James老师，问题多多又来了[em96]
这些题目是我在复习时的总结，直接copy过来的，所以你只要看“问题：”部分就好了哦
1. (24465-!-item-!-188;#058&000982)
To meet the rapidly rising market 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
平行：as fast as前后比较对象要一致，suppliers are growing fish主谓结构，后面用they grow
生词：allotment n.分配
问题：用they难道不存在指代不清的问题吗？suppliers or fish ？（我知道根据选最优选项的原则是选D，但是关于“指代”的原则是如何的呢？）
选D | 
