PREP的题，顶了很久都没人回

suppliers are  growing fish twice as fast as( their natural growth rate, cutting their feed allotment) by half and raising them on special diets.

c.growing them natuarally, cutting their feed allotment

d.they grow naturally,cutting their feed allotment

答案是D，我选的C，我觉得C还更对称啊，suppliers are  growing fish twice as fast as （suppliers are）  growing them natuarally ，NN解释一下吧

c有逻辑错误,既然them是指鱼,那鱼自然生长还用的着suppliers来growing吗?

当然是自己长了,所以d比c好

虽然gmat考语法,但是在逻辑面前对称也不那么重要了