2022-2023年甘肅省天水市大學英語6級大學英語六級真題一卷(含答案)

2022-2023年甘肅省天水市大學英語6級大學英語六級真題一卷(含答案)學校:________班級:________姓名:________考號:________

一、2.ReadingComprehension(SkimmingandScanning)(20題)1.

Whenunemployed,somecareeriststaketheopportunityto____________familymattersinadditiontopursuingtrainingorvolunteering.

2.TheWebLifestyle

Ifyouaskedpeopletodaywhytheyusedthetelephonetocommunicatewiththeirfriendsorwhytheyturnedtothetelevisionforentertainment,theywouldlookatyouasifyouwerecrazy.Wedon'tthinka-boutatelephoneoratelevisionoracarasbeingoddities.Thesethingshavebecomesuchanintegralpartoflifethattheyarenolongernoticed,letaloneremarkedupon.

Inthesameway,withinadecadenoonewillnoticetheWeb.Itwilljustbethereanintegralpartoflife.ItwillbeareflextoturntotheWebforshopping,education,entertainmentandcommunication,justasitisnaturaltodaytopickupthetelephonetotalktosomeone.

ThereisincredibleinterestintheWeb.Yetitisstillinitsinfancy.Thetechnologyandthespeedofresponseareabouttoleapforward.ThiswillmovemoreandmorepeopletotheWebaspartoftheireverydaylives.Eventually,everyone'sbusinesscardwillhaveanelectronic,tailaddress.Everylawyer,everydoctorandevery,business—fromlargetosmall—willbeconnected.

IntheUnitedStateselections,peoplenowturntotheInternettoseereal-timeresults.ThePathfindermissiontoMarsandtheproblemswiththeMirspacestationdrewmillionsofpeopletotheVIkbformoreup-to-datedetailthanwereavailableelsewhere.

Achangelikethisisoftengenerational.Olderpeoplehavetolearnsomethingnewoutsidetheireverydayexperiences,whilekidswhogrowupwithanewtechnologysimplytreatitasgiven.CollegecampusesinparticularareprovidingtheingredientstogeneratethecriticalmassforaWeb-readyculture.

TodayintheUnitedStates,thereareover22millionadultsusingtheWeb,abouthalfofwhomaccesstheInternetatleastonceaday.Meanwhile,thevarietyofactivitiesontheWebisbroadeningatanamazingrate.ThereisalmostnotopicforwhichyoucannotfindfairlyinterestingmaterialontheWeb.Manyofthesesitesaregettingexcellenttrafficflow.Wanttobuyadog?Orsellashare?Ororderacar?UsetheInternet.WherearewegoingtogetthetimetolivewiththeWeb?Insomeinstances,peoplewillactuallysavetimebecausetheWebwillmakedoingthingsmoreefficientthaninthepast.Beingabletogetinformationaboutamajorpurchase,forexample.Orfindingouthowmuchyourusedcarisworth.OrwhatisyourcheapestwayofgettingtoFlorida.ThatisveryeasytofindontheWeb,eventoday.Inotherinstances,peoplewilltradethetimetheynowspendreadingthepaper,orwatchingtelevision,forinformationorentertainmenttheywillfindonthecomputerscreen.Americans,particularlyyoungones,willspendlesstimeinfrontofatelevisionscreen,moreontheWeb.

OnegreatbenefitoftheWebisthatitallowsustomoveinformationonlinethatnowresidesinpaperform.SeveralstatesinAmericaareusingtheWebinaprofoundway.Youcanapplyforvariouspermitsorsubmitapplicationsforbusinesslicenses.Somestatesareputtinguplistingsofjobs—notjuststategovernmentjobs,butallthejobsavailableinthestate.Ibelieve,overtime,thatalltheinformationthatgovernmentsprint,andallthosepaperformstheynowhave,willbemovedontotheInternet.Electroniccommercenotchesupmonth-by-monthtoo.Itisdifficulttomeasure,becausealotofelectroniccommerceinvolvesexistingbuyersandsellerswhoaresimplymovingpaper-basedtransactionstotheWeb.Thatisnotnewbusiness.Microsoft,forexample,purchasesmillionsofdollarsofPCsonlineinsteadofbypaper.How-ever,thatisnotafundamentalchange;ithasjustimprovedtheefficiencyofanexistingprocess.Thebiggestimpacthasoccurredwhereelectroniccommercematchesbuyersandsellerswhowouldnotpreviouslyhavefoundeachother.Whenyougotoabooksiteandfindanobscurebookthatyouneverwoul

A.YB.NC.NG

3.WhatdidTimYoungsuggestdotoemployeesembarrassingco-workersbygivingtoomuchpersonalinformation?

