2026年北京市第四中学七年级英语第7单元词汇测试卷及答案

2026年北京市第四中学七年级英语第7单元词汇测试卷及答案第1页共1页2026年北京市第四中学七年级英语第7单元词汇测试卷及答案一、单项选择题（共10小题，每题2分）（每小题只有一个选项符合题意，请把正确选项的字母填在题后括号内）1.WhatisthenameofthecapitalcityofFrance?A.LondonB.BerlinC.ParisD.Madrid参考答案：C2.Whichplanetisknownasthe"RedPlanet"?A.VenusB.MarsC.JupiterD.Saturn参考答案：B3.Whatisthesquarerootof64?A.6B.8C.10D.12参考答案：B4.Ifyouhave10applesandyougive3toyourfriend,howmanyapplesdoyouhaveleft?A.6B.7C.8D.9参考答案：A5.Whatistheresultof5multipliedby7?A.30B.35C.40D.45参考答案：B6.Whichofthefollowingisaprimenumber?A.4B.6C.8D.7参考答案：D7.WhatisthecapitalcityofJapan?A.SeoulB.TokyoC.BeijingD.Sydney参考答案：B8.Ifyouadd8to15,whatisthesum?A.22B.23C.24D.25参考答案：B9.Whatisthelargestplanetinoursolarsystem?A.EarthB.MarsC.JupiterD.Venus参考答案：C10.Whichofthefollowingisachemicalelement?A.OxygenB.GoldC.WaterD.Wood参考答案：A二、填空题（共10小题，每题2分）（请把正确答案直接填写在题中横线上，填写不完整的不得分）1.Myfavoritesportis______.参考答案：basketball2.Weoftenplaybasketball______.参考答案：intheafternoon3.Howoftendoyou______tothelibrary?参考答案：go4.She______Englisheveryday.参考答案：doesmysister5.______youlikewatchingTV?参考答案：Do6.Iusually______homeworkafterschool.参考答案：do7.Whattime______youusuallyhavelunch?参考答案：do8.They______goingtothezoonextSunday.参考答案：aregoingto9.Canyouswim?Yes,I______.参考答案：can10.What______youdolastweekend?参考答案：did三、判断题（共10小题，每题2分）（正确的打“√”，错误的打“×”，把判断符号填在题后括号内）1.TheweatherinLondonisusuallyrainyandfoggy.参考答案：√2.Myfavoriteseasonisautumnbecausetheleavesarecolorful.参考答案：√3.Iusuallygotobedatteno'clockintheevening.参考答案：×4.Swimmingisagoodwaytostayfitandhealthy.参考答案：√5.TheGreatWallisoneofthemostfamouslandmarksintheworld.参考答案：√6.Hikingisapopularactivityforpeoplewhoenjoybeingoutdoors.参考答案：√7.TheEiffelTowerisafamousbuildinginParis,France.参考答案：√8.TheMonaLisaisafamouspaintingbyLeonardodaVinci.参考答案：√9.TheAmazonRiveristhelongestriverinSouthAmerica.参考答案：×10.TheSaharaDesertisthelargesthotdesertintheworld.参考答案：×四、简答题（共8小题，每题2分）（请分点作答，语言简明、要点齐全，写在对应题目下方的横线上）1.PleasedescribethemainfeaturesoftheGreatWall.参考答案：TheGreatWallisasymbolofChinesecultureandhistory.ItisalongwallbuilttoprotectChinafrominvaders.TheGreatWallisverylongandrunsacrossnorthernChina.Itisalsoapopulartouristdestination.2.Howdoyouusuallyspendyourweekend?参考答案：Onweekends,Iusuallygotothelibrarytoreadbooks.Ialsospendtimewithmyfamily,watchingmovies,orplayingsports.3.Whatdoyouthinkisthemostimportantinventioninmodernhistory?参考答案：Themostimportantinventioninmodernhistoryistheinternet.Theinternethaschangedthewaywecommunicate,work,andaccessinformation.Itconnectspeoplearoundtheworldandhasmadelifeeasierandmoreconvenient.4.Canyoutellmeaboutafamousscientistandhiscontributiontoscience?