2025年高考英语考点过考点43阅读理解词义猜测题

考点43阅读理解词义猜测题高考频度：★★★★★历年来高考试题中的生词量有增无减。《教学大纲》要求学生“读懂生词率不超过3%的传记、故事、记叙文、科普小品文和有关社会文史知识等不同题材的材料。”在英语阅读训练和测试中的生词障碍往往会成为学生理解的“绊脚石”，这些“绊脚石”的出现大致分五类：1．旧词新义，考查词汇表中未出现的词义；如：NearbyistheIndianapolisracecourse,wherethenation’smostfamouscarraceisheldeachyearonMay30th.我们学过course的意思是“过程，课程”等，在此显然不符句意。根据上下文course是汽车赛举行的地方，可推断course在该句是“车道”或“跑道”的意思。2．合成词、转化词与派生词，如shoplifting，heartbroken，puterliterate，decisionthinking，imperfect等；3．“灵活”的常用词增多，这些词必须根据具体的上下文语境才能正确理解；4．“新鲜”的外国人名、地名、专有名称增多，这些词有些带有一定的文化背景5．超纲生词。有的学生在阅读训练和测试中存在着“生词恐惧心理”，一遇到生词就有读不下去的感觉。那么阅读理解时遇到大量生词该怎么办?查词典当然是排除词义障碍的一种方法，当然这只有在平常的阅读训练中才可以使用。但是，频繁的查阅词典既影响阅读速度，又容易破坏学生阅读的思路和兴趣。况且，一词多义是英语词汇的主要特点，词典不一定能为学生提供单词在特定的上下文中的具体或确切的含义。平时的练习中遇到生词不要马上查词典，可以通过一定的方法来猜测理解。猜测词义不仅是一项阅读技巧，也是高考阅读能力考查的一个方面，每年在高考阅读中都有猜测词义的试题。掌握正确方法快速而又准确地猜测出生词的含义，对提高阅读速度和答题效率相当重要。该类题常见的考查形式有：1.Thephrase“…”inthesentencecouldbereplacedby____.2.Theword“…”intheparagraphrefersto____.3.Whatisthemeaningoftheunderlinedwordintheparagraph?/Whatdoestheunlinedwordmean?4.Whichofthefollowingistheclosestinmeaningtothephrase“…”?5.Theword“…”mostnearlymeans____.对此类试题，考生应该进行大胆猜测，但这种猜测不是胡乱的，盲目的，而是有一定的方法和技巧。下面介绍几种常见的猜测词义的方法供同学们加以运用。1．构词法猜词阅读中常常会遇到一些由熟悉的单词派生或合成的新词。掌握构词法对猜测词义很有帮助。如：unforeseeable.这个词，可以根据构词法把它拆成un,fore,see,able；其中see是词根，fore是“先，前，预”的含义，un是否定，able是“能……的，可……的”，因此unforeseeable是“未能预见到的”意思。学*科网…Bakerconcludesthatpeopledonothavetheabilitytosensewhenthey’rebeingstaredat.Ifpeopledoubttheouteofhistwoexperiments,saidBaker,“Isuggesttheyrepeattheexperimentsandseeforthemselves.”…70.Theunderlinedword“oute”inthelastparagraphmostprobablymeans.A.value B.resultC.performance D.connection【答案】B2．利用同义近义词猜词在生词所出现的上下文中，有时会出现与之同义或近义的词语或结构，这时可从熟悉的词语中推知生词的含义。统称在词或短语之间有并列连词and或or，这些词语或短语在句中作相同的成分，并且and或or连接的两项内容在含义上是接近的或递进的，由此确定同等关系中的某个生词所属的义域，甚至推出它的大致词义。…Fermat’sLastTheorem（定理）,firstputforwardbytheFrenchmathematicianPierredeFermatintheseventeenthcentury,thetheoremhadbaffledandbeatenthefinestmathematicalminds,includingaFrenchwomanscientistswhomadeamajoradvanceinworkingouttheproblem,andwhohadtodresslikeamaninordertobeabletostudyattheEcolePolytechnique.…65.Whichofthefollowingbestexplainsthemeaningoftheword“baffle”asitisusedinthetext?A.Toencouragepeopletoraisequestions.B.Tocausedifficultyinunderstanding.C.Toprovideapersonwithanexplanation.D.Tolimitpeople’simagination.【答案】B3．利用反义词猜词对比是描述，说明事物的常用方式。在对比中，对比的事物是互为相反的，因此根据反义或对比关系可从已知推出未知。利用反义词来说明生词的意义，如反义词hotandcold,perfectandimperfect，甚至前、后句为肯定与否定或是与不是等，在句内词与词之间，在段内句与句之间的关系上起着互为线索的作用。…Achild’sbirthdaypartydoesn’thavetobeahassle;itcanbeabasketoffun,accordingtoBethAnaclerio,anEvastonmotheroftwo,ages4and18months.