2014初三上第二次月考试题 (2)

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2013--2014学年度上学期九年级第二次月考英语试题

2013--2014学年度上学期九年级第二次月考英语试题

2014--2015学年度上学期九年级第二次月考英语试题本试卷满分120分,考试用时100分钟一、单项填空(25分)请阅读下面各小题,从题中所给的A、B、C、D四个选项中选出可以填入空白处的最佳选项。

1 The abacus _____ invented in the sixth century by Chinese people.A. beB. isC. wasD. were2. It’s used for ______ really cold ice cream.A. scoopingB. scoopedC. scoopD. scoops3. Anna is ______ to choose her own clothes.A. allowedB. allowsC. allowingD. allow4. This kind of food is cooked by a cook _____ Jack.A. call b. calls C. called D. calling5 –I usually watch TV till 11P.M . – Really? Are you ?A. allowed to stay upB. allow to stay upC. allowing staying upD. allowed stay up6. Let’s play football at home.A. instead stayB. instead of stayingC. instead stayingD. instead staying7 It’s very cold outside. You need warm clothes if you go out.A. wearingB. to wearC. to wearingD. wears8. Smoking in the cinema. Please stop .A. allows, to smokeB. is allowed, smokingC. isn’t allowed, smokingD. isn’t, to smoke9. She ate sandwiches this morning.--- . .A. So do IB. So I didC. So did ID. So am I10. Good books again and again.A. should be readedB. should be readC. must readD. may read11. should not be allowed to go out at night.A. Twelve-years-oldB. Twelve-year-oldsC. Twelve years oldD. Twelve year olds12. I can’t speak English so as Bolly, but I am at Chinese.A. well, goodB. good, goodC. good, wellD. well, well13. Eating vegetables is good your health.A. atB. forC. toD. in14. We should learn a lot each other.A. inB. fromC. onD. to15 --- May I go swimming now?--- No, you _____. You must finish your homework first.A. mustn’tB. may notC. couldn’tD. needn’t16. --- Excuse me. Where is the zoo?--- Sorry, I don’t know. Ask that policeman. He _____ know.A. shallB. mayC. needD. would17-- ______ I finish the work today?-- No, you needn’t.A. MustB. MayC. CanD. Need18--- Must I finish my homework now?--- No, you _____. You may have a rest first.A. mustn’tB. can’tC. may notD. needn’t19 --- Tom, where is your father?-- I’m not sure. He_______ in his office.A. isB. may beC. maybeD. may20. ---_______I visit Lucy on Sunday, Mum?---Yes, you___________.A. Must;canB. May;mayC. Need;needD. May;need21. --- Where is Tom?--- He hasn't come to school today. I think he_______ be ill.A. has toB. shouldC. mayD. Need22 ---What do you think of this football match?---I have no idea. But is believed that Spanish team will win.A.thatB.thisC.whichD.it23 The water is not enough. Add some more sugar,please.A.crispyB.sweetC.saltyD.sour24 I’m to choose my own lifestyle(生活方式).A. young enoughB. enough youngC. enough oldD. old enough25 Do you always finish your work Friday nights?A. atB. onC. inD. of二、完形填空(10分)The bicycle is one of the simplest (最简单的) yet most useful inventions in the world. What is most surprising is that it was not invented earlier, l the great inventor Leonardo da Vinci had drawn pictures for bicycles and also for flying machines and some other things. Those things were not produced 2 long after he died.A person riding a bicycle use 3 energy(能量)to make the bicycle move, and there is no pollution at all when you are riding. Even so, m developed 4 , mostpeople don't travel to work by bicycle. It is not because the bicycles are expensive or people feel 5 if they ride to work. It's because 6 cars on the roads becomes larger. It certainly becomes 7 to ride a bi-cycle. As a result, more people put their bicycles away and go to work 8 their cars and, in this way, the situation(情形)is made more serious. 9 the best way to make riding safer and more popular is to create paths(开设通道)only for bicycles, and to make 10 so difficult and expensive for drivers to take their cars into the city that they will go back to use their bicycles.1 A.although B.so C.but D.because2 A.when B.before C.since D.until3 A.much B.quite a lot of C.very little D.many4 A.world B.countries C.1and D.earth5 A.comfortable B.1ucky C.sorry D.tired6 A.the number of B.a number of C.this kind of D.an kinds of7 A.safer B.more dangerous C.much dangerous D.safe8 A.by B.in C.use D.drive9 A. Always B.May be C.Perhaps D.Nearly10 A.it B.them C.us D.that三、阅读理解(40分)(A)Many teenagers(青少年)feel that the most important people in their lives are their friends. They believe that their family members don‘t know them as well as their friends do. In large famiAlies, it is quite often for brothers and sisters to fight with each other and then they can only go to their friends for some ideas.It is very important for teenagers to have one good friend or a group of friends. Even when they are not with their friends, they usually spend a lot of time talking among themselves on the phone. This communication(交际)is very important in children’s growing up, because friends can discuss(讨论)something. These things are difficult to say to their family members.However, parents often try to choose their children‘s friends for them. Some parents may even stop their children from meeting their good friends. Have you ever thought of the following questions?Who chooses your friends?Do you choose your friends or your friends choose you?Have you got a good friend your parents don’t like?Your answers are welcome.( )1 Many teenagers think that___can understand them better.A.friendsB.brotersC.sistersD.parents( )2 ______is very important to teenagers.A.To make friendsmunicationC.To stop meeting friendsD.Both A and B( )3 When teenagers have something difficult to say to their parents, they usually_____.A.stay alone at homeB.fight with their parentsC.discuss it with their friendsD.go to their brothers and sisters for help ( ) 4 The sentence(句子)“Your answers are welcome”means“________”.A.You are welcome to discuss the questions with usB.We‘ve got no idea, so your answers are welcomeC.Your answers are always rightD.You can give us all the righ answers ( )5.Which of the following is the writer’s attitude(态度)?A.Parents should choose friends for their children.B.Children should choose everything they like.C.Parents should understand their children better.D.Teenagers should only go to their friends for help.(B)The best way of learnign a language is using it. The best way of learning English is talking in English as much as possible. Sometimes you’ll get your words mixed up(混合)and people will not understand you. Sometimes people will say things too quickly and you can‘t understand them. But if you keep your sense of humor(幽默感),you can always have a good laugh at the mistakes you make. Don’t be unhappy if people seem to be laughing at your mistakes. It‘s better for people to laugh at your mistakes than to be angry with y ou, because they don’t understand what you are saying. The most important thing for learaing Englsih is:“Don‘t be afraid of making mistakes because everyone makes mistakes.”( )6.The writer thinks that the best way for you to learn a language is_______.A.writinging itC.listeningD.learning grammar( )7.What should you do in learning Englsih?A.Be careful not to make any mistake.B.Write as quickly as you can.C.Speak English as much as you can.ugh more often.( )8.When people laugh at your mistakes, you should______.A.not careB.be happyC.feel worriedD.be unhappy( )9.When you make a mistake, you should______.A.keep quietB.get angryC.be kindD.keep your sense of humor ( )10.The story tells us:“________”A.Only foolish(愚蠢的)people make mistakesB.Few people make mistakesC.People never make mistakesD.There is no one who doesn’t make mistakes(C)TV PROGRAMMESChannel 118:00Around China18:30Children‘s pro gramme19:00News19:30Weather report19:40Around the world20:10TV play: Sisters21:00English for today21:15Popular music21:55Talk showChannel 217:45Computers today18:10Foreign arts18:30English classroom19:00Animal world19:25China’9920:20Sports21:00TV play:Guo Lanying21:45English news22:06On TV next week( )11.If you want to watch a football game, the best programme for you would be_______. playB.SportsC.Around the worldD.Talk show( )12.The programme of_____will let you know much about westem(西方的)countries.A.SistersB.Around ChinaC.Around the worldD.On TV next week( )13.If you want to know something about tigers, elephants and monkeys, the best programme for you is_______.A.Around ChinaB.Animal world playD.Foreign arts( )14.English classroom is a programme that______.A.lets you know something about classroomsB.tells you something about studentsC.lets you know something about school lifeD.teaches you English( )15.The programme at the end of Channel 2 means_______on TV next week.A.newsB.programmesC.peopleD.places(D)Perhaps you have heard a lot about the Internet,but what is it,do you know?The Internet is a network.It uses the telephone to join millions of computers together around the world.Maybe that doesn't sound very interesting.But when you're joined to the Internet,there are lots of things you can do.You can send E-mails to your friends,and they can get them in a few seconds.You can also do with all kinds of information on the World Wide Web(WWW).There are many different kinds of computers now.They all can be joined to the Internet.Most of them are small machines sitting on people's desks at home,but there are still many others in schools,offices or large companies.These computers are owned by people and companies,but no one really owns the Internet itself.There are lots of places for you to go into the Internet.For example,your school may have the Internet.You can use it during lessons or free time.Libraries often have computers joined to the Internet.You are welcome to use them at any time.Thanks to the Internet,the world is becoming smaller and smaller.It is possible for you to work at home with a computer in front,getting and sending the information you need.You can buy or sell whatever you want by the Internet.But do you know 98%of the information of the Internet is in English?So what will English be like tomorrow?()16.What is the passage mainly about?a.Internet.b.Information.c.Computer.d.E-mail()17.Which is the quickest and cheapest way to send messages to your friends?a.By post b.By E-mail c.By telephone.d.By satellite ...()18.Which may be the most possible place for people to work in tomorrow?a.In the office.b.At school.c.At home.d.In the company.()19.Who's the owner of the Internet?a.The headmaster.b.The officer.c.The user.d.No one.()20.What does the writer try to tell us with the last two sentences of the passage?a.English is important in using the Internet.b.The Internet is more and more popular.c.Most of the information is in English.d.Every computer must have the Internet.四补全短文(其中有两项多余)(10分)In China ,more and more middle school students are getting shorter sleeping time than before. 1_________ because they have much homework to do. Some homework is given by their teachers and some by their parents. Also 2._________. They are not careful enough while they do their homework, 3_________. Some students spend too much time watching TV or playing computer games. They stay up very late. Some student have to get up early every morning on weekdays to get to school on time by bus or by bike.4._________.Schools and parents should cut down some of the homework so that children can enjoy more than nine hours of sleep every night for their health. For children, we should make best use of our time.5_________, we will find it much better for both1.Alexander Graham Bell i ________ the telephone in 1876.2. Taiwan (属于)to China forever.3.An fatal accident _____________(发生)at this crossing three years ago.4.__________________(毫无疑问),she is the best nurse in the hospital.5.They are___________(英雄)in many people’s heart.6.Mr Brown will go fishing if it________(not rain)tomorrow.7.They never knew what_______(happen)to the world in a hundred years.8.When did you get your bike________?(repair)9.Math must________(study) well.10.Some_______were operating on the patient.(woman doctor)五句型转换(10分)1. The League was founded in Guangzhou in 1922.(就划线部分提问)________ _______ ________ _______ the League________?2. Did the students wear the school clothes a lot?(变为被动语态)________ the school clothes________ a lot?3.Whose guitar is this? (改为同义句)_________ _________ the guitar belong to?4.It might be Jane’s violin.(对画线部分提问)________ __________ might it be?5.Jack went to bed after his father came back.(改为同义句)Jack ________ _____ to bed ________his father came back.6.People use wood for making tables.(改为被动句)————————————————————————7.We must repair the computer now.(改为被动句)————————————————————————8谁错拿了我的书包?Who ________my schoolbag________ __________?9他从来没有找老师帮忙,汤姆也没有。

