說明文主旨大意題突破Passage12022全國甲說明文-科學(xué)研究BGoffin’scockatoos,akindofsmallparrotnativetoAustralasia,havebeenshowntohavesimilarshape-recognitionabilitiestoahumantwo-year-old.Thoughnotknowntousetoolsinthewild,thebirdshaveprovedskilfulattoolusewhilekeptinthecage.Inarecentexperiment,cockatooswerepresentedwithaboxwithanutinsideit.Theclearfrontoftheboxhada“keyhole”inageometricshape,andthebirdsweregivenfivedifferentlyshaped“keys”tochoosefrom.Insertingthecorrect“key”wouldletoutthenut.Inhumans,babiescanputaroundshapeinaroundholefromaroundoneyearofage,butitwillbeanotheryearbeforetheyareabletodothesamewithlesssymmetrical(對稱的)shapes.Thisabilitytorecognizethatashapewillneedtobeturnedinaspecificdirectionbeforeitwillfitiscalledan“allocentricframeofreference”.Intheexperiment,Goffin’scockatooswereabletoselecttherighttoolforthejob,inmostcases,byvisualrecognitionalone.Wheretrial-and-errorwasused,thecockatoosdidbetterthanmonkeysinsimilartests.ThisindicatesthatGoffin’scockatoosdoindeedpossessanallocentricframeofreferencewhenmovingobjectsinspace,similartotwo-year-oldbabies.Thenextstep,accordingtotheresearchers,istotryandworkoutwhetherthecockatoosrelyentirelyonvisualclues(線索),oralsouseasenseoftouchinmakingtheirshapeselections.Howdidthecockatoosgetthenutfromtheboxintheexperiment?A.

Byfollowinginstructions.

B.

Byusingatool.C.

Byturningtheboxaround.

D.

Byremovingthelid.25.

Whichtaskcanhumanone-year-oldsmostlikelycompleteaccordingtothetext?A.

Usingakeytounlockadoor.

B.

Tellingparrotsfromotherbirds.C.

Puttingaballintoaroundhole.

D.

Groupingtoysofdifferentshapes.26.

Whatdoesthefollow-uptestaimtofindoutaboutthecockatoos?A.

Howfartheyareabletosee.

B.

Howtheytrackmovingobjects.C.

Whethertheyaresmarterthanmonkeys.

D.