A.Sackingthemonthespotfordoingso.

B.Forbiddingsensitivetopicsintheoffice.

C.Tryingtoredirecttheirattentiontowork.

D.Limitingtheirtimespentwithco-workers.

4.

InsuchepisodesastheRedBaron,theshowhasbeenheavilyrelyingon______.

5.Youshouldpayspecialattentiontothefirstsixquestionsofthe12questionsbecausetheymakeupthebaseonwhich______.

6.

Fullerwon______in1954forhisachievementinthe42-footcardboardshelter.

7.

Brazilisnowangryatthelosingtradeasaresultof______.

A.tradeprotectionism

B.developedcountries'limitationonimportation

C.highertariffsonsuccessivestagesofproduction

D.westerncountries'economicpunishment

8.

Whatisnotsaidtobeawayofcleaningupafterourselves?

A.Throwlessaway.

B.Don'tuseitagain.

C.Designrecycledproducts,

D.Lastlonger.

9.WhatdoesthechairmanofVodafoneJohnBondthinkofbanks?

A.Theycanhardlygetprofitoutofsmallpayments.

B.Theymaydisappearinthenearfuturejustlikecash.

C.TheyhavegreatlychangedvillagelifeinAfrica.

D.Theyholdaprimaryroleinthemoney-transferbusiness.

10.Whatdidtheresearchersdotoparticipantsintheexperiments?

A.Theyputonamagicperformancetotheparticipants.

B.Theydivertedtheparticipants'attentionanddisruptedtheirchoosing.

C.Theychangedthethingsparticipantschosewithouttheirnoticing.

D.Theyaddedconfusiontothetwooptionstheparticipantsfaced.

11.ThesurveysofERShelplow-incomehouseholdsdevelopeconomizingpractices.

12.

Somemiddle-agedpeopletendtosufferfromBiochemicaldepressionwhichmightresultfrom______withinthebrain.

13.

AU.S.scientificreportconcludedthatsometrendsofclimatechangewerecausedby______

14.

NationalNegroBusinessLeagueexistsfrom______.

15.AccordingtoDr.PeterDiot,______couldbepowerfulenoughtopreventHIVtransmission.

16.

Thosepeoplewhohavesetupcorrectgoalswillalwaysbehappy.

A.YB.NC.NG

17.

Whenyouarefacedwithfears,youusuallyfindthesituationis______.

18.

AccordingtoThurgoodMarshall,thethenchiefcounselfortheNationalAssociationfortheAdvancementofColoredPeople,themutinytrialwasoneofthebiggestmiscarriagesofjusticeinAmericanhistory:itwasnot50menontrialformutiny,but______.

19.

Bysaying"Asyouexperiment,avoidrandommotion",theauthormeansyoushould______inordernottoheadinanoppositedirection.

20.

Thephenomenonofmenhavingtwothingssciaticaandupcomingweddingincommonindicatesthat______.

A.pre-marriageanxietyisinevitableformostmen

B.psychologicaldistressmaycontributetolow-backpain

C.almostallbridegroomshaveadegeneratedorherniateddisc

D.backpainmayintensifypre-marriagejitters

二、3.ListeningComprehension(20題)21.(32)

A.Givingmoremoney.

B.Playingwiththemtogether.

C.Givingrightleading.

D.Givingmisleading.

22.SectionB

Directions:Inthissection,youwillhear3shortpassages.Attheendofeachpassage,youwillhearsomequestions.Boththepassageandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA,B,CandD.