2014年苏科版初三上第二次数学月考试卷

2014年苏科版初三上第二次数学月考试卷

2 初三数学月考2试卷一、选择题(每小题3分,共18分)1.由二次函数1)3(22+-=x y ,可知( )A .其图像的开口向下B .其图像的对称轴为过(-3,1)且与y 轴平行的直线C .其最小值为1D .当3<x 时,y 随x 的增大而增大2.如图,∠1=∠2,则与下列各式不能说明△ABC ∽△ADE 的是( )A .∠D =∠B B .∠E =∠C C .AC AE AB AD = D .BCDE AB AD = 3.如图,已知抛物线c bx x y ++=2的对称轴与x 轴交点的横坐标为2,点A ,B 均在抛物线上,且AB 与x 轴平行,其中点A 的坐标为(0,3),则点B 的坐标为( )A .(2,3)B .(3,2)C .(3,3)D .(4,3)4. 圆锥的底面圆的周长是4π cm ,母线长是6 cm ,则该圆锥的侧面展开图的圆心角的度数是( )A.40° B.80° C.120° D.150°5.以3、4为两边长的三角形的第三边长是方程040132=+-x x 的根,则这个三角形的周长为( )A.15或12B.12C.15D.以上都不对6.如图,△ABC 的三个顶点都在⊙O 上,∠BAC 的平分线交BC 于点D ,交⊙O 于点E ,则与△ABD 相似的三角形有( )A.3个B.2个C.1个D.0个二、填空题(每小题3分,共30分)7. 若1x ,2x 是一元二次方程2560x x -+=的两个根,则1x 2x = .8. 一组数据1,3,2,5,的平均数为3,那么这组数据的方差是______________.9.若一元二次方程0892=+-x kx 的一个根为1,则k = ,另一个根为 .第6题10.已知函数12)3(2++-=x x k y 的图像与x 轴有交点,则k 的取值范围是 .11.将抛物线y =x 2-2x 向上平移3个单位,再向右平移4个单位所得到的抛物线的函数表达式是 .12. 如图,AB 是⊙O 的直径,点C ,DD = _____ __.13.以O 为圆心的两个同心圆中,大圆的弦AB 与小圆相切于点C ,若大圆半径为10 cm ,小圆半径为 6 cm ,则弦AB 的长为_______cm .14.如图,已知二次函数c bx x y ++=2的图像经过点(-1,0),(1,-2),当y 随x 的增大而增大时,x 的取值范围是 .15.在△ABC 中,AC =9,BC =6,在AC 上找一点D ,使△ABC ∽△BDC ,则AD = .16.在平面直角坐标系xoy 中,已知A (2,-2),B (0,-2),在坐标平面中确定点P ,使△AOP 与△AOB 相似,则符合条件的点P 共有 个.三、解答题(共72分)17.解方程:(4x2=8分)(1)0152=+-x x ; (2)()()2232-=-x x x .18. (5分)某厂一月份生产某种机器100台,计划二、三月份共生产机器264台.求二、三月份每月的平均增长率.19. (5分)已知:ΔACB 为等腰直角三角形,∠ACB =900 延长BA 至E ,延长AB 至F ,∠ECF =1350. 求证:ΔEAC ∽ΔCBF .第14题 c +C第12题20. (7分)说明:不论x 取何值,代数式257x x -+的值总大于0。

