2022年广东省广州市大学英语6级大学英语六级模拟考试(含答案)

2022年广东省广州市大学英语6级大学英语六级模拟考试(含答案)学校:________班级:________姓名:________考号:________

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

Tropicalrainforestsarethemostdiverseecosystem(生态系统)onEarth,andalsotheoldest.Today,tropicalrainforestscoveronly6percentoftheEarth'sgroundsurface,buttheyarehometooverhalfoftheplanet’splantandanimalspecies.

WhatIsaRainforest?

Generallyspeaking,arainforestisanenvironmentthatreceiveshighrainfallandisdominatedbytalltrees.Awiderangeofecosystemsfallintothiscategory,ofcourse.Butmostofthetimewhenpeopletalkaboutrainforests,theymeanthetropicalrainforestslocatedneartheequator.

Theseforestsreceivebetween160and400inchesofrainperyear.Thetotalannualrainfallisspreadprettyevenlythroughouttheyear,andthetemperaturerarelydipsbelow60degreesFahrenheit.

Thissteadyclimateisduetothepositionofrainforestsontheglobe.BecauseoftheorientationoftheEarth'saxis,theNorthernandSouthernhemisphereseachspendpartoftheyeartiltedawayfromthesun.Sincerainforestsareatthemiddleoftheglobe,locatedneartheequator,theyarcnotespeciallyaffectedbythischange.Theyreceivenearlythesameamountofsunlight,andthereforeheat,allyear.Consequently,theweatherintheseregionsremainsfairlyconstant.

Theconsistentlywet,warmweatherandamplesunlightgiveplantlifeeverythingitneedstothrive.Treeshavetheresourcestogrowtotremendousheights,andtheyliveforhundreds,eventhousands,ofyears.Thesegiants,whichreach60to150ftintheair,form.thebasicstructureoftherainforest.Theirtopbranchesspreadwideinordertocapturemaximumsunlight.Thiscreatesathickcanopy(树冠)levelatthetopoftheforest,withthinnergreenerylevelsunderneath.Somelargetreesgrowsotallthattheyeventoweroverthecanopylayer.

Asyougolower,downintotherainforest,youfindlessandlessgreenery.Theforestfloorismadeupofmoss,fungi,anddecayingplantmatterthathasfallenfromtheupperlayers.Thereasonforthisdecreaseingreeneryisverysimpletheoverabundanceofplantsgatheringsunlightatthetopoftheforestblocksmostsunlightfromreachingthebottomoftheforest,makingitdifficultforrobustplantstothrive.

TheForestfortheTrees

Theamplesunlightandextremelywetclimateofmanytropicalareasencouragethegrowthoftoweringtreeswithwidecanopies.Thisthicktoplayeroftherainforestdictatesthelivesofallotherplantsintheforest.Newtreeseedlingsrarelysurvivetomakeittothetopunlesssomeoldertreesdie,creatinga"hole"inthecanopy.Whenthishappens,alloftheseedlingsonthegroundlevelcompeteintenselytoreachthesunlight.

Manyplantspeciesreachthetopoftheforestbyclimbingthetalltrees.Itismucheasiertoascendthisway,becausetheplantdoesn'thavetoform.itsownsupportingstructure.

Someplantspecies,calledepiphytes,growdirectlyonthesurfaceofthegianttrees.Theseplants,whichincludeavarietyoforchidsandferns,makeupmuchoftheunderstory,thelayeroftherainforestrightbelowthecanopy.Epiphytesarecloseenoughtothetoptoreceiveadequatelight,andtherunofffromthecanopylayerprovidesallthewaterandnutrients(养分)theyneed,whichisimportantsincetheydon'thaveaccesstothenutrientsintheground.

StranglersandButtresses

Someepiphyteseventuallydevelopintostranglers.Theygrowlong,thickrootsthatextenddownthetreetrunkintotheground.Astheycontinuetogrow,therootsform.asortofwebstructureallaroundthetree.Atthesametime,thestranglerplant'sbranchesextendupward,spreadingoutintothecanopy.Eventually,thestranglermayblocksomuchlightfromabove,andabsorbsuchahighpercentageofnutrientsfromthegroundbelow,thatthehosttreedies.