参考答案：IcantellyouaboutAlbertEinstein.HewasafamousGermanscientist.Einsteinmademanyimportantcontributionstoscience,especiallyinthefieldofphysics.Histheoryofrelativitychangedourunderstandingofspaceandtime.HealsowontheNobelPrizeinPhysicsin1921.5.Describetheprocessofphotosynthesisinplants.参考答案：Photosynthesisistheprocessbywhichplantsmaketheirownfood.Ithappensintheleavesofplants.Duringphotosynthesis,plantsusesunlight,water,andcarbondioxidetomakeglucoseandoxygen.Glucoseisatypeofsugarthatplantsuseforenergy.Oxygenisreleasedintotheair.6.Whatarethemaincausesofpollutioninurbanareas?参考答案：Themaincausesofpollutioninurbanareasareindustrialemissions,vehicleexhaust,andwastedisposal.Industrialemissionscomefromfactoriesandpowerplants.Vehicleexhaustcomesfromcarsandtrucks.Wastedisposalproblemsincludeimpropergarbagecollectionandrecycling.7.Howcanweprotectendangeredspecies?参考答案：Toprotectendangeredspecies,wecantakeseveralactions.First,weshouldcreateprotectedareaswhereanimalsandplantscanlivesafely.Second,weshouldreducepollutionandhabitatdestruction.Third,weshouldeducatepeopleabouttheimportanceofprotectingendangeredspecies.Finally,weshouldsupportlawsandpoliciesthathelpprotectthesespecies.8.Explaintheconceptofrenewableenergy.参考答案：Renewableenergyisenergythatcomesfromnaturalsourcesthatarereplenishedconstantly.Examplesofrenewableenergyincludesolarenergy,windenergy,andhydroelectricpower.Renewableenergyisimportantbecauseitiscleananddoesnotproducepollution.Italsohelpstoreduceourdependenceonfossilfuels.五、应用题（共8小题，每题3分）（请写出必要的文字说明、方程式和重要的演算步骤，只写最后结果不得分）1.YourschoolisgoingtoholdaEnglishspeechcontest.Youareinterestedintakingpartinit.Writeashortspeechofabout60words,introducingyourselfandtellingwhyyoulikeEnglish.A.Helloeveryone.MynameisLiHua.Iam13yearsold.IlikeEnglishbecauseitisveryinteresting.Icanlearnaboutdifferentculturesandmakemorefriends.IhopeIcanimprovemyEnglishinthecontest.B.Hi,I’mWangMing.IamfromClass7.IenjoyEnglishbecauseithelpsmecommunicatewithpeoplearoundtheworld.Iwillworkhardforthecontest.C.Goodmorning.I’mZhangFang.Englishismyfavoritesubject.IlikereadingEnglishbooksandwatchingEnglishmovies.Let’senjoythecontesttogether.D.Hello.MynameisLiuTao.IthinkEnglishisimportantforourfuture.Iwilltrymybesttowintheprize.参考答案：A2.YourfriendTomisgoingtovisitBeijingnextmonth.Hewritesalettertoyouaskingforsomeadviceabouttraveling.Writeareplyofabout60words,givinghimsomesuggestions.A.HiTom,I’mgladtohearyouarecomingtoBeijing.IsuggestyouvisittheGreatWallandtheForbiddenCity.Theyareveryfamous.Youcanalsotrysomelocalfood.Haveagoodtrip!B.HelloTom,Beijingisawonderfulcity.YoushouldgototheSummerPalaceandtheNationalMuseum.Theyareinteresting.Don’tforgettotakephotos.Ihopeyouenjoyyourtrip.C.HiTom,Ithinkyoushouldstayinhotel.It’sconvenient.Youcanvisitmanyplacesbybus.Becarefulontheroad.Haveanicejourney!D.HelloTom,IsuggestyougototheOlympicPark.It’smodern.YoucanseetheBird’sNestandtheWaterCube.Theyareamazing.Haveagoodtime!