2014年九年级英语第二次月考试题

2014年九年级英语第二次月考试题

永州陶铸中学初中部2012年上期第二次月考九年级英语试卷本套试卷共四部分,满分:120分,命题人:周运乾 审核人:李淑云 (亲爱的同学们:老师投与你们信任的目光,相信同学们一定会细心审题、认......真答题,....预祝同学经过一次快乐的旅程!切记我们的口号“我诚信、我考试,我自信、我答题”)第一部分 听力技能(共四节,满分25分)一、听句子,根据所听到的内容选择正确答语。

每题念两遍。

(共6小题,每小题1分,共计6分)( )1. A. You ’re supposed to shake hands. B. You will never do that.C. you ’re not supposed to do that. ( )2. A. Betty did it. B. Here you are. C. No, I haven ’t. ( )3. A. They ’re comfortable. B. I agree with you. C. I like some cute animals.( )4. A. It doesn ’t matter. B. Of course not. C. My pleasure.( )5. A. It ’s very popular. B. It was invented in 1876. C. Bell invented it.( )6. A. Very bad. B. Very good. C. Very well.二、听句子,选择与你所听句子内容相符的图片。

每题念两遍。

(共4小题,每小题1分,共计4分)7.( ) 8.( ) 9.( ) 10.( ) 三、听对话,根据对话内容及问题选择正确答案。

每题念两遍。

(共10小题,每小题1分,共计10分)( )11. A. The jokes are too sa d. B. He wants to cry. C. Because of the onions.( )12. A. Once. B. Twice. C. Three times. ( )13. A. Clean up the city parks. B. Take the music class. C. We don ’t know.( )14.A. He ’d like to stay on the island. B. He could chat with his friends. C. He could play the computer games.( )15. A. At 5:05 pm. B. At 4:35 pm C. At 4:05 pm.( )16. A. Lucy. B. Nick. C. Nobody.装 订 线 内 不 要答题 装订 线 外不 要写 考 号姓 名等 违 者 试 卷 作0 分 处 理( )17. A. In a Chinese house. B. In an English house. C. In an American house.( )18. A. Sad movies. B. Action movies. C. Comedies.( )19. A. Teacher and Student. B. Headmaster and teacher. C. Classmates.( )20. A. His mother. B. His grandparents. C. The boy.四、听短文,根据短文内容选择正确答案。

遵义十五中2014年初三语文上册第二次月考试卷(带答案)

遵义十五中2014年初三语文上册第二次月考试卷(带答案)

遵义十五中2014年初三语文上册第二次月考试卷(带答案)遵义十五中2014年初三语文上册第二次月考试卷(带答案)(全卷总分150分,考试时间150分钟)注意事项: 1、答题前,务必将自己的姓名、学号填写在答题卡规定的位置上。

2、第1~6题为单项选择题,将答案填入方框内;第7~26题为非选择题,必须使用黑色墨水或黑色签字笔,将答案书写在答题卡规定的位置上。

3、所有题目必须在答题卡上作答,在试题卷上答题无效。

一、积累与运用(30分) 1.汉字积累――下列词语中加点的字,读音完全正确的一项是(3分) A.猝死(cù)寂寥(liáo)孤注一掷(zhèn) B.贻误(yí)地壳(qiào)言简意赅(hài) C.剽悍(piāo)阴晦(huì)弄巧成拙(zhuō) D.炫耀(xuàn)戏谑(nüè)苦心孤诣(yì) 2.词语积累――下列词语的意义,不完全相反的一项是(3分) A.冗长――简短安谧――喧嚣孤陋寡闻――见多识广 B.参差――整齐瘦瘪――丰腴韬光养晦――展现才能 C.忸怩――大方咫尺――天涯比比皆是――寥寥无几 D、盛馔――简餐奢侈――节俭销声匿迹――崭露头角 3.文化积累――下列句子的内容,陈述有误的一项是(3分) A.“初唐四杰”是指唐朝初年的诗人王勃、杨炯、卢照邻和骆宾王。

