一道GWD的题~While和at the same time能同时用？

zhtybhg · 发表于 2012-1-16 22:44:25

Industrialization and modern methods of insectcontrol have improved the standard of living around the globe while at thesame time they have introduced some 100,000 dangerous chemical pollutants,having gone virtually unregulated since they were developed more than 50years ago.
A. whileat the same time they have introduced some 100,000 dangerous chemicalpollutants, having
B. whileat the same time introducing some 100,000 dangerous chemical pollutants thathave
C. whilethey have introduced some 100,000 dangerous chemical pollutants at the sametime, which have
D. butintroducing some 100,000 dangerous chemical pollutants at the same time thathave
E. butat the same time introducing some 100,000 dangerous chemical pollutant, having

答案选B~我选D~
求解~

zhangyupeng120 · 发表于 2012-1-16 22:59:01

这题是07prep的97题，我的看法是因为but要引起平行对称，但是D项的but平行不能成立，所以D项错，而楼主你选了D说明你明白having和that have的区别，我就不赘述了。最后我认为平行是大语法点必须满足，而while和at the same time只是小点，必须先满足大语法点才可以。这是我的看法，希望能给你带来帮助。

zhtybhg · 发表于 2012-1-16 23:10:03

这题是07prep的97题，我的看法是因为but要引起平行对称，但是D项的but平行不能成立，所以D项错，而楼主你选了D说明你明白having和that have的区别，我就不赘述了。最后我认为平行是大语法点必须满足，而while和at the same time只是小点，必须先满足大语法点才可以。这是我的看法，希望能给你带来帮助。

-- by 会员 zhangyupeng120 (2012/1/16 22:59:01)

嗯嗯~~谢了~~这么详细~~07prep97...汗了~

一道GWD的题~While和at the same time能同时用？

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