第一篇:2012年中大附中小升初英语真题
2012年中大附中小升初真题
时间:60分钟,满分100分。
第一卷(75分)
一、语音知识。(5分)
在下列各题的四个选项中选出一个划线部分读音不同的选项。
()1.A.climbB.beefC.babyD.before
()2.A.naughtyB.warmC.notD.walk
()3.A.hopedB.surprisedC.diedD.borrowed
()4.A.riceB.sisterC.seeD.zoo
()5.A.lunchB.headacheC.benchD.each
二、语言知识与运用。(20分)
在下列各题的四个选项中选择一个最佳的答案。
()6.---Do you often play __________ table tennis ?
---Yes, usually after __________ supper.A.the…theB.不填…不填C.不填…theD.the…不填
()7.---Can you ________ Japanese ?
---Yes, but I can only _______ some simple words and sentences.A.speak … speakB.speak…sayC.say…say…D.say… speak
()8.---Is the novel The Adventures of Tom Sawyer __________ ?
---No, it’s Helen’s.I left _________ at home.A.your’s…mineB.your’s …itC.yours…itD.yours…mine
()9.---________ drink does your husband like better, coffee or tea ?
---________._ He likes CoCo Cola.A.What..BothB.What..NeitherC.Which..BothD.Which… Neither
()10.---Hi, Doris!Do you have anything __________ this weekend ?
---Yes.I’m going to take part in my grandmother’s birthday party.It is her __________ birthday.A.doing…eightiethB.doing…eightiethC.to do…eightiethD.to do… eightieth
()11.---We will have a hiking trip tomorrow, but ____ shall we meet?
---Let’s make it __________ half past nine.A.where…atB.when…inC.when…atD.where..in
()12.---I’m sorry, Lucy.I can’t go for the picnic this Saturday.---_________ Let’s make is __________ half past nine.A.BecauseB.AsC.ButD.For
()13.Mrs White is as _____ as Mrs Brown, but she looks much ____.A.old, youngerB.old, youngC.older, youngerD.older, younger
()14.---Would you please drive __________? My plane is taking off(起飞)soon.---I’d love to, but safety first.A.fasterB.betterC.more carefullyD.much quickly
()15.---I called you yesterday evening, but no one answered.---Well, maybe I __________ in the garden.A.workB.am workingC.will workD.was working1
()16.---Where __________ she put knife ?
---She put it on the table.A.didB.needn’tC.isD.was
()17.---Where __________ she put the knife?
---No, you __________.I have asked others to do it.A.can’tB.doesC.isD.was
()18.---Linda, _________ can we go to the cinema ?
---We can ask Tom ________ together with us.He has got a car.A.Who… to goB.How… to goC.Who… goesD.How… goes
()19.---Would you like to drink some tea ?
---Thanks.Ah, __________ nice tea!
A.nicely… goodB.how aC.what aD.how
()20.---My sister has a __________ English teacher.---That’s why she can learn English so __________.A.nicely… goodB.nice… goodC.nice… wellD.nicely…well
()21.---My daughter is ill in hospital these days.---__________.A.Really?B.I’m sorry to hear thatC.It’s hard to say.D.Thank you for telling me
()22.It is his __________ time to say for yourself?
A.fourthB.the forthC.forthD.the fourth
()23.---Do you have __________ to say for yourself ?
---No, nothing.A.anything importantB.something importantC.important anythingD.important something
()24.__________ me and __________ go alone.It’s dangerous.A.To come after, don’tB.Come after, not toC.Come after, don’tD.To come after, not to
()25.---You mean “__________” ?
---Yes, I look after them every day.A.much sheepB.many she sheepC.a sheepD.many sheeps
三、完形填空。(20分)
(A)
“What’s the matter, Mum ?”
As soon as I entered the door, I found that my mum was unhappy.Usually she would open the door and welcome me with a smile!
