2025屆陜西省漢中市高三下學(xué)期一模考試英語試題含解析

2025屆陜西省漢中市高三下學(xué)期一?？荚囉⒄Z試題考生須知：1．全卷分選擇題和非選擇題兩部分，全部在答題紙上作答。選擇題必須用2B鉛筆填涂；非選擇題的答案必須用黑色字跡的鋼筆或答字筆寫在“答題紙”相應(yīng)位置上。2．請用黑色字跡的鋼筆或答字筆在“答題紙”上先填寫姓名和準(zhǔn)考證號(hào)。3．保持卡面清潔，不要折疊，不要弄破、弄皺，在草稿紙、試題卷上答題無效。第一部分（共20小題，每小題1.5分，滿分30分）1．InthevirtuallaboratoryenvironmentcreatedintheVRapp,studentscan________aparticularexperimentbeforedoingtheminareallab.A．revealB．reserveC．previewD．provide2．Scientistshaveintroducedanewmodelof3Dprinter,______differsfromtheexistingonesincertainaspects.A．a(chǎn)s B．which C．who D．that3．---Canthose___________atthebackoftheclassroomhearme?---Noproblem.A．seat B．sitC．seated D．sat4．—Let’sgotothecinemathisSundaymorning.—I’dloveto，butI________asavolunteerinmycommunitythen.A．willwork B．haveworkedC．willbeworking D．wasworking5．Aseconomyisdeclining,jobs________totheyoung,continuetobescarce.A．a(chǎn)vailableB．convenientC．comfortableD．valuable6．—I’mafraidIcouldn’tgotoyourbirthdayparty.IhaveatestnextMonday.—Oh，！You’remybestfriendandyoumustbethere！A．goahead B．comeon C．youneedn’t D．itdoesn’tmatter7．—Youshouldhavehelpedyourmomwashthedishes．—Imeant．Butsheisalwaystellingmetostudy．A．todo B．to C．doingso D．doing8．IntermsofMrs.Meng’sbeingarrestedwithoutsolidevidence,thewesternmediahas_____publicattentionawayfromwhereitshouldbe,thatis,theruleoflaw.A．transformedB．shiftedC．a(chǎn)ttractedD．changed9．Thereareno______proposalstoreducetheroadaccidents.Wearestillseekinginspiration.A．contradictoryB．concreteC．confidentialD．controversial10．______tosuccesscan’tdefeatus.Instead,theycanonlymakeusstronger.A．Attempts B．BarriersC．Contributions D．Access11．Takingonlinereadingintoconsideration,wecanchallengetheassumption____readingforpleasurecontinuestodecrease.A．whether B．that C．where D．when12．Hedoesn'tspendanymoremoneyonclothingthanIdo,but________hemanagestolooksostylish.A．therefore B．somehowC．furthermore D．otherwise13．TheeducationsysteminChinaisverydifferentfrom________intheUSA．A．oneB．itC．thoseD．that14．Aftersevenhours’drive,theyreached______theythoughtwastheplacetheyhadbeendreamingof.A．that B．whatC．where D．which15．ThoughwintersinBritainarecoldandthereisusuallysnow,thereare________placesforskiing.A．some B．many C．few D．a(chǎn)few16．Theguidewasenthusiasticandknowledgeableandwespentalovelyeveningwanderingintoplaceswhichwe________straightpastotherwise.A．hadwalked B．werewalkingC．wouldhavewalked D．musthavewalked17．Intimewereachedastagewehadmoreyoungreadersthanoldones． A．where B．how C．who D．what18．—Ourteamhasjustnarrowlywonthegame.Ifeelsorelievednow.—__________!A．Cheerup B．YoubetC．Whatapity D．Welldone19．—Mum,Idon’tthinkIamqualifiedenoughtodothis．—Honey,beconfident!Youshouldknowitis_____amanthinksofhimself…reallydetermineshisfate．A．that;thatB．how;thatC．what;thatD．that;how20．Youcanusethisroomforyourclubactivitiestomorrow______youkeepittidyandclean.A．forfearthat B．incaseC．onconditionthat D．evenif第二部分閱讀理解（滿分40分）閱讀下列短文，從每題所給的A、B、C、D四個(gè)選項(xiàng)中，選出最佳選項(xiàng)。21．