题目

Some people fear that ________ air pollution may bring about changes in _______ weather around the world.A. /; the       B. the; /       C. an; the        D. the; a      答案：   A   解析：本题考查冠词用法。Air pollution 是抽象名词这里是泛指，weather 这里是特指全球的气候，根据the weather around the world 可知。

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