聽力原文：(26)Scientistsclaimthatairpollutioncausesadeclineintheworld'saverageairtemperature.Inordertoprovethattheory,ecologistshaveturnedtohistoricaldatainrelationtoespeciallyhugevolcaniceruptions.Theysuspectthatvolcanoeseffectweatherchangesthataresimilartoairpollution.

OnesourceofinformationistheeffectoftheeruptionofTambora,avolcanoinSumbawa,theDutchEastIndiestheformernameoftheRepublicofIndonesiainApril1815.Thelargestrecordedvolcaniceruption,(27)Tomborathrew150milliontonsoffineashintothesky.Theashfromavolcanospreadsworldwideinafewdaysandremainsintheairforyears.Itseffectistoturnincomingsolarradiationintospaceandthuscooltheearth.Forexample,recordsofweatherinEnglandshowthatbetweenAprilandNovember1815,theaveragetemperaturehadfallen4.5F.Duringthenexttwenty-fourmonths,Englandsufferedoneofthecoldestperiodsofitshistory.Farmers'recordsfromApril1815toDecember1818indicatefrostthroughoutthespringandsummerandsharpdecreasesincropandlivestockmarkets.(28)Sincetherewasatimelagofseveralyearsbetweencauseandeffect,bythetimetheworldagriculturalcommoditycommunityhaddeteriorated,noonerealizedthecause.

Ecologiststodaywarnthatwefaceatwofoldmenace.Theever-presentpossibilityofvolcaniceruption,suchasthatofMt.St.HelensinWashington,addedtoman'spollutionoftheatmospherewithoil,gas,coal,andotherpollutingsubstances,maybringusincreasinglycolderweather.

(27)

A.Theywereevidentinthedecreasedworldtemperature.

B.Theywereofseveraldays'durationworldwide.

C.TheywerefeltmainlyintheDutchEastIndies.

D.Theywereimmediatelyevidenttotheworld'sscientists.

23.(16)

A.Sheisstubborn.

B.Sheislonely.

C.Sheisnoteasy-going.

D.Sheishopeless.

24.

【B10】

25.聽力原文：Themedicalworldisgraduallyrealizingthatthequalityoftheenvironmentinhospitalsmayplayasignificantroleintheprocessofrecoveryfromillness.AspartofanationwideeffortinBritaintobringartoutofthegalleriesandintopublicplaces,someofthecountry'smosttalentedartistshavebeencalledintotransform.olderhospitalsandto"softenthehardedgesofmodernbuildings".Ofthe2500NationalHealthServicehospitalsinBritain,almost100nowhavesignificantcollectionsofcontemporaryartincorridors,waitingareasandtreatmentrooms.

Alltheseoweagreatdealtooneartist,PeterSenior,whosetuphisstudioataManchesterhospitalinnortheasternEnglandduringtheearly1970's.Hefelttheartisthadlosthisplaceinmodernsociety,andthatartshouldbeenjoyedbyawideraudience.

Atypicalhospitalwaitingroommighthaveasmanyas5000visitorseachweek.Whatabetterplacetoholdregularexhibitionsofart!Seniorheldthefirstexhibitionofhisownpaintingsintheout-patientwaitingareaoftheManchesterRoyalHospitalin1973.BelievedtobeBritain'sfirsthospitalartist,Seniorwassomuchindemandthathewassoonjoinedbyateamofsixyoungartschoolgraduates.

Theeffectisstriking.Nowinthecorridorsandwaitingroomsthevisitorexperiencesafullviewoffreshcolors,playfulimagesandrestfulcourtyards.Thequalityoftheenvironmentmayreducetheneedforexpensivedrugswhenapatientisrecoveringfromanillness.Astudyhasshownthatpatientswhohadaviewontoagardenneededhalfthenumberofstrongpainkillerscomparedwithpatientswhohadnoviewatalloronlyabrickwailtolookat.

(33)

A.Theimportanceofthequalityoftheenvironmentinhospitals.

B.Thecontributionofsomeartiststohospitals.

C.Howtoimprovetheenvironmentinhospitals.

D.Howpatientsrecoverfromillness.

26.(34)

A.OniPodyoucanwatchallTVprogramsofABC

B.TwoABChitsareavailableoniPod.

C.TheiPodwilljoindigitalvideorecordersandDVDs.

