山东省淄博第十中学2024-2025学年下学期高三英语试题第一次联考考试试卷含解析

山东省淄博第十中学2024-2025学年下学期高三英语试题第一次联考考试试卷请考生注意：1．请用2B铅笔将选择题答案涂填在答题纸相应位置上，请用0．5毫米及以上黑色字迹的钢笔或签字笔将主观题的答案写在答题纸相应的答题区内。写在试题卷、草稿纸上均无效。2．答题前，认真阅读答题纸上的《注意事项》，按规定答题。第一部分（共20小题，每小题1.5分，满分30分）1．Youwon’tfindpapercuttingdifficult_____youkeeppracticingit.A．evenifB．aslongasC．asifD．eversince2．—Shallwegototheseveno’clockperformanceortheeight?—_____suitsyoufine.A．Whatever B．Whichever C．Whenever D．Wherever3．—Youknowquitealotaboutthefashionshow.—Well,Cathy________ittomeduringlunch.A．introducesB．introducedC．hadintroducedD．willintroduce4．Largequantitiesoftime______forpractisingguidedwritings.A．wasneeded B．areneeded C．needs D．isneeded5．Youthisaperiodofourlifeweseenolimittoourhopesandwishes.A．where B．thatC．what D．when6．Wehadbetterputoffinterviewingtheathlete,forheisbusypreparingforaninternationalcontest__________inShanghainextmonth.A．held B．toholdC．beingheld D．tobeheld7．Theimportance______anationaldayandhowitiscelebratedareverydifferentfromcountrytocountry.A．connectedto B．givento C．meaningto D．attachedto8．TherewasneveranytimeforKatetofeellonely,________shewasanonlychild.A．eversince B．nowthatC．eventhough D．asthough9．TheEnglishinthisstoryhasbeensimplifiedtomakeiteasier_______.A．tobeunderstood B．understood C．understanding D．tounderstand10．MarkhaslivedinChinaformanyyears,yethestillcan't________himselftotheChinesecustoms.A．observe B．adaptC．lead D．devote11．Wesellalotofproductsoffshoreandtheopportunitytoopenupmarketsinregions________wedon'tcurrentlysellalottoisagreatone.A．where B．thatC．what D．when12．TheteachercalledTomtohisofficebecausehewascaughtintheexam.A．tocheat B．cheating C．cheated D．cheat13．—Whycan’tJohnlanda__________jobinyears?—Anyonewithcriminalrecordswillbelaidofffirstwhenitcomestimetoletstaffgo.A．rewardingB．demandingC．worthwhileD．stable14．Inthepastfewyears,we’veseenworksbyChinesesci-fiwriterswinninginternational______.A．conclusion B．standardC．potential D．recognition15．—Goodmorning.MayIhelpyou?—No,thankyou.I’mjustlookingaround.—________A．It’suptoyou. B．Howareyoufeelingtoday?C．Thanksforcomingtoseeme. D．Takeyourtimethen.16．Ididntseeyoursisteratthemeeting.Ifshe,shewouldhavemetmybrother.A．hascome B．didcomeC．came D．hadcome17．Therearevariousthingsonsale,soyoucanchoose______interestsyou.A．whoever B．nomatterwhoC．whatever D．nomatterwhat18．Cellsareimportantbecausetheyareorganizedstructuresthathelplivingthingtheactivitiesoflife.A．carryonB．expandonC．putonD．hangon19．Withineventheweakestofhumanbodiesliesalifethatispreciousindeed____needstoberespectedandhonored.A．somethingthat B．one C．onethat D．something20．______tonuclearradiation,evenforashorttime,mayinfluencegenesinhumanbodies.A．Havingexposed B．BeingexposedC．Toexpose D．Exposed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）Findingtruelovecanbepreytoughforalotofpeople,butaladyfromafairlywell-knownSanFranciscoadvertisingagencyseemstothinkmoneyhelps.Sheisoffering$10,000toanyofherfriendswhocanintroducehertoherMr.Right.Shewantstofindherfuturehusbandthroughthisway.Theunnamedhusbandseekerwhosentouttheemailhadjustfinishedreadingthebest-sellingbooknamedLeanIn.Itwas11p.m.onaSundaynightandsherealizedthiswasthesecondself-helpbookshehadreadinthemonth.Shewasstillsingle.Thingswerenotlookingfine,buttherewashopeforherstill.Ifthebookhadtaughtheranything,itwasthatsheneededtotakeamorepositiveroleinfindinglove.Afterall,ifshewantedtogetabetterjob,shewouldn’tjustsitoutsideanemployer’sbuildingandwaitforsomeonetoofferittoher,sowhyshouldfindingahusbandbeanydifferent?Butinsteadofgoingoutandmeetingnewpeopleshedecidedtowriteanemailtoallherfriends,offeringtogivethem$10,000onherweddingdayifanyofthemmanagedtointroducehertoherfuturehusband.