&

A.YB.NC.NG

2.

Owingtosomelifeexperiences,peopleoftenlack______inmanyworkplaces.

3.Thecropcircleswerethoughttobethegreatestworksofmodernart,thesignsof______orlandingsitesofUFOs.

4.

Humanactivitycouldbringaboutmeltingofthe______inthiscentury.

5.

Dr.Schweitzerwasabletosettletheargumentbecausehewasthejudgethere.

A.YB.NC.NG

6.

TheachievementsforHIVvaccinehasbeengivendiscountbecause______.

A.itcausesanumberofquestionstoanswer

B.itcan'teffectivelyprotectpeoplefromHIV

C.itcan'tberecognizedbythepeople

D.itisprovedineffectiveintreatingHIV

7.

ThevoyageofEmery'sfatherandhiscompanionsheadingforCookInletcanbedescribedas______.

8.

EasterdayiscelebratedeveryyearonMarch21st.

A.YB.NC.NG

9.

______meansalotoftime,especiallyforthosehardchargingexecutiveswhoarenotusedtohavinganytime.

10.

Americanhighschoolstudentssinkalmosttothebottominasurveyofmathandscienceliteracybecausetoomanyofthehighschool______inAmericaarenotqualified.

11.

Diseasescanbepreventedbymeansofvaccinationor______.

12.

Studentsgetmoneyfromnotonlyfederalloansbutalso______.

13.HowissustainablepublicspacedevelopedinSerenbe?

A.Peopleplanttreesandmakewaterflowinthatspace.

B.Citizenscangrowtreesfreelyinthespace.

C.Concretewallsaremadeoutsidetheplaceforaprotection.

D.Naturalthingsinthatspacedevelopwithouthumandisturbance.

14.

Thegrass-fed-beefburgersintheYaleSustainableFoodProjecthavebeenboughtfrom______.

15.

ToIndians,theterminationofGangotriglacierisknownasthe______orcow'shead.

16.

TheboxofficeofTerminatorismorethanthatofMyBigFatGreekWedding.

A.YB.NC.NG

17.

Whena"falserule"isappliedtoyoursituation,______.

A.itcanbeofnohelpwithyourproblem

B.itmaymisleadyoutoafalsedirection

C.itmaymakeyourproblemmorecomplicated

D.itmayofferyouabrand-newoutlook

18.

______oftenresultsfromworkingforanorganization.

19.

Talkingtooneselfisaneffectivemeansofmanagingstressbecauseitisameansof______.

20.

Theresearchersarenowtryingtofigureout______.

A.whetherobservedantibodiescanblocktheinfectionofHIV

B.whetherthecombinationofvaccinesstimulatesnewmolecules

C.whetherthecombinationofvaccinescanworkwell

D.whetherthecombinationofvaccinescouldbetestedinnormalpeople

二、3.ListeningComprehension(20题)21.(25)

A.Toomanypeople.B.Dirtyair.C.Crime.D.Terrorism.

22.(26)

A.Twenty-fourcredits.

B.Twelvecredits.

C.ThreeCredits.

D.Thirty-sixcredits.

23.

【B5】

24.听力原文：W:CouldyoupleaseexplaintheassignmentforMonday,Mr.Smith?

M:Certainly.Readthenextchapterinyourtextbookandcometoclasspreparedtodiscusswhatyou'veread.

Q:Whatistheprobablerelationshipbetweenthetwospeakers?

(16)

A.Boss-Secretary.

B.Client-Lawyer.

C.Student-Teacher.

D.Patient-Nurse.

25.

【B6】

26.(22)

A.Sheisworriedshecan'tattendthecourse.

B.Sheisworriedshehastochangeprofessor.

C.Sheisworriedshemightnotbeabletograduate.

D.Sheisworriedshemightfallbehindinthecourse.

27.(32)

A.Thelonghistoryshattersitsground.

B.Thecanalsunderitbegintocollapse.

C.Ithasbeenhalfimmersedintheseawater.

D.Itisfloodedfarmoteoftenthanbefore.

