大全601＝OG233

hougang

233. 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

请问这题应该怎么样解决？谢谢

[此贴子已经被作者于2004-11-14 10:30:40编辑过]

LES

大全601＝OG233=Section 10-24

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