高三英语阅读理解(科普环保)试题(有答案和解析)

高三英语阅读理解(科普环保)试题(有答案和解析)一、高中英语阅读理解科普环保类1．犇犇阅读下面文章，然后从题中所给的A、B、C、D四个选项中，选出每个问题的最佳选项。

Whenweseeapersonintrouble,thefirstideathatcomestoourmindistolendahand.Butwhatifweseeananimalintrouble,doesthesameruleapply?

Thisquestionwasraisedafteragroupofpenguinsweresavedfromanicygully(峡谷)inAntarctica.ItwasfilmedfortheBBCwildlifeseriesDynasties.Thefilmcrewwereanxiouswhentheysawthatagroupofpenguinshadfallenintoagullyandbeentrappedwiththeiryoung.Theybuiltaslope(斜坡)sothatafewofthepenguinscouldsavethemselves.

Thecasehastakentheinternationalmediabystorm.Viewerswatchingthisfilmletoutasighofrelief."I'msoglad.Iunderstandnottakingactiondirectly,butahelpinghandisn'tbothering,right?"viewerKathrynShawsaidonherFacebook.

However,othersthinkhumaninterference(干涉)isunnatural."Youcan'thavesunshinethroughoutyourlife.Tohavedoneanythingelsewouldonlymakemattersworse,"saidtheshow'screatorDavidAttenborough,accordingtoTheTimes.

Inthiscase,however,MikeGunton,theexecutiveproduceroftheseries,saidthatthiswasaone-offsituation."Therewerenoanimalsgoingtosufferbyinterfering.Youweren'ttouchingtheanimalsanditwasjustfeltbydoingthis...theyhadthechancenottohavetokeepslippingdowntheslope,"hetoldtheBBC.

SuchcasesarefamiliartoPaulNicklen,wildlifephotographerforNationalGeographic.HetoldMetro,"Ifit'severapredator(捕食者)situation,nomatterhowgut-wrenching,youstayoutoftheway.Evenwhenyou'rewatchingamalepolarbeareatababybear."

"There'snorulebookinthosesituations.Youcanonlyrespondtothefactsthatarerightthereinfrontofyou,"WillLawson,theshow'sdirector,toldDailyMail.（1）Whathasledtoaheatedmediadiscussion?A.People'svariousremarksonpenguins.B.Therescueofpenguinsfromagully.C.Somepenguins'sufferingsinagully.D.WaysoffilmingtheseriesDynasties.（2）Whoholdsapositiveattitudetowardshumaninterference?A.KathrynShaw.B.WillLawson.C.PaulNieklen.D.DavidAttenborough.（3）Whichofthefollowingbestexplainstheword"gut-wrenching"underlinedinparagraph6?A.Puttingoneinplace.B.Makingoneconfused.C.Puttingoneindanger.D.Makingoneheartbroken.（4）Whatcanbeasuitabletitleforthetext?A.ReasonsfortheNecessityofLendingaHandtoAnimalsB.SuggestionsonHowtoProtectAnimalsFromDangerC.EffectsofHumanInterferenceonDangerousAnimalsD.OpinionsonWhethertoHelpAnimalsinTroubleorNot【答案】（1）B（2）A（3）D（4）B【解析】【分析】本文是一篇说明文，介绍了当动物们面临危险时，我们是否要伸出援救之手，以及如何去保护它们脱险。（1）考查细节理解。根据第二段中的“Thefilmcrewwereanxiouswhentheysawthatagroupofpenguinshadfallenintoagullyandbeentrappedwiththeiryoung.Theybuiltaslope（斜坡）sothatafewofthepenguinscouldsavethemselves.”和第三段中的“Thecasehastakentheinternationalmediabystorm”可知，从峡谷中救出企鹅这一事件引起了大家的热议。故选B。（2）考查推理判断。根据第三段中的“I'msoglad.Iunderstandnottakingactiondirectly,butahelpinghandisn'tbothering,right?"viewerKathrynShawsaidonherFacebook.”可知，她对帮助动物是很赞成的，故选A。（3）考查词义猜测。根据上文大家对干涉动物的行为有不同观点，再结合下文的“youstayoutoftheway.Evenwhenyou'rewatchingamalepolarbeareatababybear."可知，此句句意为：如果这是个捕食的情景，无论你是多么的心碎，你都不能干预。结合四个选项可知，此处用Makingoneheartbroken（心碎）最合句意。故选D。（4）考查主旨大意。本文就救助企鹅的视频引发的热议讲述了当动物面临危险时，我们如何伸出援助之手给出了一些建议。因此，本文的最佳标题应为“若何保护动物脱险的建议”。故选B。【点评】本题考点涉及细节理解，词义猜测，推理判断和主旨大意四个题型的考查，是一篇科教类阅读，要求考生在捕捉细节信息的基础上，进一步根据上下文的逻辑关系，进行分析，推理，概括和归纳，从而选出正确答案。2．犇犇阅读理解