“She is dying,”was to water the flower.because of too much sunshine and water.It’s
()26.A.loudlyB.excitedlyC.quicklyD.sadly
()27.A.movedB.wentC.ranD.lived
()28.A.tasteB.smellC.soundD.size
()29.A.carefullyB.carefulC.happilyD.luckily
()30.A.soB.butC.andD.after
()31.A.atB.forC.toD.by
()32.A.timeB.placeC.waterD.sunshine
()33.A.ifB.ButC.BecauseD.Or
()34.A.usefulB.importantC.badD.good
()35.A.howB.thatC.whichD.what
(B)
New rules and behavior standards(行为标准)for middle schoolbest students won’t only have high marks.The following are some of the new rules.Tell the truth.Have you ever copied(抄
袭)from others _37__ an exam ? __38__ it again.That is not what an honest student should do._39_ you have played computer games for two hours, don’t tell your parents you have done your homework for two hours.Good students should love animals and people.April is Bird-loving Mouth in China.Is your school do保护)__41__.Use the Internet carefully.The Internet can be useful for your studies.But some things on the Internet()36.A.AB.AnC.TheD.不填
()37.A.behindB.inC.offD.without
()38.A.Not doB.DoC.Don’t doD.Doing
()39.A.BecauseB.SoC.ButD.If
()40.A.celebrateB.celebratingC.to celebratingD.celebrated
()41.A.themB.itC.theyD.themselves
()42.A.youB.youselfC.yourselfD.yours
()43.A.lateB.latelyC.earlyD.fast
()44.A.isn’tB.aren’tC.areD.is
()45.A.badB.luckyC.beautifulD.good
四、阅读理解。(30分)
(A)
Green Restaurant has many kinds of food.Here is a menu.(菜单)
Appetizer(开胃小吃)
Salad Roll: $1.75
Fried Fish : Small(4 pieces)$ 4.95;Large(8pieces)$8.95
Brown Rice: $1.5
Soup:
Egg Soup: $1.25
Chicken with Fresh Mushroom Soup: 4.95$
Vegetables:
Spiced(辣的)onion : $6.95
Chinese cabbage:$6.95
Chinese Broccoli with Tomato Sauce: $7.95
Meat:
Chicken with Fresh Broccoli: $8.5
Pork with Fresh Vegetable: $8.95
Beef with Broccoli: $8.95
Beef with Green Pepper: $8.95
()46.How many kinds of food are there in Green Restaurant?
A.4B.5C.6D.7
()47.Whatkinds of food is Salad Roll ?
A.SoupB.VegetableC.MeatD.Appetizer
()48.How many pieces of fish are there is the same as the one of __________.A.6B.4C.8D.7
()49.The price(价钱)of Beef with Broccoli is the same one of __________.A.Spiced OnionB.a large Fried Fish
C.Chicken with Fresh BroccoliD.Chicken with Fresh Mushroom Soup
()50.If you want a Brown Rice,a Chinese Cabbage and a Chicken with Fresh Broccoli,how much do y-ou need to pay?
A.$10B.$8.45C.$18.5D.$ 16.95
(B)
Tom is a middle school student.He used to be a good student.All things changed completely when he was ten.One day his father came back home with a big present---a new computer!It would be Tom’s birthday three days’ later, on the 12 June.Tom always wanted to have a computer very much, so he was very happy.In the following days he played computer games all the time except eating and sleeping.Soon he became very good at it.He began to play computer games day and night and even had no time for dinner and sleep.He didn’t want to study hard any more and he was often late for school.Sometimes he even didn’t go to school.Soon he got band grades and even failed exams.His father was very angry with him and wanted to throw the computer away.Tom went to his class teacher for help.“You are a clever boy and you have your own bobby.That’s good thing.But you are going too far…” the teacher said.Tom decided to changed his mind(想法)and bad hobbies, and study hard again.()51.When did Tom’s father buy a computer ?
A.On June 7thB.On June 8thC.On June 9thD.On June 12th
()52.Tom’s father brought him a computer because _________.A.he wanted Tom to play gamesB.he wanted Tom to learn computer
C.it would be Tom’s birthday presentD.Tom’s father has a lot of money
()53.Tom’s father was angry and _________.A.he didn’t let Tom play games againB.hesold the computer
C.he told the teacher about itD.he wanted to throw the computer away
()54.Who made Tom change his mind ?
A.Tom’s fatherB.Tom’s class teacherC.Tom’s classmateD.Tom’s friend
()55.What is the best title for the passage ?
A.Don’t Go Too Far with Your HobbyB.How to learn computer ?
C.Computer can be bad for your health.D.Don’t play games.(C)
Everybody wants to have a happy life.The problem is that no one teaches you how to live a happy life.Here are many ways and here are three of them to help you start.What is happiness?
