GMAT OG12 语法78题中date的用法？

feiya

OG12 78中date的用法有错误！！

Fossils of the arm of a sloth found in puerto tico in 1991, and dated at 34 million years old, made it the earliest known mammal of the Greater Antilles Islands.(选D)
(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

别的都明白了，就是一个细节，不应该是sth date back....(某物追溯到...时期)吗？为什么正确答案中是sth is dated back呢？date表述追溯的意思的时候应该用主动形式还是被动形式呢？

mid-ocean

这个题我不会，模糊不清

kini

作为追溯讲，是人来date事物的年代的。

bree_noodle

回复 1# feiya


    没见过的未必就是错的   中国的语法不能用来判断GMAT的语法题目

英文所有的动词永远会有新的用法，你总结不完，GMAT的题目来说，永远只能比较选项做题。有可能是5个不好的选项挑比较错的不离谱的，要转换思维。

加油复习：）