【简答题】Banked close Since the 1940s,southern California has had a reputation for smog。 Things are not as bad as they once were but, according to the American Lung Association, Los Angeles is still the worst ...
【简答题】Since the 1940s, southern California has had a reputation for smog. Things are not as bad as they once were but, according to the American Lung Association, Los Angeles is still the worst city in the ...