(完整)新人教版九年级第十四单元精选练习题附答案(2)

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人教版九年级物理全一册《第十四章内能的利用》单元测试卷(附答案)

人教版九年级物理全一册《第十四章内能的利用》单元测试卷(附答案)

人教版九年级物理全一册《第十四章内能的利用》单元测试卷(附答案)学校:___________班级:___________姓名:___________考号:___________一、单选题1.关于热机的效率,下列说法正确的是()A.效率高的热机燃料的利用率低B.效率高的热机功率一定大C.效率高的热机功率一定小D.在做了相同的功时,效率高的热机消耗燃料少2.车载冰箱上市得到了许多消费者的青睐。

如图是某品牌车载冰箱,下面关于该冰箱涉及物理知识的说法中,正确的是()A.打开车载冰箱门,可以降低车内温度B.冰箱内矿泉水温度降低是能量的转化过程C.冰箱散热口摸起来很热,是因为电流的具有热效应D.冰箱内壁有时会出现“白霜”,是水蒸气的凝华现象3.某柴油机工作一段时间后,油箱里的柴油发生变化的是()A.密度B.比热容C.质量D.热值4.有关四冲程内燃机的叙述中,不正确的是A.工作中只有做功冲程把内能转化为机械能B.工作开始时要靠外力启动C.工作中压缩冲程是把内能转化为机械能D.每一个工作循环,燃气只做功一次5.下列装置工作时发生能量转化的说法中正确的是A.电动机将机械能转化为电能B.汽油机将电能转化为内能C.干电池将电能转化为化学能D.发电机将机械能转化为电能6.如图所示是汽油机工作时的四个冲程,其中说法正确的是()A.甲冲程中的能量转换过程为内能转换为机械能B.丙冲程是依靠惯性完成的C.使用热值更高的燃料可提高热机的工作效率D.丁冲程中活塞向下运动汽缸内压强变小,大气压将汽油与空气混合物压入汽缸7.2020年11月24日,搭载着“嫦娥五号”探测器的长征五号火箭发射成功,标志着中国“探月工程”第三步拉开序幕,长征五号运载火箭采用无毒,无污染的液氢液氧燃料作推进剂,属于绿色环保大型液体运载火箭,下列说法正确的是()A.液氢燃烧得越充分,其热值就越大B.燃料燃烧产生高温高压的燃气对火箭做功,燃气的内能会增加C.高温高压的燃气推动火箭升空把内能转化成机械能D.通常情况下气态的氢氧是采用高温高压方式进行加注的8.喜欢思考的小明用塑料矿泉水瓶进行了如下游戏探究:瓶中留有少量水,盖上瓶盖(如图甲);扭转瓶身(如图乙);拧松瓶盖(如图丙),瓶盖被瓶内的气体冲出,同时瓶口出现白雾(如图丁)。

(人教版)初中英语九年级 Unit 14单元测试卷含答案

(人教版)初中英语九年级 Unit 14单元测试卷含答案

Unit 14I remember meeting all of you in Grade 7.单元测试01第一卷听力部分(15分)Ⅰ.听句子,选择与所听句子相符合的图片(5分)A. B. C.D. E.1.________2.________3.________4.________5.________Ⅱ.听两段较长对话,选择最佳答案(5分)听第一段对话,回答第6~7小题。

6.Where has Jim gone for his holiday?A.To Shanghai.B.To Beijing.C.To Paris.7.Who did David go to Paris with?A. His brother.B.His parents.C.His sister.听第二段对话,回答第8~10小题。

8.How long did Vince skate today?A.About 4 hours.B.About 6 hours.C.About 5 hours.9.When did Vince begin skating?A.At the age of 5.B.At the age of6.C.At the age of 7.10.Who gave Vince the first pair of skates?A.His father.B.His uncle.C.His grandmother.Ⅲ.听长对话和对话后面的问题,选择最佳答案(5分)11.A.He lost his Chinese book. B.He failed the test. C.His teacher can’t help him.12.A.It’s easy. B.It’s difficult. C.It’s interesting.13.A.Math. B. Chinese. C. Science.14.A.Thursday afternoons. B.Saturday afternoons. C.Sunday afternoons.15.A.At school. B.At Ann’s home. C.At Peter’s home.第二卷笔试部分(85分)Ⅳ.单项选择(10分)16.Many students write to Language Doctor to ________ advice about learning English.A.look throughB.ask forC.give upD.worry about17.If you want to change the world, you have to ________ yourself first.A. enjoyB. ask forC. give upD.change18.Who taught you to ________ in music class?A.play the keyboardB.play keyboardC.play on the keyboardD.play on keyboard19.Read the ________ carefully before you take the medicine.A.instructionsB.descriptionsC.collectionsD.expressions20.Who are supposed to be responsible ________ the traffic accident?A.forB.toC.inD.about21.Lily is afraid to speak in public.We should try to help her ________ shyness.A.developB.improveC.overcomeD.reduce22.We have a lot of things to do.But ________ we must get some sleep.A.at onceB. at firstC.first ofallD.all in all23.Many kids ________ volunteers to help others since the terrible earthquake.A.have become;happenedB.have been;happenedC.became;have happenedD.became;happened24.Congratulations ________ all the winners ________ your excellent grades!A.to;onB.to;forC.on;onD.on;for25.I think young people should be ________ knowledge.A.good atB.friendly withC. ready toD. thirsty forV.完形填空(10分)Dear Jenny,How’s it going?Are you busy with your study these days?I’ve been back at school 26 nearly four weeks.I’m very glad to tell you that great 27 have takenplace in our school this term.First of all, we’re asked to"clear our plates" when having our meals and say 28 to wasting.Some of us used to order more than what we could eat.That was a big waste of food.Now we need to 29 the food we order.We should also stop wasting in some other ways.For example, we should turn off the lights when we 30 the classroom.And our school has opened up some fields for us to learn how to grow vegetables.Each class is given a small garden and our class has decided to grow some tomatoes and beans(豆类)in our 31 time.I think that’ll be very interesting.Maybe I’ll be able to 32 you some beans we’ve grown by ourselves next time! What’s more, we have only two classes in the afternoon 33 we have more time for after-school activities.I’m one of the traffic safety volunteers in our school. After school, we take turns to go to the streets near our school and ask people to 34 the traffic rules.Ithink we are having a different school life now!Please write back soon and tell 35 more about your school.Yours,Wang Wei26.A.in B.for C.on D.at27.A.changes B.things C.interests D.lessons28.A.yes B. hello C. no D.thanks30.A.leave B.reach C.open D.build31.A.busy B.free C.happy D.sad32.A.plant B.buy C.post D.lend33.A.because B.when C.before D.so34.A.follow B.make C.break D.thinkⅥ.阅读理解(30分)AWe spend hours, days and years of our lives in our school.Imagine(想象)you could design(设计)your dream school, what would it be like?What would you be doing?We wanted to find out what teenagers around the world thought.Here is what they said:Richard from the USA:My dream school would have a big swimming pool and two soccer fields.It would also have a cinema, a gym and a shopping centre.My school has none of these, and I think there should be more pleasant things for students to do while they are studying.Sonic from Italy:I’d like a room where we can relax and play computer games.I’d also like to have a music room.I think there should be a place for everyone to go and relax after class.Wu from Beijing:I think it would be great to have another day off(休息日)every week besides the weekend.If that day was a Friday or a Monday, we would have a long weekend every week.What fun! I also think school should start later, at about 10 o’clock, and finish earlier.Hannah from Australia:In my dream school, I think the teachers should give us more freedom(自由)and choice about how we study and what we study.I also think it’s not necessary for us to wear school uniforms every day.I really don’t like wearing it.36.There would be ________ in Richard’s dream school.A.a big swimming pool and a music roomB.a room to relax and play computer gamesC.a big swimming pool and a shopping centre37.How many days off does Wu want to have in a week?A.2B.3C.438.Which country is not mentioned(提到)in the passage?A. Italy.B. Japan.C. Australia.39.From the passage we know that ________.A.Sonic from Italy would like a room where she can relax and play computer gamesB.Richard from the USA thinks his dream school should start at 10 o’clockC.Hannah from Australia likes wearing a school uniform every day40.Which is the best title(标题)for the passage?A.Schools in the pastB.Schools todayC.Dream schoolsBMrs Thompson, a school teacher, told the children on the first day that she loved them all the same.But that was a lie.There in the front row was a little boy named Teddy Stoddard.He didn’t get along well with the other children and he always needed a bath. She did not like him.Then Mrs Thompson got to know that Teddy was a very good boy before the death of his mother. Mrs Thompson was ashamed of herself. She felt even worse when, like all her other students, Teddy bought her a present, too. It was his mother’s perfume(香水)。