（6分）Discovery’sastronautsarrivedtoanexcitingcelebrationWednesdayasnearly700peoplecrowdedanairplanestorageplace,wavingflagsandholdingsignsthatread:“WelcomeHome,Astronauts!”Theseven-personteamreturnedtoEarthonTuesdayafterbeingthefirsttotakeaspaceshuttleintoorbitsincetheColumbiadisaster(災(zāi)難)of2003.“Inthelasttwoandahalfyears,wehavebeenthroughtheveryworstthatmannedspaceflightcanbringus,andoverthepasttwoweekswehaveseentheverybest,”NASAAdministratorMichaelGriffintoldtheastronautsandtheirfamiliesandfansWednesday.ThecrowdwavedAmericanflagsfortheU.S.astronautsandJapaneseflagsforcrewmemberSoichiNoguchi,oneofthespacewalkers.“Asarookie（新手）astronaut,Icouldnotaskformore,”Noguchisaid,“Wehadthreespacewalks,twoextradaysinspaceandonegreatteam.”Whilethehomecominghasbeenfilledwithexcitementforwhatmissioncontrollersdeclareda“trulyspectaculartestflight”,uncertaintyremainsforthefutureoftheshuttleprogram.ShortlyafterDiscoveryroseupintospaceJuly26,anearly1-poundlargepieceoffoaminsulation（泡沫絕緣材料）fellfromthefueltank—theverythingthatwassupposedtohavebeenfixedafterColumbiaexploded.ThefoammissedDiscovery,butNASAgroundedallshuttleflightsuntilengineersfixtheproblem.NASAgroundcrewsexaminedDiscoveryafteritsreturnfromorbitandfounditingoodcondition,anofficialsaidWednesdayatNASA’sDrydenFlightResearchCenteratEdwardsAirForceBaseinCalifornia.Technicianscounted101dingsanddivots,including20thatwerelargerthan1inch.SchaafDean,landingsupportgroupchief,saidthenumbersweresimilartotheresultsofothershuttle,post-landingexaminations.Abeginningexaminationoftheshuttle’sthermal（熱的）blanketshoweditremainedundamagedduringre-en-tryintotheEarth’sair.(Agencies)1、Thesevenastronauts________.A．a(chǎn)rethefirsttotakeaspaceshuttleintoorbitB．tooktheColumbiaintospaceC．returnedtoearthsafelyD．a(chǎn)reAmericans2、Accordingtothetext,theNASAofficialsthink________.A．theflightofDiscoveryisafailureB．mannedspaceflighthasbeenthroughthebestinthepastC．theflightofDiscoveryisasuccessD．theastronautsarenationalheroes3、WhentheDiscoverytookoff,________.A．thefueltankburnedB．a(chǎn)pieceoffoaminsulationfellC．thesafetybeltisnotfixedD．itknockedintotheColumbia4、Theunderlinedword“grounded”means________.A．(ofaboat)hitthebottomofaseaandbeunabletomoveB．tocauseaboattohitthebottomofaseaorlakeC．topreventaplaneorpersonfromflyingD．tobebasedonsomething22．（8分）Moreandmorecomment(評論)sectionsarebeingshutdownonline.AutumnPhillipshadhadenough.OnAugust19,theexecutiveeditoroftheQuad-CityTimesinIowa,andIllinois,USvisitedherwebsite,qutimes.com,andsawastoryaboutamanwhohadbeenshottodeath.Whenshegottothereaders’commentssectionattheend,shewasshockedbywhatshesaw.Belowthestorywasagrowingstringofcomments—aracistremarkaboutdemocratic(民主的)voters,anegativecommentaboutpolice...SoPhillipsdecidedtodosomethingshehadbeenthinkingaboutforalongtime:sheshutdownthecommentsection.Phillipswasnotaloneinmakingsuchamove.Lastweek,NPRannouncedittoowasclosingitsonlinecommentssection.Thedecisionsdon’tmeanthatthenewsoutletsarenolongerinterestedinwhattheiraudiencesarethinking.Bothstressedtheireagernesstohearfromreadersandlistenersonsocialnetworks.Butbothagreedthatcommentshaddeviatedfromtheiroriginalintention.Andsotheyhad.Intheearlydaysofdigitaljournalism,commentswereseenasakeypartofthenewmedia,awonderfulopportunityforstrengtheningthedialoguebetweennewsproducersandtheiraudiences.Itwasawelcomechange,giventhatforlongmanynewsorganizationswerefartooseparatedfromtheirreaders.Muchmorebackandforthconversationseemedlikehealthyandwelcomeevolutions.Sadly,that’snotthewaythingsturnedout.Ratherthanaplaceforexchangingideas,commentssectionsbecamethehomeofuglyname-calling,racismandanti-womenlanguage.Besidestheirpoisonousquality,commentsseemoutofplacetoday.“Sincewemadetheannouncement,I’vereceivedanoutpouringofresponsesfromourreaders,”shesays.“I’veheardfromparentswhosechildrenwerehurtbyouronlinecomments.I’veheardfrompeoplewhosaidtheywouldn’tsendinletterstotheeditorbecausetheywereattackedsofiercelybycomments,anditwasn’tworthit.”1、WhydidAutumnPhillipsshutdownthecommentssection?A．Itwasputtowronguse.B．Herwebsitewasattackedheavily.C．Itexposedmanyillegalissues.D．Amanhadbeenshottodeath.2、WhatdoestheunderlinedsentenceinParagraph3indicateaboutcomments?A．Theyhadgoneoutofdate.B．Theyhadgoneagainsttheirinitialpurpose.C．Theywerefullofsensitiveinformation.D．Theycouldn’tinteresttheaudience.3、Whatwasthewelcomechangeintheearlydigitaljournalism?A．Readers’havingmoreaccesstovariousmedia.B．Readers’makingfewernegativecomments.C．Readers’freedomtoexpresstheirthoughts.D．Readers’activeinvolvementinthenewsindustry.4、Whatisthebesttitleofthepassage?A．StophurtingpeopleonlineB．RacistscomingfromnowhereC．MorecommentsectionsclosedonlineD．AmovebyAutumnPhillips23．（8分）It’sasadnesssharedbymanybusinessstart-ups:whydidmycompanyfail,whilesomanyothersseemtobeprofitingfromthe“goldenageofentrepreneurship(創(chuàng)業(yè)精神）”？Somepeoplearguethatopportunitiesandgoodfortunearethesecretstosuccess.ButInnovationWorksCEOKaifuLeebelievesthatentrepreneursneedtohavecertainqualitiestohelpthemfacethedifficultiesofstartingabusiness.AtarecentLinkedInconference,Leementionedsomeofthesequalities.“Eventhoughwe’renowinagoldenperiodforinnovationandstart-ups,noteveryoneismeanttobeanentrepre-neur.Entrepreneurssharethesamequalities—theyareconfident,communicativeandfocused.Theydon’tfearlosing,andtheyaregoodatlearning,”hesaid.Leeexplainedthatheoftenmeetsyoungpeoplewhoareirresoluteaboutsettingupabusiness.“Ifthat’sthecaseforyouthendon’tdoso,”hesaidattheconference.Thebottomline,hesaid,isthatentrepreneursshouldbedeterminedandpassionate.passionisvitaltoentrepreneurssinceittypicallyrelatestoself-motivation,accordingtoLiJun,26,founderofWuhanLushenglinPlantWallCoLtd.“Entrepreneursoftenneedtoworkaroundtheclock.It’seasierforpeopletoputupwiththedifficultscheduleifthey’repassionateaboutwhatthey’redoing,”hesaid.Entrepreneursarealsogenerallythoughtofasrisk-takers.ButYuXiuhong,generalsecretaryoftheBrightChinafoundation,warnsthatyoungentrepreneursshouldnottaketoomanyrisks.“Successfulentrepreneursrarelytakerisksblindlyorjumpatopportunitiesothersavoid.Beforelaunchingabusiness,it'sadvisabletodomarketresearch,evaluateyourselfandyouropponents,”shesaid.Alsosheadvisesthatyoungpeoplethoroughlycalculatetheirexpensesinadvance.TakeLiDongjinasanexample,35-year-oldlong-termentrepreneurdisappearedaweekagoafterhisO2Ocarwashingcompanyfaileddisastrously.Hehadgottenaninitialinvestmentof5millionyuanbutwasteditallonallowanceandpublicity.1、WhichofthefollowingisnotthequalityofanentrepreneuraccordingtoKaifuLee?A．