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  3. Recently implemented "shift-work equations" based on studies of the human sleep cycle have reduced sickness, sleeping in the job

Recently implemented "shift-work equations" based on studies of the human sleep cycle have reduced sickness, sleeping in the job

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问题 Recently implemented "shift-work equations" based on studies of the human sleep cycle have reduced sickness, sleeping in the job, fatigue among shift workers, and have raised production efficiency in various industries.
选项 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
答案C
解析 由reduced和raise意义上的对比，及这种“减效应(病)”和“增效应(生产效率)”的同时性；决定仅有while raising能满足此表达要求。而A、B、D中and都无法反映“对比”的关系。D中的lowered与前面的reduced构成了“同义重复”。E的was lowered是多余的。
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