28.(45)

29.听力原文：TheGoldenGateBridgejoinsthebeautifulcityofSanFranciscowithsuburbstothenorth.Eachdayaboutonehundredthousandautomobilescrossthebridgetakingpeopletoandfromthecity.Morethanhalfofthemcrossthebridgeduringthemorningandeveningrushhourswhentrafficiisoheavythattripisnotpleasant.

Nowhoweverthereisatleastonegroupofhappycommuters.Thesearethepeoplewhotravelunderthebridgeinsteadofonit.Theygotoworkbyboatandenjoyitsemuchthat'mostofthemsaytheywillnevergobycaragain.Theferrytheytakeisspacious,quietandcomfortable.Commuterscanenjoythesunondeck,Inthemorningtheycanhavebreakfastinthecoffeeshop.Andintheeveningtheycanorderadrinkinthebarwhilelookingatthebeautifulscenery.Thetriptakesonly30minutesandisnotverycostly.Butbestofall,beingonaboatseemstomakepeoplefriendliertowardeachother.Therehasalreadybeenamarriageoftwocommuterswhometontheferry.

Becausetheferryhasbeensosuccessful,thereareplanstouseotherstilllargerboats.Thereisalsoaproposalforahighspeedboatthatwillmakethetripinonly15minutes.Butnoteveryoneishappyaboutthat.Alotofpeoplefeelthathalfanhourisjustenoughtimetorelax.

(30)

A.Theyaredelightedbecausetheycanenjoythescenerywhiledriving.

B.Theyarefrightenedbecausetrafficaccidentsarefrequents.

C.Theyareirritatedbecausethebridgeisjammedwithcars.

D.Theyarepleasedbecauseitsavesthemmuchtime.

30.

【B2】

31.(16)

A.Heislikelytohelp.

B.Hehasalreadybeenaskedforhelp.

C.Hedoesn'tknowalotaboutcomputer.

D.Hewasthelastonetousethecomputer.

32.听力原文：MaryCassattwasbornin1854nearPittsburgh,Pennsylvania.(32)Herfather,RobertCassatt,wasawealthyinvestor.Hermother,Katherine,hadadeepknowledgeofbooks,artandtheFrenchlanguage.

MrCassattwantedhischildrentoexperienceEuropeaneducationandculture.MaryandherfamilyvisitedtheUniversalExhibition.(33)Shemightalsohaveseentheworksofarevolutionarypainter,GustaveCourbet.Courbet'sartwascriticizedforitsrealism.So,hewasnotpermittedtoshowhisworkintheexhibit.Instead,hecreatedhisownexhibitspacenearby.

Duringthe19thcenturyintheUnitedStates,wealthywomenusuallydidnothavecareers.Womengenerallylearnedhowtocareforahouse.(34)ButMaryCassattwasdifferent.Shebelievedthathertraininginartwasmuchmorethanafunactivity.Shesawartasherfuture.Herfatherdidnotapproveofherdecisiontobecomeanartist.ButMarydidnotletthisstopher.Sherealizedthattobecomeafullytrainedartist,shehadtogotoEuropetostudy.TravelwasimpossibleduringthefouryearAmericanCivilWarthatbeganin1861.So,itwasnotuntil1866thatshereturnedtoParis.

CassattworkedhardcopyingthegreatpaintingshangingintheLouvremuseum.Shealsostudiedwithdifferentteachers.In1868,(35)oneofMaryCassatt'spaintingswasacceptedintotheParisSalon.Thisshowwasoperatedbythegovernment-controlledFrenchAcademyofFineArts.Twoyearslater,theSalonacceptedanotherofherpaintings.Hercareerasasuccessfulartisthadbegun.

(33)

A.Shesucceededininvesting.

B.Shewasknowledgeableforarts.

C.Shesucceededinpaintings.

D.Shedislikedbooksandarts.

33.听力原文：M:Howisschoolgoing,Barbara?Areyoutakinganynewclasses?

W:I'mtakinganotherreallyinterestingcoursecalledBusinessandtheWeb.Wearelearningaboute-commerceandhownewtechnologicaldevelopmentswillaffectthewaywebuy,sellandmarketthingsinthefuture.

M:Wow,thatsoundslikesomethingIshouldtake.