…74.Whatdoestheunderlinedword“hassle”probablymean?A.Apartydesignedbyspecialists.B.Aplanrequiringcarefulthought.C.Asituationcausingdifficultyortrouble.D.Ademandmadebyguests.【答案】C【解析】根据前句的否定doesn’t与后句的肯定canbe这一对比关系，可以判断出，为了庆祝孩子的生日，又不至于麻烦，可以买一个生日开心包。Hassle的意思应该与fun相反，而与difficulty,trouble相近。答案为C。4．利用上下文语境猜词任何一篇文章中的句子在内容上都不是绝对孤立的，都跟句子所在的段落及整整篇文章有关。利用上下文提供的情景和线索，进行合乎逻辑的综合分析进而推测词义，是阅读过程中的一大关键，这也是近年来高考考查的热点。（2018·新课标卷III）Adultsunderstandwhatitfeelsliketobefloodedwithobjects.Whydoweoftenassumethatmoreismorewhenitestokidsandtheirbelongings?ThegoodnewsisthatIcanhelpmyownkidslearnearlierthanIdidhowtolivemorewithless.Ifoundthepreholidaysagoodtimetoencourageyoungchildrentodonatelessusedthings,anditworked.Becauseofourefforts,ourdaughterGeorgiadiddecidetodonatealargebagoftoystoalittlegirlwhosemotherwasunabletopayforherholidayduetoillness.Shechosetosellafewlargerobjectsthatwerelessoftenusedwhenwepromisedtoputthemoneyintoherschoolfund(基金）(ourkindergartendaughterisseriousaboutbeingadoctor).……【文章大意】这是一片夹叙夹议文。文章讲述作者引导孩子主动捐献玩具，并从玩耍简单玩具中获得快乐的做法。【答案】A5．利用定义和解释猜词有些文章，特别是科技文章，通常会对一些关键词给予定义，我们可以利用定义来猜测这些词的意思。释义法就是根据文章中的字里行间，对生词以定语（从句）、表语甚至用逗号、破折号等标点符号引出并加以解释说明的方式。“Organicproduceisalwaysbetter,”Goldsaid.“Thefoodisfreeofpesticides(农药),andyouaregenerallysupportingfamilyfarmsinsteadoflargefarms.Andmoreoftenthannotitislocally(本地)grownandseasonal,soitismoretasty.”Goldisoneofagrowingnumberofshoppersbuyingintotheorganictrend,andsupermarketsacrossBritainarecountingonmorelikehimastheygrowtheirorganicfoodbusiness.62.Whatisthemeaningof“theorganictrend”asthewordsareusedinthetext?A.Growinginterestinorganicfood.B.Betterqualityoforganicfood.C.Risingmarketfororganicfood.D.Higherpricesoforganicfood.【答案】A【解析】由Goldisoneofagrowingnumberofshoppersbuyingsomething可以推断出，越来越多的顾客像Gold一样开始购买有机食物，其实也就是对这类食物产生了越来越浓厚的兴趣。答案为A。6．根据语义转折猜词有时文章的作者为了增强表达效果，会用一些含有表示意思转折的连词，副词或短语。如：though,although,still,but,yet,instead,insteadof,however,while,onthecontrary,ontheotherhand,unlike,ratherthan,foronething,foranother等，我们可以根据转折意思猜测词义。…Howeverobviousthesefactsmayappearatfirstglance,theyareactuallynotsoobviousastheyseemexceptwhenwetakespecialpainstothinkaboutthesubject.…71.InParagraph3,“takespecialpains”probablymeans“_____”.A.tryveryhardB.takeourtimeC.areveryunhappyD.feelespeciallypainful【答案析】A7．利用经验和常识猜词…“IwasonthewaytoapersonalinjuryaccidentinWestNashville.AsIgotontoHighway40,bluelightsandsirens(警笛)going,IfellinbehindagoldPontiacFirebirdthatsuddenlyseemedtotakeoffquicklydownthehighway.Thedriversomehowpanickedatthesightofme.Hewasgoingmorethanahundredmilesanhourandbeganpassingcarsontheshoulder.”63.Themeaningof“panicked”inParagraph2isrelatedto___________.A.shameB.hateC.angerD.fear【答案】D【解析】根据本段内容描述，可以知道panicked意思是“惊慌”，相当于fear。