请教 Prep 40，后天考了，请大家帮忙！！

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

答案D

我的问题是：D的they没有指代问题么？
我觉得they指代suppliers，因为suppliers在as fast as 前后都做主语。
如果这样子的话那D就有歧义 － 是suppliers grow fish naturally 还是suppliers自己grow?

所以觉得they指代不清

被prep里的题搞得都快没信心了

请NN帮忙看看，小妹不甚感激～！！！

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.

请时刻注意未划线部分。。。

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

答案是D. 但我认为应该是C.

C明明平行对称：suppliers are  growing fish twice as fast as growing them naturally - 何错之有？怎么可能是D??

我刚才做的时候也选了C，想法和mm一样，这会觉得C和D的区别应该主要看意思。

C suppliers 养鱼的速度是suppliers自然地养鱼的速度的2倍

D suppliers 养鱼的速度是鱼自然地生长的速度的2倍

应该是D的意思更合理一些

MM对比下逻辑意思吧

我一开始也选C

但是必须考虑句子意思啊