高中英语 unit 4 reading课件 新人教选修6.ppt

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1、Unit 4Global warming-Does it matter2021/8/11 星期三1预习检测预习检测I.Enjoy translation try to sleep in spite of the noise.Dont get into the habit of smoking.I think his success was due to his healthy life.Have you decided on going to America for further education?2021/8/11 星期三2II.Skim the passage on page 26-2

2、7 tofind the bold(黑体字黑体字)word or phrase that can complete the blanks.1.are opposed to 2.subscribed pared to 4.came about5.states 6.even if7.quantities of 8.kept on9.build up 10.result in2021/8/11 星期三3Fast readingWhat is mainly discussed in the text?A.Carbon dioxide B.Water vapour C.Gases in the atmo

3、sphere D.Temperature increase2021/8/11 星期三4According to the text,which of the following statement is not true？A.Carbon dioxide is a byproduct of the burning of fossil fuelsB.All the scientists agree that the burning of more and more fossil fuels leads to the increase of carbon dioxideC.If we stop ad

4、ding carbon dioxide and other greenhouse gases from now on,the temperature will stop going upD.It is still not clear what the effect of global warming will be.2021/8/11 星期三5George Hambley thinks that more carbon dioxide _A.may lead to a catastropheB.will do good rather than harm to the earthC.will c

5、ause the spread of diseasesD.will encourage a greater range of animals,thus threatening human beings.2021/8/11 星期三6By asking the two questions at the end of the article,the writer implies that _A.we can do nothing about global warmingB.global warming is caused by human beingsC.we should not be too w

6、orried about global warmingD.human beings still have more worries about the effect of global warming2021/8/11 星期三7What will happen if we do nothing about global warming?A.It would cause the sea level to rise,storms,droughts,famines and so onB.The temperature will be surely lowerC.It doesnt matterD.I

7、t has nothing to do with me.2021/8/11 星期三8Deep-reading1.How has the global warming come about?成果展示：成果展示：_ _ _Human activityGreenhouse effect-greenhouse gasesHuge quantities of extra carbon dioxide-from 1957 to 1997-from around 315 parts per million to around 370 parts per million.2021/8/11 星期三92.Wha

8、t are the effects of global warming?成果展示：成果展示：_ _The sea level to rise.Severe storms,droughts,famines,the spread of diseases,and destruction of species.Make plants grow faster.Crops will produce more.Encourage a greater range of animals.2021/8/11 星期三10III.The different ideas between Dr.Janice Foster

9、&George Hambley Dr.Janice FosterGeorge HambleyThe trend would be a _ A _ of several meters in the sea level,or sever storms,_,droughts,famines,the spread of diseases and the _Any warming will be _ with few bad environmental _.More carbon dioxide is actually a _thing,.all of which will make life for

10、human beings better.catastropherisefloodDisappearance of speciesmildconsequencepositive2021/8/11 星期三11 IV.divide the passage into 4 parts and match the main idea of each part.(1)llustrate how global warming comes about(2)List two different attitudes among scientists towards global warming(3)Introduc

11、e a debate over the issue of global warming (4)Its up to readers to think and decide whether people should do sth about global warming or notPart1(para.1)Part2(para.2-5)Part3(para.6)Part4(para.7)2021/8/11 星期三12Wind energy is used as power to produce electricity.Windmills2021/8/11 星期三13where electric

12、ity is produced by burning coals.The coal power stations2021/8/11 星期三14in which oil is refined and made pure.The Oil Refineries2021/8/11 星期三15a facility designed to convert nuclear energy into electricity.A nuclear power plant2021/8/11 星期三16 on the roof of a house on a bright sunny day are used to c

13、ollect solar energy,making your house warm or heating your water.Solar panels2021/8/11 星期三17are used to keep back water and raise its level for irrigation or for producing electricity,etc.The Hydro-electric dams2021/8/11 星期三18How does it work?The glass traps the heat from the sun,making the air warm

14、 so that plants can grow better.2021/8/11 星期三192021/8/11 星期三20Step V Summary The earth is becoming warming and all scientists _ _ the view that the increase in the earths temperature is due to the burning of fossil _.Some _ of this process are called _ gases,the most important one of which is _.We n

15、eed these gases,but the problem begins when we add huge _ extra carbon dioxide into the atmosphere.It means that more heat energy _ to be trapped in the atmosphere causing the global temperature to _.A scientist called Charles Keeling found that the carbon dioxide in the atmosphere went up from arou

16、nd subscribe tofuelsgreenhousebyproductscarbon dioxidequantities oftendsgo up2021/8/11 星期三21315 parts to around 370 parts _ million in 40 years.All scientists accept the date and agree the burning or more and more fossil fuels that has _ this increase.However,the attitude of scientists towards this

17、rise is completely different.On the one hand,Dr.Foster thinks that the _ which increases the temperature by 5 degrees would be a _.On the other hand,George Hambley,who are _ this view,believe that we should not worry about high levels of carbon dioxide in the air.They predict that any warming will be _ with few bad environmental _.But no one really knows the effects of global warming.perresulted in trendcatastropheopposed tomildconsequences2021/8/11 星期三22有效训练有效训练CCBBA BCABB2021/8/11 星期三232021/8/11 星期三24