廣西柳州市高級中學(xué)2024屆高考適應(yīng)性月考卷（六）英語試題試卷含解析

廣西柳州市高級中學(xué)2024屆高考適應(yīng)性月考卷（六）英語試題試卷注意事項(xiàng)：1．答卷前，考生務(wù)必將自己的姓名、準(zhǔn)考證號填寫在答題卡上。2．回答選擇題時(shí)，選出每小題答案后，用鉛筆把答題卡上對應(yīng)題目的答案標(biāo)號涂黑，如需改動(dòng)，用橡皮擦干凈后，再選涂其它答案標(biāo)號?；卮鸱沁x擇題時(shí)，將答案寫在答題卡上，寫在本試卷上無效。3．考試結(jié)束后，將本試卷和答題卡一并交回。第一部分（共20小題，每小題1.5分，滿分30分）1．Theyhaveleadingexpertsinthisfield,andthat's____they'vemadeimportantprogress.A．whereB．whyC．whetherD．who2．Weallknowthatgoodresults________foryouwhenyoustartdoingthingsyoulove.A．a(chǎn)rewaitingB．havewaitedC．havebeenwaitingD．willbewaiting3．Hopefully，thenewmethodwillbeeffective，helpingstudentstogettheircareerplans________.A．a(chǎn)thandB．a(chǎn)twillC．ontrialD．ontrack4．Infrontofthewholeaudience,PremiereLimadehispromise______thegovernmentwouldtryitsbesttosolvetheproblemofpovertyinChina.A．whatB．whichC．whetherD．that5．Manyofusseereadingasaninvestmentinourselves，soit’sonlynaturalthatwewanttolearnsomethinguseful________ourefforts.A．inviewofB．inresponsetoC．inparallelwithD．inreturnfor6．________theconcerttoraisemoneyforhungerreliefandtomakethepublicawareoftheproblem,Geldofinvitedmanyfamousmusicianstotakepartinit.A．Intended B．Intending C．Havingintended D．Tointend7．Iusuallygotherebytrain.Whynot________byshipforachange?A．totrygoing B．tryingtogoC．totryandgo D．trygoing8．NASAhasmadea________thatourearthhasnothreatassociatedwiththefilm2012whichisbasedonpuremyths.A．clarification B．classification C．identification D．presentation9．Theproblemliesin______we’renowgivinghimafish,notteachinghimhowtofish.A．what B．thatC．which D．if10．Wepackedallthehooksinwoodenboxessothattheydamaged.A．don’tgetB．won’tgetC．didn’tgetD．wouldn’tget11．Itisusuallythoughtalittlechildsaysistruth.A．WhatthatB．thatwhatC．whichD．that12．Istillfindithardtoimaginethatsuchacleverchild__________makesuchafoolishmistake.A．shall B．mustC．can D．should13．ProfessorWang________inourschooltillnextSunday．A．willhavestayed B．hasstayed C．isstaying D．stayed14．Recently,aprogrammercriticizedthe“996”workschedule______employeesworkfrom9amto9pm,6daysaweek,withtheprospectofendingupinanintensivecareunit.A．where B．when C．which D．whose15．—Haveyoufoundthenewflatadvertisedinthenewspaper?—Yes.Butthecommunity____verylargeandInearlygotlostjustnow.A．hadbeen B．was C．willbe D．is16．______,hisideaswasacceptedbyallthepeopleatthemeeting.A．Strangeasmightitsound B．AsitmightsoundstrangeC．Asstrangeitmightsound D．Strangeasitmightsound17．WithWeChatPaycomingintowidespreaduse,ourhouseholdbillsareconvenient____.A．paying B．paid C．topay D．tobepaid18．Kunmingiscalled“SpringCity”,butit_____snowinwinter.A．shall B．can C．must D．might19．I’m_______ChineseandIdofeel______Chineselanguageis____mostbeautifullanguage.A．/,the,a B．a(chǎn),/,the C．a(chǎn),the,/ D．a(chǎn),/,a20．MayIspeaktoMr.Smith？Iamafraidnot.Heisatameetingnow.It'snot_____________A．reliable B．convenientC．beneficial D．