大学英语听力教程第三册答案主编张民伦VIP免费

《英语听力教程3》答案与听力材料呵呵....考试一路顺风......UNIT1A.B.Keys:PartIGettingready1:burningoftheforests/treeremoval(deforestation)/reductionoftheworld'srainforests2:globalwarming/greenhouseeffect/emissionsofCO2PartIITheEarthatrisk(I)A.Keys:1.a.Morepeople--------?morefirewood----?fewertreesb.Moredomesticanimals------?moreplants-----?feweravailableplantsa,b--?Moredesert----?movesouth-----?desrttexpandingsouth----?nograss2.Growingcropsstabilizesoil,withoutthemthetopsoiljustblowsaway.Butifthereisn'tenoughrainthecropsdon'tgrow.3.Peopletrytogrowfoodtosupportthemselvesortocreaterancheswherecattlecanberaised,ortogethardwoodforexport,ortomakewayforanironoremineB.Keys:1:SaharaDesert2:NorthAmerica&mostofEurope3:topsoilblowingaway4:tropicalforestsdestruction5:animal/plantspeciesbecomingextinct6:climatechangeforthewholeworldPartIIITheEarthatrisk(II)A.Keys:1:Treeswouldholdrainfallintheirroots.Whenforestsinthehigherup-riverhavebeendestroyed,alltherainthatfallsinthemonsoonseasonflowsstraightintotheriverandstartstheflooding.2:Heimpliesthatsomenationalgovernmentsjustconsidertheresultsoftheirpoliciesinthenearfuture,orjustthinkasfaraheadasthenextelection.B.Keys:1:floodinginBangladesh2:Actiontobetaken3:populationcontrolPartIVMoreaboutthetopic:TheEffectsofGlobalWarmingKeys:1:Warmingupoftheworld2:Effectsofglobal3:reducedpotentialforfoodproduction4:changeofpatternsofhear-relatedfoodpoisoning,etc.PartVDoyouknow…?A.Keys:1:F2:F3:F4:F5:TB.Keys:Dos1:yourtowels2:Cutout3:awall-fire4:fridge5:waituntilyou'veafullload6:acompletemealDon’ts7:ironeverything8:theironup9:thekettle10:tothebrim11:hotfoodUnit2PartIGettingreadyA.B.Keys:1:InternationalUnionfortheConservationofNature,UnitedNations,wildlife,policies2:ConventiononInternationalTradeinEndangeredSpecies,trade,animalsandplants,1975,prohibits,8000,controls,300003:UnitedNationsEnvironmentalProgram,leadership,environment,qualityoflife4:WorldWideFundforNature(formerlyWorldWildlifeFund),1961,SaharaDesert,NorthAmerica&mostofEurope,topsoilblowingawayC.Keys:1:22:43:54:1,65:3Questions:1:Theyworktoconservenaturalareasthatcontainendangeredwildlife2:Theyarecampaigningtoprovideseasanctuariesforsomeoftheseendangeredspecies.Protected-nestingsitesforturtleshavebeensetup3:ItreferstotheplacesofsafetyintheseawhereseaanimalsareprotectedandallowedtolivefreelyPartIIChristmasbirdcountsA.Keys:1:Jan.3rd2:morethan40000volunteers3:16004:a15milediameter5:anAmericanartist6:theirnaturalhabitats7:thelate1800sB.Keys:1:start2:sponsored3:outsidecountingbirds4:experiencedbirdwatchers5:anyonethatisinterestedorconcerned6:scheduled7:10peopletakingpart8:15milediametercircle9:thetotalbirdpopulations10:thenumberofbirds11:thelongest-runningbirdcensus12:undefinedPartIIIDolphincaptivityA.B.Keys:1:12:33:44:55:26:Dolphinsshouldbekeptincaptivity.7:Thereareeducationalbenefitsofkeepingmarinemammalsincaptivity.C.Keys:1:stress(family-oriented)2:sonarbouncingoff3:averageageofdeath;lifegettingbetterforcaptivedolphins4:naturalbehabiorpatterns-altered5:sufferingfromfracturedskulls,ribsorjaws6:can'tlearnfromanimalsinthewildhowtheyoperate,breed,whattheyneed,etc.PartIVMoreaboutthetopic:Birds----ASourceofWealthKeys:1：93002：Habitat3：warmerclimates4：300differentspecies5：colderclimates6：habitatalteration7：estheticvalue8：Birds'populationPartVDoyouknow…?Keys:1:oneandone-halfmillion2:20times3:1004:40...