(含答案)九年级物理人教版全一册《第十四章 内能的利用》单元测试02

(含答案)九年级物理人教版全一册《第十四章 内能的利用》单元测试02

答卷时应注意事项1、拿到试卷,要认真仔细的先填好自己的考生信息。

2、拿到试卷不要提笔就写,先大致的浏览一遍,有多少大题,每个大题里有几个小题,有什么题型,哪些容易,哪些难,做到心里有底;3、审题,每个题目都要多读几遍,不仅要读大题,还要读小题,不放过每一个字,遇到暂时弄不懂题意的题目,手指点读,多读几遍题目,就能理解题意了;容易混乱的地方也应该多读几遍,比如从小到大,从左到右这样的题;4、每个题目做完了以后,把自己的手从试卷上完全移开,好好的看看有没有被自己的手臂挡住而遗漏的题;试卷第1页和第2页上下衔接的地方一定要注意,仔细看看有没有遗漏的小题;5、中途遇到真的解决不了的难题,注意安排好时间,先把后面会做的做完,再来重新读题,结合平时课堂上所学的知识,解答难题;一定要镇定,不能因此慌了手脚,影响下面的答题;6、卷面要清洁,字迹要清工整,非常重要;7、做完的试卷要检查,这样可以发现刚才可能留下的错误或是可以检查是否有漏题,检查的时候,用手指点读题目,不要管自己的答案,重新分析题意,所有计算题重新计算,判断题重新判断,填空题重新填空,之后把检查的结果与先前做的结果进行对比分析。

亲爱的小朋友,你们好!经过两个月的学习,你们一定有不小的收获吧,用你的自信和智慧,认真答题,相信你一定会闯关成功。

相信你是最棒的!《第十四章内能的利用》单元测试一、单选题1.关于四冲程汽油机的工作过程有以下几种说法:①在压缩冲程中,是机械能转化为内能②在做功冲程中,是内能转化为机械能③只有做功冲程是燃气对外做功④汽油机和柴油机的点火方式相同以上说法中正确的是()A.只有②③B.只有①③C.只有②④D.只有①②③2.关于四冲程汽油机,下列说法中正确的是()A.在吸气冲程,吸入气缸内的是空气B.在压缩冲程,燃料燃烧,化学能转化为内能C.在做功冲程,内能转化为机械能D.在排气冲程,进气门和排气门都打开3.一台单缸四冲程汽油机的飞轮转速为每分钟1200转,则汽油机每秒内() A.完成20个冲程,做功20次B.完成40个冲程,做功40次C.完成40个冲程,做功10次D.完成20个冲程,做功20次4.下列关于四冲程内燃机的说法中正确的是()A.热机效率越高,所做的有用功就越多B.一个工作循环对外做功一次C.汽油机在吸气冲程中吸入汽缸的是空气D.汽油机在压缩冲程中将内能转化为机械能5.单缸四冲程汽油机铭牌上标有“3000r/min”,则以下说法不正确的是()A.在压缩冲程中,是内能转化为机械能B.在工作过程中,汽油机每秒钟完成100个冲程,做功25次C.只有做功冲程是燃气对外做功D.汽油机和柴油机的点火方式不同6.如图所示是四冲程汽油机一个工作循环中的三个冲程,缺少的一个冲程的名称及顺序,下列判断正确的是A.吸气冲程,应在甲图之前B.压缩冲程,应在甲、乙图之间C.做功冲程,应在乙、丙图之间D.排气冲程,应在丙图之后7.一杯酒精减少一半后,则()A.热值和比热容都不变B.热值减半、比热容不变C.热值和比热容都减半D.热值不变、比热容减半8.近几年煤炭价格较高,少数不法商贩将煤矸石、破碎石掺在优质煤中高价销售,客户为不上当,最恰当的方法是检测煤的()A.温度B.质量C.热值D.比热容9.做同样的功,甲柴油机用3h,消耗2kg柴油;乙柴油机用2h,消耗掉3kg柴油,下列说法中正确的是()A.甲的功率大,效率低B.甲的功率大,效率高C.乙的功率大,效率低D.乙的功率大,效率高10.关于燃料的热值,下列说法中正确的是()A.汽油的热值为4.6×107J/kg,表示每燃烧1kg的汽油可以获得4.6×107J的热量B.燃料的热值越大,燃烧时放出的热量越多C.燃料不燃烧时,热值为0D.燃料的热值与燃料燃烧时放出的热量和质量无关11.下列说法中不正确的是()A.快速行驶的车辆急刹车停下来过程中能量消失了B.水壶里的水烧开时,水蒸气把壶盖顶起,内能转化为机械能C.用锯条锯木板时,锯条发热,锯条的内能增加D.相同质量的0℃的冰和0℃的水相比较,0℃的水内能大12.下列有关能量转化的表述中,正确的是()A.汽油机做功冲程中,机械能转化为内能B.蓄电池充电时化学能转化为电能C.匀速上升的电梯中的人,动能转化为重力势能D.电饭锅工作时电能转化为内能13.甲内燃机比乙内燃机的效率高,表示A.甲的功率大B.甲燃料的热值比乙燃料的热值大C.工作时间相同,甲耗油较少D.甲用来做有用功的那部分能量与燃料完全燃烧放出的能量之比较大14.第41届世博会已于2010年5月1日在上海开幕.为了体现“城市,让生活更美好”的世博会主题精神,某校同学提出下列环保建议,其中你认为可行的是①开发新能源,减少化石燃料的燃烧;②提倡使用一次性发泡塑料餐具和塑料袋;③开发生产无汞电池;④提倡使用手帕,减少餐巾纸的使用;⑤分类回收垃圾A.①③⑤B.①③④⑤C.①②③⑤D.①②③④⑤二、填空题15.一台单缸四冲程汽油机在做功冲程时,其气缸中的气体内能______(填“增大”或“减小”);若在1秒钟的时间内刚好完成40次工作循环,则该汽油机飞轮的转数为______ r/min。

