北京海淀北方交大附中2025届高考英语四模试卷含解析

北京海淀北方交大附中2025届高考英语四模试卷注意事项:1．答题前，考生先将自己的姓名、准考证号码填写清楚，将条形码准确粘贴在条形码区域内。2．答题时请按要求用笔。3．请按照题号顺序在答题卡各题目的答题区域内作答，超出答题区域书写的答案无效；在草稿纸、试卷上答题无效。4．作图可先使用铅笔画出，确定后必须用黑色字迹的签字笔描黑。5．保持卡面清洁，不要折暴、不要弄破、弄皱，不准使用涂改液、修正带、刮纸刀。第一部分（共20小题，每小题1.5分，满分30分）1．________bloodifyoucanandmanyliveswillbesaved.A．Giving B．GivenC．Togive D．Give2．_______manyChineseholidaysaredirectedtowardsservicesrememberingancestors,theChingMingFestivalisbeyonddoubtthelargest.A．Unless B．SinceC．Once D．While3．---Let'swalktothatvillagetogether.---__________.Howcanwetwogirlsdothatinthedark？A．Iagreewithyou. B．That'sagoodpoint.C．Youmustbejoking！ D．That'snotyouropinion！4．Theguidanceteacherwastheiradviser,offeringthemsuggestionsandsolutionswhenthey______difficulties.A．aroseB．encounteredC．emergedD．evaluated5．IbrokemyrelationshipwithPeterbecausehealwaysfound_______withme.A．errorB．failureC．mistakeD．fault6．—Peopleshouldstopusingtheircarsandstartusingpublictransport.—________.Theroadsaretoocrowdedasitis.A．Allright B．ExactlyC．Goahead D．Fine7．MoreexpresswaysinSichuansoontopromotethelocaleconomy.A．arebeingbuilt B．willbebuiltC．havebeenbuilt D．hadbeenbuilt8．—Nancy,whatclassesareyoutakingthisterm?—_____IwanttotaketwoEnglishcourses,ormaybeSpanish.A．What’sup?B．It’snoneofyourbusiness.C．I’venoidea. D．I’mnotsureyet.9．—I'msorry.Ishouldn'thavebeensorudetoyou.—You________somethingnotverynicetome,butthat'sOK.A．havesaidB．hadsaidC．weresayingD．didsay10．—Iwillbeavicepresidentinayearortwo.—Youcan’tbeserious!_______.A．Ican’tmakeitB．Ican’thelpitC．Iwon’ttellasoulD．Iwouldn’tbetonit11．Mysister______thebabywhileI’matyoga.A．arrangesB．mindsC．assesses12．Obviously,agoodhabithelpustospeeduptoreachourdestinations.A．need B．must C．can D．shall13．---Sorrytohavebrokenyourglass.---_____________.Youdidn’tmeanto,didyou?A．NoproblemB．ForgetitC．AllrightD．Don’tsayso14．Theinfrastructureofacountryis________makeseverythingrunwell,includingthingsliketransport,irrigation,electricityandschools.A．whichB．thatC．whereD．what15．Youneverreallyunderstandaperson________youconsiderthingsfromhispointofview.A．if B．onceC．as D．until16．_____isoftenthecase,wehaveworkedouttheproductionplan.A．WhichB．WhenC．WhatD．As17．—HowIwishIhadworkedharderwhenIwasinthatcompany.—Ifyouhad,you_________adepartmentmanagernow.A．are B．wouldbeC．wouldhavebeen D．were18．Workinghardisnota__________ofgreatsuccess,butitisamongtheessentialrequirements.A．sign B．signalC．guarantee D．mark19．Ishookhandsand________greetingswiththemanager,whoIimpressedalot.A．conveyedB．swappedC．exchangedD．switched20．—WillUnclePetersoncometomybirthdaypartytomorrow?—Pityhe______toZimbabweasavolunteerteacher.A．wassentB．hasbeensentC．hadbeensentD．wouldbesent第二部分阅读理解（满分40分）阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。21．（6分）Iwaspuzzled!Whywasthisoldwomanmakingsuchafussaboutanoldcopse（树丛）whichwasofnousetoanybody?Shehadwrittenletterstothelocalpaper,eventoanational,protestingaboutaprojectedby-passtohervillage,and,lookingatamap,theroutewasnowherenearwhereshelivedanditwasn’tasiftheareawasattractive.Iwasmorethanpuzzled,Iwascurious.Theenquiryintotherouteofthenewby-passtothevillagewasduetotakeplaceshortly,andIwantedtoknowwhatitwasthatmotivatedher.SoitwasthatIfoundmyselfknockingonacottagedoor,beingreceivedbyMarySmithandthenbeingtakenforawalktothewoods.