2022-2023年河北省石家庄市大学英语6级大学英语六级

2022-2023年河北省石家庄市大学英语6级大学英语六级学校:________班级:________姓名:________考号:________

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

Whatdoweknowaboutthe"ghosting"fromthepassage?

A.ItisadoubleimageofTV.

B.Itreferstothespeedoflight.

C.Itwaseventuallysolvedbyengineers.

D.Itreferstothespeedoftheradiosignals.

2.

Forthewriter,thebiggestobstacleduringthewholeprocessofattendingcollegewas______.

A.justgettingstarted

B.resistancefrompeopleatwork

C.topasstheAmericanCollegeTest

D.cultureshockexperiencedincollege

3.

NocaptainsandnopilotseverescapedtheTriangleaccidents.

A.YB.NC.NG

4.HomeIsWheretheHurtIs

Beingforcedintoflighttotallydisruptsthelivesoftheinternallydisplaced,exactlyasitdoestorefugees.Butunlikemanyrefugees,theworld'smillionsofinternallydisplacedpersonsoftenhavenowheretoturn.Theyremaintrappedinthesameunsafeenvironmentfromwhichtheytriedtoflee.Insituationsofinternalstrife(冲突),bydefinition,theciviliangovernmentfunctionspartiallyornotatall;andthecivilianpopulationisignoredortreatedwithhostilitybybothsides.

AdefinitionsubmittedtotheU.N.CommissiononHumanRightsdefinestheinternallydisplacedas"personsorgroupsofpersonswhohavebeenforcedtofleetheirhomesorplacesofhabitualresidencesuddenlyorunexpectedlyasaresultofarmedconflict,internalstrife,systematicviolationsofhumanrightsornaturalorman-madedisasters,andwhohavenotcrossedaninternationallyrecognizedStateborder."

Today,thereareanestimated30millioninternallydisplacedpeopleintheworlddoublethenumberofrefugees.Inmanyplaces,theyareallbutforgottenbytheinternationalcommunity.

AlthoughtherearefewrefugeesinLatinAmerica,thereareupto3millioninternallydisplacedpersonsintheregion,includingasmanyas480,000inPeruand600,000inColombia.Inbothcountries,acombinationofpoliticalandsocio-economicfactors,suchasexcessivelyunequalincomedistribution,drug-traffickingandheavyinvolvementofthearmyinthepoliticalscene,haveresultedinhighlevelsofviolenceandaclimatethatfostershumanrightsabuses.Whethermanifestedasanongoingconflictbetweenthearmedforcesandthearmedopposition(thecaseofPeru),oraconstantarmedstrugglebetweenrebelandparamilitarygroups(thecaseOfColumbia),violencehascausedthedisplacementofhundredsofthousandsofruralpeasantsandnativepeople.Theinternallydisplacedoftenleadaverystableexistence,andtheyarehighlygratefulforanyonewhopaysattentiontotheirplight(averybadsituationthatsomeoneisin).

Delia,ofPeru'sAshaninkapeople,hasbeendisplacedforthepasteightyears.Now,homelessandhelpless,Deliaandherpeoplehavetodependonthegoodwillandcharityoftheirremoterelativesandoftheoccasionalnon-governmentalorganization(NGO).IthasbeenastruggleforDelia,whohastriedtoobtainbettereducationfacilitiesforthechildrenandtopromotesmallhandicraftsprojects.Andshetriestoshieldhercommunityfromthesurroundingconflictbyopposinganyinvolvementwiththearmedoppositionorwiththerondas(acivildefenseunitthatfightsagainsttheSendero).Thisneutralposition,inthecontextoftheconflict,isnotapopularonewitheitherside.Totheirwayofthinking,oneiseitheraronderooraSendero;thereisnomiddleroad.