人教版九年级英语全册 Unit14 单元测试题(含答案)

人教版九年级英语全册 Unit14 单元测试题(含答案)

人教版九年级英语全册 Unit14 单元测试题(含答案)本试题分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。

第Ⅰ卷共5页,满分为75分;第II卷共2页,满分为45分。

本试题共6页,满分120分,考试时间为90分钟。

第I卷(选择题共75分)()1. ― What movie will be shown ______ TV tonight?― Shaolin Temple.A. inB. atC. fromD. on()2. When you travel to a city, you’d better buy a to get more information about it.A. newspaperB. suitcaseC. guidebookD. camera()3. Maybe I have heard of this girl before, but I can ______ remember her name.A. hardlyB. reallyC. mostlyD. easily()4. _______ trees were cut off. And many birds lost their home.A. Thousand ofB. Thousands ofC. Two thousandsD. Two-thousand()5. ― Are you full now?― No. I want ______ apple pies.A. more oneB. one moreC. more twoD. two more( ) 6. You ________ ever saw computers years ago, but now they are everywhere. A. sometimes B. usually C. hardly D. almost( ) 7. This is a very big company. It has______ workers. Do you want to work here?A. five thousandB. five thousandsC. five thousands ofD. five thousand of( ) 8. My job is feeding the cat. Now it’s your turn______ the dog.A. feedingB. to feedC. to have fedD. being fed( ) 9. My friend, Darren, is coming to visit us. I’m looking forward _______ him.A. meetB. meetingC. to meetD. to meeting( ) 10. —The radio is too noisy and there is nothing interesting on it. Why don’t you______ ?—All right. I’ll do that.A. turn it onB. turn it offC. turn it backD. turn it up()11. ― Have you ever________ to a zoo?― Yes, but only once. I visited Beijing Zoo last year.A. goneB. beenC. visitedD. seen()12. ― What are you ______ your suitcase for?― I’m ready for a trip.A. makingB. shuttingC. packingD. putting()13. — How long ______ the movie Aftershock ______?— For just several minutes.A. did; beginB. has; begunC. has; been onD. will; on()14. ― When did you start your math homework?― One hour ago, but I________ it yet.A. didn’t finishB. finishedC. have finishedD. haven’t finished()15. ― What a cool day! How about climbing Mount Tai?― ________. Let’s ask Yang Liu to go with us.A. Never mindB. Not at allC. Sounds greatD. Good luck()16. Please go to the station to _______ when the train to Beijing starts to leave.A. find forB. look forC. find outD. find()17. Mr. Green is rich. He ______ his dog ______ meat.A. feed, onB. feeds, onC. give, toD. feeds, for()18. ________ have you been in China?A. How longB. How oftenC. How soonD. How far()19. He does business in Shanghai. He ______ Shanghai the day after tomorrow.A. leaves forB. is leaving forC. left toD. is leaving to( ) 20. He _______ carefully but he could not ________ his teacher clearly.A. heard, listenB. listen, hearC. listened, hearD. heard, listened ( ) 21. He kissed his wife and then ______ goodbye ______ her when he left home.A. say, toB. said, toC. spoke, toD. said, with( ) 22. We need friends to ________, or we will feel ________.A. chat, aloneB. chat with, lonelyC. speak, lonelyD. talk with, alone ( ) 23. Mike is _______ honest man. I __________ him.A. an, believe onB. a , believe inC. an, believe inD. the, believe ( ) 24. This story ______ tells us how Bill Gates becomes successful.A. mostlyB. mainlyC. mostD. Both A and B( ) 25. ― Thank you very much for your nice present.― ___________.A. I’m very glad you like it.B.No, thanks.C. Oh, it’s nothing.D.No, it’s very cheap()26.---Have you ever______ to Hawaii before?---Yes, it’s beautiful. It is better than any_____ in AustraliaA. gone; beachB. been; beachC. gone; beachesD. been; beaches()27. When we got to the bus stop, the bus ______ for about half an hour.A. has leftB. leftC. has been awayD. had been away()28.---How long have you been a league member?--- ________ .A. A long time agoB. Since two yearsC. For about a yearD. In 2006()29.The parents encouraged their daughter______ her EnglishA. improvingB. improvesC. improvedD. to improve()30.The meeting has already started for about ten minutes but Henry______ yet.He must have something important to do.A. hasn’t led us to itB. has turned pointC. hasn’t appearedD. miss itⅡ. 完形填空(15分)阅读下列短文,选择可以填入空白处的最佳选项。

人教版九年级全册《第十四章 内能的利用》物理单元测试卷和答案详解

人教版九年级全册《第十四章 内能的利用》物理单元测试卷和答案详解

人教版九年级全册《第14章内能的利用》单元测试卷(2)一、选择题(每小题3分,共36分)1.(3分)如图所示,在试管内装适量水,用橡胶塞塞住管口,将水加热至沸腾一段时间后,橡胶塞被推出,管口出现大量“白气”。

此实验中,主要是通过做功改变物体内能的过程是()A.试管变热的过程B.水变热的过程C.水变成水蒸气的过程D.水蒸气推出橡胶塞的同时变成“白气”的过程2.(3分)关于内燃机,下列说法正确的是()A.内燃机的实际工作效率可达100%B.汽油机和柴油机使用同种燃料C.汽油机和柴油机均属于内燃机D.在做功冲程中,机械能转化为内能3.(3分)2019年春节期间热映的《流浪地球》被誉为开启了中国科幻电影元年。

这部电影讲述了多年以后太阳急速衰老膨胀,无法再给地球提供能量,人类为了拯救地球而点燃木星周围的可燃气体,逃离太阳系的故事。

其中“点燃木星”将地球推开相当于内燃机的()A.做功冲程B.压缩冲程C.吸气冲程D.排气冲程4.(3分)一种用于轻型低速飞机的活塞式航空发动机,它有多个气缸,气缸工作时经历进气、压缩、膨胀、排气四个过程,在这四个过程中,能为飞机提供动力的是()A.进气B.压缩C.膨胀D.排气5.(3分)实验装置如图所示,加热试管使水沸腾,对观察到的现象分析正确的是()A.玻璃管口冒出的“白气”是汽化成的水蒸气B.加热使水升温是通过做功的方式改变水的内能C.小叶轮的转动说明永动机是可以实现的D.小叶轮转动,水的内能转化为叶轮的机械能6.(3分)如图是汽车四冲程发动机的一个冲程示意图,下列说法正确的是()A.该冲程是做功冲程B.该冲程机械能转化为内能C.这种汽车对环境没有污染D.此发动机的效率可达90%7.(3分)将一瓶酒精用去三分之一,则剩余酒精的密度、比热容和热值()A.热值不变,密度、比热容变为原来的三分之二B.都变为原来的三分之二C.热值变为原来的三分之二,密度、比热容不变D.都不变8.(3分)西昌卫星发射中心用长征三号运载火箭,于2019年4月20日将第四十四颗北斗导航卫星成功送上太空。

