大學(xué)英語六級改革適用（閱讀）模擬試卷72（共240題）

大學(xué)英語六級改革適用（閱讀）模擬試卷72（共9套）（共240題）大學(xué)英語六級改革適用（閱讀）模擬試卷第1套一、仔細(xì)閱讀(本題共20題，每題1.0分，共20分。)Historianscantracethefoundationsofplasticsurgeryasfarbackasabout2,600yearsagotoancientIndiawherefacialsurgerywerecarriedout.ThetechniqueswererecordedintheearlyHindutextsandwereusedprimarilyonsoldiersinjuredduringconflict.Thebirthofcosmeticreconstructivesurgerytrulyoccurredmanyhundredsofyearslater,andoverthepasttenyearsplasticsurgeryhasbecomeverypopularwithmoreandmorepeoplerefusingtogrowoldgracefully.Itishowevernotlimitedtoyoungwomenconsideringthefacteatingdisordersareontheriseamongyoungmen;menandwomenalikeareinterestedincosmeticsurgeryanditevengainspopularityinmainstreamculture.Itseemsthatnolongerarepeoplejudgedontheirabilitiesalonebutontheirappearance,andmoreandmoreofpeoplearechoosingtogoundertheknifeinanefforttoshapethemselvesintoanobjectiveandarbitraryidealbeauty.The"image"ofbeautyportrayedbythemediaisusuallyrelatedtotheobjectives,young,veryslim,andmostoftenwhite.Havingabodyweightof15%belownormalforone'sheight,ageandweightisconsideredideal.Inotherwordspeopleshouldbeanorexictomeetthemedia'simageofbeauty.Themessageisthatonlytheirimposedimageofbeautyisacceptable,andthosewhoarelarger,shorter,thicker,orbrownerarenot.Thisidealimageandweight,however,isunattainablefor99%ofwomen.Ironically,mostimagesofmodelsappearingonmagazineshavebeenairbrushedtoperfectiontoattainthat"perfect"imageofbeauty.Sadly,formanypeople,thequestforbeautyhasturnedintoanall-outobsession.Unsurprisingly,thenewfoundobsessionisaconvenientmarketingtoolbecause99%ofthefemalepopulationisnotsatisfiedwiththeirappearanceandthereforewillbemorelikelytobuyslimming,cosmeticsorturntoplasticsurgery.Thedietingindustrymakesanincredible$33billionayear.Theindustryusesmediatokeeppeoplethinkingthattheyshouldmaintaintheslenderorevenskinnyshape.Thisimageofbeautyissimplyunattainableandthedesireforitwillneverbemetsothedemandfortheindustrywillneverdecrease.Andtheveryindustriesthatprofitfromfuelinginadequacy,afeelingofnotbeinggoodenough,willcontinuetoprosper.1、Plasticsurgerywasmainlyprovidedfor______atfirst.A、kingsB、queensC、injuredsoldiersD、historians標(biāo)準(zhǔn)答案：C知識點(diǎn)解析：細(xì)節(jié)題。題干問，整形手術(shù)早期主要用于誰身上。原文第一段最后一句，“ThetechniqueswererecordedintheearlyHindutextsandwereusedprimarilyonsoldiersinjuredduringconflict．”早期的印度課本里記錄了這項技術(shù)，并且它主要應(yīng)用在戰(zhàn)爭中受傷的軍人身上。所以，正確答案是C。選項A與B未在文中出現(xiàn)；選項D。為干擾項，出現(xiàn)在開頭，但歷史學(xué)家認(rèn)為此技術(shù)可以追溯到2600年前，而不是應(yīng)用在他們身上。2、Theword"mainstream"(Line5,Para.2)isclosestinmeaningto______.A、dominatedB、worldwideC、standardD、maternal標(biāo)準(zhǔn)答案：A知識點(diǎn)解析：語義題。單詞所在原句為“itevengainspopularityinmainstreamculture．”詞意可以通過聯(lián)系下文推斷出，緊接的一句解釋到，人們不再以能力而是以長相來評價一個人。大多數(shù)人都這樣認(rèn)為，可知是在主流文化中也流行。或者根據(jù)構(gòu)詞法，main(主要的)+stream(溪流)，合成詞為“主流”。主流文化即占主導(dǎo)的文化，所以正確答案是A．“主導(dǎo)的”。選項D，maternal為“母系”的意思。3、Whatistheidealimageofbeautyintheperspectiveofthemassmediaaccordingtothepassage?A、Tall,strongandwhite.B、Elegant,healthyandwhite.C、Short,thickandbrown.D、Young,slimandwhite.標(biāo)準(zhǔn)答案：D知識點(diǎn)解析：細(xì)節(jié)題。