关键词···································································································· 1 3

　　引言 ········································································································ 1 4

　　酸雨 ········································································································ 1 5

　　温室效应及其控制对策 ···································································· 2 6

　　臭氧层空洞的形成及其控制对策 ··················································· 3 7

　　光化学烟雾及其控制对策 ································································ 4 8

　　结语 ········································································································ 6 9