Slowlybutsurely

we'removingcloserandcloserto5Gworld.Fromsmart-homesecuritytoself-drivingcars,alltheinternet-connecteddevicesinyourlifewillbeabletotalktoeachotheratlightning-fastspeedswithreduceddelay,Objectivelyspeaking,thefastest4GdownloadspeedsintheU.S.topoutatanaverageof19.42Mbps.Butbycomparison5Gpromisesgigabit(千兆)speeds.

“5Gisoneofthosesigns,alongwithartificialintelligence,ofthiscomingdataage,”saidSteveKoenig,seniordirectorofmarketresearchfortheConsumerTechnologyAssociation.“Theself-drivingvehicleisagreatemblemofthisdataage,andthatistosay,itisasignoftime,becausewithonesingletask,driving,youhavemassiveamountsofdatacomingfromthevehicleitself,andavarietyofsensorsarecollectingalotofinformationtomodelitsenvironmentasitmoves.It'spullingindatafromothervehiclesaboutroadconditionsdownthelane.Itcouldbeweatherinformation,butalsoconnectedinfrastructure(基础设施)construction.There'slotsofdatabehindthattask,whichiswhyweneedhighspeed.

Augmentedrealityglassesandvirtualheadsethaven'tyetbrokenthemainstream,buttechcompaniesarejoyfullybettingthatthesedeviceswilleventuallyreplaceoursmartphones.With5G,thatcouldactuallyhappen.ThisisnotablebecausecompaniessuchasApplearereportedlydevelopingARglassestoassist—orperhapsevenreplace—smartphones.

EricssonstatedatFebruary'sMobileWorldCongresshowsmartglassescouldbecomefasterandlighterwitha5Gconnection,becauseinsteadofbeingweigheddownwithcomponents,theglassescouldrelyonhardwareforprocessingpower.

Butdon'tgettooexcited.There'sstillalotofworktobedoneinthemeantime,includingvarioustrialstomakesuretheradiosplaynicelywithhardwareandinfrastructureconstructionso5Gisn'tconcentratedonlyinbigcities.（1）WhatdoestheauthorwanttostressinParagraph1?A.

Thelighting-fastspeedof5G.B.

Theexpectationof5Gworld.C.

Thedifferencebetween4Gand5G.D.

Theinternet-connecteddevicesinourlife.（2）Whatdoestheunderlinedword"emblem"inParagraph2mean?A.

Exhibition.

B.

Success.

C.

Symbol.

D.

Explanation.（3）Wecaninferfromthetextthat________.A.

5Gworldwon'tcomewithoutARglassesB.

5GhelpstocreatetheartificialintelligencevehicleC.

ApplecompanyisdevelopingARglassesworldwideD.

Techcompanieswillfacethefactthatsmartphonesmaybereplaced（4）Whatwilltheauthorprobablytellusnext?A.

Howtofullyexpand5Gcoverage.B.

Smartglasseswillbecomefasterandlighter.C.

Why5Gisn'tconcentratedinbigcities.D.

