人教版高二英语book6 unit4Reading.ppt

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人教版高二英语book6 unit4Reading

Reading A greenhouse is made of glass and is used for growing plants, especially during cold weather. How does it work? The air inside is warm because the glass 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. What are the “greenhouse gases”? In the atmosphere surrounding the earth there are gases, which are called “greenhouse gases”, including carbon dioxide, methane (甲烷, 沼气) and water vapor. What do you think greenhouse gases do? They trap heat from the sun and therefore warm the earth. Answer the questions. Who wrote the magazine article? What is the name of the magazine? Sophie Armstrong wrote the magazine article. The name of the magazine is Earth Care. 2. What are the names of the three scientists mentioned in the article? They are Dr. Janice Foster, Charles Keeling and George Hambley. 3. What do they think about global warming? Do they agree with one another? They don’t agree with each other. 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. Charles Keeling believes it is the burning of more and more fossil fuels that is resulting in a big increase in carbon dioxide. 4. What are the two graphs about? Graph I shows the temperature increase of one degree Fahrenheit between 1860 to 2000. Graph 2 is about the carbon dioxide content in the atmosphere, 1958--1990. 5. What is the main topic of the article? Global warming/ the warming of the earth. 2. Check the statements on page 27 True: 3, 5, 6, 7, 8 False: 1, 2, 4, 9, 10 Correct sentences: 1. The temperature last century increased much. 2. Not everyone believes that global warming is caused by human acti

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