2025年山東省青島市青島大附屬中學七下英語期末考試試題滿分120分，時間90分鐘一、完形填空(10分)1、longtimeagotherelivedayounggirlnamedMulan.Ataveryyoungage,herfather____1____hertouseasword(劍)andrideahorsewhichwasmostunusualbecauseonlyboyslearnedtofightandride,notgirls.Oneday,soldiers(士兵)cametoMulan’s____2____.Theytoldthepeoplethatonemanfromeachfamilymustjointhearmy(參軍)to____3____theircountry.Mulan’sfatherwastoooldtofight.Mulanhadno____4____brotherandherbabybrotherwastooyoungtobeasoldier.Mulanknewherfatherwouldlosehislifeifhewenttowar(戰爭)。“Girlsdidnotfightinwars.IfonlyIwereaboy,itwouldbesoeasy.“Mulansaidto____5____.Thenshethoughtofan____6____.Thatdaysheboughtahorseinthemarket.Thenextmorning,Mulandressedup____7____amanandbecameasoldierinsteadofherfather.Yearafteryear,Mulanfoughtwithhercomrade-in-arms(戰友).Inallthattime,____8____knewthatMulanwasawoman.Shegotlotsofawardsbecauseshewas____9____enoughtofightinfrontofothers.Afterthewar,thekingwantedtogiveherlotsofmoneyandevenagoodjob.ButMulanonlyaskedforagoodhorse____10____shehopedtogobackhometomeetherparentsquickly.Herfamilywereall____11____toseeher.Herbrothergrewintoafineyoungman.Hewasbusykillingpigsandsheepto____12____hersisterwhenshegothome.Thepeopleinherhometownalsohadabig____13____tocelebrate.Mulandressedherselfinwomen’sclothes,sanganddancedhappily.Tillthenhercomrade-in-arms____14____thatMulanwasaprettyyoungwoman.Soon,people____15____thecountryknewthestoryofMulanandshebecametheheroofthewholecountry.1.A.made B.stopped C.taught D.invited2.A.field B.hometown C.garden D.country3.A.protect B.hurt C.share D.raise4.A.bigger B.younger C.taller D.elder5.A.her B.herself C.him D.himself6.A.office B.idea C.engineer D.ability7.A.for B.in C.as D.on8.A.everybody B.somebody C.anybody D.nobody9.A.brave B.lazy C.careful D.honest10.A.before B.when C.because D.after11.A.angry B.happy C.sad D.interested12.A.follow B.help C.welcome D.test13.A.look B.talk C.problem D.party14.A.found B.agreed C.guessed D.decided15.A.around B.towards C.about D.into二、閱讀理解（40分）2、Animalsareimportanttousandtheyareourfriends.Butsomeofthemareingreatdangernow.Whatcanwedotohelpsavethem?Don’teatwildanimals’meat.Someofusliketoeatmeat.Butdoyouknowsomemeatcomesfromendangered(瀕危的)animals?Tosaveanimals,don’teattheirmeat.Andit’shealthyforus,too.Don’twearclothesmadeoffur(毛皮).Sometimespeoplekillanimalsforfur.Ifwedon’tbuyclothesmadeoffur,peoplewillnotkillanimals.PleasegiveawaymoneytoAnimalHelpers.Thegroupdoeseverythingtohelpsaveanimals.Butitoftenneedsmoney.Sosavesomemoneyandgiveitawaytothegrouptohelpanimals.Tellpeoplethatit’simportanttosaveanimals.Notallpeopleknowanimalsareourfriendsandthatwemustsavethem.Sowhynottellpeoplearoundusthatit’simportanttosaveanimals?Doyouhaveanyothergoodwaystohelpsaveanimals?Writetotellus.1.Howmanywaystosaveanimalsarethereinthepassage?A.Three. B.Four. C.Five. D.Six.2.Theunderlinedphrase“giveaway”means“________”inChinese.A.