Some people fear that air pollution may bring about changes in weather around the world

问题补充：

Some people fear that air pollution may bring about changes in weather around the world.(·江西)

A. /；the

B. the；/

C. an；the

D. the；a

答案：

(答案→)A. /；the

B. the；/

C. an；the

D. the；a

解析：第一个空后的air pollution是不可数名词，而且是泛指，所以不需要填任何冠词；第二个空后的weather被around the world修饰，所以weather前需要加定冠词the。