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1、核心要点回扣.重点单词1tend_vi.趋向，易于，照顾vt.照顾，护理tendency n. 倾向，偏好2oppose vt.反对；反抗opposed adj.反对的，对立的3consequence n结果；后果；影响consequent_adj.随之发生的；作为结果的consequently_adv.所以，因而4state vt.陈述；说明statement n陈述，说明5contribute v捐献；促成；投稿contribution n贡献.重点短语1come2.3.4.5.重点句式1There_is_no_doubt_that(毫无疑问)the earth is becoming w
2、armer(see Graph 1)and that it is human activity that has caused this global warming rather than a random but natural phenomenon.2Even_if_we_start_reducing(即使我们开始减少)the amount of carbon dioxide and other greenhouse gases，the climate is going to keep on warming for decades or centuries.3It is OK to le
3、ave an electrical appliance on so_long_as_youre_using_it(只要你在用)if not，turn it off!4It_takes_a_lot_of_energy_to_make_things_from_new_materials(用新材料来做这些东西要耗费大量的能源)，so, if you can，buy things made from recycled materials.回顾话题用本单元的词汇或句式完成下列写作任务即使我们每天都说着要保护环境，但是仍有很多人在乱扔垃圾。总的来说，我不能容忍这种行为。我代表爱护环境的朋友们说：只要我们守
4、规矩，我们就可以创造出一个美丽的环境。我们的努力会起作用的。_【参考范文】Many people keep on throwing rubbish everywhere even if we call on everyone to protect the environment every day.On the whole I cant put up with the behavior of this kind.On behalf of those who take good care of the environment，I would like to say as long as we can behave ourselves，we can create a beautiful environment.Our efforts will make a difference.2