“I’vealwayslovedthisplace,”shesaid,“ithasalotofmemoriesforme,andforothers.Weallusedit.Theycalledit‘Loverslane’.It’snotmuchofalane,anditdoesn’tgoanywhereimportant,butthat’swhyweallcamehere.Tobeawayfrompeople,tobebyourselves.”sheadded.Itwasindeedpleasantthatdayandthesongsofmanybirdscouldbeheard.Squirrelswatchedfromthebranches,quiteboldintheirmovements,obviouslyfewpeoplepassedthiswayandtheyhadnothingtofear.Icouldimaginethenoiseofvehiclespassingthroughthesepeacefulwoodswhentheby-passwasbuilt,soIfeltthatsheprobablyhadsomethingtherebutasIholdstrongopinionsabouttheneedsofthecommunityover-ridingtheopinionsofprivateindividuals,Isaidnothing.Thevillagewasquiteadangerousplacebecauseofthetrafficespeciallyforoldpeopleandchildren,theirsafetywasmoreimportanttomethananoldwoman’sstrangeideas.“Takethistree,”shesaidpausingafterashortwhile.“Toyouitisjustthat,atree.Notunlikemanyothershere.”Shegentlytouchedthebark,“Lookhere,underthisbranch,whatcanyousee?”“Itlooksasifsomeonehasdoneabitofcarvingwithaknife.”Isaidafteracursoryinspection.“Yes,that’swhatitis!”shesaidsoftly.Shewenton,“Hehadapenknifewithaspikeforgettingstonesfromahorse’shoof,andIhelpedhimtocarvethem.Wewereverymuchinlove,buthewasgoingaway,andcouldnottellmewhathewasinvolvedinthearmy.Ihadguessedofcourse.Itwasthelasteveningweeverspenttogether,becausehewentawaythenextday,backtohisUnit.”MarySmithwasquietforawhile,thenshesobbed.“Hismothershowedmethetelegram.‘SergeantRHolmes...KilledinactionintheinvasionofFrance.’…”“IhadhopedthatyouandRobinwouldonedaygetmarried.”shesaid,“Hewasmyonlychild,andIwouldhavelovedtobeaGranny,theywouldhavebeensuchlovelybabies’—shewaslikethat!”“Twoyearslatershetoowasdead.Pncumonia（肺炎）,followingachilionthechest’waswhatthedoctorsaid,butIthinkitwasanoldfashionedbrokenheart.Achildwouldhavehelpedbothofus.”Therewasafurtherpause.MarySmithgentlycaressedthewoundedtree,justasshewouldhavecaressedhim.“Andnowtheywanttotakeourtreeawayfromme.”Anotherquietsob,thensheturnedtome.“Iwasyoungandprettythen,Icouldhavehadanybody,Iwasn’talwaystheoldwomanyouseeherenow.IhadeverythingIwantedinlife,alovelyman,healthandafuturetolookforwardto.”Shepausedagainandlookedaround.Thebreezegentlymovedthroughtheleaveswithasighingsound.“Therewereothers,ofcourse,butnoonecanmatchmyRobin!”shesaidstrongly.“AndnowIhavenothing—exceptthememoriesthistreeholds.IfonlyIcouldgetmyhandsonthatawfulmanwhowritesinthepaperaboutthevalueoftheroadtheyaregoingtobuildwherewearestandingnow,Iwouldtellhim.Hasheneverloved,hasheneverlived,doeshenotknowanythingaboutmemories?Wewerenottheonlyones,youknow,IstillmeetsomewhocamehereasRobinandIdid.Yes,Iwouldtellhim!”Iturnedaway,sickatheart.1、Themainpurposeofthispassageisto________.A．drawattentiontothedamagethatwarscauseB．persuadepeopletogiveupprivatememoryC．arousetheawarenessofbeingenvironmentallyfriendlyD．introduceatouchingbutsadlovestory2、WhichofthefollowingwordscanbestdescribeMarySmith?A．Selfish. B．Faithful.C．Changeable. D．