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.
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Aan especially serious pollutant because it diminishes the respiratory system's ability to deal
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Ban especially serious pollutant because of diminishing the respiratory system's capability of dealing
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Can especially serious pollutant because it diminishes the capability of the respiratory system in dealing
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Da specially serious pollutant because it diminishes the capability of the respiratory system to deal
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Ea specially serious pollutant because of diminishing the respiratory system's ability to deal
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正确答案: A