题组一（2018年高考真题）Passage1(2018·新课标卷I，C)Languageshavebeeningandgoingforthousandsofyears,butinrecenttimestherehasbeenlessingandalotmoregoing.Whentheworldwasstillpopulatedbyhuntergatherers,small,tightlyknit(联系)groupsdevelopedtheirownpatternsofspeechindependentofeachother.Somelanguageexpertsbelievethat10,000yearsago,whentheworldhadjustfivetotenmillionpeople,theyspokeperhaps12,000languagesbetweenthem.Soonafterwards,manyofthosepeoplestartedsettlingdowntobeefarmers,andtheirlanguagestoobecamemoresettledandfewerinnumber.Inrecentcenturies,trade,industrialization,thedevelopmentofthenationstateandthespreadofuniversalpulsoryeducation,especiallyglobalisationandbettermunicationsinthepastfewdecades,allhavecausedmanylanguagestodisappear,anddominantlanguagessuchasEnglish,SpanishandChineseareincreasinglytakingover.Atpresent,theworldhasabout6,800languages.Thedistributionoftheselanguagesishugelyuneven.Thegeneralruleisthatmildzoneshaverelativelyfewlanguages,oftenspokenbymanypeople,whilehot,wetzoneshavelots,oftenspokenbysmallnumbers.Europehasonlyaround200languages;theAmericasabout1,000;Africa2400;andAsiaandthePacificperhaps3,200,ofwhichPapuaNewGuineaaloneaccountsforwellover800.Themediannumber(中位数)ofspeakersisamere6,000,whichmeansthathalftheworld’slanguagesarespokenbyfewerpeoplethanthat.Alreadywellover400ofthetotalof,6,800languagesareclosetoextinction(消亡),withonlyafewelderlyspeakersleft.Pick,atrandom,BusuuinCameroon(eightremainingspeakers),ChiapanecoinMexico(150),LipanApacheintheUnitedStates(twoorthree)orWadjiguinAustralia(one,withaquestionmark):noneoftheseseemstohavemuchchanceofsurvival.28.Whatcanweinferaboutlanguagesinhuntergatherertimes?A.Theydevelopedveryfast.B.Theywerelargeinnumber.C.Theyhadsimilarpatterns.D.Theywerecloselyconnected.29.Whichofthefollowingbestexplains"dominant"underlinedinparagraph2？A.plex. B.Advanced.C.Powerful. D.Modern.30.Howmanylanguagesarespokenbylessthan6,000peopleatpresent?A.About6,800 B.About3,400C.About2,400 D.About1,20031.Whatisthemainideaofthetext?A.Newlanguageswillbecreated.B.People’slifestylesarereflectedinlanguages.C.Humandevelopmentresultsinfewerlanguages.D.Geographydetermineslanguageevolution.Passage2(2018·新课标卷II，) StevenSteinlikestofollowgarbagetrucks.Hisstrangehabitmakessensewhenyouconsiderthathe’sanenvironmentalscientistwhostudieshowtoreducelitter,includingthingsthatfalloffgarbagetrucksastheydrivedowntheroad.Whatisevenmoreinterestingisthatoneof

