高考真題閱讀理解科技說(shuō)明文匯編（科技類說(shuō)明文是閱讀中的難點(diǎn)，學(xué)生容易失分，有很大的區(qū)分度。因此，開展有針對(duì)性的訓(xùn)練很有必要，本匯編精選近年高考真題，以求把握難度，總結(jié)規(guī)律，達(dá)到事半功倍的效果，）（2020全國(guó)卷I）話題：植物新科技DTheconnectionbetweenpeopleandplantshaslongbeenthesubjectofscientificresearch.Recentstudieshavefoundpositiveeffects.AstudyconductedinYoungstown,Ohio,forexample,discoveredthatgreenerareasofthecityexperiencedlesscrime.Inanother，employeeswereshowntobe15%moreproductivewhentheirworkplacesweredecoratedwithhouseplants.TheengineersattheMassachusettsInstituteofTechnologyCMIT）havetakenitastepfurtherchangingtheactualcompositionofplantsinordertogetthemtoperformdiverse,evenunusualfunctions.Theseincludeplantsthathavesensorsprintedontotheirleavestoshowwhenthey,reshortofwaterandaplantthatcandetectharmfulchemicalsingroundwater."We,rethinkingabouthowwecanengineerplantstoreplacefunctionsofthethingsthatweuseeveryday,”explainedMichaelStrano,aprofessorofchemicalengineeringatMIT.Oneofhislatestprojectshasbeentomakeplantsgrow（發(fā)光）inexperimentsusingsomecommonvegetables.Strano,steamfoundthattheycouldcreateafaintlightforthree-and-a-halfhours.Thelight,aboutone-thousandthoftheamountneededtoreadby,isjustastart.Thetechnology,Stranosaid,hefuture,theteamhopestodevelopaversionofthetechnologythatcanbesprayedontoplantleavesinaone-offtreatmentthatwouldlasttheplant,slifetime.Theengineersarealsotryingtodevelopanonandoff"switch"wheretheglowwouldfadewhenexposedtodaylight.Lightingaccountsforabout7%ofthetotalelectricityconsumedintheUS.Sincelightingisoftenfarremovedfromthepowersource（電源）-suchasthedistancefromapowerplanttostreetlampsonaremotehighway-alotofenergyislostduringtransmission（傳輸）.Glowingplantscouldreducethisdistanceandthereforehelpsaveenergy.Whatisthefirstparagraphmainlyabout?Anewstudyofdifferentplants.Abigfallincrimerates.Employeesfromvariousworkplaces.Benefitsfromgreenplants.WhatisthefunctionofthesensorsprintedonplantleavesbyMITengineer?Todetectplants,lackofwaterTochangecompositionsofplantsTomakethelifeofplantslonger.Totestchemicalsinplants.Whatcanweexpectoftheglowingplantsinthefuture?Theywillspeedupenergyproduction.Theymaytransmitelectricitytothehome.Theymighthelpreduceenergyconsumption.Theycouldtaketheplaceofpowerplants.Whichofthefollowingcanbethebesttitleforthetext?Canwegrowmoreglowingplants?Howdowelivewithglowingplants?Couldglowingplantsreplacelamps?Howareglowingplantsmadepollution-free?（2019全國(guó)卷I）話題：利用生物信息進(jìn)行身份識(shí)別CAsdataandidentitytheftbecomesmoreandmorecommon,themarketisgrowingforbiometric（生物測(cè)量）technologies—likefingerprintscans—tokeepothersoutofprivatee-spaces.Atpresent,thesetechnologiesarestillexpensive,though.ResearchersfromGeorgiaTechsaythattheyhavecomeupwithalowcostdevice（裝置）thatgetsaroundthisproblem:asmartkeyboard.Thissmartkeyboardpreciselymeasuresthecadence（節(jié)奏）withwhichonetypesandthepressurefingersapplytoeachkey.Thekeyboardcouldofferastronglayerofsecuritybyanalyzingthingsliketheforceofauser,stypingandthetimebetweenkeypresses.Thesepatternsareuniquetoeachperson.Thus,thekeyboardcandeterminepeople,sidentities,andbyextension,whethertheyshouldbegivenaccesstothecomputerit'sconnectedto—regardlessofwhethersomeonegetsthepasswordright.Italsodoesn,trequireanewtypeoftechnologythatpeoplearen,talreadyfamiliarwith.Everybodyusesakeyboardandeverybodytypesdifferently.Inastudydescribingthetechnology,theresearchershad100volunteerstypetheword"touch"fourtimesusingthesmartkeyboard.Datacollectedfromthedevicecouldbeusedtorecognizedifferentparticipantsbasedonhowtheytyped,withverylowerrorrates.Theresearcherssaythatthekeyboardshouldbeprettystraightforwardtocommercializeandismostlymadeofinexpensive,plastic-likeparts.Theteamhopestomakeittomarketinthenearfuture.28.Whydotheresearchersdevelopthesmartkeyboard?A.Toreducepressureonkeys. B.ToimproveaccuracyintypingC.Toreplacethepasswordsystem. D.Tocutthecostofe-spaceprotection.Whatmakestheinventionofthesmartkeyboardpossible?Computersaremucheasiertooperate.Fingerprintscanningtechniquesdevelopfast.Typingpatternsvaryfrompersontoperson.Datasecuritymeasuresareguaranteed.Whatdotheresearchersexpectofthesmartkeyboard?A.It,llbeenvironment-friendly. B.It,llreachconsumerssoon.C.It,llbemadeofplastics. D.It'llhelpspeeduptyping.Whereisthistextmostlikelyfrom?A.Adiary. B.Aguidebook C.Anovel. D.Amagazine.