英语听力教程第二版第三册答案listen_this_way3_张民伦.pdfVIP

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英语听力教程第二版第三册答案listenthisway3张民伦版

UNIT1

PartIGettingready

A.

B.Keys:

1:burningoftheforests/treeremoval(deforestation)/reductionoftheworldsrainforests

2:globalwarming/greenhouseeffect/emissionsofCO2

PartIITheEarthatrisk(I)

A.Keys:

1.

a.Morepeople?morefirewood?fewertrees

b.Moredomesticanimals?moreplants?feweravailableplants

a,b--?Moredesert?movesouth?desrttexpandingsouth?nograss

2.Growingcropsstabilizesoil,withoutthemthetopsoiljustblowsaway.Butifthereisntenoughrainthe

cropsdontgrow.

3.Peopletrytogrowfoodtosupportthemselvesortocreaterancheswherecattlecanberaised,ortoget

hardwoodforexport,ortomakewayforanironoremine

B.Keys:

1:SaharaDesert

2:NorthAmericamostofEurope

3:topsoilblowingaway

4:tropicalforestsdestruction

5:animal/plantspeciesbecomingextinct

6:climatechangeforthewholeworld

PartIIITheEarthatrisk(II)

A.Keys:

1:Treeswouldholdrainfallintheirroots.Whenforestsinthehigherup-riverhavebeendestroyed,allthe

rainthatfallsinthemonsoonseasonflowsstraightintotheriverandstartstheflooding.

2:Heimpliesthatsomenationalgovernmentsjustconsidertheresultsoftheirpoliciesinthenearfuture,or

justthinkasfaraheadasthenextelection.

B.Keys:

1:floodinginBangladesh

2:Actiontobetaken

3:populationcontrol

PartIVMoreaboutthetopic:TheEffectsofGlobalWarming

Keys:

1:Warmingupoftheworld

2:Effectsofglobal

3:reducedpotentialforfood