Stein'sjobsisdefendinganindustrybehindtheplasticshoppingbags. Americansusemorethan100billionthinfilmplasticbagseveryyear.Somanyendupintreebranchesoralonghighwaysthatagrowingnumberofcitiesdonotallowthematcheckouts(收银台).Thebagsareprohibitedinsome90citiesinCalifornia,includingLosAngeles.Eyeingtheseheadwinds,plasticbagmakersarehiringscientistslike

Stein

to

makethecasethattheirproductsarenotasbadfortheplanetasmostpeopleassume. Amongthebagmakers'argument:manycitieswithbansstillallowshoppers

to

purchasepaperbags,whichareeasilyrecycledbutrequiremoreenergy

to

produceandtransport.Andwhileplasticbagsmaybeugly

to

lookat,theyrepresentasmallpercentageofall

garbage

onthegroundtoday. Theindustryhasalsotakenaimattheproductthathasappearedasitsreplacement:reusableshoppingbags.Thestrongerareusablebagis,thelongeritslifeandthemoreplasticbaguseitcancelsout.However,longerlastingreusablebagsoftenrequiremoreenergy

to

make.Onestudyfoundthatacottonbagmustbeusedatleast131timestobebetterfortheplanetthanplastic. Environmentalistsdon'tdispute（质疑）thesepoints.Theyhopepaperbagswillbebannedsomedaytooandwantshoppers

to

usethesamereusablebagsforyears.24.WhathasStevenSteinbeenhiredtodo?A.Helpincreasegrocerysales. B.Recyclethewastematerial.C.Stopthingsfallingofftrucks. D.Arguefortheuseofplasticbags.25.Whatdoestheword“headwinds”inparagraph2referto?A.Bansonplasticbags. B.Effectsofcitydevelopment.C.Headachescausedbygarbage. D.Plasticbagshungintrees.26.Whatisadisadvantageofreusablebagsaccordingtoplasticbagmakers?A.Theyarequiteexpensive. B.Replacingthemcanbedifficult.C.Theyarelessstrongthanplasticbags. D.Producingthemrequiresmoreenergy.27.Whatisthebesttitleforthetext?A.Plastic,PaperorNeither B.Industry,PollutionandEnvironmentC.RecycleorThrowAway D.GarbageCollectionandWasteControlPassage3(2018·浙江卷，B) StevenSteinlikestofollowgarbagetrucks.Hisstrangehabitmakessensewhenyouconsiderthathe’sanenvironmentalscientistwhostudieshowtoreducelitter,includingthingsthatfalloffgarbagetrucksastheydrivedowntheroad.Whatisevenmoreinterestingisthatoneof

Stein'sjobsisdefendinganindustrybehindtheplasticshoppingbags. Americansusemorethan100billionthinfilmplasticbagseveryyear.Somanyendupintreebranchesoralonghighwaysthatagrowingnumberofcitiesdonotallowthematcheckouts(收银台).Thebagsareprohibitedinsome90citiesinCalifornia,includingLosAngeles.Eyeingtheseheadwinds,plasticbagmakersarehiringscientistslike

Stein

to

makethecasethattheirproductsarenotasbadfortheplanetasmostpeopleassume. Amongthebagmakers'argument:manycitieswithbansstillallowshoppers

to

purchasepaperbags,whichareeasilyrecycledbutrequiremoreenergy

to

produceandtransport.Andwhileplasticbagsmaybeugly

to

lookat,theyrepresentasmallpercentageofall

garbage

onthegroundtoday. Theindustryhasalsotakenaimattheproductthathasappearedasitsreplacement:reusableshoppingbags.Thestrongerareusablebagis,thelongeritslifeandthemoreplasticbaguseitcancelsout.However,longerlastingreusablebagsoftenrequiremoreenergy