WomenhavebeenthedrivingforceineffortstomaintainsomesemblanceofnormallifeinthePeruvianAndes.There,hundredsofthousandsofpeople,mostlyQuechuaspeakers,weredisplacedoverthelast10years.Husbandswere"disappeared"orkilled,andsonshadtojointhearmy.Thewomenhadtogathertheirchildrenandfleetourbancenterswheretheycouldmeltintothepoverty-strickenanonymityofashantytown(以临时搭盖的陋屋为主的地区).Nowtheyliveinshackswithnowater,noelectricityandnosewagesystem.Thechildrengetlittleschoolingandspendlongdaysplayinginthedirt.Povertydiseaseandunemploymentmakelifenearlyintolerable.Butdisplacedwomenhavenotbeenidle.Theyhaveorganizedsoupkitchens,"mothers'clubs"andhandicraftassociationstosupporteachotherandimprovelivingconditions.Irma,oneofthewomenwetalkedwiththinksthatsoonsheandhersisterswillbeabletogobackhome."Butwe'dlikeourgovernmentandtheworldtogiveusahand,"shesaid.

Despitethemanyhardships,the

A.YB.NC.NG

5.

Maternaldeathsandinfantmortalityarelooselyconnectedwiththepatternsofreproduction.

A.YB.NC.NG

6.

Itissuggestedthattheauthor'ssuggestionissomethinglikeusingboththestick______.

7.HowBirdsFindWayHome?

Theabilityofbirdstoreturntoafamiliarplacefromanydistanceisaremarkablefeatofnature.Forcenturiespeoplehavetakenadvantageofthisabilityinhomingpigeonsbyusingthemtotakemessagesfromdistantpointsbacktofamiliarsites.Homingpigeonsaredomesticatednon-migratorybirdswithaninstincttoreturntotheirlofts(nestingsites)thatisimprovedwithtrainingandbyselectivebreeding.Trainingisstartedatshortdistancesfromthenestingsite;overtime,thisdistanceisgraduallyincreasedtohundredsofmilesfromitsloftatacompletelyunfamiliarlocationanditcanflyinthedirectionofhomewithinaminuteortwoofitsrelease.Howdoesthisextraordinarybehavior.work?

Understandinghomingbehavior.isoneofthegreatestchallengestoornithologists(鸟类学家).Fortunately,becausetheyareabletocarefullycontroltheconditionsunderwhichthepigeonsarereleased,researchershavebeenabletolearnagreatdealabouthowthebirdsnavigatetheirwayhome.

Althoughhomingabilityhasbeenfosteredinpigeonsbycarefulbreedingandselectingofstock,itappearsthattrainingisnotalwaysnecessary:Manyspeciesofwildbirdsperform.similarlyremarkablefeats.OnesuchbirdisthemigratoryManxShearwater(剪嘴鸥).Builtliketinyalbatrosses,theseseabirdsspendmostoftheirlivesskimmingovertheoceansurfacefarfromthesightofland.Theycomeashoreonlytonestinburrows,whichtheydiginthegroundonoffshoreislandsinordertobesafefrompredators.Theeaseoflocatingandobservingtheirnestsmakeshearwatersidealsubjectsforhomingexperiments.

GreatBirdNavigators

Manymigratorybirdsareremarkablyfaithfultopreviousnestingandoverwinteringplaces.Thoughabirdmightbeabletocomeclosetothesesitesmerelybyflyinginageneraldirectionduringthecourseofmigration,atsomepointmoresophisticatednavigatingtechniquesmusttakeovertoguidethebirdtoitsprecisedestination.

Manyanimalsareabletofindtheirwayhome.Onewayofdoingthisistodirectlysensethegoal—tosee,hear,orsmellit.Anotherwayistomemorizethedetailsoftheoutwardjourneyandthenreversetheroutebasedonanintegrationofthatinformation.Birds,however,apparentlyrelyonacompletelydifferentprocesstofindtheirway.Toexplainbirdnavigation,wehavewhatisknownasthe"map-and-compass"theory.

Thecompasscomponentofthistheorygivesdirection--north,south,east,west;themapcomponenttellsthebirdwhereitis,orgiveslocality.Scientistshavelearnedagreatdealmoreaboutthecompasscomponentthantheyhaveaboutmapping.Theyknowthatbirdshaveseveralmeansofdeterminingcompassdirections,butunfortunately,theystillhavenosatisfactoryexplanationforhowbirdsusebiological"maps"toguidethemtoapreciselocationfromanunfamiliarstartingpoint.