“IamwritingyoutodaybecauseI’vedecidedtomakeanaggressiveactionplanonfindingthemanthatIgettohangoutwithforever,”thewomanwritesinheremail.“Introducingmetomyhusbandisjustnothighonyourto-dolist.ButIthinkIhaveanideathatmightchangethat…”Youguessedit,andthisiswheresheofferstorewardher“closestfriends”withcoldhardcash.“Iwillpersonallygivetenthousanddollarstothefriendwhointroducesmetomyhusband.”Hereishowtheprogramworks:Step1:Yousetmeuponadatewithaman.Step2:Imarrythatman.Step3:Igiveyou$10,000onmyweddingday.Iknowyou’rethinkingthatthisisnuts.Justplaincrazy.‘Youcanfindahusbandwithoutgiving$10,000.’Wellforstarters,thankyou!I’mhappy.”1、Whatdoestheladyoffer$10,000toanyofherfriendsfor?A．Celebratingthefactthatshehasmadeadecisiontofindahusband.B．Checkingthepowerofmoneyamonghercircleoffriends.C．EncouragingherfriendstohelpfindherMr.Right.D．Sharingherhappinessofhavingfoundtruelove.2、Whatdoestheunderlinedword“nuts”meaninthelastparagraph?A．deliciousB．sensibleC．angryD．foolish3、What’sthepurposeoftheauthor’smentioninggettingabetterjobinParagraph2?A．Tostresstheimportanceoffindingagoodjob.B．Tostresstheimportanceoftakingapositiveattitude.C．Toshowthatwaitingpatientlyisnecessarytogetajob.D．Tostatethatweneedtobepatientbeforeajobisoffered.4、Whatkindofpersondoyouthinktheladyis?A．AdventurousB．ImaginativeC．ConsiderateD．Polite22．（8分）BooksYou’llNeedForYourShelfInFall2017♦SwingTime-ByZadieSmithTheauthorofcountlessessayshasanewworkoffictionontheway,and,onceagain,she’slookingatyoungwomenofcolorfindingtheirlivesastheygrowintoadulthood.InSwingTime,it’stwofriendswhoshareapassionfordancing.Asthewomenreachtheir20s,theypartways—buttheirfriendshipcontinuesthroughouttheirlives.♦AnotherPlaceYou’veNeverBeen-ByRebeccaKauffmanHercollectionisasetofconnectedstories,eachaboutayoungwomannamedTracywholivesandworksasawaitress.ThestoriesfollowTracyfromchildhoodtopresentday,throughpartiesintotheworkingworld.SomeareshowedbyTracyherself,butwe’regivenafullerviewofhercharacterfromstoriestoldfromeyesofothers.♦Moonglow-ByMichaelChabonMichaelChabondrewinspirationforhisnewnovelfromstorieshisgrandfathertoldin1989—storiesofacolorfullifethattouchedonunexpectedbitsofhistory.ItpromisestobearallofChabon’sbestqualities:amazingaccounts,realandknowablecharacters,andatasteoftophumor.♦WhateverHappenedtoInterracialLove?-ByKathleenCollinsKathleenCollinsdiedin1988atjust46.Writtenseveraldecadesago,thestoriesofferanhonest,artfulpeepholeintothethoughtsandexperiencesoftheblackpeopleandwomenaboutwhomCollinswrites.1、IfAndywantstoreadsomethingfunny,whosebookcanberecommended?A．ZadieSmithB．MichaelChabonC．KathleenCollinsD．RebeccaKauffman2、InwhichpartofalibrarycanweprobablyfindSwingTime?A．MathB．WomenC．HistoryD．Medicine3、ThebookAnotherPlaceYou\eNeverBeeniswrittenbyfollowing.A．orderoftimeB．orderofspaceC．