下面是134的语法题,题干原句(错的)如下: 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.
书中的解释是说sickness,sleeping on the job,fatigue并列,我困惑的是reduce 和raise不应该也并列么?并且保持现在完成时??