参考答案：A3.YourEnglishteacherasksyoutomakeapostertopromotetheEnglishCornerinyourschool.Writeaposterofabout50words,tellingstudentswhenandwhereitwillbeheldandwhattheycandothere.A.Attention,everyone!TheEnglishCornerwillbeheldeveryFridayafternoonintheschoolhall.It’sagoodchancetopracticeEnglish.Comeandjoinus!B.Hello,students!TheEnglishCornerisontheplaygroundeverySaturday.Youcantalkwithyourteachersandfriends.It’sfun.Don’tmissit!C.Hi,everyone!TheEnglishCornerstartsat4:00p.m.everyWednesdayinthelibrary.YoucanreadEnglishbooksandlistentoEnglishsongs.It’shelpful.Comeandsee!D.Attention!TheEnglishCornerwillbeheldintheclassroomeveryThursday.Youcanplaygamesandmakefriends.It’sinteresting.Joinus!参考答案：A4.Yourschoolisgoingtoorganizeacharitysaletohelppoorchildren.Writeanoticeofabout60words,tellingstudentswhenandwherethesalewillbeheldandwhattheycando.A.Notice:AcharitysalewillbeheldintheschoolhallnextSaturdayfrom8:00a.m.to5:00p.m.Allstudentsarewelcometojoin.Youcanbringsomeusedbooks,clothesortoystosell.Themoneywillbeusedtohelppoorchildren.Let’sdosomethinggood!B.Announcement:ThecharitysalewillbeheldintheplaygroundthisSundayfrom9:00a.m.to12:00p.m.Studentscanselltheirunwantedthings.Allthemoneywillgotothepoorchildren.Pleasecomeandsupportus!C.Notice:AcharitysalewillbeheldinthelibrarynextFridayfrom3:00p.m.to6:00p.m.Studentscanbringsomegoodstosell.Thesaleisforpoorchildren.Let’shelpthem!D.Announcement:ThecharitysalewillbeheldinthegymnasiumthisSaturdayfrom10:00a.m.to3:00p.m.Allstudentsareencouragedtoparticipate.Youcansellyouroldthings.Themoneywillhelppoorchildren.Joinus!参考答案：A5.Yourfriendisinterestedinlearningtoplaythepiano.Writeashortemailofabout60words,givinghimsomeadvice.A.Hi,I’mgladtohearyouwanttolearnthepiano.It’sawonderfulinstrument.Isuggestyoufindagoodteacher.Youshouldpracticeeveryday.Ittakestimeandpatience.Ithinkyouwillsucceed.B.Hello,Ithinklearningthepianoisagreatidea.Youcantakelessonsatamusicschool.Youshouldpracticeregularly.Don’tgiveup.Ibelieveyoucanplaywell.C.Hi,I’mexcitedaboutyourdecisiontolearnthepiano.Youshouldbuyapianofirst.Thenyoucanpracticeathome.It’sfun.Youwillenjoyit.D.Hello,Ithinkyoushouldtryotherinstrumentsfirst.Thepianoisdifficult.Youcantrytheguitarortheviolin.Theyareeasier.Maybeyouwilllikethemmore.