W:Ithinkit'soneofthemostusefulcoursesI'vehadsofar.Rightnow,wearestudyingwirelesscommunicationsandhowthat'sgoingtoaffectthedevelopmentoftheinternetandeventuallyonlinebusiness.Wehavehadseverallecturesontheimportanceofcellphonesandseveralnewkindsofportablecomputersandotherelectronicdeviceswhicharebasedonrelatedtechnologies.

M:Whatotherkindsoftopicswillyoubecovering?

W:WearegoingtodiscusshighbandwidthInternetconnections,likecablemodems,whichwillallowustoexchangeinformationmorequickly.Andfromthere,wewillfocusonhowInternet,TV,radioandtelephonetechnologiesareallstartingtocometogether.

M:Iwasjustreadingaboutthatinthenewspaper.Buthowdoesthatrelatetoonlinebusiness?

W:Asthesetechnologiesconvergeinthenearfuture,anewhigh-speednetworkwilldevelopwhichwillbeperfectforthedistributionofproductsandservicesonline.

(20)

A.E-commerce.

B.Wirelesscommunications.

C.Businessandtheweb.

D.Newtechnology.

34.(35)

A.Warsornaturaldisastersmakethemlosetheirfamilies.

B.Theywanttohelptheirfamiliescamenoughmoneytosurvive.

C.Theyarepoor.

D.Alltheabove.

35.听力原文：W:Hi,Tom.Ihaven'tseenyouforafewweeks.Whatareyoudoingrecently?

M:Oh,hi,Jean.Nothingspecial.I'vebeenstudyingalotformyfinalexam.

W:Well,thesemesterisalmostovernow.

M:Yeah.Mybrotheriscomingforavisitthissummer,andwe'dliketoseesomeofthecountry.Buttravelingissoexpensive!

W:Haveyouthoughtaboutcamping?

M:Camping?I'veneverdonethat.

W:Whynothaveatry!Ibelieveyou'llreallylikeit.Youcanrenttheequipmentyouneed.It'smuchcheaperthanbuyingitorstayingatahotel.AndbeingclosetoNatureisagoodwaytoforgetaboutourschoolforawhile.

M:ThatsoundslikeagoodidealWecandriveuntilwefindanicespotandjustcampwhereverwelike.Oh,that'ssocool!

W:Well,actuallynotexactly.It'susuallyillegalunlessyoucampinadesignatedarea.Butanywaytherearemanynationalparks,stateparksandevenprivately-ownedcampgroundsaroundthecountry.Youstillhavealotofchoices.

M:Butthattakesallthefunoutofit!

W:Notreally.Besides,therearealmostalwaysconvenienceslikeshowersatthecampgroundstomakeitalittleeasier.

M:Mm...soundsgreat!Mybusiscoming.I'lltalktoyouaboutthislaterandgetallthedetails.

(20)

A.Buyit.B.Rentit.C.Borrowit.D.Makeit.

36.(39)

37.【B4】

38.(14)

A.Tomisveryresponsible.

B.Tom'swordsaren'treliable.

C.WhatTomsaidistrue.

D.Tomisnothumorousatall.

39.(31)

A.Awideselectionofinvestments.

B.Alimitedrangeofstocks.

C.Agroupoflowriskbondsandcash.

D.Avarietyoffunds.

40.听力原文：W:Sohowwasthedramaclub'snewproductionlastnight?DidImissoutonanythinggood?

M:Hardly.Ikeptlookingatmywatchthewholetime.

Q:Whatdoesthemanmean?

(19)

A.Thedramawasn'tinterestingatall.

B.Hiswatchisexpensive.

C.Hehadanotherappointmentlastnight.

D.Thewomanshouldhavebeentherelastnight.

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

A.thebriefdurationofweatherpattern

B.thevariabilityofthemesoscalephenomena

C.thedifficultyofmeasuringtheocean'slarge-scalecurrents

D.thepossibleimpactofmesoscalefieldsonweatherconditions

42.SectionA

Directions:Inthissection,thereisashortpassagewith5questionsorincompletestatements.Readthepassagecarefully.Thenanswerthequestionsorcompletethestatementsinthefewestpossiblewords.

