英语六级冲刺阅读训练及答案20篇.docx

英语六级冲刺阅读训练及答案20篇.docx

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英语六级冲刺阅读训练及答案20篇

一

TheEarthcomprisesthreeprincipallayers:

thedense,iron-richcore,themantlemadeofsilicate（硅酸盐）thataresemi-moltenatdepth,andthethin,solid-surfacecrustTherearetwokindsofcrust,aloweranddenseroceaniccrustandanupper，lightercontinentalcrustfoundoveronlyabout40percentoftheEarth'ssurface.Therocksofthecrustareofverydifferentages.Somecontinentalrocksareover3,000millionyearsold,whilethoseoftheoceanfloorarelessthan200millionyearsold.Thecrustsandthetop,solidpartofthemantle,totalingabout70to100kilometersinthickness,atpresentappeartoconsistofabout15rigidplates,7ofwhichareverylarge.Theseplatesmoveoverthesemi-moltenlowermantletoproduceallofthemajortopographical（地形学的）featuresoftheEarth.Activezoneswhereintensedeformationoccurareconfinedtothenarrow,interconnectingboundariesofcontactoftheplates.

　　Therearethreemaintypesofzonesofcontact:

spreadingcontactswhereplatesmoveapart,convergingcontactswhereplatesmovetowardseachother,andtransformcontactswhereplatesslidepasteachother.NewoceaniccrustisformedalongoneormoremarginsofeachplatebymaterialissuingfromdeeperlayersoftheEarth'scrust,forexample,byvolcaniceruptions（爆发）oflava（火山熔岩）atmid-oceanridges.Ifatsuchaspreadingcontactthetwoplatessupportcontinents，arift（裂缝）isformedthatwillgraduallywidenandbecomefloodedbythetea.TheAtlanticOceanformedlikethisastheAmericanandAfro-Europeanplatesmovedinoppositedirections.Whentwoplatescarryingcontinentscollide,thecontinentalblocks,toolighttobedrawndown,continuetofloatandthereforebuckle（起褶皱）toformamountainchainalongthelengthofthemarginoftheplates.

　　练习题：

　　Choosecorrectanswerstothequestion:

　　1.TheEarth’scrust______.

　　A.canbeclassifiedintotwotypes

　　B.isformedalongthemarginsoftheplates

　　C.consistsofsemi-moltenrocks

　　D.isabout70to100kilometersthick

　　2.The15platesoftheEarthareformedfrom___.

　　A.theoceaniccrustsandcontinentalcrusts

　　B.thecrustsandthemantle

　　C.thecrustsandthetopandsolidpartofthemantle

　　D.thecontinentalcrustsandthesolidpartofthemantle

　　3.Seriously-deformedzonesappear_______

　　A.wheneverthecrustsmoveovermantle

　　B.whentheplatesmovetowardseachother

　　C.inthenarrowboundarieswheretwoplatesmeet

　　D.tobethemajortopographicalfeatureoftheEarth

　　4.Accordingtothesecondparagraph,theformationoftheAtlanticOceanistheexampleof_______.

　　A.spreadingcontacts

　　B.theinfluenceofvolcaniceruptions

　　C.convergingcontacts

　　D.transformcontacts

　　5.Thispassageisprobably_______.

　　A.anewspaperadvertisement

　　B.achapterofanovel

　　C.anexcerptfromatextbook

D.ascientificreportofnewfindings

二

AremarkablevarietyofinsectsliveinthisplanetMorespeciesofinsectsexistthanallotheranimalspeciestogether.Insectshavesurvivedonearthformorethan300millionyears,andmaypossesstheabilitytosurviveformillionsmore.

　　Insectscanbefoundalmosteverywhere--onthehighestmountainsandonthebottomofrushingstreams,inthecoldSouthPoleandinbubblinghotsprings.Theydigthroughtheground,jumpandsinginthetrees,andrunanddanceintheair.Theycomeinmanydifferentcolorsandvariousshapes.Insectsareextremelyusefultohumans,pollinating（授粉）ourcropsaswellasflowersinmeadows,forests,desertsandotherareas.Butlicksandsomeinsects,suchasmosquitoesandfleas,cantransmitdisease.

　　Therearemanyreasonswhyinsectsaresosuccessfulatsurviving.Theiramazingabilitytoadaptpermitsthemtoliveinextremerangesoftemperaturesandenvironments.Theoneplacetheyhavenotyetbeenfoundtoanymajorextentisintheopenoceans.Insectscansurviveonawiderange,ofnaturalandartificialfoods—paint,pepper,glue,books,grain,cotton，otherinsects,plantsandanimalsBecausetheyaresmalltheycanhideintinyspaces.

　　Astrong,hardbutflexibleshellcoverstheirsoftorgansandisresistanttochemicals,waterandphysicalimpact.Theirwingsgivethemtheoptionofflyingawayfromdangeroussituationsortowardfoodormales.Also,insectshaveanenormousreproductivecapacity:

AnAfricanantqueencanlayasmanyas43,000eggsaday.

　　Anotherreasonfortheirsuccessisthestrategyofprotectivecolor.Aninsectmayberightbeforeoureyes,butnearlyinvisiblebecauseitiscleverlydisguisedlikeagreenleaf,lumpofbrownsoil,graylichen（青苔）,aseedorsomeothernaturalobjectSomeinsectsusebright,boldcolorstosendwarningsignalsthattheytastebad,stingorarepoison.Othershavewingpatternsthatlookliketheeyesofahugepredator,bitter-tastinginsects;hungryenemiesarefooledintoavoidingthem.