Theimportanceofinfrastructureconstruction.【答案】（1）A（2）C（3）D（4）A【解析】【分析】本文是一篇说明文，介绍了我们离5G世界越来越近了。（1）考查段落大意。根据第一段中的“Slowlybutsurely,we'removingcloserandcloserto5Gworld.”缓慢但肯定的是，我们离5G世界越来越近了。可知，作者在第一段想强调“5G光速快。”故选A。（2）考查词义猜测。根据第二段中的“andthatistosay,itisasignoftim”也就是说，这是时间的标志，”可知，划线词的意思是“标志，象征”。故选C。（3）考查推理判断。根据第三段中的“ThisisnotablebecausecompaniessuchasApplearereportedlydevelopingARglassestoassist—orperhapsevenreplace—smartphones.”这一点值得注意，因为据报道，苹果(Apple)等公司正在开发增强现实眼镜，以帮助——甚至取代——智能手机。”可知，我们可以从文中推断，科技公司将面临智能手机可能被取代的事实。故选D。（4）考查推理判断。根据最后一段中的“Butdon'tgettooexcited.There'sstillalotofworktobedoneinthemeantime,includingvarioustrialstomakesuretheradiosplaynicelywithhardwareandinfrastructureconstructionso5Gisn'tconcentratedonlyinbigcities.”但是不要太激动。与此同时，仍有很多工作要做，包括各种试验，以确保收音机能很好地配合硬件和基础设施建设，这样5G就不会只集中在大城市。”可知，作者接下来可能会告诉我们“如何全面扩大5G覆盖。”故选A。【点评】本题考点涉及段落大意，词义猜测和推理判断三个题型的考查，是一篇科普类阅读，要求考生根据上下文的逻辑关系，进行分析，推理，概括和归纳，从而选出正确答案。3．犇犇阅读理解

Asingledose(剂量)ofanexperimentalvaccine(疫苗)canprotectmiceagainsttheZika(寨卡)virus,raisingrenewedhopeofavaccineforhumans,sayscientists.TheUSteamsaytheresults,publishedinNature,are"striking"andshouldencourageresearchefforts.

Testsinhumanscouldbegininmonths.Butevenifthesegowell,alicensedvaccineforwidespreadusetoprotectthoseatmostrisk­suchaspregnantwomen­wouldstillbeyearsaway,expertsadvise.ZikahasbeenspreadingacrossCentralandSouthAmericaand,mostrecently,Africa.Morethan60countriesandterritoriesnowhavecontinuingtransmission(传播)ofthedisease,whichiscarriedbymosquitoes.Theviruscausesseriousbirthdamagesduringpregnancyandhasbeendeclaredaglobalpublichealthemergency.

Now,developingavaccineforpregnantwomentoprotecttheirunbornbabiesisaninternationalresearchpriority(优先事项).USscientistsfromtheWalterReedArmyInstituteofResearch,theBethIsraelDeaconessMedicalCenterandHarvardMedicalSchooltestedtwotypesofZikavaccineinmice–onebasedonbitsofgenetic(基因的)codefromthevirusandanotherthatisaninactive(andthereforeharmless)copyofZika.Bothworkedwell,protectingeverymousethatwasimmunisedagainstthevirus.Incomparison,allofthemicenotgiventhevaccinecaughtZikaaftertheywereexposedtoit.

Researcherssaytheywillpushaheadwithdevelopingtheneededvirusvaccine.Therearemanyexistingvaccinesforotherdiseasethatusethistypeoftechnology,whiletherearerelativelyfewDNA­basedvaccines.Ofcourse,futuretestswillneedtocheckthevaccineissafeandeffectiveinhumans,aswellashowlongtheimmunitymightlast.（1）Ifthetestsinhumansgosmoothly,

.A.

avaccineforuseinthelaboratorywillbestillbeyearsaway.B.

pregnantwomeninAfricawillbethefirsttobenefitfromthevaccine.C.

alicensedvaccinewillstillnotbeaccessibleinashortterm.D.

TheZikaviruswillcauselessseriousbirthdefectsduringpregnancyinmonths.（2）WhichofthefollowingstatementsisNOTtrue?A.

manycountriesareactivelyinvolvedintheresearchoftheZikavaccine.B.

USscientistshavetestedmorethantwotypesofZikavaccineinmice.C.

NoneofthemicegiventhevaccinecaughtZika.D.

Itisstillunknownwhetherthevaccineissafeandeffective.（3）Whichcanbethebesttitleforthepassage?A.

Zikavaccine'worksverywell'inmiceB.

ZikavaccinestillhasalongwaytogoC.

InternationalresearchesintoZikahavepaidoffD.

