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marjoriee

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          (D)

E. sloth which, found in Puerto Rico in 1991, was dated at 34 million years old, made the sloth the earliest known mammal of

选自prep的一道
注意看红字体

A.过去分词修饰最近名词sloth，错！根据句意，应该修饰fossils
B.that作为定语从句引导词应该没逗号，错！
C.that作为定语从句引导词修饰的是最近的名词sloth，错！
D.correct
E.which作为定语从句引导词应该有逗号，错！

启示：A和D的区别在于有无逗号。
         A没逗号，过去分词修饰就近名词
         D有逗号，过去分词修饰整个名词词组


个人拙见，望各位指错~~~

marjoriee

dingdingding~~不要掉下去哇，满地打滚。。。。。