最新人教版九年级英语全册Unit14单元检测卷及答案(精品试卷)

最新人教版九年级英语全册Unit14单元检测卷及答案(精品试卷)

第十四单元检测卷时间:120分钟满分:150分班级:________ 姓名:________ 得分:________ 第一部分听力(共2小节,满分30分)第一节听力选择(共15小题,每小题1.5分,共计22.5分)A.图片理解请听句子,从A、B、C中选择与句子意思相符的正确图片。

(听两遍)( )1.A. B. C.( )2.A. B. C.( )3.A. B. C.( )4.A. B. C.( )5.A. B. C.B.小对话理解请听小对话及问题,从A、B、C中选择正确的答案。

(听两遍)()6.A.Make cards for their teachers. B.Decorate their classroom.C.Buy some gifts for their teachers and friends.( )7.A.Grade Seven. B.Grade Eight. C.Grade Nine.( )8.A.By sending e­mails. B.By chatting on the Internet.C.By calling each other.( )9.A.In 2004. B.Since 2003. C.Before 2005.()10.A.He watched a football match. B.He watched a basketball match.C.He worked on his report.C.长对话理解请听长对话,根据其内容,从A、B、C 中选择能回答所给问题的最佳答案。

(听三遍)( )11.Where are the two speakers?A.In a park. B.In the library. C.In a restaurant.( )12.What class is the girl in?A.Class 5. B.Class 6. C.Class 7.( )13.How long will the girl stay at this school?A.For half a year. B.For one year. C.For two years.( )14.When will the girl take a class?A.At 3:00. B.At 4:00. C.At 2:00.( )15.Where is the girl from?A.Australia. B.America. C.China.第二节听力填空(共5小题,每小题1.5分,计7.5分) D.短文理解请听短文,根据其内容填写表格。

人教版九年级物理全一册《第十四章内能的利用》单元练习题-带参考答案

人教版九年级物理全一册《第十四章内能的利用》单元练习题-带参考答案

人教版九年级物理全一册《第十四章内能的利用》单元练习题-带参考答案学校:___________班级:___________姓名:___________考号:___________一、单选题1.下列关于热现象的说法正确的是()A.铁丝反复弯折处会发热,这是通过做功的方式改变了内能B.看到飞絮飘舞说明分子在不停地做无规则运动C.汽车排气管废气的温度越高,发动机的效率越高D.气体没有固定形状,表面气体分子间没有引力2.如图所示,把热水壶放在煤气灶上将水烧开时,水蒸气会顶起壶盖冲出壶外,这个现象与汽油发动机的哪个冲程原理相同()A.吸气冲程B.压缩冲程C.做功冲程D.排气冲程3.如图所示,甲、乙、丙三图的装置完全相同,用如图装置完成“探究不同物质吸热升温现象”和“比较质量相等的不同燃料燃烧时放出的热量”。

为了方便探究,下列物理量无需一样的是()A.三个装置的液体质量B.三个装置液体的初温C.甲、乙燃料燃烧时间D.甲、丙燃料单位时间内释放热量4.汽车已经成为现代生活中不可缺少的一部分,现代汽车多数采用汽油机作为发动机,如图所示是四冲程汽油机的一个冲程,对该冲程判断正确的是()A .吸气冲程B .内能转化为机械能C .机械能转化为内能D .做功冲程5.如图甲是某单缸四冲程汽油机某一冲程工作示意图,该汽油机的能量流向如图乙所示,某段时间汽油机完全燃烧0.1kg 的汽油放出的热量为4.2×106J ,水的比热容为34.210J )/(kg ⨯⋅℃,下列有关说法正确的是( )A .图甲所示冲程的能量转化是将内能转化为机械能B .若汽油机飞轮转速为1800r/min ,则汽油机1s 对外做功30次C .1标准大气压下,汽油机完全燃烧0.1kg 汽油,可使汽车水箱中50kg 、20℃的冷却水升温20℃D .用水做汽油机的冷却液是因为水的沸点较高6.天问一号负责执行中国第一次自主火星探测任务,于2020年7月23日在文昌航天发射场发射升空。

(人教版)九年级物理全一册《第十四章内能的利用》单元测试卷-带答案

(人教版)九年级物理全一册《第十四章内能的利用》单元测试卷-带答案

(人教版)九年级物理全一册《第十四章内能的利用》单元测试卷-带答案一、单选题1.多数汽油机是由吸气、压缩、做功、排气四个冲程的不断循环来保证连续工作的,从能量转化的角度看,存在着内能转化为机械能的过程的是A.吸气冲程B.压缩冲程C.做功冲程D.排气冲程2.2022年10月31日,搭载“梦天”实验舱的“长征五号B遥四”运载火箭成功发射。

火箭加速升空的过程中,燃料燃烧提供火箭升空所需的能量。

随着燃料质量不断减小,其热值()A.变大B.变小C.不变D.无法判断3.如图,2023年10月26日11时14分,搭载神舟十七号载人飞船的长征二号F遥十七运载火箭在酒泉卫星发射中心点火发射,卫星顺利进入预定轨道,发射任务获得圆满成功。

长征二号F遥十七运载火箭用液氢作为燃料是利用液氢具有()A.较大的比热容B.较高的热值C.较小的密度D.较低的沸点4.正在煮饭的高压锅限压阀被气流顶起,下列选项中汽油机的各冲程与其原理相同的是()A.B.C.D.5.下列关于四冲程内燃机的说法中不正确的是()A.热机效率越高,所做的有用功就越多B.汽油机在吸气冲程中吸入汽缸的是汽油和空气的混合物C.汽油机工作时,一个工作循环对外做功一次D.尽量减少热机内部各部件间的摩擦可以提高效率6.如图所示四种内燃机工作时的示意图,一个工作循环的正确顺序是().A .甲,乙,丙,丁B .丙,丁,乙,甲C .甲,丁,乙,丙D .甲,丙,乙,丁7.关于汽油机的四个冲程,下列说法正确的是( )A .吸气冲程,吸入的成分只有汽油B .压缩冲程,将内能转化为机械能C .做功冲程,当转速是1800r/min ,1秒钟完成30个做功冲程D .排气冲程,废气带走了大部分的能量。

8.汽油机甲,飞轮每分钟转2400转,汽油机的汽缸容积为150cm 3,满负荷工作时做功冲程燃气的平均压强为2.0×106Pa ,且甲汽油机一分钟消耗25g 汽油。

汽油机甲与汽油机乙的效率比值为5∶4,汽油机甲的功率是乙的2.5倍,则汽油机甲的功率和甲、乙汽油机相同时间的油耗之比为( )(汽油的热值为4.8×107J/kg )A .3.6×106W ;2∶1B .6000W ;2∶1C .3.6×106W ;1∶2D .6000W ;1∶2二、填空题9.燃油汽车的核心部件是热机,通过 冲程将废气排出汽缸,造成大气污染,电动汽车正逐步替代燃油汽车。