D.TheiPodbegantoproduceitsownprograms.

27.SectionB

Directions:Inthissection,youwillhear3shortpassages.Attheendofeachpassage,youwillhearsomequestions.Boththepassageandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA,B,CandD.

聽力原文：AmyJohnsonwasapioneerairwomanin26,Britain.ShewasbornonJuly1st,1903,inYorkshireandlivedthereuntil1923whenshewenttoSheffieldUniversitytostudy.(30)Aftergraduationfromuniversity,shetookajobasasecretarytoaLondonlawyer.Atthesametimeshebecameinterestedinflying.Soonherbobbybecameadeterruination,notsimplytomakeacareerinaviation,buttosucceedinsomeprojectwhichwouldprovetotheworldthatwomencouldbeascompetentasmeninamale-dominatedfieldinthosedays.

Earlyin1930s,shechoseherobjective:toflysolotoAustraliaandtobreakthepreviousrecordof16days.Herparentsandsomeofherfriendslenthermoneytobuyausedairplane.(31)AmysetoffonMay5,1930.HerroutetookheroverViennaandBaghdad.Shewascaughtinasandstormaidhadtomakemiemergencylandinginthedesert.SixdayslatershelandedinIndia.(31)Afterexperiencing:muchhardship,shefinallyreachedAustraliaonMay24,completingaflightof11000miles.ShewasthefirstwomantoflyalonetoAustralia.Inlateryears,shesetseveralotherrecordsinflighthistory.

DuringWorldWarII,Amyjoinedotherprofessionalpilotstoservehercountry.HerflyingdutiesconsistedoftransportingaircraftfromfactoriestoBritishairbases.Itwasduringoneofthoseflightsill1941thatAmycrashedintoariverandwasdrowned,atragicandearlyendtothelifeofBritain'smostfamouswomanpilot.

(27)

A.Anairwoman.B.Ateacher.C.Alawyer.D.Asecretary.

28.(13)

A.Theman'snervousbutbelieveshewillbebettertomorrow.

B.Themanisbeggingthewomantolethimpassthepresentation.

C.Theman'snervousabouthispresentationbecausehe'sunprepared.

D.Themanlefthispresentationonthewindowedgebuthe'llgetittomorrow.

29.(22)

A.Thetransformer.B.Thebattery.C.Thefuses.D.Thewires.

30.(28)

A.Externalmotivationcansometimesbringaboutnegativeoutcomes.

B.Peoplearelikelytodotheirworkwithoutenthusiasmbecauseofthreat;

C.Studentsoftenstudyinordertopleasetheirparentsandteachers.

D.Thesecondform.ofmotivationcanbedangerousifthestudentscan'tachievetheirowngoal.

31.(23)

A.Saturday.B.Sunday.C.Monday.D.Tuesday.

32.聽力原文：W:I'mexhausted.Istayedupthewholenightstudyingformyhistorymidtermexam.

M:Whydoyoualwayswaittillthelastminute?

Q:Whatcanbeinferredaboutthewoman?

(17)

A.Shehasbadstudyhabits.

B.Shesleepstoomuch.

C.Shewakesuplate.

D.She'sanexcellentstudent.

33.(31)

A.Theicewascutandhandledwiththehelpofsomespecialtools.

B.Theicewastakenfromtheflowingriverwithhooksandcarriedbysledstoicehouses.

C.Theicewascarriedonthefrozensurfaceofthepondorriver.

D.Theicewassawedintoevenblocksbyworkers.

34.(24)

A.Shewilleatinthecampuscanteen.

B.Shewillgohometohavemeals.

C.Shewillcookforherselfatherdorm.

D.Shewilltakesomehome-madefoodtocollege.

35.(40)

36.

