大学英语听说3Unit 2Word文件下载.docx

大学英语听说3Unit 2Word文件下载.docx

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W:

Right.EventhescientistsareuncertainabouttheexactcauseofthewarmPacificcurrentthatbringsstormsordrought—themysteriousEINino.

Q:

Whichofthefollowingistrueaccordingtotheconversation?

B）EvenscientistscannotunderstandEINino.

2.Script

Everyoneistalkingaboutenvironmentalproblem:

acidrain,greenhouseeffect,holesintheozonelayer.Weshouldthinkpositively.Whatcanwedotoimprovethings?

Iagree.Wecoulddoalotmoretoharnessthesun’senergyforheatingandlightinginourhomes.MillionsofsolarroofsarenowemerginginJapan,theU.S.,Italy,andGermany.

Howdothemanandthewomanviewtheenvironment?

D）Boththemanandwomanthinkpositivelyaboutit.

3.Script

WelivedinBeijingsomeyearsago.Itwasalwaysdifficulttokeepthehousecleanwiththewindfromthenorthblowingsandfromthedesert.

That’swhytheChinesegovernmenthasbeenencouragingpeopletoplanttreesalongtheedgesoftheGobiDesert.Nowthosetreesactaswindbarriers.

WhathavetheChinesepeoplebeenencouragedtodo?

A）Togrowtrees.

4.Script

ManyoldrefrigeratorsandcarsareenvironmentalhazardsbecausetheycontainCFCsthatdestroytheozonelayer.

Yes,butgovernmentorganizationsarehelpingpeopletosafelydisposeofoldrefrigeratorsor,inthecaseofcars,toupgradetheirairconditioning.

Whataregovernmentorganizationshelpingpeopletodo?

A）Totreatoldelectricalappliancessafely.

5.Script

Hey.That’sanaerosolsprayyou’reusingonyourhair!

Buildabomborsetfiretotheapartmenttokillusquicklyinsteadofmakingholesintheozone,sowedieofcancer.

Coolit.Thisspraydoesn’tcontainCFCs.Andyou’dbetterreadalittlemore.

Whatdoesthemanmean?

C）Thewomanshouldnotuseanaerosolspray.

III.ListeningIn

Task1:

Weshouldhaveproperrespectfornature!

Script

Martha:

Doyouthinkmostpeopleinyourculturerespectnature?

Ed:

Ithinkso.Um…morenowthanbefore.

Whatdoyouthinkisthemostseriousenvironmentproblemintheworldtoday?

Today…Ithinkdamagetotheozonelayerisabigproblem,andanotherproblemispollutioninbigcitiesandthingslikethat.

Howdoyoulearnaboutenvironmentalproblems?

Um…throughschool.Alotofclubspromoteenvironmentalsafely,andsomeTVprograms,too.Theytalkaboutenvironmentalsafelyandstufflikethat.

Doyouthinkstudentsshouldlearnmoreabouttheenvironmentatschool?

Ithinkso.So,astheygrowolder,theycanbemoreawareofalltheproblemsthataregoingon,andpreventmoreproblemsfromoccurring.

Ifyoucouldcreateanewlawtohelptheenvironment,whatwoulditbe?

Anewlawfortheenvironment?

Um…I’dprobablysaythatwhenpeoplethrowawaytheircigarettebutts,theyhavetothrowthemintothegarbagebin,notjustthrowthemeverywherebecauseit’sjustlitteringandIhatethat.Sotheyshouldbefinediftheythrowthemonthefloorontheground.

That’sagoodidea.Whatdoyoupersonallydotohelpprotecttheenvironment?

I’msoagainstlittering.Ineverlitter.IfIseesomebodylitter,Igetreallyangry.SoIalwaysthrowmytrashintothegarbagebin.

Key:

（1）nature

（2）environmentalproblem

（3）pollution

（4）promote

（5）awareof

（6）fromoccurring

（7）law

（8）throwaway

（9）fined

（10）trash

Task2:

Riverpollution

Ifyouseedeadfishfloatingontheriverornoticethatthewaterisdiscoloredandsmelly,youknowtheriverhasbeenpolluted,andtherearefourmainpossiblecausesforit.

First,fertilize.Iflargeamountoffertilizeorfarmwastedrainintoariver,theconcentrationsofnitrateandphosphateinthewaterincreaseconsiderably.Algaeusethesesubstancestogrowrapidly,turningthewatergreen.Thismassivegrowthofalgaeleadstopollution.Whenthealgaedie,theyarebrokendownbytheactionofthebacteria,whichquicklymultiply,usingupalltheoxygeninthewaterandthereforecausingthedeathoffish.

Second,industrialwaste.Factoriessometimesdischargechemicalwasteintorivers.Examplesofsuchpollutantsincludecyanide,lead,copper,andmercury.Thesesubstancesmayentertheriverinsuchhighconcentrationsthatfishandotheranimalsarekilledimmediately.Sometimesthepollutionsenterthefoodchainandaccumulateuntiltheyreachtoxiclevels,eventuallykillingfishandotheranimals.

Third,oilpollution.Ifoilentersaslow-movingriver,itformsarainbow-coloredfilmovertheentiresurface,preventingoxygenfromenteringthewater.

Fourth,warmwater.Industryoftenuseswaterforcoolingp