Ask American which city has the worst air pollution and the answer is sure to be Los Ang

问题补充：

Ask American which city has the worst air pollution，and the answer is sure to be Los Angeles.

A. some

B. every

C. any

D. all

答案：

A. some

B. every

(答案→)C. any

D. all

解析：由后句“答案一定是洛杉矶市” 可推知前句意为“若问任何一个美国人哪座城市空气污染最严重”。即美国人对洛杉矶的空气污染之严重达到了妇孺皆知的程度——任何人都知道。