B.“唐宋八大家”是指韩愈、柳宗元、欧阳修、苏洵、苏轼、苏辙、王安石和曾巩。

C.“李杜”是指李白和杜甫,“小李杜”是指李商隐和杜牧。

D.“元曲四大家”是指关汉卿、马致远、晏殊和白朴。

4、语言运用――下列句子的标点符号,使用正确的一项是(3分) A.凡事感激,感激伤害你的人,因为他磨练了你的意志,感激欺骗你的人,因为他增进了你的智慧。

B.“我到底要行去何处?哪里是我的终点?不重要了,”徐霞客对自己说,“重要的是,我行走在天地之间。

2014第二次月考试卷

2014第二次月考试卷

2014-2015学年度九年级数学第二次月考卷考试时间:120分钟;总分:120分姓名班别注意事项:1.答题前填写好自己的姓名、班级、考号等信息2.请将答案正确填写在答题卡上第I卷(选择题)一、选择题(共12小题,每小题3分,满分36分)1.(2012•玉林)计算:22=()A.1B.2C.4D.8 2.(2012•玉林)如图,a∥b,c与a,b都相交,∠1=50°,则∠2=()A.40°B.50°C.100°D.130°3.(2012•玉林)计算:3﹣=()A.3B.C.2D.4A.圆柱B.三棱柱C.球D.长方体A.60°B.80°C.100°D.120°6.(2012•玉林)市农科所收集统计了甲、乙两种甜玉米各10块试验田的亩产量后,得到方差分别是=0.002、=0.01,则()A.甲比乙的亩产量稳定B.乙比甲的亩产量稳定C.甲、乙的亩产量稳定性相同D.无法确定哪一种的亩产量更稳定7.(2012•北海)已知二次函数y=x2﹣4x+5的顶点坐标为()A.(﹣2,﹣1)B.(2,1)C.(2,﹣1)D.(﹣2,1)8.(2012•玉林)如图,在菱形ABCD中,对角线AC,BD相交于点O,且AC≠BD,则图中全等三角形有()A.4对B.6对C.8对D.10对9.(2012•玉林)如图,Rt△ABC的内切圆⊙O与两直角边AB,BC分别相切于点D,E,过劣弧(不包括端点D,E)上任一点P作⊙O的切线MN与AB,BC分别交于点M,N,若⊙O 的半径为r,则Rt△MBN的周长为()A.r B.r C.2r D.r10.9.(3分)(2012•河池)一元二次方程x2+2x+2=0的根的情况是()A.有两个相等的实数根B.有两个不相等的实数根C.只有一个实数根D.无实数根11.(2012•玉林)二次函数y=ax2+bx+c(a≠0)的图象如图所示,其对称轴为x=1,有如下结论:①c<1;②2a+b=0;③b2<4ac;④若方程ax2+bx+c=0的两根为x1,x2,则x1+x2=2,则正确的结论是()A.①②B.①③C.②④D.③④12.9.(2012•北海)在一个不透明的口袋中有6个除颜色外其余都相同的小球,其中1个白球,2个红球,3个黄球.从口袋中任意摸出一个球是红球的概率是()A.B.C.D.第II卷(非选择题)二、填空题(共6小题,每小题3分,满分18分)13.(3分)(2012•河池)用激光测距仪测得两座山峰之间的距离为165000米,将数据165000用科学记数法表示为_________.14.(3分)(2011•十堰)分解因式:x2﹣2x=_________.15.(3分)(2012•河池)如图,AB、AC是⊙O的弦,OE⊥AB、OF⊥AC,垂足分别为E、F.如果EF=3.5,那么BC=_________.16.(3分)(2012•河池)有六张分别印有等边三角形、正方形、等腰梯形、正五边形、矩形、正六边形图案的卡片(这些卡片除图案不同外,其余均相同).现将有图案的一面朝下任意摆放,从中任意抽取一张,抽到卡片的图案既是中心对称图形,又是轴对称图形的概率为_________.17.方程组5731x yx y+=⎧⎨-=⎩的解是___________.18.17.(3分)(2012•河池)从纸上剪下一个圆和一个扇形的纸片(如图),圆的半径为2,扇形的圆心角等于120°.若用它们恰好围成一个圆锥模型,则此扇形的半径为_________.三、解答题(共8小题,满分66分)19.(本题满分6分)解方程:x 2+6x -8=0 20.(本题满分6分)解不等式:x+1>2x ﹣421. (本题满分8分)某厂房屋顶呈人字架形(等腰三角形),如图8所示,已知8AC BC ==m ,30A ∠=°,CD AB ⊥,于点D . (1)求ACB ∠的大小. (2)求AB 的长度.21.解:(1)30AC BC A =∠=Q ,°,30A B ∴∠=∠=°…………………………(1分)180A B ACB ∠+∠+∠=Q °…………………………(2分)180ACB A B ∴∠=∠-∠°-=180°30-°30-° =120°…………………………(4分)(2)AC BC CD AB =⊥Q ,2AB AD ∴=………………………………………………………………(5分) 在Rt ADC △中,30A AC ∠==°,8.cos AD AC A ∴=·,………………………………………………………(6分) =8·cos 30°=8=)2m AB AD ∴==.…………………………………………………(8分)22.(本题满分8分)ACD图8BACDB21.(8分)(2013•桂林)如图,在矩形ABCD中,E,F为BC上两点,且BE=CF,连接AF,DE交于点O.求证:(1)△ABF≌△DCE;(2)△AOD是等腰三角形.矩形的性质;全等三角形的判定与性质;等腰三角形的判定证明题.(1)根据矩形的性质可得∠B=∠C=90°,AB=DC,然后求出BF=CE,再利用“边角边”证明△ABF和△DCE全等即可;(2)根据全等三角形对应角相等可得∠BAF=∠EDC,然后求出∠DAF=∠EDA,然后根据等腰三角形的定义证明即可.证明:(1)在矩形ABCD中,∠B=∠C=90°,AB=DC,∵BE=CF,BF=BC﹣FC,CE=BC﹣BE,∴BF=CE,在△ABF和△DCE中,,∴△ABF≌△DCE(SAS);(2)∵△ABF≌△DCE,∴∠BAF=∠EDC,∵∠DAF=90°﹣∠BAF,∠EDA=90°﹣∠EDC,∴∠DAF=∠EDA,∴△AOD是等腰三角形.23.(本题满分8分)(2014•遵义22.(10分))小明、小军两同学做游戏,游戏规则是:一个不透明的文具袋中,装有型号完全相同的3支红笔和2支黑笔,两人先后从袋中取出一支笔(不放回),若两人所取笔的颜色相同,则小明胜,否则,小军胜.(1)请用树形图或列表法列出摸笔游戏所有可能的结果;(2)请计算小明获胜的概率,并指出本游戏规则是否公平,若不公平,你认为对谁有利.考点:游戏公平性;列表法与树状图法.分析:(1)列表将所有等可能的结果一一列举出来即可;(2)根据列表里有概率公式求得小明获胜的概率即可判断是否公平.解答:解:(1)列表得:红1 红2 红3 黑1 黑2红1 红1红2 红1红3 红1黑1 红1黑2红2 红2红1 红2红3 红2黑1 红2黑2红3 红3红1 红3红2 红3黑1 红3黑2黑1 黑1红1 黑1红2 黑1红3 黑1黑2黑2 黑2红1 黑2红2 黑2红3 黑2黑1(2)共20种等可能的情况,其中颜色相同的有8种,则小明获胜的概率为=,小军获胜的概率为1﹣=,∵<,∴不公平,对小军有利.24.(本题满分8分)24.例13将一条长为20cm的铁丝剪成两段,并以每一段铁丝的长度为周长做成一个正方形.(1)要使这两个正方形的面积之和等于17cm2,那么这段铁丝剪成两段后的长度分别是多少?(2)两个正方形的面积之和可能等于12cm2吗? 若能,求出两段铁丝的长度;若不能,请说明理由.解(1)设剪成两段后其中一段为x cm,则另一段为(20-x)cm.则根据题意,得24x⎛⎫⎪⎝⎭+2204x-⎛⎫⎪⎝⎭=17,解得x1=16,x2=4,当x=16时,20-x=4,当x=4时,20-x=16,答这段铁丝剪成两段后的长度分别是4cm和16cm.(2)不能.理由是:不妨设剪成两段后其中一段为y cm,则另一段为(20-y)cm.则由题意得24y⎛⎫⎪⎝⎭+2204y-⎛⎫⎪⎝⎭=12,整理,得y2-20y+104=0,移项并配方,得(y-10)2=-4<0,所以此方程无解,即不能剪成两段使得面积和为12cm2.25、24.(8分)(2012•河池)如图,已知AB是⊙O的直径,⊙O过BC的中点D,且DE⊥AC 于点E.(1)试判断DE与⊙O的位置关系,并证明你的结论;(2)若∠C=30°,CE=6,求⊙O的半径.26.(本题满分12分)(广西贺州市)如图,在平面直角坐标系中,已知点A (0,1)、B (3,5),以AB 为边作如图所示的正方形ABCD ,顶点在坐标原点的抛物线恰好经过点D ,P 为抛物线上的一动点. (1)直接写出点D 的坐标; (2)求抛物线的解析式;(3)求点P 到点A 的距离与点P 到x 轴的距离之差;(4)当点P 位于何处时,△APB 的周长有最小值,并求出△APB 的周长的最小值.解:(1)D (-4,4) ··················································································································2分(2)∵抛物线的顶点在坐标原点,∴设抛物线的解析式为y =ax2把D (-4,4)代入,得4=a (-4)2,∴a =41∴抛物线的解析式为y =41x2 ··········································································4分(3)过点P 作PH ⊥x 轴于点H ,设点P (m ,n ),则n =41m2CA =221)(-n m+=12 42++n n n -=21)(+n =n +1 ························5分PH =n∴PA -PH =1 ······························································ 7分 (4)由(3)可知:PA =PH +1∵A (0,1)、B (3,5),∴AB =22153)(-+=5∴△APB 的周长=PA +PB +AB=PH +1+PB +5=PB +PH +6 ·································· 8分ODA B P yxC ODABPyxCH显然当B 、P 、H 三点在一条直线上时,PB +PH 最小,△APB 的周长最小把x =3代入y =41x2得y =49此时△APB 的周长=5+6=11故当点P 的坐标为(3,49)时,△APB 的周长最小,其最小值为11 ····10分。

2013-2014学年度九年级第一学期第二次月考

2013-2014学年度九年级第一学期第二次月考

新梦想教育辅导讲义
电流跟电阻的关系”。

当A、B两点间的电
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如图电源电压保持不变,闭合开关S后,当滑片P向左移动时,
______。

当滑片P分别在滑动变阻器的两个端点a和d、
表格中,你所依据的物理规律
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18.班上有30位同学需用投票表决的方式来决定班级重大事宜,
票的人数。

为此,小明准备了下列器材:
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(1)画出表决器的电路原理图(可用“……”省去部分重复的电路)
、测定小灯泡(额定电压3.8伏)的额定功率的实验:
下左表是在实验中遇到的现象,请你分别写出造成这些现象的具体原因
教学主管意见:
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新梦想教务处。

