不清，不知道是arm还是sloth，正确选项特地重复了the slo ...

亲 谢谢你的回答 我想问一下 你是怎么判断代词指代不清的  代词指代有什么规则么 我觉得 自己学的有点混乱 我判断代词指代问题的时候 一直都是靠读句子 觉得别扭的时候 才觉得是代词指代的错