高考英語閱讀理解之說明文練習題

專題02閱讀理解之說明文1.（2020屆江西省重點中學盟校高三第一次聯(lián)考）Scientistssaythey'vedevelopedasystemusingmachinelearningtopredictwhenandwherelightingwillstrike.TheresearchwasledbyengineersfromtheSwissFederalInstituteofTechnologyinLausanne,Switzerland.Europeanresearchershaveestimatedthatbetween6,000and24,000peoplearekilledbylightningworldwideeachyear.Thestrikescanalsocausepoweroutages,destroyproperty,damageelectricalequipmentandstartforestfires.Forthesereasons,climatescientistshavelongsoughttodevelopmethodstopredictandcontrollightning.IntheUnitedStatesandotherplaces,ground-basedsensingdevicesareusedtoidentifystrikesastheyhappen.But,nosystemhasbeencreatedtoeffectivelypredictlightning.Thesystemtestedintheexperimentsusedacombinationofdatafromweatherstationsandmachinelearningmethods.Theresearchersdevelopedapredictionmodelthatwastrainedtorecognizeweatherconditionsthatwerelikelytocauselightning.Themodelwascreatedwithdatacollectedovera12-yearperiodfrom12Swissweatherstationsincitiesandmountainareas.Thedatarelatedtofourmainsurfaceconditions:airpressure,airtemperature,relativehumidityandwindspeed.Theatmosphericdatawasplacedintoamachinelearningalgorithm（算法）,whichcomparedittorecordsoflightningstrikes.Researcherssaythealgorithmwasthenabletolearntheconditionsunderwhichlightninghappens.AmirhosseinMostajabiisaPhDstudentattheinstitutewholedthedevelopmentofthemethod.Hesaid,“currentsystemsforgatheringsuchdataareslowandcomplexandrequirecostlycollectionequipmentlikeradarorsatellites.”“Ourmethodusesdatathatcanbeobtainedfromanyweatherstation,”Mostajabisaid.“Thiswillimprovedatacollectioninveryremoteareasnotcoveredbyradarandsatelliteorinplaceswherecommunicationsystemshavebeencut,”beadded.TheresearchersplantokeepdevelopingthetechnologyinpartnershipwithaEuropeaneffortthataimstocreatealightningprotectionsystem.TheeffortiscalledtheEuropeanLaserLightningRodproject.8．Whyhaveclimatescientiststriedtopredictandcontrollighting?A．Tocollectrelativedata.B．Toreducethedestructionlightninghasbeencausing.C．Tocreateascientificsystem.D．Todoresearchinrelationtomachinelearning.9．ThefourmentionedsurfaceconditionsincludeallthefollowingEXCEPT________.A．airpollution B．windspeedC．relativehumidity D．airtemperature10．Whatdoestheunderlinedword“it”inparagraph5referto?A．lighting. B．thesystembeingtested.C．theatmosphericdata. D．themachinelearningalgorithm.11．WhatcanwelearnaboutMostajabifromthepassage?A．Hedevelopedthemethodandthesystemhimself.B．Hethinksthecurrentsystemsaretooslowandsimple.C．HeisaprofessorattheSwissFederalInstituteofTechnology.D．Hebelievestheirsystemdoesmuchbetterindatacollection.2.（2020屆遼寧省大連市第二十四中學高三模擬）SHORTLISTOFLONDON'SBESTIfyouhavelimitedvisitingtimewerecommendyoufollowthislist.1)HousesofParliament.TheguidedtoursoftheHousesofParliamentareexcellent,inanylanguageyouwant,andgetyoutoplacesthatevennormalBritscan't.However,whenParliamentissitting,theyarenotrunning,butyoucanstillgetin.2)HamptonCourt.WeratethisasoneofthebestattractionsinEurope.AwholesuccessionofkingsandqueenshaveaddedtoHenryVIII’soriginalpalace.Therelieafantasticpark(byCapabilityBrown)andgardens(includingthefamousmaze),andTudorkitchensandoneofthelastremainingRealTenniscourts.Lotsoffree(onceyou'vepaidtheadmission)guidedtours,someincostume,bypeoplewhoknowandlovetheplace.It'salsosurroundedbyaseriesofparksandmakesagreatdestinationforabiketrip-trainout(30minutesfromWaterloo),bikeback(12miles)alongtheriver.WepreferittotheTowerofLondon-you'llprobablywanttovisitboth,itknocksthespotsoffBuckinghamPalace.3)TheRiver.WalkalongtheSouthBankfromTowerBridgetoLambeth.ThebestofLondonisspreadoutforyou:TheTowerofLondon&TowerBridge,TheHousesofParliament,LambethPalace(residenceoftheArchbishopofCanterbury),Shakespeare'sGlobetheatre,BothTateGalleries,StPaul'sCathedral,TheSouthBankCentre,TheTemple,TheLondonEye,WestminsterAbbey,SomersetHouse.(A2hourwalkifyoudon'tstopforlong).OryoucantakeaboatouttoGreenwich,theThamesBarrierortheDome.4)WestminsterAbbey.WheretheycrownKings.Anunreasonableadmissioncharge(shouldreallybefreeorvoluntarydonation),butamasterpieceanyway.Ifyougetboredofwaitinginthequeue,orpackeddownbythecrowds,hurryyourselfofftotheCitywherethere'smoresquarespaceofhistoricchurch,andempty.5)TheTheatre.It'dbeacrimetovisitLondonandnottakeinashow.Londonershavebeenpassionateabouttheatreforcenturies.Notonlyisthequalityhigh,butthepriceislow—onethirdthepriceofBroadway.1．WhichtourwillaforeignstudentstudyingthehistoryofBritishRoyalFamilymostprobablyprefer？A．thetourtoWestminsterAbbey B．thetourtoTowerBridgeC．thetourtoSomersetHouse D．thetourtoHamptonCourt2．Whattimedoestheunderlinedstatement“whenParliamentissitting”inparagraph2referto?A．whentheParliamentisnotofficiallyinsession.B．whenthemembersofParliamentaredebatingoverahotissue.C．whentheParliamentisstayingidleforrepairs.D．whenthemembersofParliamentaretakingabreakaftersomeexercise3．WhyareLondonersfondoftheatre?A．Theyenjoythecriminaldramaplots.B．Theyenjoytheinexpensiveadmission.C．TheyenjoytheClassicalMusicandOpera.D．TheyenjoythesceneofShakespeare’sGlobetheatre.3.（2020屆遼寧省大連市第二十四中學高三模擬）Bynowyou’veprobablyheardaboutthe“you’renotspecial”speech,whenEnglishteacherDavidMcCulloughtoldgraduatingseniorsatWellesleyHighSchool:“Donotgettheideayou'reanythingspecial,becauseyou'renot.”Mothersandfatherspresentattheceremony-andawholelotofotherparentsacrosstheinternet-tookissuewithhisego-puncturingwords.Butlostintheangerandprotestwassomethingwereallyshouldbetakingtoheart:ouryoungpeopleactuallyhavenoideawhetherthey'reparticularlytalentedoraccomplishedornot.Inoureagernesstoelevatetheirself-esteem,weforgottoteachthemhowtorealisticallyassesstheirownabilities,acrucialrequirementforgettingbetteratanythingfrommathtomusictosports.Infact,it'snotjustprivilegedhigh-schoolstudents:wealltendtoviewourselvesasaboveaverage.Suchinflated(膨脹的)self-judgmentshavebeenfoundinstudyafterstudy,andit'softenexactlywhenwe'releastcompetentatagiventaskthatwerateourperformancemostgenerously.Ina2006studypublishedinthejournalMedicalEducation,forexample,medicalstudentswhoscoredthelowestonanessaytestwerethemostcharitableintheirself-evaluations,whilehigh-scoringstudentsjudgedthemselvesmuchmorestrictly.Poorstudents,theauthorsnote,"lackinsight"intotheirowninadequacy.Whyshouldthisbe?Anotherstudy,ledbyCornellUniversitypsychologistDavidDunning,offersanenlighteningexplanation.Peoplewhoareincompetent,hewriteswithco-authorJustinKruger,sufferfroma“dualburden”:they'renotgoodatwhattheydo,andtheirineptness(笨拙)preventsthemfromrecognizinghowbadtheyare.InDunningandKruger'sstudy,subjectsscoringatthebottomoftheheapontestsoflogic,grammarandhumor"extremelyoverestimated"theirtalents.Althoughtheirtestscoresputtheminthe12thpercentile,theyguessedtheywereinthe62nd.Whattheseindividualslacked(inadditiontoclearlogic,propergrammarandasenseofhumor)was"metacognitiveskill"(元認知技巧):thecapacitytomonitorhowwellthey'reperforming.Intheabsenceofthatcapacity,thesubjectsarrivedatanoverlyhopefulviewoftheirownabilities.There'saparadox(悖論)here,theauthorsnote:“Theskillsthatdevelopcompetenceinaparticulardomainareoftentheverysameskillsnecessarytoevaluatecompetenceinthatdomain.”Inotherwords,togetbetteratjudginghowwellwe’redoingatanactivity,wehavetogetbetterattheactivityitself.Thereareacoupleofwaysoutofthisdoublebind(兩難).First,wecanlearntomakehonestcomparisonswithothers.Trainyourselftorecognizeexcellence,evenwhenyouyourselfdon'tpossessit,andcomparewhatyoucandoagainstwhattrulyexcellentindividualsareabletoaccomplish.Second,seekoutfeedbackthatisfrequent,accurateandspecific.Findacriticwhowilltellyounotonlyhowpoorlyyou'redoing,butjustwhatitisthatyou'redoingwrong.AsDunningandKrugernote,successindicatestousthateverythingwentright,butfailureismoreambiguous:anynumberofthingscouldhavegonewrong.Usethisexternalfeedbacktofigureoutexactlywhereandwhenyouscrewedup.Ifweadoptthesestrategies-andmostimportantly,teachthemtoourchildren-theywon'tneedparents,oracommencement(畢業(yè)典禮)speaker,totellthemthatthey'respecial.They'llalreadyknowthattheyare,orhaveaplantogetthatway.8．Whatdoestheunderlinedphrase“tookissuewith”inparagraph1mostprobablymean?A．totallyapprovedof B．disagreedwithC．fullyunderstood D．helddiscussionabout9．Whatistheproblemthatshouldn'tbeoverlookedintheauthor’sopinion?A．wedon’tknowwhetherouryoungpeoplearetalentedornotB．youngpeoplecan'treasonablydefinethemselvesC．norequirementissetupforyoungpeopletogetbetterD．wealwaystendtoconsiderourselvestobeprivileged10．WhichisNOTmentionedaboutpoorstudentsaccordingtothepassage?A．Theylackthecapacitytomonitorhowwelltheyareperforming.B．Theyusuallygivethemselveshighscoresinself-evaluations.C．Theytendtobeunabletoknowexactlyhowbadtheyare.D．Theyareintelligentlyinadequateintestsandexams.11．Whatdoesthestrategiesofbecomingspecialsuggest?A．thebestwaytorecognizeexcellenceistostudypastsuccessandfailureB．throughcomparisonwithothers,onewillknowwhereandwhenhefailsC．weneedinternalhonestywithourselvesandexternalhonestyfromothersD．neitherparentsnoracommencementspeakercantellwhetheroneisspecial4.（2020屆遼寧省錦州市高三一模）Jellyfishareunusualcreatures.They’reneitherfishnorjelly.Someareamongthemostcolourfulcreaturesintheworld,butit’sbesttolookbutnottouchtheseinvertebrates（無脊椎動物）.Notonlyaretheyveryfragilecreatures,butmanygiveapainfulsting,andsomeareevendeadly.Whetheryouadmiretheminanaquariumortrytoavoidtheminthewild,youwon’tbeabletogetthesefascinatingjellyfishfactsoutofyourhead.Here’sajellyfishfactthatmightcomeinhandy:Thereareseveralnamesforagroupofjellyfish.Theyincludesmack,bloom,andswarm.Choosethewordyoupreferdependingonwhetheryouthinkthejellyfishpacklookslikeagardenofbloomingflowersormorelikeafrighteningpackofstingers,andwhetheryou’readmiringthematanaquariumorifyouandyourfellowsnorkelersaresurrounded.Jellyfishhavetwomainformsintheirlifecyclethatlookquitedifferentfromeachother.ScientificAmericanexplainsthatanadultjellyfish,calledamedusa,hasabell-shapedbodywithtentacles（觸須）flowingdownbelowit.Youngjellyfish,calledpolyps,lookmorelikeseaanemones,withshortertentaclesthatflowupabovethemainbody.Medusasreproducebyreleasingeggs.MelanieRoberts,SeniorAquaristatSeaWorldOrlando,saysthatthelargestjellyfishintheworldisalion’smanejellyfish.Thebodyofthisbeautifulorangejellycangrowuptothreefeetindiameter.Withits12,000tentaclesthatcangrow120feetlong,Oaddsthatthelion’smanejellycomparesinsizetotheplanet’slargestanimal:thebluewhale.Regardlessoftheirsize,jellyfisharemostlymadeofwater.Infact,they’reabout95percentwater.Thesecreaturesdon’thavebrains,blood,orbones.Andmostjellyfishdon’thaveeyes.Jellyfishalsousetheirmouthsbothforeatingandforwasteremoval.8．Whycan’twetouchjellyfish?A．Becausetheymaybestung.B．Becausetheymaydieeasily.C．Becausetheymayfeelpainful.D．Becausetheymayhurtpeople.9．Whatarejellyfishnamedafter?A．Itssize. B．Itscolor.C．Itsappearance. D．Itslifestyle.10．Whatcanwelearnfromthepassage?A．Mouthisanimportantorganforjellyfish.B．Polypscanclonethemselvesbylayingeggs.C．Thelargestjellyfishintheworldis120feetlong.D．Medusashavetentaclesflowingupabovethebody.11．Whatcanbethebesttitleofthepassage?A．Severalfactsaboutjellyfish.B．Thetwomainformsofjellyfish.C．Jellyfishareneitherfishnorjelly.D．Jellyfishhavemanydifferentnames.5.（2020屆遼寧省錦州市高三一模）Fancyyourownsatellite?ArizonaStateUniversityisworkingtowardsmakingthisarealitywithitsSunCubeFemtoSatproject.SmallerthanastandardCubeSat,thelow-caststudent-designedspacecraftisaimedatprovidinggreateraccesstospaceforscientistsandhobbyistsalike.AssistantprofessorJekanThangaandateamofstudentshavebeendevelopingtheSunCubeFemtoSatforthepasttwoyears.Thesmall3×3×3cmcubeweighsinatjust35gandalonger(3×3×9cm,100g)modelhasalsobeendesigned,whichincludesstoragespace.EachSunCubeFemtoSathasitsowncommunication,datacollectionandpropulsion(推進)systemsandispoweredbysolarpanels.Itismadeofoff-the-shelfpartsthatareavailableinshops,andtheenergy-efficientsolarpanelsarecutfromscrap(碎片),whichmakesitsaveenergy,soldatadiscountbymanufacturers.“Withaspacecraftofthissize,anyuniversitycandoit,”saysThanga.“That’spartofourmajorgoal—spacediscoveryforeverybody.”TheteamsaysthatwhilelaunchingyourownsatellitewouldusuallycostbetweenUS$60,000-70,000perkilo,itwouldonlycost$1,000tosendaSunCubeFemtoSattotheInternationalSpaceStation,and$3,000tosenditintolowearthorbit.Leavingtheearth’sgravitywouldcostanestimated$27,000.TheFemtoSatwouldbepackedwitha“jackinthebox”stylesystemthatmatchesstandardCubeSatsizes(around10cubiccm),simplifyingtheprocessofgettingthetinysatelliteintoorbit.NASAhassent30CubeSatsintospaceoverthelastyears,withanother50awaitinglaunch.ThangaandhisstaffviewtheFemtoSatasastartingpointforscientistsandstudents,andevenhopethedevicecouldbeboughtonthewebsitelikeAmazononeday.Thangaimaginesdevelopingfourmainapplicationsforthedevice,includinghands-ontestingexperiencesforstudents,andartificialgravityexperiments.Inaddition,groupsofSunCubeFemtoSatscouldeventuallybeabletodothejoboflargerspacecraftatavastlydiscountedcost.12．WhatisthemajorgoaloftheSunCubeFemtoSatproject?A．Toactonteachinginouterspace. B．Toprovideaccesstospacecraftdesign.C．Tohelpcarryoutaclassroomexperiment. D．Tohelpaverageindividualsexplorespace.13．WhatisspecialaboutSunCubeFemtoSats?A．Theyareofthesamesize. B．Theyareenergy-efficient.C．Theyaremainlydesignedforlabuse. D．