20xx秋上海教育版英語六年級上冊module 4 unit 10《air》（period 2）ppt課件(文件)
【正文】 call this air pollution. Air pollution is harmful! 1 It’s harmful to the health of people 2 It’s harmful to the nature. 3 Air pollution spreads easily. 4 Air pollution is a global problem. 5 People should stop using coal. Air pollution Air keeps us alive. We get sick if the air is too dirty. What’s the matter with Kitty? It’s the smoke. It’s from cars, buses and the factory. Her eyes hurt. What hurts her eyes? Where is the smoke from? What’s the matter, Kitty? Are you crying? I’m not cryin
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