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and also

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楼主
发表于 2008-9-6 22:19:00 | 只看该作者

and also

Studying the fruit fly, a household nuisance but a time-honored experimental
            
subject, has enabled the secrets of how embryos develop to begin to be
            
unraveled by scientists.

A.      Studying the fruit fly, a household nuisance but a time-honored experimental
        
subject, has enabled the secrets of how embryos develop to begin to be unraveled by scientists.

B.       By the study of the fruit fly, a household nuisance and also a time-honored experimental subject, it was possible for the secrets of how
        
embryos develop to begin to be unraveled by scientists.

C.      By studying a household nuisance but a time-honored experimental subject, the fruit fly enabled scientists to begin to unravel the secrets of how
        
embryos develop.

D.      By studying the fruit fly, a household nuisance and also a time-honored
        
experimental subject, the secrets of how embryos develop are beginning to be unraveled by scientists.

E.       The study of the fruit fly, a household nuisance but a time-honored experimental subject, has enabled scientists to begin to unravel the secrets of how embryos develop.

错选了A,and also可以这样用?

答案是d

沙发
发表于 2008-9-7 11:55:00 | 只看该作者
。。。。觉得答案是E的说。。。
板凳
发表于 2008-9-7 13:03:00 | 只看该作者

我觉得是E

   D , by studying 的逻辑主语是, a household nuisance 不通...

     

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