Theyaremainlyusedtocollectinformation.14．WhatdoesThangaexpectofSunCubeFemtoSats?A．They’llbeavailableonline. B．They’llbeprovidedforfree.C．They’llmatchthesizeofCubeSats. D．They’llbesentintospacewithCubeSats.15．Whatcanbethebesttitleforthetext?A．FemtoSatsWillRuleSpace B．YourOwnSatelliteIsComingC．GoingintoSpaceHasBeenAfforable D．YoucanDesignYourOwnSpacecraft6.（2020屆遼寧省遼陽市高三一模）MostofEarth’sfreshwatersitsunderground.Worldwide,about70percentofthegroundwaterdrawntothesurfacegoesforfarming.Butsurfacewaters—riversandstreams—comefromgroundwater,too.Drawingtoomuchgroundwateroverashorttimecanbeharmful.Naturalwaterwayscanbegintoempty.Andthatcanhurtfreshwaterecosystems.Scientistsconsiderthisatippingpointwhensmallactionscanbeginmakingunusuallybigdifferences.Anewstudyhasfoundthat15to21percentoftappedwater(自來水)areashavereachedthissortoftippingpoint.Mostofthosetappedriversandstreamsareindryareas.Farmersintheseareasusegroundwatertowatertheircrops.Atpresentdrawingrates,thestudypredictsthat42to79percentofwaterareasaroundtheworldwheregroundwaterisdrawnupforuseatthesurfacewillreachtippingpointsby2050.Ahealthygroundwateraquifer(含水層)protectsecosystemsagainstseasonalupsanddownsintheuseofwater.Thatprovidesstabilityforareaplantsandanimals.Butiftoomuchgroundwaterisdrawnupfrombelow,surfacewaterswillbegintoflowintotheaquifer,whichcanharmwhatarelivinginriversandstreams.DeGraafandthestudyteamsetupacomputermodel.Itlinkedgroundwaterdrawingandwaterflowswithinrivers.Themodelcoveredfiftyyears,from1960to2010.Thentheresearchersusedclimateforecaststohelpthemodelpredictwhatmighthappeninfutureyears.Throughout,theykeptgroundwaterdrawingratessustainable.Morethanhalfofdrawnwaterareasarelikelytocrossthisecologicaltippingpointbefore2050,themodelfinds.“Weneedtobethinkingaboutthisnow,notin10years,”DeGraafsays.“Ourstudyshowsuswheretotargetmoresustainableefforts.”8．Whatdoesthe“tippingpoint”inparagraph1mean?A．Endpoint. B．Breakingpoint.C．Freezingpoint. D．Boilingpoint.9．Whatisthewriter’spurposeofwritingthetext?A．Warnusthatthesurfacewatercanpollutethegroundwater.B．Warnusofwateringthecropbygroundwater.C．Tellustherelationofgroundwaterandsurfacewater.D．Warnusthattheoveruseofgroundwatercandestroytheecosystem.10．Whatisthepartthegroundwaterplaysintheenvironment?A．Keepingthestabilityofnaturalwater.B．Protectingecosystemsfrompollution.C．Clearingsurfacewaterstobedrinkable.D．Providingstabilityforthelocaleconomy.11．Howdidtheresearchersconductthestudy?A．Theypredictedtheresultbasedontheolddata.B．Theyhappenedtoworkouttheresult.C．Theymeasuredallthegroundwaterandsurfacewater.D．Theydidquestionnairesurveysonthewaterinformation.7.（2020屆遼寧省遼陽市高三一模）Extrafingersarenotthatrare.Aboutoneortwoinevery1,000babiesarebornwithextrafingers.Iftheextrasarejustsmallnubs(腫塊),theymaybesurgicallyremovedatbirth.Butsomeextrafingerscanprovehelpful,anewstudyshows.Anextrafingercanbeincrediblyhandy.Peoplebornwithsixfingersperhandcantietheirshoes,flexiblymanagephonesandplayacomplicatedvideogame—allwithasinglehand.What’smore,theirbrainshadnotroublecontrollingthemorecomplexmovementsoftheirextrafingers,thenewstudyfinds.Itsresultsalsohighlighthowflexiblethehumanbraincanbe.Thatinformationcanguidepeoplewhodesignbraincontrolledrobots.Researchersworkedwitha52-year-oldwomanandher17-year-oldson,bothofwhomwerebornwithsixfingersoneachhand.Theirextrafingersgrewbetweenthethumbandindexfinger.Andtheyresemblethumbsinhowtheycanmove.Theresearchersstudiedthesubjects’handswithMRI(核磁共振成像),whichcanmapbodystructures.Theyalsolookedatactivityinthepartsofthebrainthatcontrolthehands.Thosescansshowedadedicatedbrainsystemthatcontrolstheextrafingers.Thesixthfingershadtheirownmusclesandtendons(肌腱).Thatmeanstheydon’tjustdependonthemusclesthatmovetheotherfingers,assomedoctorshadthought.Thebrainhadnotroubledirectingtheextrafingers,theresearchersshowed.Itsuggestssomeone’smindwouldbeabletocontrolroboticfingersorlimbs.However,itmightbeharderforapersonnotbornwithextrafingers.Livinginaworlddesignedforpeoplewithfivefingershasledthemomandsontoadaptininterestingways.Forinstance,eatingtoolsaretoosimpleforthem,sotheyconstantlychangethepostureontheeatingtoolsandusetheminadifferentway.Still,noteveryonewithextrafingersmayshowimprovedflexibility.Insomecases,extrafingersmaybelesswelldeveloped.12．Whatdoesthenewresearchfindaboutextrafingers?A．Theyarealwaysuseless. B．Theyareveryuncommon.C．Theyareusuallynecessary. D．Theyaresometimesbeneficial.13．Whatcanweinferaboutextrafingersfromthetext?A．Extrafingers’musclesandtendonsarestronger.B．Extrafingersaremoreflexiblethannormalones.C．Theextranubsremovedatbirthareactuallyhelpful.D．Brain-controlledRobotscanbedesignedtohaveextrafingers.14．Whatcanweknowfromthelastparagraph?A．Themomandsonliveaninterestinglife.B．Somepeopleenjoythelifewithextrafingers.C．Eatingtoolsarequitesimpleforpeoplewithextrafingers.D．Somepeoplewithextrafingersarenotmoreflexiblethanordinarypeople.15．Whatcanbethebesttitleforthetext?A．SixthFingerCanImproveAbilityB．SixthFingerCanProveExtraHandyC．SixthFingerShouldBeTreatedProperlyD．SixthFingerShouldDevelopinManyWays8.（2020屆寧夏石嘴山市高三二模）Boomerangchildrenwhoreturntolivewiththeirparentsafteruniversitycanbegoodforfamilies,leadingtocloser,moresupportiverelationshipsandincreasedcontactbetweenthegenerations,astudyhasfound.Thefindingscontradictresearchpublishedearlierthisyearshowingthatreturningadultchildrentriggerasignificantdeclineintheirparents’qualityoflifeandwellbeing.Theyoungadultstakingpartinthestudywere“morepositivethanmighthavebeenexpected”aboutmovingbackhome–theshameisreducedassomanyoftheirpeersareinthesameposition,andtheyacknowledgedthebenefitsoftheirparents’financialandemotionalsupport.Daughterswerehappierthansons,oftenslippingbackeasilyintoteenagepatternsofbehaviour,thestudyfound.Parentsonthewholeweremoreuncertain,expressingconcernaboutthelikelydurationofthearrangementandhowtomanageit.Buttheyacknowledgedthatthingsweredifferentforgraduatestoday,wholeaveuniversitywithhugedebtsandfewerjobopportunities.Thefamiliesfeaturedinthestudyweremiddle-classandtendedtoviewtheachievementofadultindependencefortheirchildrenasa“familyproject”.Parentsacceptedthattheirchildrenrequiredsupportasuniversitystudentsandthenasgraduatesreturninghome,astheytriedtofindjobspayingenoughtoenablethemtomoveoutandgetonthehousingladder.“However,”thestudysays,“day-to-daytensionsabouttheprospectsofachievingdifferentdimensionsofindependence,whichinafewextremecasescameclosetoconflict,characterisedtheexperienceofamajorityofparentsandalittleoverhalfthegraduates”.Areasofdisagreementincludedchores,moneyandsociallife.Whileparentswerekeentohelp,theyalsowanteddifferentrelationshipsfromthosetheyhadwiththeirownparents,andcontinuingtosupporttheiradultchildrenallowedthemtoremainclose.28．