orderofimportanceD．orderofemergency23．（8分）InAHistoryofReading,theCanadiannovelistAlbertoMangueldescribesaremarkabletransformationofhumanconsciousness,whichtookplacearoundthe10thcenturyA．D．:thearrivalofsilentreading.Humanbeingshavebeenreadingforthousandsofyears,butinancienttimes,thenormalthingwastoreadaloud.Withthearrivalofsilentreading,Manguelwrites,…thereaderwasatlastabletoestablishanunrestrictedrelationshipwiththebookandthewords.Thewordsnolongerneededtooccupythetimerequiredtopronouncethem.Thereader’sthoughtsinspectedthematleisure,drawingnewideasfromthem,allowingcomparisonsfrommemoryorfromotherbooks.①Toreadsilentlyistofreeyourmindtoreflect,toremember,toquestionandcompare.ThecognitivescientistMaryanneWolfcallsthisfreedom“thesecretgiftoftimetothink”.Athousandyearslater,criticsfearthatdigitaltechnologyhasputthisgiftindanger.TheInternet’sfloodofinformation,togetherwiththedistractionsofsocialmedia,threatenstooverwhelmthespaceofreading,leavingusinwhatthejournalistNicholasCarrhascalled“theshallows”.InCarr’sview,the“endless,temptingbuzz”oftheInternetendangersourverybeing:“Oneofthegreatestdangersweface,”hewrites,“aswegiveupcontrolovertheflowofourthoughtsandmemoriestoapowerfulelectronicsystem,isaslowdamagetoourhumannessandourhumanity.”②There’snoquestionthatdigitaltechnologypresentschallengestothereadingbrain.Butseenfromahistoricalperspective,digitalreadingandsilentreadinglooklikedifferencesofdegree,ratherthanofkind.Totheextentthatdigitalreadingrepresentssomethingnew,itspotentialcutsbothways.Donebadly,theInternetreducesustomindlessclickers,racingnumblytothebottomofabottomlessfeed;butdonewell,ithasthepotentialtoexpandtheverycontemplative(沉思的)spacethatwehaveprizedinourselveseversincewelearnedtoreadwithoutmovingourlips.③InthefifthcenturyB．C．,Socratesworriedthatwritingwouldweakenhumanmemory,andstifle(扼杀)judgment.Infact,asWolfnotesinher2007bookProustandtheSquid:theStoryandScienceoftheReadingBrain,theoppositehappened:Facedwiththewrittenpage,thereader’sbraindevelopsnewcapacities.④TheInternetmaycauseourmindstowanderoff,andyetaquicklookatthehistoryofbookssuggeststhatwehavebeenwanderingoffallalong.Whenweread,theeyedoesnotprogresssteadilyalongthelineoftext;italternatesbetweensaccades—littlejumps—andbriefstops,notunlikethemovementofthemouse’scursoracrossascreenofhypertext.It’struethatstudieshavefoundthatreadersgiventextonascreendoworseonrecallandcomprehensionteststhanreadersgiventhesametextonpaper.Buta2015studybytheGermaneducatorJohannesNaumannsuggeststheopposite.Hegaveagroupofhigh-schoolstudentsthejoboftrackingdowncertainpiecesofinformationonwebsites;hefoundthatthestudentswhoregularlydidresearchonlinewerebetteratthistaskthanstudentswhousedtheInternetmostlytosendemail,chat,andblog.Anewgenerationofdigitalwriterspreferstoincludeinteractivefeatures.The2014iPadnovel,Pry,tellsthestoryofademolition(爆破)expertreturninghomefromthefirstGulfWar.Thestoryistoldintext,photographs,videoclips,andaudio.Itusesaninterface(界面)thatallowsyoutofollowtheactionandshiftbetweenlevelsofawareness.Asyoureadtextonthescreen,describingcharactersandplot,youdrawyourfingersapartandseeaphotographofthechiefcharacter,hiseyesopeningontheworld.Pinchyourfingershutandyouvisithistroubledunconscious;wordsandimagesraceby,asifyouareinsidehismemory.Pryistheoppositeofashallowwork;itswholeplayisbetweenthesurfaceandthedepthsofthehumanmind.Readingitisstimulating.1、InAlbertoManguel’sopinion,silentreading________.A．