大学英语听力教程第三册答案主编张民伦Word文档下载推荐.docx
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大学英语听力教程第三册答案主编张民伦Word文档下载推荐.docx
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morefirewood----?
fewertrees
b.Moredomesticanimals------?
moreplants-----?
feweravailableplants
a,b--?
Moredesert----?
movesouth-----?
desrttexpandingsouth----?
nograss
2.Growingcropsstabilizesoil,withoutthemthetopsoiljustblowsaway.Butifthereisn'
tenoughrainthecropsdon'
tgrow.
3.Peopletrytogrowfoodtosupportthemselvesortocreaterancheswherecattlecanberaised,ortogethardwoodforexport,ortomakewayforanironoremine
SaharaDesert
NorthAmerica&
mostofEurope
3:
topsoilblowingaway
4:
tropicalforestsdestruction
5:
animal/plantspeciesbecomingextinct
6:
climatechangeforthewholeworld
PartIIITheEarthatrisk(II)
Treeswouldholdrainfallintheirroots.Whenforestsinthehigherup-riverhavebeendestroyed,alltherainthatfallsinthemonsoonseasonflowsstraightintotheriverandstartstheflooding.
Heimpliesthatsomenationalgovernmentsjustconsidertheresultsoftheirpoliciesinthenearfuture,orjustthinkasfaraheadasthenextelection.
floodinginBangladesh
Actiontobetaken
populationcontrol
PartIVMoreaboutthetopic:
TheEffectsofGlobalWarming
Keys:
Warmingupoftheworld
Effectsofglobal
reducedpotentialforfoodproduction
changeofpatternsofhear-relatedfoodpoisoning,etc.
PartVDoyouknow…?
F2:
F3:
F4:
F5:
T
Dos1:
yourtowels2:
Cutout3:
awall-fire4:
fridge5:
waituntilyou'
veafullload
acompletemeal
Don’ts7:
ironeverything8:
theironup9:
thekettle10:
tothebrim
11:
hotfood
Unit2
InternationalUnionfortheConservationofNature,
UnitedNations,wildlife,policies
ConventiononInternationalTradeinEndangeredSpecies,
trade,animalsandplants,1975,prohibits,8000,controls,
30000
UnitedNationsEnvironmentalProgram,
leadership,environment,qualityoflife
WorldWideFundforNature(formerlyWorldWildlifeFund),
1961,SaharaDesert,NorthAmerica&
mostofEurope,
C.Keys:
22:
43:
54:
1,65:
3
Questions:
Theyworktoconservenaturalareasthatcontainendangeredwildlife
Theyarecampaigningtoprovideseasanctuariesforsomeoftheseendangeredspecies.Protected-nestingsitesforturtleshavebeensetup
Itreferstotheplacesofsafetyintheseawhereseaanimalsareprotectedandallowedtolivefreely
PartIIChristmasbirdcounts
Jan.3rd2:
morethan40000volunteers3:
16004:
a15milediameter
anAmericanartist6:
theirnaturalhabitats7:
thelate1800s
start2:
sponsored3:
outsidecountingbirds4:
experiencedbirdwatchers
anyonethatisinterestedorconcerned6:
scheduled7:
10peopletakingpart
8:
15milediametercircle9:
thetotalbirdpopulations10:
thenumberofbirds
thelongest-runningbirdcensus12:
undefined
PartIIIDolphincaptivity
12:
33:
44:
55:
2
Dolphinsshouldbekeptincaptivity.
7:
Thereareeducationalbenefitsofkeepingmarinemammalsincaptivity.
stress(family-oriented)2:
sonarbouncingoff
averageageofdeath;
lifegettingbetterforcaptivedolphins
naturalbehabiorpatterns-altered
5:
sufferingfromfracturedskulls,ribsorjaws
can'
tlearnfromanimalsinthewildhowtheyoperate,breed,whattheyneed,etc.
Birds----ASourceofWealth
1:
93002:
Habitat3:
warmerclimates4:
300differentspecies
5:
colderclimates6:
habitatalteration7:
estheticvalue8:
Birds'
population
oneandone-halfmillion2:
20times
1004:
400005:
65million
35007:
2millionsquaremiles8:
3%
9:
200animalspecies10:
1000
athird12:
two-thirds13:
three-quarters
Unit3ElNino?
LaNina?
PartI
D.warmer/greenhouseeffect/sealevels/climatezones
As1998endsandpeoplelookforwardtothelastyearofthecentury,theWorldAlmanacspokewithexpertsaboutwhatcomesnext.Almanaceditorialdirectorsaystheexpertsbelievethenextcenturywillbringlotsofchanges.
Warm,ofcourse,thatourclimateisgoingtocontinuegettingwarmer.That’sthesubject,bytheway,ofanothernewarticleonthe1999WorldAlmanac.Thegreenhouseeffect,exactlywhatcausesit,andwhatstepstobetakento,perhapstoalleviateglobalwarmings.I’veseenrecentlythat1998isgoingtogodownasthewarmestyeareveronrecord.Andsothat’sgoingtobea
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