（2018全國(guó)卷I）話題：不同電器設(shè)備耗電研究DWemaythinkwe,reaculturethatgetsridofourworntechnologyatthefirstsightofsomethingshinyandnew,butanewstudyshowsthatwekeepusingourolddevices（裝置）wellaftertheygooutofstyle.Thafsbadnewsfortheenvironment-andourwallets-astheseoutdateddevicesconsumemuchmoreenergythantheneweronesthatdothesamethings.Tofigureouthowmuchpowerthesedevicesareusing,CallieBabbittandhercolleaguesattheRochesterInstituteofTechnologyinNewYorktrackedtheenvironmentalcostsforeachproductthroughoutitslife-fromwhenitsmineralsareminedtowhenwestopusingthedevice.Thismethodprovidedareadoutforhowhomeenergyusehasevolvedsincetheearly1990s.Devicesweregroupedbygeneration.Desktopcomputers,basicmobilephones,andbox-setTVsdefined1992.Digitalcamerasarrivedonthescenein1997.AndMP3players,smartphones,andLCDTVsenteredhomesin2002,beforetabletsand-readersshowedupin2007.Asweaccumulatedmoredevices,however,wedidn,tthrowoutouroldones.“Thelivi-roomtelevisionisreplacedandgetsplantedinthekids,room,andsuddenlyoneday,youhaveaTVineveryroomofthehouse,”saidoneresearcher.Theaveragenumberofelectronicdevicesrosefromfourperhouseholdin1992to13in2007.We,renotjustkeepingtheseolddevices-wecontinuetousethem.AccordingtotheanalysisofBabbitt,steam,olddesktopmonitorsandboxTVswithcathoderaytubesaretheworstdeviceswiththeirenergyconsumptionandcontributiontogreenhousegasemissions（排放）morethandoublingduringthe1992to2007window.Sowhat,sthesolution（解決方案）？Theteam,sdataonlywentupto2007,buttheresearchersalsoexploredwhatwouldhappenifconsumersreplacedoldproductswithnewelectronicsthatservemorethanonefunction,suchasatabletforwordprocessingandTVviewing.Theyfoundthatmoreon-demandentertainmentviewingontabletsinsteadofTVsanddesktopcomputerscouldcutenergyconsumptionby44%.Whatdoestheauthorthinkofnewdevices?A.Theyareenvironment-friendly. B.Theyarenobetterthantheold.C.Theycostmoretouseathome. D.Theygooutofstylequickly.WhydidBabbitfsteamconducttheresearch?Toreducethecostofminerals.Totestthelifecycleofaproduct.Toupdateconsumersonnewtechnology.Tofindoutelectricityconsumptionofthedevices.Whichofthefollowingusestheleastenergy?A.Thebox-setTV. B.Thetablet.C.TheLCDTV.D.Thedesktopcomputer.Whatdoesthetextsuggestpeopledoaboutoldelectronicdevices?A.Stopusingthem. B.Takethemapart.C.Upgradethem. D.Recyclethem.（2020全國(guó)卷II）話題：海貍鼠毛皮的利用問題CWhenyouweretryingtofigureoutwhattobuyfortheenvironmentalistonyourholidaylist,furprobablydidn'tcrossyourmind.Butsomeecologistsandfashion（時(shí)裝）enthusiastsaretryingtobringbackthemarketforfurmadefromnutria海貍鼠）.UnusualfashionshowsinNewOrleansandBrooklynhave（showcased）nutriafurmadeintoclothesindifferentstyles.“Itsoundscrazytotalkaboutguilt-freefur-unlessyouunderstandthatthenutriaaredestroyingvastwetlandseveryyear”,saysCreeMcCree,projectdirectorofRighteousFur.ScientistsinLouisianaweresoconcernedthattheydecidedtopayhunters$5atail.SomeofthefurendsupinthefashionshowsliketheoneinBrooklynlastmonth.NutriawerebroughttherefromArgentinabyfurfarmersandletgointothewild.“Theecosystemdowntherecan,thandlethisnon-nativespecies（物種）.