I often hear people say they want to be happy.But when I ask them what happiness is to them,they don’t know how to explain it.If you don’t know what happiness is to you, happiness is only a word.Have goals(目标)
If you know what makes you happy, you need too have goals to those things.You can’t get happiness if you only want it,but don’t make is come.Don’t do things that make you unhappy
This may seem very easy but you would be surprised how many people do things that make them unha-ppy.If you want happiness in your life, you have to do things that make you happy.()56.According to the passage, everybody wants to _________.A.have a good jobB.travel around the worldC.have a lot of moneyD.live a happy life
()57.For many people, it is _________ to explain what happiness is.A.easyB.boringC.difficultD.exciting
()58.What does the underlined(划线)sentence mean ?
A.We don’t know what happiness is.B.Happiness never comes to the people who want it.C.We should do something to get happiness.D.We can get happiness easily.()59.Which of the following is NOT true ?
A.If you know what makes you happy, you need to have goals to get those things.B.If you don’t know what happiness is to you, happiness is only a word.C.Many people do things that make them unhappy.D.Everybody knows clearly how to live a happy life.()60.What is the best title for this passage ?
A.Three ways to have a good job.B.Three ways to start a happy life.C.Three things that makes you successful.D.Three things that you can’t do in your life.第二卷(25分)
五、单词拼写。(5分)
1.My grandma t_________ English in a middle school ten years ago.2.There are some public l_________ in Guangzhou.You can borrow books from them.3.Your father is sleeping.Please keep q_________.4.We learn many s_________ at school such as English , maths and Chinese.5.Go s_________ ahead along the street for 5 minutes and you will see the hospital.六、每空一词,补全对话。(10分)
A: Hi, Betty.Good news for you.You won first prize in the English competition.B: Wow!I’m so glad to hear that.Who told you about it?
A: Our English teacher _1________.She said three of the students in our class won the prizes.B: What _2________ you ?
A: I was the winner, too.I think I was lucky this time.B: I’m looking at the photos.A: Really? May I have a look?
B: Sure, here you are.A: Ah!_3________ nice photo they are!_4________ did you take them?
B: Don’t you see the Summer Palace ?
A: Oh, you’ve _5________ to Beijing!What kinds of camera did you take with you ?
B: I have a digital one.A: How much did you pay for it.B: It _6________ me 4500 yuan.A: You are so rich.I want to buy _7________, too.But I have not enough money.B: I _8________ buy it myself.My father bought it _9________ last term.A: By the way,I am going out for a picnic tomorrow afternoon.Would you please _10___ me your camera? B: Sure!
A: Thanks.I will return to you the day after tomorrow.七、完成句子。(10分)
1.完成这个项目很累很难。
__________ very tiring and difficult __________ finish the project.2.从那时起,科学家就开始研究恐龙。
__________ began to study dinosaur __________ then ___________.3.他今天早晨6点钟就醒了,然后飞快地起床写了一封信。
He ________ up at six this morning.He then got up quickly and _________ a letter.4.他们说的语言跟你的不一样吗?
_________ the language they speak _________ ___________ yours?
第二篇:清华附中小升初真题数学卷
北京学而慧教育科技有限公司
学生姓名___________年级____________科目____________
日期_______________课时____________学生签字____________
清华附中小升初真题数学卷
北京学而慧教育科技有限公司
第三篇:2014 西安某工大附中小升初真题
2014年小学生毕业综合素质养成阶段性评价
亲爱的同学们:你们已经顺利完成了小学六年的学习生活,现在,请来一次精彩的自我总结吧!别忘了在左侧装订线内填写你的相关信息,漂亮整洁的书写一定会为你增光添彩的!
温馨提示:本评价共分为爱家乡,爱文化,爱思考三个部分,请你一定要在60分钟内完成,合理分配时间也是能力的体现哦!
(爱家乡)
1.(写汉字,注拼音)我们西安是个宜于居住的城市。wei wei ______大秦岭是我们的后花园;关中八景更是引人入胜:太白积雪皑皑______ , 雁塔晨钟悠悠......现在有新增添了波光linlin______的汉城湖,曲______径通幽的浐灞湿地公园。真是聊咋咧!
