求助大全676（Prep243)关于不定式的问题

airyun

676.        Sulfur dioxide, a major contributor to acid rain, is an especially serious pollutant because it diminishes the respiratory system’s ability to deal with all other pollutants.
(A) an especially serious pollutant because it diminishes the respiratory system’s ability to deal
(B) an especially serious pollutant because of diminishing the respiratory system’s capability of dealing
(C) an especially serious pollutant because it diminishes the capability of the respiratory system in dealing
(D) a specially serious pollutant because it diminishes the capability of the respiratory system to deal
(E) a specially serious pollutant because of diminishing the respiratory system’s ability to deal
答案是A
这道题做了两遍吧，第一遍的时候选对了，但是第二遍是复习了一阵子又遇到的，这时候就多想了，感觉上to do不定式对逻辑主语并没有特别明确的要求，所以这个A选项里的to do是不是会引起“it diminishes...."的目的是为了”deal with..."的歧义呢？。。。虽然从逻辑上看是不可能啦，但是我觉得从语法上看会这样，尤其如果放在主语可以作为to do的逻辑主语的句子当中，这种歧义也可以被接受吗？
如能赐教不吝感激啊！

airyun

up up up up

airyun

继续up...没有人吗。。。

airyun

。。。。。。继续顶。。。