2026年广东省深圳市第二中学七年级英语第9单元写作练习题及答案

2026年广东省深圳市第二中学七年级英语第9单元写作练习题及答案第1页共1页2026年广东省深圳市第二中学七年级英语第9单元写作练习题及答案一、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.Mybrotheroftenhelpsmymother______thehouseonweekends.A.cleanB.tocleanC.cleaningD.cleans参考答案：A2.What______youdolastweekend?A.didB.areC.wasD.do参考答案：A3.Theteacheraskedus______wewerereadyforthetest.A.ifB.thatC.whetherD.what参考答案：C4.I______alettertomypenpalyesterday.A.wroteB.writeC.amwritingD.waswriting参考答案：A5.Canyoutellme______timeitis?A.theB.aC.anD./(zeroarticle)参考答案：A6.They______tothezoolastSunday.A.goB.wentC.goesD.going参考答案：B7.Myfather______acarfiveyearsago.A.buyB.buysC.boughtD.buying参考答案：C8.Whatabout______amovietonight?A.watchB.watchingC.towatchD.watched参考答案：B9.Sheis______interestingbook.A.aB.anC.theD./参考答案：B10.______youliketeaorcoffee?A.DoB.DoesC.IsD.Are参考答案：B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.Myfatheris______engineer.Heworksinafactory.参考答案：engineer2.Whatareyougoingtodo______theweekend?参考答案：on3.Thebookis______interesting.Iwanttoreadit.参考答案：an4.Sheis______Englishteacher.SheteachesusEnglish.参考答案：an5.Canyouplaythepiano?Yes,I______.参考答案：can6.Iusuallygetupat6:00______themorning.参考答案：in7.Therearemanybirds______thetree.参考答案：on8.Whattimeisitnow?It's______o'clock.参考答案：six9.MynameisLiHua.Iamastudent.参考答案：a10.Iliketoplaybasketball______myfriends.参考答案：with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.TheweatherinShenzhenisusuallysunnyandhotallyearround.参考答案：×2.Myfatherisaengineerandheworksinafactory.参考答案：×3.Ioftengotothelibrarytoborrowbooksanddohomework.参考答案：√4.TheGreatWallisoneofthemostfamouslandmarksinChina.参考答案：√5.Eatingvegetablesandfruitsisgoodforyourhealth.参考答案：√6.Ittakesmeaboutonehourtowalktoschooleveryday.参考答案：√7.LearningEnglishisverydifficultandIdon'tlikeit.参考答案：×8.Thebook"HarryPotterandtheSorcerer'sStone"iswrittenbyJ.K.Rowling.参考答案：√9.Iamgoingtovisitmygrandparentsnextweekend.参考答案：√10.Theschoolbusarrivesatourschoolat7:00a.m.everyday.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.Pleasedescribethemainfeaturesofaparallelcircuit.参考答案：Aparallelcircuithasmultiplepathsforcurrenttoflow.Thevoltageacrosseachcomponentisthesame,butthecurrentthrougheachcomponentcanbedifferent.Thetotalcurrentinthecircuitisthesumofthecurrentsthrougheachpath.2.Whatarethedifferencesbetweenrenewableandnon-renewableenergysources?参考答案：Renewableenergysourcesarethosethatcanbereplenishednaturally,suchassolar,wind,andhydroelectricpower.Non-renewableenergysourcesareformedovermillionsofyearsandcannotbereplenishedquickly,suchascoal,oil,andnaturalgas.3.Howdoyoucalculatetheareaofatriangle?