BirdSunNavigators

Someobservationsindicatethatbirdsmightusethesunas,avisualcuetodeterminecompassdirections.Starlings(八哥),forexample,seemabletonegotiatetheproperdirectiononlyiftheyhaveaviewoftheclearskyandsun;cloudcoverseemstoinduceconfusion.Inanexperimentinwhichthesun'sapparentpositionwaschangedwithmirrorsattachedtoanorientationcagecontainingstarlings,observersnotedthatthedirectionofthestarlings'hopping,whichearlierhadbeencorrelatedtothedirectionthatchosetomigrate,wasshiftedaccordingly.

Evenbirdsthatmigrateexclusivelyatnightpayconsiderableattentiontothesun.Atfirstthismayseemoddbecause,afterall,thesunisnotvisibletothenocturnal(夜间活动的)birdswhentheyareflying.Ontheotherhand,itisapredominantfeatureintheskyatatimeofday(dusk)whenbirdsmaywellbemakingdecisionsaboutw

A.YB.NC.NG

8.

Chanplanstosetupaglobalhealthobservatoryto______onpriorityhealthproblems.

9.

WhydidFrenchwomenexceptintellectualwomenseldomhavefriendshipwhichisindependentoftheirfamilyinthepast?

A.Becausemostofthemdidnothaveajob.

B.Becausetheyonlyhadclosefriendsintheirgirlhood.

C.Becausetheyusuallyfocusedtheirlivesontheirfamilies.

D.Becausetheyweredependentontheirhusbands.

10.

Theconvergencecriteriainvolvegovernmentbudgetdeficit,outstandinggovernmentdebt,inflation,nominallong-terminterestrateand______________________.

11.

AccordingtoLegato,prescriptiondragshaveplayedanimportantroleintheextensionoflifeexpectancysince______

12.

Themeaningofmoversandshakersis_______.

13.

AftertheelectionLauraBushhasbeenmorewillingtoopentheWhiteHouse,butafter9/11sherestricted______.

14.

______,thecarbohydrates,fats,andproteinsrequiredforenergyproductionandtissuemaintenancecannotbeproperlymetabolized.

15.

StephenWinstonwasthefirstprofessionalorganizer.

A.YB.NC.NG

16.Easter

EasteristhemostimportantfestivalintheChristiancalendar.ItisthecommemorationofJesus'deathandhisrisingfromthedead,alsoknownastheresurrection.ItcomesattheendofLent.TheweekleadinguptoitiscalledHolyWeek.PalmSundayisthefirstdayofHolyWeekandcelebratesJesus'arrivalinJerusalemridingonadonkey.Crowdsofpeoplecameoutofthecitytogreethim,throwingdownpalmbranchesontheroad.Manychurchesgiveoutsmallcrossesmadefrompalmleaves,asareminderofJesus'entranceintoJerusalemandhisdeathonthecross.OnThursdayChristiansrememberwhenJesusatethePassovermealwithhisdisciples,breakingbreadanddrinkingwine,whichisnowknownastheLastSupper.Sincethenthismealhasbeensymbolicallyre-enactedbymanyChristiansasawayofdrawingclosertoGod.ThisiscalledtheEucharist,whichmeans'thanksgiving'.ItisareminderthatJesussacrificedhislifeformankind.

TheBibletellsusthat,laterthatnight,JesuswasbetrayedbyJudasIscariot.Afterhisarrest,JesuswasbroughtbeforetheJewishhighpriestswhofoundhimguiltyofblasphemybecausehecalledhimselftheSonofGod.TheyhandedhimovertotheRomangovernor,PontiusPilate.AswasthecustomatthetimeoftheFeastofPassover,Pilategavethecrowdsthechoiceastowhichofthetwoprisonersshouldbefreed:Jesus,orBarrabas,anotoriouscriminal.Ironically,thesamecrowdwhohadwelcomedJesuswithpalmbranchesafewdaysearliernowchoseBarrabastobereleased,andPilatecondemnedJesustodeathbycrucifixion.OnGoodFriday,manychurcheshold3hourservicesmeditatingontheeventsleadinguptoChrist'sdeath:hisinterrogation,flogging,themockingbytheRomansoldiers,andhisjourneywiththecrosstoGolgotha,theplaceofhisdeath.Finallyhewasshippednakedandnailedtothecross,wherehehunginagonyforthreehours,jeeredatbythecrowds,beforehedied.Thisisthedaywhenpeopletraditionallyeathotcrossbuns,becausethecrossonthebunisareminderofthecrossJesusdiedon,andareminderoftheChristianbeliefthatJesusdiedtosaveusall.