提取 B.丟棄 C.儲存 D.捐贈3.Whatcanyoudotohelpsaveanimalsifyouhavemuchmoney?A.Getsomemeattoeat. B.Buyclothesmadeoffur.C.Giveawaysomemoney. D.Keepsomedangerousanimals.4.Fromthepassage,weCANNOTknow________.A.someanimalsaroundusareingreatdangerB.someanimalsarenotfriendlytopeopleC.AnimalHelperscanhelpsaveanimalsD.someofusdon’tknowit’simportanttosaveanimals5.Whatisthebesttitleforthepassage?A.Howtohelpsaveanimals.B.WhattodoforAnimalHelpers.C.Whentohelpsaveanimals.D.Wheretofindmanyanimals.3、閱讀下面短文，完成相關任務。Welcometoourneighborhood.Getaroundandyouwillloveit.IlivewithmyparentsandbrotherinabighouseonJoe’sStreet.Thestreetisnotverylong.Thereisabookstoreacrossfromourhouse.Ioftenbuybooksthere.IalsoliketogotothelibrarynearthebookstorebecauseIlikereadingverymuch.Thereisaparkbetweenthebookstoreandthelibrary.MybrotherSamandIoftenplayintheparkafterschool.Thesearemyfavoriteplacesinourneighborhood.SamandIareinthesameschool.Itisnotfarfromourhome.Weusuallywalkthereinthemorning.RayStreetinfrontoftheschoolisverybusy.Wehavetobecareful（小心的）whenwegotoschool.Ourschoolisverybigandthere’sasupermarket,abankandapostofficeinit.1.Whereisthebookstore?_________________________________2.Whatdothewriterandhisbrotheroftendoafterschool?_________________________________3.Whydotheyhavetobecarefulwhentheygotoschool?_________________________________4.將畫線的句子譯成漢語。_________________________________5.給短文擬一個恰當的英文標題。_________________________________4、WhenIwaseight,Igotabookaboutstars.Thatwasthebeginningofmylifetimehobby.Iusedtogooutsidewithmymumonclearnightsandlookatthesky.Itlookedlikeblackvelvet（天鵝絨）withamilliondiamonds（鉆石）onit.Indifferentseasonswesawdifferentgroupsofstars.Sometimeswesawstarsshooting（射擊）brightlyacrossthesky.Howbeautifultheywere!Studyingthestarswasgreatfunforme.OnceIlearntalittleaboutthem,Isoonwantedtofindoutmoreandmore.Nowitismycareer（事業）.Ihost（主持）aTVprogramcalledTheSkyatNight.Iusemyknowledgetotellpeopleaboutthestarsinalivelyway.IamproudofmyTVprogram—ithaslasted（持續）formorethan50years!Infact,youcanturnyourhobbyintoyourcareer,too.Everybodycanmakehisdreamcometrue.Youmusthavetoenjoywhatyoudo!1.Whatdoestheunderlinedword“diamonds”referto（指的是）?A.Stars. B.Books. C.Blackvelvet. D.Hobbies.2.Wheredoesthewriterwork?A.Inthesky. B.Inthestars. C.AtaTVstation. D.Atamiddleschool.3.Howlonghasthewriterworkedfortheprogram?A.Foreightyears. B.Forabout50years.C.Foralifetime. D.Foroverhalfacentury（世紀）.5、配對閱讀。