新视野英语视听说教程3答案 Unit7.docx

新视野英语视听说教程3答案 Unit7.docx

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新视野英语视听说教程3答案Unit7

Unit7

Coolit,man.Thisspraydoesn’tcontainCFCs.Andyou’dbetterreadalittlemore.In2003theholeintheozonelayershrankby20percent,sothere’snoreasontopanic.Q:

Whatdoesthemanmean?

Keys:

1.B2.D3.A4.A5.CIII.ListeningInTask1:

Weshouldhaveproperrespectfornature!

ScriptMartha:

Doyouthinkmostpeopleinyourculturerespectnature?

Ed:

Ithinkso.Umm…morenowthanbefore.Martha:

Whatdoyouthinkisthemostseriousenvironmentproblemintheworldtoday?

Ed:

Today…Ithinkdamagetotheozonelayerisabigproblem;andanotherproblemispollutioninbigcitiesandthingslikethat.Martha:

Howdoyoulearnaboutenvironmentalproblems?

Ed:

Umm…throughschool.Alotofclubspromoteenvironmentalsafely,andsomeTVprograms,too.Theytalkaboutenvironmentalsafelyandstufflikethat.Martha:

Doyouthinkstudentsshouldlearnmoreabouttheenvironmentatschool?

Ed:

Ithinkso.So,astheygrowolder,theycanbemoreawareofalltheproblemsthataregoingon.Andalsotopreventmoreproblemsfromoccurring.Martha:

Ifyoucouldcreateanewlawtohelptheenvironment,whatwoulditbe?

Ed:

Anewlawfortheenvironment?

Umm…I’dprobablysaythatwhenpeoplethrowawaytheircigarettebutts,theyhavetothrowthemintothegarbagebin,notjustthrowthemeverywherebecauseit’sjustlitteringandIhatethat.Sotheyshouldbefinediftheythrowthemonthefloorontheground.Martha:

That’sagoodidea.Whatdoyoupersonallydotohelpprotecttheenvironment?

Ed:

I’msoagainstlittering.Ineverlitter.IfIseesomebodylitter,Igetreallyangry.SoIalwaysthrowmytrashintothegarbagebin.WhilebeinginterviewedbyMartha,Edsaidmorepeopleinhisculturerespectnatureeverbefore.Whenaskedaboutthemostseriousenvironmentalproblemintheworldtoday,hementionedthedamagedozonelayerandthepollutioninbigcities.Edlearnedaboutenvironmentalproblematschool.AlotofclubsandsomeTVprogramspromoteenvironmentalsafely.Hebelievesthatstudentsshouldlearnmoreabouttheenvironmentatschool.Thentheycanbemoreawareofalltheproblemsandpreventmoreproblemsfromoccurring.Whenaskedaboutanewlawhewouldliketocreatetohelptheenvironment,hesaidthatwhenpeoplethrowawaytheircigarettebutts,theyhavetothrowtheminthegarbagebin.Theyshouldbefinediftheythrowthemonthefloor.Personally,Edissosetagainstlitteringthatheneverlitters.Healwaysthrowshistrashintothegarbagebin.Task2:

AWorkQualificationTestScriptAccordingtoareportbyAustralianresearchers,theholeintheozonelayeroverAntarcticawillprobablystartclosingwithinfiveyears.Theysayitmaybecompletelyclosedwithinfiftyyears.TheozonelayerprotectstheEarthfromdangerousradiationfromthesun.TheholeintheozonelayerwasdiscoveredoverAntarcticaalmostthirtyyearsago.Atthetime,itwasthreetimesthesizeofAustralia.Thereportfoundthatozone-destroyinggasesintheupperatmospherewereatorneartheirhighestlevelsintheyear2000.Butsincethen,therehasbeecontinuousprogressmadetowardtherecoveryoftheozonelayer.Satelliteinformationshowedthatlevelsofozone-destroyinggasesintheatmosphereareslowlydecreasing.Atitslargestthisyear,theozoneholecoveredmorethan15millionsquarekilometers.Thatisdownfromayearlyaverageof23millionsquarekilometersoverthelastsixyears.Chlorofluorocarbons,orCFCs,areresponsiblefordestroyingpartoftheozonelayeroverAntarctica.CFCshavebeenwidelyusedsincethe1930sincoolingdevicessuchasrefrigeratorsandairconditioners.CFCsremainintheatmosphereforyears.Governmentscientistsaythelevelofchlorineintheatmosphereisdecreasingbecauseofrestrictionsontheuseofchlorofluorocarbons.ThechemicalswererestrictedunderaninternationalagreementcalledtheMontrealProtocolin1987.UndertheProtocol,developingcountriespromotedtocuttheiruseofchlorofluorocarbonsinhalfbytheyear2005.Theyalsoagreedtoaneighty-fivepercentcutbytheyear2oo7.Keys:

FTTFTForReferenceItwasthreetimesthesizeofAustralia.TheypromisedtocuttheiruseofCFCsinthehalfby2005andagreedtoan85percentcutby2007.Task3:

AMildEINinoScriptTheEINinoweatherconditionhasreturned.However,officialattheUnitedStatesNationalWeatherServicesayEINinoisweakerthanusualthisyear.EINinoisachangeintheatmosphereoverthePacificOcean.Ithappenseveryfourorfiveyears.Normally,watertemperaturesinthewesternPacificOceanincreaseneartheendoftheyear.ThiscausemorerainfallinIndonesia,Australiaandothernearbyplace.Atthesametime,coldoceanwatercauselessrainfallintheeasternPacificOcean,nearSouthAmerica.TheoppositehappensduringEINino.PacificOceantemperaturesincreasenearSouthAmerica,causingunusuallyhighamountsofrainfallthere.Incontrast,EINinocausesdryweatherinIndonesiaandAustralia.AstrongEINinocanseverelyaffecttheweatherallovertheworld.ThelastpowerfulEINinowasin1997and1998.Itcausedmajorfloodsinmanyplaces.EINinoalsoledtoextremelydryweatherinsomeotherareas.Reportssaytheweathercausedthedeathsofabout24,000people.SoexpertssayhavingaweakerEINinothisyearisgoodnews.MeteorologistssayrainfallhasbeenhigherthanusualinSouthAmerica.TheexpertssaytheeffectsofEINinowillbegintoshowinNovemberintheUnitedStates.Thenorthernstatesmayhaveawarmerwinter.But,scientistssayEINinowillnotbestrongenoughtopreventthisyear’spowerfulstormsintheAtlanticOcean.Accordingtothepassage,howoftendoesEINinohappen?