EasterSundaymarksJesus'resurrection.TheBibletellsusthatMaryMagdalenewenttothetomb,followedlaterbysomeofJesus'disciples.TheydiscoveredJesus'bodyhadgoneandthatthetombwasempty.JesusthenappearedtoMaryandmanyofhisdisciples,speakingwiththemonseparateoccasionsduringthefollowingfortydays.Asheleftthemforthelasttime,JesuspromisedtosendtheHolySpiritsothediscipleswouldknowGodwouldneverleavethem.Hethenascendedintoheaven.TheChurchcelebratesthisonAscensionDay.

WhydoweeatEastereggsatEaster?

ForChristians,Eastereggssymbolizenewlife.Theybelievethat,throughhisresurrection,Jesusdefeateddeathandsinandofferspeoplethepromiseofeternallifeiftheyfollowhisteachings.ThisiswhythereisatraditionforChristianstobebaptizedatEaster,whichcelebratesnewlifeinGod.However,thefestivalofEasterstretchesbacktopre-Christiantimes,too.Itgetsitsnameandsomesymbols,includingtheEasterBunny,fromthePaganSpringEquinoxfestival,whichisacelebrationofspringandalsoofnewlife.

WherearetheaccountsofEasterintheBible?

TheaccountoftheEasterstorycanbereadinMark,Chapters14to16,orLuke,Chapters22to24,andelementsofitcanbefoundintheothergospelstoo.ManyoftheeventsintheEasterstoryareforetoldintheOldTestamentinIsaiahchapter53.

WhydoesthedateofEasterchangefromyeartoyear?

ThedateofEasterSundayvariesfromyeartoyearbecauseitisbasedonthelunarcalendar,ItiscelebratedonthefirstSundayafterthefullmoon,onorafterMarch21st.

Dorabbitslayegg

A.YB.NC.NG

17.Comparedwiththeir1960scounterparts,theundergraduatesinMs.Blum'sresearchpreferto______.

A.challengethenotionofauthorshipandoriginality

B.establishauniqueandauthenticidentity

C.haveatryonmanydifferentpersonas

D.domoresocialworkbyWeb-linking

18.

Thevalueofgoodsandservicesinamarketisdeterminedbytheactionsof_________________.

19.Topreventsmallcasesoffraud,Ms.Coenenadvicesemployerstotellemployeeswhatbehavioursareunacceptedwitha______.

20.

Calcium-richfood______itssupplementsbecauseitalsoprovidesothernutrientslikevitaminDandotherminerals.

二、3.ListeningComprehension(20题)21.(16)

A.Asksomeoneelsetohelpthewoman.

B.Askthewomanfordirections.

C.Showthewomanthemap.

D.Showthewomanwherethedormitoryis.

22.听力原文：M:I'mwonderingifIcouldpossiblyscheduleanappointmentwithMr.Kellythisweek.

W:Letmesee.OnMonday,hewillbeinParisforameeting,anditwilltakehimthreedaysthere;thenhewillflytoLondontomeetanimportantclient...Well,Idon'tthinkheisavailablethisweek.

Q:WhatdowelearnaboutMr.Kellyfromtheconversation?

(16)

A.HewillbeinParisonThursday.

B.Hewillhaveafullschedulethisweek.

C.HewillattendameetingonThursday.

D.Hewillprobablymeetthemanthisweek.

23.(31)

A.Quietplants.

B.Well-wateredplants.

C.Healthyplants.

D.Thirstyplants.

24.(34)

A.Ajoblisting.

B.Aresume.

C.Apermissionslip.

D.Theirsalaryrequirements.

25.【B8】

26.SectionA

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

听力原文：M:Icouldn'tputupwithmywifeanylonger.Idon'tknowwhysheusuallywantstolookateverythinginsuchanegativeway.

