大学体验英语3第一单元教辅.ppt

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1、Return to Menu,LISTEN,TALK,Turn to p.8,and lets listen.,Listen to the following passage about global warming and try to fill the missing words in the blanks.You will hear the passage three times.When the passage is read for the first time,you should listen carefully for its original idea.When the pa

2、ssage is read for the second time,you are required to fill in the blanks with the exact words you have just heard.Finally,when the passage is read for the third time,you should check what you have written.,Global warming may be the most harmful environmental problem 1)_ have created,and the most dif

3、ficult to solve.Our society is largely 2)_ by the fossil fuels that cause global warming.Its growing consequences ecological disruption,floods,droughts,disease are convincing more and more people that we must cut down 3)_ pollution.Many people view global warming as a problem too large and too 4)_ f

4、or anything they can do to 5)_.However,in reality,there are lots of things we can do to stop,or at least to reduce it.,Plant a tree.Trees“6)_”carbon dioxide,but only as long as theyre living.Install low-flow shower heads and faucets.Youll use less than half the water without 7)_.Buy energy-efficient

5、 electronics and appliances.Then,turn them off when theyre not in use.Reduce!Reuse!Recycle!Recycling a stack of newspapers only 8)_ will save a good sized tree.Mount a local 9)_ against global warming.Educate your community about how to cut greenhouse gas pollution.Support measures at the national a

6、nd local levels that increase energy efficiency,and that 10)_ the use of clean,renewable solar and wind technology.,First time,2nd time,Global warming may be the most harmful environmental problem 1)_ have created,and the most difficult to solve.Our society is largely 2)_ by the fossil fuels that ca

7、use global warming.Its growing consequences ecological disruption,floods,droughts,disease are convincing more and more people that we must cut down 3)_ pollution.Many people view global warming as a problem too large and too 4)_ for anything they can do to 5)_.However,in reality,there are lots of th

8、ings we can do to stop,or at least to reduce it.,Plant a tree.Trees“6)_”carbon dioxide,but only as long as theyre living.Install low-flow shower heads and faucets.Youll use less than half the water without 7)_.Buy energy-efficient electronics and appliances.Then,turn them off when theyre not in use.

9、Reduce!Reuse!Recycle!Recycling a stack of newspapers only 8)_ will save a good sized tree.Mount a local 9)_ against global warming.Educate your community about how to cut greenhouse gas pollution.Support measures at the national and local levels that increase energy efficiency,and that 10)_ the use

10、of clean,renewable solar and wind technology.,Second time,3rd time,Global warming may be the most harmful environmental problem 1)_ have created,and the most difficult to solve.Our society is largely 2)_ by the fossil fuels that cause global warming.Its growing consequences ecological disruption,flo

11、ods,droughts,disease are convincing more and more people that we must cut down 3)_ pollution.Many people view global warming as a problem too large and too 4)_ for anything they can do to 5)_.However,in reality,there are lots of things we can do to stop,or at least to reduce it.,Plant a tree.Trees“6

12、)_”carbon dioxide,but only as long as theyre living.Install low-flow shower heads and faucets.Youll use less than half the water without 7)_.Buy energy-efficient electronics and appliances.Then,turn them off when theyre not in use.Reduce!Reuse!Recycle!Recycling a stack of newspapers only 8)_ will sa

13、ve a good sized tree.Mount a local 9)_ against global warming.Educate your community about how to cut greenhouse gas pollution.Support measures at the national and local levels that increase energy efficiency,and that 10)_ the use of clean,renewable solar and wind technology.,Third time,Check up,Glo

14、bal warming may be the most harmful environmental problem 1)_ have created,and the most difficult to solve.Our society is largely 2)_ by the fossil fuels that cause global warming.Its growing consequences ecological disruption,floods,droughts,disease are convincing more and more people that we must

15、cut down 3)_ pollution.Many people view global warming as a problem too large and too 4)_ for anything they can do to 5)_.However,in reality,there are lots of things we can do to stop,or at least to reduce it.,human beings,powered,greenhouse,far away,make a difference,Plant a tree.Trees“6)_”carbon d

16、ioxide,but only as long as theyre living.Install low-flow shower heads and faucets.Youll use less than half the water without 7)_.Buy energy-efficient electronics and appliances.Then,turn them off when theyre not in use.Reduce!Reuse!Recycle!Recycling a stack of newspapers only 8)_ will save a good s

17、ized tree.Mount a local 9)_ against global warming.Educate your community about how to cut greenhouse gas pollution.Support measures at the national and local levels that increase energy efficiency,and that 10)_ the use of clean,renewable solar and wind technology.,breathe in,decreasing performance,

18、four inches high,campaign,encourage,Look at the following pictures and share your worries with your partner about the environment of the earth we live on.,Heated.,Sweating!,Why is the Earth sweating and steaming?Do you want to join the crowd standing by and watching,or to do something to help her?,N

19、ow lets talk.,Look at the following pictures and share your worries with your partner about the environment of the earth we live on.,Mixed Garbage Overflowing,Sorting and Recycling!,How do you dispose of tin cans,plastic bags,and used batteries?Do you know anything about garbage sorting and recyclin

20、g?,Look at the following pictures and share your worries with your partner about the environment of the earth we live on.,Solar Energy Is Clean,So Is Wind!,Do you know any machine or appliance that is powered by solar or wind energy?Can you list any other clean energy technologies?,Task1,Task2,Dialo

21、gue1,Dialogue2,Lin:Is the Earth really getting warmer?John:Yes,theres no doubt about it.Scientists say that four years out of the last ten have been the hottest since records began.Lin:But why does it matter if the Earth gets a little warmer?John:It matters because it changes a lot of things concern

