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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. 括号中是划线部分
A) Fatigue among shift workers, and have raised b) Fatigue among shift workers, and raised C) and fatigue among shift workers while raising
为什么选C, 不选A ? |
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