Googleisaworld-famouscompany,withitsheadquartersinMountainView,California.ItwassetupinaSiliconValleygaragein1998,andinflated(膨胀)withtheInternetbubble.Evenwheneverythingarounditcollapsedthecompanykeptoninflating.Google'ssearchengineissowidespreadacrosstheworldthatsearchbecameGoogle,andgooglebecameaverb.Theworldfellinlovewiththeeffective,fascinatinglyfasttechnology.

GoogleowesmuchofitssuccesstothebrillianceofS.BrinandL.Page,but'alsotoaseriesoffortunateevents.ItwasPagewho,atStanfordin1996,initiatedtheacademicprojectthateventuallybecameGoogle'ssearchengine.Brin,whohadmetPageatastudentorientationayearearlier,joinedtheprojectearlyon.TheywerebothPh.D.candidateswhentheydevisedthesearchenginewhichwasbetterthantherestand,withoutanymarketing,spreadbywordof'mouthfromearlyadoptersto,eventually,yourgrandmother.

Theirbreakthrough,simplyput,wasthatwhentheirsearchenginecrawledtheWeb,itdidmorethanjustlookforwordmatches;italsotallied(统计)andrankedahostofothercriticalfactorslikehowwebsiteslinktooneanother.Thatdeliveredfarbetterresultsthananythingelse.BrinandPagemeanttonametheircreationGoogol(themathematicaltermforthenumber1followedby100zeroes),butsomeonemisspelledthewordsoitstuckasGoogle.Theyraisedmoneyfromprescient(有先见之明的)professorsandventurecapitalists,andmovedoffcampustoturnGoogleintoabusiness.Perhapstheirbiggeststrokeofluckcameearlyonwhentheytriedtoselltheirtechnologytoothersearchengines,butnoonemettheirprice,andtheybuiltitupontheirown.

Thenextbreakthroughcamein2000,whenGooglefiguredouthowtomakemoneywithitsinvention.Ithadlotsofusers,butalmostnoonewaspaying.Thesolutionturnedouttobeadvertising,andit'snotanexaggerationtosaythatGoogleisnowessentiallyanadvertisingcompany,giventhatthat'sthesourceofnearlyallitsrevenue.Todayitisagiantadvertisingcompany,worth$100billion.

Apartfromaseriesoffortunateevents,whatisitthathasmadeGooglesosuccessful?

43.

【C3】

44.

Thearticlecanbebesttitledas______.

A.EducationintheRenaissance

B.HumanismintheRenaissance

C.DebateonEducation

D.TheNewEducation

45.

Whatistheadvantageinusingthermographytodetectcancer?

A.Itisveryaccurateindetectingbreastcancer.

B.Itcanindicateverysmallcancers.

C.Itaddstodoctors'skillsintreatingdisease.

D.Itishelpfultosavelives.

46.

【C2】

47.AlthoughweAmericansinrecentdecadeshavegrownricher,ourchildrenhavegrownpoorer.Manyfamiliesnolongeradequatelyperform.thenurturingandsupportingfunctionthatchildrenneed,emotionallyandintellectually.

Theevilconsequencesforchildrenarenotindispute.Therateofsuicideamongchildrenagedtentofourteenistwiceashighasitwastwentyyearsago.Forchildrenagedfifteentonineteen,theratehastripled.

Since1983,crimesbychildrenhavebeenrisingatafasterratethanthejuvenilepopulation.Abouthalfofsuchcrimesinvolvethetraditionalyouthfuloffensesoftheft,breakingandentering,andvandalism,butserious,violentcrimes,thoughstillinvolvingarelativelysmallproportionofchildren,aregoingupatastartlingrate,Therateofarmedrobbery,rape,andmurderbyjuvenileshasdoubledinadecade.

TheSenateJuvenileDelinquencySubcommitteesurveyed750schooldistrictsandreportedthefollowingchangesbetween1990and1993.Dropoutsincreasedby11percent.Drugandalcoholoffensesonschoolpropertywereup37percent.Burglariesofschoolbuildingswereup11percentandassaultsonteachersup77percent.

Amongthosewhoarethoughtofas"normal"children,lowerreadingscoresandscholasticaptitudescoresrevealintellectualimpoverishment.Beyondallthisloomtheapathyandwasteofthecounterculture.Itsexistenceisnolongernews,butitsranksarestillswelledeachyearbythousandsofpatheticrunawaysand,dropouts.