isanabnormalthingtohumanconsciousnessB．offersreaders’mindfreedomandtimetothinkC．strengthensreaders’powerofmemoryandreflectionD．allowsreaderstogainaninsightintobooksandwords2、Whyisdigitaltechnologyconsideredtohaveendangeredourbeing?A．Itpresentschallengestothereadingbrain.B．Itharmsourhumannessandhumanitygradually.C．Itisverylikelytoexpandourcontemplativespace.D．Itleavesourthoughtsandmemoriesoutofcontrol.3、Thesentence“Thefearoftechnologyisnotnew.”shouldbeplacedin________.A．① B．② C．③ D．④4、WhatcanweinferfromJohannesNaumann’sstudy?A．It’seasiertocollectinformationontheInternetthaninbooks.B．People’shabitofusingtheInternetinfluencestheirperformance.C．TheInternetisn’tsupposedtobeusedasatoolofentertainment.D．Paperreadingisbetterthanscreenreadinginimprovingcomprehension.5、The2014iPadnovel,Pry,ismentionedinthelastparagraphto______.A．introducetheoccurrenceofareadingrevolutionB．showthetechnologyemployedindigitalreadingC．provedigitalreadingnotshallowbutattractiveD．illustratetheimpactdigitalreadinghasonourlife.6、Whatisprobablythebesttitleforthepassage?A．ThedeepspaceofdigitalreadingB．ThetimelyarrivalofsilentreadingC．ThedevelopmentoftraditionalreadingD．Thepotentialdamageofelectronicbooks24．（8分）Earlierthissummer,CarolLeReschegotthephonecallshe’dbeenwaitingfor.Atouristwaspickingzucchini(西葫芦)atThorneRiderPark.“It’sexactlywhatwehopedwouldhappenwhenweputinthefoodforest,”explainedLeResche,thepark’sfoodforestfounder.InMay,hereceiveda$3,500fund.Themoneywastohelpturnaformerparkintoanedible(可食用的)landscape.It’saplacewhereallofthefruits,vegetablesandnutsarefreeforthetaking.Unlikesomeparkswithstrict“nopicking”policies,foodforestsaredesignedtoprovidecolorfulcrops.Peopleareencouragedtoharvestthem.“Wethinkit’simportanttoputpublicfoodinpublicspaces,”shesaid.Thedesiretoknowmoreaboutwhereourfoodcomesfromisoneofthereasonsthereisarealtrendtowardagricultureintoneighborhoodsandcommunities.There,peoplecanparticipateintoursandclassesorrelaxamongthefruittrees.Foodforestsprovidedifferentkindsoffreshproducemorethanwecanbuy.Foodforestsarebasedonamodelvaluingsustainableandmostlyself-sufficientagriculturalproduction.Thefoodforestmodelrequireslesschemicalfertilizerandlesslaborthantraditionalagriculture.Anedibleforestisdesignedtodevelopwithoutpesticidesorweeding.Sincetheconceptisrelativelynew,andittakesatleastthreeyearsforfruitandnuttreesandberrybushestostartproducingmeaningfulamountsoffreshfood,it’shardtoknowwhetherfoodforestswillhaveanimpactonfooddeserts.Volunteer-drivenprojectscanfallapartifthegrouplosesinterest.Lackoffundingcanalsobeproblematic.Pestsalsoareanoften-citedconcern.Afterallandaboveall,LeRescheexplained,foodforestsareaboutalotmorethanfood.“Wealsowanttoprovideagatheringspacethatisproductiveandbeautifulwherepeoplecandeveloparelationshipwitheachotherandgetconnected.”1、Comparedwithcommonfoodbought,whatisspecialaboutthefoodinedibleforests?A．Ittastesbetter.B．Ithasmorevarieties.C．Ithasfunnyappearances.D．It’sproducedfreeoffertilizer.2、WhatisstressedinParagraph4?A．Foodforestsmaydisappearsoon.B．