MoreattentionhasbeenpaidtoZikavaccine【答案】（1）C（2）B（3）A【解析】【分析】本文是一篇说明文，介绍了科学家发现一种实验性疫苗可以保护小鼠免受寨卡病毒侵袭。（1）考查细节理解。根据第二段中的"Butevenifthesegowell,alicensedvaccineforwidespreadusetoprotectthoseatmostrisk­suchaspregnantwomen­wouldstillbeyearsaway"可知，但是，即使这些进展顺利，一种广泛用于保护高危人群的授权疫苗仍需数年时间，也就是说如果人体试验进展顺利的话，短期内仍无法获得授权疫苗，故选C。（2）考查细节理解。根据第三段中的"USscientistsfromtheWalterReedArmyInstituteofResearch,theBethIsraelDeaconessMedicalCenterandHarvardMedicalSchooltestedtwotypesofZikavaccineinmice"可知，美国科学家在白鼠身上只测试了两种而不是两种以上的寨卡病毒，故选B。（3）考查主旨大意。根据第一段中的"Asingledose(剂量)ofanexperimentalvaccine(疫苗)canprotectmiceagainsttheZika(寨卡)virus,"可知，一种实验性疫苗可以保护小鼠免受寨卡病毒侵袭，由此可知，本文主要介绍的是寨卡病毒疫苗对小白鼠非常有效，故选A。【点评】本题考点涉及细节理解和主旨大意两个题型的考查，是一篇科研类阅读，考生需要准确掌握细节信息，同时根据上下文进行推理，归纳，从而选出正确答案。4．犇犇阅读理解

Babieshaveanastonishingtalentthatadultsentirelylose.Bytheageofone,theycanrecognisethesignificantnoisesaroundthemandgroupthemintoalanguage.Whenwehavelostthiscapacityasadults,itbecomesenormouslydifficulttodistinguishbetweensoundsthatareglaringlydifferenttoanativespeaker.ItallsoundsGreektous.Thisisbecausetherangeofpossiblesoundsthathumansusetoconveymeaningmaybeashighas2,000,butfewlanguagesusemorethan100andeventhenthesignificantnoises－thephonemes(音素)ofalanguage－eachcoverarangeofsoundsandsovaguedistinctionswhichwouldchangethemeaningofawordinotherlanguages.

Butwheredothesephonemescomefromandwhydotheyshiftovertime?Newresearchsuggeststhattheapparentlyarbitrarydistributionofsomesoundsaroundtheworldmaybepartiallyexplainedbydiet.Thisisunexpected.We'dratherthinkoflanguageasproductofourthought

ratherthanofthearrangementofourteeth.Inreality,though,anygivenlanguagemustbeboth.

Huntergathererlanguagesveryseldomusethesoundsknownaslabiodentals(唇齿音)－thosesuchasfandv－thataremadebytouchingthelowerlipwiththeupperteeth.OnlytwoofthehundredsofAustralianaboriginallanguagesusethem,forexample.Butinculturesthathavediscoveredfarming,theseconsonants(辅音)aremuchmorecommon.Theargumentgoesthatfarmerseatmorecookedfoodandmoredairythanhuntergatherers.Eitherway,theyneedtochewmushless,andtobitelesswiththeirfrontteeth.Sofarmersgrewupwithsmallerlowerjawsandmoreofanoverbitethantheirancestorswhohadtobitethroughharderfoods.Itbecameeasierforthemtomakethelabiodentalconsonantsinsteadofpurelylabial(唇音)ones:oneexampleisthatfcometotaketheplaceofp.Romanssaid"pater"butEnglishspeakers(unlessthey'reRees－Moggs)say"father".

Beyondtheseparticularchanges,thestoryhighlightsthewayinwhicheverythingdistinctivelyhumanisbothmaterialandspiritual:speechmustcombinesoundandmeaning,andthemeaningcan'texistorbetransmittedwithoutarealobject.Butneithercanitbereducedtothepurelyphysical,asourinabilitytounderstandoreventorecogniseforeignlanguagesmakesclear.Thefoodweeatshapesourjaws,andourjawsinturnshapethesoundsofourlanguage.Theeasewithwhichweeatprobablyshapesourthoughttoo,asanyonewhohassufferedtoothachecouldtestify.Whatweeatmayhaveshapedthesoundsofourlanguage,buthowweeatchangeshowwefeelandwhatweuselanguagetoexpress.Afamilymealisverydifferentfromasandwichattheofficedesk,evenifthecalorieisthesame.FoodhaspurposesandmeaningsfarbeyondkeepingusaliveandpleasingthePalate(味觉).（1）Comparedwithadults,babiescouldmoreeasily

.A.

createsignificantnoisesB.

classifytheformsofnoisesC.

understandtheGreeklanguageD.

distinguishmeaningfulsounds（2）Accordingtothepassage,whichofthefollowingfactorshelpshapelanguage?A.