最新部编人教版九年级物理全册第十四章单元测试题及答案

最新部编人教版九年级物理全册第十四章单元测试题及答案

九年级物理单元测试题第十四章内能的利用学校:___________姓名:___________班级:___________座号:___________分数:___________一、单项选择题(每小题3分,共21分)1.如图中的四个冲程不是按照热机正常工作的顺序排列的,你认为让汽车获得动力的冲程是()2.如图所示实验,试管口木塞冲出过程()A.试管口出现的白雾是水蒸气B.试管口出现白雾说明水蒸气内能增加C.能量转化情况与内燃机压缩冲程相同D.水蒸气对木塞做功,水蒸气的内能减少3.关于四冲程汽油机,下面说法中正确的是()A.在做功冲程,内能转化为机械能B.汽油机是利用机械能转化成内能的机器C.在压缩冲程,内能转化为机械能D.四个冲程依次为吸气、做功、压缩、排气4.汽车油箱的汽油用掉一半后,剩下的汽油中,不变的物理量有()A.质量密度热值B. 质量密度比热容C. 密度热值比热容D. 质量热值比热容5.关于热机,下列说法正确的是()A.汽油机顶部有喷油嘴,柴油机顶部有火花塞B.柴油机在吸气冲程中,将柴油和空气的混合气吸入气缸C.汽油机和柴油机除了做功冲程外,其他三个冲程都是依靠飞轮的惯性完成的D.改进技术后,热机的效率可以达到100%6.甲乙两台柴油机,甲的效率低于乙的效率,意义是()A.甲的功率大于乙的功率B.甲消耗的燃料多于乙消耗的燃料C.乙将燃料燃烧放出的热量变成有用功的那部分能量的比例比甲大D.工作相同时间甲消耗的燃料一定比乙少7.下列对能量转化描述不正确的是()A、子弹打入墙壁过程中机械能转化为内能B、电动自行车前进,机械能转化为电能C、坠落的流星,机械能转化为内能D、内燃机工作,化学能转化为内能,又转化为机械能二、填空题(每空1分,共21分)8.如图所示,一配有活塞的厚壁玻璃筒里放一小团蘸了乙醚的棉花,当迅速压下活塞时,可看见桶内棉花燃烧起来。

这是通过的方式使玻璃筒内的空气增加、温度升高的。

【最新】人教版英语九年级Unit14单元练习(含答案)

【最新】人教版英语九年级Unit14单元练习(含答案)

【最新】⼈教版英语九年级Unit14单元练习(含答案)最新教学资料·⼈教版英语Unit14 I remember meeting all of you in Grade 7.单元练习⼀、听⼒(听⼒)(共20⼩题;共20分)第⼀节听下⾯5段对话,每段对话后有⼀个⼩题,从题中所给的A、B、C三个选项中选出最佳选项。

每段对话读⼀遍。

1. Why wouldn't Mary go to see the doctor?A. Because she doesn't feel ill.B. Because she has to get ready for a test.C. Because she has taken some medicine.2. What's the woman's address?A. 59 Greenfield.B. 59 Road of Greenfield.C. 59 Greyfield Road.3. How did John feel about his holiday?A. Interesting.B. Not very good.C. Very lucky.4. How did Mary come here?A. By car.B. By plane.C. By train.5. What's the time now?A. 6:30.B. 6:50.C. 7:00.第⼆节听下⾯4段对话,每段对话后有⼏个⼩题,从题中所给的A、B、C三个选项中选出最佳选项。

每段对话读两遍。

听第1段对话,回答第6-7⼩题。

6. What events do they have at Dale's school?A. A school trip.B. An Art Festival.C. An English speech contest.7. When is it?A. In April.B. In December.C. In August.听第2段对话,回答第8-10⼩题。

人教版九年级英语Unit14单元测试题及答案

人教版九年级英语Unit14单元测试题及答案

⼈教版九年级英语Unit14单元测试题及答案Unit14I remember meeting all of you in Grade7.单元测试02⼀、听⼒理解(20⼩题,每⼩题1分,共20分)第⼀节听下⾯5段对话。

每段对话后有⼀个⼩题,从题中所给的A、B、C三个选项中选出最佳答案。

每段对话读两遍。

1.What does the man remember?A.Learning to play the keyboard.B.Learning to play the violin.C.Learning to play the guitar.2.What’s the man’s plan?A.He will join more clubs.B.He will learn to play basketball.C.He will be more hard-working.3.What’s Mr.Wang’s job?A.A Chinese teacher.B.A math teacher.C.A P.E.teacher.4.Who made the speech?A.Linda.B.Peter.C.Henry.15.How has the man changed?A.He doesn’t hate English now.B.He doesn’t like English now.C.He won’t learn English any more.第⼆节听下⾯⼏段对话或独⽩。

每段对话或独⽩后有⼏个⼩题,从题中所给的A、B、C三个选项中选出最佳答案。

每段对话或独⽩读两遍。

听下⾯⼀段对话,回答第6⾄第7两个⼩题。

6.What does Helen want to be in the future?A.She wants to be a singer.B.She wants to be a reporter.C.She wants to be a dancer.A.An engineer.B.A doctor.C.A manager.听下⾯⼀段对话,回答第8⾄第10三个⼩题。

人教版九年级全一册第十四章内能的利用单元练习(含答案)

人教版九年级全一册第十四章内能的利用单元练习(含答案)

人教版九年级全一册第十四章内能的利用单元练习一、单选题1.下列有关说法正确的是()A.压缩冲程中柴油机气缸里的气体内能减小B.物体吸收热量后,内能增大,温度一定升高C.搓手时感到暖和是因为产生了热量D.给手机充电时是将电能转化为化学能2.小丹同学在笔记本上记录了以下四条结论,其中错误的是()A.煤油温度计是根据液体热胀冷缩的性质制成的B.家用洗衣机是典型的热机C.受到平衡力作用的物体一定保持静止状态或匀速直线运动状态D.物体是由大量分子组成的3.如图所示为某单缸四冲程内燃机工作示意图,下列说法中正确的是()A.一个完整的工作循环顺序是:乙甲丁丙B.丁冲程发生的能量转化为内能转化为机械能C.只有甲冲程获得动力,其他冲程都是靠惯性运转的D.丙冲程中排出的废气没有任何利用的价值4.下列说法正确的是()A.热量总是从内能大的物体向内能小的物体传递B.雪花纷飞,说明分子不停地做无规则运动C.同一物体,温度降低得越多,放出的热量越多D.汽油机的压缩冲程,汽缸内的混合物内能增加,温度升高5.2021年5月29日,我国用长征7号运载火箭成功发射了天舟二号货运飞船,5月30日,天舟二号货运飞船与中国空间站的天和核心仓完成了交会对接。

