大学英语四级阅读理解试题及答案Word格式.docx
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2.Treesbecomeunhealthyifthegardener______.a.allowstoomanybranchestogrowinthemiddle
b.doesnotprotectthemfromwind
c.forcesthemtogrowtooquickly
d.damagessomeofthesmallsidebranches
3.Whyisaspecialsubstancepaintedonthetree?
a.Tomakeawoundsmooth
b.Topreventdiseaseenteringawound
c.Tocoveraroughsurface
d.Tohelpawoundtodry
4.Agoodgardenerprunesatree______.
a.atintervalsthroughouttheyear
b.asquicklyaspossible
c.occasionallywhennecessary
d.regulareverywinter
5.Whatwastheauthor'
spurposewhenwritingthispassage?
a.Togivepraticalinstructionforpruningatree.
b.Togiveageneraldescriptionofpruning
c.Toexplainhowtreesdevelopdiseases
d.Todiscussdifferentmethodsofpruning.
答案：
babca
十七
OnThursdayafternoonMrs.Carke,dressedforgoingout,tookherhandbagwithhermoneyandherkeyinit,pulledthedoorbehindhertolockitandwenttotheover60sClub.ShealwayswentthereonThursdays.Itwasaniceoutingforanoldwomanwholivedalone.
Atsixo'
clockshecanehome,letherselfinandatoncesmeltcigarettesmoke.Cigarettesmokeinherhouse?
How?
Hadsomeonegotin?
Shecheckedthebackdoorandthewindows.Allwerelockedorfastened,asusual.Therewasnosignofforcedentry.
Overacupofteashewonderedwhethersomeonemighthaveakeythatfittedherfrontdoor-"
amasterkey"
perhaps.SoshestayedathomethefollowingThursday.Nothinghappened.Wasanyonewatchinghermovements?
OntheThursdayafterthatshe
wentoutatherusualtime,dressedasusual,butshedidn'
tgototheclub.Insteadshetookashortcuthomeagain,lettingherselfinthroughhergardenandthebackdoor.Shesettleddowntowait.
Itwasjustafterfouro'
clockwhenthefrontdoorbellrang.Mrs.Clarkewasmakingacupofteaatthetime.Thebellrangagain,andthensheheardherletter-boxbeingpushedopen.Withthekettleofboilingwaterinherhand,shemovedquietlytowardsthefrontdoor.Alongpieceofwireappearedthroughtheletter-box,andthenahand.Thewireturnedandcaughtaroundtheknobonthedoor-lock.Mrs.Clarkeraisedthekettleandpouredthewateroverthehand.Therewasashoutoutside,andtheskinseemedtodropoffthefingerslikeaglove.Thewirefelltothefloor,thehandwaspulledback,andMrs.Clarkeheardthesoundofrunningfeet.
1.Mrs.ClarkeloodedforwardtoThursdaybecause_______.a.sheworkedataclubontheday
b.shesaidvisitorsonThursdays
c.shevisitedaclubonThursday
d.aspecialvisitorcameonThursday
2.Ifsomeonehadmadeaforcedentery,_______.
a.Mrs.Clarkewouldhavefoundabrokendoororwindowb.heorshewasstillinthehouse
c.thingswouldhavebeenthownabout
d.heorshewouldhaveneededamasterkey
3.OnthethirdThursdayMrs.Clarkewentout_______.a.becauseshedidn'
twanttomisstheclubagainb.toseeifthethiefwashngingaboutoutside
c.totheclubbutthenchangedhermind
d.inanattempttotrickthethief
4.Thelockonthefrontdoorwasonewhich_______.a.neededapieceofwiretoopenit
b.couldheopenedfrominsidewithoutakey
c.could'
tbeopenedwithoutakey
d.usedaknobinsteadofakey
5.Thewirefeeltothefloor_______.
a.becauseMrs.Clarkerefusedtoopenthedoor
b.whentheman'
sglovedroppedoff
c.becauseitwastoohottohold
d.becausethemanjustwantedtogetaway
cadbd
十八
Manypeoplebelievetheglarefromsnowcauses
snowblindnenss.Yet,darkglassesornot,theyfindthemselvessufferingfromheadachesandwateringeyes,andeven
snowblindness,whenexposedtoseveralhoursof"
snowlight"
.TheUnitedStatesArmyhasnowdeterminedthatglarefromsnowdoesnotcausesnowblindnessintroopsinasnow-coveredcountry.Rather,aman'
seyesfrequentlyfindnothingtofoucsoninabroadexpanseofbarrensnow-coveredterrain.Sohisgazecontinuallyshiftsandjumpsbackandforthovertheentirelandscapeinsearchoftsomethingtolookat.Findingnothing,
hourafterhour,theeyesneversotpsearchingandtheeyeballsbecomesoreandtheeyemusclesache.Natureoffsetsthisirritationbyproducingmoreandfluidwhichcoverstheeyeball.Thefluidcoverstheeyeballinincreasingquantityuntilvisionblurs,thenisobsured,andtheresultistotal,eventhoughtemporary,snowblindness.