Confidence.B．Determination.C．Leadershipskill.D．Learningability.2、WhatdidLiJunsayaboutentrepreneurs?A．Theycan’tbemotivatedwithoutenthusiasm.B．Theyshouldn'tcomplainabouttheirtight.schedule.C．Theyshouldhaveanurgetoimprovethemselves.D．Theymaysufferhealthproblemsduetoheavyworkloads.3、Whathastheclosestmeaningwiththeunderlinedword“irresolute”inParagraph4?A．Delighted.B．Hesitant.C．Anxious.D．Sure.4、Whatcanweinferfromthelasttwoparagraphs?A．YuXiuhongregretsjumpingatopportunitiesbefore.B．LiDongjinisafailureforlackofadventurousspirit.C．LiDongjinshouldn’thavestartedacarwashingcompany.D．YuXiuhongbelievesitamusttothinktwicebeforetakingrisks.24．（8分）Mycollegeexperienceincludedthislife-skilllesson:Drinkalcoholonafullstomach.Oryouwillgetinebriatedtooquickly.Ofcourse,mostcollegestudentsshouldn’tbedrinkingatall,butweknowfromtheNationalInstituteonAlcoholAbuseandAlcoholismthatcloseto60percentofcollegestudentsaged18to22doconsumealcohol,whichmakesharm-reducingapproachesimportant.Unfortunately,campusauthoritiesandresearchersarereportingapracticethatturnsthefull-stomachdrinkingstrategyonitshead:ratherthanfillingupbeforeanightofpartying,significantnumbersofstudentsrefusetoeatalldaybeforeconsumingalcohol.Thisisahigh-riskbehaviorcalled“drunkorexia,”whichisoneparteatingdisorder,onepartalcoholism—averydangerouscombinationforcollege-agestudents.Thetermdrunkorexia,whichcanalsoincludeexcessiveexerciseorpurgingbeforeconsumingalcohol,wascoinedabout10yearsago,anditstartedshowingupinmedicalresearcharound2012.Drunkorexiaaddressestheneedtobethelifeofthepartywhilestayingextremelythin,pointingtoaflawedmind-setaboutbodyimageandalcoholismamongcollegestudents,mostlywomen.Imaginethisscenario:Afemalecollegefreshmandoesn’teatanythingallday,exercisesonanemptystomach,thendownsfiveshotsoftequilainlessthantwohours.Becausethere’snofoodinhersystemtohelpslowtheabsorptionofalcohol,thoseshotsaffectherrapidly,leadingtoinebriationandpossiblypassingout,vomitingorsufferingalcoholpoisoning.That’sdrunkorexia.TavisGlassman,professorofhealtheducationandpublichealthattheUniversityofToledoinOhio,researchesdrunkorexiaandworriesaboutscenariossuchastheonedescribedabove:“Withnothinginhersystem,alcoholhitsquickly,andthatbringsupthesameissuesaswithanyhigh-riskdrinking:gettinghomesafely,sexualassault,unintentionalinjury,fights,hangoversthataffectclassattendanceandgrades,andpossiblyendingupinemergencybecausethealcoholhitssohard,”hesays.“Alcoholcannegativelyaffecttheliverorgastrointestinalsystem,itcaninterferewithsleep,lowertheimmunesystemandislinkedtoseveraltypesofcancers,”Hultinsays.1、Whatdoestheunderlinedword“inebriated”inparagraph1mean?A．excited B．overwhelmed C．a(chǎn)ddicted D．drunk2、Wecaninferfromthepassagethat____________.A．a(chǎn)largenumberofcollegestudentsspendmostoftheirnightspartyingB．somecollegestudentsrefusetoeatbeforedrinkingalcoholtokeepslimC．