Lipsandteeth.

B.

Jobsandhabits.

C.

Ageandregions.

D.

Foodandthinking.（3）Thereasonforfarmers'makingsoundsof"f"and"v"is

.A.

enjoyingmorecookedfoodsB.

bitingmorewithfrontteethC.

constantlychewingharderfoodsD.

growingupwithlagerlowerjaws（4）Bywritingthispassage,theauthorintendstoreveal

.A.

jawshelpshapeourthoughtB.

fooddeterminesourthoughtC.

diethassomeinfluenceonlanguageD.

languageconsistsofsoundandmeaning【答案】（1）D（2）D（3）A（4）C【解析】【分析】本文是一篇说明文，人们一直以来认为语言是思想的产物，但是有新的研究表明饮食对于语言也会产生一些影响。且以f和v的发音为例，揭示了农民们发"f"和"v"音的原因是他们喜欢吃更多的熟食。同时这也强调了人类特有的一切都是物质和精神的结合:语言必须把声音和意义结合起来，没有真实的物体，意义就不可能存在或传播。（1）考查细节理解。根据第一段中的“Bytheageofone,theycanrecognizethesignificantnoisesaroundthemandgroupthemintoalanguage.”可知一岁的婴儿和成人相比更能识别出周围的重要声音，故选D。（2）考查细节理解。根据第二段中的“Newresearchsuggeststhattheapparentlyarbitrarydistributionofsomesoundsaroundtheworldmaybepartiallyexplainedbydiet.”可知某些声音在世界范围内的任意分布，部分可以用饮食来解释。本段提到sound和diet是有关系的,也就是food食物；另外也和思考有关theproductofthought,本段最后说到和两者都有关系。故选D。（3）考查细节理解。根据第三段中的“Theargumentgoesthatfamerseatmorecookedfoodandmoredairythanhuntergatherers.”可知农民比狩猎采集者吃更多的熟食和奶制品，即农民们发"f"和"v"音的原因是他们喜欢吃更多的熟食。故选A。（4）考查主旨大意。根据第二段中的“We'dratherthinkoflanguageasproductofourthought,ratherthanofthearrangementofourteeth.Inreality,though,anygivenlanguagemustbeboth.”可知任何一种语言的诞生都必须同时具备思想和饮食这两种因素的影响。以及文章内容可知叙述的都是日常饮食和发音对语言的影响，故选C。【点评】本题考点涉及细节理解和主旨大意两个题型的考查，是一篇科研类阅读，考生需要准确掌握细节信息，同时根据上下文进行推理，归纳，从而选出正确答案。5．犇犇阅读理解

IfplastichadbeeninventedwhenthePilgrimssailedfromPlymouth,England,toNorthAmerica-andtheirMayflowerhadbeenstockedwithbottledwaterandplastic-wrappedsnacks,theirplasticwastewouldlikelystillbearoundfourcenturieslater.Atlanticwavesandsunlightwouldhavewornallthatplasticintotinybits.Andthosebitsmightstillbefloatingaroundtheworld'soceanstoday,waitingtobeeatenbysomefishoroyster,andfinallyperhapsbyoneofus.

Becauseplasticwasn'tinventeduntilthelate19thcentury,anditsproductiononlyreallytookoffaround1950,wehaveamere9.2billiontonsofthestufftodealwith.Ofthat,morethan6.9billiontonshavebecomewaste.Andofthatwaste,asurprising6.3billiontonsnevermadeittoarecyclingbin-thefigurethatshockedthescientistswhopublishedthenumbersin2017.

Nooneknowshowmuchunrecycledplasticwasteendsupintheocean,theearth'slastsink.In2015,JennaJambeckaUniversityofGeorgiaengineeringprofessor,caughteveryone'sattentionwitharoughestimatebetween5.3millionand14milliontonsofplasticwasteeachyearjustcomefromcoastalregions.