根據(jù)題干關(guān)鍵詞“idealimage”，定位于原文第三段第一句，“Theimageofbeautyportrayedbythemediaisusuallyrelatedtotheadjectives，young，veryslim，andmostoftenwhite．”明確指出，大眾媒體描繪的美女形象是，年輕、很苗條、白凈。所以，正確答案是D。選項B為干擾項，優(yōu)雅與健康常常是生活中大家的看法．但并沒有在文中提及。4、Whatistheauthor’sattitudetotheidealimageofbeautyportrayedbymedia?A、Positive.B、Neutral.C、Notclear.D、Negative.標(biāo)準(zhǔn)答案：D知識點(diǎn)解析：態(tài)度題。作者對媒體描繪的理想美女形象持什么態(tài)度?第三段第三句，“Inotherwordspeopleshouldbeanorexictomeetthemedia’simageofbeauty．”意為，也就是說想要達(dá)到媒體宣傳的美的形象，人們要得厭食癥。其次，該段最后一句用詞。ironically“具有諷刺意味的是”。從這兩處可判斷作者持反對態(tài)度。5、Whythemassmediaportrayedtheidealimageinsuchwayaccordingtothepassage?A、Becausethemassmediaareexpectedtosatisfyaudiences.B、Becauseitmotivatesfemalestopursue"thebest"sothatbusinessmencouldmakemoneyfromtheindustry.C、Becauseitgiveswomenmoreconfidenceinthemselves.D、Becausethequestforbeautyliesineveryone’sheart.標(biāo)準(zhǔn)答案：B知識點(diǎn)解析：細(xì)節(jié)題。題干意為，大眾媒體為什么將美女形象刻畫成這樣?根據(jù)原文最后一段．“Thisimageofbeautyissimplyunattainableandthedesireforitwillneverbemetsothedemandfortheindustrywillneverdecrease．Andtheveryindustriesthatprofitfromfuelinginadequacy，afeelingofnotbeinggoodenough，willcontinuetoprosper．”意思是．這種美的形象很難達(dá)到，所以對美的要求也永遠(yuǎn)無法達(dá)到。這樣通過利用不滿足感，產(chǎn)業(yè)會持續(xù)興隆?？芍_答案是B。GeneticEngineeringisaradicalandrapidlydevelopingtechnologythattouchesourlivesthroughitsapplicationinmedicine,forensics,industryandagriculture.ThroughthissciencehumansarefastinbecomingthearchitectsoflifebuttherearethosewhowarnagainsttheunknowndangersofplayingGodwhileothersseeitsbenefitsinourfightagainstdiseaseandtheproductionofabundantfoodsupplies.Inthepast50years,plantandanimalproductionhasincreaseddramatically.Today,thehumanpopulationisthelargestithaseverbeenandfortunatelyweproducemorefoodpercapitathaneverbefore.Despitethefactthatwehaveenoughfoodforeverysinglehumanbeingtohaveanadequatediet,about1billionpeoplestillsufferfrommalnutritionandhunger.Alotoftheincreaseinfoodproductionisattributedtoefficientfarmingmethodsandenvironmentalfactorssuchasirrigation,pestandweedcontrolbutthelargestcontributingfactorismodernplantandanimalbreeding.SowhatareGMfoodsandwhataretheconcernsfortheconsumer?ThemaindifferencebetweenGMfoodsandtraditionalbreedingmethodsisthedirectmodificationormanipulationofcertaingenes.Traditionalmethodsinvolvemixingthousandsofgeneswhereasgeneticmodificationallowsjustoneindividualgene,orasmallnumberofgenes,tobeinsertedintoaplant,oranimal.ThebenefitsofGMfoodsareenormous.Geneticmodificationcanbeusedtogivecropsimmunitytoplantvirusesortoimprovethenutritionalvalueofaplant.Inanimalsintendedforfood,geneticmodificationcouldpotentiallyincreasehowfastandhowbigtheygrow.Starvationonanypartoftheplanetcouldbeathingofthepastaswecouldcontroltheyield,varietiesandsizeoffoodsandproducestrainsthatareresistanttopests,areextremeintemperatureandaretoleranttoherbicides.OpponentsofGMfoodshoweverconsidertheirproductiontobetheworld'sbiggestuncontrolledbiologicalexperiment,adisasterwaitingtohappen.Thebiggestconcernsaretheeffectsthatanuncontrolledgeneticallymodifiedspeciescouldpotentiallyhaveonhumanandanimalhealth,agriculture,andontheenvironmentasawhole.Geneticallymodifiedspecieshavethepotentialtobecomebiologicalpollutantsthatarefarworsethanchemicalpollutantsastheywouldbevirtuallyimpossibletocontrolsincetheyarealive,migrateandcouldmutateproducingevenmoredangerousoffspring.Thiscouldleadtoirreversibledamagetotheecologyoftheplanet.6、Theauthordefinesgeneticengineeringas______.A、abrandnewtechnologythatwillshapeourplanetB、anupdatedtechnologythatmerelybenefithumanbeingsC、adangeroustechnologythatshouldbefunctionedinthelaboratoryD、anewandemergingtechnologythathashadaneffectonmanyaspectsofourlives標(biāo)準(zhǔn)答案：D知識點(diǎn)解析：細(xì)節(jié)題。原文第一段第一句話明確表明，“GeneticEngineeringisaradicalandrapidlydevelopingtechnologythattouchesourlivesthroughitsapplicationinmedicine，forensics，industryandagriculture．”即對應(yīng)選項D，基因工程是一項新出現(xiàn)的技術(shù)．它對我們生活的方方面面產(chǎn)生影響。7、Whatisthemostsignificantelementfortheincreaseinfoodproduction?A、Modernplantandanimalbreeding.B、Efficientfarmingmethods.C、Environmentalfactors.D、Newirrigationsystem.標(biāo)準(zhǔn)答案：A知識點(diǎn)解析：細(xì)節(jié)題。根據(jù)關(guān)鍵詞“increaseinfoodproduction”定位于第二段最后一句，“Alotoftheincreaseinfoodproductionisattributedto…butthelargestcontributingfactorismodernplantandanimalbreeding．”糧食增產(chǎn)歸功于高效的耕作方式和一些環(huán)境因素，但最重要的是現(xiàn)代動植物品種的繁殖，所以，正確答案是A。選項B、C為干擾項，都是原因，但不是主要的因素。8、WhatisthemaindifferencebetweenGeneticEngineeringandtraditionallybredfoods?A、Thedifferenceliesinthemethodsandthenumberofgenes.B、Theyhavedifferentsizeandcolor.C、Traditionalmethodsarenotattractedbyconsumers.D、GeneticEngineeringismoreefficient.標(biāo)準(zhǔn)答案：A知識點(diǎn)解析：細(xì)節(jié)題。原文第四段第二句與第三句，明確指出傳統(tǒng)繁殖和轉(zhuǎn)基因食品的差異在于對特定遺傳因子的直接改良或操作。傳統(tǒng)的方法將數(shù)千種遺傳因子混在一起．而遺傳改良則把一個或少量的遺傳因子注入體內(nèi)?？芍獞?yīng)選A，在方法和基因的數(shù)量上有差別。9、Whydoestheauthorclaimthatstarvationcouldbeathingofthepastinparagraph4?A、BecauseGMisimmunetoplantviruses.B、Thetemperaturecanbemodifiedbyscientists.C、Scientistswillbeabletocontrolthesize,varietyandimmunityofcropsandanimals.D、Peopleareeasilyaccessibletofoodnowadays.標(biāo)準(zhǔn)答案：C知識點(diǎn)解析：細(xì)節(jié)題。原文第四段最后一句，明確指出“Starvationonanypartoftheplanet…andaretoleranttoherbicides．”由于可以控制食品的生產(chǎn)量、變種、規(guī)格等，生產(chǎn)出抗蟲性強(qiáng)，耐溫性強(qiáng)、耐除草劑的物種，饑餓便不復(fù)存在了。選項C與原文大意相符。10、WhatisthemainoppositiontotheproductionofGMfoods?A、Chemicalpollutantsaremoredangerous.B、Thepotentialofproducingharmfuloffspringcouldnotbecontrolled.C、GMfoodsarenotproperlytested.D、Thereleaseoflargerspeciesintotheenvironment.標(biāo)準(zhǔn)答案：B知識點(diǎn)解析：細(xì)節(jié)題。題干問，反對轉(zhuǎn)基因食品的主要理由是?文章第五段，“theywouldbevirtuallyimpossibletocontrol…”，很難去控制轉(zhuǎn)基因中的有害物質(zhì)，所以，正確答案是B。Therecent,apparentlysuccessfulpredictionbymathematicalmodelsofanappearanceofEINino—thewarmoceancurrentthatperiodicallydevelopsalongthePacificcoastofSouthAmerica—hasexcitedresearchers.JacobBjerknespointedoutover20yearsagohowwindsmightcreateeitherabnormallywarmorabnormallycoldwaterintheeasternequatorialPacific.Nonetheless,untilthedevelopmentofthemodelsnoonecouldexplainwhyconditionsshouldregularlyshiftfromonetotheother,ashappensintheperiodicoscillationsbetweenappearancesofthewarmEINinoandthecoldso-calledanti-ElNino.Theanswer,atleastifthecurrentmodelthatlinksthebehavioroftheoceantothatoftheatmosphereiscorrect,istobefoundintheocean.IthaslongbeenknownthatduringanElNino,twoconditionsexist:unusuallywarmwaterextendsalongtheeasternPacific,principallyalongthecoastsofEcuadorandPeru,andwindsblowfromthewestintothewarmerairrisingoverthewarmwaterintheeast.Thesewindstendtocreateafeedbackmechanismbydrivingthewarmersurfacewaterintoa"pile"thatblocksthenormalupwellingofdeeper,coldwaterintheeastandfurtherwarmstheeasternwater,thusstrengtheningthewindstillmore.ThecontributionofthemodelistoshowthatthewindsofanElNino,whichraisesealevelinthecast,simultaneouslysendasignaltothewestloweringsealevel.Accordingtothemodel,thatsignalisgeneratedasanegativeRossbywave,awaveofdepressed,ornegative,sealevel,matmoveswestwardparalleltotheequatorat25to85kilometersperday.TakingmonthstotraversethePacific,RossbywavesmarchtothewesternboundaryofthePacificbasin,whichismodeledasasmoothwallbutinrealityconsistsofquiteirregularislandchains,suchas,thePhilippinesandIndonesia.Whenthewavesmeetthewesternboundary,theyarereflected,andthemodelpredictsthatRossbywaveswillbebrokenintonumerouscoastalKelvinwavescarryingthesamenegativesea-levelsignal.Theseeventuallyshoottowardtheequator,andthenheadeastwardalongtheequatorpropelledbytherotationoftheEarthataspeedofabout250kilometersperday.WhenenoughKelvinwavesofsufficientamplitudearrivefromthewesternPacific,theirnegativesea-levelsignalovercomesthefeedbackmechanismtendingtoraisethesealevel,andtheybegintodrivethesystemintotheoppositecoldmode.Thisproducesagradualshiftinwinds,onethatwilleventuallysendpositivesea-levelRossbywaveswestward,wavesthatwilleventuallyreturnascoldcycle-endingpositiveKelvinwaves,beginninganotherwarmingcycle.11、Whichofthefollowingbestdescribestheorganizationofthefirstparagraph?A、Amodelisdescribedanditsvalueassessed.B、Aresultisreportedanditsimportanceexplained.C、Aphenomenonisnotedanditssignificancedebated.D、Ahypothesisisintroducedandcontraryevidencepresented.標(biāo)準(zhǔn)答案：B知識點(diǎn)解析：推斷題。根據(jù)第一段的整體結(jié)構(gòu)Therecent，apparentlySuccessfulprediction．．．hasexcitedresearchers．．．Nonetheless．untilthedevelopmentofthemodelsnoonecouldexplainwhy…分析．該段首先介紹了數(shù)學(xué)模式對厄爾尼諾現(xiàn)象的發(fā)生進(jìn)行了成功的預(yù)測，這次預(yù)測鼓舞了研究人員。而這些數(shù)學(xué)模式發(fā)展出來之前．沒有人能夠解釋為什么這些狀況發(fā)生期間出現(xiàn)周期性的變化。由這些分析可推知該段的邏輯順序是先報道了一個結(jié)果，然后解釋了它的重要性，和B選項表達(dá)一致。12、Accordingtothepassage,whichofthefollowingfeaturesischaracteristicofanElNino?A、ColdcoastalwaternearPeru.B、Windblowingfromthewest.C、Randomoccurrence.D、Worldwideeffects.標(biāo)準(zhǔn)答案：B知識點(diǎn)解析：細(xì)節(jié)題。聯(lián)系第二段段首對厄爾尼諾現(xiàn)象的解釋IthaslongbeenknownthatduringanElNino，twoconditionsexist：unusuallywarmwaterextendsalongtheeasternPacific，principallyalongthecoastsofEcuadorandPeru，andwindsblowfromthewestintothewarmerairrisingoverthewarmwaterintheeast．“人們早就知道，在厄爾尼諾現(xiàn)象發(fā)生期間，存在兩種現(xiàn)象——一是異常的暖流沿著太平洋東海岸延伸。尤其是沿著厄瓜多爾和秘魯?shù)暮０堆由欤菑奈鞣絹淼募撅L(fēng)吹進(jìn)在東方暖流中產(chǎn)生的更暖的空氣中?！笨芍x項B中windsblowingfromthewest“從西方來的季風(fēng)”是厄爾尼諾現(xiàn)象的一種特征，所以答案選B。13、Whichofthefollowing,iftrue,wouldmostseriouslyunderminethevalidityofthemodelElNinothatispresentedinthepassage?A、ElNinoextendsmuchfartheralongthecoastsofEcuadorandPeruduringsomeyears.B、TherisingofcoldwaterintheeasternPacificdependsonthelocalcharacters.C、ThevariationsinthetimeforRossbywavestocrossthePacificrelyonthewindpower.D、ThePacificirregularwesterncoasthindersmostKelvinwavesfromheadingeastward.