六级听力练习IV录音文字.docx
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六级听力练习IV录音文字.docx
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六级听力练习IV录音文字
SectionA
Directions:
Inthissection,youwillheartwolongconversations.Attheendofeachconversation,youwillhearsomequestions.Boththeconversationandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C)andD).ThenmarkthecorrespondingletteronAnswerSheet1withasinglelinethroughthecentre.
ConversationOne
W:
Today'sgueston"ScienceUpdate"isDavidBrown.Dr.Brown,youandyourteamhavefoundbacteriafarbelowtheEarth'ssurface.Youmustbethrilledaboutyourdiscovery.
M:
Well,yes,it'sveryexciting.Foralongtimewe'dsuspectedthepresenceofsuchorganisms,butwelackedsubstantialevidence.
W:
Howdidyouconfirmtheexistenceofthebacteria?
M:
Well,technologyhelped.Ourdrillingtechniqueshaveimprovedsignificantly,andsotheriskthatsurfacebacteriacouldbemistakenforthosefoundatmuchgreaterdepthwasreduced.Withthenewtechniques,wecouldgetmuchdeeperintotheEarth.
W:
Howfardowndidyouactuallyget?
M:
Inonecase,aboutthreekilometers.Weweresurprised,Imusttellyou,thattherewereorganismsthatfardown.
W:
Youknow,itsoundslikefiction,somethinglikealostworld.
M:
Let'scallitahiddenbiosphere,andit'sprobablyaveryextensiveone.
Themassofthelivingorganismsbelowthesurfacemaybeequalinsizetothemassofthesurfacebacteria.
W:
Haveyoufoundanyuniquelife-forms?
M:
Yes.We'vefoundaveryspecialorganism.Let'scallitType-Abacterium.Itcanliveandgrowonlywherethereisnooxygen.
W:
Isthereanydangerofthesebacteriainfectingpeoplewhenyoubringthemtothesurface?
M:
Thesebacteriawereadaptedtoanenvironmentthat'scompletelydifferentfromhumans'.That'stosay,theycouldnotsurviveinourenvironment.Sowereallydon'tneedtoworryaboutthesebacteriacausingillnessinpeople.
Questions1to4arebasedontheconversationyouhavejustheard.
1.WhathaveDr.Brownandhisteamdiscovered?
2.WhathelpstoconfirmtheexistenceofbacteriabelowtheEarth'ssurface?
3.Howdeepdowndidthemanfindthebacteria?
4.Whydoesthemansaythereisnodangerofinfectionbythebacteriabroughttosurface?
ConversationTwo
W:
Ihaven'tseenyouhereforacoupleweeks.Haveyoustoppedeatingorsomething?
M:
No.DoesitlooklikeI'vestoppedeating?
I'vebeenspendingalotoftimeinthelibrary.
W:
Workingonapaper?
M:
IwishIwasworkingonapaper!
I'mworkingonthreedifferentpapers:
anthropology,Englishliterature,andhistory.
W:
Wow,thatisalotofwork.
M:
Yeah,andwhat'sfrustratingisthatI'mstudyingthenineteenthcenturyBritishEmpireinallthreeclasses,butIcan'tjustwriteasinglepaperforallthree.
W:
Whynot?
M:
Theprofessorswon'tletmeevenifImakeitthreetimesaslongasthesuggestedlength.
W:
That'stoobad.Couldyouwriteyourpapersonthreeaspectsofonetopic?
M:
Hmm.Whatdoyoumean?
Doyouhavesomethinginmind?
W:
Well,let'ssee.Hmm...MaybeyoucoulddosomethingwithRomanticism,like,oh...writeyouranthropologypaperontheculturalbasisofRomanticism,and,uh,yourhistorypaperontheinfluenceoftheRomanticpoetsonBritishforeignpolicy,and,OK,andyourEnglishpaperonananalysisofsomeRomanticpoems.
M:
Hey,that'snotabadidea!
I'vealreadystartedtheresearchforoneofthepapers,soIcanusethat.WhatcanIdotorepayyou?
W:
Youwanttowriteupmychemistrypaperforme?
M:
I'dloveto,butI'venevertakenchemistry,soI'mnotsureyou'dliketheresults.
W:
Ohwell,nothanksnecessarythen.I'lldoitmyself.Haveagoodweekend,andtrytogetoutofthelibraryandgetsomesleep.Youhavebigcirclesunderyoureyes.
M:
OK,I'lltry.Seeyoulater.
Questions5to8arebasedontheconversationyouhavejustheard.
5.Whathasthemanbeenbusydoingrecently?
6.Whatdoesthewomansuggestthemandotomakehisworkeasier?
7.WhydoesthewomanmentionRomanticism?
8.Whydoesn'tthemanwanttohelpthewoman?
SectionB
Directions:
Inthissection,youwillheartwopassages.Attheendofeachpassage,youwillhearsomequestions.Boththepassageandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C)andD).ThenmarkthecorrespondingletteronAnswerSheet1withasinglelinethroughthecentre.
PassageOne
Ihopeyouhaveallfinishedreadingtheassignedchapteroninsurance-sothatyou'repreparedforourdiscussiontoday.But,beforewestart,I'dliketomentionafewthingsyourtextdoesn'tgointo.
It'sinterestingtonotethatinsurancehasexistedinsomeformforaverylongtime.Theearliestinsurancepoliciesprovidedshippingprotectionformerchantsasfarbackas3000B.C.