下列说法正确的是()A.天舟二号货运飞船加速上升过程中机械能守恒B.天舟二号货运飞船加速上升过程中动能转化为重力势能C.天舟二号货运飞船加速上升过程中重力势能转化为动能D.对接成功后天舟二号货运飞船与天和核心仓处于相对静止状态6.汽油机在吸气冲程吸入气缸的是()A.汽油和空气B.柴油C.水蒸气D.空气7.下列关于汽车的说法中错误的是()A.给汽车加油时能闻到汽油的味道,说明分子在不停地做无规则运动B.常用水作汽车发动机的冷却液,是因为水的比热容较大C.通过增加氧气的方法使汽油燃烧越充分,则汽油热值越大D.尽量保持机械部件之间有良好的润滑可以提高汽车的效率8.如图所示的实验,试管口木塞冲出过程中,下列说法错误的是()A.试管口出现的白雾是水蒸气液化形成的B.试管口出现白雾说明水蒸气内能增加C.能量转化情况与内燃机做功冲程相同D.水蒸气对木塞做功,水蒸气的内能减少9.如图是汽油机工作时的四个冲程,下列说法正确的是()A.活塞在气缸内往复运动一次,该汽油机对外做功一次B.甲是压缩冲程,是将内能转化为机械能,丁是做功冲程是将机械能转化为内能C.该内燃机的四个冲程正确的工作顺序是乙→甲→丁→丙D.汽油机吸气冲程气缸吸进的物质只有汽油10.如图所示的轮船,动力是由柴油机提供的,下列说法正确的是()A.以轮船为参照物货物是运动的B.轮船受到的浮力和货物对轮船的压力是一对平衡力C.柴油机效率高,是因为柴油的热值大D.柴油机是利用内能做功的机器11.小明用酒精灯将质量为100g、初温为20℃的水加热到90℃(未沸腾),共燃烧了7g酒精[c水=4.2⨯103J/(kg℃,酒精的热值为q=3⨯107J/kg]。

人教版九年级物理上册第十四章单元测试卷试卷附答案

人教版九年级物理上册第十四章单元测试卷试卷附答案

第十四章内能的利用(总分:100分时间:90分钟)一、选择题(本题包括10小题,每小题3分,共30分。

每小题只有1个选项符合题意)1.某机器的能量流向图如图所示,据此推测该机器可能是( )A.热机B.电动机C.发电机D.电热水器2.“可燃冰”作为新型能源,有巨大的开发潜力.同等条件下,“可燃冰”完全燃烧放出的热量达到煤气的数十倍.这表示“可燃冰”的( )A.热量很大B.温度很高C.热值很大D.比热容很大3.关于热值的下列说法中正确的是( )A.燃料燃烧时,随着不断放热,它的热值越来越小B.采取措施使燃料燃烧更充分,就可以提高燃料的热值C.任何燃料实际燃烧时放出的热量,都比按热值计算出来的数值小D.煤油的热值比酒精大,就是说煤油完全燃烧放出的热量比酒精多4.对热学概念的理解,下列说法正确的是( )A.水的比热容是4.2×103 J/(kg•℃),表示1 kg的水温度升高(降低)1 ℃吸收(放出)4.2×103 J的热量B.热量是指物体具有能量的多少C.温度高的物体具有的内能一定多D.热值大的燃料完全燃烧放出的热量一定多5.某热机的效率为20%,这表明做100 J的有用功时( )A.要消耗20 J的燃料内能B.要向外散失80 J的热量C.要消耗燃烧后能放出500 J内能的燃料D.要消耗80 J的燃料内能6.为了提高热机的效率,技术人员正在尝试用一种不易传热又耐磨、耐高温的陶瓷材料制作发动机的零件,这样做的好处是( )A.可以使这种新热机的效率达到100%B.不能提高热机的效率,但可以增大其功率C.可以减轻热机的重量,且可以增大热机的功率D.可以提高热机效率7.如图所示,在一个配有活塞的厚玻璃筒里放一小团硝化棉,用力把活塞迅速下压,棉花就会立即燃烧.根据该实验现象,下列结论正确的是( )A.棉花燃烧过程是化学能转化为内能B.活塞下压过程中,气体的内能减小C.气体容易被压缩,是因为气体分子间距离较小D.活塞下压过程的能量转化形式与热机做功冲程能量转化相同8.用打桩机打桩,打桩锤从5 m高处自由落下时,锤与桩因冲击力作用表面温度升高,这说明( )A.机械能守恒B.动能守恒C.势能守恒D.能量守恒9.关于四冲程汽油机的工作过程有以下几种说法,正确的是( )①在压缩冲程中,是机械能转化为内能;②在做功冲程中,是内能转化为机械能;③只有做功冲程是燃气对外做功;④汽油机和柴油机的点火方式相同.A.只有②③B.只有①③C.只有②④D.只有①②③10.在下面四幅图所表示的情景中,属于内能转化为机械能的是( )二、填空题(本题包括6小题,每空2分,共30分)11.(8分)汽车是我们生活中常用的交通工具,汽油机是汽车的动力设备.单缸汽油机工作的四个冲程中,将内能转化为机械能的是冲程;主要利用惯性来工作的冲程有、、 .12.(6分)汽车发动机熄火后,在平直的公路上行驶的越来越慢,在这个过程中,汽车的______能的一部分转化为车轮和地面的能.此时能量转化遵循定律. 13.(4分)用打气筒给气球打气,经测量发现球皮表面温度升高,这一现象说明对气体,气体内能增大.气球在下落过程中,它的重力势能将 .14.(4分)夏天空调工作时,将室内能量转移到室外,是因为消耗了能,才能把热量转移出来,从而使室内变凉爽,在空调工作时(填“遵守”或“不遵守”)能量守恒定律.15.(4分)在吹气球时,吹大了的气球没握住,它叫啸着飞跑了!你及时捡起气球会发现它的嘴部温度(填“变高”“变低”或“无变化”).当气球内气体喷出来时,发生的能量转化情况是.16.(4分)有台柴油机在一个工作循环中消耗了10 g柴油(热值q=3.3×107 J/kg),这些柴油完全燃烧产生的热量是 J;若这台柴油机的效率为40%,则一个工作循环中输出的有用机械能为 J.三、实验探究题(本题包括1小题,共12分)17.(12分)(1)某同学用如图装置测酒精的热值.加热前酒精灯的质量为m1,加热一段时间后变为m2;烧杯中水的质量为M,水的初温t1,末温t2,水的比热容用c表示.用以上符号表达该同学测酒精热值的计算式: .该同学测算发现,测量值比课本中的“标准值”小很多,请你写一条产生该误差的原因: .(2)有一种“涡轮增压”(T型)轿车,通过给发动机更足量的空气使汽油更充分地燃烧,比普通轿车(L型)更节能,排气更清洁.同样的汽油(97#)加在T型轿车内比加在L型轿车内热值.(填“更大”或“一样大”或“更小”)四、简答题(本题包括1小题,共8分)18.(8分)某校师生在学习了能量的转化与守恒以后,组织兴趣小组调查学校几种炉灶的能量利用效率.他们发现学校的一个老式锅炉烧水时,经常冒出大量的黑烟,且烧水时锅炉周围的温度很高,锅炉的效率很低.(1)请你根据调查中发现的现象分析此锅炉效率低的原因,并提出相应的改进措施.(2)要减少烟气带走的热量,可以采用什么办法?五、计算题(本题包括2小题,每小题10分,共20分)19.(10分)把5 kg 40 ℃的水烧开,需要完全燃烧多少kg的干木柴?[已知干木柴的热值为1.2×107 J/kg,水的比热容为 4.2×103 J/(kg•℃),外界为标准大气压,并且燃料完全燃烧放出的热量全部被水吸收]20.(10分)莲莲家的汽车尾部上标有“2.0T”的字样,其中“T”就是“涡轮增压”,是利用高温、高压的废气去冲击“废气涡轮”高速旋转,来带动同轴的“进气涡轮”也高速旋转,从而增加进气量并增大进气气压,使汽油燃烧更充分,燃气压强更大,同时也减少了废气中的有害物质,达到提高发动机的效率和减少废气污染的目的.这辆汽车的最低油耗可达0.2 kg/(kW•h),已知汽油的热值为4.6×107 J/kg.[温馨提示:最低油耗是指燃烧最少的汽油获得最大有用功的能量;0.2 kg/(kW•h)表示获得1 kW•h能量消耗0.2 kg汽油.](1)0.2 kg的汽油完全燃烧时放出的热量为多少?(2)该汽车发动机的效率最高可达多少?(结果保留整数)第十四章内能的利用参考答案一、选择题(本题包括10小题,每小题3分,共30分。