ExperimentsledtheArmytoasimplemethodofovercomingthisproblem.Scoutsaheadofamainbodyoftroopsaretrainedtoshakesnowfromevergreenbushes,creatingadottedlineastheycrosscompletelysnow-coveredlandscape,Eventhescoutsthemselvesthrowlightweight,darkcoloredobjectsaheadonwhichtheytoocanfocus.Themenfollowingcanthenseesomething.Theirgazeisarrested.Theireyesfocusonabushandhavingfoundsomethingtosee,stopscouringthe
snow-blanketedlanscape.Byfocusingtheirattentionononeobjectatatime,themencancrossthesnowwithoutbecominghopelesslysnowblindorlost.Inthiswaytheproblemofcrossingasolidwhiteterrainisovercome.
1.Topreventheadaches,wateringeyesandblindnesscausedbytheglarefromsnow,darkglassesare_____.
a.indispensible
b.useful
c.ineffective
d.available
2.Whentheeyesaresoretearsareproducedto________.a.clearthevision
b.remedysnowblindness
c.easetheirritation
d.loosenthemuscles
3.Snowblindnessmaybeavoidedby_______.
a.concentratingtothesolidwhiteterrain
b.searchingforsomethingtolookatinsnow-coveredterrain
c.providingtheeyeswithsomethingtofoucsond.coveringtheeyeballswithfluid
4.Thescoutsshakesnowfromevergreenbushesinorderto_______.
a.bivethemenbehindsomethingtosee
b.beautifythelandscape
c.warmthemselvesinthecold
d.preventthemenbehindfromlosingtheirway
5.Asuitabletitleforthispassagewouldbe_______.a.snowblindnessandhowtoovercomeit
b.natrue'
scureforsnowblindness
c.soldiersinthesnow
d.snowvision
CCCAA
十九
Waterproblemsinthefuturewillbecomenoreintenseandmorecomplex.Ourincreasingpopulationwilltremendouslyincreaseurbanwastes,primarilysewage.Ontheotherhand,increasingdemandsforwaterwilldeceasesubstantialytheamountofwateravailablefordilutingwastes.Rapidlyexpandingindustrieswhichinvolvemoreandmorecomplex
chemicalprocesseswillproducelargevolumesofliquidwastes,andmanyofthesewillcontainchemicalswhicharenoxious.Tofeedourrapidlyexpandingpopulation,agriculturewillhavetobeintensified.Thiswillinvolveever-increasingquantitiesofagriculturalchemicals,Fromthis,itisapparentthatdrasticstepsmustbetakenimmediatelytodevelopcorrectivemeasuresforthepollutionproblem.
Therearetwowaysbywhichthispollutionproblemcanbedwindled.Thefirstrelatestothetreatmentofwastestodecreasetheirpollutionhazard.Thisinvolvestheprocessingofsolidwastes"
priorto"
disposalandthetreatmentofliquidwastes,orefflunets,topermitthereuseofthewaterorminimizepollutionuponfinaldisposal.
Asecondapproachistodevelopaneconomicuseforallorapartofthewastes.Farmmanureisspreadinfieldsasanutrientororganicsupplement.Effluentsfromsewagedisposalplantsareusedinsomeareasbothforirrigationandforthenutrientscontained.Efflunetsfromotherprocessingplantsmayalsobeusedasasupplementalsourceofwater.Manyindustries,suchasmeatandpoultryprocessingplants,arecurrentlyconvertingformerwasteproductsintomarketable
byproducts.Otherindustriesarepotentialeonomicusesforwasteproducts.
1.Thepurposeofthispassageis______.
a.toalertthereadertothedwindlingwatersupplyb.toexplainindustrialusesofwater
c.toacquaintthereaderwithwaterpollutionproblemsd.todemostratevariousmeasurestosolvethepollutionproblem
2.WhichofthefollowingpointsisNOTINCLUDEDinthepassage?
a.Industrialdevelopmentincudesthesimplific
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