专题训练9英语六级练习及答案(1)（近2年）

388/848 大家版收藏级大学英语四六级真题大全 温故而知新，下笔如有神大家网深情奉献！ http://www.TopS 阁明俊审校制作！习题很丰富，梦想易实现英语六级专题训练习题及答案PartIListeningComprehension(20minutes)SectionADirections: Inthissection,youwillhear10shortconversations.Attheendofeachconversation,aquestionwillbeaskedaboutwhatwassaid.Boththeconversationandthequestionwillbespokenonlyonce.Aftereachquestiontherewillbeapause.Duringthepause,youmustreadthefourchoicesmarkedA),B),C)andD),anddecidewhichisthebestanswer.ThenmarkthecorrespondingletterontheAnswerSheetwithasinglelinethroughthecentre.Example:Youwillhear:Youwillread:A)2hours.B)3hours.C)4hours.D)5hours.Fromtheconversationweknowthatthetwoaretalkingaboutsomeworktheywillstartat9o’clockinthemorningandhavetofinishat2intheafternoon.Therefore,D)“5hours”isthecorrectanswer.Youshouldchoose[D]ontheAnswerSheetandmarkitwithasinglelinethroughthecenter.SampleAnswer[A][B][C][D]1. A)Themanattendedtheconcert,butdidn’tlikeit.B)Themanwassorrytomissthefootballgame.C)Themanismoreinterestedinfootballthaninclassicalmusic.D)Themanwassorrythathedidn’tattendtheconcert.2. A)Singingloudly.B)Listeningtomusic.C)Studying.D)Talkingonthephone.3. A)Shecan’treceiveanycalls.B)Shecan’tmakeanycalls.C)Shecandonothingwiththephone.D)Shecan’trepairthephone.4. A)Tomisveryresponsible.B)Tom’swordsaren’treliable.C)WhatTomsaidistrue.D)Tomisnothumorousatall.5. A)Howtouseacamera.B)Howtouseawasher.C)Howtouseakeyboard.D)Howtouseataperecorder.6. A)Theyshouldputthemeetingtoanend.B)Theyshouldholdanothermeetingtodiscussthematter.C)Shewouldliketodiscussanotheritem.D)Shewantstodiscusstheissueagainlater.7. A)HebelievestheBrownshavedoneasensiblething.B)Hedoesn’tthinktheBrownsshouldmovetoanotherplace.C)Hedoesn’tthinktheBrowns’investmentisawisemove.D)HebelievesitisbetterfortheBrownstoinvestlater.8. A)Hemayconvertitanduseitasarestaurant.B)Hemaypullitdownandbuildanewrestaurant.C)Hemayrentitoutforuseasarestaurant.D)Hemaysellittotheownerofarestaurant.9. A)Shedoesn’tlikethewaytheprofessorlectures.B)She’shavingahardtimefollowingtheprofessor’slectures.C)Sheisnotinterestedincourse.D)She’shavingdifficultywiththeheavyreadingassignments.10. A)Heneverkeepshispromises.B)Heiscrazyaboutparties.C)Hehaschangedhismind.D)Heisnotsociable.SectionBCompoundDictation注意:听力理解的B节(SectionB)为复合式听写(CompoundDictation)，题目在卷二上。现在请取出试卷二。Directions: Inthissection,youwillhearapassagetreetimes.Whenthepassageisreadforthefirsttime,youshouldlistencarefullyforitsgeneralidea.Thenlistentothepassageagain.Whenthepassageisreadforthesecondtime,youarerequiredtofillintheblanksnumberedfromS1toS7withtheexactwordsyouhavejustheard.ForblanksnumberedS8toS10youarerequiredtofillinmissinginformation.Youcaneitherusetheexactwordsyouhavejustheardorwritedownthemainpointsinyourownwords.Finally,whenthepassageisreadforthethirdtime,youshouldcheckwhatyouhavewritten.PresidentClintonlatertodayjoins(S1)________presidentsFord,CarterandBushat“thepresident’ssummitforAmerica’sfuture”(S2)________atrecruitingonemillionvolunteertutorstoprovideafter-school,weekendandsummerreadinghelpforuptothreemillionchildren.Mr.ClintonwillaskCongressthiscomingweekfornearlythree(S3)________dollarstofundafive-yearprogramcalled“AmericaReads”.Theprogramwouldfundthe(S4)________effortsof20thousandreading(S5)________anditwouldalsogive(S6)________tohelpparentshelpchildrenreadbythethirdgrade,oraboutageeight.DuringhisSaturdayradio(S7)________,thepresidentexplainedwhytheprogramisimportant.