W:Maybeyoushouldtrytogettoknowsomethingaboutherchildhood.

Q:Whatdoesthewomanmean?

(12)

A.Themanshouldtrytobemoreunderstanding.

B.Theman'swifeshouldbemoreunderstanding.

C.Theman'snegativeattitudemaybederivedfromhischildhood.

D.Thepessimismofman'swifemaybetheresultofherpastexperiences,

27.【B1】

28.

【B4】

29.听力原文：W:Hey,congratulationsonwinningthespeechcontest.Thatfifteen-hundred-dollarprizemoneyshouldreallycomeinhandy.

M:Youbet!I'vealreadyputitasidetocovertheincreasemylandlordjustannouncedfornextyear.

Whatdowelearnfloratheconversation?

(15)

A.Themanhastopaymoreforhisrentnextyear.

B.Thewomanandthemanhavemadeabet

C.Thewomanwantstoborrowmoneyflorathematt

D.Themanhaswon＄150.

30.听力原文：W:Hi,John.

M:Oh!Hi,Laura.Whatareyoudoinghere?

W:Uh.I'musuallyhereonweekends.It'smydad'sshop.Soyouarelookingforabike?

M:Yeah.Nowthattheweatheriswarmingup,IthoughtIgetsomeexerciseinsteadoftakingthebusallthetime.

W:Well,youcametotherightplace.Doyouknowwhatyouwouldlike?

M:Well,Idon'twantaraceroratouringbikeoranything.MostlyI'lljustbeusingittogetmebackandforthfromwork.

W:Howfaristhat?

M:Aboutfourmiles.

W:Aretherealotofhillsontheway?

M:SomeIguess.ButmaybeIshouldtellyouatthefrontthatIonlygot150dollars.CanIgetanythingdecentforthat?

W:Well,youarenotgoingtogetanythingtopoftheline.Butwedohaveafewtrade-insinthebackthatareingoodcondition.

M:Thatsoundsgood.

W:Andyouareright.Forthekindofrideyouaregoingtobedoing,themostimportantthingiscomfort.Youwanttomakesureit'stherightheightforyou.FollowmeandI'llshowyouwhatwe'vegot.

(20)

A.Sheisspendingtheweekends.

B.Shesellsbikesforherdad.

C.Shelooksforabike.

D.Shegetssomeexercisewithabike.

31.(35)

A.Husbandssharepowerwiththeirwivesandhelpthemwiththehousework.

B.Olderwomendonotoftenhaveimportantpositions.

C.Familystructureismorepatriarchalinthenuclearfamily.

D.Womenhavetohelpsisters,grandparentswithhouseworkandchildren.

32.

【B10】

33.

【B11】

34.

【B7】

35.听力原文：WeknowthenthatintheUS,it'sthejobofCongresstoproposenewlaws,whichwecallbills,andperhapstomodifythesebillsandthenwriteonthem.ButevenifthebillispassedinCongress,itstilldoesn'tbecomealawuntilthePresidenthasachancetoreviewit,too.Andifit'snottothePresident'sliking,thebillcanbevetoedorkilledineitheroftwoways.Oneisbyavetomessage.ThePresidenthastendaystovetothebillbyreturningittoCongress,alongwiththemessageexplainingwhyit'sbeingrejected.ThiskeepsthebillfrombecomingalawunlessoverwhelmingmajoritiesofbothHousesofCongressvotetoover-rightthePresident'sveto.Sometimestheydothat.Often,lawmakerssimplyrevisethevetoedbillandpassitagain.Thistime,intheform.thePresidentislesslikelytoobjectto,andlesslikelytowanttoveto.TheotherwaythePresidentcankillabillisbypocketveto.Here'swhathappens.IfthePresidentdoesn'tsignthebillwithintendays,andCongressajournsduringthattime,thenthebillwillnotbecomelaw.NoticethatitisonlyattheendofanentiresessionofCongressthatthepocketvetocanbeused,notjustwheneverCongresstakesashorterbreak,say,forasummervacation.Afterapocketveto,thatparticularbillisdead.IfalawmakerinCongresswantstopushthematterintheirnextsession,they'llhavetostartalloverwithabrandnewversionofthebill.

