英语听力教程-第三册-答案.docx
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英语听力教程-第三册-答案.docx
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Unit1 IstheEarthBeingSqueezedDry?
TrainingFocus
Developingtheskillofoutliningisamajortrainingfocusforthisunit.Anditwillremainatrainingfocusformanyotherunitsinthisbook.
Thecontentofthisunitcentersaroundsomeenvironmentalissuesincludingglobalwarming,deforestation,watershortageandsoon.Thelisteningmaterialsaremainlyintheformsofinterviewsandreports.
Pleasefocusonthespeaker’slineofthoughtwhilelistening.Youmayhaveaquicklookattheoutlinesintheexercisesbeforehandsoastoobtainsomecuesaboutwhattocome,wheretopinpointtheanswers,andhowtoorganizetheinformation.Youshouldalsopayattentiontothespecialvalueofsomekeywordsintheoutlines,suchasproblems,effectsandactions.Thesekeywordshelpsingleoutandgroupthemostimportantpiecesofinformationintheutterances.
PartI
ExerciseB
Listentotwoshortextractions.Writedowntheenvironmentalissuesmentionedinthem.
1.burningoftheforests/treeremoval(deforestation)/reductionoftheworld’srainforests
2.globalwarming/greenhouseeffect/emissionsofCO2
PartII
ExerciseA
Listentothefirstpartofaninterview.Notedownthekeywordsinthenotescolumn.Thenanswerthequestions.
Key:
1.Morepeople morefirewood fewertrees
Moredomesticanimal moreplants feweravailableplantsmoredesert movesouth desertexpandingsouth nograss
2.Growingcropsstabilizesoil,withoutthemthetopsoiljustblowsaway.Butifthereisn’tenoughrainthecropsdon’tgrow.
3.Peopletrytogrowfoodtosupportthemselvesorthecreaterancheswherecattlecanberaised,ortogethardwoodforexport,ortomakewayforanironoremine.
ExerciseB
Listentoamoreauthenticversionofthefirstpartoftheinterview.Completetheoutline.
Outline(I)
I.Environmentalproblemsindifferentcontinents
A.Africa
1.SaharaDesertexpansion
2.nograssforanimalstoeat(EastAfrica)
B.NorthAmerica&mostofEurope
1.situation— intensivefarming/agriculture
2.potentialproblem—topsoilblowingaway
C.SouthAmerica,CentralAfrica&SouthernAsia
1.problem—tropicalforestsdestruction
2.consequences
a.soil thin unproductive wasteland
b.animal/plantspeciesbecomingextinct
c.climatechangeforthewholeworld
PartIII
ExerciseA
Listentothesecondinterview.Notedownthekeywordsinthenotescolumn.Thenanswerthequestions.
1.Treeswouldholdrainfallintheirroots.Whenforestsinthehigherup-riverhavebeendestroyed,alltherainthatfallsinthemonsoonseasonflowsstraightintotheriverandstartstheflooding.
2.Heimpliesthatsomenationalgovernmentsjustconsidertheresultsoftheirpoliciesinthenearfuture,orjustthinkasfaraheadasthenextelection.
ExerciseB
Listentoamoreauthenticversionofthesecondinterview.Completetheoutline.
Outline(II)
II.Reasonsforsome“natural”disasters—mainlyman-made
A.floodinginBangladesh
B.floodinginSudan
III.Actiontobetaken
A.nationalgovernments—forward-looking
B.populationcontrol
C.stoppingusinghardwoodforfurnituremaking
D.educatingpeopletorealizetheconsequences
PartIV
Listentothematerial.Completetheoutline.
Outline
I.Warmingupoftheworld
A.averagetemperature
B.yearlyincrease
II.Causesofglobalwarming
III.Effectsofglobalwarming
A.greatchangesinrainfall
B.riseinthesealevel
C.reducedpotentialoffoodproduction
D.healthandsocialproblems
1.environmentalrefugees
2.changeofpatternsofdistributionofinsectsandinfectiveagents
3.changeofpatternsofheat-relatedfoodpoisoning,etc.
IV.Timetotakeaction
PartV
ExerciseC
NowlistentosomesimpletipstohelpyouSaveIt—saveenergy.Completethedo’sanddon’ts.
Do’s
Don’ts
lRough-dryyourtowelsandnylonthings l Don’t attempt to iron
everything.
lCutoutunnecessarylighting. l Don’tturntheironuptoohigh.
lDowithoutawall-fireifyoucan. l Don’tleavethekettletoboil
away.
lDe-frostthefridgeregularly. l Don’tfillthekettletothebrim
foronlyacupoftea.
lBeforeusingyourwashingmachine,wait l Don’tputhotfoodinthefridge.untilyou’veafullload.
lCookacompletemealintheovenand
SaveItontheringsandgrill.
Tapescript:
Don’tattempttoironeverything.Rough-dryyourtowelsandnylonthings.Trustthethermostatonyouriron—don’tturnituptoohigh.
Don’tleavethekettletoboilaway.Anydon’tfillittothebrimforonlyacupof
tea!
Cutoutunnecessarylighting.Everylittlehelps.SaveItonheating.Dowithoutawall-fireifyoucan.
Defrostthefridgeregularly.Icebuild-upwastesfuel.Don’tputhotfoodineither
—ifyoudo,thefridgehastoworkovertime.
Itmakesenergysensetowaituntilyou’veafullloadbeforeusingyourwashing
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