a(chǎn)vailable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）Canyouimagineaworldwithoutchocolate?It'snotsomethingI'dlike,soIwasrelivedtoreadthatthere'sauniversitywithaprogrammetosafeguardthefutureofchocolate!TheuniversityofReading,inEngland,hasjustopenedanewclearinghouseforalltheworld'snewcocoavarieties.Theymustbequarantined（隔離）beforetheycanbegrown.Why?Cocoaproductionhitarecordhighof4.4milliontonslastyearbutabout30%ofthepreciouscropisregularlylosttopestsanddiseases.Nowwedon'twantthat,dowe?Demandforchocolatehasbeenincreasingfasterthantheworldsupplyofthenewcropssince1985,researchersthinkthatnewvarietiesarekeytosolvingthisproblem.TheUniversityofReadinghasbeenprotectingthequalityofthenewcropssince1985,afterittookoverthetaskfromtheRoyalBotanicGardensinKew,London.Andithasimproveditsfacilities.Theleaderoftheinstitution'scocoaproject,ProfessorPaulHadley,says,“Oneofthemainissuesconcerningcocoaimprovementisthesupplyofreliablyclean,healthy,increasingcocoamaterial.”Thecocoacentrehasacollectionof3plantvarietiesandtheirgreen-houseusesalotofenergytokeepthemintropicalconditions.Afteruptotwoyearsinquarantine,cleanandsafeseedsaresenttosome20countries,includingseveralinWestAfrica.That'swhere75%ofthecocoausedforchocolateworldwidecomesfrom.Thecropisextremelyimportantforthelocaleconomy:itemploysabouttwomillionpeople.ProfessorHadleysaysheworkswithasmallteamofskilledtechnicianswholookafterthecollection.Andmoreofusseemtocountonthemnow.Thescientistsays,“thereissomeconcernwithintheindustrythatdemandisincreasingconstantly,particularlyincountrieslikeChina,wherethestandardoflivingisincreasingandpeoplearegettingatastefordifferentchocolate."1、Whatisthetextmainlyabout?A．Safeguardingcocoa. B．Plantingcocoaworldwide.C．Keepingcocoaingreenhouse. D．Findingthenewmarketforcocoa.2、Theinstitution'scocoaprojectisto_______.A．havecocoaskinremoved B．offermorejobstopeopleC．ensurethequalityofcocoa D．supplycocoafortwomillionpeople3、Whatdoesthelastparagraphtellus?A．Thetasteofchocolateischanging.B．Demandforcocoaisincreasingfast.C．Peopleareconcernedaboutcocoavarieties.D．Chinesehavealonghistoryofeatingchocolate.4、What'sthepurposeofthetext?A．Toeducate. B．Toadvertise.C．Towarn. D．Toinform.22．（8分）AnArizonamomsaysnoneofherson'skindergartenfriendsshoweduptohisbirthdaypartyaftershesent32invitationstohisclassmates.Theboy,Teddy,heldabirthdaypartyonSundayatPeterPiperPizzainTucson,whereheandhismother,SilMazzini,hadbeenexpectingdozensoflittlegirlsandboys—aswellasthechildren'sparents—tojointhemattherestaurant.Mazzinisaidafewpeopletoldherinadvancethattheycouldn'tmakeit,butshewasn'tpreparedforeveryonetobeno-shows.MazzinisharedaphotoofhersonsittingaloneinfrontofseveralpizzasonherFacebookpage.Thatbroughtdozensanddozensofbirthdaywishesfromaroundthecountry,aswellasothergiftsandoffers."IlivenearTampa,Florida,andheardaboutyouviamylocalnews,"onewomanwroteonFacebook."IhopeyouhaveawonderfulyearandI'msendingyouabighug."ThebiggestunexpectedbirthdaypresentforTeddycamefromthePhoenixSuns,whoinvitedhimtowatchWednesdaynight'sgameattheTalkingStickResortArenaagainsttheLosAngelesLakersandLeBronJames.Thecity'sprofessionalsoccerclub,thePhoenixRising,alsoinvitedTeddyto"join7,000ofhisclosestfriends"ataplayoffgameonFriday.ButsomeonsocialmediaquestionedMazzini'sdecisiontobroadcastherson'shumiliatingday."Quick!Someonecallthenews.Don'tembarrassthiskidevenmorethanhealreadyis,"onewomanwroteonFacebook."Goodlord.Thisissowrong."1、HowmayTeddyfeelabouthisbirthdayparty?A．