Stubborn.3、Theunderlinedsentence“Ifeltthatsheprobablyhadsomethingthere”means________.A．IthoughttheremightbesomethinghiddeninthewoodsbyMarySmithB．IguessedtheremightbeastoryrelatedwithMarySmithC．IthoughttheremightbesomereasonforMarySmith’sprotestD．IguessedtheremightbeasecretpurposeofMarySmith4、Whatwasprobablythecarvingonthewoundedtree?A．ThedatewhenRobinHolmeswouldleaveforarmy.B．Theirwishthatthisplaceandtreewouldlastlong.C．Theirnamesandaheartwithasignofarrowthroughit.D．Theirprotestagainstthewarwhichtorethemapart.5、InMary’sopinion,whichofthefollowingmighthavecausedRobin’smother’sdeath?A．Pneumonia. B．Achillonthechest.C．Aheartattack. D．Severesorrow.6、MarySmithprotestedaboutaprojectedby-passtohervillage,mostprobablybecauseof________.A．herromancestorywithRobinB．herdecisiontoprotecttheenvironmentC．hersadnessforRobin’smotherD．herdreamofhavingabigfamily22．（8分）Mostpeoplemaythinkthatpeoplewhowritecomputercodemustbegoodatmathandlogicalthinking.However,peoplewhowritecomputercodesaythatcreativityisalsoanimportantqualityforcoding.SoftwaredevelopersintheAmericanstateofCaliforniahavecreatedagamecalledOsmoCodingJam.Thegameisdesignedtohelpchildrenusethecreativesideoftheirmindsastheylearntocode.ChildrencanplaythegameoniPads.Therearemanyactivitiestheycandobythegame.TanyaDodgeisthemotheroftwochildren,nine-year-oldDylanandhis11-year-oldsisterMeghan,whoplaythegame.Accordingtoher,theseactivitiesgivethemimportantskillsforthefuture.“It’sananalyticalskillthatthekidsaregoingtoneedtohaveastheygrowuptoday”saidDodge.ButthedevelopersofOsmoCodingJambelievewritingcodeshouldbemorethanjustananalyticalskill.“WewanttoexplorethecreativesideofcodingthatIthinkisoftennotasexplored,”saidFelixHu,anOsmoengineer.Huadded,“Thecoolestpartisthatwe’reteachingkidshowtobecreativewithcodeandthat’sareallyimportantthingthatkidsshouldgetcomfortablewithbecausecodingiscreative.”Hualsoseesagrowingnumberofparentswhofeelthatsoftwarecodeisasecondlanguagethatchildrenneedtolearntosucceedinfuturejobs.TanyaDodge,themotherofDylanandMeghan,consents.Shesaid,“Ithinkyou’regoingtohavetounderstandatsomepointtheideaofcodingwillworkwellinthefuture.”Hualsoexplainedthatveryoftenkidsgrowupnotunderstandinghowacomputerworksorjustthinkingthatit’slikeamagicalmachine.Hesaidbybreakingitdowntoalowerlevel,kidscanunderstandthatthecomputerisn’tassmartastheythinkitis.1、OsmoCodingJamisdesignedfor________.A．trainingkids’logicalthinkingB．helpingkidslearntocodefastC．helpingchildrenlearnmathwellD．helpingkidsbecomemorecreative2、WhatdoesTanyaDodgethinkofOsmoCodingJam?A．Itneedstobeimproved.B．Itishighlyaddictiveforkids.C．Itisofgreathelptotoday’skids.D．Itisimperfectintrainingkids’analyticalskill.3、WhichofthefollowingstatementsisTrueaccordingtothetext?A．TanyaDodgeagreesthatcodingisgoodforchildrentosucceedinfuturejobs.B．Manyparentsdoubtswhethercodingwillhelpchildrenworkwellinthefuture.C．Creativityisnotsoimportantaslogicalthinkingforcoding.D．TanyaDodgehastwogirls,whoplaythegame,OsmoCodingJam.4、Whatcanweknowaboutkids’learningcodingfromthelastparagraph?A．Itmakesthemmuchmoreconfidentandcreative.B．Itmakesthemlikeusingcomputersmore.C．Ithelpsthemknowbetteraboutcomputers.D．