人教版九年级物理全一册《第十四章内能的利用》单元练习题-附答案

人教版九年级物理全一册《第十四章内能的利用》单元练习题-附答案

人教版九年级物理全一册《第十四章内能的利用》单元练习题-附答案学校:___________班级:___________姓名:___________考号:___________一、单选题1.瓦特根据水蒸气顶起壶盖的现象,改良了蒸汽机,以下与顶起壶盖过程能量转化方式相同的是()A.B.C.D.2.将一瓶酒精用去三分之一,则剩余酒精的密度、比热容和热值()A.都不变B.都变为原来的三分之二C.热值不变,密度、比热容变为原来的三分之二D.热值变为原来的三分之二,密度、比热容不变3.关于热机,下列说法正确的是()A.热机效率越高,表明热机做的有用功越多B.四冲程汽油机在工作过程中,进气门和排气门同时关闭的冲程是做功冲程和压缩冲程C.柴油机上安装一个笨重的飞轮,是为了提高它的效率D.柴油机的效率比汽油机的高,这是因为柴油的热值比汽油的大4.如图甲为航母上简化的蒸汽弹射装置,能带动舰载机在两秒钟内达到起飞速度,如图乙为汽油机的工作冲程。

下列判断不正确的是()A.舰载机获得的牵引力是因为汽缸内的蒸气体积膨胀,从而推动活塞B.汽缸内的蒸汽推动活塞后,内能增加C.从能量转化角度讲,蒸汽弹射装置工作时与图乙中C所示的原理相似D.从能量转化角度讲,图乙中B冲程是把机械能转化为内能5.端午节有煮粽子的习俗。

对下列煮粽子出现的现象解释正确的是()A.锅盖上方的白雾是水蒸气B.燃料燃烧是内能转化为机械能C.加热粽子是利用做功增加内能D.粽子的香味溢出属于扩散现象6.下面关于热现象的四个图认识正确的是A.甲图烧杯中的水沸时继续吸热,温度保持不变,内能不变B.乙图是两个压紧的铅块能吊起一个重物,两铅块未被拉开是因为铅块分子间只存在引力C.丙图中由于砂石的比热容比海水的比热容小,导致沙漠地区昼夜温差比沿海地区大D.丁图是内燃机的压缩冲程,将机械能转化为内能7.关于内能,有以下四个观点,你认为正确的是()A.汽油机在做功冲程中将机械能转化为内能B.物体温度越低,内能越小,所以0℃的物体没有内能C.沿海地区昼夜温差较小,主要原因是水的比热容较大D.两物体相互接触时,热量总是从内能大的物体转移到内能小的物体8.近年来,我国民用汽油发动机技术取得了长足进步,接近国际先进汽油发动机的水平。

人教版九年级物理全一册《第十四章内能的利用》单元练习题-附参考答案

人教版九年级物理全一册《第十四章内能的利用》单元练习题-附参考答案

人教版九年级物理全一册《第十四章内能的利用》单元练习题-附参考答案学校:___________班级:___________姓名:___________考号:___________一、单选题1.2023年11月30日,我国首台中速大功率氨燃料(NH3)发动机在大连点火成功,四冲程氨燃料内燃机在一个工作循环中,氨燃料的燃烧发生在()A.吸气冲程B.压缩冲程C.做功冲程D.排气冲程2.为减少能源消耗,保护环境,必须合理利用能源,下列方法中对提升热机效率有用的是()A.尽量使燃料充分燃烧B.用导热性更好的材料做内燃机汽缸C.增加燃料的质量D.让燃料放出的热量全部用来做有用功3.把一杯酒精倒掉一半,则剩下的酒精()A.比热容变小,密度不变,热值不变B.比热容变小,密度不变,热值变为原来的一半C.比热容、密度、热值都变为原来的一半D.比热容、密度、热值都不变4.下列说法正确的是()A.改进技术后,热机的效率可以达到100%B.热机效率越高,功率一定越大C.热值由燃料本身决定,与燃烧质量和燃烧状态无关D.热值大的燃料完全燃烧,放出的热量一定多5.如图是单缸四冲程内燃机一个工作循环的示意图,当内燃机工作时,将机械能转化为内能的冲程是()A.B.C.D.6.关于温度、热量和内能,下列说法正确的是()A.0℃的冰块内能为0B.温度高的物体含有的热量多C.两个发生热传递的物体之间一定存在温度差D.热量总是从内能大的物体向内能小的物体转移7.太阳能是人类优先开发和利用的新能源之一,关于太阳能的利用,下列说法正确的是()A.图甲中,绿色植物通过光合作用将太阳能转化为化学能B.图乙中,太阳能热水器通过做功方式将太阳能转化为水的内能C.图丙中,太阳能交通信号灯将太阳能直接转化为信号灯的光能D.图丁中,太阳能飞机将太阳能转化为飞机的机械能,转化效率可达100%8.一台单缸四冲程汽油机的飞轮转速是1800r/min,此汽油机每秒钟内()A.完成30个冲程,做功15次B.完成60个冲程,做功15次C.完成60个冲程,做功30次D.完成120个冲程,做功30次9.明朝宋应星所著《天工开物》是中国古代一部综合性的科学技术著作,如图所示四幅图选自《天工开物》,下列说法正确的是()A.挂上重物后弓发生形变,弓的重力势能增加B.采珍珠人潜入水下越深所受水的压强越大,浮力也越大C.“透火焙干”应用了热传递的方法使水内能增大,温度升高D.鸟铳(又称火枪)发射弹丸时,弹丸的机械能转化为内能10.如图,是航母上简化的蒸汽弹射装置,能带动舰载机在两秒钟内达到起飞速度。

(完整)新人教版九年级第十四单元精选练习题附答案(2)

(完整)新人教版九年级第十四单元精选练习题附答案(2)

新人教版九年级第十四单元精选练习题附答案Unit 14 I remember all of you in Grade 7.第一课时Section A (1a 〜2d)01 基础过关I•根据句意及汉语提示填写单词。