2.唐代长安是当时世界上最大最繁荣的城市,也是一座美丽的城市。大量唐诗都吟咏长安之美,如韩愈的“最是一年春好处,__________________”;王维的“__________________,客舍青青柳色新”;刘禹锡的“唯有__________美国色,花开时节动京城”; 黄巢的“冲天香阵透长安,满城尽带黄金甲”则写出了__________花的香气宜人。
3.咱们陕西小吃丰富多样,这些美食借着陕西的特色食材和劳动人民的丰富想象力,从历史中一路走来。下面是四张关于陕西小吃的图片,请你任选一种,写出它的名称,并用生动的语言向外地朋友做以介绍。要求使用一种修辞手法。
名称:_____________ 介绍____________________________________________(爱文化)
4.请选出一个正确的选项()
A.人们常说的“李杜”是指唐朝诗人李商隐和杜牧。B.“虚心有节”常用来形容梅花的精神品质。
C.“三个学校的体育老师带领学生参加了庆祝六一乒乓球比赛”这句话是一个歧义句。
D.信天游是民歌的一种,属山歌性质,曲调淳朴高亢,流行于陕南一代。5.汉字有着悠久的历史,书法是在汉字字体基础上形成的独特艺术门类。今年是马年,让我们看看“马”字的演变过程。请在横线上补写出空缺的两个名称。
______ 金文 小篆 隶书 ______ 草书 行书 6.书,被称为人类文明的“长生果”。在小学阶段,我们通过阅读,结识了不少人物,也了解了他们的事迹及个性特点。下面,就让我们把对他们的了解用歇后语的形式表现出来吧。
关公赴会——()梁山伯的军师——()7.阅读后回答。
①一座古朴典雅的“丝绸之路”巨形石雕,矗立在西安市玉祥门外。② 那驮着彩绸的一峰峰骆驼,高鼻凹眼的西域商人,精神饱满,____☆___(形容艺术形象非常逼真,如同活的一样)。③望着这座群雕,就仿佛看到了当年丝绸之落上商旅不绝的景象,仿佛听到飘忽在大漠中的悠悠驼铃声。④他们翻越崇山峻岭,将中国的养蚕,造纸等技术带向中亚、西亚和欧洲,同时,将那里的葡萄、蚕豆、狮子、良马等......传进我国。(1)丝绸之路东起长安,西至__________________。
(2)第①句有一个错别字,请改正。__________改为___________(3)根据解释在第②句☆处写出一个恰当的成语:______________。(4)第④句中有一处标点符号使用错误,请写出修改方法。
__________________________________________________________________ 8.你从下面的故事中明白了什么道理?
昔人有睹雁翔者,将援弓射之,曰:“获则烹。” 其弟争曰:“宜燔(fan, 炙、烤)。”竟斗而讼于社伯(一社之长)。社伯请剖雁。烹燔半焉。已而索雁,则凌空远矣。
__________________________________________________________________ 9.阅读感悟
粽子里的乡愁
琦君
①异乡客地,愈是没有年节的气氛,愈是怀念旧时代的年节情景。
②端午是个大节,也是母亲大忙特忙、大显身手的好时光。想起她灵活的双手,裹着四角玲珑的粽子,就好像马上闻到粽香了。
③母亲包的粽子种类很多。莲子红枣粽只包了少许几个,只专为供佛的素粽,荤的豆沙粽,火腿粽,可以供祖先,供过以后称之为“子孙粽”,吃了会保佑后代儿孙绵延。包的最多的是红豆粽,白米粽,灰汤粽。一家人享受以外,还要布施乞丐。母亲总是为乞丐大量的准备一批,美其名与“富贵粽”。
④我最喜欢吃的是灰汤粽,那是用早稻草烧成灰,铺在白布上,拿开水一冲,滴下的热汤呈灰褐色,内含大量的碱。把包好的白米粽侵泡灰汤中一段时间,提出来煮熟,就是浅咖啡色带碱味的灰汤粽。那股特别的清香,是其他粽子所不及的。几十年以来,一想起灰汤粽的香味,就神往童年与故乡的快乐时光。但今天到哪里去找早稻草烧出灰来冲灰汤呢?
⑤端午节那天,乞丐一早就来讨粽子,真是门庭若市。我帮着长工阿荣提着富贵粽,一个个的分,忙的不亦乐乎。乞丐长高声地喊:“太太,高升点(意味多给点)。明里去了暗里来,积福积德保佑你大富大贵啊!” 母亲总是从厨房里出来,连声说:“大家有福,大家有福。” ⑥乞丐去后,我问母亲:“他们讨饭吃,有什么福呢?”母亲正色道:“不要这样讲,谁能保证一生一世享福呢? 福是要靠自己修的。时时刻刻要存好心,要惜福最要紧。他们做乞丐的,并不是一个个都好吃懒做的,有的一时做错了事,败了家业; 有的是上一代没积福,害了他们。你看那些孩子,跟着爹娘日晒夜露地讨饭,他们做错了什么,有什么罪过呢?”