Ingeneral,thecontractswereoftennomorethanverbalagreements.Theygrantedloanstomerchantswiththeunderstandingthatifaparticularshipmentofgoodswaslostatsea,theloandidn'thavetoberepaid.Interestontheloansvariedaccordingtohowriskyitwastotransportthegoods.Duringperiodsofheavypiracyatsea,forexample,theamountofinterestandthecostofthepolicywentupconsiderably.So,youcanseehowinsurancehelpedencourageinternationaltrade.Eventhemostcautiousmerchantsbecamewillingtoriskshippingtheirgoodsoverlongdistances-nottomentioninhazardousweatherconditions-whentheyhadthiskindofprotectionavailable.
Generallyspeaking,thebasicformofaninsurancepolicyhasbeenprettymuchthesamesincetheMiddleAges.Therearefourpointsthatwereprominentthenandremaindominantinallpoliciestoday.Thesewereoutlinedinchaptersixandwillserveasthebasisfortherestoftoday'sdiscussion.
Questions9to11arebasedonthepassageyouhavejustheard.
9.Whowerethefirstinsurancecontractsdesignedtoprotect?
10.Whatdeterminedtheinterestontheloans?
11.Whatdoesthespeakersayaboutcurrentinsurancepolicies?
PassageTwo
Milkwasabasicfoodofmanlongbeforehistorywaswritten.Itwillprobablykeeponbeingoneaslongasthereareanimalsthatgivemilk.
Manyancientpeoplethoughtthatmilkhadgreathealingpower.OneofthemostfamousGreekdoctorstoldhispatientstodrinkmilktocureillness.
Formorethantwohundredyearsmostpeoplegottheirmilkfromtheirowncattleorfromanearbydairyherd.Butintimenewinventionsmadethedairyindustryabigbusiness.In1851GailBorden,founderofamilkcompany,foundawaytotakesomeofthewateroutofmilk.Thismadeitkeepmuchlonger.Fouryearslater,LouisPasteurintroducedthepasteurizationprocess.Thisprocesskilledthebacteriainmilkthatcausedittospoil.Next,aspecialmilkbottlewasdesigned.Thiswasfollowedbytheinventionofmachinesthatcouldfillbottlesandcapthemautomatically.Thesediscoverieshadagreateffectonthedairyindustry.Theymeantthatmilkcouldbestoredlonger.Itcouldbesafelyshippedoverlongdistances.Preparinganddistributingmilksoonbecamealarge-scalebusiness.Recently,inasingleyearmorethansixtybillionquartsofmilkweresoldintheUnitedStates.
SomepeoplebelievethatmilkdrinkingwillbecomelesspopularinAmericathanithasbeen.Butrememberhowlongmilkhasbeenabasicfoodandthinkofthemanywaysinwhichitisuseful.Itseemssafetosaythatthemilkindustrywillalwaysbeimportant.
Questions12to15arebasedonthepassageyouhavejustheard.
12.Whatdidancientpeoplethinkaboutmilk?
13.Whydidmilkbecomeabigbusiness?
14.Whatinventionmademilkkeeplongerin1851?
15.Whatdoesthespeakerthinkofthemilkindustryinthefuture?
SectionC
Directions:
Inthissection,youwillhearrecordingsoflecturesortalksfollowedbysomequestions.Therecordingswillbeplayedonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C)andD).ThenmarkthecorrespondingletteronAnswerSheet1withasinglelinethroughthecentre.
Nowlistentothefollowingrecordingandanswerquestions16to19.
Fiftyyearsago,whenIbeganexploringtheocean,nooneimaginedthatwecoulddoanythingtoharmtheoceanbywhatweputintoitorbywhatwetookoutofit.Itseemed,atthattime,tobeaseaofparadise,butnowweknowthatwearefacingparadiselost.
Iwanttosharewithyoumypersonalviewofchangesintheseathataffectallofus,andtoconsiderwhyitmattersthatin50years,we'velost---actually,we'vetaken,we'veeaten---morethan90percentofthebigfishinthesea;whyyoushouldcarethatnearlyhalfofthecoralreefshavedisappeared;whyareductionofoxygeninlargeareasofthePacificshouldconcernnotonlythecreaturesthataredying,butitreallyshouldconcernyou.Itdoesconcernyou,aswell.
Therewasstilltime.Well,nowisthattime.Ihopeforyourhelptoexploreandprotectthewildoceaninwaysthatwillrestorethehealthand,insodoing,securehopeforhumankind.Healthtotheoceanmeanshealthforus.
Forme,asascientist,itallbeganin1953whenIfirsttriedunderwaterbreathingdevice.It'swhenIfirstgottoknowhowfishswimminginmysteriousocean.Iactuallylovedivingatnight;youseealotoffishthenthatyoudon'tseeinthedaytime.Sincethen,I'vestarteddesigningandbuilding13underwatersystemstoaccessthedeepsea.Iledafive-yearNationalGeographicexpedition,theSustainableSeasexpeditions,usingtheselittlesubmarines.They'resosimpletodrivethatevenascientistcandoit.AndI'mlivingproof.
Overtime,mostoftheplanet'sorganiccarbonhasbeenabsorbedandstoredthere.Theoceandrivesclimateandweather,stabilizestemperature,shapesEarth'schemistry.Waterfromtheseaprovideshomeforabout97percentoflifeintheworl
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