九年级上第二次月考数学精品试卷

九年级上第二次月考数学精品试卷

城关中学2013-2014学年九年级上第二次月考数学试卷本卷满分150分一、选择题(每小题4分,共40分) 1.在Rt △ABC 中,∠C =90°,若22sin =A ,则cosB 的值为( ). A .21 B .22C .23 D .12. 已知点A( -2 ,y 1 ) , B( -1 ,y 2 ) , C( 3 ,y 3 )都在反比例函数xy 4=的图象上,则( )A. y 1<y 2<y 3B. y 3<y 2<y 1C. y 3 <y 1<y 2D. y 2<y 1<y 33.甲、乙两地相距60km ,则汽车由甲地行驶到乙地所用时间y (小时)与行驶速度x (千米/时)之间的函数图像大致是( )4.已知函数)0(>=k xky 经过点),(),,(222111yx P y x P ,如果021<<y y ,那么( ) A.012<<x xB.021<<x xC.012>>x xD.021>>x x5.由若干个相同的小立方体搭成的几何体的三视图如图所示,则搭成这个几何体的小立方体的个数是( ) A .3 B .4 C .5 D .6主视图 左视图 俯视图6、已知函数1y x=的图象如图所示,当y ≥-1时,y 的取值范围是( ) A .x <-1B..x ≤-1C . x <-1或x ≥0D . x ≤-1或x >0BC7、在同一直角坐标系中,函数y =kx -k 与ky=(k ≠0)的图象大致是( )8、对于函数xy 6=,下列说法错误..的是( ) A . 它的图像分布在一、三象限 B . 它的图像是轴对称图形 C . 它的图像是中心对称图形 D . y 的值随x 的增大而减小9、如图:AD ⊥CD ,AB=13,BC=12,CD=3,AD=4 ,则sinB=( )A B C D10.如图,已知正方形ABCD 的边长为2,如果将线段BD 绕着点B 旋转后,点D 落在CB 延长线上的D'处,那么tan ∠BAD'等于( ) A 、2 B 、22C 、22D 、1 二、填空题(每小题4分,共24分) 11.若点(-2,1)在双曲线ky x=上,则k 的值为_______。

2014届九年级数学上学期第二次月考试题 (新人教版 第80套)

2014届九年级数学上学期第二次月考试题 (新人教版 第80套)

湖北省十堰市茅箭区实验学校2014届九年级上学期第二次月考数学试题 新人教版一、选择题(本大题共10个小题,每小题3分,共30分。

在每小题给出的四个选项中,只有一项是正确的)1.下列各式中,正确的是( )A .3=- B.3=- C3=± D3=± 2.下列一元二次方程有两个相等实数根的是( ) A. 032=+x B. 022=+x x C. 0)1(2=+x D. 0)1)(3(=-+x x 3.下列图形中,是中心对称图形但不是轴对称图形的是( )4.如图,若AB 是⊙0的直径,CD 是⊙O 的弦,∠ABD=58°, 则∠BCD=( )A. 116°B. 32°C. 58°D. 64°5.袋中有红球4个,白球若干个,它们只有颜色上的区别。

从袋中随机地取出一个球,如果取到白球的可能性较大,那么袋中白球的个数可能是( )A. 3个B. 不足3个C. 4个D. 5个或5个以上 6.一圆锥的侧面展开图是半径为2的半圆,则该圆锥的全面积是( ) A.5π B. 4π C.3π D.2π 7.若两个相似三角形的面积之比为1:4,则它们的周长之比为( ) A. 1:2 B. 1:4 C. 1:5 D. 1:168.若A (1,413y -),B (2,45y -),C (3,41y )为二次函数245y x x =+- 的图象上的三点,则1,y 2,y 3y 的大小关系是( )A .123y y y << B .213y y y << C .312y y y <<D .132y y y <<9.如左图,AB 是半圆直径,半径OC ⊥AB 于点O ,AD 平分∠CAB 分别交OC 于点E ,交弧BC 于点D ,连结CD 、OD ,给出以下四个结论:①S △A EC=2S △DEO ;②AC=2CD ;③线段OD 是DE 与DA 的比例中项;④.其中正确结论的序号( )A. ①④B. ①②④C. ①③④D. ③④10.如右图,已知二次函数y=ax 2+bx+c 的图象过A (-3,0),对称轴为直线x=-1,下列结论:①b2>4ac ;②2a+b=0;③a-b+c=0;④5a<b ;⑤a-b>m(am+b)(m ≠-1)其中正确的结论有( )A .1个B .2个C .3个D .4个二、填空题(本题共6小题,每小题3分,共18分)11.若二次根式2x -4有意义,则x 的取值范围是_______________.12.某校九年级学生毕业时,每个同学都将自己的相片向全班其他同学各送一张留作纪念,全班共送了2070张相片,如果全班有x 名学生,根据题意,列出方程为_________________. 13.已知⊙O 的半径为5,圆心O 到直线AB 的距离为2,则⊙O 上有且只有_________ 个点到直线AB 的距离为3。

辽宁省丹东市第七中学2014届九年级上学期语文第二次月考试题 (word版含答案)

辽宁省丹东市第七中学2014届九年级上学期语文第二次月考试题 (word版含答案)

辽宁省丹东市第七中学2014届九年级上学期第二次月考语文试题1.下面各组词语中加线字的读音,完全正确的一项是( ) ( 2分)A.宽恕(shù)涟漪(yī)叱咤风云(zhà)诓骗(kuāng)B.炽痛(zhì)朔方(shuî)锲而不舍(qiâ)脊梁(jǐ)C.阔绰(chuî)诘责(jí)即物起兴(xìng)滞碍(zhì)D.颔首(hán)不逊(xùn)广袤无垠(mào)狡黠(xiá)2.下列词语中没有错别字的一组是( ) ( 2 分)A恣睢干涸兴高采烈哄堂大笑 B睿智池塘绵里藏针世外桃园C暴躁楹联怨天尤人再接再励 D矫情证券走头无路川流不息3.下面句子没有语病的一项是( ) ( 2分)A.忽视母语修养,会让母语中独特的文化意蕴在我们的日常生活中日渐逐步消退。

B.为提高市民行车的舒适度,有关部门对多处路井部位进行了整修,解决了颠簸现象。

C.艺术团的演出,博得了各界观众热烈的欢迎,观众对这次成功的演出给予了极高的评价。

D.在我遇到困难的时候,他伸出了友爱之手,认真地帮助了我。

4.给下列句子排序,最恰当的一项是()(2分)①当阳光撒在身上时,它更坚定了心中的信念–—要开出:一朵鲜艳的花。

②不久,它从泥土里探出了小脑袋,渐渐地,种子变成了嫩芽。

③从此,它变得沉默,只有它知道,它在努力,它在默默地汲取土壤中的养料。

④固然它经受着黑暗的恐惧,暴雨的侵袭,但是,它依然努力的生长着。

⑤种子在这块土地上的生活并不那么顺利,周围各种杂草都嘲笑它,排挤它,认为它只是一粒平凡的种子。

A①⑤②③④ B①③②⑤④ C⑤③④①② D⑤④②③①5.选出下列加线的成语使用有误的一项:()(2分)A望江楼头,锦江之畔,红花绿柳,碧波荡漾,人们在这里或散步,或对弈,怡然自得,其乐融融。

B在利益的驱使下,一些不法厂商大肆仿冒名牌,各种山寨名牌如雨后春笋般不断涌现,严重扰乱了市场的正常秩序。

2013-2014九上第二次月考试题卷

2013-2014九上第二次月考试题卷

九年级上学期第二次月考英语试题卷(全卷四个部分,共8页;满分100分,考试用时120分钟)第一部分听力(共四节,满分25分)第一节听句子, 选择与句子内容相关的图画,并将所选答案的字母代号填入答题卷相应空格内,每个句子听两遍。