標(biāo)準(zhǔn)答案：D知識點(diǎn)解析：細(xì)節(jié)題。根據(jù)第二段最后一句即花費(fèi)數(shù)月時間穿越太平洋后，“羅斯比波波浪”來到太平洋盆地的西部邊緣——該盆地被模擬成平坦的屏障，但實際上包含很不規(guī)則的島嶼群?？芍撃Ｊ揭罁?jù)的是太平洋盆地的西部邊緣是平坦的。而如果不是這樣，則該模式就不正確。通讀答案，D選項內(nèi)容太平洋不規(guī)律規(guī)則的西部海岸阻礙了大多數(shù)開氏波浪流向東部和原文表述一致，所以答案選D。14、Accordingtothemodelpresentedinthepassage,whichofthefollowingnormallysignalsthedisappearanceofanElNino?A、ThearrivalintheeasternPacificofnegativesea-levelKelvinwaves.B、Ashiftinthedirectionofthewindsproducedbyananti-ElNino.C、ThereflectionofKelvinwavesreachingtheeasternborderofthePacific.D、AnincreaseinthespeedatwhichnegativeRossbywavescrossthePacific.標(biāo)準(zhǔn)答案：A知識點(diǎn)解析：推斷題。聯(lián)系原文第二、三段內(nèi)容，第二段介紹了厄爾尼諾現(xiàn)象存在的兩種現(xiàn)象——異常的暖流沿著太平洋東海岸延伸和從西方來的季風(fēng)吹進(jìn)在東方暖流中產(chǎn)生的更暖的空氣中。第三段指出．如果從西部來的“開氏波浪”達(dá)到足夠的量．它們就會克服提升海平面的反饋機(jī)制，促使該機(jī)制變成相反的寒冷模式，進(jìn)而導(dǎo)致季風(fēng)的逐漸轉(zhuǎn)變。最終促使“羅斯比波浪”向西流動．寒冷的“開氏波浪”結(jié)束循環(huán)返回。開始另一個暖流循環(huán)。這說明，“開氏波浪”的返回就預(yù)示著厄爾尼諾現(xiàn)象的結(jié)束。和選項A的表述一致。15、Theprimarypurposeofthetextasawholeisto______.A、introduceanewexplanationofphysicalphenomenonB、explainthedifferencebetweentwonaturalphenomenaC、illustratethelimitsofapplyingmathematicstocomplexproblemsD、clarifythedistinctionbetweenanoldexplanationandanewmodel標(biāo)準(zhǔn)答案：A知識點(diǎn)解析：主旨題。回顧全文。第一段提到了利用數(shù)學(xué)模式對厄爾尼諾現(xiàn)象的發(fā)生進(jìn)行的預(yù)測，接著介紹了該模式的重要性，第二、三段具體介紹了該模式的觀點(diǎn)。這說明，本文主要是在介紹對厄爾尼諾現(xiàn)象的一種新解釋。所以答案選A。Aidedbytherecentabilitytoanalyzesamplesofairtrappedinglaciers,scientistsnowhaveaclearerideaoftherelationshipbetweenatmosphericcompositionandglobaltemperaturechangingoverthepast160,000years.Inparticular,determinationofatmosphericcompositionduringperiodsofglacialexpansionandretreat(coolingandwarming)ispossibleusingdatafromthe2,000meterVostokicecoredrilledinAntarctica.Thetechniqueinvolvedissimilartothatusedinanalyzingcoresofmarinesediments,wheretheratioofthetwocommonisotopesofoxygen,180and160,accuratelyreflectspasttemperaturechanges.IsotopicanalysisofoxygenintheVostokcoresuggestsmeanglobaltemperaturefluctuationsofupto10degreescentigradeoverthepast160,000years.DatafromtheVostokcorealsoindicatethattheamountofcarbondioxidehasfluctuatedwithtemperatureoverthesameperiod:thehigherthetemperature,thehighertheconcentrationofcarbondioxideandthelowerthetemperature,thelowertheconcentration.Althoughchangeincarbondioxidecontentcloselyfollowschangeintemperatureduringperiodsofdeglaciation,itapparentlylagsbehindtemperatureduringperiodsofcooling.Thecorrelationofcarbondioxidewithtemperature,ofcourse,doesnotestablishwhetherchangesinatmosphericcompositioncausingthewarmingandcoolingtrendsorwerecausedbythem.ThecorrelationbetweencarbondioxideandtemperaturethroughouttheVostokrecordisconsistentandpredictable.Theabsolutetemperaturechanges,however,arefrom5to14timesgreaterthanwouldbeexpectedonthebasisofcarbondioxide'sownabilitytoabsorbinfraredradiation,orradiantheat.Thisreactionsuggeststhat,quiteasidefromchangesinheat-trappinggases,commonlyknownasgreenhousegases,certainpositivefeedbacksarealsoamplifyingthetemperaturechange.Suchfeedbacksmightinvolveiceonlandandsea,clouds,orwatervapor,whichalsoabsorbradiantheat.OtherdatafromtheVostokcoreshowthatmethanegasalsocorrelatescloselywithtemperatureandcarbondioxide.Themethaneconcentrationnearlydoubled,forexample,betweenthepeakofthepenultimateglacialperiodandthefollowinginterglacialperiod.Withinthepresentinterglacialperiodithasmorethandoubledinjustthepast300yearsandisrisingrapidly.Althoughtheconcentrationofatmosphericmethaneismorethantwoordersofmagnitudelowerthanthatofcarbondioxide,itcannotbeignored:theradiativepropertiesofmethanemakeit20timesmoreeffective,moleculeformolecule,thancarbondioxideinabsorbingradiantheat.Onthebasisofasimulationmodelthatclimatologicalresearchershavedeveloped,methaneappearstohavebeenabout25percentasimportantascarbondioxideinthewarmingthattookplaceduringthemostrecentglacialretreat8,000to10,000yearsago.16、Theprimarypurposeofthepassageisto______.A、interpretdataB、explainresearchmethodologyC、evaluateaconclusionD、suggestanewtechnique標(biāo)準(zhǔn)答案：A知識點(diǎn)解析：主旨題。根據(jù)文章第一、二、四段的首句Aidedbytherecentabilitytoanalyzesamplesofairtrappedinglaciers，scientistsnowhaveacleareridea…，DatafromtheVostolkcorealsoindicatethat…．OtherdatafromtheVostokcoreshowthat…可以把握文章的主要目的是科學(xué)家通過對困在冰川中的空氣樣品進(jìn)行分析．對大氣構(gòu)成與全球氣溫變化之間的關(guān)系進(jìn)行解釋說明。簡而言之，就是“解釋數(shù)據(jù)”，和A選項表達(dá)一致。17、Accordingtothepassage,whichofthefollowingstatementsbestdescribestherelationshipbetweencarbondioxideandglobaltemperature?A、Carbondioxidelevelschangeimmediatelyinresponsetochangesintemperature.B、Carbondioxidelevelscorrelatewithglobaltemperatureduringcoolingperiodsonly.C、Duringcoolingperiods,carbondioxidelevelsinitiallyremainhighandthendecline.D、Carbondioxidelevelsincreasemorequicklythanglobaltemperaturedoes.標(biāo)準(zhǔn)答案：C知識點(diǎn)解析：細(xì)節(jié)題。根據(jù)“therelationshipbetweencarbondioxideandglobaltemperature”定位到文章第二段。Althoughchangeincarbondioxidecontentcloselyfollowschangeintemperatureduringperiodsofdeglaciation，itapparentlylagsbehindtemperatureduringperiodsofcooling．“盡管在冰川消退期，二氧化碳含量的變化緊隨著氣溫的變化，但在降溫期，二氧化碳含量的變化顯然滯后于氣溫?！闭f明降溫期二氧化碳含量先升后降，比氣溫下降慢一步，和選項C表述一致，所以C為正確答案。同時也排除了A“二氧化碳對氣溫變化做出的反應(yīng)是迅速的”和B“二氧化碳含量僅在降溫期和氣溫有關(guān)”。D“二氧化碳比氣溫升得更快”屬于無中生有。所以答案選C。18、Theauthormentions"certainpositivefeedbacks"(Line6,Para.3)inordertoindicatethat______.A、increasedconcentrationofcarbondioxideintheEarth’satmosphereisresponsibleforglobaltemperatureincreaseB、someclimatesimulationmodelshaveproducedusefulinformationC、greenhousegasesalonedonotaccountforglobaltemperatureincreaseD、variablesthatbenefitlifearecausingglobaltemperaturetoincrease標(biāo)準(zhǔn)答案：C知識點(diǎn)解析：細(xì)節(jié)題。根據(jù)第三段Thisreactionsuggeststhat，quiteasidefromchangesinheat—trappinggases，commonlyknownasgreenhousegases，certainpositivefeedbacksarealsoamplifyingthetemperaturechange．Suchfeedbacksmightinvolveiceonlandandsea，clouds，orwatervapor，whichalsoabsorbradiantheat．“這種關(guān)系表明，除了捕熱氣體(即通常所稱為的溫室氣體)以外，某些正反饋也會擴(kuò)大溫度變化。此類反饋可能涉及陸地上和海洋中的冰、云或水蒸氣，它們也都會吸收輻射熱?！笨芍粌H僅是溫室氣體導(dǎo)致了溫度升高．某些正反饋也是原因之一。C選項和原文表述一致。所以答案選C。