参考答案：Theareaofatriangleiscalculatedusingtheformula:Area=(1/2)×base×height.First,measurethelengthofthebaseandtheheightperpendiculartothatbase.Then,multiplythebasebytheheightanddividetheresultby2.4.Inafarmirrigationsystem,waterflowsthroughapipewithadiameterof10cm.Iftheflowrateis0.5literspersecond,whatisthespeedofthewaterinthepipe?参考答案：Thespeedofwaterinthepipecanbecalculatedusingtheformula:Speed=Flowrate/Cross-sectionalarea.Thecross-sectionalareaofthepipeisπ×(diameter/2)²=π×(10cm/2)²=25πcm².Theflowrateis0.5liters/second=500cm³/second.Therefore,Speed=500/25π≈6.37cm/second.5.Explaintheprocessofphotosynthesisinplants.参考答案：Photosynthesisistheprocessbywhichplantsusesunlight,water,andcarbondioxidetoproduceglucose(sugar)andoxygen.Theprocessoccursinthechloroplasts,wherechlorophyllcapturessunlight.Theoverallchemicalequationis6CO₂+6H₂O+lightenergy→C₆H₁₂O₆+6O₂.6.Describethestepstoconstructaperpendicularbisectorofalinesegmentusingacompassandstraightedge.参考答案：Toconstructaperpendicularbisector:1)Placethecompasspointononeendpointofthelinesegmentanddrawanarcaboveandbelowtheline.2)Withoutchangingthecompasswidth,repeatfromtheotherendpoint,creatingtwomorearcsthatintersectthefirsttwo.3)Drawastraightlinethroughthetwointersectionpoints.Thislineistheperpendicularbisector.7.Ifacartravelsataconstantspeedof60km/h,howfarwillittravelin3hours?参考答案：Thedistancetravelediscalculatedusingtheformula:Distance=Speed×Time.Distance=60km/h×3h=180km.8.Compareandcontrastthefunctionsoftheheartandthelungsinthehumanbody.参考答案：Theheartpumpsbloodthroughoutthebody,deliveringoxygenandnutrientstotissues.Thelungsareresponsibleforgasexchange,takinginoxygenandreleasingcarbondioxide.Theheartisamuscularorgan,whilethelungsaremadeoftissues.Theheartworkscontinuously,whilethelungsonlyneedtofunctionduringbreathing.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.Thelocalgovernmentplanstobuildanewsolarpowerplanttomeettheenergyneedsofthecity.Asanenvironmentalexpert,youareaskedtowriteareportonthebenefitsandchallengesofusingsolarenergy.Whatarethemainbenefitsandchallengesofsolarenergy?Provideatleastthreebenefitsandthreechallengesinyourreport.A.EnvironmentalpollutionB.RenewableresourceC.HighinitialcostD.Geographicallimitation参考答案：B2.Afarmerwantstoimprovetheirrigationsystemofhisfarm.Hehastwooptions:usingtraditionalfloodirrigationorinstallingadripirrigationsystem.Traditionalfloodirrigationissimpleandcheapbutwastesalotofwater.Dripirrigationismoreefficientandsaveswaterbutrequiresmoreinvestment.Whichoptionshouldthefarmerchoose?Explainyouranswerandprovideatleasttworeasonsforyourchoice.A.TraditionalfloodirrigationB.DripirrigationC.BothoptionsareequallygoodD.Neitheroptionissuitable参考答案：B3.Ahydroelectricpowerplantgenerateselectricitybyusingtheenergyofflowingwater.Thepoweroutputofahydroelectricplantdependsontheflowrateofthewaterandtheheightfromwhichthewaterfalls.Iftheflowrateofthewateris100m³/sandtheheightis50meters,calculatethepoweroutputoftheplant.Assumetheefficiencyoftheplantis80%.A.4000kWB.5000kWC.6000kWD.7000kW参考答案：B4.Thegovernmentofacountrywantstoimproveitstransportationsystem.Theyhavetwooptions:buildinganewhighwayorexpandingtheexistingrailwaynetwork.Buildinganewhighwayisexpensivebutwouldreducetraveltimeforroadusers.Expandingtherailwaynetworkislessexpensivebutwouldrequiresignificantupgradestoexistinginfrastructure.Whichoptionshouldthegovernmentchoose?Explainyouranswerandprovideatleasttworeasonsforyourchoice.A.BuildinganewhighwayB.ExpandingtherailwaynetworkC.BothoptionsareequallygoodD.Neitheroptionissuitable参考答案：A5.Awindfarmconsistsofmultiplewindturbinesthatgenerateelectricityusingtheenergyofwind.Thepoweroutputofawindturbinedependsonthewindspeedandthesizeoftheturbineblades.Ifthewindspeedis15m/sandthebladediameteris50meters,calculatethepoweroutputoftheturbine.Assumetheefficiencyoftheturbineis30%.A.500kWB.1000kWC.1500kWD.2000kW参考答案：B6.Thelocalgovernmentwantstoimprovethepublictransportationsystemofthecity.Theyhavetwooptions:introducingelectricbusesorexpandingthesubwaynetwork.Introducingelectricbusesislessexpensivebutwouldrequiresignificantinvestmentincharginginfrastructure.Expandingthesubwaynetworkismoreexpensivebutwouldprovideamoreefficientandenvironmentallyfriendlymodeoftransportation.Whichoptionshouldthegovernmentchoose?Explainyouranswerandprovideatleasttworeasonsforyourchoice.A.IntroducingelectricbusesB.ExpandingthesubwaynetworkC.BothoptionsareequallygoodD.Neitheroptionissuitable参考答案：B7.AgeothermalpowerplantgenerateselectricitybyusingtheheatfromtheEarth'sinterior.Thepoweroutputofageothermalpowerplantdependsonthetemperatureofthegeothermalfluidandtheflowrateofthefluid.Ifthetemperatureofthegeothermalfluidis200°Candtheflowrateis100m³/s,calculatethepoweroutputoftheplant.Assumetheefficiencyoftheplantis20%.A.2000kWB.4000kWC.6000kWD.8000kW参考答案：B8.Thegovernmentofacountrywantstoimproveitseducationsystem.Theyhavetwooptions:investinginnewschoolsandprovidingonlineeducationresources.Investinginnewschoolsisexpensivebutwouldprovidebetterlearningenvironmentsforstudents.Providingonlineeducationresourcesislessexpensivebutwouldrequiresignificantinvestmentintechnologyinfrastructure.Whichoptionshouldthegovernmentchoose?Explainyouranswerandprovideatleasttworeasonsforyourchoice.A.InvestinginnewschoolsB.ProvidingonlineeducationresourcesC.BothoptionsareequallygoodD.Neitheroptionissuitable参考答案：A标准答案与解析一、单项选择题1.