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As its sales of computer products have surpassed those of measuring instruments , the company has become increasingly willing to compete for the mass market sales they would in the past have conceded to rivals.

C that in the past would have been conceded previously to rivals

D it previously would have conceded to rivals in the past

答案

C INCORRECT.

   the passive-voice construction in this context is weak and ambiguous

D INCORRECT

   the placement of in the past makes it unclear whether it is supposed to modify rivals or would have conceded; if the latter , then it is redundant.

牛牛们帮帮忙,这两个选项答案不理解.或给出自己的解释也可

 恩.这个我懂了.但是我不懂的是og 中的解释

C选项是market sales that in the past would have been conceded previously to rivals  定从是修饰market sales 的    market sales in the past would have been conceded previously to rivals    OG的意思是说用被动语态表达is weak and ambiguous   这题的意思用主动语态表达更直接明确

D选项it previously would have conceded to rivals in the past

in the past可能修饰rival 也可能修饰conceded 修饰对象不明确    

而且如果修饰的是conceded的话 和 previously就重复了   因为previously也是修饰conceded的 

这是我对OG的理解  希望有帮助  昨天刚看过  仅供参考吧