本贴相关题目 OG-2015-SC-134OG-2015-SC-134
OG-13-SC-134
OG-12-SC-134
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Recently implemented "shift-work equations" based on studies of the human sleep cycle have reduced sickness, sleeping on the job, fatigue among shift workers, and have raised production efficiency in various industries.

Afatigue among shift workers, and have raised
Bfatigue among shift workers, and raised
Cand fatigue among shift workers while raising
Dlowered fatigue among shift workers, and raised
Eand fatigue among shift workers was lowered while raising

正确答案: C

OG中While作连词的用法

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Abby2015

电梯直达

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发表于 2016-3-8 21:30:58 | 只看该作者回帖奖励

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Recently implemented “shift-work equations” based on studies of the
human 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, and raised

(C) and fatigue among shift workers while raising

(D) lowered fatigue among shift workers, and raised

(E) and fatigue among shift workers was lowered while raising

OA is C 我的问题是C中while作为并列连词和have reduced表示一个对比的关系，那么while 后面raising为什么是ing形式呢？