GWD10-8

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， C错在哪？A 中respiratory system’s capability 看上去不是OG中的典型错误吗？看了以前的贴还是没有答案，请指教！

谢谢先！

那就是说在没有最好的，只能选更好的了？就讲究A了，是吗？

A 中是the respiratory system’s ability to 不是system's capability 是粗心没看清把！

另补：especially here means to particularly great degree. 例如，an especially difficult problem

special 强调different,unusual

specially: is usually used when you do sth that is different from what you usually do for a particular purpose.