问题
选择题
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
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。