本贴相关题目 GMATPrep-2008E2-SC-234 | TN-02-SC-28 (DYBD)

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The coyote is one of several recent ecological success stories: along with the white-tailed deer, the moose, and other species that are enlarging their natural domains, they have established themselves as supreme adapters in an era when the capability to adjust to the environmental changes wrought by human beings has created a whole new class of dominant large mammals.

Athey have established themselves as supreme adapters in an era when the capability
Bthey have established themselves as being supreme adapters in an era when being able
Cit has established itself as a supreme adapter in an era when to be able
Dit has established itself as being a supreme adapter in an era when its ability
Eit has established itself as a supreme adapter in an era when the ability

正确答案: E

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发表于 2011-8-9 19:15:09 | 只看该作者回帖奖励

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The coyote is one of several recent ecological success stories:along with the white-tailed deer, the moose, and other species that are enlarging their natural domains, they have established themselves as supreme adapters in an era when the capability to adjust to the environmental changes wrought by human beings has created a whole new class of dominant large mammals.

A.they have established themselves as supreme adapters in an era when the capability

B.they have established themselves as being supreme adapters in an era when being able

C.it has established itself as a supreme adapter in an era when to be able

D.it has established itself as being a supreme adapter in an era when its ability

E.it has established itself as a supreme adapter in an era when the ability

答案E
C和E的区别在于when后面。解析说E更简洁。我的疑问是，名词比不定式简洁？我觉得差不多啊。。