【B4】

37.【B3】

38.SectionC

Directions:Inthissection,youwillhearapassagethreetimes.Whenthepassageisreadforthefirsttime,youshouldlistencarefullyforitsgeneralidea.Whenthepassageisreadforthesecondtime,youarerequiredtofillintheblanksnumberedfrom36to43withtheexactwordsyouhavejustheard.Forblanksnumberedfrom44to46youarerequiredtofillinthemissinginformation.Fortheseblanks,youcaneitherusetheexactwordsyouhavejustheardorwritedownthe

WaterprojectsintheUnitedStatesgainedanewprincipleinthe1930's.AndduringthistimethenationsuffereditsworsteconomicdepressionandtheGreatPlainsregionsuffereditsworst(36)______inrecordedhistory.Astheeconomy(37)______intoadeepdepressionand(38)______ratesincreased,thepoliticalclimatefordirectfederalgovernment(39)______inwaterprojectsimproved.PresidentFranklinRooseveh'sfirst100daysinofficebroughta(40)______ofnewlawstodealwiththe(41)______economicdepression.

ThenaturalpatternoftheTennesseeRiverwas(42)______bylargespringflowsthatproduced(43)______floodsandlowsummerflowsthatinhibitednavigation.(44)____________.

Tocounterthesenaturalobstacles,theTennesseeValleyAuthorityActof1933createdtheTennesseeValleyAuthority(TVA),apublicagencywithbroadpowerstopromotedevelopmentintheregion,includingtheauthoritytobuilddamsandreservoirsandtogenerateandsellhydroelectricpower.(45)____________.TheTVAinheritedtheWilsonDam,andbythebeginningoftheSecondWorldWarithadcompletedsixadditionalmultipurposedamswithpowerplantsandlocksfornavigation.InvestmentsindamsandhydropowerfacilitieswithintheTennesseeValleyalsoreceivedhighpriorityduringthewar.(46)____________.TheNIRAalsogavetheUnitedStatesPresidentunprecedentedpowerstoinitiatepublicworks,includingwaterprojects.

39.(19)

A.Heshouldhavereadthebookinsteadofgoingtothemovie.

B.Heshouldhavegonetothemovieinsteadofreadingthebook.

C.Readingthebookwillhelpthemanunderstandthemoviebetter.

D.Shethinksthebookiseasiertounderstandthanthemovie.

40.SectionC

Directions:Inthissection,youwillhearapassagethreetimes.Whenthepassageisreadforthefirsttime,youshouldlistencarefullyforitsgeneralidea.Whenthepassageisreadforthesecondtime,youarerequiredtofillintheblanksnumberedfrom36to43withtheexactwordsyouhavejustheard.Forblanksnumberedfrom44to46youarerequiredtofillinthemissinginformation.Fortheseblanks,youcaneitherusetheexactwordsyouhavejustheardorwritedownthe

Ironically,intheUnitedStates,acountryofimmigrants,prejudiceanddiscriminationcontinuetobeseriousproblems.Therewasoften【B1】______betweeneachestablishedgroupofimmigrantsandeach【B2】______group.Aseachgroupbecamemorefinanciallysuccessful,andmorepowerful,they【B3】______newcomersfromfullparticipationinthesociety.PrejudiceanddiscriminationarepartofAmericanhistory;however,thisprejudicialtreatmentofdifferentgroupsisnowheremoreunjustthanwithblackAmericans.

Blackshad【B4】______disadvantages.Forthemostpart,theycametothelandofopportunityasslavesandtheywerenotfreetokeeptheir【B5】______andculturaltraditions.UnlikemostEuropeanimmigrants,blacksdidnothavetheprotectionofasupportgroup;sometimesslaveowners【B6】______membersofthesamefamily.Theycouldnotmixeasilywiththeestablishedsocietyeitherbecauseoftheirskincolor.Itwasdifficultforthemto【B7】______totheAmericanculture.Evenaftertheybecamefreepeople,theystillexperienceddiscriminationinemployment,housingandeducation.

Untilthetwentiethcentury,the【B8】______oftheblackpopulationlivedinthesouthernpartoftheUnitedStates.ThentherewasapopulationshifttothelargecitiesintheNorth.PrejudiceagainstblacksisoftenassociatedwiththeSouth.Slaverywasmorecommonthereanddiscriminationwasusuallyeasiertosee.

【B9】______.Becausetheirneighborhoodsaresegregated,manyblacksfeelthateducationalopportunitiesarenotadequatefortheirchildren.【B10】______.Naturally,allparentswantthebestpossibleeducationfortheirchildren.【B11】______.Timewillbetherealsolutiontotheproblemofrace.

