Unit4GlobalWarming-reading3课件(人教版选修6).ppt

Unit4GlobalWarming-reading3课件(人教版选修6).ppt

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Unit 4;energy sources;① What are they? ② What are these buildings made of? ;_____ the heat from the sun;In the atmosphere surrounding the earth there are gases, which are called “greenhouse gases”.;carbon dioxide;What do you think greenhouse gases do?;The earth is becoming warmer - ;Fast Reading;Skimming;3.What is mainly discussed in the passage? A. What has caused the global warming and whether it matters. B. What effects of the global warming will be. C. How serious the global warming could be. D. What the global warming is.;Part 1. Part II Part III ;Part 1.(para1) raise a question Part II Para2. who is to blame for the earth’s Becoming warmer? ; Para 3 How do human affect the earth warming up? ;Para 4. the levels of carbon dioxide have increased greatly over the last 100 to 150 years;Tip: You can know somebody’s opinion through understanding his or what he said. ;Dr. Janice Foster thinks the effects of global warming could be very serious. George Hambley thinks global warming will be mild with few bad environmental consequences. ;Does global warming matter?;cause the sea level to rise severe storms floods droughts famines the spread of diseases disappearance of species;cause the sea level to rise severe storms floods droughts famines the spread of diseases disappearance of species;Idea-sharing;Assignment ;Thank You !

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