Relaxed. B．Disturbed. C．Disappointed. D．Bored.2、WhatdidthePhoenixSunsinviteTeddytodo?A．PlayaplayoffgameonFriday.B．WatchWednesdaynight'sgame.C．Jointheprofessionalsoccerclub.D．Spendaweekendwiththem3、WhatcanweinferaboutSilMazzinifromthelastparagraph?A．Sheisnotsupportedbyallthepeople.B．Shecareslittleaboutherson'sfeelings.C．Sheregretshavingpostedherson'simages.D．ShehasremovedthecommentsonFaceloook.23．（8分）TheinfluenceofAmericaisincreasinginmycountry.SpanishpeopledrinkCocaCola,wearbluejeans,watchHollywoodmovies,listentoAmericanmusic,andeatfastfood,andtheydothesethingseveryday.IthinkthatAmericanmoviesareagoodwaytospreadAmericanculturebecausepeopleareofteninfluencedbywhattheyseeinthemovies.Mostoftheprogramsanddocumentaries(記錄片)wewatchonTVarefromAmerica,andmostofthemovieswegotoseearemadeinHollywood.Inthelastfewyears,thegovernmenthastriedtoprotecttheSpanishmovies.Now,inourcinemas,atleasttwentypercentofthemovieswhichareshownmustbefromSpainorfromothercountriesinEurope.AmericancultureisapartofSpanishlifenow.It’scertainthatmanythingsfromAmericaareasmuchapartofpeople’slivesasSpanishthings.Forexample,CocaColaisasfamiliartoeverybodyasanytypicalSpanishproduct.I’veknownaboutCocaColaformywholelife.However,it’sdifferentwithWesternfastfood.Forexample,Idon’tthinkMcDonald’sisassuccessfulinSpainasitisinothercountries.Inmyopinion,oneofthereasonsmaybethelifestyleoftheSpanishpeople,TheSpanishpeoplenormallyeatathome.Ontheotherhand,maybeMcDonald’shamburgerswilleventuallyreplacethefamousSpanishtapas.It’struethatineverycityinSpainyoucanfindaMcDonald’s,anditismorepopularamongtheSpanishchildrenthanamongtheadults.Inanycase,it’sobviousthatAmericancultureisbecomingmoreandmoreapartofourliveseveryday.1、Fromthefirstparagraphwecanknowthat.A．theinfluenceofAmericaonSpaincanbefoundeverywhere.B．mostSpanishpeopledon’tliketolistentotheirownmusic,C．fastfoodspreadsfromSpaintotheUnitedStates.D．someSpanishactorsgotoAmericatoimprovetheiractingskills.2、WhatplaysanimportantpartinthespreadingofAmericancultureinSpain?A．Americannovels. B．Hollywoodmovies.C．McDonald. D．Americanmusic.3、WhydidthegovernmentsetsomerulesforthefilmsshowninSpain?A．ToprotectforeigncultureinSpain.B．ToearnmoremoneyfromSpanishfilms.C．Tolimitthenumberofforeignmovie.D．TouniteEuropeanCommunities.4、WhatdoyouthinkSpanishtapasmightbe?A．Thenameofadrink. B．Thenameofarestaurant.C．Aclothingbrand. D．Acertainkindoffood.24．