【B1】

三、4.ReadingComprehension(ReadinginDepth)(20題)41.

Thepassagemainlytellsusthat______.

A.theincreaseofhumanpopulationleadstomoredestructionofthenaturalworld

B.thedecreaseofanimalpopulationresultsfromthedwindlingbiodiversityinthenaturalworld

C.theplanet'sbiodiversityisalsorelatedtothenumberofhouseholds

D.theplanet'sbiodiversityreliesonthebalancedincreaseoflargerandsmallerhouseholds

42.

Theauthors'dictumscanbejustifiedbythefactthat______.

A.DouglasIvesterdefeatedahighest-rankingblackemployeeinasuit

B.DurkJagerwasdismissedowingtohispoorcommunicatingability

C.Geezerscouldn'terasethebrandsstampedinchildhood

D.Geeksaresensibleenoughtomeetdangersandchallenges

43.Thekeytothesequestionsistheemotionalresponsewecallanxiety.Unlikehungerorthirst,whichbuildanddissipate(驅散)intheimmediatepresent,anxietyisthesortoffeelingthatsneaksuponyoufromthedayaftertomorrow.It'ssupposedtokeepyoufromfeelingtoosafe.Withoutit,fewofuswouldsurvive.

Allanimals,especiallythesmall,scurryingkind,appeartofeelanxiety.Humanshavefeltitsincethedaystheysharedtheplanetwithsaber-tootbedtigers.Butweliveinaparticularlyanxiousage.TheinitialshockofSept.11haswornoff,andthefearhaslifted,butmillionsofAmericanscontinuetoshareakindofgeneralizedmassanxiety.ArecentTIME/CNNpollfoundthateightmonthsaftertheevent,nearlytwo-thirdsofAmericansthinkabouttheterrorattacksatleastseveraltimesaweek.Anditdoesn'ttakemuchforalltheoldfearstocomerushingback.Whatwassurprisingabouttherecentdrumbeatofterrorwarningswashowquicklyittriggeredtheanxietysomanyofusthoughtwehadputbehindus.

Thisisoneofthemysteriesofanxiety.Whileitisanormalresponsetophysicaldanger--andcanbeausefultoolforfocusingthemindwhenthere'sadeadlinelooming(或隱或現)--anxietybecomesaproblemwhenitpersiststoolongbeyondtheimmediatethreat.Sometimesthere'sanobviouscause,aswiththeshell-shockedsoldiersofWorldWarIortheterror-scarredciviliansoftheWorldTradeCentercollapse.Othertimes,wedon'tknowwhywecan'tstopworrying.

Thereiscertainlyalotofanxietygoingaround.Anxietydisorder--whichiswhathealthexpertscallanyanxietythatpersiststothepointthatitinterfereswithone'slife--isthemustcommonmentalillnessintheU.S.Initsvariousforms,rangingfromveryspecificphobias(恐懼癥)togeneralizedanxietydisorder,itafflicts19millionAmericans.

Andyet,accordingtoasurveypublishedlastJanuarybyresearchersfromUCLA,lessthan25%ofAmericanswithanxietydisordersreceiveanykindoftreatmentfortheircondition."Ifmentalhealthisthestepchildofthehealth-caresystem,"saysJerilynRoss,presidentoftheAnxietyDisordersAssociationofAmerica,"thenanxietyisthestepchildofthestepchild."

SigmundFreudwasfascinatedwithanxietyandrecognizedearlyonthatthereismorethanonekind.Heidentifiedtwomajorformsofanxiety:onemorebiologicalinnatureandtheothermoredependentonpsychologicalfactors.Unfortunately,hisfollowersweresoobsessedwithhisideasaboutsexdrivesandunresolvedconflictsthatstudiesofthephysicalbasisofanxietylanguished(減退).

Whatcanbethemostsuitabletitleofthispassage?

A.TheOriginofAnxiety.

B.TheHazardsofAnxiety.

C.HealingAnxiety.

D.UnderstandingAnxiety.

44.Whathavemadepeoplecertainofthepurityofbottledwater?

