1、Look at our earth! Period 1 1a-2d Unit 13 Were trying to save the earth. Section A To talk about air pollution, water pollution and sound pollution. To think about ways of protecting the environment. To learn the new words: advantage, scientific Serious pollution We are harming our planet in so many
2、 ways. 伤害 air pollution noise pollution water pollution Factories pour dangerous gases into the air. Air pollution Cars also pour dangerous gases into the air. cars smoking Some people smoke in public places. Noise pollution building houses loud music mobile phones planes Water pollution factories rubbish