Ithelpsthemknowbetteraboutthemselves.5、What’stheauthor’spurposeinwritingthepassage?A．Totellhowtolearntocodewell.B．Totellaboutanewgameforkids.C．Toencouragekidstolearntocode.D．Toshowtheimportanceofcreativity.23．（8分）MywifeandIownedtwodogethatwehadownedbeforewemetandbroughtintothemarriage.Herdogwasapitbull(斗牛犬)namedZack,andhehatedme.Whenourdaughterwasborn,Iwasworriedthatthefamilypitbullwouldbedangeroustohavearoundouryoungdaughter.Iwarnedmywifethatthedogwouldhavetogoatthefirstsignoftrouble.Isaid,“Ifhenips(啃咬)atthebaby,he’sgone.”Webroughtourdaughterhomeinacarseat,andbothdogssniffed(嗅）andlickedher,tailswagging.IhadtopullZackawayfromherbecausehewouldn’tstoplickingher.Zackimmediatelybecamemydaughter'sprotector,andwhenshewaslyingonablanketonthefloor,healwayshadonefootontheblanket.Zacklovedmydaughterextremely,andwhenshebecamealittleolderalwayswalkedhertobed,andthensleptonthebedwithher.Hesomehowknewwheneveritwastimetogoupstairs,andhewouldwaitatthebottomofthestairsforher,andthenfollowheruptobed.Zackwaspoisonedbysomeneighborkids,andwehadoneoftheworstdaysofourlives.Watchingmydaughtersaygoodbyetohimashelaystillonthekitchenfloor,mywifeandIwerebothsobbing.At8:00thatnight,mydaughterwalkedtothestairstogotobed.Atthatmoment,allthreeofusrealizedwhatwasabouttohappen.Mydaughterlookedathermotherandmewithalookofhorrorandpanic.

Itwasatthatmomentthatmydog,Samwholovedmydaughterdearly,stoodup,walkedovertoher,andnudgedherwithhishead.Heputhisfootonthestairs,andlookedupather.Theywalkeduptobed,withmydaughterholdinghisnecktightly.Forthenextsixyears,untilhedied,Samwaitedforherbythestairseachnight.1、WhydidtheauthorpullZackawayfromhisdaughter?A．BecauseZackkeptlickinghisdaughter.B．BecauseZackhatedhisdaughter.C．Becausehisdaughterwassensitivetodogs.D．Becausehisdaughterwasafraidofdogs.2、AfterthedeathofthedogZack,thedaughter_______.A．feltveryhorrifiedandsadB．wantedtobuyanotherdogC．askedherparentstosleepwithherD．askedtostaywiththeotherdog3、Theunderlinedword“nudged”inParagraph5canbereplacedby“_______”A．liftedB．lickedC．pushedD．pulled4、Whatisthemainideaofthepassage?A．Dogscanbeman’sbestfriendB．It’sanaturalthingthatchildrenlikedogsC．ParentsshouldprotecttheirchildrenfromdogsD．Dogssometimesmaycausetroublefortheirowners.24．（8分）Thereisalotoftalkabout“brainpower.”Youdon’tusuallyhearaboutstomachpower.Asitturnsout,thestomachmightalsobeverypowerfulwithanewelectronicpillinsideit.Thenewelectronicpill,equippedwithaWi-Fitransmitter,isswallowedandcanharvestenergyfrominsideaperson’sownstomachtorecordcore（核心）bodytemperatureandthensendthehealthdatatoanoutsidemonitor.Themodelcanpoweritselffornearlyaweek—muchlongerthancurrentabsorbabledevices,whichareplacedinsidethebodyandonlycansharehealthinformationforlessthananhour.