to

make.Onestudyfoundthatacottonbagmustbeusedatleast131timestobebetterfortheplanetthanplastic. Environmentalistsdon'tdispute（质疑）thesepoints.Theyhopepaperbagswillbebannedsomedaytooandwantshoppers

to

usethesamereusablebagsforyears.24.WhathasStevenSteinbeenhiredtodo?A.Helpincreasegrocerysales. B.Recyclethewastematerial.C.Stopthingsfallingofftrucks. D.Arguefortheuseofplasticbags.25.Whatdoestheword“headwinds”inparagraph2referto?A.Bansonplasticbags. B.Effectsofcitydevelopment.C.Headachescausedbygarbage. D.Plasticbagshungintrees.26.Whatisadisadvantageofreusablebagsaccordingtoplasticbagmakers?A.Theyarequiteexpensive. B.Replacingthemcanbedifficult.C.Theyarelessstrongthanplasticbags. D.Producingthemrequiresmoreenergy.27.Whatisthebesttitleforthetext?A.Plastic,PaperorNeither B.Industry,PollutionandEnvironmentC.RecycleorThrowAway D.GarbageCollectionandWasteControlPassage4(2018·北京卷，D)PreparingCitiesforRobotCarsThepossibilityofselfdrivingrobotcarshasoftenseemedlikeafuturist’sdream,yearsawayfrommaterializingintherealworld.Well,thefutureisapparentlynow.TheCaliforniaDepartmentofMotorVehiclesbegangivingpermitsinAprilforpaniestotesttrulyselfdrivingcarsonpublicroads.Thestatealsoclearedthewayforpaniestosellorrentoutselfdrivingcars,andforpaniestooperatedriverlesstaxiservices.California,itshouldbenoted,isn’tleadingthewayhere.panieshavebeentestingtheirvehiclesincitiesacrossthecountry.It’shardtopredictwhendriverlesscarswillbeeverywhereonourroads.Buthoweverlongittakes,thetechnologyhasthepotentialtochangeourtransportationsystemsandourcities,forbetterorforworse,dependingonhowthetransformationisregulated.Whilemuchofthedebatesofarhasbeenfocusedonthesafetyofdriverlesscars(andrightfullyso),policymakersalsoshouldbetalkingabouthowselfdrivingvehiclescanhelpreducetrafficjams,cutemissions(排放)andoffermoreconvenient,affordablemobilityoptions.Thearrivalofdriverlessvehiclesisachancetomakesurethatthosevehiclesareenvironmentallyfriendlyandmoreshared.Dowewanttocopy—orevenworsen—thetrafficoftodaywithdriverlesscars?Imagineafuturewheremostadultsownindividualselfdrivingvehicles.Theytoleratelong,slowjourneystoandfromworkonpackedhighwaysbecausetheycanwork,entertainthemselvesorsleepontheride,whichencouragesurbanspread.Theytaketheirdriverlesscartoanappointmentandsettheemptyvehicletocirclethebuildingtoavoidpayingforparking.Insteadofwalkingafewblockstopickupachildorthedrycleaning,theysendtheselfdrivingminibus.Theconvenienceevenleadsfewerpeopletotakepublictransport—anunwelesideeffectresearchershavealreadyfoundinridehailing(叫车)services.AstudyfromtheUniversityofCaliforniaatDavissuggestedthatreplacingpetrolpoweredprivatecarsworldwidewithelectric,selfdrivingandsharedsystemscouldreducecarbonemissionsfromtransportation80%andcutthecostoftransportationinfrastructure(基础设施)andoperations40%by2050.Feweremissionsandcheapertravelsoundprettyappealing.Thefirstmerciallyavailabledriverlesscarswillalmostcertainlybefieldedbyridehailingservices,consideringthecostofselfdrivingtechnologyaswellasliabilityandmaintenanceissues(责任与维护问题).Butdriverlesscarownershipcouldincreaseasthepricesdropandmorepeoplebeefortablewiththetechnology.Policymakersshouldstartthinkingnowabouthowtomakesuretheappearanceofdriverlessvehiclesdoesn’textendtheworstaspectsofthecarcontrolledtransportationsystemwehavetoday.Theingtechnologicaladvancementpresentsachanceforcitiesandstatestodeveloptransportationsystemsdesignedtomovemorepeople,andmoreaffordably.Thecarofthefutureising.Wejusthavetoplanforit.47.Accordingtotheauthor,attentionshouldbepaidtohowdriverlesscarscan__________.A.helpdealwithtransportationrelatedproblemsB.providebetterservicestocustomersC.causedamagetoourenvironmentD.makesomepeoplelosejobs48.Asfordriverlesscars,whatistheauthor’smajorconcern?A.Safety. B.Sideeffects.C.Affordability. D.Management.49.Whatdoestheunderlinedword＂fielded＂inParagraph4probablymean?A.Employed. B.Replaced.C.Shared. D.Reduced.50.Whatistheauthor’sattitudetothefutureofselfdrivingcars?A.Doubtful. B.Positive.C.Disapproving. D.Sympathetic.题组二（2017年高考真题）Passage1(2017·新课标卷II，D)Whenaleafyplantisunderattack,itdoesn’tsitquietly.Backin1983,twoscientists,JackSchultzandIanBaldwin,reportedthatyoungmapletreesgettingbittenbyinsectssendoutaparticularsmellthatneighboringplantscanget.Thesechemicalsefromtheinjuredpartsoftheplantandseemtobeanalarm.Whattheplantspumpthroughtheairisamixtureofchemicalsknownasvolatileorganicpounds,VOCsforshort.ScientistshavefoundthatallkindsofplantsgiveoutVOCswhenbeingattacked.It’saplant’swayofcryingout.Butisanyonelistening?Apparently.Becausewecanwatchtheneighboursreact.Someplantspumpoutsmellychemicalstokeepinsectsaway.Butothersdodoubleduty.Theypumpoutperfumesdesignedtoattractdifferentinsectswhoarenaturalenemiestotheattackers.Oncetheyarrive,thetablesareturned.Theattackerwhowaslunchingnowbeeslunch.Instudyafterstudy,itappearsthatthesechemicalconversationshelptheneighbors.Thedamageisusuallymoreseriousonthefirstplant,buttheneighbors,relativelyspeaking,staysaferbecausetheyheardthealarmandknewwhattodo.Doesthismeanthatplantstalktoeachother?Scientistsdon’tknow.Maybethefirstplantjustmadeacryofpainorwassendingamessagetoitsownbranches,andso,ineffect,wastalkingtoitself.Perhapstheneighborsjusthappenedto“overhear”thecry.Soinformationwasexchanged,butitwasn’tatrue,intentionalbackandforth.Charles