左欄是五個人的需求，右欄是七則與故事詩歌相關的信息，請為左欄的每個人選擇一則最合適的信息，并將答題卡上對應題目所選的選項涂黑。___1___Katewantstobuysomebookstoreadsothatshecanlearnmoreaboutpoems.___2___Mrs.Smithisgoingtosendherdaughtertotakesomelessonsonhistoryduringthecomingholiday.___3___MaryisgoingtobuysomeCDs.Shelikeslisteningtomusic.___4___Tonywantstopractice(練習)EnglishsothathecantellothersgoodChinesestoriesinEnglish.___5___Samlikesreadingpoems.Shewantstojoinsomeclubstoenjoyreadingtogether.A.Ourcity’sbiggestCDandDVDmarketisonRenminRoad.Comeandbuysomethingyouwant.B.BookBarisastore.Youcanfindallkindsofbooksaboutpoems.C.SunChildren’sCenterhasmanylessonsforyou.Thehistorylessonsherearegreatifyouwanttosendyourkidsforthesummerholiday.D.PoemDailyisanewspaperforpoemfans.Itincludesnews,stories,poemsandsoon.Keepreadingit,andyouwillknowmoreaboutpoems.E.StoryTellingClubhasmanygreatactivities.Youcantakeyourkidstojoininoursharingpartytogether.F.AirLanguageCenterisagoodplace.WecanhelpyoulearnChinesetraditionalstoriesinEnglish.G.PoemClubholdsareadingpartyeveryweek.Youcanshareyourfavoritepoemwithus.Wehaveforeignfriendsheretoo.三、補全對話（10分）6、根據對話內容，從選項中選出能填入空白處的最佳選擇，有一項為多余選項。Sam:Hi,Lily.____1____Lily:Yes,Idid.Ivisitedasmallvillage.Sam:Oh,great.____2____Lily:Itookabus.Thevillageisalittlefar.Sam:____3____Lily:Ofcourse,Iwentfishingintheriver.Ialsopickedsomepears.Theyweredelicious.Sam:Soundsinteresting._____4_____Lily:Itwascloudyandcool.Didyougoanywhere?Sam:Yes.Iwenttothezoo.Lily:Didyouseeanylions?Sam:No,Ididn’t._____5_____Theywerereallycute.Lily:Ithinkso.A.ButIsawpandasandmonkeys.B.Whatdidyoudothere?C.Howdidyougetthere?D.Didyouhavefuninthevillage?E.Didyouhaveatriplastmonth?F.Howwastheweatherthere?四、短文填空（10分）7、________________(事實上),it’snotdifficulttolearnEnglishwell.五、語法填空（10分）8、Lastweekend,Ihadacampingtripwithmyparents.Itwas____1____(cloud).Eachofusbroughtsomethingforthecamping.Mymombroughtsomehamburgers,mydadhadtheblankets(毯)andthecookingtools(工具),andIbroughtalargebowlofbeefnoodlesforbreakfast!Whenwe____2____(get)tothecampingplace,mydadtriedtoputuptentsfirst.Andwewenttolookforwood(木材).Thenwemadeafiretocookfood.Afterlunch,wetookarest.Andthenintheafternoon,wecaughtbutterflies,lookedforrare(稀有的)plantsinthewoodsandwentboatinginariveralongthehill.Thetimepassed____3____(quick).Wheneveningcame,wespentthenight____4____(take)arestinthetentsatthetopofthemountain.Ifellasleepwhenmyheadtouchedthepillow(枕頭)____5____Iwassotired.Thatwasthefirsttimewecamethere.Wehopetovisititagainoneday.