【正文】
Unit 13 We’re trying to save the earth 第一課時 (Section A) 情境引入 Leadingin Look at the following pictures noise pollution air pollution water pollution Roleplay the following conversation and make your own conversations about the kinds of pollution above. A: The river was dirty. Even the bottom of the river is full of rubbish. B: But it used to be so clean. A: Yes, but people are littering in the river. B: Everyone in the town should play a part in cleaning it up. 活動探究 Fastreading Now turn to page 99 and read the page