课题：Unit 4 Global warming Lesson 7 (extensive reading) 【三维目标】1.Improve students’s ability to get the mian idea and useful information from reading passage. 2.Process and method:Group work,Task-based teachng. 3.Emotion attitude and value:To develop students’ sense of cooperation with the help of group work. 【课前预习】设计意图：训练学生阅读和提取关键信息的能力。 Environmental problems are becoming more and more serious all over the world. For example, cars have made the air unhealthy for people to breathe and poisonous gas is given off by factories. Trees on the hills have been cut down and waste water is being poured continuously into rivers. Furthermore, wherever we go today, we can find rubbish carelessly disposed. ?? There are different kinds of pollutants, each of which comes from different sources. It is necessary to identify the source of pollution, in order to make a policy to eliminate them. ?? Different products, processes and activities of our industrialized world together form the major source of pollution. The forms of pollution can be mainly divided into three kinds—solid, liquid and gas. ?? These pollutions have greatly damaged our planet and continue to do so. In fact, pollution is threatening our existence. The whole ecological balance of the earth is changing. Massive destruction of environment has brought about negative effects and even posed a great threat to man’s existence. ?? We must face the situation that exists and take action to solve our environmental problems. For instance, new laws must be passed to place strict control over industrial pollution, the public must receive the education about the danger of pollution and so on. ?? The earth is our home and we have the duty to take care of it for ourselves and our later generation. Fortunately, more and more people have realized these problems. Measures have been taken to deal with these situations by the government. Laws have been passed to stop pollution, I hope the problems will be solved in the near future and our home will become better and better. 1. How many examples of environmental problems are given in the first paragraph? A. 2 ??????????????????????????? B. 3 ?????????????????? C. 4 ???????????????????????????? D. 5 2. Which of the following is TRUE according to the passage? A. In all there are three kinds of pollution B. If people continue to pollute our planet, there will be no trees. C. Industrial pollution has been completely controlled. D. Laws have been passed to stop pollution and protect our environment. 3. The writer’s attitude towards the future of the earth is _____. A. despair ???????????????? B. negative ????? ???C. optimistic ???????????????? D. hopeless 【课堂演练】设计意图：进一步提升学生阅读和提取关键信息的能力。 You might think that “global warming” means nothing more than a rise in the world’s temperature. But, rising sea levels caused by it have resulted in the first evacuation(撤离) of an island nation—the citizens of Tuval ... ...
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