Meanwhile,oceanplasticisestimatedtokillmillionsofmarine(海洋的）animalseveryyear.Nearly700species,includingendangeredones,areknowntohavebeenaffectedbyit.Someareharmedvisibly,stuckbyabandonedthingsmadeofplastic.Manymoreareprobablyharmedinvisibly.Marinespeciesofallsizes,fromzooplanktontowhales,noweatmicroplas-tics,thebitssmallerthanone-fifthofaninchacross.

"Thisisn'taproblemwherewedon'tknowwhatthesolutionis,"saysTedSiegler,aVermontresourceeconomistwhohasspentmorethan25yearsworkingwithdevelopingnationsongarbage."Weknowhowtopickupgarbage.Anyonecandoit.Weknowhowtodealwithit.Weknowhowtorecycle."It'samatterofbuildingthenecessaryinstitutionsandsystems,hesays,ideallybeforetheoceanturnsintoathinsoupofplastic.（1）WhydoestheauthormentionthePilgrimsinparagraph1?A.

Toproveplasticwasdifficulttoinvent.B.

Tointroducewhatmarineanimalslikeeating.C.

TotellthePilgrimscontributedalottothemarineprotection.D.

Toshowplasticwastehasalastingeffectontheocean.（2）What'sthemaintroublemarineanimalsfaceaccordingtothetext?A.

Lackingprotection.

B.

Beingstuckbyplastics.C.

Beingcaughtbyhumans.

D.

Treatingplasticsasfood.（3）WhatdoesTedSieglerwanttotellusinthelastparagraph?A.

Somepeopledon'tknowthesolutionofplasticswaste.B.

Plasticswillturntheoceanintoasoupofplastic.C.

It'stimetotakemeasurestodealwithplasticwaste.D.

Peopleshouldavoidusingplasticstoprotecttheocean.（4）Fromwhichisthetextprobablytaken?A.

Abiologytextbook.

B.

Atravelbrochure.C.

Anenvironmentalreport.

D.

Alifestylemagazine.【答案】（1）D（2）B（3）C（4）C【解析】【分析】本文是一篇说明文，介绍了塑料垃圾给海洋以及海洋生物带来的危害。（1）考查推理判断。根据第一段中的“theirplasticwastewouldlikelystillbearoundfourcenturieslater.

”他们的塑料废物很可能在四百年后仍会存在，可知作者提到thePilgrims是为了说明塑料废物对海洋有持久的影响，故选D。（2）考查细节理解。根据第四段中的“Someareharmedvisibly,stuckbyabandonedthingsmadeofplastic.Manymoreareprobablyharmedinvisibly.”一些明显受到伤害，被塑料制成的废弃物品卡住了。可能有更多的人受到无形的伤害。可知选B。（3）考查推理判断。根据最后一段中的“It'samatterofbuildingthenecessaryinstitutionsandsystems,hesays,ideallybeforetheoceanturnsintoathinsoupofplastic.”他说最好在海洋变成塑料汤之前建立一个必要的机构和制度的问题，可推知选C。（4）考查推理判断。纵观全文可知，本题介绍了塑料垃圾给海洋以及海洋生物带来的危害。是一篇环境保护类阅读，因此选C。【点评】本题考点涉及细节理解和推理判断两个题型的考查，是一篇环保类阅读，考生需要准确捕捉细节信息，同时根据上下文进行逻辑推理，从而选出正确答案。6．阅读理解

Expertsnotethatanunhealthylifestylecanputyouatgreatriskofheartdiseaseandstroke.Sodoctorsurgeustoeathealthyfoods,getexercise,stopsmokingandlimitouralcoholintake.Butthereissomethingelseyoucando.Anditisfreeandeasy.Smile!

Dr.Chockalingam,aheartdiseasespecialistinColumbia,adviseshispatientstosmile.Hesaysasmilemaybeonewaytohelpyourheart."Whenwesmile,thebrainwiringchanges.Thechemicalsthatarereleasedaremorepositive."Hesayssmilingisthefirststepinfightingphysicalandemotionalstressanditssometimesharmfuleffectsonhumanhealth.ThisisnotjustNewAgeadvice.Severalstudiessupporthisopinion.

