请教OG 12 78的所有指代

fyf19871214

OG12-78代词指代

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
此题选D。
但是我一直有困惑：对于从句的that/which指代和代词的it/those指代，如果碰到了A of B的情况下到底是指代谁～
比如B 选项的，Fossils of the arm of a sloth, that .....中的that是指代fossils还是是sloth，还是都可能？
我由此还想到的 A of B blabla...., so it....那么it是指代A还是B，还是both are ok?
每次做题，碰到类似的总觉得心里发虚，谁知道能告诉一下，先谢谢啦。

sylivayjer

我对 78 纠结的是， making 的主语是
fossils
还是Fossils of the arm of a sloth found in Puetro Rico in 1991, have

been dated at the 34 millions years old 这个句子。
ETS， 似乎很讨厌整句做主语，但是没有证据？谁知道

pfullsomer

关于 A of B, 我也迷糊了半天。
看了一些例子后，我觉得 ETS 更喜欢 which 指代A。78是一个例子，74也是一个例子。

winny0821

余以为应该是就近指代%……

legnawen

which不是应该就近指代吗

supermanlee

偶然中看到了这个……

B sloth, that they found in Puerto Rico in 1991, has 这里应该是插入语中的非限制性定于从句，不应该用that而用which，which可以指fossils 也可以指 sloth；A of B blabla...., so it.it 应该看具体情况的指代。

fyf19871214

有道理～
但是B是错误选项，有可能就是错在这句中的that错误指代了fossils，对不？所以想搞明白，.....A of B, that...的形式中有没有明确的rule说，that就是只能指代哪一个。
同理想知道A of B blabla...., so it....

with二

这题中that应该是fossils，因为found到的是fossils而不是sloth？

但是个人觉得，也许B有一个错误就是因为that指代不明~