六、閱讀表達（10分）9、請閱讀下面這篇文章，根據所提供的信息，回答5個問題。要求所寫的答案語法正確，語義完整。What’syourfavoritefoodorfruit?David:Iama13-year-oldboy.Idon’tlikevegetables.Mymomalwaysletsmeeatcarrots.Shesaystheyaregoodforme.ButIdon’tlikethem.Ionlyliketomatoes.MybrotherEriclikescarrots.EricandIhavemilkeveryday.Weloveit.Henry:Iama14-year-oldboy.Ilikehamburgers.Ieathamburgerseveryweek.Ialsolikechicken.Mygrandmaoftencookschickenforme.Ilikericeandchickenfordinner.Idon’tlikecarrots.Ilikefruit.Andmyfavouritefruitisgrape.Sarah:Iaman12-year-oldgirl.Ilikefruitandvegetables,andmyfamilylikethem,too.Andwelikeeatingfruitandvegetablesfromourgardens.Mymothersaystheyarehealthy.Myfatherlikeseatingchicken,butIdon’tlikeitatall.1.HowoldisDavid?______________________________________________2.WhatvegetabledoesDavidlike?______________________________________________3.WhooftencookschickenforHenry?______________________________________________4.WheredoSarah’sfamilygetfruitandvegetables?______________________________________________5.Howmanypeopledon’tlikecarrotsinthepassage?______________________________________________七、書面表達（20分）

“雙減”政策之后，同學們的社團活動越來越豐富。假如你是山河中學的李華，請你根據提示寫一篇短文，向學校英語報專欄MyAfter-schoolActivity投稿，介紹你所參加的社團活動。內容提示：1.參加的社團：太空社。2.參加社團的意義：學習了太空知識；培養了對太空的興趣；交到了朋友……3.未來的打算：繼續學習太空知識；愿意把愛好變成今后的事業。參考詞匯：develop培養要求：1.70詞左右，開頭已給出，不計入總詞數內；2.文中不得出現真實姓名和校名；3.可適當增加細節，以使條理清楚、行文連貫；4.標點正確，書面整潔。Underthe“doublereduction”policy,westudentshavemorefreetimetotakepartinafter-schoolactivities.____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

參考答案一、完形填空(10分)1、1.C2.B3.A4.D5.B6.B7.C8.D9.A10.C11.B12.C13.D14.A15.A【解析】【導語】本文講述了木蘭的故事。【1題詳解】句意：在很小的時候，她的父親教她使用劍和騎馬，這是最不尋常的，因為只有男孩學會了戰斗和騎馬，而不是女孩。made做；stopped停止；taught教；invited邀請。根據“herfather…hertouseasword(劍)andrideahorse”可知，她的父親教她使用劍和騎馬。故選C。【2題詳解】句意：一天，士兵們來到了木蘭的家鄉。field場地；hometown家鄉；garden花園；country國家。根據“Theytoldthepeoplethatonemanfromeachfamilymustjointhearmy”可知，士兵來到了他們的家鄉。故選B。【3題詳解】句意：他們告訴人們，每個家庭必須有一個人參軍來保衛他們的國家。protect保護；hurt傷害；share分享；raise提高。根據“Theytoldthepeoplethatonemanfromeachfamilymustjointhearmyto…theircountry.”可知，此處指“保衛國家”。故選A。【4題詳解】句意：木蘭沒有哥哥，她的小弟弟太小，不能當兵。bigger更大的；younger更年輕的；taller更高的；elder更年長的。根據“…herbabybrotherwastooyoungtobeasoldier”可知，此處指木蘭沒有哥哥。故選D。【5題詳解】句意：木蘭對她自己說。her她；herself她自己；him他；himself他自己。根據“IfonlyIwereaboy,itwouldbesoeasy.”可知，這是木蘭對自己說的話，木蘭是女的。故選B。【6題詳解】句意：然后她想到了一個主意。office辦公室；idea主意；engineer工程師；ability能力。根據“Thatdaysheboughtahorseinthemarket.Thenextmorning,Mulandressedup…amanandbecameasoldierinsteadofherfather.”可知，此處是想到了一個注意。故選B。