2022年安徽省池州市大学英语6级大学英语六级测试卷(含答案)

2022年安徽省池州市大学英语6级大学英语六级测试卷(含答案)学校:________班级:________姓名:________考号:________

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

Moravec'sideaofroboticimmortalityisapprovedbytheauthor.

A.YB.NC.NG

2.

Nonewerefullyawareoftheunsafeconditionsforloadingammunitionuntiltheexplosionoccurred.

A.YB.NC.NG

3.

Learntobemorecreativeisjustamatteroffocusingontheendlessflowofideasyouproduce,andlearningto______thenewthat'swithinyou.

4.

Universitiesandcollegesoffercertificationprogramsorstudiesto______.

A.enablestudentstobecompetitiveinWebsitesearchoptimization

B.attractWeb-basedcompaniestosendemployeesbacktoschool

C.maximizerelationshipsbetweenthemandWeb-basedcompanies

D.boostreputation,extendinfluenceandmaximizerevenue

5.

Itisadvocatedthatyoushouldunderstandthesituationsbeforeyoumake______.

6.

Neverisonesupposedtodoexteriorpaintingwhen,thetemperatureisbelow50degreesF.

A.YB.NC.NG

7.

AccordingtoMichaelTwery，whydon'tthosepeoplewithsnoringproblemsgotoseetheirdoctor?

A.Becausetheyareafraidtobelaughedatbyothers.

B.Becausetheyarenotawareoftheproblemsduetotheirslowprogress.

C.Becausetheyaretoobusytogotohospital.

D.Becausetheyareunwillingtotalkaboutsnoringproblems，

8.

Theleavesofevergreenscansurvivethewinterbecausetheyare______andfluidinsidetheircellscontainscold-resistingsubstances.

9.

Twotraditionalegggamesarethe______and______.

10.

Researcher'sstudiesindicatedthatthecoupleswhoownedapetcan______.

11.

MarkTwainbecamethemostoutstandingwriterofhistimebecauseheknewhispeopleandtheMississippiRiververywell,andheinheritedfromhismother______.

12.

Ourabilitytothinkisimprovedwhen______.

A.weobservetheworldmorewisely

B.ourabilitytowriteisimproved

C.whatwespeakbecomesconvincing

D.wewriteonpaperinsteadofoncomputer

13.

People'semotionsinthephysicalworldwillnotbesubstitutedby______.

14.Fromthesecondparagraphweknowthat______.

A.toomuchphysicalillnesscanleadtoemotionalstress

B.physicalstressfromexercisecancauseirritablecolon

C.physicalexercisecandealwithmentalstress

D.emotionalactivityandphysicalactivitybothcancauseseriousstress

15.BestTimeKeeper

WaldoWilcoxknewtherewastroublethemomenthesawthemauled(受伤的)deercarcass,notfarfromoneofthemeadowswherehiscattlegrazed.Hisdogs,DinkandShortie,sensedittoo—mountainlion.Hegrabbedhispistolandaropefromhistruck,andsaid,"let'sgethim".Thenheheadedupthemountainside,hishoundsracingfarahead.

Wilcoxmovedinlongstridesuptherockygrade.Still,ittooksometimebeforehetoppedthesummit.Thebigcatwasnot50yardsinfrontofhim,itsfangs(尖牙)bared,corneredbythedogsonamassivesandstonebluff.

Wilcoxgrippedhisgun.Hehopedtotakethemountainlionaliveandsellittoazoo.He'ddonethatbeforeandmadeatidyprofit.Wilcoxtookquickaim,hispistolcracked,andtherewasasuddensilenceastheanimalfelllimptotheground.

Itwasn'tuntilthereddusthadsettledandWilcox'spulsehadslowedthathegazedaround.Whathesawstunnedhim.Highontheblufflayanarcheological(考古学的)treasuretrove(珍藏物)—largepiecesofpottery,stonesheltersthatoncehousedwholefamilies,anddomedstructuresthathadheldwildgrainsharvestedcenturiesbeforeEuropeanssetfootinNorthAmerica.

