国际交流英语视听说第4册unit2

国际交流英语视听说国际交流英语视听说Unit2ProtectingOurPlanetBook4ExploringtheThemeExampleAnswersThebiggestthreattobigcatsisprobablyhunting.Peoplewanttheirskins,orinsomecases,theymightthinkthebigcatsareathreattopeopleortodomesticanimals.Habitatlosscouldbeanotherfactorthatisendangeringbigcats.1.Lionsandothertypesofbigcatsaredyingatarapidrate.Whatdoyouthinkisthebiggestthreattotheseanimals?ProtectingOurPlanetExploringtheThemeExampleAnswersIfaplantspeciesbecomesextinct,thenanyinsectspeciesoranimalthatdependsonitcouldgowithoutfoodandshelter.Inaddition,plantsareimportanttothesoilandtheair,solosingaplantspeciescouldhaveseveralnegativeeffectsontheenvironment.2.Ifaplantspeciesbecomesextinct,whateffectdoesthishaveontheenvironment?ProtectingOurPlanetExploringtheThemeExampleAnswersTropicalpalmshavethegreatestpercentageofspeciesindanger,whilelobsters,ontheotherhand,havethesmallestpercentageandnumberofspeciesindanger.Therefore,tropicalpalmsarethemostthreatenedandlobstersaretheleastthreatened.1.Whichgroupisthemostthreatened?Whichistheleast?ProtectingOurPlanetExploringtheThemeExampleAnswersAllofthecategoriesofspeciesarecommoninChinaexceptfortropicalpalms,whichcanbeonlyseeninseveralprovinces.CoralreefsusedtobecommonintheoceansaroundChina,butamajorityofthereefshavebeendestroyedduetoover-fishingandpollution.2.WhichcategoriesofspeciesarecommoninChina?ProtectingOurPlanet国际交流英语视听说AnalyticalListeningUnit2ProtectingOurPlanetAnalyticalListeningListening1ExampleAnswers1.Theduskyseasidesparrowisnowextinct.Whatkindofhabitatdoyouthinkthisbirdlivedin?Thebirdissittingonabranch,soitmusthavelivedinplaceswithtrees.SouthernFloridaisalsoawarmplacewithalotofwetlands.AnalyticalListeningListening1ExampleAnswers2.Whatdoyouthinkaresomepossiblecausesforitsextinction?Thebirdmayhavebecomeextinctbecauseofhabitatloss,environmentalpollution,ordisease.(It’sasmallbird,sopeoplewouldn’twanttohuntit.)AnalyticalListeningA|Note-Taking.Listentotheguidedtourandcompletethenotes.Besuretousekeywords,abbreviations,andsymbols.Noticetheindentations.AGuidedTourListening1EndangeredSpeciesAct(ESA)—1973Protectsanimalsandtheir________________Ex.:_________________________________Ongoingconflictbetween___________and_________Ex.:_______________________________ESAprotects____________;ranchersfeellawviolates___________habitatssteelheadtroutinWashingtonstatelandownersgovernmentgraywolfinWyomingandIdaholandtheirrightsAnalyticalListeningA|Note-Taking.Listening1EndangeredSpeciesTodaySituationtodayis___________thanin19731.____________specieslistedas____________or____________2.Since1973only______speciesremovedfromlist3.BUTonly_______removedbecausetheyrecovered;______becameextinct,otherslistedbymistake4._______morespeciesmaysoonbeaddedtolistworse1,300endangeredthreatened39149300AnalyticalListeningA|Note-Taking.Listening1ConclusionEvenw/ESAinplace,___________________________________________________________________notmakingmuchprogressAnalyticalListeningListening1B|ListeningforMainIdeas.Readthequestionsandanswerchoices.Thenlistenagainandchoosethecorrectanswers.UseyournotesfromexerciseAtohelpyou.1.Whatisthemaintopicofthetalk?a.Whytheduskyseasidesparrowbecameextinct.b.Thedifficultiesofprotectingbothanimalsandtheirhabitats.c.ReasonsthattheEndangeredSpeciesActisn’tworking.bAnalyticalListeningListening1B|ListeningforMainIdeas.Readthequestionsandanswerchoices.Thenlistenagainandchoosethecorrectanswers.UseyournotesfromexerciseAtohelpyou.2.WhatdoestheEndangeredSpeciesActprotect?a.Endangeredanimalsandtheirhabitats.b.Endangeredanimalsbutnottheirhabitats.c.Animalhabitatsbutnotendangeredanimals.aAnalyticalListeningListening1B|ListeningforMainIdeas.Readthequestionsandanswerchoices.Thenlistenagainandchoosethecorrectanswers.UseyournotesfromexerciseAtohelpyou.3.WhathashappenedsincethepassageoftheEndangeredSpeciesAct?a.Thenumberofspeciesthatareendangeredhasgreatlydecreased.b.Thenumberofspeciesthatareendangeredhasincreasedalot.c.Thenumberofspeciesthatareendangeredhasnotchangedmuch.cAnalyticalListeningPriorKnowledge.Discussthequestionswithapartner.Listening21.Ducks,quail,turkeys,andpheasantsarepopularbirdstohunt.Elkanddeerarepopularfour-leggedanimalstohunt.Whatotheranimalsdoyouknowthatarehunted?2.Haveyouevergonehunting?Ifyouhave,didyoulikeit?Ifyouhaven’t,wouldyouliketotryit?Whyorwhynot?AnalyticalListeningListening2ExampleAnswersDependingontheplace,peoplealsohuntrabbits,squirrels,bears,moose,lions,elephants,alligators,andotheranimals.1.Ducks,quail,turkeys,andpheasantsarepopularbirdstohunt.Elkanddeerarepopularfour-leggedanimalstohunt.Whatotheranimalsdoyouknowthatarehunted?AnalyticalListeningListening2ExampleAnswer1Yes,Ihave.IlikeditbecauseIenjoybeingoutdoors,anditwasexcitingtolookforananimal,evenifIdidn’tkillone.2.Haveyouevergonehunting?Ifyouhave,didyoulikeit?Ifyouhaven’t,wouldyouliketotryit?Whyorwhynot?AnalyticalListeningListening2ExampleAnswer2Yes,Ihave.Ididn’tlikeitbecausetherealityofkillingandprocessingananimalforfoodwasunpleasant.2.Haveyouevergonehunting?Ifyouhave,didyoulikeit?Ifyouhaven’t,wouldyouliketotryit?Whyorwhynot