Whenyoufeelstressedorunderpressure,yourbodyreleasesmanynaturalhormones(荷尔蒙)includingadrenalineandcortisol.Adrenalineincreasesyourheartrateandbloodpressure.Cortisolisthebody'smainstresshormone.Itincreasessugarinthebloodstream.Ifyouaretrulyindanger,thesehormonescanhelpyou.Theyarepartofwhatwecallourfight-or-flightresponse.

However,whenwearestressedforalongperiod,thesestresshormonesareever-presentinourbodies.Andthat,medicalresearcherswarn,mayleadtohealthproblems.

Researcherssaytheconnectionbetweenstressandheartdiseaseisstillunclear.However,theyclaimthatwhenpeoplearestressedforlongperiodsoftime,theymayhaveanunhealthylifestyle,whichcanleadtohealthproblems.

Dr.Chockalingamsaysasmilemaybeonewaytohelp.Hetellshispatientstosmile20timesanhour.Tosome,thatmightseemlikealotofsmiling.Orsomemightevenfeelfoolish...smilingforseeminglynoreason.Butasmiledoesnotinvolvedrugs.Itisnotinvasivelikeasurgicaloperation.Itisfreeandithasnobadsideeffects.

"Oncepeoplesmile,theyarerelaxing.Thisrelaxationdirectlylowersbloodpressure,improvessugarlevelsintheblood.Ifwearesmiling,wearebreakingthatlinkbetweenstressandhealth."Anditjustmayprovidealittleextraprotectiontoeveryone'shearthealth.（1）WhichofthefollowingagreeswithDr.Chockalingam'sopinion?A.Smilehasthesameeffectsaslaughter.B.Smilecanbeusedtotaketheplaceofmedicine.C.Smileisbetterthananyhealthylifestyletohealth.D.Smilecanmakeourbodyproducebeneficialchemicals.（2）Whatcanweknowaboutthementionedstresshormones?A.Theycanlowerourbloodpressure.B.Theywillsurelyleadtoheartdiseases.C.Theycanbenefituswhenweareindanger.D.Theywillmakeusliveanunhealthylifestyle.（3）WhydoesDr.Chockalingamthinksmilingishelpfultoourhealth?A.Itcanmakeusrelax.B.Itincreasessugarlevels.C.Ithaslittlebadsideeffects.D.Itcanhappenfornoreason.（4）Whatcanbethebesttitleforthetext?A.AThoroughAnalysisoftheCausesofHeartDiseasesB.OneThingYouCanDoRightNowtoHelpYourHeartC.OneThingThatIsCloselyConnectedwithStressHormonesD.TheClearConnectionBetweenUnhealthyLifestylesandHeartDiseases【答案】（1）D（2）C（3）A（4）B【解析】【分析】本文是一篇说明文，哥伦比亚的心脏病专家Chockalingam博士建议多保持微笑，他认为微笑可能是帮助心脏的一种方式。同时说明了微笑有利于健康的原因和人们感到压力时的身体反应等情况。（1）考查细节理解。根据第二段中的“Whenwesmile,thebrainwiringchanges.Thechemicalsthatarereleasedaremorepositive.”当我们微笑时，大脑的线路会发生变化。释放出的化学物质更积极。可知，Chockalingam博士认为微笑能使我们的身体产生有益的化学物质。故选D。（2）考查细节理解。根据第三段中的“Ifyouaretrulyindanger,thesehormonescanhelpyou.”如果你真的有危险，这些荷尔蒙会帮助你。可知，当我们处于危险中时，压力荷尔蒙可以帮助我们。故选C。（3）考查细节理解。根据最后一段中的“Ifwearesmiling,wearebreakingthatlinkbetweenstressandhealth.Anditjustmayprovidealittleextraprotectiontoeveryone'shearthealth.”如果我们微笑，我们就打破了压力和健康之间的联系。而且它可能会为每个人的心脏健康提供一点额外的保护。可知，Chockalingam博士认为微笑可以使我们放松，从而有利于我们的健康。故选A。（4）考查主旨大意。根据第二段中的“Dr.Chockalingam,aheartdiseasespecialistinColumbia,adviseshispatientstosmile.Hesaysasmilemaybeonewaytohelpyourheart.”哥伦比亚的心脏病专家Chockalingam博士建议他的病人保持微笑。他说，微笑可能是帮助心脏的一种方式。以及结合文章内容主要介绍了微笑能够让我们放松进而有利于我们的健康，所以要健康那就要多微笑，所以选B。【点评】本题考点涉及细节理解和主旨大意两个题型的考查，是一篇科研类阅读，考生需要准确掌握细节信息，并根据上下文的逻辑关系，进行概括和归纳，从而选出正确答案。7．阅读理解