⑦母亲的话,在我的心头重重地敲了一下。此后,每回看到乞丐的背上的婴儿,小脑袋晃来晃去,在太阳里晒着,雨里淋着,心里就有说不出的难过。当我把粽子递给小乞丐时,他们伸出黑漆漆的双手接过去,嘴里说着:“谢谢你啊!”他们许多都和我差不多年纪,差不多高矮。我就想,他们为什么当乞丐,我为什么住这样的大房子,有好东西吃,有书读? ⑧日月飞逝,而今,每年的端午节来临时,我很少吃粽子,更无从吃到清香的灰汤粽。母亲细致的手艺和琐琐屑屑的往事,都只能在不尽的怀念中追寻了。
(选自《琦君散文选》,有删减)
(1)根据文章内容,说说文中第⑤段划线句子的含义。
___________________________________________________________________(2)试分析第⑦段中加点字“敲”的表达效果,并说说“我”从母亲的话里明白了什么道理。
______________________________________________________________________________________________________________________________________(3)从文中看出母亲是怎样的人?联系文章内容请做分析。
______________________________________________________________________________________________________________________________________(4)请分析文章最后一段在全文中的作用。
___________________________________________________________________(爱思考)
10.—How many days were there in February this year? —There were _________ days.(填数字)
11.一个立体图形由一些大小相同的小正方体搭成,如图①是从上面看到的和从左面看到的,那么要搭成这样的立体图形,至少要用_______个小正方体。
12.从写有中国、美国、巴西、韩国的四个乒乓球中随机地摸出两个,两球上所写的国家名恰好都是亚洲国家的可能性为____________。
13.一辆小排量轿车每百公里耗油6升,另一款大排量轿车每百公里耗油10升,两辆轿车同样行驶30千米的路程,小排量轿车比大排量轿车节省燃油______升。
14.根据某次安全知识竞赛成绩,笑笑绘制了所有参赛学生成绩的统计图。如图②所示。由图可得:本次安全知识竞赛成绩的优秀率是___________。
15.把一个圆锥体的底面半径增加25%,要使体积不变,则高要减少_____%。16.某小学举办四、五、六年级成语大赛,其中六年级参赛人数占参赛总人数的40%,五年级参赛人数是其他两个年级参赛人数和的 1/2,四年级有32人参赛,本次参加成语大赛的学生共有_______人。
17.如图③,一枚半径为1cm的圆形游戏币在边长为4cm的正方形内任意移动,则在正方形内,游戏币不能到达部分的面积为_______cm²。(π取3.14)
18.按照图④所示的规律摆下去,第20个图形摆放的黑色棋子的个数是_____。
19.“五一”假期,淘气一家自驾游去外地,为按计划准点到达目的地,他们选择早上6:00出发,匀速行驶一段时间后,因中途出现故障耽搁了一段时间,故障排除后,他们加快速度仍匀速前进,结果恰好准点到达。如果它们行驶的路程(km)与所用时间(h)的部分关系如图⑤所示,则他们原计划准点到达的时刻是_________。
20.计算:
21.如图所示,一个长方体,如果长增加3厘米,宽和高都不变,体积增加6立方厘米; 如果宽增加4厘米,长和高都不变,体积增加32立方厘米; 如果高增加5厘米,长和宽都不变,体积增加20立方厘米。求这个长方体的表面积和体积。