　　练习题：

　　Choosecorrectanswerstothequestion:

　　1.InsectscanbefoundinlargeamountsinthefollowingplacesEXCEPT_____.

　　A.onthemountainswithlittleair

　　B.inthecoldpolarareas

　　C.inthehotdesertareas

　　D.intheopenoceans

　　2.Insectsprotectthemselvesfromchemicalsby_______

　　A.hidingintinyspaces

　　B.havingastrongshell

　　C.flyingawaywhennecessary

　　D.changingcolorsorshapes

　　3.Someinsectsdisguiselikenaturalobjectssoasto______

　　A.frightenawaytheirenemies

　　B.avoidbeingdiscovered

　　C.sendwarningsignals

　　D.lookbitter-tasting

　　4.Thepassagementionsthatinsects______.

　　A.canbefoundinanyextremeenvironments

　　B.havesurvivedlongerthananyothercreatures

　　C.canbefedonanynaturalorman-madefoods

　　D.areimportantforthegrowthofcropsandflowers

　　5.Thepassageismainlyabout______

　　A.howinsectssurviveindifferentplaces

　　B.whyinsectscansurvivesosuccessfully

　　C.whatinsectscandototheenvironment

　　D.whereinsectscanbefoundinquantity

三

Thefridgeisconsiderednecessary.Ithasbeensosincethe1960swhenpackagedfoodlistappearedwiththelabel:

"Storeintherefrigerator."

　　InmyfridgelessFiftieschildhood,1wasfedwellandhealthy.Themilkmancameeveryday,thegrocer,thebutcher（肉商）,thebaker,andtheice-creammandeliveredtwoorthreetimeseachweek.TheSundaymeatwouldlastuntilWednesdayandsurplus（剩余的）breadandmilkbecameallkindsofcakes.Nothingwaswasted,andwewerenevertroubledbyrottenfood.Thirtyyearsonfooddeliverieshaveceased,freshvegetablesarealmostunobtainableinthecountry.

　　Theinventionofthefridgecontributedcomparativelylittletotheartoffoodpreservation.Manywell-triedtechniquesalreadyexisted--naturalcooling,drying,smoking,salting,sugaring,bottling...

　　Whatrefrigerationdidpromotewasmarketing---marketinghardwareandelectricity,marketingsoftdrinks,marketingdeadbodiesofanimalsaroundtheworldinsearchofagoodprice.

　　Consequently,mostoftheworld'sfridgesaretobefound,notinthetropicswheretheymightproveuseful,butintherichcountrieswithmildtemperatureswheretheyareclimaticallyalmostunnecessary.Everywinter,millionsoffridgeshumawaycontinuously,andatvastexpense,busilymaintaininganartificially-cooledspaceinsideanartificially-heatedhouse--whileoutside,natureprovidesthedesiredtemperaturefreeofcharge.

　　Thefridge'seffectupontheenvironmenthasbeenevident,whileitscontributiontohumanhappinesshasbeennotimportant.Ifyoudon'tbelieveme,tryityourself,investinafoodcabinetandmmoffyourfridgenextwinter.Youmaynoteatthehamburgers（汉堡包）,butatleastyou'llgetridofthatterriblehum.

　　练习题：

　　Choosecorrectanswerstothequestion:

　　1.Thestatement"Inmyfridgelessfiftieschildhood,Iwasfedwellandhealthily."suggeststhat______.

　　A.theauthorwaswell-fedandhealthyevenwithoutafridgeinhisfifties.

　　B.theauthorwasnotaccustomedtofridgeseveninhisfifties.

　　C.therewasnofridgeintheauthor'shomeinthe1950s.

　　D.thefridgewasinitsearlystageofdevelopmentinthe1950s.

　　2.Whydoestheauthorsaythatnothingwaswastedbeforetheinventionoffridges?

　　A.Peoplewouldnotbuymorefoodthanwasnecessary.

　　B.Foodwasdeliveredtopeopletwoorthreetimesaweek.

　　C.Foodwassoldfreshanddidnotgetrotteneasily.

　　D.Peoplehadeffectivewaystopreservetheirfood.

　　3.Whobenefitedtheleastfromfridgesaccordingtotheauthor?

　　A.Inventors.

　　B.Consumers.

　　C.Manufacturers.

　　D.Travellingsalesmen.

　　4.Whichofthefollowingphrasesinthefifthparagraphindicatesthefridge'snegativeeffectontheenvironment?

　　A.“Humawaycontinuously”.

　　B.“Climaticallyalmostunnecessary”.

　　C.“Artificially-cooledspace”.

　　D.“Withmildtemperatures”.

　　5.Whatistheauthor'soverallattitudetowardfridges?

　　A.Neutral.

　　B.Critical.

　　C.Objective.

　　D.Compromising.

四

Moreover,insofarasanyinterpretationofitsauthorcanbemadefromthefiveorsixplaysattributedtohim,theWakefieldMasterisuniformlyconsideredtobeamanofsharpcontemporaryobservation.Hewas,formally,perhapsclericallyeducated,ashisLatinandmusic,hisBiblicalandpatristicloreindicate.Heis,still,celebratedmainlyforhisquicksympathyfortheoppressedandforgottenman,hissharpeyeforcharacter,areadyearforcolloquialvernacularturnsofspeechandahumoralternatelyrudeandboisterous,coarseandhappy.Hencedespitehisconsciousartistryasmanifestinhisfeelingforintricatemetricalandstanzaforms,heislookeduponasakindofmedievalSteinbeck,indignantlyangryat,uncompromisinglyandevenbrutallyrealisticinpresentingtheplightoftheagriculturalpoor.

　　Thustakingtheplayandtheauthortogether,i