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考研
A new technique______, the yields as a whole increased by 20 percent.
A new technique______, the yields as a whole increased by 20 percent.
admin
2013-03-25
20
问题
A new technique______, the yields as a whole increased by 20 percent.
选项
A、working out
B、having worked out
C、having been worked out
D、to have been worked out
答案
C
解析
根据句子结构,我们可以看出这里应使用独立分词结构,故D错误。由于动词work out和a new technique是逻辑动宾关系,故此处只能使用过去分词的独立结构或使用被动语态的现在分词独立结构,例如:Machines having been used,people do more workwith less energy.由于使用了机器,人们就能用较少的力气,干较多的工作。
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0
考研英语一
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