22.“放飞爱心,书送希望”,“六一”来临之际,我校爱心小分队需要将同学们捐赠的一批图书打包后,送给贫困地区的孩子们(书的大小相同,要求每包内所装书的册数也相同)。第一次,爱心小分队用这批书的 4/7,打了22个包还多了30本; 第二次他们把剩下的书,连同第一次多的零头一起打包,刚好又打了18包。那么这批书共有多少本? 23.(1)如图(1),在三角形ABC中,D为BC边上中点,则三角形ABD和三角形ADC的面积相等,那么在图(2)中,如果M、N分别为四边形ABCD的边AD、BC的中点,则图中四边形BNDM的面积S1和四边形ABCD面积S之间的关系是_______________________________;(2)如图(3),在四边形ABCD中,M、N分别为AD、BC中点,MB交AN于P,MC交DN于Q。若四边形MPNQ的面积为36,求两个三角形ABP、DCQ的面积和。
第四篇:北京市清华附中小升初语文真题
北京市清华附中小升初语文真题
一.拼音
1.下列加点字注音完全正确的一项是:()
A.阻挠(náo)恩赐(cì)旋转(xuán)一叶扁舟(biǎn)
B.泊船(bó)澄清(chéng)广袤(máo)悄然无声(qiāo)
C.河畔(pàn)伺候(cì)精湛(zhàn)万籁俱寂(lài)
D.伶俐(líng)质疑(zhì)允许(yǔn)如火如荼(chá)
二.读拼音写汉字:
①第29届北京奥运会开幕式上,各国教练员、运动员qì yǔ xuān áng()地走进场地,个个shén cǎi yì yì(),不停地挥动着手中的国旗向大家表示致意。
②学习时,我们要认真líng tīng(),用心chuǎi mó(),亲密合作,这样才能更好shǔn xī()知识的gān lín(),体验学习的喜悦。
三.词语
1.下列词语中没有错别字的一项是:()
A.糟糕 道嫌 嘲笑 百看不厌
B.智慧 爱怜 涌起 盗听途说
C.驿站 清澈 遵守 无精打彩
D.旅游 协调 应和 不言而喻
四.句子
1.下面一段话中横线上应选填最恰当的一项是:()
古人云:“良药苦口利于病,忠言逆耳利于行。”逆耳的规劝听起来虽不顺耳,可对我们立身做人的确实有好处的。但是若从反面想一想,每个人都有自尊心,都渴望被人尊重、理解,那么
A.顺耳的忠言更利于行啊!B.顺耳的忠言岂不更利于行吗?
C.顺耳的忠言更利于行啊!D.顺耳的忠言不能不更利于行。
(2009清华附中)
2.根据文段的内容,依次填空正确的一项是:()
有人说,宽容是一种润滑剂,;宽容是一种镇定剂,;宽容是一束阳光,;宽容是一座桥梁。
①可消融彼此间的猜疑积雪②可以消除人与人之间的摩擦
③可将彼此间的心灵沟通 ④可以使众多纷扰中恪守平静
A、①②③④ B、②④①③ C、②①③④ D、②③①④
第五篇:清华附中考题(小升初名校真题集锦)
清华附中考题
1.(2008年)
***1()()()(). 579117911***1
12.(2008年)由0,1,2,3,4,5组成的没有重复数字的六位数中,百位不是2的奇数有个.
3.(2009年)设1011041072009A10k,这里A,k都是正整数,那么k的最大值为.
4.(2008年)已知一个四位数加上它的各位数字之和后等于2008,则所有这样的四位数之和为.
5.(2009年)设a,b是两个正整数,它们的最小公倍数是9504,那么这样的有序正整数对(a,b)共有组.
6.(2009年)某工厂接到任务要用甲、乙两种原料生产A、B两种产品共50件,已知每生产一件A产品需甲原料9千克和乙原料3千克;每生产一件B产品需甲原料4千克和乙原料10千克.现在工厂里只有甲原料360千克和乙原料290千克,那么该工厂利用这些原料,应该生产A、B两种产品各多少件,才能完成任务?请求出所有的生产方案.
7.(2008年)如图,甲、乙分别从A、C两地同时出发,匀速相向而行,他们的速度之比为5:4,相遇于B地后,甲继续以原来的速度向C地前进,而乙则立即调头返回,并且
乙的速度比相遇前降低,这样当乙回到C地时,甲恰好到达离C地18千米的D处,那
么A、C两地之间的距离是多少千米?
A
BCD
8.(2008年)选项中有4个立方体,其中是用左边图形折成的是().
A
BCD
9.(2008年)甲、乙、丙三人承包一项工程,发给他们工资共1800元,三人完成这项工
程的具体情况是:甲、乙两人合作6天完成了工程的,因为甲有事,由乙、丙合作
2天完成余下工程的,以后三人合作5天完成了这项工程,按完成量的多少来付劳动报
酬,甲、乙、丙各得多少元?