Wilcoxmadehisdiscoveryonthebluffalmost20yearsago—butitwasnotthefirsttimehehadfoundrelicsonhisland.Since1951,whenhisfatherboughtthehigh-valleyRangeCreekranch,ayearhadseldompassedinwhichWilcoxdidnotcomeuponsomespotofarcheologicalinterest.Occasionallyhestumbledacrossburialplots.

NativeAmericanCulture

Fornearlyhalfacentury,hekeptquietabouttheriches,tellinghardlyanyoneoutsidehisimmediatefamilywhatwashiddenintheisolatedvalley160milessoutheastofSaltLakeCity.Whenhediscoveredanewsite,Wilcoxwouldnoteitslocation—thenjustletthingsbe.

NowthesecretofRangeCreekisfinallyout.Fouryearsago,forcedbytimetogiveupranching,Wilcox,75,soldhisbeef-cattlepropertyinadealthatultimatelyputthelandinstatehands.ThankstoWilcox'ssilence,the4200-acreranchisonehuge,untouchedarcheologicalsite.Today,scientistsfromUtah'sDivisionofStateHistoryandtheUniversityofUtaharebusilycataloguingmagnificent,previouslyunknownruinsontheproperty.

WhatthescientistsarelearningatRangeCreekhasalreadybeguntoshedlightononeofthegreatestmysteriesofNativeAmericanhistory—thefateoftheFremontculture,whichhadthrivedinUtahforalmost1000years,thenvanishedvirtuallyover-nightinthe1300s.

TheveryexistenceoftheFremontdidnotcometolightuntilthelate1920s,whenaHarvardUniversityexpeditiondiscoveredevidenceofanancientpeoplewhosettledalongtheFremontRiverinsouthernUtah.Farmersandhunter-gathererswhoarrivedintheregionataboutA.D.400,theFremontlivedinone-roomhomesdugintotheearthandfinishedoffwithstacked-stonewallsandroofsmadeofreedsandmud.CarbondatingofcorncobsfoundontheWilcoxranchhintedthatRangeCreekwasbuzzingwithactivityfromroughlyA.D.900to1100.

Butrightaroundthebeginningofthe14thcentury,somegreatshiftoccurred.Thedrawings,potteryandstructuresparticulartotheFremontcultureceasedtobemade—anywhere.SomeexpertsguessthatotherpeoplespushedOuttheFremont.OthersspeculatethatsomeclimaticeventforcedtheFremonttomovesouth,wheretheymayhaveintegratedwithothertribes.

ALivingMonument

"Intermsofhistoryandarcheologicalstudy,RangeCreekisessentialtothestate,"explainsformergovernorOleneS.Walker."Itgivesusaviewintoaperiodforwhichwehavenowrittenhistory."SheisspeakingprimarilyabouttheFremontculture,butAWorldThatTimeForgot.Eventoday,thevalleyresemblesaworldthattimeforgot.<br

A.YB.NC.NG

16.PartⅡReadingComprehension(SkimmingandScanning)

Directions:Inthispart,youwillhave15minutestogooverthepassagequicklyandanswerthequestionsonAnswerSheet1.Forquestions1-7,choosethebestanswerfromthefourchoicesmarked[A],[B],[C]and[D].Forquestions8-10,completethesentenceswiththeinformationgiveninthepassage.

CableTelevision

Inthe1940s,therewerefournetworksintheUnitedStates.Becauseofthefrequenciesallottedtotelevision,thesignalscouldonlybereceivedina"lineofsight"fromthetransmittingantenna.Peoplelivinginremoteareascouldn'tseetheprogramsthatwerealreadybecominganimportantpartofU.S.culture.

In1948,peoplelivinginremotevalleysinPennsylvaniasolvedtheirreceptionproblemsbyputtingantennasonhillsandrunningcablestotheirhouses.Thesedays,thesametechnologyonceusedbyremotevillagesandselectcitiesallowsviewersalloverthecountrytoaccessawidevarietyofprogramsandchannelsthatmeettheirindividualneedsanddesires.Bytheearly1990s,cabletelevisionhadreachednearlyhalfthehomesintheUnitedStates.