19、Accordingtothepassage,whichofthefollowingstatementsaboutmethaneistrue?A、Methaneisfoundinmarinesediments.B、Methaneismoreeffectivethancarbondioxideinabsorbingradiantheat.C、TheEarth’satmospherenowcontainsmorethantwiceasmuchmethaneasitdoescarbondioxide.D、ThehighertheconcentrationofcarbondioxideintheEarth’satmosphere,thelowertheconcentrationofmethane.標(biāo)準(zhǔn)答案：B知識點(diǎn)解析：細(xì)節(jié)題。根據(jù)“methane”定位到第四段。根據(jù)Althoughtheconcentrationofatmosphericmethaneismorethantwoordersofmagnitudelowerthanthatofcarbondioxide，itcannotbeignored：theradiativepropertiesofmethanemakeit20timesmoreeffective，moleculeformolecule，thancarbondioxideinabsorbingradiantheat．“盡管大氣甲烷的含量要比二氧化碳的含量低兩個多數(shù)量級，但它仍不能被忽視：就分子與分子相對比，甲烷的輻射特性使其在吸收輻射熱這方面，要比二氧化碳強(qiáng)出20倍?！闭f明甲烷在吸收輻射熱這方面比二氧化碳有效。和選項B的表述一致，所以答案是B。A“甲烷是在海洋沉積物中發(fā)現(xiàn)的”原文沒有提及．C是對原文“甲烷的含量幾乎翻了一倍。在目前的間冰期范圍內(nèi)，它在過去短短的300年就已經(jīng)增加了兩倍多，并正在迅速增長”的誤解，D“二氧化碳含量越高，甲烷含量越低”也沒有提及。20、ThepassagesuggeststhatwhenthemethaneconcentrationintheEarth’satmospheredecreases,whichofthefollowingalsohappens?A、Glaciersmeltfaster.B、Theconcentrationofcarbondioxideincreases.C、Carbondioxideabsorbsmoreradiantbeat.D、Theglobaltemperaturedecreases.標(biāo)準(zhǔn)答案：D知識點(diǎn)解析：推斷題。根據(jù)文章最后一段的最后一個例子“從氣候?qū)W研究者所建立的某個模擬模型來看，在8000至10000年之前的最近一次冰川稍退期間發(fā)生的升溫過程中，甲烷似乎發(fā)揮了相等于二氧化碳25％的重要作用?！笨芍獪囟壬?，甲烷含量升高，二者關(guān)系是正相關(guān)。那么如果甲烷含量下降，溫度應(yīng)該會降低．所以答案選D。大學(xué)英語六級改革適用（閱讀）模擬試卷第2套一、仔細(xì)閱讀(本題共20題，每題1.0分，共20分。)Iamoneofthemanycitypeoplewhoarealwayssayingthatgiventhechoiceweshouldprefertoliveinthecountryawayfromthedirtandnoiseofalargecity.Ihavemanagedtoconvincemyselfthatifitweren'tformyjobIwouldimmediatelyheadoutfortheopenspacesandgobacktonatureinsomesleepyvillageburiedinthecountry.Buthowrealisticisthedream?Citiescanbefrighteningplaces.Themajorityofthepopulationliveinmassivetowerblocks,noisy,dirtyandimpersonal.Thesenseofbelongingtoacommunitytendstodisappearwhenyoulivefifteenfloorsup.Allyoucanseefromyourwindowsissky,orotherblocksofflats.Childrenbecomeaggressiveandnervous—coopedupathomeallday,withnowheretoplay;theirmothersfeelisolatedfromtherestoftheworld.Strangelyenough,whereasinthepasttheinhabitantsofonestreetallkneweachother,nowadayspeopleonthesamefloorintowerblocksdon'tevensayhellotoeachother.Countrylife,ontheotherhand,differsfromthiskindofisolatedexistenceinthatasenseofcommunitygenerallybindstheinhabitantsofsmallvillagestogether.Peoplehavetheadvantageofknowingthatthereisalwayssomeonetoturntowhentheyneedhelp.Butcountrylifehasdisadvantagestoo.Whileitistruethatyoumaybeamongfriendsinavillage,itisalsotruethatyouarefromtheexcitingandimportanteventsthattakeplaceincities.There'slittlepossibilityofgoingtoanewshoworthelatestmovie.Shoppingbecomesamajorproblem,andforanythingslightlyoutoftheordinaryyouhavetogoonanexpeditiontothenearestlargetown.Thecity-dwellerwholeavesforthecountryisoftenoppressedbyasenseofunbearablestillnessandquiet.What,then,istheanswer?Thecountryhastheadvantageofpeaceandquiet,butsuffersfromthedisadvantageofbeingcutoff;thecitybreedsafeelingofisolation,andconstantnoisebattersthesenses.Butoneofitsmainadvantagesisthatyouareatthecentreofthings;andthatlifedoesn'tcometoanendathalfpastnineatnight.Somepeoplehavefound(orratherbought)acompromisebetweenthetwo:theyhaveexpressedtheirpreferenceforthe"quietlife"byleavingthesuburbsandmovingtovillageswithincommutingdistanceoflargecities.Theygenerallyhaveaboutasmuchsensitivityastheplasticflowerstheyleavebehind—theyarepollutedwithstrangeideasaboutchangeandimprovementwhichtheyforceontotheunwillingoriginalinhabitantsofthevillages.1、Whatisthemainideaofthefirstparagraph?A、Largecitiesaredirtyandnoisy.B、Ajobisveryimportantfor"me".C、Manycitypeopleprefervillagetocity.D、Villagesaretidyandpeaceful.