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标题: GWD13的几个语法题，答案是否有问题？ [打印本页]

作者: smileking 时间: 2004-10-4 18:13
标题: GWD13的几个语法题，答案是否有问题？

Q28:

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.

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

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

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

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

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

为何不选D，却选C？ FOSSILS是复数呀！

A new hair-growing drug is being sold for three times the price, per milligram, as the drug’s maker charges for another product with the same active ingredient.

than

that

of what

at which

为何选D不选C？

作者: LES 时间: 2004-10-4 18:51
http://forum.chasedream.com/dispbbs.asp?boardID=23&ID=56794&page=1

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