Documents Unit 13 We are trying to save the earth. serious pollution We are harming our planet in so many...

Slide 1 Slide 2 Unit 13 We are trying to save the earth. Slide 3 serious pollution We are harming our planet in so many ways. 伤害 air pollution noise pollution water pollution…

Documents Unit 13 We are trying to save the earth.. Language Goal Talk about pollution and envirnmental...

Unit 13 We are trying to save the earth. Language Goal Talk about pollution and envirnmental protection To talk about air pollution, water pollution and sound pollution.…