（8分）Aboutsixmonthsago,IwasworkinginajobwhereIsatatacomputerinanofficefor50orsohourseachweek.Mybestfriend,Dusty,alsosatinanofficeatacomputerallday.Weoftentalkedaboutwhatawasteitseemedtobe,spendingourtimeinsideinfrontofacomputeralldaylong.Iendedupleavingmyjob,andsodidDusty.Neitheroneofusaresittinginanofficeallday.Lastweek,Dustycametomyhomeanddeclared,“I’mgoingtotravel.”O(jiān)fcourse,travelingisexciting.It’sgettingtoexperiencenewthings,gettingtobeaslightlydifferentversionofourselves,butIthinkthepointismoreaboutthemindset(心態(tài))thatitallowsforthantheactualrealitythatcomeswithit.Wakingupeverydaywithasenseofexcitementfortheunknown.Approachingeachinteractionduringthedaywithasenseofwonder.Notthinkingaboutyesterdayortomorrow,andjustaboutwhatever’srightinfrontyou.However,thethingis,wedon’tneedtobeintransittobeabletoapproachourdaysthisway.Itispossibleformetobelivingmynormallifeandbeexcitedfortheunknownoftheday.Imeetnewpeopleanddonewthingseveryday.Yes,theymightbeinSantaMonica,afewblocksfrommyapartment,butwhat’sthedifferencebetweenanewpersonhereandnewpersoninAustralia?IreadanAlanWattsquoterecently,anditgoesasfollows:“IfIaskyouwhatyoudid,saw,heard,smelled,touchedandtastedyesterday,Iamlikelytogetnothingmorethanthethin,sketchyoutlineofthefewthingsthatyounoticed,andofthoseonlywhatyouthoughtworthremembering.Butsupposeyoucouldanswer,‘Itwouldtakemeforevertotellyou,andIammuchtoointerestedinwhat’shappeningnow.’”O(jiān)negenerationseemstobeeagertoexpandourhorizons(視野).ButIagreewithAlanWatts.Thereisalotofopportunityforhorizon-expansionwhereverwehappentobe.IthinkI’llwakeuptomorrow,walkdownthestreet,andputonmyadventurer’scap.1、Accordingtothetext,theauthorquithisjobmainlybecause_________.A．itdidn’tpayverywellB．DustyadvisedhimtodosoC．hewantedtospendsometimetravelingD．hedidn’twanttostayinsidealldaylong2、What’sthesecondparagraphmainlyabout?A．Whatmakestravelingsoattractive.B．Whatismostimportantwhentraveling.C．Howtofindanewversionofourselves.D．Howtospendanunforgettableholiday.3、Theunderlinedwords“intransit”inthethirdparagraphprobablymean________.A．movingaround B．workinghardC．filledwithcuriosity D．fullofenthusiasm4、What’sthebesttitleforthetext?A．AnexcitingbutnormallifeB．AdventuresinourownbackyardC．GototravelandexpandyourhorizonD．Getoutsideandexplorefortheunknown25．（10分）Thedaysofhavingtocarryaphonechargereverywherecouldsoonbeover.Michiganresearchershaverevealedamajorbreakthroughinharvestingenergyfromhumanmotion.Theysayitcouldleadtosmartphonespoweredforaweekbythemotionofaswipe(重?fù)?.MichiganStateUniversity’slow-costdevice,knownasananogenerator,hasalreadybeentested.ScientistssuccessfullyoperatedanLCDtouchscreen,abankof20LEDlightsandaflexiblekeyboard,allwithasimpletouchingorpressingmotionandwithouttheaidofabattery.Thegroundbreakingfindings,publishedinthejournalNanoEnergy,suggest“We’reonthepathtowardwearabledevicespoweredbyhumanmotion,”saidNelsonSepulveda,associateprofessorofelectricalandcomputerengineeringandleadresearcheroftheproject.“WhatIforesee,relativelysoon,isthecapabilityofnothavingtochargeyourcellphoneforanentireweek,forexample,becausethatenergywillbeproducedbyyourmovement,”saidSepulveda,whoseresearchisfundedbytheNationalScienceFoundation.Electricalenergyiscreatedwhenthedeviceiscompressedbyhumanmotion.Thecompleteddeviceisasthinasasheetofpaper.ThedeviceusedtopowertheLEDlightswaspalm-sized,whilethedeviceusedtopowerthetouchscreenwasassmallasafinger.Advantagessuchasbeinglightweight,flexibleandlow-costcouldmakeitapromisingandalternativemethodinthefieldofMechanical-energyharvesting.Thedevicealsobecomesmorepowerfulwhenfolded.Sepulvedasaid,“Youcanstartwithalargedevice,butwhenyoufolditonce,andagain,andagain,it’smuchsmallerandhasmoreenergy.Nowitmaybesmallenoughtoputinaspeciallymadeheelofyourshoesoitcreatespowereachtimeyourheelstrikestheground.”Sepulvedaandhisteamarealsodevelopingtechnologythatwouldtransmitthepowergeneratedbytheheelstriketo,say,awirelessheadset.1、WhoisNelsonSepulveda?A．Themajorresearcherintheproject.B．Aprofessorofengineering.C．Thefundsupplieroftheresearch.D．AjournalistwritingforNanoEnergy.2、Theunderlinedworddeviceinthe2ndparagraphisclosestinmeaningto________.A．keyboardB．smartphoneC．screenD．machine3、Fromthepassageweknowthatthenanogenerator________.A．becomesmorepowerfulwhenkeptflatB．hasalreadycomeintomarketintheUSAC．islightweightandflexiblethoughexpensiveD．makesitpossibletoproducepowerbywalking4、Thepurposeofthepassageisto________.A．persuadepeopletobuythedeviceB．bringinanewwaytosaveenergyC．introduceabreakthroughinscienceD．honorNelsonSepulvedaforhiscontributions第三部分語言知識運(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）完形填空閱讀下面短文，從短文后各題所給的四個(gè)選項(xiàng)(A、B、C和D)中，選出可以填入空白處的最佳選項(xiàng)，并在答題卡上將該項(xiàng)涂黑。My12-year-olddaughter，Lauren，camehomefromschoolyesterday．She1wavedhergradebooktome．Shehadbeen2A-1inmostsubjectssuchasmathematics，languageartsandscience—agreat3!ThenshesadlypointedoutthatherperfectscorewasdamagedbyaB-1in4andaC-1inPlaysicalEducation．Iaskedherwhatthescores5．Shesaidthatthe6showedtheachievementandthenumbershowedtheeffort．ThatmomentI7thatthegradesweremisleading．Ireachedoutmyhandsandgaveherabig8andtoldherinmymindshehadaperfectscore．Itdidn’t9thathergradeinFrenchwasa“B”—“l(fā)”10thatshehadtriedherbest．Thatissomethingtomakeanyparentproud．Everybodyis11．Everybodyhasdifferentpotential．Notallofuswillbecomescientistsorsports12．Butwithout100％effortno13canbeachieved．IfIseeasalespersonfailatsales，the14thingIwanttoexamineistheeffortbeingputin．Ifthereisaproblemwith15，thesalespersonhasnofuture．ButifIseeasalespersonisn’t16withl00％effort，heorsheisworthmyeffortinhelping．Maybeabitoftrainingorsome17fromamoresuccessfulpersonwill18．Iknowthat100％effort，focusintherightdirection，willalwaysbringa19whetherthatisan“A”ora“C”．Aslongasyoumake100％effort，youare20．1、A．seriouslyB．patientlyC．cautiouslyD．proudly2、A．handedB．a(chǎn)wardedC．sentD．promised3、A．favorB．reliefC．1essonD．a(chǎn)chievement4、A．PoliticsB．EnglishC．FrenchD．Science5、A．neededB．a(chǎn)ttractedC．a(chǎn)ffectedD．meant6、A．scoreB．1etterC．figureD．word7、A．realizedB．checkedC．recognizedD．remembered8、A．hugB．shakeC．kissD．smile9、A．botherB．workC．matterD．suffer10、A．saidB．showedC．warnedD．included11、A．energeticB．independentC．differentD．curious12、A．trainersB．salesmenC．fansD．stars13、A．safetyB．principleC．experienceD．potential14、A．1astB．firstC．bestD．1atest15、A．a(chǎn)mbitionB．confidenceC．effortD．a(chǎn)ttitude16、A．cheerfulB．carefulC．successfulD．hopeful17、A．a(chǎn)dviceB．moneyC．expectationD．