45.SectionA

Directions:Inthissection,thereisashortpassagewith5questionsorincompletestatements.Readthepassagecarefully.Thenanswerthequestionsorcompletethestatementsinthefewestpossiblewords.

Lastyear,ournation'scapitalpassedthemurder-a-daymark,andthenumberofhomicidesisnowupsome50percentfromthatlevel.Morethanhalfofthesekillingsaredrug-related.In1988NewYorkCityhaditsmostviolentyearever,with1896homicides.Manyoftheseinvolveddrugs.SuchhomicidesarealsoaprobleminDetroit,Baltimore,St.Louis,LosAngeles,Phoenixandscoresofothercitieswheredruggangswaragainstoneanotheranduseviolencetospreadtheirdeadlytrade.InBankheadCourts,andAtlantahousingproject,drug-relatedcrimehasreachedthepointwheremailcarriershavehadtodependonincreasedpolicepatrolsatdelivery,time.Whatishappeningaroundusunfoldsavividpicturethatthelinksbetweendruguseandcrimeareclearlyestablished.Accordingtoauthoritativegovernmentalstudy,aroundthree-quartersofcrackandheroinusersclaimtheycommitcrimetofeedtheirhabit.Inconsequence,ahugeriseindrug-relatedcrimeisunderminingtheGovernment'sattemptstocrackclownonlawlessnessinthenation.Itisourprioritytobreakthisdamagingchain.

Foryears,wehaveattackedthesupplysideofthedrugcrisis,tryingtochokeofftheflowofdrugsintoourcountryandstopthenetworksthatdistributethem.Thisstrategyhasfailedmiserably.Nowit'stimetolaunchawholenewoffensive.Wemustcrackdownondrugconsumers.

Lastyear,formerFirstLadyNancyReaganhadanemotionalmeetingwiththeparentsofayoungwomanwhohaddiedinatraincrashthatinvolvedanengineer'suseofdrugs.Afterthatmeeting,Mrs.Reagansaid,"Ifyou'reacasualdruguser,you'reanaccomplicetomurder."

Mary'JaneHatcher,widowofaNewYorkCitydrug-enforcementagentkilledinthedrugwars,echoesthatsentiment."Eventhroughthegrief,"shesaidafterherhusband'sdeathearlierthisyear,"ImustaskwhoreallykilledEverettEmersonfromoursociety?Lookaround.Wemiddle-classsuburbanAmericans,wecasualusers,wedabblers(涉獵著)indrugskeepthemarketindrugsanever-increasingone.Therefore,EverettEmersonHatcherwaskilledbyallofusnicepeople,allofyouwhohearmenowandfitthisdescription,allofyoumustaccepttheblameforthelossofthisgood,gentleman."

Accordingtothepassage,itistypicalofhomicidecriminalsinmanycitiesinUSAtobe______.

46.Purescience,leadingtotheconstructionofamicroscope______.

A.isnotalwaysaspureaswesuppose

B.necessarilyresultsfromappliedscienceandthediscoveryofacell

C.mayleadtoantiscientific,"impure'results

D.necessarilyprecedesappliedscience,leadingtothediscoveryofthecell

47.Onefactwasclearlydemonstratedbytheearlysleepresearchers:onepartofthenightisnotjustlikeanother.Asscientistsbegantocomparetherecordsofvolunteersduringthe1950's,theyobservedthathumansleepfollowsarhythmicschedule.Theynotedthatnotonlywasthisschedulemuchthesameinhealthypersonsofthesameagewithsimilarhabitsbut,fromnighttonighteachindividualhadanEEG(電腦圖)recordalmostasconsistentasasignature.

Sleepandwadefulness,onceconsideredtobethelightanddardofconsciousness,nolongerseemtodiffersosharply.Tosleepdoesnotmeantodrowninanoceanofdarkness.Actually,sleepisnotaunitary(單一的)state;itinvolvesmanyshadesordetreesofdetachmentfromthesurroundingworld.Whilesleepmayfeellikeablanderofdarknesspunctuatedbydreams-atimewhenthemindisasleepnothingcouldbelesstrue.Allnightlongapersondriftsdownandupthroughdifferentlevelsofconsciousness,asifo