Today,U.S.cablesystemsdeliverhundredsofchannelstosome60millionhomes,whilealsoprovidingagrowingnumberofpeoplewithhigh-speedInternetaccess.Somecablesystemsevenletyoumaketelephonecallsandreceivenewprogrammingtechnologies!

Theearliestcablesystemswere,ineffect,strategicallyplacedantennaswithverylongcablesconnectingthemtosubscribers'televisionsets.BecausethesignalfromtheantennabecameWeakerasittraveledthroughthelengthofcable,cableprovidershadtoinsertamplifiersatregularintervalstoboostthestrengthofthesignalandmakeitacceptableforviewing.

"Inacablesystem,thesignalmighthavegonethrough30or40amplifiersbeforereachingyourhouse,oneevery1,000feetorso,"Wallsays,"Witheachamplifier,youwouldgetnoiseanddistortion.Plus,ifoneoftheamplifiersfailed,youlostthepicture.Cablegotareputationfornothavingthebestqualitypictureandfornotbeingreliable."Inthelate1970s,cabletelevisionwouldfindasolutiontotheamplifierproblem.Bythen,theyhadalsodevelopedtechnologythatallowedthemtoaddmoreprogrammingtocableservice.

Intheearly1950s,cablesystemsbeganexperimentingwithwaystousemicrowavetransmittingandreceivingtowerstocapturethesignalsfromdistantstations.Insomecases,thismadetelevisionavailabletopeoplewholivedoutsidetherangeofstandardbroadcasts.Inothercases,especiallyinthenortheasternUnitedStates,itmeantthatcablecustomersmighthaveaccesstoseveralbroadcaststationsofthesamenetwork.Forthefirsttime,cablewasusedtoenrichtelevisionviewing,notjustmakeordinaryviewingpossible.

Theadditionofcommunityantennatelevisionstationsandthespreadofcablesystemsultimatelyledmanufacturerstoaddaswitchtomostnewtelevisionsets.Peoplecouldsettheirtelevisionstotunetochannels,ortheycouldsetthemfortheplanusedbymostcablesystems.

Inbothtuningsystems,eachtelevisionstationwasgivena6-megahertz(MHz)sliceoftheradiospectrum.TheFCC(FederalCommunicationsCommission)hadoriginallydevotedpartsoftheveryhighfrequency(VHF)spectrumto12televisionchannels.Thechannelsweren'tputintoasingleblockoffrequencies,butwereinsteadbrokenintotwogroupstoavoidinterferingwithexistingservices.

Later,whenthegrowingpopularityoftelevisionnecessitatedadditionalchannels,theFCCallocatedfrequenciesintheultra-highfrequency(UHF)portionofthespectrum.Theyestablishedchannels14to

A.a"lineofsight"

B.transmittingantenna

C.frequenciesallottedtotelevision

D.puttingantennasonhillsandrunningcablestohouses

17.

Theword"hammock"inthispassagemeansasuspensioncagewhichcanbeswungtoandfrointheair.

A.YB.NC.NG

18.

UserswithIADoftenfinditdifficulttogetalongintheirwork.

A.YB.NC.NG

19.

Nutritionalscience______threemajorquestionsaboutcalcium.

20.Whatdowelearnabouttheauthorfromthefirsttwoparagraphs?

A.Hewasforcedtoleavehomethreeyearsago.

B.Hesoldthehousetopayforhisworldtour.

C.Helearnedalotfromtravelingaroundtheworld.

D.HegotaPh.DinGeographyinthreeandahalfyears.

二、3.ListeningComprehension(20题)21.(39)

22.(34)

A.TheoneinAlaska

B.TheoneinAlabama.

C.TheoneinSanFrancisco

D.TheoneinLosAngeles.

23.(45)

24.(13)

A.Theclinic.

B.Thebank.

C.Thepolicestation.

D.Thepostoffice.