Whethertheyuseasenseoftouchinthetest.27.Whichcanbeasuitabletitleforthetext?A.Cockatoos:QuickErrorCheckers B.Cockatoos:IndependentLearnersC.Cockatoos:CleverSignal-Readers D.Cockatoos:SkilfulShape-SortersPassage22020全國I說明文-科學(xué)研究DAccordingtoarecentstudyintheJournalofConsumerResearch,boththesizeandconsumptionhabitsofoureatingcompanionscaninfluenceourfoodintake.Andcontrarytoexistingresearchthatsaysyoushouldavoideatingwithheavierpeoplewhoorderlargeportions（份）,it’sthebeanpoleswithbigappetitesyoureallyneedtoavoid.Totesttheeffectofsocialinfluenceoneatinghabits,theresearchersconductedtwoexperiments.Inthefirst,95undergraduatewomenwereindividuallyinvitedintoalabtoostensibly（表面上）participateinastudyaboutmovieviewership.Beforethefilmbegan,eachwomanwasaskedtohelpherselftoasnack.Anactorhiredbytheresearchersgrabbedherfoodfirst.Inhernaturalstate,theactorweighed105pounds.Butinhalfthecasessheworeaspeciallydesignedfatsuitwhichincreasedherweightto180pounds.Boththefatandthinversionsoftheactortookalargeamountoffood.Theparticipantsfollowedsuit,takingmorefoodthantheynormallywouldhave.However,theytooksignificantlymorewhentheactorwasthin.Forthesecondtest,inonecasethethinactortooktwopiecesofcandyfromthesnackbowls.Intheothercase,shetook30pieces.Theresultsweresimilartothefirsttest:theparticipantsfollowedsuitbuttooksignificantlymorecandywhenthethinactortook30pieces.Thetestsshowthatthesocialenvironmentisextremelyinfluentialwhenwe’remakingdecisions.Ifthisfellowparticipantisgoingtoeatmore,sowillI.Callitthe“I’llhavewhatshe’shaving”effect.However,we’lladjusttheinfluence.Ifanoverweightpersonishavingalargeportion,I’llholdbackabitbecauseIseetheresultsofhiseatinghabits.Butifathinpersoneatsalot,I’llfollowsuit.Ifhecaneatmuchandkeepslim,whycan’tI?12.Whatistherecentstudymainlyabout?A.Foodsafety.B.Movieviewership.C.Consumerdemand. D.Eatingbehavior.13.Whatdoestheunderlinedword“beanpoles”inparagraph1referto?A.Bigeaters.B.Overweightpersons.C.Pickyeaters.D.Tallthinpersons.14.Whydidtheresearchershiretheactor?A.Toseehowshewouldaffecttheparticipants.B.Totestiftheparticipantscouldrecognizeher.C.Tofindoutwhatshewoulddointhetwotests.D.Tostudywhyshecouldkeepherweightdown.15.Onwhatbasisdowe“adjusttheinfluence”accordingtothelastparagraph?A.Howhungryweare.B.Howslimwewanttobe.C.Howweperceiveothers.D.Howwefeelaboutthefood.Passage32020課標(biāo)全國I說明文-新鮮科技DTheconnectionbetweenpeopleandplantshaslongbeenthesubjectofscientificresearch.Recentstudieshavefoundpositiveeffects.AstudyconductedinYoungstown,Ohio,forexample,discoveredthatgreenerareasofthecityexperiencedlesscrime.Inanother,employeeswereshowntobe15%moreproductivewhentheirworkplacesweredecoratedwithhouseplants.TheengineersattheMassachusettsInstituteofTechnology(MIT)havetakenitastepfurther—changingtheactualcompositionofplantsinordertogetthemtoperformdiverse,evenunusualfunctions.Theseincludeplantsthathavesensorsprintedontotheirleavestoshowwhenthey’reshortofwaterandaplantthatcandetectharmfulchemicalsingroundwater.“We’rethinkingabouthowwecanengineerplantstoreplacefunctionsofthethingsthatweuseeveryday,”explainedMichaelStrano,aprofessorofchemicalengineeringatMIT.Oneofhislatestprojectshasbeentomakeplantsglow(發(fā)光)inexperimentsusingsomecommonvegetables.Strano’steamfoundthattheycouldcreateafaintlightforthree-and-a-halfhours.Thelight,aboutone-thousandthoftheamountneededtoreadby,isjustastart.Thetechnology,Stranosaid,couldonedaybeusedtolighttheroomsoreventoturntreeintoself-poweredstreetlamps.Inthefuture,theteamhopestodevelopaversionofthetechnologythatcanbesprayedontoplantleavesinaone-offtreatmentthatwouldlasttheplant’slifetime.Theengineersarealsotryingtodevelopanonandoff“switch”wheretheglowwouldfadewhenexposedtodaylight.Lightingaccountsforabout7%ofthetotalelectricityconsumedintheUS.Sincelightingisoftenfarremovedfromthepowersource(電源)—suchasthedistancefromapowerplanttostreetlampsonaremotehighway—alotofenergyislostduringtransmission(傳輸).Glowingplantscouldreducethisdistanceandthereforehelpsaveenergy.32.Whatisthefirstparagraphmainlyabout?A.Anewstudyofdifferentplants.B.Abigfallincrimerates.C.Employeesfromvariousworkplaces.D.Benefitsfromgreenplants.33.WhatisthefunctionofthesensorsprintedonplantleavesbyMITengineer?A.Todetectplants’lackofwaterB.TochangecompositionsofplantsC.Tomakethelifeofplantslonger.D.Totestchemicalsinplants.34.Whatcanweexpectoftheglowingplantsinthefuture?A.Theywillspeedupenergyproduction.B.Theymaytransmitelectricitytothehome.C.Theymighthelpreduceenergyconsumption.D.Theycouldtaketheplaceofpowerplants.35.Whichofthefollowingcanbethebesttitleforthetext?A.Canwegrowmoreglowingplants? B.Howdowelivewithglowingplants?C.Couldglowingplantsreplacelamps? D.Howareglowingplantsmadepollution-free?Passage42021全國乙說明文社會現(xiàn)象分析BWhenalmosteveryonehasamobilephone,whyaremorethanhalfofAustralianhomesstillpayingforalandline（座機）?Thesedaysyou’dbehardpressedtofindanyoneinAustraliaovertheageof15whodoesn’townamobilephone.Infactplentyofyoungerkidshaveoneintheirpocket.Practicallyeveryonecanmakeandreceivecallsanywhere,anytime.Still,55percentofAustralianshavealandlinephoneathomeandonlyjustoveraquarter（29%）relyonlyontheirsmartphonesaccordingtoasurvey（調(diào)查）.OfthoseAustralianswhostillhavealandline,athirdconcedethatit’snotreallynecessaryandthey’rekeepingitasasecurityblanket—19percentsaytheyneveruseitwhileafurther13percentkeepitincaseofemergencies.Ithinkmyhomefallsintothatcategory.MorethanhalfofAustralianhomesarestillchoosingtostickwiththeirhomephone.Ageisnaturallyafactor（因素）—only58percentofGenerationYsstilluselandlinesnowandthen,comparedto84percentofBabyBoomerswho’veperhapshadthesamehomenumberfor50years.Ageisn’ttheonlyfactor;I’dsayit’salsotodowiththemakeupofyourhousehold.GenerationXerswithyoungfamilies,likemywifeandI,canstillfinditconvenienttohaveahomephoneratherthanprovidingamobilephoneforeveryfamilymember.Thatsaid,tobehonesttheonlypeoplewhoeverringourhomephoneareourBabyBoomersparents,tothepointwhereweplayagameandguesswhoiscallingbeforewepickupthephone（usingCallerIDwouldtakethefunoutofit）.Howattachedareyoutoyourlandline?Howlonguntiltheygothewayofgasstreetlampsandmorningmilkdeliveries?11.Whatdoesparagraph2mainlytellusaboutmobilephones?A.Theirtargetusers B.Theirwidepopularity.C.Theirmajorfunctions. D.Theircomplexdesign.12.Whatdoestheunderlinedword"concede"inparagraph3mean?