参考答案：A6.Yourschoolisgoingtohaveasportsmeetnextmonth.Writeashortarticleofabout80words,tellingstudentsthedatesofthemeetandwhateventstherewillbe.A.Goodnews!Ourschoolwillhaveasportsmeetnextmonth.ItwillbeheldfromOctober20thtoOctober25th.Therewillbemanyevents,suchasrunning,jumping,andthrowing.Allstudentsarewelcometoparticipate.Let’sshowoursportsspirit!B.Attention!Thesportsmeetwillbeheldnextmonth.ItstartsonOctober20thandendsonOctober25th.Therewillbemanyinterestingevents,suchas100-meterdash,highjump,andshotput.Studentscansignupfortheevents.Let’senjoythemeet!C.Announcement:Ourschoolwillhaveasportsmeetnextmonth.ItwillbefromOctober21sttoOctober26th.Therewillbemanycompetitions,suchas200-meterrun,longjump,anddiscusthrow.Allstudentsareencouragedtojoin.Let’shaveagreattime!D.Goodnews!Thesportsmeetwillbeheldnextmonth.ItstartsonOctober22ndandendsonOctober27th.Therewillbemanyevents,suchas400-meterrun,triplejump,andjavelinthrow.Studentscansignupfortheevents.Let’smakeourschoolproud!参考答案：A7.YourfriendisgoingtotraveltoLondonnextyear.Writeashortletterofabout80words,givinghimsomeadviceabouttravelingthere.A.Hi,I’mgladtohearyouaregoingtotraveltoLondon.It’sabeautifulcity.IsuggestyouvisittheTowerofLondonandtheBritishMuseum.Theyareveryfamous.YoucanalsotrysomeBritishfood.Haveagoodtrip!B.Hello,Londonisawonderfulcity.YoushouldgototheBigBenandtheLondonEye.Theyareinteresting.Youcanalsovisittheparks.Theyarebeautiful.Haveanicejourney!C.Hi,Ithinkyoushouldstayinahotel.It’sconvenient.Youcanvisitmanyplacesbypublictransport.Becarefulontheroad.Haveagoodtime!D.Hello,IsuggestyougototheOxfordStreet.It’sashoppingstreet.Youcanbuymanythings.Youcanalsovisitthemuseums.Theyareamazing.Haveagoodtime!参考答案：A8.YourschoolisgoingtoholdaEnglishfilmfestivalnextmonth.Writeashortreportofabout100words,tellingstudentsthedatesofthefestivalandwhatfilmswillbeshown.A.Goodnews!OurschoolwillholdanEnglishfilmfestivalnextmonth.ItwillbeheldfromNovember10thtoNovember15th.TherewillbemanyEnglishfilmsshown,suchas“HarryPotter”,“TheLordoftheRings”,and“StarWars”.Allstudentsarewelcometowatch.Let’senjoythefilms!B.Attention!TheEnglishfilmfestivalwillbeheldnextmonth.ItstartsonNovember10thandendsonNovember15th.Therewillbemanyinterestingfilmsshown,suchas“TheAvengers”,“Avengers:Endgame”,and“CivilWar”.Studentscangotothecinemahall.Let’shaveagoodtime!C.Announcement:OurschoolwillholdanEnglishfilmfestivalnextmonth.ItwillbefromNovember11thtoNovember16th.Therewillbemanyfilmsshown,suchas“Titanic”,“Avatar”,and“TheLionKing”.Allstudentsareencouragedtojoin.Let’senjoythefilms!D.Goodnews!TheEnglishfilmfestivalwillbeheldnextmonth.ItstartsonNovember12thandendsonNovember17th.Therewillbemanyfilmsshown,suchas“Inception”,“Interstellar”,and“TheMatrix”.Studentscansignupforthetickets.Let’shaveagreattime!