【求助】新prep-1-242,请NN帮助......

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

我在选择的时候，在A和C之间徘徊了很久，最后还是选错了，请问C错在什么地方？

请NN回答，谢谢！

请问LZ为什么觉得A错了？

读起来ability to do比capability of sth顺很多，而且我也不确定capability of sth后面是要跟in doing。

好像XDF就讲前者比后者好，但是要看选项的，如果有个选项是be able to的话，可能就是be able to比较好了，当然是在语义通的前提下。

我就是觉得A和C貌似都正确的样子，所以就随便选了一个...