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 

A


解析:

Air pollution 是抽象名詞這里是泛指，weather 這里是特指全球的氣候，根據(jù)the weather around the world 可知。

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