標(biāo)準(zhǔn)答案：C知識點(diǎn)解析：主旨題。文章開頭講到，“許多市民說，給他們一個機(jī)會他們寧愿住在鄉(xiāng)下．遠(yuǎn)離骯臟而又嘈雜的大城市”，接著講到作者自己也這樣認(rèn)為，因此，第一段主要內(nèi)容是與城市相比。很多市民更喜歡鄉(xiāng)下。C項符合題意。2、Accordingtotheauthor,whyarecitiesfrightening?A、Becausethepressureofworkmaymakepeoplesuffer.B、Becausemanyblocksincityaredirty,noisyandimpersonal.C、Becauseit’shardtofindagoodjobincity.D、Becauselivinginacityisnotsafe.標(biāo)準(zhǔn)答案：B知識點(diǎn)解析：細(xì)節(jié)題。根據(jù)題目中的“citiesfrightening”可定位至第二段前兩句“Citiescanbefrighteningplaces．Themajorityofthepopulationliveinmassivetowerblocks，noisy，dirtyandimpersonal．”由此可知，作者認(rèn)為城市可怕是因為城市嘈雜、骯臟而又沒有人情味。其它選項內(nèi)容文章均未提到。3、Whichofthefollowingisnotthedisadvantageofcountrylife?A、Itisinconvenienttobuysomething.B、Villagerscan’tenjoytheexcitingevents.C、Villagershavelittleopportunitytoseeafilm.D、Therearemanyfriendsaroundeachvillager.標(biāo)準(zhǔn)答案：D知識點(diǎn)解析：細(xì)節(jié)題。根據(jù)題干中的“thedisadvantageofcountrylife”可定位至第三段，第三段提到“itisalsotruethatyouarefromtheexcitingandimportanteventsthattakeplaceincities．There’slittlepossibilityofgoingtoanewshoworthelatestmovie．Shoppingbecomesamajorproblem”，A、B、C三項均符合文意，根據(jù)第三段第四句“Whileitistruethatyoumaybeamongfriendsinavillage，itisalsotruethat…”可知，生活在大幫朋友間并非缺點(diǎn)。4、Whatdoesthelastsentenceofthispassagemean?A、Citypeoplewanttochangecountrylife.B、Citypeoplewanttocombinetheadvantagesofcityandvillage.C、Villagesdon’twelcomecitypeople.D、Citypeopledon’tconcernthefeelingofvillagers.標(biāo)準(zhǔn)答案：B知識點(diǎn)解析：推斷題。文章最后一句意為“他們被有關(guān)改善和改變的奇怪思想影響了，而這些思想是他們強(qiáng)加給村里不愿改變的原始居民的?！蔽恼伦詈笠欢沃v到，鄉(xiāng)村生活和城市生活各有優(yōu)點(diǎn)，有些人在鄉(xiāng)下和城市間找到了折中的辦法，也就是將兩種優(yōu)點(diǎn)結(jié)合起來，而將城市的優(yōu)點(diǎn)帶到鄉(xiāng)下，對于村民來說是強(qiáng)加于他們身上的。故此句意味著市民想要將城市的優(yōu)點(diǎn)和鄉(xiāng)村的優(yōu)點(diǎn)結(jié)合起來，B項符合。5、Thebesttitleofthepassagemaybe______.A、CountryLifeHasManyAdvantagesB、CityPeoplePreferVillagetoCityC、CountryLifeandCityLifeD、CityLifeisBetterThanCountryLife標(biāo)準(zhǔn)答案：C知識點(diǎn)解析：主旨題。本文將城市生活和鄉(xiāng)村生活進(jìn)行了對比，二者各有優(yōu)缺點(diǎn)，城市骯臟、嘈雜、沒有人情味，但每個人都是世界的中心，而鄉(xiāng)村生活雖然安靜、人情味濃郁，但購物不便，也無法享受大城市的一些激動人心的重要的活動。選項中，C項“鄉(xiāng)村與城市生活”最能概述文章大意，故選擇C。Massivechangesinalloftheworld'sdeeplycherishedsportinghabitsareunderway.Whetherit'soneofLondon'sparksfullofpeopleplayingsoftball,andRussianstakinguprugby,ortheSuperbowlrivallingtheFootballCupfinalasatelevisedspectatoreventinBritain,thepatternsofplayersandspectatorsarechangingbeyondrecognition.Wearewitnessaglobalizationofoursportingculture.Thatannualbicyclerace,theTourdeFrance,muchlovedbytheFrenchisagoodcaseinpoint.JustafewyearsbackitwasastrictlycontinentalaffairwithFranceBelgiumandHolland,SpainandItalytakingpart.ButinrecentyearsithasbeendominatedbyColombianmountainclimbers,andAmeri