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题库 / OG2015-SC-134
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.
fatigue among shift workers, and have raised
fatigue among shift workers, and raised
and fatigue among shift workers while raising
lowered fatigue among shift workers, and raised
and fatigue among shift workers was lowered while raising
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C Correct. The use of and in this sentence unites the three parallel elements; the phrase while raising provides a clear contrast with have reduced.
D And is required to link the parallel elements; the verb reduced applies to all three parallel elements, so inserting lowered before fatigue illogically suggests that fatigue actually increased.
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