大學英語四級閱讀理解試題及答案四

大學英語四級閱讀理解試題及答案（四）十六Treesshouldonlybeprunedwhenthereisagoodanclearreasonfordoingso,fortunately;thenumberofreasonsissmall.Pruninginvolvesthecuttingofobergrownbranches,andtheinexperiencedgardenercanbeencouragedbythethoughtthatmoreresultsfromdoingitunnecessarilythanfromleavinthetreetogrowinitsownway.First,pruningmaybedonetosurethattreeshaadesiredshapeorsize.Theobjectbetogetatrrightheight,atthetimetohelpthegrowthosidebrancheswhichwillthickenitsappearanceorgiveispecialshape.Secondly;pruningbedonetottreehealthier.Youcutdiseaedordeadwood,orbranchesthatarerubbingagainsteachotherthuscawounds.Thehealthofatreebeencouragedbyrembranchesthatareblockingthecentresopreventithefreemovementofair.1/resultofpruningisthatanopenisleftthetreethisprovidesaneasyentryfordisease,butthatwillheaLOftenthereisaracebetweenthealingthecfeseaseastowhetherthetreewilllivesothatthereisaperiodwhenthetreeisatrisk.Ittheaimofeverygardenertoreducewhichhasbeenprsmoothclean,forhealingwillbesloweddownbyroughness.Youshouldallowthecutsurfacetodryforahursandthenpaintitwithoneofthesubstancesavailfromgardenshopsproducedespeciallyforthispurpose.PruningisusuallywithoutinterferencefromtheleavesanalsoitisveryunlikelythatthecutsuwillbleeddoeshappenjtofcoursejmpossibletopaintthemproperlyPruningshould.thetreegrowtallerimprovetheshapeofthetreegetridofthesmallbranchesthesmallbranchesthicker2/Treesbecomeunhealthythegardener.allowstoomanybranchestogrowinthemiddleb.notprotectthemfromwindforcesthemtogrowtooquicklyddamagessomeofthesmallsidebranchesWhyisaspecialsubstancepaintedonthetree?TomakeawoundsmoothTopreventdiseaseenteringawoundTocoverroughsurfacecLTohelpatodry4Aa.atintervalsthroughouttheyearasquicklyaspossibleoccasionallywhennecessarydregulareverywinter5.Whatthewhenwritingthis3/

passage?Togivepraticalinstructionforpruningatree.

Togiveageneraldescriptionofpruning

ToexplainhowtreesdevelopdiseasescLTodiscussdifferentmethodsofpruning.答案：十七Carke,dressedforgoingherhandbaghermoneyandherkeyinhertolockandtooverClubShealwayswentthereThursdaysItwasaniceoutingforanoldwomanwholivedAtsixo'shecanehome,letherselfinandatoncecigarette?inherHow?How?Hadgotin?ShethedoorandthewindowsAllwerelockedorfastened,asusua1TherewasnosignofforcedentryOveracupofteashewonderedwhethersomeonemighthaveafittedherfrontdoor-akey

perhapsSoshestayedathomethefollowingThursday.NothinghappenedOnattime,dressedasusual,butshedidn'ttotheclubInst

已adshetookashortcuthomeinherandthebackdoorsettledtowaitwasaftero'clockthe?\Irs?atimebellrangthenheardbeingopenWiththekettleofboilingwaterinherhand,shemovedquietlytowardsfrontdoor?ApieceappearedthroughtheandTheturnedandcaughtaroundtheknobontheMrsClarkeraisedthekettleandpouredwateroverhandThereshoutandtheskintodroplikeaglovewiretothehandandClarkeheardthesoundofrunningfeet4/1?MloodedtoThursdaybecause.a.workedaclubonthedaybshesaidonc.shevisitedaclubonThursdayd?avisitoronThursday2?Ifa__________a.wouldfoundabrokendoororb?heorwasstillinhousec.wouldbeenthowndheorshewouldneededamasterkey3.OnthethirdThursdayMrs?Clarkewentout___________.a.shedidn'twantmisstheagainbtoifthethiefwashngingoutsidec.totheclubthenherminddinantothe4lockthedooronea.apieceofwiretoopenitbhefromakeyc.beopenedakeydusedknobinsteadakey5Thewiretothefloor________?5/a.becauseMrsrefusedopenthebthegloveoffc.becauseittoohottoholddthetoaway答案：十八peoplebelieveglaresnowcauses?Yet,glassesornot,theyfindthemselvesheadacheswateringeyes,whenexposedtoseveralhoursof"snowlight"?TheUnitedhasnowdeterminedthatnotcausesnowblindnessinasnow-coveredman*seyesfindnothingtofoucsonaofbarrensnow-coveredhisgazecontinuallyshiftsandjumpsforthoverthelandscapeinsearchtsomethingtolookat.Findingnothing,hourafterhour,theeyesneversotpsearchingandtheeyeballsbecomesoreandtheeyemusclesacheNatureoffsetsthisirritationbyproducingmoreandfluidcoverstheeyebal1invisionblurs,thenisobsured,andtheresultistotal,eventhoughtemporary,ledArmytoamethodthis?Scoutsofmainbodyoftroopsaretrainedshakesnowfromevergreenbushes,creatingadottedascrossthrow,darkwhichtheytoocanfocusThementhengaze?Theireyesfocusaandfoundsomethingscouringthesnow-blanketedlanscapeByfocusingtheironeathementhesnowsnowblindInproblemcrossingasolidterrainisovercomel.Topreventheadaches,wateringeyesandblindnesscausedbytheglarefromsnow,darkare?a.indispensible6/busefulc.ineffectivedavailable2theeyesaresoretearsaretoa.clearvisionb?c.thed?loosenmuscles3.Snowblindnessmavbebv