(共5小题,每小题1分,满分5分)( ) 1.A B C( ) 2.A B C( ) 3.A B C( ) 4.A B C( ) 5.A B C第二节听句子,选出与所听句子内容相符的正确答语,并将所选答案的字母代号填入答题卷相应空格内,每个句子听两遍。

(共5小题,每小题1分,满分5分)( ) 6. A. I would say “yes”. B. Thank you very much. C. See you later. ( ) 7. A. Y ou are right. B. I can’t agree with you. C. It could be at your home. ( ) 8. A. But I hope so. B. With pleasure. C. I’m sure I will. ( ) 9. A. Why not? B. Never mind. C. Not at all. ( ) 10. A. I like groups that wear cool clothes.B. I like music that I can sing along with.C. I like Han Hong.第三节听对话,选出能回答问题的正确选项,并将其字母代号填入答题卷相应空格内,每段对话听两遍。

(共5小题,每小题1分,满分5分)听第一段对话,回答第11、12小题。

( ) 11. Whose is this book?A. Carla’s.B. Peter’s.C. Mary’s.( ) 12. Why does the man say the doll is Kitty’s?A. Because Kitty likes it.B. Because Kitty likes volleyball.C. Because Kitty was the only kid at the picnic.听第二段对话,回答第13-15小题。

2014届九年级数学上学期第二次月考试题 (新人教版 第74套)

2014届九年级数学上学期第二次月考试题 (新人教版 第74套)

浙江省绍兴市袍江中学2014届九年级上学期第二次月考数学试题新人教版考生须知:1、本试卷三大题,24小题,满分为150分,考试时间为120分钟。

2、选择题答案涂在答题卡上,其余的都必须用黑色钢笔或水笔写在答题卷上。

一、选择题(每题4分,共40分)1.二次函数8)1(2+-=x y 的顶点坐标是( ) A .(-1,8)B .(1,8)C .(-1,-8)D .(1,-8) 2. 对于函数xy 6=,下列说法错误..的是( ) A. 它的图象分布在一、三象限 B. 它的图象既是轴对称图形又是中心对称图形C. 当x>0时,y 的值随x 的增大而增大D. 当x<0时,y 的值随x 的增大而减小3.在Rt △ABC 中,∠C=90°,AB=5,BC=3,则cosA 的值是( )A 、35B 、45C 、34D 434.已知圆锥的母线长为6cm ,底面圆的半径为3cm ,则此圆锥侧面展开图的面积为 ( )A 、18πc 2mB 、36πc 2mC 、12πc 2mD 、9πc 2m 5.小李从如图所示的二次函数c bx ax y ++=2的图象中,观察得出了下面四条信息:(1)b 2-4ac >0;(2)c >1;(3)ab >0;(4)a -b +c <0. 你认为其中错误..的有( ) A. 2个 B. 3个 C. 4个 D. 1个6.在比例尺为10000:1的地图上,若某建筑物在图上的面积为50 c 2m ,则该建筑物实际占地面积为( )A 、50 2mB 、50002mC 、50000 2mD 、500000 2m7.若小唐同学掷出的铅球在场地上砸出一个直径约为10cm 、深约为2 cm 的小坑,则该铅球的直径约为( )A. 10 cmB. 14.5 cmC. 19.5 cmD. 20 cm8.如图,王虎使一长为4cm ,宽为3cm 的长方形木板,在桌面上做无滑动的翻滚(顺时针方向)木板上点A 位置变化为12A A A →→,其中第二次翻滚被桌面上一小木块挡住,使木板与桌面成30°角,则点A 翻滚到2A 位置时共走过的路径长为( )A 、10cmB 、4cm πC 、72cm πD 52cm9.如图,若点M 是x 轴正半轴上的任意一点,过点M 作PQ ∥y 轴,分别交函数x k 1y =(x >0)和xk 2y =(x >0)的图象于点P 和Q ,连接OP 、OQ,则下列结论正确的是( ) A. ∠POQ 不可能等于90° B. 21K K QM PM = C.这两个函数的图象一定关于x 轴对称 D. △POQ 的面积是)(2121k k +10.如图,一条抛物线与x 轴相交于A 、B 两点,其顶点P 在折线C-D-E 上移动,若点C 、D 、E 的坐标分别为(-1,4)、(3,4)、(3,1),点B 的横坐标的最小值为1,则点A 的横坐标的最大值为( )A .1B .2C .3D .4二、填空题(本大题共6小题,每小题5分,共30分)11.已知点C 是线段AB 的黄金分割点,且AC>BC ,AB=2,则BC= .12.小芳和爸爸正在散步,爸爸身高1.8米,他在地面上的影长为2.1米, 若小芳比爸爸矮0.3米,则她的影长为 。

2014届九年级上第二次月考物理试题

2014届九年级上第二次月考物理试题

2014届九年级上第二次月考物理试题一、选择题(本题共12小题,每小题2分,共24分)1.一根锰铜线的电阻为R,要使这根连入电路的导线电阻变小,可采用的方法是A.减小导线两端的电压 B.增大导线中的电流C.将导线对折后连入电路 D.将导线拉长后连入电路2.小明去商场购物,自动扶梯将他从一楼匀速送上二楼,在这个过程中,他的A.势能不变,动能不变,机械能不变B.势能不变,动能增大,机械能增大C.势能增大,动能不变,机械能增大D.势能增大,动能增大,机械能增大3.如图所示的四种情景中,所用杠杆属于费力杠杆的是4.登楼梯比赛中,小明同学从一楼登上五楼用了12s,则他登楼的功率最接近于A.5W B.50W C.500W D.5000W5.水具有比热容较大的特点,下列现象及应用与此特点无关..的是A.沿海的昼夜温差比内陆小 B.夏天,在教室地面上洒水,感觉变凉爽C.冬天的暖气设备用热水供暖 D.育秧时,傍晚向秧田里灌水6.如图所示的电路图中,电源电压一定,闭合开关,滑动变阻器的滑片P从中点向上移动的过程中,以下说法正确的是A.电流表的示数变大,电压表的示数不变B.电流表的示数变小,电压表的示数不变C.电流表的示数变大、电压表的示数变小D.电流表的示数变小,电压表的示数变大7.如图所示,是探究“电流与电阻的关系”实验电路图,电源电压保持3V不变,滑动变阻器的规格是“10Ω 1A”。

