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1、Unit 4 Global WarmingWe depend on energy to do many things in our daily lives.For example,energy lights ourcities and heats our buildings.Make a list of things that use energy in your home,in your school,or any other places you can think of.6 students a group.TVFridgeWashing machineThings depending
2、energy in our everyday lifeAir conditionerMicrowave ovenWhere does all this energy come from?Make another list of as many resourcesAs you can.Wind energyCoal energyOil energyNuclear energySolar energyhydropowerAn energy source is“renewable”when supplies Of it never run out and“non-renewable”when One
3、 day they will run out.Which energy source on you list are renewable and which are non-renewable?renewableNon-renewablerenewablerenewablerenewablerenewablerenewableNon-renewableNon-renewablerenewablegreenhouseWhy the greenhouse can make the plants grow?IntheatmospheresurroundingtheIntheatmospheresur
4、roundingtheearththerearegasescalled“green-earththerearegasescalled“green-housegases”.Whatdoyouthinkhousegases”.Whatdoyouthinkgreenhousegasesdo?greenhousegasesdo?ReadingThe Earth Is Becoming WarmerThe Earth Is Becoming Warmer -But does It Matter?-But does It Matter?ReadingReading 1Read the passage qu
5、ickly and answer the following questions.1.Whowrotethemagazinearticle?Whatisthe1.Whowrotethemagazinearticle?Whatisthenameofthemagazine?nameofthemagazine?2.Whatarethenamesofthreescientists2.Whatarethenamesofthreescientistsmentionedinthearticle?mentionedinthearticle?3.Whatdotheythinkaboutglobalwarming
6、?3.Whatdotheythinkaboutglobalwarming?Dotheyagreewithoneanother?Dotheyagreewithoneanother?4.Whatarethetwographsabout?4.Whatarethetwographsabout?1.Whowrotethemagazinearticle?Whatisthe1.Whowrotethemagazinearticle?Whatisthenameofthemagazine?nameofthemagazine?Sophie Armstrong.Earth Care.2.Whatarethenames
7、ofthreescientists2.Whatarethenamesofthreescientistsmentionedinthearticle?mentionedinthearticle?Dr.Janice Foster,Charles Keeling,George Hambley.3.Whatdotheythinkaboutglobalwarming?3.Whatdotheythinkaboutglobalwarming?Dotheyagreewithoneanother?Dotheyagreewithoneanother?There are some very different att
8、itudes among scientists towards this issue.Some think the effects will be terrible,while some others Believe that we should not worry about it.4.Whatarethetwographsabout?4.Whatarethetwographsabout?The first graph shows the temperature increase of one degree Fahrenheit between 1860 to 2000.The second
9、 graph shows the Carbon dioxide content in the atmosphere from 1957 to 1997.ReadingReading 2Read the passage carefully and judge whether the statements are true or false?1.Thetemperatureinthelastcenturydidntseemto1.Thetemperatureinthelastcenturydidntseemtoincreasetoomuch.()increasetoomuch.()2.Everyo
10、nebelievesthatglobalwarmingiscausedby2.Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.()theactivitiesofhumans.()3.JaniceFosterbelievesthatshecanmeasurethefuture3.JaniceFosterbelievesthatshecanmeasurethefutureglobalriseintemperature.()globalriseintemperature.()4.Theriseincarbondioxi
11、deiscausingasteadyincreasein4.Theriseincarbondioxideiscausingasteadyincreaseinglobalwarming.()globalwarming.()5.Itisclearwhattheeffectsofglobalwarmingwillbe.()5.Itisclearwhattheeffectsofglobalwarmingwillbe.()TTTFFRead the passage again and make the best choices.1.Who found out the amount of carbon d
12、ioxide in the atmosphere from 1957 to 1977?A.Dr.Janice Foster.B.Charles Keeling.C.George Hambley.D.Sophie Armstrong.ReadingReading 32.The author probably agrees that _A.actually global warming is good for man.B.we should do nothing about the global warming.C.catastrophes will happen if the globe keeps on warming.D.a lot remains to be found out about the effects of global warming.WhatelseshouldwedotoreducetheWhatelseshouldwedotoreducetheamountofcarbondioxide?amountofcarbondioxide?Homework:1.Recite the new words and expressions of this part.2.Complete Exercise 1 and 2 on page 31.