主语和谓语之间可以用一个逗号隔开吗，以OG 15 SC 81为例

大胡

OG 15 SC 81

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

正确答案是D

我想问的是

A选项  fossils(主语)+modifier, made（谓语）   

和C选项     fossils（主语）+modifier，was dated（谓语）

这两个选项中主语和谓语都用一个逗号隔开，这种句子结构在GMAT中是被允许的吗

谢谢谢谢

大胡

upupup顶一下

rockorange

后面那个只是修饰成分，没有影响的
我倒是比较好奇那个 D的found是修饰sloth还是fossils