实验中,先在a、b两点间接入5Ω的电阻,闭合开关S,移动滑动变阻器的滑片P,使电压表的示数为2V,读出并记录下此时电流表的示数。

接着需要更换a、b间的电阻再进行两次实验,为了保证实验的进行,应选择下列的哪两个电阻A.10Ω和40Ω B.20Ω和30Ω C.10Ω和20Ω D.30Ω和40Ω8.下列生活场景中,通过做功来改变物体内能的是A.搓动双手感到暖和 B.用嘴向手“哈气”感到暖和C.冬天晒太阳感到暖和 D.围坐火炉烤火感到暖和9.如图所示,小华在探究串联电路中的电压关系时,闭合开关,测出ab、bc、ac两端的电压分别为U ab=2V,U bc=2V,U ac=4V,在表格中记录数据后,下一步应该做的是A.整理器材,结束实验B.分析数据,得出结论C.换用不同规格的小灯泡,再测出几组电压值0 0.1 0.2 0.30.4 0.5 0.6 0.5 1 1.5 2 2.5 3 D .换用电压表的另一量程,再测出一组电压值10.为保证司乘人员的安全,轿车上设有安全带未系提示系统.当乘客坐在座椅上时,座椅下的开关S 1闭合,若未系安全带(安全带控制开关S 2断开)仪表盘上的指示灯将亮起;当系上安全带时(安全带控制开关S 2闭合),指示灯熄灭.如图所示的有关电路设计中最合理的是11.如图所示,当开关闭合时,灯L 1、L 2都不亮,电流表无示数,但电压表示数较大.则故障原因可能是A .L 1断路B .L 1短路C .L 2短路D .L 2断路12.某型号天然气泄漏检测仪器的电路如图甲所示,图中R 为气敏电阻,其阻值R 与天然气浓度β的变化关系如图乙所示,已知R 0为定值电阻,电源电压恒定不变,用此仪器检测天然气是否泄漏,则下列判断正确的是A .天然气浓度增大时,电压表示数变小B .天然气浓度减小时,电流表示数变大C .天然气浓度减小时,电路的总电阻变小D .无论天然气浓度怎样变化,电压表与电流表示数的比值不变二、填空题(本题共10小题,每空1分,共25分)13.滑轮在生活中有着广泛的应用,在需要改变力的方向时,要使用 ▲(选填“定滑轮”或“动滑轮”);在需要省力时,要使用 ▲ (选填“定滑轮”或“动滑轮”).14.很多化学反应需要在加热的条件下进行.从物理学的角度看,加热是通过 ▲ 的方式增加反应物的内能,反应物温度越高,分子运动越 ▲ (选填“快”或 “慢”).15.小华用100N 的力沿水平方向推重500N 的物体做匀速直线运动,在10s 内移动了5m ,则物体的速度为 ▲ m/s ,小华做的功是 ▲ J ,功率是 ▲ W .16.汽车上的散热器用水作为冷却剂,这是利用了水的 ▲ 较大的性质;散热器中装有10kg 的水,在温度升高20℃的过程中,水吸收的热量是 ▲ J.这些热量相当于完全燃烧 ▲ kg 的天然气放出的热量【水的比热容c 水=4.2×103J/(kg·℃),天然气的热值q=8.4×107J/kg 】.17.在某一温度下,两个电路元件A 和B 中的电流与其两端电压的关系如图所示。

2014届九年级数学上学期第二次月考试题 (新人教版 第10套)

2014届九年级数学上学期第二次月考试题 (新人教版 第10套)

观音中学2014初九年级(上)第二次月考数学试题题卷(满分120分,时间120分钟)一、选择题(每小题3分,共30分)每小题给出四个答案,其中只有一个符合题目的要求,请把选出的答案编号填在第二卷的答题表一内,否则不给分.1、我们从不同的方向观察同一物体时,可以看到不同的平面图形,如图,从图的左面看这个几何体的左视图是A B C D 答案:B2、方程x 2= 2x 的解是A 、x=2B 、x 1=2-,x 2= 0C 、x 1=2,x 2=0D 、x = 0 答案:C 3、函数y=xk(k ≠0)的图象过点(2,-2),则此函数的图象在平面直角坐标系中的 A 、第一、三象限 B 、第三、四象限 C 、第一、二象限 D 、第二、四象限 答案:D4、在同一坐标系中,函数x ky =和3+=kx y 的图像大致是A B C D 答案:A5、方程2650x x +-=的左边配成完全平方后所得方程为A 、 14)3(2=+xB 、14)3(2=-xC 、21)6(2=+x D 、以上答案都不对 答案:B6、如图,在ABCD 中,对角线AC 、BD 相交于点 O ,若BD 、AC 的和为18 cm ,CD ︰DA=2︰3,△AOB 的周长为13 cm ,那么BC 的长是 A.6 cm B.9 cm C.3 cm D.12 cm 答案:A7、当你乘车沿一条平坦的大道向前行驶时,你会发现,前方那些高一些的建筑物好像“沉”到了位于它们前面那些矮一些的建筑物后面去了。

这是因为 A 、汽车开的很快 B 、盲区减小 C 、盲区增大 D 、无法确定 答案:C8、在同一时刻,身高1.6m 的小强的影长是1.2m ,旗杆的影长是15m ,则旗杆高为 A 、 16m B 、 18m C 、 20m D 、 22m 答案:C 9、如图,在梯形中,∥,∠∠90°,分别是的中点,若cm ,cm ,那么A.4 cmB.5 cmC.6.5 cmD.9 cm 答案:A10、下列各函数中,反比例函数有:○1.12y = ○2.y = ○3.y =○4.21y x =- ○5.21y x = ○6. 31xy = A 1个 B 2个 C 3个 D 4个答案:C二、填空题:(每小题3分,共24分)请将答案填入第二卷的答题表内,否则不给分。

2014年春九年级第二次月考试卷 数学

2014年春九年级第二次月考试卷    数学

第3题 第5题第8题第13题2014年春九年级第二次月考试卷数 学一、选择题(每小题3分,共24分)1.下列运算正确的是( )A.4=±2B.2-3=-6C.x 2·x 3=x 6D.(-2x )4=16x 42.方程x (x -2)=3(x -2)的根是( )A.x =2B.x =3C.x =2或x =3D.x =13.如图,已知A(5,0),直线y=x+b 交y 轴于点B ,连接AB ,∠α=75°,则b 的值是( )A.3B.4C.335D.4354.已知函数y =(k -3)x 2+2x +1的图像与x 轴有交点,则k 的取值范围是( )A.k <4B.k ≤4C.k <4且k ≠3D.k ≤4且k ≠35.如图,AB ∥EF ∥CD ,∠ABC=46°,∠CEF=154°,∠BCE 等于( )A.23°B.16°C.20°D.26°6.如图边长为1的等边△ABC 的边AB 上一点P 作PE ⊥AC 于E ,Q 是BC 边延长线上一点,当PA=CQ 时,连PQ 交AC 边于D ,则DE 的长为( )A.31B.21C. 32D.无法确定7.一组数据-1、0、3、5、x 的极差是7,那么x 的值可能是( )A.1个B.2个C.3个D.4个8.如图为一圆柱体物体,高AB=5,底面直径为π24,现有一蜘蛛在B 处,一只小虫在D 处,若蜘蛛要捕捉小虫,则它爬行的最短距离是( ) A.13 B.5+π24C.17D.12二、填空题(每小题3分,共24分)9.函数y=12--x x 中,自变量x 的取值范围是__________10.因式分解a 2+ab -b -1=___________11.方程组⎩⎨⎧=+=+54ay bx by ax 的解是⎩⎨⎧==12y x 则a+b =________12.不等式组⎩⎨⎧-<a x >x 2有3个整数解,则a 的取值范围是_________13.如图,在5×5的正方形网格中,每个小正方形的边长都是1,A 、B 、C 三点都在网格上,CD ⊥AB 于D ,则CD 的长为_________ 14.如图△ABC 中,∠C=90°,点D 在BC 上,BD=6,AD=BC , cos ∠ADC=53,则DC 的长为_________ 第14题图 第15题图 第16题图 15.如图,在Rt △ABC 中,∠ABC=90°,∠ACB=30°,将△ABC 绕点A 按逆时针方向旋转15°得到△AB 1C 1,B 1C 1交AC 于点D ,如果AD=2,则△ABC 的周长等于_______ 16.二次函数y=ax 2+bx+c (a≠0)的图像如图所示,有下列5个结论: ①ab c >0; ②a+c >b ; ③4a +2b +c <0; ④2c <3b ; ⑤a+b <m (am+b )(m≠1), 其中正确的结论序号为______________ 三、解答题(共72分) 17.先化简分式:2332)343(++⋅+-÷++-a a a a a a a ),再从-3、35-、2、-2中选一个你喜欢的数作为a 的值代入求值。