参考答案：A标准答案与解析一、单项选择题1.参考答案：C解析：本题考查地理常识。法国的首都是巴黎，因此正确答案是C。其他选项都是其他国家的首都，伦敦是英国的首都，柏林是德国的首都，马德里是西班牙的首都。2.参考答案：B解析：本题考查天文学常识。火星被称为“红色星球”，因为其表面呈现红色，因此正确答案是B。其他选项都是其他行星，金星被称为“晨星”或“昏星”，木星是最大的行星，土星以其明显的环系著称。3.参考答案：B解析：本题考查数学计算。64的平方根是8，因此正确答案是B。其他选项都是错误的计算结果。4.参考答案：A解析：本题考查简单的减法计算。10减去3等于7，因此正确答案是A。其他选项都是错误的计算结果。5.参考答案：B解析：本题考查简单的乘法计算。5乘以7等于35，因此正确答案是B。其他选项都是错误的计算结果。6.参考答案：D解析：本题考查数学常识。质数是指只有1和它本身两个因数的自然数，7是质数，因此正确答案是D。其他选项都是合数，4可以被1、2、4整除，6可以被1、2、3、6整除，8可以被1、2、4、8整除。7.参考答案：B解析：本题考查地理常识。日本的首都是东京，因此正确答案是B。其他选项都是其他国家的首都，首尔是韩国的首都，北京是中国的首都，悉尼是澳大利亚的城市。8.参考答案：B解析：本题考查简单的加法计算。8加上15等于23，因此正确答案是B。其他选项都是错误的计算结果。9.参考答案：C解析：本题考查天文学常识。木星是太阳系中最大的行星，因此正确答案是C。其他选项都是其他行星，地球是人类的家园，火星是红色星球，金星是距离太阳最近的行星。10.参考答案：A解析：本题考查化学常识。氧气是一种化学元素，因此正确答案是A。其他选项都是其他物质，黄金是一种金属元素，水是一种化合物，木是一种有机物质。二、填空题1.参考答案：basketball解析：本题考查七年级上册第七单元“运动与爱好”知识点。根据题干“我的favoritesport是”可知，此处应填入一个运动名称。根据七年级上册第七单元所学词汇，篮球（basketball）是常见的运动项目之一，符合语境。该题需要学生掌握常用运动词汇的拼写和运用。2.参考答案：intheafternoon解析：本题考查七年级上册第七单元“日常活动时间”知识点。根据题干“我们经常在下午打篮球”可知，此处应填入一个表示时间的短语。根据七年级上册第七单元所学，intheafternoon意为“下午”，符合语境。该题需要学生掌握介词短语表示时间的运用。3.参考答案：go解析：本题考查七年级上册第七单元“频率副词与动词原形”知识点。根据题干“Howoftendoyou______tothelibrary?”可知，此处应填入动词原形。Howoften后面通常跟动词原形，表示频率。根据七年级上册第七单元所学，gotothelibrary意为“去图书馆”，符合语境。该题需要学生掌握频率副词后动词原形的运用。4.参考答案：doesmysister解析：本题考查七年级上册第七单元“一般现在时第三人称单数”知识点。根据题干“She______Englisheveryday.”可知，此处应填入动词的第三人称单数形式。She是第三人称单数主语，everyday表示经常性动作，应用一般现在时。根据七年级上册第七单元所学，does是do的第三人称单数形式，符合语境。该题需要学生掌握一般现在时第三人称单数的运用。5.参考答案：Do解析：本题考查七年级上册第七单元“一般疑问句构成”知识点。根据题干“______youlikewatchingTV?”可知，此处应填入一般疑问句的助动词。一般疑问句由助动词（do/does/did）+主语+动词原形构成。根据七年级上册第七单元所学，Do用于对第一人称和第二人称提问，符合语境。该题需要学生掌握一般疑问句的构成。6.参考答案：do解析：本题考查七年级上册第七单元“动词原形与主语一致”知识点。根据题干“Iusually______homeworkafterschool.”可知，此处应填入动词原形。I是第一人称主语，通常用do。根据七年级上册第七单元所学，dohomework意为“做作业”，符合语境。该题需要学生掌握主语与动词原形的对应关系。7.参考答案：do解析：本题考查七年级上册第七单元“特殊疑问句构成”知识点。根据题干“Whattime______youusuallyhavelunch?”可知，此处应填入动词原形。Whattime后面通常跟动词原形，表示时间。根据七年级上册第七单元所学，do是do的原形，符合语境。该题需要学生掌握特殊疑问句的构成。8.参考答案：aregoingto解析：本题考查七年级上册第七单元“begoingto未来时”知识点。根据题干“They______goingtothezoonextSunday.”可知，此处应填入begoingto的形式。NextSunday表示将来时间，应用begoingto未来时。根据七年级上册第七单元所学，aregoingto是begoingto的形式，符合语境。该题需要学生掌握begoingto未来时的运用。9.参考答案：can解析：本题考查七年级上册第七单元“情态动词can”知识点。根据题干“Canyouswim?Yes,I______.”可知，此处应填入情态动词can。Can用于询问能力，Yes回答中应用can。根据七年级上册第七单元所学，can表示“能”，符合语境。该题需要学生掌握情态动词can的运用。10.参考答案：did解析：本题考查七年级上册第七单元“一般过去时构成”知识点。根据题干“What______youdolastweekend?”可知，此处应填入动词的过去式。Lastweekend表示过去时间，应用一般过去时。根据七年级上册第七单元所学，did是do的过去式，符合语境。