Darwin,

over

150

years

ago,

imagined

a

world

far

busier,

noisier

and

more

intimate(亲密的)

than

the

world

we

can

see

and

hear.

Our

senses

are

weak.

There’s

a

whole

lot

going

on.32.

What

does

a

plant

do

when

it

is

under

attack?A.

It

makes

noises.

B.

It

gets

help

from

other

plants.C.

It

stands

quietly

D.

It

sends

out

certain

chemicals.33.

What

does

the

author

mean

by

“the

tables

are

turned”

in

paragraph

3?A.

The

attackers

get

attacked.B.

The

insects

gather

under

the

table.C.

The

plants

get

ready

to

fight

back.D.

The

perfumes

attract

natural

enemies.34.Scientistsfindfromtheirstudiesthatplantscan.A.predictnaturaldisastersB.protectthemselvesagainstinsectsC.talktooneanotherintentionallyD.helptheirneighborswhennecessary35.whatcanweinferfromthelastparagraph?A.Theworldischangingfasterthanever.B.PeoplehavestrongersensesthanbeforeC.TheworldismoreplexthanitseemsD.PeopleinDarwin’stimewereimaginative.Passage2(2017·新课标III卷，C)Afteryearsofheateddebate,graywolveswerereintroducedtoYellowstoneNationalPark.FourteenwolveswerecaughtinCanadaandtransportedtothepark.Bylastyear,theYellowstonewolfpopulationhadgrowntomorethan170wolves.GraywolvesoncewereseenhereandthereintheYellowstoneareaandmuchofthecontinentalUnitedStates,buttheyweregraduallydisplacedbyhumandevelopment.Bythe1920s,wolveshadpracticallydisappearedfromtheYellowstonearea.TheywentfarthernorthintothedeepforestsofCanada,wheretherewerefewerhumansaround.Thedisappearanceofthewolveshadmanyunexpectedresults.Deerandelkpopulations—majorfoodsources(来源)forthewolf—grewrapidly.Theseanimalsconsumedlargeamountsofvegetation(植被),whichreducedplantdiversityinthepark.Intheabsenceofwolves,coyotepopulationsalsogrewquickly.Thecoyoteskilledalargepercentageofthepark’sredfoxes,andpletelydroveawaythepark’sbeavers.Asearlyas1966,biologistsaskedthegovernmenttoconsiderreintroducingwolvestoYellowstonePark.Theyhopedthatwolveswouldbeabletocontroltheelkandcoyoteproblems.Manyfarmersopposedtheplanbecausetheyfearedthatwolveswouldkilltheirfarmanimalsorpets.Thegovernmentspentnearly30yearsingupwithaplantoreintroducethewolvers.TheU.S.FishandWildlifeServicecarefullymonitorsandmanagesthewolfpacksinYellowstone.Today,thedebatecontinuesoverhowwellthegraywolfisfittinginatYellowstone.Elk,deer,andcoyotepopulationsaredown,whilebeaversandredfoxeshavemadeaeback.TheYellowstonewolfprojecthasbeenavaluableexperimenttohelpbiologistsdecidewhethertoreintroducewolvestootherpartsofthecountryaswell.28.Whatisthetextmainlyabout?A.WildliferesearchintheUnitedStates.B.PlantdiversityintheYellowstonearea.C.Theconflictbetweenfarmersandgraywolves.D.ThereintroductionofwolvestoYellowstonePark.29.Whatdoestheunderlinedword＂displaced＂inparagraph2mean?A.Tested. B.Separated. C.Forcedout. D.Trackeddown.30.Whatdidthedisappearanceofgraywolvesbringabout?A.Damagetolocalecology.B.Adeclineinthepark’sine.C.Preservationofvegetation.D.Anincreaseinthevarietyofanimals.31.Whatistheauthor’sattitudetowardstheYellowstonewolfproject?A.Doubtful. B.Positive. C.Disapproving. D.Uncaring.Passage3(2017·天津卷)Thismonth,Germany’stransportminister,AlexanderDobrindt,proposedthefirstsetofrulesforautonomousvehicles(自主驾驶车辆).Theywoulddefinethedriver’sroleinsuchcarsandgovernhowsuchcarsperformincrasheswherelivesmightbelost.Theproposalattemptstodealwithwhatsomecallthe“deathvalley”ofautonomousvehicles:thegreyareabetweensemiautonomousandfullydriverlesscarsthatcoulddelaythedriverlessfuture.Dobrindtwantsthreethings:thatacaralwayschoosesproperty(财产)damageoverpersonalinjury;thatitneverdistinguishesbetweenhumansbasedonageorrace;andthatifahumanremoveshisorherhandsfromthedrivingwheel—tocheckemail,say—thecar’smakerisresponsibleifthereisacrash.