Question

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

Answer 1

A  

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。