GWD-8-Q34

rockytundra

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.

 

1. sloth found in Puerto Rico in 1991, and dated at 34 million years old, made it the earliest known mammal of

2. 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

3. sloth that was found in Puerto Rico in 1991, was dated at 34 million years old, making this the earliest known mammal of

4. sloth, found in Puerto Rico in 1991, have been dated at 34 million years old, making the sloth the earliest known mammal on

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

答案是C。但是，明显主谓不一致阿。正确答案为什么不是D呢？

jasoncz1

D对的.

easy4meeeeee

题目意思是

a sloth(单数) 的 fossils(复数)的发现, 让这只sloth成为最早的哺乳动物

化石不能成为哺乳动物

我也做错了这道题

之所以用this, 就是要让句子意思更加明确-------this就是指代前面提到的那只sloth

如果把后面变成 the earlist fossils of mammal on the earth, 那就D最爽了

[此贴子已经被作者于2007-7-23 15:01:46编辑过]

wzsgdtc

那这题为什么不选E呢？为什么无端端的，忽然用完成时。。。。

AlienX

答案是D
which只能用做非限制修飾, E的which前面沒有comma, 所以錯
Something has been dated at X years old=一個東東巳被鑑定為X years old
用完成時態沒什不好

像风一样离去

我也可以选到D，根据fossils是复数可以排除ABCE，但是我不明白D为何要用完成时。