“Thechangetotheroadtrafficlawwillpermitfullyautomaticdriving,”saysDobrindt.Itwillputfullydriverlesscarsonanequallegalfootingtohumandrivers,hesays.Whoisresponsiblefortheoperationofsuchvehiclesisnotclearamongcarmakers,consumersandlawyers.“Theliability(法律责任)issueisthebiggestoneofthemall,”saysNatashaMeratattheUniversityofLeeds,UK.AnassumptionbehindUKinsurancefordriverlesscars,introducedearlierthisyear,insiststhatahuman“bewatchfulandmonitoringtheroad”ateverymoment.Butthatisnotwhatmanypeoplehaveinmindwhenthinkingofdriverlesscars.“Whenyousay‘driverlesscars’,peopleexpectdriverlesscars.”Meratsays.“Youknow—nodriver.”Becauseoftheconfusion,Meratthinkssomecarmakerswillwaituntilvehiclescanbefullyautomatedwithoutoperation.Driverlesscarsmayendupbeingaformofpublictransportratherthanvehiclesyouown,saysRyanCaloatStanfordUniversity,California.ThatishappeningintheUKandSingapore,wheregovernmentprovideddriverlessvehiclesarebeinglaunched.ThatwouldgodownpoorlyintheUS,however.“Theideathatthegovernmentwouldtakeoverdriverlesscarsandtreatthemasapublicgoodwouldgetabsolutelynowherehere,”saysCalo.46.Whatdoesthephrase“deathvalley”inParagraph2referto?A.Aplacewherecarsoftenbreakdown.B.Acasewherepassingalawisimpossible.C.Anareawherenodrivingispermitted.D.Asituationwheredrivers’roleisnotclear.47.TheproposalputforwardbyDobrindtaimsto__________.A.stoppeoplefrombreakingtrafficrulesB.helppromotefullyautomaticdrivingC.protectdriversofallagesandracesD.preventseriouspropertydamage48.Whatdoconsumersthinkoftheoperationofdriverlesscars?A.Itshouldgettheattentionofinsurancepanies.B.Itshouldbethemainconcernoflawmakers.C.Itshouldnotcausedeadlytrafficaccidents.D.Itshouldinvolvenohumanresponsibility.49.Driverlessvehiclesinpublictransportseenobrightfuturein_________.A.Singapore B.theUK C.theUS D.Germany50.Whatcouldbethebesttitleforthepassage?A.AutonomousDriving:WhoseLiability?B.FullyAutomaticCars:ANewBreakthroughC.AutonomousVehicles:DriverRemoved!D.DriverlessCars:RootofRoadAccidentsPassage4(2017·江苏卷)Beforebirth,babiescantellthedifferencebetweenloudsoundsandvoices.Theycanevendistinguishtheirmother’svoicefromthatofafemalestranger.Butwhenitestoembryoniclearning(胎教),birdscouldruletheroost.AsrecentlyreportedinTheAuk:OrnithologicalAdvances,somemotherbirdsmayteachtheiryoungtosingevenbeforetheyhatch(孵化).Newbornchickscanthenimitatetheirmom’scallwithinafewdaysofenteringtheworld.Thiseducationalmethodwasfirstobservedin2012bySoniaKleindorfer,abiologistatFlindersUniversityinSouthAustralia,andhercolleagues.FemaleAustraliansuperbfairywrenswerefoundtorepeatonesoundoverandoveragainwhilehatchingtheireggs.Whentheeggswerehatched,thebabybirdsmadethesimilarchirptotheirmothers—asoundthatservedastheirregular＂feedme!＂call.Tofindoutifthespecialqualitywasmorewidespreadinbirds,theresearcherssoughttheredbackedfairywren,anotherspeciesofAustraliansongbird.Firsttheycollectedsounddatafrom67nestsinfoursitesinQueenslandbeforeandafterhatching.Thentheyidentifiedbeggingcallsbyanalyzingtheorderandnumberofnotes.Aputeranalysisblindlyparedcallsproducedbymothersandchicks,rankingthembysimilarity.Itturnsoutthatbabyredbackedfairywrensalsoemergechirpingliketheirmoms.Andthemorefrequentlymothershadcalledtotheireggs,themoresimilarwerethebabies’beggingcalls.Inaddition,theteamsetupaseparateexperimentthatsuggestedthatthebabybirdsthatmostcloselyimitatedtheirmom’svoicewererewardedwiththemostfood.Thisobservationhintsthateffectiv