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选修unitGlobal warming-readingppt课件.ppt

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    • 1、Unit4 Global Warming The Earth Is Becoming Warmer But Does It Matter 1 Work in groups list things as required 1 Things that consume energy around us or at any other places 2 Sources of energy Warming up I m 2 Things that use energy In a house 3 Things that use energySources of energy lights television cassette player computer fridge stove washing machine hairdryer video recorder coal oil natural gas wind power sun solar energy water hydro electric power the sea tidal energy uranium nuclear energ

      2、y plant biomass energy 4 Windmills renewable What Renewable Warming up P 25 5 What Renewable A coal power station non renewable 6 What Renewable An oil refinery 精炼厂 non renewable 7 What Renewable A nuclear power station non renewable 8 solar panels renewable What Renewable 9 What Renewable A hydro electric dam renewable 10 Geothermal 地热的 Energy Plant 11 What is the greenhouse made of and used for What is this 12 The sun 13 Greenhouse 14 15 How does it work The air inside is warm because the glas

      3、s traps the heat from the sun and keeps it from escaping This makes the greenhouse heat up and so the plants can grow throughout the cold period 16 Questions What is greenhouse effect 17 green house effect 18 Carbon dioxide 19 The leading gasses are Carbon dioxide Methane Ozone O3 Nitrous Oxide N2O Which greenhouse gases do you know 20 As the earth is becoming warmer there are many disasters 21 tsunami The rise of the sea level 22 floods snow disaster famines the spread of diseases 23 droughts 2

      4、4 Listen to the tape and find out the main idea of the passage Reading 25 Part 1 Paragraphs 1 Part 2 Paragraphs 2 5 Part 3 Paragraphs6 Introduce a debate over the issue of global warming Describe how global warming comes about List two different attitudes among scientists towards global warming 26 Part 4 Pa 7 It s up to readers to think and decide whether people should do something about global warming or not 27 Choices 1 Who found out the amount of carbon dioxide in the atmosphere from 1957 to

      5、1977 A Dr Janice Foster B Charles Keeling C George Hambley D Sophie Armstrong B Reading IV 3m 28 2 The author probably agrees that A actually global warming is good for mankind B we should do nothing about the global warming C catastrophes will happen if the globe keeps on warming D a lot remains to be found out about the effects of global warming D 29 What can we do about global warming 30 Homework A B What can we do about global warming Comprehending P 27 1 2 31 此课件下载可自行编辑修改 供参考 感谢您的支持 我们努力做得更好 32

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