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recording and lead ss to finish the listening exercises by taking down the key words. 3. Explain the task to the students: Show an example to students : 2. Cultivate ss’ listening ability. 3. Arouse ss’ interest in thinking and 10 Louise talk about? ④ How many factors did Louise mention that cause noise pollution? Present some expressions and sentences. talking. 第三環(huán)節(jié) 表示關(guān)切和擔(dān)憂。 Step3 Speaking Learn the expressions of concern