(33)

A.HowthePresidentproposesnewlaws.

B.HowabillispassedbylawmakersinCongress.

C.HowthePresidentcanrejectaproposedlaw.

D.HowlawmakerscanforcethePresidenttosignabill.

36.

【B2】

37.(26)

A.Sheknowsheisverybusy.

B.He'salreadyhelpedherenough.

C.Heisincompetenttohelpher.

D.Shedoesn'tneedanyhelp.

38.听力原文：M:Thoughwedidn'twinthegame,weweresatisfiedwithourperformance.

W:Youdidagreatjob.Youalmostbeattheworldchampions.It'srealsurprisetomanypeople.

Q:Whatdowelearnfromtheconversation?

(18)

A.Theybothenjoyedwatchingthegame.

B.Themanthoughttheresultswerebeyondtheirexpectations.

C.Theybothfeltgoodabouttheresultsofthegame.

D.Peopleweresurprisedattheirwinningthegame.

39.(28)

A.Theycouldn'tgetenoughincometokeepthemrunning.

B.Youngpeoplecouldn'taffordtopaythetuitionfees.

C.Keepingthemrunningatthesamelevelwouldcastmuchmore.

D.Socialservicesneedmorestatefundsbecauseoftherecession.

40.听力原文：M:What'sontheTVthisevening?Ifeellikerelaxing.

W:Whyaskmethat?YouknowIneverwatchit.

M:Toobusywiththelatesthobby,areyou?Whatisitthistime,knittingsocksforyournephews?Orcollectingbuttons?IwishIhadasmuchfreetimeasyoudo.

W:Men!Asamatteroffact,youprobablyhavemorethanIdo.ButyouwasteitallwatchingyourTV.

M:That'snotawasteoftime.I'vegottorestsometimes.

W:Sometimes,maybe,butnotallthetime.Andanyway,Irelaxwithmyhobbies.Achangeisasgoodasarest.

M:Well,theTVismyhobby,andIlearnalotfromit.

W:Butitdoesn'tteachyoutodoanything,doesit?Youjustsitthereandstareatit.That'snotlearning.

M:ButIdolearn.Therearelotsofeducationalprograms.

W:Butyoudon'twatchthem,doyou?Wheneveraneducationalprogramcomeson,youeitherswitchovertotheotherchannelorgotosleep.

M:WhenIcomehomefromwork,Ineedtoputmyfeetup,atleastforawhile.Life'snotallwork,youknow.

W:Hobbiesaren'twork.Ilikeputtingmyfeetup,too,attheendoftheday,butIlikedoingthingswhileIrest.

Life'stooshortforustowastetime.

(20)

A.WatchingTV.

B.Knittingsocks.

C.Chattingwithneighbors.

D.Doinghousework.

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

By2030thegovernmentsindevelopedcountriesmayputanendtofixedretirementages______.

A.tosavethecurrentpensionsystem

B.toensurethebenefitsforhealthypensioners

C.torealizefullretirementbenefitssubstantially

D.torelievethepensionsburdenontheworkingpopulation

42.

Whatdoesthepassagemainlydiscuss?

A.Thefeasibilityandirrationalityofprotectingmedicalprivacy.

B.Thegovernment'sappealtoprotectionofmedicalinformation.

C.Patientsshouldenjoymorerightstotheirmedicalrecords.

D.Doctorsandinsurers'complaintabouttheproposal.

43.Ifsomeoneislongdeprivedofsleep,hewillcertainly______.

A.sufferdepression

B.forgetjoyfulmemories

C.form.nonewmemories

D.findithardtoremember

44.

Accordingtothepassage,asenseofhumor______.

A.canbereflectedinmanyways

B.canmakeusavoidmakingmistakes

C.helpsusleadamorehealthylife

D.remindsusoftheexistenceoftragedy

45.Accordingtothepassage,ifapersonneverforgot.

A.hewouldsurvivebest

B.hewouldhavealotoftrouble

C.hisabilitytolearnwouldbeenhanced

D.theevolutionofmemorywouldstop

46.AsStanleysaid,ifyouwanttoknowhow,whenorwhyHerakleionandEasternCanopusdisappeared,therewas/were______toreferto.