【7題詳解】句意：第二天早上，木蘭打扮成男人，代替父親去當兵。for為了；in在……里面；as作為；on在……上面。dressupasaman意為“打扮成男人”。故選C。【8題詳解】句意：在這段時間里，沒有人知道木蘭是個女人。everybody每個人；somebody某人；anybody任何人；nobody沒有人。根據“dressedup…amanandbecameasoldierinsteadofherfather.”可知，沒有人知道木蘭是個女人。故選D。【9題詳解】句意：她獲得了很多獎勵，因為她足夠勇敢，敢于在別人面前戰斗。brave勇敢的；lazy懶惰的；careful仔細的；honest誠實的。根據“enoughtofightinfrontofothers.”可知，她足夠勇敢。故選A。【10題詳解】句意：但是木蘭只想要一匹好馬，因為她希望盡快回家見父母。before在……之前；when當……時候；because因為；after在……之后。根據“ButMulanonlyaskedforagoodhorse…shehopedtogobackhometomeetherparentsquickly.”可知，后句是原因，因此用連詞“because”。故選C。【11題詳解】句意：她的家人見到她都很高興。angry生氣的；happy開心的；sad傷心的；interested感興趣的。根據“Hewasbusykillingpigsandsheep”可知，她的家人見到她都很高興。故選B。【12題詳解】句意：當她姐姐回家時，他正忙著殺豬宰羊來迎接她。follow跟隨；help幫助；welcome歡迎；test測試。根據“whenshegothome”可知，此處指“迎接她的到來”。故選C。【13題詳解】。句意：她家鄉的人們也舉行了盛大的聚會來慶祝。look長相；talk談話；problem問題；party聚會。根據“tocelebrate”可知，此處指舉行了盛大的聚會。故選D。【14題詳解】句意：直到這時，她的戰友才發現木蘭是個年輕漂亮的女人。found發現；agreed同意；guessed猜；decided決定。根據“Tillthenhercomrade-in-arms…thatMulanwasaprettyyoungwoman.”可知，此處指“她的戰友才發現木蘭是個女人”。故選A。【15題詳解】句意：很快，全國人民都知道了木蘭的故事，她成了全國的英雄。around周圍；towards向；about關于；into進入。根據“thecountry”可知，此處是“全國人民”，用“around”。故選A。二、閱讀理解（40分）2、1.B2.D3.C4.B5.A【解析】【導語】本文是一篇說明文。文章對如何保護動物給出了建議：不吃野生動物的肉，不穿皮毛制品，捐錢給動物保護者以及向周圍人發出保護倡議。【1題詳解】細節理解題。根據材料“Don’teatwildanimals’meat”、“Don’twearclothesmadeoffur”、“PleasegiveawaymoneytoAnimalHelpers”和“Tellpeoplethatit’simportanttosaveanimals”可知共四條建議。故選B。【2題詳解】詞義猜測題。根據“Thegroupdoeseverythingtohelpsaveanimals.Butitoftenneedsmoney.Sosavesomemoneyandgiveitawaytothegrouptohelpanimals.”可知，動物救助者盡一切努力去拯救動物，但是他們經常需要錢，所以要捐錢給動物保護者，“giveaway”是“捐贈”的意思。故選D。【3題詳解】細節理解題。根據第四段“Sosavesomemoneyandgiveitawaytothegrouptohelpanimals.”可知，如果有很多錢，可以捐錢給動物保護者，故選C。【4題詳解】細節理解題。根據第一段“Butsomeofthemareingreatdangernow.”可知，一些動物處于危險中；根據第四段“Thegroupdoeseverythingtohelpsaveanimals.”可知，動物救助者會幫助拯救動物；根據第五段“Notallpeopleknowanimalsareourfriendsandthatwemustsavethem.”可知，并不是所有的人都知道動物是我們的朋友，我們必須拯救它們。因此我們無法從文中知道“有些動物對人不友好”。故選B。【5題詳解】最佳標題題。通讀全文可知，本文對如何保護動物給出了建議，由此可知選項A“如何幫助拯救動物”最適合作為本文的標題。故選A。3、1.Itisacrossfromthewriter’shouse.2.Theyoftenplayinthepark.3.BecauseRayStreetinfrontoftheschoolisverybusy.4.在書店和圖書館之間有一個公園。5.Ourneighborhood【解析】【導語】本文是一篇記敘文。作者主要介紹了他家附近的街區。【1題詳解】根據“Thereisabookstoreacrossfromourhouse.”可知，書店在作者家對面。故填Itisacrossfromthewriter’shouse.【2題詳解】根據“MybrotherSamandIoftenplayintheparkafterschool.”可知，他們經常放學后去公園玩耍。故填Theyoftenplayinthepark.【3題詳解】根據“RayStreetinfrontoftheschoolisverybusy.”可知，學校前面的街道非常的繁忙和擁擠，不太安全。故填BecauseRayStreetinfrontoftheschoolisverybusy.【4題詳解】分析句子可知，本句是一個陳述句。Therebe翻譯為“某地有某物”；apark翻譯為“一個公園”；betweenthebookstoreandthelibrary翻譯為“在書店和圖書館之間”。