134. Recently implemented “shift-work equations” based on studies of thehuman sleep cycle have reduced sickness, sleeping on the job, fatigue among shift workers, and have raised production efficiency in various industries.
(A) fatigue among shift workers, and have raised
(B) fatigue among shift workers, andraised
[url=](C)and fatigue among shift workers while raising[/url] (D) lowered fatigue among shift workers, and raised
(E) and fatigue amongshift workers was lowered while raising
求问D 选项，og 的解释说“ illogically suggest fatigue actually increase . og是把lowered当成过去式而不是完成时。那么如果想表达完成时的并列就必须 have done , have done , and have done 吗 ？ have就不能省略吗
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发表于 2017-10-31 09:46:37
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