22、ing our life.If the Earth gets hotter,this will cause the level of the sea to rise.Lin:You mean it will cause flooding?John:Yeah,vast areas of the Indian coast,Bangladesh,Holland,and even London,would be under water.To say nothing of beautiful Venice.,Turn to p.10,and lets listen and read.,Dialogue

23、1:The Effects of Global Warming,Lin:Thats terrible!And will there be any other effects?John:Yes,there will be many.The global weather system will change too,causing too much rain in some areas and too little in others.Lin:Can we do something about it?John:Therere a lot we can do.First of all,we must

24、 reduce the amount of pollution coming from industries and cars and stop deforestation.Otherwise,we will suffer from our careless actions.,Dialogue 1:The Effects of Global Warming,Dialogue 2:The Environmentally Informed,Judy:Ah,youre back.Would you like me to run a bath for you?Ming:Oh no.Ill take a

25、 shower.Baths use up too much water.A bath uses up 3 times more water than a shower,you know.Judy:Thats incredible!Ming:Yes,its a fact.And if you like to keep the water running while you brush your teeth,you waste from 25 to 45 liters every time you brush.This way a family of four would fill an Olym

26、pic pool by the time the youngest child reaches 21.Judy:Wow!Here,have a cigarette.,Turn to p.10,and lets listen and read.,Ming:No way!Not only is smoking bad for your health,its the source of social problems in developing countries because,since profit from tobacco is very high,tobacco has taken up

27、the best food-growing areas,leading to food shortages.Judy:So for every cigarette I smoke,someone is starving?Ming:And many tobacco planters use wood to dry tobacco leaves.You know that when you down a tree,youre taking another step on your way to erosion.Judy:And erosion is also the beginning of hu

28、nger.OK,no more cigarettes and only quick showers.,Dialogue 2:The Environmentally Informed,A debate between foreign visitors,who have just come to visit China,and their Chinese friends,college students,about the advantages and disadvantages of building the Three Gorges Dam.,Situation,RoleA,RoleB,The

29、 foreign visitors,believe that building such a large dam will bring about some damages to the ecosystem,hence it will bring more disadvantages than advantages.,A debate between foreign visitors,who have just come to visit China,and their Chinese friends,college students,about the advantages and disa

30、dvantages of building the Three Gorges Dam.,Situation,RoleA,RoleB,Reference,The Chinese students argue that the project will prevent serious flooding and reduce coal burning for electricity,hence it involves more advantages than disadvantages.,A debate between foreign visitors,who have just come to

31、visit China,and their Chinese friends,college students,about the advantages and disadvantages of building the Three Gorges Dam.,Situation,RoleA,RoleB,Reference,A:So,weve heard that there are plans to build a massive dam in the Three Gorges area of the Yangtze.B:Thats right.In fact,theyve already sta

32、rted the preliminary construction.A:But what about the environmental implications?B:What do you mean?A:Well,the damage to the eco-system Isnt it going to mean flooding a great big area,forcing people to re-locate and immersing the sites of special archaeological interest?B:I see what you mean,but th

33、ats what youve read in the Western press and youve only read half of the story.,Task 1,A:Hows that?B:Theres no doubt that the project does have environmental implications but on the whole the benefits outweigh the disadvantages.During the rainy season,the Yangtze often floods and it causes masses of

34、 damage,destroying homes,crops and so on.The dam will prevent this flooding and so,while its true that some people have to move,many people will reap the benefits.Whats more,the dam will provide hydro-electricity to many homes thereby reducing pollution from coal burning power plants.,Task 1,A:What

35、about the fish?B:The fish?A:Arent there some breeds of fish which swim upriver to spawn（产卵）?B:Were talking about saving human lives and livelihoods,and youre worried about the fish!As it goes,Ive heard of other dams where theyve built special little gates or something like that which allow the fish

36、to pass through.A:And Chinas going to lose one of its most famous sites B:Well,not really.Some of the sites will look grander with a higher water level.Why dont you go and see them now while you still have the chance.You can revisit them to make a comparison after the Dam is built.,Task 1,A Chinese

37、student discusses some resource-saving and environmental protection techniques with her host mother in Britain.,Situation,RoleA,RoleB,Suppose youre studying in a university in London and staying with a British family.You do not understand why the host family has the air-conditioning on almost all th

38、e time.,A Chinese student discusses some resource-saving and environmental protection techniques with her host mother in Britain.,Situation,RoleA,RoleB,Reference,Suppose youre British.You think it is necessary to keep a constant temperature in the house,for it makes you and your family more comforta

39、ble.,A Chinese student discusses some resource-saving and environmental protection techniques with her host mother in Britain.,Situation,RoleA,RoleB,Reference,A:You know,Mrs.Brady,Ive been meaning to ask you something B:Yes,dear,whats that?A:Well,why do you always keep the air-conditioning running?B

40、:Why,would you rather swelter in the heat?A:Well,its not that.Its true that sometimes its really hot outside and then Im quite happy not to suffer,but it seems to me that the air-conditioning has become a habit and you keep it on even on the days when it isnt so hot.B:We like to have a constant temp

41、erature in the house,you know.,Task 2,A:But it means theres always an artificial atmosphere,and never any fresh air.Why do you keep it on on cooler days rather than turning it off and opening the windows?You could reduce your power bill by quite a lot too.B:Are you trying to save me money?Am I charg

42、ing you too much rent?A:Oh no,its not that.But we were talking in class the other day about being environmentally conscious and I was thinking that not only is the air conditioning bad for the environment,its bad for our health AND its expensiveB:Well,you may be right.Its just part of our lifestyle,you know.Ill tell you what.Why dont we talk about this with the others over dinner tonight and see what they think?A:OK,Mrs.Brady,that will be interesting.Thank you.,Task 2,The End,