25.听力原文：Overthepastdecade,theenvironmentalmovementhasexplodedontothemindsofmainstreamconsumers,afactnotlostonmarketersandadvertisers.Greenadvertisingstartedinthemid-1980swhenissuesoftheenvironmentmuscledtheirwaytotheforefrontofmarketing.Advertiserssawtheconsumerdesireforenvironmentally-safeproductsandtriedtomeetthedemandasquicklyaspossible.Notsurprisingly,thisfastwavesufferedfromroughandpoorly-conceivedmarketingefforts.Manyadvertisersembracedagenuineconcernfortheenvironment.Butconsumersrealizedthatsomecompaniesmadefalseclaimsandexploitedthemovement,usingsuchambiguoustermsas"environmentallyfriendly"and"green".Consumersgrewwaryofenvironmentalappeals,andadvertisersreactedbyreducingitsemphasis.In1992theFederalTradeCommissionestablishedguidelinesforgreenmarketing,followedshortlybystategovernments.Californiapassedparticularlystrictlaws,settingdefinitionsfortermslike"ozonefriendly","biodegradable",and"recycled".Accordingtothestate'scourt,"Californiaseekstoguardagainstpotentiallyinaccurateclaimsorecologicalboostaboutproductswithminimalenvironmentalattributes."Texas,Massachusetts,Minnesota,Tennessee,Connecticut,andWashingtonsoonfollowedtheGoldenState'slead.Therigidregulationshaveleftanumberofadvertisersconfusedandfrustrated,althoughsomefeelthatenvironmentalclaimshavealreadypeakedandareontheirwayout.Somebelievethatwe'venowenteredgreenadvertising'sthirdwave,duringwhichenvironmentalconcernispartofthemainstream,too.

(33)

A.Theywereexpensive.

B.Noonebelievesthem.

C.Theywereunsuccessful.

D.Theywereoftendeceptive.

26.【B6】

27.

【B11】

28.(31)

A.England'sfootballeroftheyear.

B.asoccercoachinWestGermany.

C.amedallistforhissportsmanship.

D.amemberoftheOrderoftheBritishEmpire.

29.

【B9】

30.(18)

A.Twomenwerekilledandfourwomenandtwochildrenweresurvived.

B.Twomenandfourwomenandtwochildrenweresurvived.

C.Fourwomenandtwochildrenwerekilled.

D.Twomen,fourwomenandtwochildrenwerekilled.

31.(26)

A.Spanishconversation.

B.Carmaintenance.

C.Pottery.

D.Keep-fit.

32.听力原文：Throughouthistorymanhaschangedhisphysicalenvironmentinordertoimprovehiswayoflife.

Withthetoolsoftechnologyhehasalteredmanyphysicalfeaturesoftheearth.Hehastransformedwoodlandsintofarmland,andmadelakesandreservoirsoutofriversforirrigationpurposesorhydroelectricpower.Manhasalsomodifiedthefaceoftheearthbydrainingmarshesandcuttingthroughmountainstobuildroadsandrailways.

However,man'schangestothephysicalenvironmenthavenotalwayshadbeneficialresults.Today,pollutionoftheairandwaterisanincreasingdangertothehealthoftheplanet.Eachdaythousandsoftonsofgasescomeoutoftheexhaustsofmotorvehicles;smokefromfactoriespollutestheairofindustrializedareasandthesurroundingareasofcountryside.Theairincitiesisbecomingincreasinglyunhealthy.

Thepollutionofwaterisequallyharmful.Inthesea,pollutionfromoilisincreasingandiskillingenormousnumbersofalgae(averysimpleplantwithoutstemsorleavesthatgrowsinornearwater),fishandbirds.Thewholeecologicalbalanceoftheseaisbeingchanged.Thesameproblemexistsinrivers,Industrialwasteshavealreadymademanyriverslifeless.

Conservationistsbelievethatitisnownecessaryformantolimitthegrowthoftechnologyinordertosurviveonearth.

(30)

A.Betteringhiswayoflife.

B.Improvinghissurroundings.

C.Modifyingthefaceoftheplanet.

D.Alteringthephysicalfeaturesoftheearth.

33.(14)

A.Inthesubway.

B.Inthemoviehouse.

C.Inlineoutside.

D.Somewhereelse.