参考答案：A解析：本题考查〈动词不定式作宾语〉。helpsbdosth是固定搭配，意为“帮助某人做某事”，其中dosth是动词不定式。选项Btoclean是不定式，但不符合固定搭配；选项Ccleaning是动名词，不符合固定搭配；选项Dcleans是动词第三人称单数形式，不符合句意。故选A。2.参考答案：A解析：本题考查〈一般过去时态〉。根据句意“你上周做了什么”，询问过去发生的事情，应该使用一般过去时态。选项Bare是现在进行时；选项Cwas是一般过去时，但主语应该是第三人称单数；选项Ddo是一般现在时。故选A。3.参考答案：C解析：本题考查〈宾语从句连词whether/if的用法〉。asksbwhether/ifsthis/was...是固定句型，意为“问某人是否……”。选项Aif也可以引导宾语从句，但whether更常用且更正式；选项Bthat不能引导宾语从句；选项Dwhat不能引导宾语从句。故选C。4.参考答案：A解析：本题考查〈一般过去时态〉。根据句意“我昨天写了一封信”，描述过去发生的事情，应该使用一般过去时态。选项Bwrite是一般现在时；选项Camwriting是现在进行时；选项Dwaswriting是过去进行时。故选A。5.参考答案：A解析：本题考查〈定冠词the的用法〉。特指时间时，需要使用定冠词the。选项Ba是不定冠词，用于泛指；选项Can是不定冠词，用于元音音素开头的单词；选项D/是零冠词，用于泛指。故选A。6.参考答案：B解析：本题考查〈一般过去时态〉。根据句意“他们上周日去了动物园”，描述过去发生的事情，应该使用一般过去时态。选项Ago是一般现在时；选项Cgoes是一般现在时第三人称单数形式；选项Dgoing是动名词。故选B。7.参考答案：C解析：本题考查〈一般过去时态〉。根据句意“我父亲五年前买了一辆车”，描述过去发生的事情，应该使用一般过去时态。选项Abuy是一般现在时；选项Bbuys是一般现在时第三人称单数形式；选项Dbuying是动名词；选项Cbought是一般过去时。故选C。8.参考答案：B解析：本题考查〈动名词作宾语〉。Whataboutdoingsth是固定搭配，意为“做某事怎么样”。选项Awatch是动词原形；选项Ctowatch是不定式；选项Dwatched是动词过去式。故选B。9.参考答案：B解析：本题考查〈不定冠词an的用法〉。a/an用于元音音素开头的单词前。book的首字母b发音是/b/，属于辅音音素，应该使用a；但interesting的首字母i发音是/ɪ/，属于元音音素，应该使用an。故选B。10.参考答案：B解析：本题考查〈一般疑问句构成〉。当主语是第三人称单数时，一般疑问句使用does开头。选项ADo用于第一人称和第二人称；选项CIs用于第三人称单数，但主语应该是someone/something；选项DAre用于第一人称和第二人称复数。故选B。二、填空题1.参考答案：engineer解析：本题考查第九单元的“职业与工作”知识点。题干询问“我的父亲是什么职业”，根据后文“他在一家工厂工作”，可以推断出父亲是工程师，填入engineer。2.参考答案：on解析：本题考查第九单元的“未来计划与打算”知识点。题干询问“你周末打算做什么”，根据固定搭配“ontheweekend”，应填入on。3.参考答案：an解析：本题考查第九单元的“形容词与副词”知识点。题干描述“这本书很有趣”，根据aninteresting的用法规则，因为interesting是以元音音素开头的，所以用不定冠词an。4.参考答案：an解析：本题考查第九单元的“职业与工作”知识点。题干询问“她是什么职业”，根据后文“她教我们英语”，可以推断出她是英语老师，填入anEnglishteacher。5.参考答案：can解析：本题考查第九单元的“能力与技能”知识点。题干询问“你会弹钢琴吗”，回答“Yes,I______.”，根据固定搭配“candosomething”，应填入can。6.参考答案：in解析：本题考查第九单元的“时间表达”知识点。题干描述“我通常早上6点起床”，根据固定搭配“inthemorning”，应填入in。7.参考答案：on解析：本题考查第九单元的“地点与位置”知识点。题干描述“树上有许多鸟”，根据固定搭配“onthetree”，应填入on。8.参考答案：six解析：本题考查第九单元的“时间表达”知识点。题干询问“现在几点了”，回答“It's______o'clock.”，根据常识和题干中的o'clock，应填入数字six。9.参考答案：a解析：本题考查第九单元的“自我介绍”知识点。题干描述“我叫李华，我是一个学生”，根据不定冠词的用法规则，因为student是以辅音音素开头的，所以用不定冠词a。10.参考答案：with解析：本题考查第九单元的“社交活动”知识点。题干描述“我喜欢和朋友打篮球”，根据固定搭配“playbasketballwithsomeone”，应填入with。三、判断题1.参考答案：×解析：本题考查地理常识。深圳位于中国南方，虽然大部分时间天气晴朗，但并非全年都炎热，冬季也会比较凉爽，所以该说法不完全正确。2.参考答案：×解析：本题考查名词的数。engineer是可数名词，前面应该有冠词，正确的说法是“Myfatherisanengineer”。3.参考答案：√解析：本题考查日常活动。去图书馆借书和做作业是常见的日常活动，该说法正确。4.参考答案：√解析：本题考查文化常识。长城是中国最著名的地标之一，该说法正确。5.参考答案：√解析：本题考查健康知识。吃蔬菜和水果对健康有益，是普遍认可的健康观念，该说法正确。6.参考答案：√解析：本题考查日常活动。步行上学需要一定时间，一小时是合理的估计，该说法正确。7.参考答案：×解析：本题考查个人观点。学习英语的难度因人而异，有些人可能觉得难，有些人可能觉得不难，而且是否喜欢也是个人观点，该说法过于绝对。8.参考答案：√解析：本题考查文学常识。《哈利•波特与魔法石》的作者是J.K.罗琳，该说法正确。9.参考答案：√解析：本题考查个人计划。去grandparents的weekendvisit是常见的家庭活动，该说法正确。10.参考答案：×解析：本题考查时间表达。7:00a.m.是正确的表达，但每天是否都如此需要确认，如果只是某一天的情况，则该说法不完全正确。四、简答题1.参考答案：Aparallelcircuithasmultiplepathsforcurrenttoflow.Thevoltageacrosseachcomponentisthesame,butthecurrentthrougheachcomponentcanbedifferent.Thetotalcurrentinthecircuitisthesumofthecurrentsthrougheachpath.解析：本题考查《电路基础》中的并联电路特征。解析中点明了并联电路的两大核心特征：电流有多条路径且各支路电流可不同、各支路电压相等。答案分三点完整覆盖了并联电路的电压与电流规律，符合2分值要求。2.参考答案：Renewableenergysourcesarethosethatcanbereplenishednaturally,suchassolar,wind,andhydroelectricpower.Non-renewableenergysourcesareformedovermillionsofyearsandcannotbereplenishedquickly,suchascoal,oil,andnaturalgas.解析：本题考查《能源开发与环境保护》中的可再生能源与非可再生能源概念。解析中通过对比两类能源的"可再生性"这一本质区别，并列举典型实例，符合2分值要求。干扰项设计上贴合学生对"太阳能"与"石油"的常见混淆认知。3.参考答案：Theareaofatriangleiscalculatedusingtheformula:Area=(1/2)×base×height.First,measurethelengthofthebaseandtheheightperpendiculartothatbase.Then,multiplythebasebytheheightanddividetheresultby2.解析：本题考查《几何基础》中的三角形面积公式推导。解析中完整呈现了公式来源、计算步骤及单位换算提示，符合2分值要求。干扰项设计上贴合学生易忽略"高垂直于底"这一关键条件。4.参考答案：Thespeedofwaterinthepipecanbecalculatedusingtheformula:Speed=Flowrate/Cross-sectionalarea.Thecross-sectionalareaofthepipeisπ×(diameter/2)²=π×(10cm/2)²=25πcm².Theflowrateis0.5liters/second=500cm³/second.Therefore,Speed=500/25π≈6.37cm/second.解析：本题考查《流体力学》中的流量与速度关系。解析中完整呈现了单位换算（升换立方厘米）、面积计算及最终速度求解过程，符合2分值要求。干扰项设计上贴合学生易混淆"直径平方"与"直径"的常见错误。5.参考答案：Photosynthesisistheprocessbywhichplantsusesunlight,water,andcarbondioxidetoproduceglucose(sugar)andoxygen.Theprocessoccursinthechloroplasts,wherechlorophyllcapturessunlight.Theoverallchemicalequationis6CO₂+6H₂O+lightenergy→C₆H₁₂O₆+6O₂.解析：本题考查《植物生理》中的光合作用过程。解析中通过分步描述（场所、原料、条件、产物）及化学方程式完整呈现光合作用，符合2分值要求。干扰项设计上贴合学生易混淆"氧气产生"与"二氧化碳消耗"的常见错误。6.参考答案：Toconstructaperpendicularbisector:1)Placethecompasspointononeendpointofthelinesegmentanddrawanarcaboveandbelowtheline.2)Withoutchangingthecompasswidth,repeatfromtheotherendpoint,creatingtwomorearcsthatintersectthefirsttwo.3)Drawastraightlinethroughthetwointersectionpoints.Thislineistheperpendicularbisector.解析：本题考查《几何作图》中的垂线段中点作法。解析中分三步完整呈现作图过程，符合2分值要求。干扰项设计上贴合学生易忽略"两弧交点"这一关键步骤的常见错误。7.参考答案：Thedistancetravelediscalculatedusingtheformula:Distance=Speed×Time.Distance=60km/h×3h=180km.解析：本题考查《运动学》中的路程计算。解析中完整呈现公式应用及单位换算，符合2分值要求。干扰项设计上贴合学生易忽略"单位统一"这一关键条件。8.参考答案：Theheartpumpsbloodthroughoutthebody,deliveringoxygenandnutrientstotissues.Thelungsareresponsibleforgasexchange,takinginoxygenandre