ThereisadirectlinkbetweenbodyimageandconsumingalcoholD．femalecollegestudentismorelikelytobehurtifshedrinksalcohol3、WhichofthefollowingmayTavisGlassmanagreewith?A．Withmorefoodinone’ssystem,hemaysufferfromtheeffectsofalcoholslowly.B．Drinkingfiveshotsoftequilainlessthantwohoursistheperformanceofdrunkorexia.C．Thosewhodon’tattendclassesandhavelowergradestendtobeaddictedtoalcohol.D．Alcoholhasnegativeeffectsontheimmunesystemandmayleadtoseveralcancers.25．（10分）MatthewLaytonwas20minutesfromhomeinSevierville,Tennessee,onacoldNovembernightin2016whenhegotacellphonecallfromhismother.“Themountain’sonfire,”shescreamed,“andBrian’supthere!”Layton’sfamilyownedadozenrentalcabins(小屋)onShieldsMountain,andLayton’sfriendandfellowrental-cabinowner,BrianMcGee,age56,wasuptheretryingtoputthefireoutbyhimself.Layton,32,hitthegas.Helivedonthemountaintoo.Laytonturnedaroundandheadedforadirtroad.Hemadeitabouthalfwayupthesteep,windingpathbeforehisfront-wheel-drivecargaveup.HecalledMcGee,whodrovedowninhispickupsotheycouldfightthefiretogether.TheyheadedfirsttoLayton’srentalcabins.“Iwantedtomakesureourguestsweregone.Theywere,”saysLayton.Atthatpoint,hehadachoice:trytosavehiscabinsorrescuepeoplerentingothercabinsnearby.“Onthemountain,youdon’thavemanylocals.They’remostlytouristswhodon’tknowtheirwayaround,”hesays.Overthenexttwohours,thetwofriendsdrovethroughthesmokymountain,knockingondoorsandleadingpanickedpeopletosafety.“Iknowthatmountainsowell,”Laytonsays,“IcoulddriveandknowexactlywhereIamjustbytimetraveled.”Thankstotheirbraveandimmediateaction,thetwohelped14peopleoutofthedanger.FourteenpeoplediedthatnightinSevierCounty.Butthefiredidn’ttakeawayasinglelifeonShieldsMountain.Andthoughhishomeandbusinessweredestroyed,Laytonremainscalm.“Iwasn’tworriedaboutmyloss,notwhenIsawthosefamiliestrappedonthemountain,”hesays,“IknewIwasgonnahelpthem.”1、WherewasLaytonwhenthefirebrokeout?A．Visitinghismother.B．Awayfromhishome.C．Headingforthecabins.D．Drivingonadirtroad.2、WhatcanwelearnfromPara.2&3?A．Layton’scarbrokedownhalfway.B．BrianwasinchargeofLayton’scabins.C．LaytonpickedupBrianonthepath.D．Brianlivedinthemountainalone.3、Whycouldthetwofriendsrescuethepeople?A．Theyputoutthefirebeforeitspread.B．Theyturnedtolocalsforhelp.C．Laytonwasfamiliarwiththearea.D．Briangaveuphisowncabins.4、WhatdidLaytonmeaninthelastparagraph?A．Heblamedhimself.B．Hesufferedalot.C．Hefeltsorry.D．Hewasrelieved.第三部分語言知識(shí)運(yùn)用（共兩節(jié)）第一節(jié)（每小題1.5分，滿分30分）閱讀下面短文，從短文后各題所給的A、B、C和D四個(gè)選項(xiàng)中，選出可以填入空白處的最佳選項(xiàng)．26．（30分）Astoryspreadaroundthata13-year-oldboyfellintoariverofsewage（下水道）andwassavedbyrescuers．Theboy，Phil，was1morethan12hoursinthecity's2undergroundsewagesystem．Itis3withwasteliquidsandotherwastematerials，whichwere4．Philhadbeenplayingatapublicparkwithother5duringafamilygatheringonSunday．Atonepoint，thechildrenwereonpiecesofwoodthat6anopeningleadingtothesewagesystem．Oneofthewoodenboards7．Theboyfellabouteightmetersdownand8infast-movingwastewater．Theotherchildren9toldadultswhathadhappened．Theadultsthencalledanemergencytelephonelineforhelp．Rescuersimmediatelybegan10Philunderground．