新课标人教版选修六Book6-Unit4-Reading课件.ppt--(课件中不含音视频)
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- 新课 标人教版 选修 Book6 Unit4 Reading 课件
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1、Reading What is the greenhouse made and used for?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 p
2、lants 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(甲烷甲烷,沼气沼气)and water vapor.What do you think greenhousegases do?They trap heat from the sun and therefor
3、e warm the earth.Main ideas of each partWriting techniques(Paragraph 1)Introduce a debate over the issue of global warming.Raising a questionMain ideas of each partWriting techniques(Paragraphs 2-3)Illustrate how global warming comes about.Giving examples,using graphs,explanation.(Paragraphs 4-5)Lis
4、t two different attitudes among scientists towards global warming.Giving examples,making contrast.(Paragraph 6)Its up to readers to think and decide whether people should do something about global warming or not.Using a question,leaving readers to think over the issue.Read the text carefully and fil
5、l in the blanks.Scientists OpinionJanice Foster We need 1_ like carbon dioxide,methane and water vapour,but if we add huge 2_ extra carbon dioxide to the atmosphere by burning fossil fuels,it will cause the 3_ to go up.gasesquantities ofglobal temperatureScientists OpinionJanice Foster Over the next
6、 100 years the amount of warming could be as low as 1 to 1.5 degrees Celsius,but it could be as high as 5 degrees Celsius.An increase of five degrees would be a 4_ .catastropheScientists OpinionsGeorge Hambley Believes that we shouldnt worry about 5_ of carbon dioxide in the air.Predicts that any wa
7、rming will be mild with few bad environmental 6_ .7_that more carbon dioxide is actually a 8_ thing,which will make life for human beings better.high levels consequencesStatespositiveChoose the best answers.1.Which of the following is TRUE according to the text?A.The temperature of the earth increas
8、ed about one degree Fahrenheit during the 20th century.B.The carbon dioxide content in the air increased by 70 parts per million from 1957 to 1997.C.All scientists accept the data in graph 2 except Charles Keeling.D.Janice Foster says that more carbon dioxide will make plants grow faster.A2.Which of
9、 the following is Dr Janice Fosters opinion?A.The result of the temperature increase will be serious.B.The amount of warming is nothing serious.C.We neednt worry about high levels of carbon dioxide.D.Global warming is a natural phenomenon.AComprehendingComprehending浓度浓度单位单位 Glance quickly at the mag
10、azine article and 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.What are the names of the three scientists mentioned in the article?They are Dr.Janice Foster,Charles Keeling and
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