氏飛destroyingtheenvironment.It,sthemorus."saysMichaelMassimi,anexpertinthisfield.Thefurtradekeptnutriacheckfordecades,butwhenthemarketfornutriacollapsedinthelate1980s,thecat-sizedanimalsmultipliedlikecrazy.BiologistEdmondMoutonrunsthenutriacontrolprogramforLouisiana.Hesaysit,snoteasytoconvincepeoplethatnutriafurisgreen,buthehasnodoubtaboutit.Huntersbringinmorethan300,000nutriatailsayear,sopartofMouton,sjobthesedaysistryingtopromotefur.Thenthere,sRighteousFuranditsunusualfashion.Morgansays,“Togivepeopleaguilt-freeoptionthattheycanwearwithoutsomeonethrowingpaintonthem—1thinkthafsgoingtobeamassivething,atleasthereinNewYork.”DesignerJenniferAndersonadmitsittookherawhiletocomearoundtotheopinionthatusingnutriafurforhercreationsismorallyacceptable.Shetryingtocomeupwithalabletoattachtonutriafashionstoshowitiseco-friendly.WhatisthepurposeofthefashionshowsinNewOrleansandBrooklyn?Topromoteguilt-freefur.Toexpandthefashionmarket.Tointroduceanewbrand.Tocelebrateawinterholiday.Whyarescientistsconcernedaboutnutria?Nutriadamagetheecosystemseriously.Nutriaareanendangeredspecies.C.Nutriahurtlocalcat-sizedanimals.D.Nutriaareillegallyhunted.Whatdoestheunderlinedword“collapsed”inparagraph5probablymean?A.Boomed. B.Becamemature. C.Remainedstable. D.Crashed.WhatcanweinferaboufwearingfurinNewYorkaccordingtoMorgan?A.It,sformal. B.It,srisky. C.It,sharmful. D.It,straditional.（2017全國(guó)卷I）話題：戶外自制蒸餾器DAbuld-it-yourselfsolarstill（蒸餾器）isoneofthebestwaystoobtaindrinkingwaterinareaswheretheliquidisnotreadilyavailable.DevelopedbytwodoctorsintheU.S.DepartmentofAgriculture,it,sanexcellentwatercollector.Unfortunately,youmustcarrythenecessaryequipmentwithyou,sinceit'sallbutimpossibletofindnaturalsubstitutes.Theonlycomponentsrequired,though,area5' 5'sheetofclearorslightlymilkyplastic,sixfeetofplastictube,andacontainer—perhapsjustadrinkingcup—tocatchthewater.Thesepiecescanbefoldedintoaneatlittlepackandfastenedonyourbelt.Toconstructaworkingstill,useasharpstickorrocktodigaholefourfeetacrossandthreefeetdeep.Trytomaketheholeinadampareatoincreasethewatercatchersproductivity.Placeyourcupinthedeepestpartofthehole.Thenlaythetubeinplacesothatoneendrestsallthewayinthecupandtherestofthelinerunsup—andout—thesideofthehole.Next,covertheholewiththeplasticsheet,securingtheedgesoftheplasticwithdirtandweightingthesheefscenterdownwitharock.Theplasticshouldnowformacone（圓錐體）with45-degree-angledsides.Thelowpointofthesheetmustbecentereddirectlyover,andnomorethanthreeinchesabove,thecup.Thesolarstillworksbycreatingagreenhouseundertheplastic.Groundwaterevaporates（蒸發(fā)）andcollectsonthesheetuntilsmalldropsofwaterform,rundownthematerialandfalloffintothecup.Whenthecontainerisfull,youcansucktherefreshmentzxxkoutthroughthetube,andwon,thavetobreakdownthestilleverytimeyouneedadrink.Whatdoweknowaboutthesolarstillequipmentfromthefirstparagraph?A.It,sdelicate. B.It,sexpensive.C.It,scomplex. D.It,sportable.Whatdoestheunderlinedphrase“thewatercatcher”inparagraph2referto?A.Thetube. B.Thestill.C.Thehole. D.Thecup.What,sthelaststepofconstructingaworkingsolarstill?A.Digaholeofacertain size. B.Putthecupinplace.C.Weightthesheet,s centerdown. D.Coverthe hole withtheplasticsheet.Whenasolarstillworks,dropsofwatercomeintothecupform .A.theplastictube B.outsidetheholeC.theopenair D.beneaththesheet（2016全國(guó)卷I）話題：不同文化背景下的沉默內(nèi)涵Themeaningofsilencevariesamongculturalgroups.Silencesmaybethoughtful,ortheymaybeemptywhenapersonhasnothingtosay.Asilenceinaconversationmayalsoshowstubbornness,orworry.Silencemaybeviewedbysomeculturalgroupsasextremelyuncomfortable;thereforeattemptsmaybemadetofilleverygapwithconversation.Personsinotherculturalgroupsvaluesilenceandviewitasnecessaryforunderstandingaperson'sneeds.ManyNativeAmericansvaluesilenceandfeelitisabasicpartofcommunicatingamongpeople,justassometraditionalChineseandThaipersonsdo.Therefore,whenapersonfromoneoftheseculturesisspeakingandsuddenlystops,whatmaybeimplied（暗示）isthatthepersonwantsthelistenertoconsiderwhathasbeensaidbeforecontinuing.Inthesecultures,silenceisacallforreflection.Otherculturesmayusesilenceinotherways,particularlywhendealingwithconflictsamongpeopleorinrelationshipsofpeoplewithdifferentamountsofpower.Forexample,Russian,French,andSpanishpe