“Weneed‘AmericaReads’andweneeditnow.Studiesshowthatifthefourth-gradersfailtoreadwell,(S8)________.But,40percentofthemstillcan’treadatabasiclevel.”Volunteertutors,whoprovidecommunityserviceinexchangeforcollegefunding,arebeingusedinliteracyandtutoringprograms.(S9)________.ThepresidentsaysmanyofthePhiladelphiasummit’scorporatesponsorswillrecruittutors.(S10)________.PartIIReadingComprehension(35minutes)Directions: Thereare4readingpassagesinthispart.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA),B),C)andD).YoushoulddecideonthebestchoiceandmarkthecorrespondingletterontheAnswerSheetwithasinglelinethroughthecenter.Questions11to15arebasedonthefollowingpassage.Wesometimesthinkhumansareuniquelyvulnerabletoanxiety,butstressseemstoaffecttheimmunedefensesofloweranimalstoo.Inoneexperiment,forexample,behavioralimmunologist(免疫学家)MarkLaudenslager,attheUniversityofDenver,gavemildelectricshocksto24rats.Halftheanimalscouldswitchoffthecurrentbyturningawheelintheirenclosure,whiletheotherhalfcouldmot.Theratsinthetwogroupswerepairedsothateachtimeoneratturnedthewheelitprotectedbothitselfanditshelplesspartnerfromtheshock.Laudenslagerfoundthattheimmuneresponsewasdepressedbelownormalinthehelplessratsbutnotinthosethatcouldturnofftheelectricity.Whathehasdemonstrated,hebelieves,isthatlackofcontroloveranevent,nottheexperienceitself,iswhatweakenstheimmunesystem.Otherresearchersagree.JayWeiss,apsychologistatDukeUniversitySchoolofMedicine,hasshownthatanimalswhoareallowedtocontrolunpleasantstimulidon’tdevelopsleepdisturbancesorchangesinbrainchemistrytypicalofstressedrats.Butiftheanimalsareconfrontedwithsituationstheyhavenocontrolover,theylaterbehavepassivelywhenfacedwithexperiencestheycancontrol.Suchfindingsreinforcepsychologists’suspicionsthattheexperienceorperceptionofhelplessnessisoneofthemostharmfulfactorsindepression.Oneofthemoststartlingexamplesofhowthemindcanaltertheimmuneresponsewasdiscoveredbychance.In1975psychologistRobertAderattheUniversityofRochesterSchoolofMedicineconditioned(使形成条件反射)micetoavoidsaccharin(糖精)bysimultaneouslyfeedingthemthesweetenerandinjectingthemwithadrugthatwhilesuppressingtheirimmunesystemscausedstomachupsets.Associatingthesaccharinwiththestomachpains,themicequicklylearnedtoavoidthesweetener.Inordertoextinguishthisdislikeforthesweetener,Aderreexposedtheanimalstosaccharin,thistimewithoutthedrug,andwasastonishedtofindthatthosemicethathadreceivedthehighestamountsofsweetenerduringtheirearlierconditioningdied.Hecouldonlyspeculatethathehadsosuccessfullyconditionedtheratsthatsaccharinalonenowservedtoweakentheirimmunesystemsenoughtokillthem.11. Laudenslager’sexperimentshowedthattheimmunesystemofthoseratswhocouldturnofftheelectricity________.A)wasstrengthenedB)wasnotaffectedC)wasalteredD)wasweakened12. Accordingtothepassage,theexperienceofhelplessnesscausesratsto________.A)trytocontrolunpleasantstimuliB)turnofftheelectricityC)behavepassivelyincontrollablesituationsD)becomeabnormallysuspicious13. ThereasonwhythemiceinAder’sexperimentavoidedsaccharinwasthat________.A)theydislikeditstasteB)itaffectedtheirimmunesystemsC)itledtostomachpainsD)theyassociateditwithstomachaches14. ThepassagetellsusthatthemostprobablereasonforthedeathofthemiceinAder’sexperimentwasthat________.A)theyhadbeenweakenedpsychologicallybythesaccharinB)thesweetenerwaspoisonoustothemC)theirimmunesystemshadbeenalteredbythemindD)theyhadtakentoomuchsweetenerduringearlierconditioning15. Itcanbeconcludedfromthepassagethattheimmunesystemsofanimals________.A)canbeweakenedbyconditioningB)canbesuppressedbydruginjectionsC)canbeaffectedbyfrequentdosesofsaccharinD)canbealteredbyelectricshocksQuestions16to20arebasedonthefollowingpassage.Thedestructionofournaturalresourcesandcontaminationofourfoodsupplycontinueoccur,largelybecauseoftheextremedifficultyinaffixing(把…固定)legalresponsibilityonthosewhocontinuetotreatourenvironmentwithrecklessabandon(放任).Attemptstopreventpollutionbylegislation,economicincentivesandfriendlypersuasionhavebeennetbylawsuits,personalandindustrialdenialandlongdelays—notonlyinacceptingresponsibility,butmoreimportantly,indoingsomethingaboutit.Itseemsthatonlywhengovernmentdecidesitcanaffordtaxincentivesorproductionsacrificesisthereanyinitiativeforchange.Whereisindustry’sandourrecognitionthatprotectingmankind’sgreattreasureisthesinglemostimportantresponsibility?Ifevertherewillbetimeforenvironmentalhealthprofessionalstocometothefrontlinesandprovideleadershiptosolveenvironmentalproblems,thattimeisnow.Wearebeingasked,and,infact,thepublicisdemandingthatwetakepositiveaction.Itisourresponsibilityasprofessionalsinenvironmentalhealthtomakethedifference.Yes,theecologists,theenvironmentalactivistsandtheconservationistsservetocommunicate,stimulatethinkingandpromotebehavioralchange.However,itisthoseofuswhoarepaidtomakethedecisionstodevelop,improveandenforceenvironmentalstandards,Isubmit,whomustleadthecharge.Wemustrecognizethatenvironmentalhealthissuesdonotstopatcitylimits,countylines,stateorevenfederalboundaries.Wecannolongeraffordtobetunnel-visionedinourapproach.Wemustvisualizeissuesfromeveryperspectivetomaketheobjectivedecisions.Wemustexpressourviewsclearlytopreventmediadistortionandpublicconfusion.Ibelievewehaveathree-partmissionforthepresent.First,wemustcontinuetopressforimprovementsinthequalityoflifethatpeoplecanmakeforthemselves.Second,wemustinvestigateandunderstandthelinkbetweenenvironmentandhealth.Third,wemustbeabletocommunicatetechnicalinformationinaformthatcitizenscanunderstand.Ifwecanaccomplishthesethreegoalsinthisdecade,maybewecanfinallystopenvironmentaldegradation,andnotmerelyholditback.Wewillthenbeabletospendpollutiondollarstrulyonpreventionratherthanonbandages.16. Wecaninferfromthefirsttwoparagraphsthattheindustrialistsdisregardenvironmentalprotectionchieflybecause________.A)theyareunawareoftheconsequencesofwhattheyaredoingB)theyarereluctanttosacrificetheirowneconomicinterestsC)timehasnotyetcomeforthemtoputdueemphasisonitD)itisdifficultforthemtotakeeffectivemeasures17. Themaintasknowfacingecologists,environmentalactivistsandconservationistsis________.A)topreventpollutionbylegislation,economicincentivesandpersuasionB)toarousepublicawarenessoftheimportanceofenvironmentalprotectionC)totakeradicalmeasurestocontrolenvironmentalpollutionD)toimprovethequalityoflifebyenforcingenvironmentalstandards18. Theword“tunnel-visioned(Line2,Para.4)mostprobablymeans“________”.A)narrow-mindedB)blindtothefactsC)short-sightedD)abletoseeonlyoneaspect19. Whichofthefollowing,accordingtotheauthor,shouldplaytheleadingroleinthesolutionofenvironmentalproblems?A)Legislationandgovernmentintervention.B)Theindustry’sunderstandingandsupport.C)Theeffortsofenvironmentalhealthprofessionals.D)Thecooperationofecologists,environmentalactivistsandconservationists.20. Whichofthefollowingistrueaccordingtothelastparagraph?A)Effortsshouldbeexertedonpollutionpreventioninsteadofonremedialmeasures.B)Moremoneyshouldbespentinordertostoppollution.C)Ordinarycitizenshavenoaccesstotechnicalinformationonpollution.D)Environmentaldegradationwillbestoppedbytheendofthisdecade.Questions21to25arebasedonthefollowingpassage.Britishuniversities,groaningundertheburdenofahugeincreaseinstudentnumbers,arewarningthatthetraditionofafreeeducationisatrisk.Theuniversitieshavethreatenedtoimposeanadmissionfeeonstudentstoplugagapinrevenueifthegovernmentdoesnotacttoimprovetheirfinancesandscrapsomepublicspendingcutbacks.Thegovernmentrespondedtotheuniversities’threatbysettingupthemostfundamentalreviewofhighereducationforageneration,underanon-partytroubleshooter(调停人)，SirRonDearing.Oneinthreeschool-leaversentershighereducation,fivetimesthenumberwhenthelastreviewtookplacethirtyyearsago.Everyoneagreesasystemthatisfeelingthestrainafterrapidexpansionneedsalotmoremoney-butthereislittlehopeofgettingitfromthetaxpayerandnotmuchscopeforattractingmorefinancefrombusiness.Mostcollegesbelievestudentsshouldcontributetotuitioncosts,somethingthatiscommonelsewhereintheworldbutwouldmarkarevolutionarychangeinBritain.Universitieswantthegovernmenttointroducealoanschemefortuitionfeesandhavesuspendedtheirownthreatenedactionfornow.TheyawaitDearing’sadvice,hopingitwillnotbetoolate-somearealreadyreportedtobeinfinancialdifficulty.Asthecenturynearsitsend,thewholeconceptofwhatauniversityshouldbeisunderthemicroscope.Expertsponderhowmuchtheycanusecomputersinsteadofclassrooms,talkoftheneedforlifelonglearningandrefertostudentsas“consumers.”TheConfederation(联盟)ofBritishIndustry,thekeyemployers’organization,wantsevenmoreexpansioninhighereducationtohelpfightcompetitiononworldmarketsfromboomingAsianeconomies.Butthegovernmenthasdoubtsaboutmoreexpansion.TheTimesnewspaperegress,complainingthatqualityhassufferedasstudentnumberssoared,withclosetutorialsupervisiongivingwayto“massproductionmethodsmoretypicalofEuropeanuniversities.”21. ThechiefconcernofBritishuniversitiesis________.A)howtotackletheirpresentfinancialdifficultyB)howtoexpandtheenrollmenttomeettheneedsofenterprisesC)howtoimprovetheireducationaltechnologyD)howtoputanendtothecurrenttendencyofqualitydeterioration22. WecanlearnfromthepassagethatinBritain________.A)thegovernmentpaysdearlyforitsfinancialpolicyB)universitiesaremainlyfundedbybusinessesC)highereducationisprovidedfreeofchargeD)studentsarereadytoacceptloanschemesfortuition23. WhatwasthepercentageofhighschoolgraduatesadmittedtouniversitiesinBritainthirtyyearsago?A)20%orso.B)About15%.C)Above30%.D)Below10%.24. Itcanbeinferredfromthepassagethat________.A)theBritishgovernmentwillbeforcedtoincreaseitsspendingonhighereducationB)BritishemployersdemandanexpansioninenrollmentattheexpenseofqualityC)thebestwayoutforBritishuniversitiesistofollowtheirEuropeancounterpartsD)Britishstudentswillprobablyhavetopayfortheirhighereducationinthenearfuture25. WhichofthefollowingistheviewpointoftheTimesnewspaper?A)ExpansioninenrollmentisboundtoaffectthequalityofBritishhighereducation.B)Britishuniversitiesshouldexpandtheirenrollmenttomeettheneedsofindustry.C)Europeanuniversitiescanbettermeettheneedsofthemodernworld.D)Britishuniversitiesshouldhelpfightcompetitiononworldmarkets.Questions26to30arebasedonthefollowingpassage:There’ssimplepremisebehindwhatLarryMyersdoesforaliving:Ifyoucansmellit,youcanfindit.MyersisthefounderofAuburnUniversity’sInstituteforBiologicalDetectionSystems,themaintaskofwhichistochasetheultimateindetectiondevices—anartificialnose.Fornow,thesubjectoftheirresearchislittlemorethanastackofgleamingchipstuckedawayinalaboratorydrawer.Butsoon,suchatoolcouldbehangingfromthebeltsofpolice,arson(纵火)investigatorsandfood-safetyinspectors.Thetechnologythattheyareworkinginwouldsuggestquitereasonablythat,withinthreetofiveyears,we’llhavesomeworkablesensorsreadytouse.Suchdevicesmightfindwideuseinplacesthatattractterrorists.Policecoulddetectdrugs,bodiesandbombshiddenincars,whilefoodinspectorscouldeasilytestfoodandwaterforcontamination.Theimplicationsforrevolutionaryadvancesinpublicsafetyandthefoodindustryareastonishing.Butso,too,arethepossibilitiesforabuse;Suchmachinescoulddeterminewhetherawomanisovulating(排卵),withoutaphysicalexam-orevenherknowledge.OneofthetraditionalprotectorsofAmericanlibertyisthatishasbeenimpossibletosearcheveryone.That’sgettingnottobethecase.ArtificialbiosensorscreatedatAuburnworktotallydifferentlyfromanythingeverseenbefore.AromaScan,forexample,isadesktopmachinebasedonabankofchipssensitivetospecificchemicalsthatevaporateintotheair.Asairissuckedintothemachine,chemicalspassoverthesensorsurfacesandproducechangesintheelectricalcurrentflowingthroughthem.Thosecurrentchangesareloggedintoacomputerthatsortsoutodorsbasedontheirelectricalsignatures.Myerssaystheyexpecttoloadasinglefingernail-sizechipwiththousandsofodorreceptors(感受器)，enoughtocreateasensorthat’snearlyassensitiveasadog’snose.26. Whichofthefollowingiswithinthecapacityoftheartificialnosebeingdeveloped?A)Performingphysicalexaminations.B)Locatingplaceswhichattractterrorists.C)Detectingdrugsandwatercontamination.D)Monitoringfoodprocessing.27. Apotentialproblemwhichmightbecausedbytheuseofanartificialnoseis________.A)negligenceofpublicsafetyB)anabuseofpersonalfreedomC)ahazardtophysicalhealthD)athreattoindividualprivacy28. Theword“logged“(Line5,Para.7)mostprobablymeans”________“.A)presetB)enteredC)processedD)simulated29. Toproduceartificialnosesforpracticaluse,itisessential________.A)todevelopmicrochipswiththousandsofodorreceptorsB)toinventchipssensitivetovariouschemicalsC)todesignacomputerprogramtosortoutsmellsD)tofindchemicalsthatcanaltertheelectricalcurrentpassingthrough30. Theauthor’sattitudetowardsLarryMyers’worksis________.A)cautiousB)approvingC)suspiciousD)overenthusiasticPartIIIVocabulary(20minutes)Directions: Thereare30incompletesentencesinthispart.ForeachsentencetherearefourchoicesmarkedA),B),C)andD).ChoosetheONEthatbestcompletesthesentence.ThenmarkthecorrespondingletterontheAnswerSheetwithasinglelinethroughthecentre.31. Whenpeopleareaskedwhatkindofhousingtheyneedorwant,thequestion________avarietyofanswers.A)defiesB)magnifiesC)mediatesD)evokes32. Ifyouwanttosetupacompany,youmust________withtheregulationslaiddownbytheauthorities.A)complyB)adhereC)confirmD)accord33. Althoughthereareoccasionaloutbreaksofgunfire,wecanreportthattherebellionhasinthemainbeen________.A)canceledB)destroyedC)suppressedD)restrained34. Sincethetwocountriescouldn’t________theirdifferences,theydecidedtostoptheirnegotiations.A)rectifyB)obligeC)reconcileD)obscure35. Thepresidentialcandidate________hispositionbywinningseveralprimaryelections.A)enforcedB)enrichedC)intensifiedD)consolidated36. Thefuelofthecontinentalmissileissupposedtobe________bythisdevice.A)ignitedB)lightedC)firedD)inspired37. Mikejustdiscoveredthathispassporthad________threemonthsago.A)abolishedB)expiredC)amendedD)constrained38. Franklyspeaking,yourarticleisverygoodexceptforsome________mistakesingrammar.A)obscureB)glaringC)trivialD)rare39. Therewasoncean________ideathattheearthwasflatandmotionless.A)absurdB)intrinsicC)eternalD)offensive40. Certainspeciesdisappearedorbecame________asnewformsarosethatwerebetteradaptedtotheEarth’schangingenvironment.A)feebleB)extinctC)massiveD)extinguished41. His________directionsconfusedus;wedidnotknowwhichofthetworoadstotake.A)ambiguousB)complicatedC)arbitraryD)intricate42. FranklinD.RooseveltarguedthatthedepressionstemmedfromtheAmericaneconomy’s________flaws.A)underliningB)vulnerableC)vulgarD)underlying43. Somestudiesconfirmedthatthiskindofeyediseasewas________intropicalcountries.A)prospectiveB)prevalentC)provocativeD)perpetual44. Iamafraidthatyouhavetoalteryour________viewsinlightofthetragicnewsthathasjustarrived.A)indifferentB)distressingC)optimisticD)pessimistic45. Althoughhehashadnoformaleducation,heisoneofthe________businessmeninthecompany.A)shrewdestB)sternestC)nastiestD)alertest46. Stopshouting!Ican’thearthefootball________.A)judgmentB)interpretationC)commentaryD)explanation47. TheculturesofChinaandJapanharesharedmanyfeatures,buteachhasusedthemaccordingtoitsnational________.A)engagementB)destinyC)capacityD)temperament48. Everymemberofsocietyhastomakea________tostruggleforthefreedomofthecountry.A)pledgeB)warrantyC)resolveD)guarantee49. Iwasdeeplyimpressedbythehostess’________andenjoyedthedinnerpartyverymuch.A)hostilityB)indignationC)hospitalityD)humanity50. Davidtendstofeeluselessandunwantedinasocietythatgivessomuch________tothosewhocompetewell.A)prestigeB)regimeC)superiorityD)legislation51. Asyouhaveseen,thevaluesofanation’scurrencyisa________ofitseconomy.A)reactionB)refectionC)responseD)revelation52. IntheSpringExportCommoditiesFairthe________offinechinaattractedmuchattentionofcustomersfromallovertheworld.A)successionB)arrayC)stringD)procession53. Weshouldmakeaclear________betweenthetwoscientifictermsforthepurposeofourdiscussion.A)separationB)discriminationC)deviationD)distinction54. TheterroristsmighthaveplantedabombonaplaneinAthens,setto________whenitarrivedinNewYork.A)gooffB)getoffC)comeoffD)carryoff55. Weshouldbeabletodothejobforyouquickly,________yougiveusallthenecessaryinformation.A)incaseB)providedthatC)orelseD)asif56. Theyoungerperson’sattractiontostereoscannotbeexplainedonly________familiaritywithtechnology.A)inquestofB)bymeansofC)intermsofD)byvirtueof57. Attemptstopersuadehertostayaftershefeltinsultedwere________.A)innowayB)onthecontraryC)atalossD)ofnoavail58. Bysigningtheleasewemadea________topayarentof$150aweek.A)conceptionB)commissionC)commitmentD)confinement59. Topreventfloodinginwinterthewaterflowingfromthedamisconstantly________byacomputer.A)gradedB)managedC)conductedD)monitored60. Manypeoplethinkofdesertsas________regions,butnumerousspeciesofplantsandanimalshaveadaptedtolifethere.A)virginB)barrenC)voidD)wretchedPartIVCloze(15minutes)Directions: Thereare20blanksinthefollowingpassage.ForeachblanktherearefourchoicesmarkedA),B),C)andD)ontherightsideofthepaper.YoushouldchoosetheONEthatbestfitsintothepassage.ThenmarkthecorrespondingletterontheAnswerSheetwithasinglelinethroughthecentre.Mostpeoplewhotravellongdistancescomplainofjetlag(喷气飞行时差反应).Jetlagmakesbusinesstravelerslessproductiveandmoreprone__61__makingmistakes.Itisactuallycausedby__62__ofyour“bodyclock”-asmallclusterofbraincellsthatcontrolsthetimingofbiological__63__.Thebodyclockisdesignedfora__64__rhythmofdaylightanddarkness,sothatitisthrownoutofbalancewhenit__65__daylightanddarknessatthewrongtimesinanewtimezone.The__66__ofjetlagoftenpersistfordays__67__theinternalbodyclockslowlyadjuststothenewtimezoneNowanewanti-jetlagsystemis__68__thatisbasedonproven__69__pioneeringscientificresearch.Dr.MartinMoore-Edehas__70__apracticalstrategytoadjustthebodyclockmuchsoonertothenewtimezone__71__controlledexposuretobrightlight,Thetimezoneshiftiseasytoaccomplishandeliminates__72__ofthediscomfortofjetlag.Asuccessfultimezoneshiftdependsonknowingtheexacttimetoeither__73__oravoidbrightlight.Exposuretolightatthewrongtimecanactuallymakejetlagworse.Theproperschedule__74__lightexposuredependsagreatdealon__75__travelplans.Dataonaspecificflightitinerary(旅行路线)andtheindividual’ssleep__76__areusedtoproduceaTripGuidewith__77__onexactlywhentobeexposedtobrightlight.WhentheTripGuidecalls__78__brightlightyoushouldspendtimeoutdoorsifpossible.Ifitisdarkout-side,ortheweatherisbad,__79__youareonanaeroplane,youcanuseaspeciallightdevicetoprovidethenecessarylight__80__forarangeofactivitiessuchasreading,watchingTVorworking.61. A)forB)fromC)toD)of62. A)ruptureB)corruptionC)eruptionD)disruption63. A)actionsB)functionsC)reflectionD)behavior64. A)regularB)formalC)continualD)circular65. A)retainsB)encountersC)possessesD)experiences66. A)diseasesB)symptomsC)signsD)defects67. A)whileB)whereasC)ifD)although68. A)adaptableB)approachableC)availableD)agreeable69. A)broadB)inclusiveC)tentativeD)extensive70. A)devisedB)recognizedC)scrutinizedD)visualized71. A)atB)throughC)inD)as72. A)mostB)leastC)littleD)more73. A)attainB)shedC)retrieveD)seek74. A)onB)withC)forD)in75. A)uniqueB)specificC)complicatedD)peculiar76. A)normB)modeC)patternD)style77. A)directoriesB)instructionsC)specificationsD)commentaries78. A)offB)onC)forD)up79. A)orB)andC)butD)while80. A)agitationB)spurC)accelerationD)stimulus试卷二PartVIWriting(30minutes)Directions: Forthispart,youareallowedthirtyminutestowriteacompositiononthetopic:ReadingSelectivelyOrExtensively?Youshouldwriteatleast120words,andbaseyoucompositionontheoutline(giveninChinese)below:1. 有人认为读书要有选择。2. 有人认为应当博览群书。3. 我的看法。390/848 大家版收藏级大学英语四六级真题大全 温故而知新，下笔如有神大家网深情奉献！ http://www.TopS 阁明俊审校制作！习题很丰富，梦想易实现1999年6月六级参考答案PartIListeningComprehension1. C2. B3. A4. B5. A6. D7. C8. A9. D10. CS1. formerS2. aimedS3. billionS4. coordinationS5. specialistsS6. grantsS7. addressS8. Theyarelikelytodropoffschool,andle