标题: 求各位牛人指教一道语法，很急，谢谢 [打印本页] 作者: iamdurant 时间: 2011-6-12 23:07 标题: 求各位牛人指教一道语法，很急，谢谢 Sulfur dioxide, a major contributior to acid rain, is an especially serious pullutan 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 diminished the capability of the respiratory system to deal E. a specially serious pollutant becuase of diminishing the respiratory system's ability to deal