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
我的问题是关于C选项:while不是只能是名词或连词吗?作为连词的while,后面接的ing形式真的合适吗?如果合适,请赐教这是哪条语法规则呢?这个ing究竟是noun modifier 还是想表达verb modifier的意思呢?谢谢大家!