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