34.【B3】

35.SectionB

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

听力原文：Howdoyoupreserveyourfood?Let'stakeadiscussion.Someonewillsay,putitintherefrigerator.Andaskaquestion,beforeweinventedtherefrigerator,inwhichwaycouldwekeepthefoodlongerorwesayifwedidn'thavetherefrigerator,inwhatcontainerorsomeplacetokeepthefood?Sothinkaboutitmoreanddeeply.

Thesearchforwaysofpreservingfoodsisnotnew.Earlymanlearnedthathecouldmakefoodslastbydryingthem.(26)TheIndians,forinstance,hungdeermeatinthesun.Thegreatestadvancebeganin1800when(27)aFrenchmandiscoveredthathecouldpreservecertainfoodsbysealingtheminjarsandkeepingtheairfromthem.Theprocesswasthebeginningofthevastcanningindustry,whichbringsusavarietyoffoodsinallseasons.Fruitsareoftenpreservedbydrying.Theuseofchemicalsisanothermethod,andsomefoodsarecookedwithsugar.Butrecently,themethodofpreservingfoodbyfreezinghasgrowntremendously,andmorefoodsthaneverbeforearenowbeingprocessedbyfreezing.

Andnowadaysweusuallykeepitintherefrigerator,andevendidn'tknowtheotherorformermethods.Maybewecouldtrysomeothernewwaystohandlethisproblem.Withthedevelopingsociety,andthedevelopingtechnology,thebetterwethinkof,thebetterlifeweget.(28)Foodkeepingissoimportantinourdallylifeandeveryoneneedstoeat.Howtodealwiththeleftone?Justthrowitawayiswastingandmaybeyouwanttoeatsomeday.Soweshouldthinkthecrediblewaytohandleit.

(27)

A.Theyhungmeatinthesun.

B.Theycookedmeatwithsalt.

C.Theykeptmeatunderground.

D.Theypreservedmeatwithice.

36.SectionC

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

Aroundtheworldyoungpeoplearespending【B1】______sumsofmoneytolistentorockmusic.ForbesMagazine【B2】______thatatleastfiftyrockstarshave【B3】______ofbetweentwomillionandsixmilliondollars【B4】______year.

"Itdoesn'tmakesense,"saysJohnnyMathis,oneofthe【B5】______musicmillionaires,whomadeamilliondollarsayearwhenhewasmostpopular,inthe1950s."Performersaren't【B6】______thiskindofmoney.Infact,nobodyis."

Buttherockstars'admirersseemto【B7】______.Thosewholoverockmusicspendabouttwobilliondollarsayearforrecords.Theypay150milliontoseerockstarsinperson.

Some【B8】______thinkthecustomersarebuyingmorethanmusic.Accordingtoonetheory,【B9】______Thereisnogulfbetweentheaudienceandtheperformer.Everyboyandgirlintheaudiencethinks,"Icouldsinglikethat."【B10】______.Youngpeoplearegladtopaytoworshiparockstarbecauseitisawayofworshippingthemselves.

Luckisakeywordforexplainingthesuccessofmany.In1972oneoftheluckiestwasDonMcLean,whowroteandsang"AmericanPie."McLeanearnedmorethanamilliondollarsfromrecordingsof"AmericanPie."Then,too,【B11】______.

【B1】

37.SectionA

Directions:Inthissection,youwillhear8shortconversationsand2longconversations.Attheendofeachconversation,oneormorequestionswillbeaskedaboutwhatwassaid.Boththeconversationandthequestionswillbespokenonlyonce.Aftereachquestiontherewillbeapause.Duringthepause,youmustreadthefourchoicesmarkedA,B,CandD,anddecidewhichisthebestanswer.

(12)

A.Thelatestnurseisthebestone.

B.Thelatestnursewasillfortwotimeslastmonth.

C.Thelatestnurseistheworstone.

D.Inthepastfivemonths,themanhasintroducedthewomanquiteafewnurses.

38.(43)

39.

【B10】

40.(36)

A.Manwillprobablybeabletolivetherein200years.

B.Scientistsareratherpessimisticaboutit.

C.Manwillprobablybeabletolivetherein100,000years'time.