Ithasbeendiscoveredthataftertheageofsixteen,thenumberofourbraincellsbeginstodecreaseataspeedofseveralmillionayear.Theysimplydieoff.Incertaintypesofactivity,thehumanbrainisatitshighestpointintheearlytwenties,whenithascollectedenoughinformationtobeabletousethevastnumberofcellsfreelyinthemosteffectiveway.Puremathematicsisoneofthefieldsinwhichthishappens,andweknowthatAlbertEinsteinmadeallhisworld-shakingdiscoveriesbetweentheageofabout20and25,andspenttherestofhislifetidyingthemupandarrangingthem.

Butincertainothertypesofactivity(ofwhichbeinganauthorisperhapsone),experienceismoreimportantthansharpnessofbrain,andthereoneusuallyfindsthatapersonreacheshisorherpeakmuchlaterinlife.

Besidessharpnessofbrainandexperience,hereisanotherthingthatisveryimportant,andthatiswisdom.Onecanhaveaveryquick,inventivebrainandplentyofexperience,butifoneusesthesefoolishly,oneharmsbothoneselfandothers.Wisdomdoesnotalwayscomewithage——thereareplentyoffoolishmiddle-agedpeopleabout——buttheaveragepersontendstolearnwisdomashegetsolder,usuallybymakingpainfulofembarrassingmistakes.Leaningtobewiseisbasicallylearningwhatisnotpossible;andwhatispossiblebutsodifficultthatitisnotworthallthetroubleonehastogothroughtogetthere.Mostly,itislearningabouthumannature;howrealpeoplebehaveandreact,asagainsthowonewouldlikethemtobehaveandreact.Onecanreadandhearlotofidealisticstuffabouthowtomaketheworldabetterplace,whichwouldbefoundifitwasbasedonanaccurateobservationofhumannature,butwhichisbasicallyawasteoftimebecauseitisnot.（1）Accordingtothewriter,thegreatdiscoveriesmadebyAlbertEinsteinweremainlyaresultin________.A.yearsofhardworkB.sharpnessofthebrainC.richexperienceD.hisdeepunderstandingofthenature（2）Somepeopleachievesuccessmuchlaterinlifebecause

.A.theirworkoftenrequiresmuchexperienceB.theydonothaveachancetoshowtheirtalentsC.theyhavetolearnlessonsfromfailuresD.theyfailtorealizeearliertheimportanceofhardwork（3）Theimportanceofwisdomliesinthefactthat

.A.ithelpstoavoidvariousmistakesB.itcontributestoone'screativityC.itencouragesonetogoforwardinfaceofdifficultyD.itprovidestherightdirectionofefforts（4）Thewritercametobelievethat

.A.itisalwaysawasteoftimetomakeplansaboutthefutureB.itishumannaturetomakeattemptsonwhatlooksimpossibleC.oneshouldalwayschallengetheimpossibletopushthesocietyforwardD.onehastousewisdomindecidingwhatisthebestthingtodo【答案】（1）B（2）A（3）D（4）D【解析】【分析】本文是一篇说明文，介绍了人类的大脑在20岁左右于巅峰，在以后的成就多数是因为需要丰富的经验。除了头脑敏锐和经验丰富外，智慧也非常重要，因为智慧为人们提供了正确的努力方向。人们要用智慧来决定做什么才是最好的。（1）考查推理判断。根据第一段“Ithasbeendiscoveredthataftertheageofsixteen,thenumberofourbraincellsbeginstodecreaseataspeedofseveralmillionayear.Theysimplydieoff.Incertaintypesofactivity,thehumanbrainisatitshighestpointintheearlytwenties,...andweknowthatAlbertEinsteinmadeallhisworld-shakingdiscoveri