人教版九年级英语unit13-sectiona.ppt

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If you drink a can of cola. What do you do? I throw away cans. I recycle cans. You throw away the cans. That’s bad for the Earth. You recycle the cans. That’s good for the Earth. 第十六页,共43页。 There are a lot of old newspapers at your home. What do you do? I throw the old newspapers away. I recycle the old newspapers. You waste paper.That’s bad for the Earth. You save paper. That’s good for the Earth.. 第十七页,共43页。 You go shopping. What do you do? I use a lot of new plastic bags. I use my own bag. You use a lot of new plastic bags. That’s bad for the earth. You use your own bag. That’s good for the Earth. 第十八页,共43页。 When you write on a piece of paper, what do you do? I write on one side only. I write on both sides. You use paper on both sides. That’s good for the Earth. You use paper on one sid

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