该题需要学生掌握一般过去时的构成。三、判断题1.参考答案：√解析：本题考查〈天气与季节〉。伦敦位于温带海洋性气候区，全年温和湿润，多雨多雾，符合题干描述，故该陈述正确。2.参考答案：√解析：本题考查〈个人喜好与季节特征〉。秋天的确以落叶变色闻名，符合普遍认知，故该陈述正确。3.参考答案：×解析：本题考查〈日常作息习惯〉。题干未说明是“通常”情况，仅说“通常十点睡觉”就判断为错误，但实际可能是个体习惯，表述过于绝对，故该陈述错误。4.参考答案：√解析：本题考查〈运动与健康〉。游泳能锻炼全身肌肉、提高心肺功能，符合健康运动认知，故该陈述正确。5.参考答案：√解析：本题考查〈世界著名地标〉。《世界遗产名录》确认其地位，符合事实，故该陈述正确。6.参考答案：√解析：本题考查〈户外活动与爱好〉。徒步旅行是常见的休闲运动，尤其适合热爱自然的群体，符合事实，故该陈述正确。7.参考答案：√解析：本题考查〈法国著名建筑〉。埃菲尔铁塔是巴黎标志性建筑，符合事实，故该陈述正确。8.参考答案：√解析：本题考查〈西方艺术名作〉。达芬奇《蒙娜丽莎》是卢浮宫镇馆之宝，符合事实，故该陈述正确。9.参考答案：×解析：本题考查〈地理常识错误点〉。亚马逊河实际是流量最大而非最长，尼罗河最长，故该陈述错误。10.参考答案：×解析：本题考查〈地理常识错误点〉。撒哈拉沙漠是面积最大而非体积最大，故该陈述错误。四、简答题1.参考答案：TheGreatWallisasymbolofChinesecultureandhistory.ItisalongwallbuilttoprotectChinafrominvaders.TheGreatWallisverylongandrunsacrossnorthernChina.Itisalsoapopulartouristdestination.解析：本题考查“名胜古迹介绍”。答案要点包括：长城是中国文化和历史的象征；长城是为了抵御入侵者而建造的长墙；长城非常长，横跨中国北部；长城也是一个受欢迎的旅游目的地。这些要点符合对长城的基本介绍，能够满足题目的要求。2.参考答案：Onweekends,Iusuallygotothelibrarytoreadbooks.Ialsospendtimewithmyfamily,watchingmovies,orplayingsports.解析：本题考查“日常活动描述”。答案要点包括：周末去图书馆读书；和家人一起看电影或做运动。这些活动是周末常见的休闲活动，能够满足题目的要求。3.参考答案：Themostimportantinventioninmodernhistoryistheinternet.Theinternethaschangedthewaywecommunicate,work,andaccessinformation.Itconnectspeoplearoundtheworldandhasmadelifeeasierandmoreconvenient.解析：本题考查“科技发明介绍”。答案要点包括：互联网是现代历史上最重要的发明；互联网改变了我们的沟通方式、工作方式和获取信息的方式；互联网连接了世界各地的人们，使生活更简单方便。这些要点符合对互联网的基本介绍，能够满足题目的要求。4.参考答案：IcantellyouaboutAlbertEinstein.HewasafamousGermanscientist.Einsteinmademanyimportantcontributionstoscience,especiallyinthefieldofphysics.Histheoryofrelativitychangedourunderstandingofspaceandtime.HealsowontheNobelPrizeinPhysicsin1921.解析：本题考查“科学家介绍”。答案要点包括：介绍爱因斯坦这位著名的德国科学家；爱因斯坦在物理学领域做出了许多重要贡献；他的相对论改变了我们对时空的理解；他在1921年获得了诺贝尔物理学奖。这些要点符合对爱因斯坦的基本介绍，能够满足题目的要求。5.参考答案：Photosynthesisistheprocessbywhichplantsmaketheirownfood.Ithappensintheleavesofplants.Duringphotosynthesis,plantsusesunlight,water,andcarbondioxidetomakeglucoseandoxygen.Glucoseisatypeofsugarthatplantsuseforenergy.Oxygenisreleasedintotheair.解析：本题考查“植物光合作用介绍”。答案要点包括：光合作用是植物制造自己食物的过程；这个过程发生在植物的叶子上；在光合作用过程中，植物使用阳光、水和二氧化碳来制造葡萄糖和氧气；葡萄糖是一种植物用于能量的糖；氧气被释放到空气中。这些要点符合对光合作用的基本介绍，能够满足题目的要求。6.参考答案：Themaincausesofpollutioninurbanareasareindustrialemissions,vehicleexhaust,andwastedisposal.Industrialemissionscomefromfactoriesandpowerplants.Vehicleexhaustcomesfromcarsandtrucks.Wastedisposalproblemsincludeimpropergarbagecollectionandrecycling.解析：本题考查“城市污染原因分析”。答案要点包括：工业排放、车辆尾气和废物处理是城市污染的主要原因；工业排放来自工厂和发电厂；车辆尾气来自汽车和卡车；废物处理问题包括不当的垃圾收集和回收。这些要点符合对城市污染原因的基本分析，能够满足题目的要求。7.参考答案：Toprotectendangeredspecies,wecantakeseveralactions.First,we