Whatforcesareproducingtheincreasinglyseverestressesontoday'schildren?

Thephenomenoniscomplexandbaffling,butseveraldevelopmentsseemtobeinteracting.Urbanizationisafactor.Childrenwhomighthavemadeitonafarmorinavillage,despiteadversefamilycircumstancessuchasextremepovertyorafather'sdesertion,encounterdisasterinabigcitywithitsanonymityanddiversetemptations.

Birthsbyunwedmothersanddivorce,twotrendsthatarebothrisingsteadily,resultindeprivingchildrenofthestable,twoparentsupportthattheyneedintheirgrowingyears.Oneoutofeverysixchildrenundereighteentodayislivinginasingle-parentfamily.Thisisalmostdoubletheproportionin1950.

Manydivorcedorwidowedparentsobviouslysucceedwiththeirchildren,butideally,rearingachildisatwo-personjob.Whenoneparentismissing,theriskoffailureincreases.Indeed,itisbestifachildhasgrandparentsorothersupportiverelativesonthesceneaswell.Instead,whathashappenedistheneardisappearanceoftheextendedfamilyandthesubstitutionoftelevision,thehopelesslyinadequateelectronicbaby-sitter.

Onestudy,forexample,revealedthatfiftyyearsagohalfofthehouseholdsinMassachusettsincludedatleastoneadultbesidestheparents.Todaythefigureisonly4percent.Inasmallchild'slife,"CaptainKangaroo"isnosubstituteforadevotedgrandmother.

ThebadeffectofthetreatmentAmericanchildrengetstoday______.

A.arenottakenseriously

B.isbeginningtoberecognized

C.hasarousedhotdebates

D.isunquestionable

48.

Accordingtothepassage,whichofthefollowingbehaviorsisfrequentlycharacteristicoffunnelclouds?

A.Descendingfromdifferentcloudbases.

B.Occurringinisolatedareas.

C.Lastingalongtime.

D.Occurringingroups.

49.

WhichfactcanprovewhatNewtonproposedwasright?

A.Thedepartingshipsseemedtobesmallerandsmallerwhentheysailedaway.

B.Thegreateraconcentrationofmassisatthepoles,thestrongeritsgravitationalpull.

C.ThelengthfromEarth'scentertosealevelattheequatorislongerthanthatatthepoles.

D.ThechangesintherisingofafewmillimetersonEarth'ssurfacedetectedbymoderndevices.

50.SectionA

Directions:Inthissection,thereisashortpassagewith5questionsorincompletestatements.Readthepassagecarefully.Thenanswerthequestionsorcompletethestatementsinthefewestpossiblewords.

Thelongyearsoffoodshortageinthiscountryhavesuddenlygivenwaytoapparentabundance.Storesandshopsarechokedwithfood.Rationingisvirtuallysuspended,andoverseassuppliershavebeenaskedtoholdbackdeliveries.Yet,insteadofjoy,thereiswidespreaduneasinessandconfusion.Whydofoodpriceskeeponrising?Whenthereseemstobesomuchmorefoodabout?Istheabundanceonlytemporary,orhasitcometostay?Doesitmeanthatweneedtothinklessnowaboutproducingmorefoodathome?Nooneknowswhattoexpect.

Therecentgrowthexportsurplusesontheworldfoodmarkethascertainlybeenunexpectedlytreat,partlybecauseastrangesequenceoftwosuccessfulgrainharvestsinNorthAmericaisnowbeingfollowedbyathird.MostofBritain'soverseassuppliersofmeat,too,areofferingmorethisyearandhomeproductionhasalsorisen.

Buttheeffectofallthisonthefoodsituationinthiscountryhasbeenmadeworsebysimultaneousriseinfoodprices,duechieflytothegradualcuttingdownofgovernmentsupportforfood.Theshopsareoverstockedwithfoodnotonlybecausethereismorefoodavailablebutalsobecausepeople,frightenedbyhighprices,arebuyinglessofit.