A.

Admit.B.

Argue.C.

Remembe.D.

Remark.13.WhatcanwesayaboutBabyBoomers?

A.

Theylikesmartphonegames.B.

Theyenjoyguessingcallers'identity.C.

Theykeepusinglandlinephone.D.

Theyareattachedtotheirfamily.14.Whatcanbeinferredaboutthelandlinefromthelastparagraph?

A.

Itremainsafamilynecessity.B.

Itwillfalloutofusesomeday.C.

Itmayincreasedailyexpenses.D.

Itisasimportantasthegaslight.Passage52022全國乙說明文-新鮮科技CCanasmallgroupofdrones(無人機)guaranteethesafetyandreliabilityofrailwaysand,atthesametime,helprailwayoperatorssavebillionsofeuroseachyear?Thatistheverylikelyfutureofapplyingtoday’s“eyesinthesky”technologytomakingsurethatthemillionsofkilometresofrailtracksandinfrastructure(基礎(chǔ)設(shè)施)worldwidearesafefortrainsona24/7basis.Dronesarealreadybeingusedtoexaminehigh-tensionelectricallines.Theycoulddopreciselythesamethingtoinspectrailwaylinesandothervitalaspectsofrailinfrastructuresuchasthecorrectpositionofrailwaytracksandswitchingpoints.Themoreregularlytheycanbeinspected,themorerailwaysafety,reliabilityan