D.Scientistsareoptimisticaboutovercomingthedifficultiessoon.

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

Whatarethepossiblereasonsthatsomemanagersdonotwanttobementorstotheirsubordinates?

42.SectionA

Directions:Inthissection,thereisashortpassagewith5questionsorincompletestatements.Readthepassagecarefully.Thenanswerthequestionsorcompletethestatementsinthefewestpossiblewords.

AfterNewJerseyGov.JonCorzinesustainedseriousinjuriesinacaraccidentApril12,manyofthereportsfocusedonhisfailuretowearaseatbelt.Whileit'simpossibletotellexactlyhowaseatbeltwouldhaveprotectedhim,theterribleaccidentwasapurereminderthatdespitethebarrage(一连串)ofpublic-serviceadmonitions(告诫)—andfinesinsomestatesforfailingtowearaseatbelt—noteveryonedoesitautomatically.Butthat'snottosaythatthepushforcarsafetyisn'thavinganeffect.Seatbeltusehasgoneupby10percentsince2000hittingarecord81percentnationwidein2006,accordingtotheNationalHighwayTrafficSafetyAdministration(NHTSA).Andtheagencyreportsthatsafetybeltssavedanestimated15,434livesin2004.Butforsomegroups,particularlyteensandyoungadults,usagestilllags.Sixty-twopercentofthe5,135youngpeopleages16to20killedwhenridinginpassengervehiclesin2004werenotwearingsafetybelts,accordingtotheNHTSA.

Soifyou'retheparentofateen,remindthemtowearaseatbelteverytimetheygetintoacar.Yes,evenit'sjustforashortrideandevenifthey'reinthebackseat.Andforkidsunder13,besuretofollowthesevehiclesafetyguidelinesfromtheNHTSA.

-Childrenfrombirthuntilage1orunder20poundsshouldrideinthebackseatinarear-facingchildsafetyseat.

-Childrenover1yearoldandweighingmorethan20poundscanrideinaforward-facingchildsafetyseatinthebackseat.

-Allchildrenwhohaveoutgrownchildsafetyseatsshouldbeproperlyrestrainedinbooster(辅助的)seatsuntiltheyareatleastgyearsoldor4feet,9inchestall.

-Oncechildrenoutgrowtheirboosterseats,theycanuseanadultseatbeltinthebackseataslongasitfitsproperly(thelapbeltshouldlieacrosstheupperthighsandtheshoulderbeltshouldfitacrossthechest).

-Newrulesrequiremanufacturerstophasein"smart"airbagsforall2007cars.Thenewairbagsareconstructedsotheydon'tinjuresmallerpassengersinthefrontseat.Butbecausemanycurrentcarsstillhaveoldtechnologyyoushouldkeepkidsinthebackseatuntiltheyareatleast13.

It'ssaidthatGov.JonCorzinesufferedfromaseverinjuryprobablybecause______.

43.FromthesurveybytheEqualitiesOfficewelearnthat______.

A.allparentswantmoretimetohelpchildrenwiththeirhomework

B.fewparentshavegoodrelationshipwiththeirteenagechildren

C.mostparentsfavortheideaofhavingflexibleworkinghours

D.parentsdonotneedtospendmuchtimewiththeirolderchildren

44.

FromthepassagewemayinferthattheToyota'sPartner______.

A.ismuchbetterthananyotherrobots

B.isnomorethanamechanicdevice

C.maybeputintomassproduction

D.mayspeaklikeman

45.Thewriterthinksthatthegrowthofspecialistperiodicalshashelpedscholarsto______.

A.cutdownresearchcosts

B.keepupwithcurrentdevelopments

C.spendlesstimetraveling

D.developtheirideasmorequickly

46.

Itcanbeinferredthattheauthor______.

A.quiteagreeswiththe"uptodateresume"attitude

B.canhardlytolerateone'scompleteenjoymentoflife

C.triestosoundpersuasiveandconvincinginhisopinionsaboutcareerblues

D.believesthatonecannotchangehis/herenvironment

47.ThoughKimiyukiSudausedtoownasportutilityvehicle,henowtravelsby______inmostcases.

48.