“Tomakethedeviceworkevenlonger,andseeifthestomach’sacidcouldpowerthedevice,weusedtinypiecesofcopperandzincforexperiments.”saidPhilipNadeau,anelectricalengineerwhodesignedthedevicetogether.TheWi-Fidevicesfitinsideacapsulebutunfoldwhentheyhitthestomachanddeliverdrugsforlongperiodsoftimebeforetheybreakdownandpassthroughthebody.ThisWi-Fipillcouldleadtofreshopportunitiesfordrugdeliveryorreal-timehealthmonitoringfrominsideorgans,saidGiovanniTraverso,adoctorandbiomedicalengineeratBrighamandWomen’sHospitalinBoston,whoc0-ledastudyofthepillpublishedrecentlyinNatureBiomedicalEngineering.Despiteourmanymedicaladvances,we’reprettybadatmeasuringcorebodytemperature.Arecentstudyof8,600patientsfoundthatthermometer（温度计）readingsfromthemouthorskindidalousyjobofmeasuringcoretemperature.Gettinganaccuratetemperatureisimportant.TraversoandNadeauarealsoaimingtoshrink（缩小）thepilltothesizeofatablet.“Temperaturetrackingisjustthefirstofmanywaysthemedicalcommunitycanusethedevice.”Traversethinks.1、WhatisWRONGabouttheWi-Fipill?A．TheWi-Fideviceispoweredbyitself.B．Thepillcansendhealthdatatothedoctor.C．Nadeauisthefirstonetodesignthepill.D．Thepillcanhelpmonitorpatients’health.2、Whatdoestheunderlinedword“lousy”inParagraph4probablymean?A．Accurate.B．Unimportant.C．Terrible.D．Traditional.3、WhatistheTraverso’sattitudetothefutureoftheWi-Fipill?A．Pessimistic.B．Unconcerned.C．Worried.D．Optimistic.4、Whatcanweinferfromthelastparagraph?A．TheWi-Fipillistoobigforthepatientstoswallow.B．Thepillmayhelpthosewithotherdiseasesinthefuture.C．BodytemperatureistheonlyoneusefortheWi-Fipill.D．Thepillhasbeenusedinmanywaysinmedicalfield.25．（10分）Google’snewartificialintelligencecandefeatbothhumansandotherAIs.Fortunately,theonlywarzonewhereitfightsandwinsistheancientboardgameGo(围棋).AlphaGoZero,developedbyGoogle—ownedDeepMind,isthelatestAIprogram.TheoriginalAlphaGodefeatedGomasterLeeSedollastyear,andAlphagoMaster,anupdatedversion,wentontowin60gamesagainsttophumanplayers.What’sdifferentaboutAlphaGoZeroisthatitbecamepotentiallytheworld’sbestGoplayerwithanyhelpfromhumans.TheprogramAlphaGoZerostartedoffknowingonlythebasicrulesandthenplayedmillionsofgamesagainstitselfinjustafewdays.Afteralmostfivemilliongamesplayedagainstitself,AlphaGoZerocouldoutplayhumansandtheoriginalAlphaGo.After40days,itwascapableofbeatingAlphaGoMaster.Theprogramlearnedthestrategieshumansaccumulatedoverthousandsofyearsinamatterofweeksandalsodevelopednontraditionalstrategiesandmovesthatbeatthetechniquesofthehumanmasters,leavingthemastonished.“Ateachstageofthegame,itseemstogainabithereandloseabitthere,butsomehowitendsupslightlyahead,asifbymagic,”saidAndrewJacksonoftheAmericanGoAssociationDeepMindsaysithasplansforthetechnologybehindAlphaGoZerobeyondjustdefeatingalloveranancientgameboard.“Intheend,wewanttoapplythesebreakthroughstohelpingsolveallsortsofpressingrealworldproblemslikedesigningnewmaterials,”saidDemisHassabis,co-founderandCEOofDeepMind,inastatement.realworldThatsoundsgreat,butjustasaprecaution,let’staketheadviceofElonMuskandStephenHawkingandkeepanysuper—fastlearningAIawayfromthenuclearlaunchcodesfornow.1、WhichwasprobablytheearliestAlprogramtoplayGoaccordingtothetext’?A．DeepMind.B．AlphaGoZero.C．AlphaGoMaster.D．AlphaGo.2、WhatmakesAlphaGoZerodifferentfromitsotherversions?A．ItbeatsAlphaGoMaster.B．Itteachesitself.C．ItknowsthebasicrulesofGo.D．Itplaysagainstitselfforalongtime.3、What’sDeepMind’splanfortheAItechnology?A．Todesignanewversion.B．Towinalltheancientboardgames.C．Toinspiretheworldwithsolutionstoglobalissues.D．