10.(2009年)如图,在时钟的表盘上任意作9个120°的扇形,使得每一个扇形都恰好覆盖4个数,且每两个扇形覆盖的数不全相同,求证:一定可以找到3个扇形,恰好覆盖整个表盘上的数.并举一个反例说明,作8个扇形将不能保证上述结论成立.
k
11.(2009年)对四位数abcd,若存在质数p和正整数k,使abcdp,且
pabcdp5,求这样的四位数的最小值,并说明理由.
【解析】
111111
11.设A,B,579117911
11
原式ABAB
1313
ABAABB
13131
AB 1
3111 1356
52.由0,1,2,3,4,5组成的没有重复数字的奇六位数,个位可以为1,3,5,有3种选法;个位选定后,十万位不能与个位相同,且不能为0,有4种;十万位选定后万位有4种;……;故由0,1,2,3,4,5组成的没有重复数字的奇六位数的个数为:344321288个;
由0,1,2,3,4,5组成的没有重复数字且百位为2的奇六位数,个位可以为1,3,5,有3种选法;十万位不能与个位相同,且不能为0、2,有3种;十万位选定后万位有3种;……;故由0,1,2,3,4,5组成的没有重复数字且百位为2的奇六位数的个数为:3332154个;
所以,满足条件的数有:28854234个.
3.只要看里面5的因子个数,因为2的因子个数一定足够多.
101到2009里面共有(2009101)31637个数.其中,这里面的后625个一定
含有125个5的倍数,25个25的倍数,5个125的倍数和1个625的倍数;前12个中,110和125共含有4个因子5.所以,含有5的因子个数为12525514160.
4.设这样的四位数为abcd,则abcdabcd2008,即10a01b10c1d1,则1a1或2.
⑴若a2,则101b11c2d6,得bc0,d3,abcd2003;
b1c12d1007由于11c2d11929117,所以⑵若a1,则101,101b1007117890,所以b8,故b为9,11c2d100790998,则c为偶数,且11c982980,故c7,由c为偶数知c8,d5,abcd1985;
所以,这样的四位数有2003和1985两个,其和为:200319853988.
5.先将9504分解质因数:9504253311,(a,b)所含2的幂的情况可能是(0,5),(1,5),(2,5),(3,5),(4,5),(5,5);(5,0),(5,1),(5,2),(5,3),(5,4),共11种,同理3的幂的情况有7种,11的幂的情况有3种,所以总共有1173231种.
6.设生产A产品x件,则生产B产品(50x)件.
需要甲原料9x4(50x)2005x千克,需要乙原料3x10(50x)5007x千
2005x360
克.为避免原料不够用,则,解得30x32.所以共有三种生产
5007x290A30A31A
32方案,分别为,,.
B20B19B18
7.由于甲、乙的速度之比为5:4,所以,AB:BC5:4,乙调头后的速度为原来
44
速度的,所以乙调头后两人速度之比为5:425:16,而乙回到C地时甲恰好到达D
55
169
处,所以BD:BC25:16,即BCCD,则ACBC4CD72(千米),即A、C两
4地之间的距离为72千米.
8.图中A、C、D项展开后的图形均为下图,只有B项展开后的图形与题中左边图形相符,所以答案为B.
9.设工程总量为1,甲、乙、丙三人每天完成的工程量分别为x、y、z,依题意,有: 1
6(xy)3
11217,解得:x,y,z,2(yz)(1)
344518060
115xyz(1)(1)34
则,甲完成的工程量为:,乙完成的工程量为:65
6060
791214,丙完成的工程量为:,所以,甲应得62525
1801804545
1191141800330元,乙应得1800910元,丙应得1800560元.
6018045
10.在表盘上共可作出12个不同的扇形,且1~12中的每个数恰好被4个扇形覆盖.将这12个扇形分为4组,使得每一组的3个扇形恰好盖住整个表盘.那么,根据抽屉原理,9
从中选择9个扇形,必有13个扇形属于同一组,那么这一组的3个扇形可以覆盖
4
整个表盘.
另一方面,作8个扇形相当于从全部的12个扇形中去掉4个,则可以去掉盖住同一个数的4个扇形,这样这个数就没有被剩下的8个扇形盖住,那么这8个扇形不能盖住整个表盘.
11.因为2250,33522,555太大,所以p3.因为abcd是3的幂,所以四个数字中不能包含3以外的质因子,也就是说只能含有1,3,9.
观察可知恰好有139922,所以最小的这样的四位数是1399.