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标题: PREP有一道难题不解？ [打印本页]

作者: bosfashion 时间: 2008-6-29 01:44
标题: PREP有一道难题不解？

Although the turtle has been toothless for more than 150 million years, in some contemporary turtle species the moderately sharp and jagged edges of their horny jaws fuction for teeth.

A. their horny jaws function for teeth

B. its horny jaws function for teeth

C. its horny jaws function as do teeth

D. the horny jaws function as teeth do

E. the horny jaws function as teeth

正确答案是E，我不明白，请高人帮我讲一讲，谢谢了

作者: AlienX 时间: 2008-6-29 01:52
X functions as Y. 是一個固定撘配.
如果發貼時能在topic上加上題號, 會比較方便別人找貼...

作者: christinawu 时间: 2008-6-29 10:30

作者: judyenglish 时间: 2009-9-28 23:09
ding

作者: 斯巴达 时间: 2009-9-29 10:05

A. their horny jaws function for teeth

B. its horny jaws function for teeth

C. its horny jaws function as do teeth

D. the horny jaws function as teeth do

E. the horny jaws function as teeth

首先从排除A，应该用单数，其次是horny jaws 扮演牙的功能。FUCTION是动词去除C/D AS这里是作为牙，所以BE中选E

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