故填“在書店和圖書館之間有一個公園。”【5題詳解】根據“Welcometoourneighborhood.”可知，本文主要介紹了作者家附近的街區。故填Ourneighborhood。4、1.A2.C3.D【解析】【導語】本文是作者結合自身的經歷告訴讀者，每個人可以把你的愛好變成你的事業，都可以實現自己的夢想。【1題詳解】詞義猜測題。根據“WhenIwaseight,Igotabookaboutstars”及“Iusedtogooutsidewithmymumonclearnightsandlookatthesky.Itlookedlikeblackvelvet（天鵝絨）withamilliondiamonds（鉆石）onit.”可知，看著天空，星星看起來像黑色天鵝絨上面的鉆石，所以diamonds指代的是“星星”，故選A。【2題詳解】細節理解題。根據“Ihost（主持）aTVprogram”可知，作者在電視臺工作，故選C。【3題詳解】細節理解題。根據“IamproudofmyTVprogram—ithaslasted（持續）formorethan50years!”可知，已經持續了50多年了，故選D。5、1.B2.C3.A4.F5.G【解析】【導語】本文介紹了五個人的需求以及與故事詩歌相關的信息。【1題詳解】根據“Katewantstobuysomebookstoreadsothatshecanlearnmoreaboutpoems.”可知，凱特想買一些書來讀，這樣她就可以更多地了解詩歌。B項“書吧是一家商店。你可以找到各種各樣關于詩歌的書。”符合要求，故選B。【2題詳解】根據“Mrs.Smithisgoingtosendherdaughtertotakesomelessonsonhistoryduringthecomingholiday.”可知，史密斯太太打算在即將到來的假期里送她女兒去上歷史課。C項“太陽兒童中心有很多課程給你。如果你想送你的孩子去度假，這里的歷史課是很棒的。”符合要求，故選C。【3題詳解】根據“MaryisgoingtobuysomeCDs.Shelikeslisteningtomusic.”可知，瑪麗打算買一些CD。她喜歡聽音樂。A項“我市最大的CD和DVD市場在人民路。來買你想要的東西吧。”符合要求，故選A。【4題詳解】根據“Tonywantstopractice(練習)EnglishsothathecantellothersgoodChinesestoriesinEnglish.”可知，托尼想練習英語，這樣他就可以用英語給別人講好的中國故事。F項“空中語言中心是個好地方。我們可以幫助你用英語學習中國傳統故事。”符合要求，故選F。【5題詳解】根據“Samlikesreadingpoems.Shewantstojoinsomeclubstoenjoyreadingtogether.”可知，薩姆喜歡讀詩。她想加入一些俱樂部，一起享受閱讀的樂趣。G項“詩歌社每周舉行一次讀書會。你可以和我們分享你最喜歡的詩。我們這里也有外國朋友。”符合要求，故選G。三、補全對話（10分）6、1.E2.C3.B4.F5.A【解析】【導語】本文是Sam和Lily的對話，他們談論了彼此的旅程，Lily到一個村子里度假，Sam去動物園看熊貓和猴子。【1題詳解】根據下文“Yes,Idid.Ivisitedasmallvillage.”可知，此處應是一個一般疑問句，詢問關于旅行的話題。選項E“你上個月去旅行了嗎？”符合語境。故選E。【2題詳解】根據下文“Itookabus.Thevillageisalittlefar.”可知，此處應是詢問如何到達那個村子的。選項C“你是如何到達那里的？”符合語境。故選C。【3題詳解】根據下文“Ofcourse,Iwentfishingintheriver.Ialsopickedsomepears.Theyweredelicious.”可知，Lily介紹了在村子里所做的事情，此處應是詢問Lily做了什么。選項B“你在那里做了什么？”符合語境。故選B。【4題詳解】根據下一句“Itwascloudyandcool.”可知此處應是詢問天氣狀況如何。選項F“那里的天氣如何？”符合語境。故選F。【5題詳解】根據下一句“Theywerereallycute.”可知，它們真的很可愛，說明此處應是談論和動物相關的話題。選項A“但我看了熊貓和猴子。”符合語境。故選A。四、短文填空（10分）7、①.In②.fact【解析】【詳解】句意：事實上，學好英語并不難。由句意及語境可推測，本題考查infact“事實上”，開頭首字母需要大寫。故填In；fact。五、語法填空（10分）8、1.cloudy2.got3.quickly4.taking5.because【解析】【導語】本文講述了作者和他的父母去野營的經歷。【1題詳解】句意：天氣多云。根據“Itwas…”可知，此處用形容詞作表語，cloudy意為“多云的”。故填cloudy。【2題詳解】句意：當我們到達野營地時，我爸爸試圖先搭起帳篷。根據“mydadtriedtoputuptentsfirst.”可知，句子的時態是一般過去時，因此此處用動詞過去式，got意為“到達”。故填got。【3題詳解】句意：時間過得很快。根據“Thetimepassed…”可知，此處指的是“時間過得很快”，quickly意為“快速地”，副詞修飾動詞。故填quickly。【4題詳解】句意：夜幕降臨時，我們在山頂的帳篷里休息了一夜。spend+時間doingsth.意為“花時間做某事”，固定用法，因此此處用動詞ing形式。故填taking。【5題詳解】句意：因為太累了，頭一碰到枕頭就睡著了。根據“Iwassotired.”可知，此處是前句的原因，因此用because引導原因狀語從句。故填because。六、閱讀表達（10分）9、1.David/Heis13yearsold.2.David/Helikesto