24. 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(C)
>>
(E) and fatigue among shift workers was lowered while raising
这里C答案while之前的平行结构我没有问题,我的疑惑在于,为什么while之后要用raising,while 不是平行了两个动作have reduced和raising吗?
请NN们指点迷津! |