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.
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
这里C选项的while是连词吗?看到坛子里一个前辈解答说是连词,后面省略了主语 附链接http://forum.chasedream.com/thread-43926-1-1.html
这个句子先看reduce后面接的是sickness, sleeping on the job, fatigue among shift workers,raised 是另外一个动词了,所以一定是另一个成分。这样reduce修饰的就是sickness, sleeping on the job, fatigue among shift workers这三个东西了,那么fatigue前面就一定要有一个and,这样就可以排除ABD。然后看c和e,e当中的 was lower 是重复的,因为前面已经有reduce了。