protection18、A．helpB．decideC．a(chǎn)ppearD．match19、A．competitionB．resultC．taskD．choice20、A．greatB．diligentC．famousD．Reliable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~或括號內(nèi)單詞的正確形式。27．（15分）Throughoutmodernhistory,perhapstherehasneverbeenascientistasiconic(偶像的)asStephenHawking.Whetherhe1．(educate)theworldwithhisknowledgeoftheuniverse,ormakingfunofhimselfinTVshows,itishardtoimaginewhattheworldwillbelikenowHawkingisnolongerin.OnMarch14,2018,theBritishphysicistpassedawayinCambridge.Sincethen,manypeoplehaveexpressedtheircondolences(哀悼)onsocialmedia,includingBritishcomputerscientistTimBerners-Lee,2．inventedtheWorldWideWeb.“Wehavelostagreatmindandawonderfulspirit,”Berners-Leewrote.Hawkingwasaniconformanyreasons,buthewillbebestremembered3．hisworkinthefieldofscience.BuildingonGermanscientistAlbertEinstein’swork,Hawkingexplainedhisbeliefthatspace4．(start)withtheBigBang,andwillendwithblackholes.“Thiscompletesetoflawscangiveusthe5．(answer)toquestionslike‘Howdidtheuniversebegin?’”Hawkingwroteinhis2010workTheGrandDesign.“Whereisitgoingandwillithaveanend?Ifso,howwillitend?”Besideshisworkinscience,healsomanagedtoovercomemanydifficultiesinhispersonallife.While6．(study)atCambridgeUniversity,hewasdiagnosedwithmotorneuron(運(yùn)動(dòng)神經(jīng)元)diseaseattheageof21.His7．(ill)lefthimparalyzedandhewastoldheonlyhadashorttimetolive.However,hewentontobecomeoneofthe8．(great)mindstheworldhaseverknown.“Ifeltitwasunfair.Whyshouldthishappentome?”heoncerecalled.“Atthetime,IthoughtmylifewasoverandthatIwouldneverrealizethepotentialIfeltIhad.Butnow,50yearslater,Icanbesatisfiedwithmylife.”Hawkingleftbehindagreatlegacy(遺產(chǎn)).HissignaturebookABriefHistoryofTime:FromtheBigBangtoBlackHoles,9．(publish)in1988,becameoneoftheworld’sbest-sellingsciencepublications.Andin2014,UKactorEddieRedmayneplayedHawkinginthemovieTheTheoryofEverything,whichtellsthetaleofthephysicist’slife.Hemaynolongerbewithus,10．Hawkingwillcontinuetoinspiretheworldforgenerationstocome.Asheoncesaidhimself,“Lookupatthestarsandnotdownatyourfeet!”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）假定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)漏字符號（∧），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；只允許修改10處，多者（從第11處起）不計(jì)分。DearJack,I’msorrytohearthatyoufeellonelyinthenewschool,becauseyoufindhardtomakefriends、Now,I’dliketoofferyouanyadvice、Firstly,it’snormalforyoutofeellonelybecauseyouwerelivinginanewenvironment、Secondly,youshouldgreetyourclassmateswhenmetthemoncampus、Thirdly,itwillbeagoodideaifyoutakeanactivelypartinclassactivities,whatcanhelpthemlearnmoreaboutyou、Ibelieveyouwillbeabletomakenewfriendssoonunlessyou’refriendlytotheothers、Ihopethesuggestionabovewillbehelpfultoyouandeverythingwillbefinewithyouforthefuture、Yours,LiHua第二節(jié)書面表達(dá)（滿分25分）29．（25分）請觀察所給的圖畫，并根據(jù)你對該圖畫的理解寫一篇英語短文，內(nèi)容包括：1.簡要描述圖片，并說明該圖片所揭露的現(xiàn)象；2.分析造成該現(xiàn)象的原因(至少兩點(diǎn))；3.提出自己的看法。注意：1.詞數(shù)100左右；2.開頭已給出，不計(jì)入總詞數(shù)。TheInternethaslongbeenregardedasawonderfultoolthatallowsstudentstogaininsighttouseful