Theysetcamerasonfloatationdevices，whichtheyputintothesewagesystem．Rescuersfinally11Philafterseeingimagesofhandprintsonapipe．Acrewofsanitation（衛(wèi)生系統(tǒng)）workershurriedtothe12andopenedahole．Thefirstthingthey13was"Help!"Thecrewlowereddowna14ropetoPhil．Theboyheldontotheropewhileworkers15himup．BythetimeworkersfoundPhil，about700metersofpipeshadbeen16duringa12-hourperiod．Philwasfoundlessthantwokilometersfromwherehefellin．Hewastakentoa17forafullphysicalexaminationandtobereunitedwithhis18．Morethan100peopletookpartinthe19ofPhil．Philwasabletofindasmallareaofbreathableairand20thereuntilhewasfound．1、A．kept B．hidden C．trapped D．shut2、A．tiny B．dangerous C．dry D．unknown3、A．filled B．faced C．compared D．occupied4、A．dusty B．unusual C．useless D．poisonous5、A．visitors B．kids C．strangers D．parents6、A．carved B．fixed C．connected D．covered7、A．broke B．sank C．existed D．survived8、A．swam B．landed C．suffered D．fought9、A．seriously B．eventually C．quickly D．exactly10、A．searchingfor B．caringabout C．turningto D．calmingdown11、A．lifted B．stuck C．found D．caught12、A．water B．a(chǎn)rea C．block D．street13、A．saw B．felt C．feared D．heard14、A．thin B．short C．loose D．long15、A．pulled B．packed C．picked D．waked16、A．judged B．selected C．removed D．inspected17、A．park B．school C．hospital D．club18、A．friends B．family C．class D．relatives19、A．struggle B．game C．rescue D．a(chǎn)dventure20、A．waited B．relaxed C．exposed D．shouted第二節(jié)（每小題1.5分，滿分15分）閱讀下面材料，在空白處填入1個(gè)適當(dāng)?shù)膯卧~或括號(hào)內(nèi)單詞的正確形式。27．（15分）MydeskmateadmiresmyfluentEnglishverymuchandIusuallyfeel1．(encourage)byhiscompliments.Oneday,2．welearnedthenewword“eccentric”inclass,we3．makeasentencewithit.Ivolunteeredtodoitbysaying“Mydeskmateisaneccentricboy4．clotheneverfithim.”Hearingthis,thewholeclassburstinto5．(laugh)andmydeskmate’sfaceturnedred.6．class,Ilearnedfromtheteacherthatmydeskmate7．(drop)outofschoolifhehadn’tbeenhelpedbyothers.Mymindlesswordsmust8．(hurt)himdeeply.Notuntilthendid1realizewordscouldbepowerfulin9．positiveandnegativeways.Weshouldavoid10．(hurt)othersifwecan’talwaysbeencouragingthemwhenwespeak.第四部分寫作（共兩節(jié)）第一節(jié)短文改錯(cuò)（滿分10分）28．（10分）假如英語課上老師要求同桌之間交換修改作文，請你修改你同桌寫的以下作文。文中共有10處語言錯(cuò)誤，每句中最多有兩處。每處錯(cuò)誤僅涉及一個(gè)單詞的增加、刪除或修改。增加：在缺詞處加一個(gè)漏詞符號(hào)（∧），并在其下面寫出該加的詞。刪除：把多余的詞用斜線（\）劃掉。修改：在錯(cuò)的詞下面劃一橫線，并在該詞下面寫出修改后的詞。注意：1、每處錯(cuò)誤及其修改均僅限一詞；2、只允許修改10處,多者(從第11處起)不計(jì)分。Thephotowastakenduringthesixtyanniversaryofourschool、Theelderlymanonthepictureattendedourschool50yearsago,shortlyafteritfounded、Itwasthefirsttimehehasbeenbacktoourschoolfromhegraduatedandhewasdeeplyimpressedbyitslook、Onceayoungstudent,theelderlymannowhasgrayhairorwrinkles,whileourschoolhasanewandmoremodemlook、Afteralltheseyears,he’sstillemotionalwhentalkingaboutthathowproudheisofoncebeingastudentofourschool、Iwasgreattouchedbythescene、IknowsomedayI’llhaveasamefeelingasthislovelyman、第二節(jié)書面表達(dá)（滿分25分）29．（25分）假定你是李華．你剛從英國為期五天的旅游回來，感謝好友Rick的款待．得知他對中國的文化非常的感興趣，特別是即將到來的端午節(jié)，請你寫一封信介紹中國的端午節(jié)．內(nèi)容要點(diǎn)：1）感謝他的招待．2）介紹中國的端午節(jié)（時(shí)間，意義，風(fēng)俗等）3）歡迎他來中國．注意：1）詞數(shù)100左右；2）可以適當(dāng)增加細(xì)節(jié)，以使行文連貫；3）開頭和結(jié)尾已為你寫好．DearRick，H