Moreover,theriseindomesticpriceshascomeatatimewhenworldpriceshavebeguntofall,withtheresultthatimportedfood,withtheexceptionofgrain,isoftencheaperthanthehomeproducedvariety.Andnowgrainprices,too,arefalling.Consumersarebeginningtoaskwhytheyshouldnotbeenabledtobenefitfromthistrend.

Thesignificanceofthesedevelopmentsisnotlostonfarmers.Theoldergenerationhasseenitallhappenbefore.Despitethepresentpriceandmarketguarantees,farmersfeartheyareabouttobesqueezedbetweencheapfoodimportsandshrinkinghomemarket.Presentproductionisrunning51percentaboveprewarlevels,andthegovernmenthascalledforanexpansionto60percentby1956.Ministerialadviceiscarryinglittleweightandtheexpansionprogramisnotworkingverywell.

Whyistherewidespreaduneasinessandconfusionwhenthereismorethanenoughfoodtosupply?

51.

Whatdoestheauthorimplybysaying"'PlanetGoogle'takesarisksimilartotryingtoboardaspeedingtrain"'?

A.PlanetGooglewillbeindangerifitstaysuptodateforlong.

B.PlanetGooglehavetotake300yearstocatchthespeedingtrain.

C.TileboardofGooglewelcomesRandallStrosstocoverGooglestory.

D.Awrittenbookcanonlycoveralittlepartoftheon-goingtechnology.

52.AccordingtoSolomonandhercolleagues,howdoeswatervaporaffectglobaltemperature?

A.Globalwarmingsloweddownbecausewatervaporinstratospheredropped.

B.Globalwarmingspeededupbecausewatervaporintroposphereincreased.

C.Globaltemperaturelowereddownbecausewatervaporintropospheredropped.

D.Globaltemperatureroseupbecausewatervaporinstratosphereincreased.

53.SectionA

Directions:Inthissection,thereisapassagewithtenblanks.Youarerequiredtoselectonewordforeachblankfromalistofchoicesgiveninawordbankfollowingthepassage.Readthepassagethroughcarefullybeforemakingyourchoices.Eachchoiceinthebankisidentifiedbyaletter.Pleasemarkthecorrespondingletterforeachitemwithasinglelinethroughthecenter.Youmaynotuseanyofthewordsinthebankmorethanonce.

Forestisacomplexecosysteminwhichtreesarethedominantlifeform.Treedominatedforestscanoccurwhereverthetemperaturesriseabove50°F(10℃)inthewarmestmonthsandtheannual【C1】______ismorethan8in.(200mm).Theycandevelopundervariousconditionswithintheselimits,andthekindofsoil,plant,andanimallifediffersaccordingtotheextremesofenvironmentalinfluences.Incool,high-latitudesubpolarregions,taigaforestsaredominatedby【C2】______conifers(针叶松).Inmoretemperatehigh-latitudeclimates,mixedforestsofbothconifersandbroad-leaveddeciduoustrees【C3】______.Broad-leaveddeciduousforestsdevelopinmidlatitudeclimates.Inhumidequatorialclimates,tropicalrainforestsdevelop.Thereheavyrainfallsupportsevergreensthathavebroadleavesinsteadoftheneedleleavesofcoolerevergreenforests.Forestsareamongthemostcomplexecosystemsintheworld,withextensiveverticallayering.Coniferforestshavethesimpleststructure:atreelayer,ashrublayerthatis【C4】______orevenabsent,andagroundlayercoveredwithlichens,mosses,andliverworts.Deciduousforestsaremorecomplex(thetreecanopyisdividedintoanupperandlowerstory),andrain-forestcanopiesaredividedintoatleastthreelayers.Theforestisnature'smostefficientecosystem,withahighrateof【C5】______affectingbothplantandanimalsystemsincomplexorganicrelationships.

Rainforestislushforest,generallycomposedoftall,broad-leavedtreesandusuallyfoundinwettropicalregionsaroundtheequator.Dependingontheamountofannualrainfall,thetreesmaybeevergreensormainlydeciduous.Theformerrequiremorewater.Soilconditionsvarywithlocationandclimate,thoughmostrain-forestsoilstendtobepermanentlymoistandnotvery【C6】______,becausethehot,humidweathercausesorganicmattertodecomposerapidlyandtobeabsorbedquicklybytreerootsandfung