WhatnormallyhappensinthewesternPacificOcean?

WhatdidtheEINinoin1997and1998cause?

WhatisNOTmentionedasaresultofthisyear’sEINino?

Whatisthecentralideaofthepassage?

Kes:

1C2.A3.D4.B5.CForReferencePacificOceantemperaturesincreasenearSouthAmerica,causingunusuallyhighlevelofrainfallthere.DryweatherresultsinAustralia.IV.SpeakingOutMODEL1OurglobeisindangerJohn:

HowisyourGrandmagettingalongduringthisusuallyhotweather?

Nora:

Overthelastfewyears,Grannyhasbeencomplainingthatthehot,humidweatheriskillingher.Shebelievestheweatherhaschanged.John:

Whatshemeansistheclimate’slong-termconditions;weatherrefersonlytoday-to-dayconditions.Nora:

Yeah,shesayssummerishotter,andwinterwetter.ButItriedtocomforther,saying,“It’sallinyourmind,Granny.”John:

She’sright,youknow.Thegreenhouseeffectdoesbringglobalwarmingandrain.Nora:

HowcanIexplainglobalwarmingandgreenhousegasestoa97-year-oldGranny?

John:

Tellhertheearthnowislikearealgreenhousemadeofglasspanelsthatletinlightandtrapheat.Nora:

Thinkshe’llwanttoknowthatcarbonmonoxidefromearthmakesgreenhousegases?

John:

Everybodyshouldknowwhatcauseglobalwarming;otherwisewewon’tstopit.Nora:

I’lltellGrannynottoburnanymorewoodorcoal,ortousesprayonthehair.John:

OK,jokeaboutit,butitwon’tbesofunnywhenthepolaricecapsmeltandoceansrise.NowYourTurnSAMPLEDIALOGA:

Howareyougettingalongduringthisusuallyhotweather?

B:

Notwellatall.Overthelastfewweeksthehot,humidweatheriskillingme.Ibelievetheclimatehaschanged.A:

Yeah,thesummerishotter,andwinterwetter.B:

Doyouknowwhyallthishashappened?

A:

Thegreenhouseeffectsbringglobalwarmingandrain.B:

Whatdoyoumeanbygreenhouseeffects?

A:

Theearthisnowlikearealgreenhousemadeofglasspanelsthatletlightinandtrapheat.Youknow,carbonmonoxidefromearthisagreenhousegas.B:

Isee.Everybodyshouldknowwhatcauseglobalwarming;otherwisewewon’tstopit.A:

Theimportantthingisthathumanbeingsshouldtakestepstoreduceglobalwarming.B:

Whatcanwedothen?

Perhapsweshouldnotburnanymorewoodorcoal.A:

Right.AlsoweshouldtrytoproducelessCFCsorFreon.B:

Howcanweachievethat?

A:

Don’tuseaerosolsprayonyourhair,anddependlessonair-conditionersandrefrigerators..B:

Butit’shardtogiveupallthis.A:

Butwemusttakeactionbeforepolaricecapsmeltandoceansrise.MODEL2Rainforestswillsoonbeonlyamemory.ScriptSusan:

Hey,Chris,thereisanenvironmentalgrouponcampusaskingfordonationstosavetherainforests.Chris:

Sowhat?

Susan:

Sowhat?

!

Don’tyouwanttosavetherainforests?

Chris:

Butthere’renorainforestsinourcountry.Theyneedhot,tropicalclimates.Susan:

Comeon.Arainforestisanyforestwhereheavyrainfallleadstodensevegetation.Tropicalrainforestscanbefoundinhoe,tropicalareas,buttherearealsocoolrainforests,includingoneinsoutheastAlaska.Chris:

Howdidyouknowthat?

Susan:

Well,I’vejustreadabookonrainforests.Youknow,140nillionpeopleliveintheworld’srainforests,and35percentoftheworld’splantandanimalspeciesexistonlyinrainforests.Chris:

Wow,I’mimpressed.Sowhatelsehaveyoulearned?

Susan:

Mostoftheworld’srainforestsareindangerofdestructionbyloggers,farmersanddevelopers.Theyaredisappearingatarateof1000acresaminute!

Chris:

It’sterrible!

Susan:

Yeah,we’vegottofindawaytosavethem.Nowwouldyouliketogiveadonation?

Chris:

Sure.NowYourTurnSAMPLEDIALOGA:

Mostoftheworld’srainforestsareindangerofdestructionbyloggers,farmersanddevelopers.Theyaredisappearingatarateof100acresaminute!

B:

Whatatragedy!

Manyoftheworld’splantandanimalspeciesexistonlyinrainforests.A:

Wereallyneedtosavethebeautifulforests.B:

Yeah,we’vegottofindawaytosavethem.A:

Doyouknowourmayorismakingacalltoplanttrees?

B:

Yeah,wedohavetoplantmoretrees.IhearChinadoesn’thavealotofforestscom