______mainlyleadstothelowlifeexpectancyinAmerica.

49.

AccordingtoMrs.Reagan,ifyouareoneoftheconsumersofdrug,itequalsthat______.

50.

Whatisthemythheldbysome"superwomen"?

A.Thattheycanreconciletheircareerswithparentalresponsibilities.

B.Thattheycandevotethemselvestotheircareerwithoutregardfortheirchildren.

C.Thattheycanresistthetemptationoftheirambitiontomakegreatachievements.

D.Thattheycanresolvetheconflictsbetweentheircareersandchildrenwithoutanysacrifice.

51.Itcanbeinferredfromthepassagethat______.

A.flexibleworkinghourssatisfiesboththeemployersandemployees

B.children'sopinionshouldbetakenintoconsideration

C.flexibleworkinghourshasbeenexistingfortoolong

D.thegovernmentismakingeffortinhelpingparents

52.WhatcanwelearnabouttheCityHall?

A.Itwasbuiltninetyyearsagoandisthemostoutstandingfeatureinthecenterofthecity.

B.ItisoriginallypropertobuildagardenonthetopoftheCityHall.

C.Thetemperatureonitstopisalittlebitlowerthanthatonthestreetbelow.

D.ItisthefirstbuildinginAmericatohaveagardenonit.

53.SectionA

Directions:Inthissection,thereisashortpassagewith5questionsorincompletestatements.Readthepassagecarefully.Thenanswerthequestionsorcompletethestatementsinthefewestpossiblewords.

Scientistssaytheyhavehighhopesforadrugthatcouldonedayprovideanewform.oftreatmentforH1V-AIDS.Acompound,whichinterfereswithanelusiveproteinusedbytheHIVvirustoinfecthumancells,hasworkedextremelywellinmonkeys,Ifthe.drugproveseffectiveinhumantrials,scientistssay,itcouldbolster(加强)theeffectivenessoftwoexistingAIDSdrugs,particularlyinfightingdrug-resistantstrainsofthevirus.

Researchersatthepharmaceutical(制药的)companyMerckareveryexcitedaboutanexperimentaldrug,whichhasworkedaswellinmonkeysinfectedwithaprimateversionofthevirusasanyoftheexistinganti-AIDSdrugs.

Itworksbyblockingoneofthreeproteins,orenzymes,theHIVvirususestogainentranceintoandinfecthumanimmunesystemcells.

Inhibitordrugshavebeendevelopedtoblocktwooftheproteins,toslowprogressionofthediseaseafterinfection.Theyhavebecomestandardtherapyasa"cocktail"forpeopleinfectedwithHIV.

Thoseenzymeserereversetranscriptase(转录酶)andprotease(蛋白酶).Thefirstconvertsthevirus'geneticmaterialintothatofitshostcells.Thesecondchopsuptheresultinglargerproteinsintosmallerpieces,producingsmallerviralparticlesthatinfectnewcells.

Thethirdprongofcellularattackisaproteincalledintegrase(整合酶),whichexpertssayhasbeenhardertoblock.OnceHIVfoolshostcellsbychangingitsgeneticinformationsoitcanenterthem,integraseactslikeacutandpasteoperationinawordprocessor,deletinganimmunecell'sgeneticmaterialandreplacingitwithitsown.

AnintegraseinhibitorwouldgivedoctorsathirdlineofattackagainstHIVinfection,accordingtovirologistDariaHazudaofthedivisionofVirusandCellBiologyatMerck.

"Thiswouldofferathirdclassofanti-retroviralmedicationsthatcanbecombinedwithreversetranscriptaseinhibitorsandproteaseinhibitors.Andsinceitisanewmechanismofaction,thesecompoundsareactiveagainstmulti-drugresistantvariants.SovariantsthatareresistanttoallcurrenttherapieshavebeenselectedinHIV-patients,"shesaid.

Currentanti-AIDSdrugseventuallybecomeresistanttotherapy,orstopworking,becausetheviruschangesitsshape.

Whileresearchersareencouragedbythesuccesswiththecompound'seffectivenessinmonkeytrials,developingadrugthat