Whatisthefindingofthepreviousresearch?A．Boomerangchildrenmadetheirparentshappier.B．Theparentswerelookingforwardtotheirchildren’sreturn.C．Theparents’qualityoflifebecameworsethanbefore.D．Boomerangchildrenneverdidanyhousework.29．Theunderlinedword“trigger”inParagraph2maybebestreplacedby_____.A．causeB．defeatC．ariseD．allow30．Whatistheattitudeofthecollegegraduatestowardsreturninghome?A．Theyareashamedofturningtotheirparentsforhelp.B．Theyaregladthattheycouldcomeback.C．Theyaredoubtfulaboutwhethertheyshouldreturn.D．Theyareproudtobeindependentfromthefamily.31．Whatcanbeinferredasthereasonforthe“boomerangchildren”phenomenon?A．Thechildrenwanttokeepinclosertouchwiththeirparents.B．Theparentsarewillingtoprovidesupporttotheirchildren.C．Itisharderforthechildrentosecureasatisfyingjob.D．Thereismorehouseworkneededtobedonebythechildren.9.（2020屆寧夏石嘴山市高三二模）Beforeyouthrowyourtrashintothenearestcan,thinkforamoment.Notallyourgarbagecanbedumpedintoonetrashcan.Itneedstobesortedoutwithdifferentthingsgoingintodifferentbins.Wasteclassification,apracticethathaslongbeennormalindevelopedcountrieslikeJapan,isthenewchallengeformanyChineseurbanresidents.However,thoughinitiallyyoumightneedtorackyourbrainstofigureoutwhichtrashgoesintowhichcan,inthelongrun,theresultiswellworththeeffort.Landfills,siteswherewasteisburiedandcoveredoverwithsoil,areamajormethodofdisposingofresidentialwasteinChina.However,consideringtheenvironmentaldisasterassociatedwithburyingwaste,thereisapressingneedtoreducetheamountofwastethatgoesintoalandfill.Classification,sortingwasteintodifferentcategoriessuchasharmfulwaste,recyclablesandkitchenwaste,isakeysolution.Currently,46citiesacrossChina,arecarryingoutaprogramthataimstoputinplaceaclassification-basedgarbagedisposalsystembytheendof2020.Itishopedthatthiswillreducethequantityofwastethatendsupinlandfillsbyalargedegree.ShanghaicameintothemediafocusinearlyJulyafteritcarriedoutcompulsorygarbagesortingrulesthatthosewhofailtodisposeofgarbageproperlyshouldbefined.BeijingisreviewingitsregulationstofollowinShanghai'sfootsteps.Thenewrulesmaycauseshort-terminconveniencebuttheyaremeanttohelpresidentsfollowtheconceptofgarbageclassificationforthecommongood.Astheprogramsshow,residentscangraduallydevelopthishabitwiththeirgrowingawarenessandthehelpofadvancedtechnology.Infuture,thispracticeshouldbeadoptedacrossChina,inurbancitiesandruralareasalike.Withpublicinvolvement,China'sgarbagesortingprogramwillcontributenotonlytothenation'ssustainable(可持續(xù)的)developmentbutalsotomakingtheplanetabetterplacetolivein.32．Whatisthemostprobablereasonforclassifyingwaste?A．Nositeforburyingwaste. B．People'shabit.C．Economiccost. D．Environmentalpollution.33．Whatisthepurposeoftheprogram?A．Topractisewasteclassification.B．Toprotectenvironment.C．Tosaveoilforfarming.D．Toreducethequantityofwaste.34．Whatcanbeasuitabletitleforthetext?A．AprogramadoptedacrossChina.B．Shanghaicarriedoutnewdisposalrules.C．Doingthebestwithwaste.D．Protectingenvironmentisnecessary.35．WhatislikelytohappeninChinaaccordingtothetext?A．Chinawillbecometheleadingcountryoftheprogram.B．Theprogramwillbespreadnationwide.C．Developmentinruralareaswillmakegreatprogress.D．Peoplewillhelpd