Foodforestshavealongwaytogo.C．Foodforestswastelotsofnaturalresources.D．Foodforestsseemimaginaryandimpossible.3、AsforLeResche,whatisthemostimportantroleoffoodforests?A．Awaytorelaxandentertain.B．Awaytosolvefoodshortage.C．Awaytobethankfulfornature.D．Awaytomeetandmakefriends.4、Whatistheauthor’spurposeinwritingthetext?A．Tocallhelp.B．Toraisemoney.C．Tocompareandargue.D．Toinformandintroduce.25．（10分）Dogsandcatsarenotforstudentswholiveinthedormitory.Justthinkaboutthenoise,thesmellandallthatwildbehavior,chewingonwhatevertheycangettheirteethon,orknockingoverthetrashcan.Butdon’tfeelsad.Therearesmallerandlessdestructivepetstomakeyourdormitorylifecolorful.BettafishTheymakegreatpetswiththeirbigpersonalityandastonishingcolors,rangingfrombrightred,darkbluetolemonyellow.Unlikemanyfish,mostbettasreacttotheirowner’spresenceandbecomemoreactivewhentheyarenearby,whichisunusualinthefishworld.ChinchillasWithoutbadsmell,aboutthesizeofarabbitandwithfursodensethattheycan’tgetpestssuchasfleas(跳蚤),thefriendlycreatureoriginallyfromtheAndesMountainsinSouthAmericamakesanidealindoorpet.Chinchillasareverysocialanimals,soifyouonlyhaveone,youwillbecomeitsfamily.Incoldwinterdays,inaglanceatthisfurypetinadormwillbringyoualotofwarmth.LandhermitcrabsInasocietywhereownersareoftenasked“Aretheytasty?”,landhermitcrabsareamongthemostunluckyanimalscommonlykeptaspets.Buttheyareeasytocarefor,inexpensiveandfascinatingtowatch.Andthefactthattheydon’tcauseanyallergicreactionsmakesthemperfectforcollegedormitories.Red-earedslidersIfyou’reinterestedinalifelongfriend,red-earedslidermakesawonderfulpet.Ifwellcaredfor,theycanliveforaround40years.Butthereareacoupleofthingsyoushouldknow.Red-earedcangrowtoanadultsizeofupto30cm!Soyoumayneedalargertankquickly.Inaddition,youwillneedtoprovideUVlighting,waterheater,andaswimmingareaandabasking（晒太阳）area.Housingared-earedsliderisnoteasy.1、Allthedormitorypetsmentionedinthetextare.A．activeandallergic B．quietandpeacefulC．colorfulandtasty D．smallandsmelly2、WhichofthefollowingisNOTtrueaboutthesecreatures?A．Betasareactiveandrichincolors.B．Chinchillasareoriginallymountainanimals.C．Landhermitcrabsareallergicbuttasty.D．Red-earedslidersneedmorecarefromtheowner.3、Ifyouwanttokeepthepetaslongaspossible,you’dbetterchoose.A．Betafish B．ChinchillasC．Landhermitcrabs D．Red-earedsliders4、Thepassageismainlyto.A．introducethebestwaytokeeppetsB．offerusefulpicturesforchoosingpetsC．informstudentsoflifestyleofpetsD．recommendsomedormitorypets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）Forlong,alittleboywaswonderingwhyhisdeskmatecouldrank1stintheclasswheneverhewantedto,whilehehimselffailedto:heonlyranked21st.Athome,heaskedhisMom,“Mom,amImore1thanothers?IfeelIamobedientandascarefulashim,but2Ialwaysfallbehind?”Hearingthewords，Momwasawarethathersonbeganto3thesenseofself-respect,whichwasnowbeinginjuredbytherankingsystem.4athim,shewentwordless,notknowing5toexplain.Inanothertest,thesonranked17th,whilehisdeskmateremained1st.Backhomehe6thesamequestion.Momreallywantedtoinformhissonthat7differs,whichmeansthatstudentsranking1staresupposedtobeclevererthannormalones.8,wasthisdiscouraginganswertheonethathersonwasconstantly9about?Thankgoodnessshedidnotopenhermouth.Howtoanswerherson’squestion