Tobeathumanbeingsallovertheworld.4、HowdoestheauthorfeelaboutAI?A．Cautious.B．Supportive.C．Negative.D．Encouraging.第三部分语言知识运用（共两节）第一节（每小题1.5分，满分30分）阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项．26．（30分）Earlythismorning,IgotuptomakeabatchofRiceKrispietreats（大米花糖）formyneighboracrossthehall.She1greetsmewhenweseeeachother,andherlittleboy,who’snow4,won’ttalktomeeither.LastMonday,shecalledthefirefighterswhenapanI’dforgottenonthestovecausedmyflatto2Ihadgoneforawalk,butwhenIcamehomethestreetinfrontofourapartmentwas3byapolicecar,afiretruckandanambulance!4Isawthem,Irememberedthepan!Ifeltsafeknowingthat5wedon’tgetalong,myneighborhaddonetherightthinganddidn’tblameme.Hence,theRiceKrispietreats.LastChristmas,myneighborrevealedthatshehadbeenalittleangryaboutmebecauseofa(n)__26___fouryearsago.IhadapologizedandaskediftherewasanythingIcoulddoto___27___ourrelationship,butshewouldnotacceptmy6Herdirectrefusalreally7me.Afterthat,IdecidedI’djustleaveherbe—arelationship8twotowork.So,yousee,Iwasreallyscaredshewasgoingtorefusemyofferagain,9mestandingonher10holdingmyplateoftreats.Then,IremindedmyselfofhowgoodIhadfeltthedaybeforewhenI’ddonesomerandomactsof___33___aftertellingmyself:“Feelthefear,anddoit11AfterplacingtheRiceKrispietreatsonabeautifulplate,Iopenedmyapartmentdoorandmetherinthehallway.Isaid：“Ijustwantedtotellyouhow12IamthatyouwerepayingattentiononMonday.”Iheldtheplate13her,explainingthesewereverysweetAmericantreatsandthatshe14trytoseewhethersheandherfamilylikedthem.Shetooktheplateandwetalkedabitabout15she’dbecomeawareofthesmokeinmyflatbeforepartingways.BackathomeI16.1、A．warmlyB．occasionallyC．barelyD．frequently2、A．goupB．smokeupC．burnupD．tearup3、A．filledB．surroundedC．blockedD．taken4、A．TheinstantB．ForaminuteC．ThatmomentD．Atthattime5、A．asthoughB．incaseC．nowthatD．eventhough6、A．affairB．incidentC．deedD．event7、A．improveB．buildC．reuniteD．establish8、A．adviceB．suggestionC．apologyD．request9、A．shockedB．saddenedC．amusedD．amazed10、A．takesB．costsC．coversD．makes11、A．havingB．leavingC．keepingD．remaining12、A．homeB．hallC．apartmentD．doorstep13、A．kindnessB．happinessC．politenessD．willingness14、A．somewayB．anywayC．somehowD．somewhat15、A．kindB．safeC．happyD．grateful16、A．atB．onC．towardsD．over17、A．couldB．mustC．wouldD．need18、A．whenB．whatC．howD．where19、A．performedB．learnedC．didD．played20、A．receiveB．respondC．reflectD．realize第二节（每小题1.5分，满分15分）阅读下面材料，在空白处填入1个适当的单词或括号内单词的正确形式。27．（15分）Haveyoueverdreamedofbeingfamous1．amusician?Atfirstmanysingersmayformabandtopractisetheirmusic.Andthentheymaygetthechancetogive2．(perform)inpubsorclubs.Latertheymaygraduallybecomepopular.3．,theMonkeesstartedinadifferentway.TheybeganasaTVshow.TheTVorganizershadputanadvertisementinanewspaper.4．(look)forrockmusicianswhocouldactaswellassing.5．(honest)speaking,onlyoneofthemwasgoodenoughandtheotherthreememberspretended6．(sing).Soitcouldn’t7．(call)arealbandatthebeginning.Anyhow,theirshowswere8．(humour)andtheybecamepopular.Afterayearorso,theyworkedharderandproduced9．ownrecordsandstartedtouring.About1970,theMonkeesbrokeupbuttheyreunitedinthemid-1990sandin1996producedanewrecord,10．theycelebratedtheirformerhappytimewith.第四部分写作（共两节）第一节短文