1. ___________________ We are doing a (调查)about the most popular sport among the stude nts.2. ______ (将要)we meet at the school gate tomorrow?3. Our students achieve very high ______ (水平)of musical ability.4. Our teacher is showing us a new _______ (方法)of writing.5. Jane's husband is ill and she has to do ______ (两倍的)work.n .用方框中所给单词的适当形式填空。

see, finish , row, in struct, clear6. I sit i n _______ Three. Just beh ind Nan cy.7. Read these _______ carefully before you use the mach ine.8. We should guide the stude nts _______ the survey report.9. The teacher speaks loudly so that the stude nts can hear her ______ .10. Didn't you remember ______ me here last year?川.单项选择。

(选出与句子画线部分意义最相近的一项)()11.(泸州中考)Please remember ______ your notebook here tomorrow.A. bringsB. broughtC. bringingD. to bring()12.(武汉中考)—Will you fix up the machine according to the _______ , David?—No problem.A. in structi onsB. inven ti onsC. in vitati onsD. in terviews()13. Miss Wang is always patie nt ________ me.A. toB. aboutC. withD. in()14. I wonder how they are going to explain for losing three games ________ ?A. in gen eralB. all of a sudde nC. to our surpriseD. in a row()15. Luke told me to take a break from running.A. have a breakB. take a restC. have a restD. all the aboveIV .根据汉语意思完成句子,每空一词。

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新人教版九年级第十四单元精选练习题附答案Unit 14 I remember all of you in Grade 7.第一课时Section A(1a~2d)01基础过关Ⅰ. 根据句意及汉语提示填写单词。

1. We are doing a ________(调查) about the most popular sport among the students.2. ________(将要) we meet at the school gate tomorrow?3. Our students achieve very high ________(水平) of musical ability.4. Our teacher is showing us a new ________(方法) of writing.5. Jane's husband is ill and she has to do ________(两倍的) work.Ⅱ.用方框中所给单词的适当形式填空。

see,finish,row,instruct,clear6. I sit in ________ Three. Just behind Nancy.7. Read these ________ carefully before you use the machine.8. We should guide the students ________ the survey report.9. The teacher speaks loudly so that the students can hear her ________.10. Didn't you remember ________ me here last year?Ⅲ. 单项选择。

(选出与句子画线部分意义最相近的一项)( ) 11. (泸州中考)Please remember ________ your notebook here tomorrow.A. bringsB. broughtC. bringingD. to bring( ) 12. (武汉中考)—Will you fix up the machine according to the ________,David?—No problem.A. instructionsB. inventionsC. invitationsD. interviews( ) 13. Miss Wang is always patient ________ me.A. toB. aboutC. withD. in( ) 14. I wonder how they are going to explain for losing three games ________?A. in generalB. all of a suddenC. to our surpriseD. in a row( ) 15. Luke told me to take a break from running.A. have a breakB. take a restC. have a restD. all the aboveⅣ. 根据汉语意思完成句子,每空一词。

16. 他只不过是个孩子,你应该对他耐心点。

He is just a child,so you should ________ ________ ________ him.17. 他们失败之后决定更拼搏,并且投入更多的努力。

They decided to work harder and ________ ________ ________ ________ after their failure.18. 去年她连续四次获胜。

She won four times ________ ________ ________ last year.19. 因为你,我们没有按时完成这项任务。

We didn't finish the task on time ________ ________ you.20. 在日常生活中,我的老师经常帮助我解决困难。

My teacher often helps me ________ ________ difficulties in daily life.02能力提升Ⅴ. 补全对话。

根据对话内容,从方框中选择合适的选项补全对话。

(其中有两项多余)A: Are you going to leave school at the end of the term?B: 21A: What are you going to do?B: I want to find a job. Many jobs are offered in the newspapers.A: 22B: A tour guide. I want to travel around the world.A: That sounds interesting!B: I think so. 23A: I'm going to be a teacher. 24B: I hope your dream will come true.第二课时Section A(3a~3c)01基础过关Ⅰ. 根据句意及汉语或首字母提示填写单词。

1. You have to ________(克服) your shortcomings.2. What a ________(混乱) your room is! Please clean it up.3. Her son g________ from Harvard last year.4. No matter what happens,do remember to keep your c________.5. I'll try to be a loving and c________ person in my life.Ⅱ.用方框中所给单词的适当形式填空。

excite,we,love,care,graduate6. Their school is very beautiful,________ is even more beautiful.7. Helen is a ________ woman and she is always considering others more than herself.8. Luke worked as a manager after ________ from university.9. I'll never forget the ________ of the school art festival.10. Jessica is a ________ girl with two big eyes.Ⅲ. 根据汉语意思完成句子,每空一词。

11. 当我们面对困难时,我们应该沉住气。

We should ________ ________ ________ when we face difficulties.12. 当我回想起那些日子,我禁不住笑了。

When I ________ ________ ________ those days,I couldn't help laughing. 13. 迈克在他妈妈出去的时候把卧室搞得一团糟。

Mike ________ ________ ________ in the bedroom when his mother went out.14. 彼得来自异国他乡。

Peter is ________ ________ ________ ________.15. 我们在准备期末测试。

We're ________ ________ the final exam.02能力提升Ⅳ. 完形填空。

When he was 12 years old,the boy did something he only later realized probably hurt his teacher. He was,after all,a(n) 16 at that time. When he was older and wiser,he wanted to 17 this teacher and say sorry. 18 the teacher seemed to have disappeared.In the past thirteen years,the boy,Larry Israelson,19 turned to the Internet,typing the teacher's name into search boxes. He found 20 .But he never stopped searching. Last month—by now nearly 42 years after the event happened— 21 succeeded.Excited,he started reading a news report I had written in a magazine about a program that helps kids. He studied a photo and found his teacher,who was a volunteer. He then emailed me and asked me to introduce him to the teacher,James Atteberry.I got in touch 22 Atteberry. He agreed to talk to his student. Soon,I received a letter. I immediately sent it to Atteberry.As Atteberry read the 23 ,he was brought back to 1973,when he was a history teacher. In the letter,Larry said,“I am truly 24 for leaving your Seventh Grade class during the 1972—1973 school year. I don't have many memories from school,but at the top of my exercise book you wrote ‘You will go far in life.’25 my school life,I was proud to be your student.”When it comes to apologies,no one gets a pass. Everyone needs to receive one,and everyone needs to give one.( ) 16. A. kid B. teacher C. old man D. famous person( ) 17. A. refuse B. believe C. find D. leave( ) 18. A. Since B. But C. Because D. So( ) 19. A. never B. hardly C. seldom D. often( ) 20. A. everything B. something C. nothing D. anything( ) 21. A. you B. they C. she D. he( ) 22. A. for B. with C. about D. to( ) 23. A. report B. story C. book D. letter( ) 24. A. sorry B. happy C. proud D. excited( ) 25. A. Looking forward to B. Looking back atC. Talking back toD. Catching up with第三课时Section A(4a~4b)01基础过关Ⅰ. 根据句意及首字母或汉语提示填写单词。

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