一道Prep1的语法题

jeffreygjf

In laboratory rats, a low dose of aspirin usually suffices to block production of thromboxane, which is a substance that promotes blood clotting, but not seriously interfering with the production of prostacyclin, which prevents clotting.

(A) which is a substance that promotes blood clotting, but not seriously interfering

(B) a substance that promotes blood clotting, but not seriously interfering

(C) a substance that promotes blood clotting, but does not seriously interfere

(D) which is a substance to promote blood clotting, but does not seriously interfere

(E) which is a substance that promotes blood clotting, but not a serious interference

正确答案是C，为什么D不可以呢？有没有说法：同位语优于定语从句修饰名词阿？

GingerCX

我觉得问题是那个“to promote”吧。这里是叙述一个事实，应该用一般时。而“to”表示一个趋势。

ws_qi

D. but does 更像和which is ...搭配。但是从逻辑含义判断 In laboratory rats, a... aspirin ...block production of ... but not interfering the production of...并列。

同位语优于定语从句，因为定语从句会产生修饰歧义