?Thereweretimeswhenshefeltanurgetosay,“Youaretoolazy.Youarenotashard-workingasothers…”butshestopped10imagininghersonsufferingfromthepainsofunsatisfiedgradesandrankings.Shethoughtit11toputanyadditionalburdenonhissonandwastryingtofindoutaperfectanswer.Timepassingswiftly,theson12primaryschool.Despitestudyingharderandbetter,hewasstillunabletokeepupwithhisdeskmate.Toshowherprideofhim,Momdecidedto13himtothesea.Duringthetrip,shemanagedtogiveananswer.Now,thesonnolongerworriesabouthis14,andtherearenoboringguyswhowouldinquirehisgradesinprimaryschool,because,15the1stranking,heisadmittedtoTsinghuaUniversity.Backhomeinwintervacation,hewasinvitedto16thestudentsandparentsinhishighschool,Inthespeech,hementionedavaluableexperienceinhischildhood,“…WhenmymotherandIwerelyingonthe17,shepointedtothefrontandsaid,“Doyouseetheseabirdsstrugglingforfoodoverthere?Whenthewavescomenear,littlebirdscanrise18whileawkwardseagullswouldtakemoretimetocompletetheprocess.However,haveyounoticedbirdsthatfinallyfly19theendlessoceanarenoneotherthantheawkwardseagulls?”Thespeech20manymotherspresenttotears,includinghismother.1、A．considerate B．careless C．stupid D．clever2、A．whatif B．howcome C．howabout D．whatfor3、A．lose B．have C．win D．beat4、A．Shouting B．Glaring C．Staring D．Pointing5、A．which B．why C．when D．how6、A．raised B．met C．answered D．got7、A．intelligence B．right C．knowledge D．strength8、A．Therefore B．Still C．Thus D．However9、A．enthusiastic B．curious C．crazy D．clear10、A．if B．before C．unless D．when11、A．cruel B．important C．disappointed D．necessary12、A．attended B．started C．finished D．entered13、A．guide B．take C．bring D．push14、A．homework B．belongings C．health D．rankings15、A．in B．by C．with D．on16、A．teach B．deliver C．address D．face17、A．floor B．road C．bank D．beach18、A．quickly B．suddenly C．slowly D．sharply19、A．into B．through C．across D．throughout20、A．made B．moved C．impressed D．inspired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）OnenightlastFebruary,aseventeen-year-oldDuffydrovehomealongawindingroad,hesawastrangelightthrownagainstthetree“Iknewitwasn’tthemoon”,hesaid“Idrivethisroadall1．timeandInoticelittlethingsoutofplace”Duffystoppedhiscarandgotout2．(examine)BelowhimfardowninthedeepvalleylayabrokencarwithitsheadlightsonThirtyminutesearlier,amanhaddrivenofftheedgeoftheroad,whichhasnoguardrail(护栏)Hiscarfellandrolledendoverend,3．(land)onitstopmorethantwohundredfeetbelowDuffyrushedtocallforhelp,thenreturnedandgotdowntoreachthedriver4．wasbadlyinjuredSnowcoveredthevalley5．thetemperaturewasbelowfreezingAfterstrugglingbackupthecliff,Duffytookoffhisjacketandshirtandwrappedthemanintime,along6．theblanketsfromhiscarLife-saving7．(deed)arestartingtobecomeusualactionforDuffy,theoldestofsevenchildrenWhenhewas12,hesavedhisten-year-oldbrotherfromdrowningTwoyearsago,histhree-year-oldsister8．(eat)ratpoison,andDuffy9．(instant)cleanedouthermouth,makeherdrinkmilktoprotectherstomachandcalleddoctors“Wepersonalbeliefisthatitis10．(meaning)forustoteachthechildrengoodvalues,anditlookslikewehavegotsomerewardforit”hisfathersays第四部分写作（共两节）第一节短文改错（满分10分）28．（10分）请改正下面短文中的错误。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词；删除：把多余的词用斜线（＼）划掉；修改：在错的词下画一横线，并在该词下面写出修改后的词。注意：1、每处错误及其修改均仅限一词；2、只允许修改10处，多者（从第11处起）不计分。Ilovec