&vidingtheeyessomethingfoucsond?thewith4Thescoutssnowevergreenbushesordera.bivemenbehindtoseeb?bthec.warminthecoldd?preventthemenfromlosingway5?Atitleforpassagebe____________.&andhowtoovercomeitb?natrue*scurefor7/hesnowdsnowvision答案：十九WaterproblemsinthefuturewillbecomenoreintenseandmorecomplexOurincreasingwillincreaseurbanwastes,sewage?waterwillsubstantialyofdilutingwastesRapidlyexpandingindustrieswhichinvolvemoreandmorecomplexchemicallargevolumesliquidandofthesecontainwhichnoxiousTofeedourrapidlyexpandingpopulation,agriculturewillintensifiedThisinvolveofagriculturalchemicals,Fromthis,itapparentthatstepsmustbeimmediatelytodevelopfortheTherearetwowaysbywhichthispollutionproblemcanbedwindledThefirstrelatestothetreatmentofwastestopollutionhazard?Thisinvolvestheofwastespriorto"disposalandthetreatmentliquidwastes,orefflunets,topermitthereuseofthewaterorminimizepollutionuponfinaldisposa1AsecondapproachistodevelopaneconomicfororpartofthewastesFarmisinasanutrientsupplementfromusedsomeareasbothEfflunetsfromprocessingplantsmayalsobeusedasasupplementalsourceofwaterManyindustries,suchasmeatprocessingcurrentlyconvertingwaste?industriespotentialeonomicusesforwasteproducts1?Theofpassage_________a.tothereadertodwindlingsupplytoexplainoftoacquaintreaderwithpollutiontovariousmeasurestosolvetheproblem8/2?WhichthepointsisINCLUDEDinpassage?a.theofcomplexprocessesb?Dwastescertainofwaterc.forwaterwillupalongtheexpandingd?Ioflandrequiresmoreandmore3Thereaderconclued?a.countriesoftheworldwillworkonpolutionproblemsb?byproductsfromwastesleadtoamoreprosperousmarketplacec.ismakinggreatprogressonwaterdindustriesnow,akingeconomicofwastes4?Thegivestothethroughtheuseof______________a.withinfieldofcontrolsb?andc.whichimportantdand5words

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(para?2)probablymean.a.bduringc.beforedbeyond9/:二十Oneofthequalitiesthatmostpeopleadmireinisthewillingnesstoone*sItextremelysometimestosaya"Ithat,"anditisevenhardertosay,"Iwaswrong,andyouwereaboutthat〃Ianexperiencerecentlyadmittingtoheamistakeago.HetoldmehebeenacertaingroceryinneighbourhoodwhereIgrewaskedif?ThenrelatedanincidentandIbegantoremembervaguelytheincidenthedescribingIwasabouteightyearsoldatthetime,andIhadintothestorewithmothertodotheweeklygroceryshoppingOnthatparticularday,ImusthavefoundmywaytodairyfooddepartmentwheretheincidenttoodplaceaspecialonbecausethereanimpressiveofindozenandcartonsThecartonsstackedfourfeetIstoppedadisplaytoadmirethestacksJustthenawomancamebycartofForreason,IdecideditwasuptometoputthedisplaybacksoI