47.(55)

48.

Whyresearchersputtreesinextracarbondioxideinthefirststudy?

A.Tolearnwhethertreescanstillabsorbcarbondioxideunderextremeconditions.

B.Togetmoreoxygenfromthesetrees.

C.Toevaluatethemaximumcarbondioxidethattreescanabsorb.

D.Toseethegrowthrateofthesetrees.

49.

Wecanlearnfromthelastparagraphthat______.

A.itisnecessarytoobtainasmuchknowledgeaspossible

B.peopleshouldmakethebestuseoftheinformationaccessible

C.weshouldrealizetheimportanceofaccumulatinginformation

D.itisofvitalimportancetoacquireneededinformationefficiently

50.ThroughoutGeorgeBush'spresidency,thefederalgovernmenthasrefusedtosupportanyregulationofthegreenhousegasesthatcauseglobalwarming.Wheneverthesubjectcomesup,officialstendtomumble(咕哝)aboutuncertainties.ButonApril2nd,theSupremeCourtatlastsettledoneofthebiggestoutstandingquestions:whetherthegovernmenthastheauthoritytocurbemissionsinthefirstplace.

ThecourtruledthattheCleanAirActalawfromthe1960designedtocombatsmog--givestheEnvironmentalProtectionAgency(EPA)thepowertoregulatecarbondioxide,themaingreenhousegas.ItalsosaidtheEPAwouldneedanexcuseifitdecidednottousethispower.ItdismissedthejustificationstheEPAhadprovidedforinaction-thatemissionsfromAmericancarswereinsignificantillthegrandschemeofthingsandthatunilateralactionbyAmericawouldundermineeffortstoachieveinternationalconsensus'onglobalwarming—asinadequate.Strictlyspeaking,therulingappliesonlytoemissionsfromvehicles,butaverysimilarcaseregardingcoal-firedpowerplantsispending(未决的)infederalcourt.TheEPAsaysitisnowexaminingtheruling.

TheEPAmightexamineitforsometime,ofcourse.Anyregulationitcomesupwithinresponsemightstilldeferactionintothedistantfuture,sincethelawallowstheEPAtodelayimplementationuntilappropriatetechnologycanbeacquiredatareasonablecost.Evenifitproceedsquiteswiftly,anewpresidentandCongresswithglobe-coolingideasoftheirownwillbeinplacelongbeforeanynewrulecomeintoeffect.

Thatsuitstheenvironmentallobbyjustfine.TheyhopetherulingwillspurCongresstoaddressglobalwarmingwithproperlegislation.Afterall.itmakeslittlesenseforsuchanimportantissuetobetackledtangentially(无关的)througha40-year-oldlaw.Andif2009seestheinaugurationofagreenerpresident,heorshewillnowhavethepowertodictatestricterfuelefficiency,intheform.oflowerCO2emissions,withoutreferencetoCongress.

Californiasetanexample.In2002,thestateassemblypassedalawregulatingemissionsofCO2fromvehicles,basedonaprovisionoftheCleanAirActthatallowsCaliforniatoadoptstricterpollutionstandardsthanthefederalgovernment.Carmakershavechallengedthelaw.inpartonthegroundthatCO2wasnotanairpollutant.ThecarindustryquicklydeclaredthattheissueofglobalwarmingisbesthandledatthefederallevelbyCongress.

WhatistheSupremeCourt'sattitudetowardsthegovernment'sfunctionincontrolofgreenhousegases?

A.Itisthegovernment'sobligationtosetupstricterregulation.

B.Itisdisappointingforthepublicthatthegovernmentshiesawayfromthisproblem.

C.Thegovernmentistheonlyorganizationthatcancontrolgreenhousegases.

D.Thegovernmentisnotthechieforganizationauthorizedtocontrolgreenhousegases.

51.

WhichoneisNOTtheadvantageofculturecamp?

A.Childrencanlearnalotinculturecamp.

B.Parentscanfindthekeystothequestionsinbringuptheiradoptedchildren.

C.Itdemonstratestheincreasingtendencyofforeignadoptions.

D.Adoptedchildrencanhaveabetterperception