GMATprep-40

哪位帮忙解答一下：为什么C不对？我觉得从平行的角度来说，C更平行啊？（正确答案说是D）

40. To meet the rising marketing demand for fish and seafood, suppliers are growing fish twice as fast as their natural growth rate, cutting their feed allotment by nearly half and raising them on special diets.

A. their natural growth rate, cutting their feed allotment

B. their natural growth rate, their feed allotment cut

C. growing them naturally, cutting their feed allotment

D. they grow naturally, cutting their feed allotment

E. they grow naturally, with their feed allotment cut

自己再加一点：growing them naturally 和 they grow naturally 虽然汉语意思不一样，但是如果选C的意思，逻辑上我觉得也没有什么错吧？

我也做错了这题,但经过思考,我的理解是:

as...as 是要求平行的,在本题中:

as...as 是大平行,其前面的suppliers are growing fish是句子,所以其后必须以句子对称,保持平行;

后面 and 连接的是小平行,用分词表伴随状态(通过cutting their feed allotment 和raising them on special diets两个方式达成让鱼加倍成长的结果 );所以 D正确

为什么不选A呢，觉得as。。。as后不一定要接句子。

比如我们是不是可以说，The car is running as fast as 50 miles an hour.

如果抛开their的指代的歧义不说。