2014年秋季九年级第二次月考数学试题(含答案)

2014年秋季九年级第二次月考数学试题(含答案)

(九年级第二次月考 数学试卷 共6页 第1页) (九年级第二次月考 数学试卷 共6页 第2页)2014年秋季九年级第二次月考数学试卷考试时间:120分 满分:120分(本题共10个小题,每小题3分,共30分)的方程2320ax x -+=是一元二次方程,则( ) B 、0a ≠; C 、1a =; D 、a ≥0. 1)x x -=的根是( )B 、2x =-;C 、12x =-,20x =;D 、12x =,20x =.a 吨化肥,以后每季度比上一季度增产的百分率都是x ℅, )2); B 、2(1)a x +%; C 、2(1%)x +; D 、2(%)a a x +.2(2)3y x =-- ( )时,y 的最小值是-3 ; B 、当x =2时,y 的最大值是-3; 2时,y 的最小值是-3; D 、当x =-2时,y 的最大值是-3x 的一元二次方程01)12(2m 22=+++-x m x )(有两个实数根,则m 的 )B 、43≥mC 、43>m 且2≠mD 、43≥m 且2≠m)()82222=-+b a b ,则=+22b a ( )、-2 C 、4或-2 D 、2 122--=x x y 配方成顶点式为( ) 2)1-B 、2)1(2--=x yC 、1)1(2++=x yD 、2)1(2-+=x y8.直角坐标平面上将二次函数y =-2(x -1)2-2的图象向左平移1个单位,再向上平移1个单位,则其顶点为( )A 、(0,0)B 、(1,-2)C 、(0,-1)D 、(-2,1) 9、已知二次函数y=ax 2+bx+c 的图象如图所示,则下列结论中,正确的是( )A 、ab>0,c>0B 、ab>0,c<0C 、ab<0,c>0D 、ab<0,c<010、根据下表中的二次函数c bx ax y ++=2的自变量x 与函数y 的对应值,可判断二次函数的图像与x 轴【 】x … -1 0 12 …y … -147--2 47- … A 、只有一个交点B 、有两个交点,且它们分别在y 轴两侧C 、有两个交点,且它们均在y 轴同侧D 、无交点二、填空题(本题共8个小题,每小题3分,共24分) 11、方程:0252=-x 的解是__________________12、关于x 的一元二次方程22(1)10a x x a -++-=的一个根是0,则a 的值为 13、写出一个有一根为2x =的一元二次方程:__________________ . 14、已知 12x x 、是方程2x -2x -1=0的两根,则1211x x +等于 15、函数562)1-(-+=m m xm y 是二次函数,则m=16、已知抛物线2y a x b x c =++(a >0)的对称轴为直线1x =,且经过点()()212y y -1,,,,试比较1y 和2y 的大小:1y2y (填“>”,“<”或“=”) 17、抛物线m x x y +--=22与 x 轴只有一个交点,则=m18、二次函数322--=x x y 的图象关于x 轴对称的图象的解析式是_________________。

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衡阳市船山英文学校中学部2014年初三第二次月考英语试题Ⅰ.听力技能(25分)A ) 对话理解。

听对话,选择最佳选项。

(10分) 听下面五段对话,每听完一段对话,回答一个小题 ( ) 1. Why will Jenny go to Africa?A. To help the homelessB. To studyC. To have a trip ( ) 2. What ’s the population of the city now?A. Less than 1,500,000B. 1,500,000C. More than 2,000,000 ( ) 3. Why doesn ’t the woman like living in the big city?A. Because of the heavy trafficB. Because of too much noiseC. Because of too many people( ) 4. What does Mike do to protect the environment?A. He often reduces waste paperB. He often recycles paper boxesC. He often reuses plastic bags( ) 5. When did the boy ’s father come to the city?A. About two years agoB. One year agoC. Half a year ago 听第六段对话,回答6-7小题( ) 6. How does Helen go to school every day?A. By bikeB. By carC. By bus ( ) 7. Why does Dale go to school by bike?A. Because he doesn ’t like to take a carB. Because there are too many people on the busC. Because he wants to help reduce air pollution 听第七段对话,回答8-10小题( ) 8. Where does the young girl want to go with her father?A. To the parkB. To the libraryC. To the cinema ( ) 9. What time will they leave?A. At about 2:00 pmB. At about 2:45 pmC. At about 3:00 pm ( ) 10. What do the girl ’s family probably do after walking?A. Have a bathB. Go to a restaurantC. Watch TV B ) 笔录要点。

听内容,填写表格,每空一词。

(5分)年级________ 班级_______ 姓名______ 学号_______考室号_______座位号___________ ————————密————————封——————————线————————C)短文理解。

听短文,判断句子正(T)误(F)。

(10分)( ) 16. The club is a new club.( ) 17. The club has more than fifty members now.( ) 18. The members in the club watch movies on Thursday evenings.( ) 19. The members in the club sometimes eat together on weekdays.( ) 20. The members in the club usually play sports together on weekends.Ⅱ.知识运用(20分)A)单项选择。

(10分)( ) 21. —Have you had lunch _______ ?—Yes, I’ve _______ it.A. yet; everB. ever; alreadyC. yet; already( ) 22. —Song Zuying sings so well. I like her very much.—_______.A. So am IB. So do IC. So I do( ) 23.With the _______ of computer science, people can get information easily now.A. reportB. developmentC. record( ) 24. There is a little boy _______ in the classroom.A. criesB. cryingC. cried( )25.I don’t like living in the city because there are _______people and there is _______traffic.A. too many; too manyB. too much; too manyC. too many; too much( ) 26. His leg was hurt. _______, he didn’t take part in the football match.A. As a resultB. At leastC. For example( ) 27. —_______ it is!—Yes. It has been raining for a week.A. How a bad weatherB. How bad weatherC. What bad weather( ) 28.Work hard, _______you will fail the exam.A. butB. soC. or( ) 29. _______ of the students in my class _______ taken part in the game.A. Two fifths; hasB. Two fifth; hasC. Two fifths; have( ) 30. —I fed the ducks and enjoyed delicious food on the farm.—_______ !A. Good ideaB. How interestingC. What a pityB)完形填空。

(10分)阅读短文,从A,B,C,三个选项中,选出一个最佳选项。

I can't remember when I started collecting litter. But it was when I got tired of 31 litter nearby that I realized no one else was going to pick it up.I live near a forest in Ohio, America. I can walk there 32 three minutes. I used to love going there to play with my dog. But one day there was 33 much litter there that I became very unhappy. I decided to clean up the forest, and I wanted to 34 happy when I went there again. I made my first trip to clean the forest that afternoon. I took a big black rubbish bag with me. Ten minutes 35 I started to pick up litter, my bag was full! There were cans, bottles, broken glass and newspapers in it.From then on, I 36 to the forest four times a year to pick up litter. I often stay there for three hours. It makes me feel 37 to do something for the environment. After each trip, I look through all the litter that I've collected. If 38 of it is recyclable (可回收利用的), I'll keep it. I can't understand why people drop litter. But I will keep on picking it up 39 they stop dropping it. I know I am only doing a small bit 40 the earth, but I still think it is important.( )31. A. seeing ( )32. A. after ( )33. A. such ( )34. A. make ( )35. A. after ( )36. A. had gone ( )37. A. tired ( )38. A. many ( )39. A. until ( )40. A. helped B. throwingB. forB. veryB. feelB. laterB. have goneB. greatB. fewB. afterB. to helpC. droppingC. inC. soC. lookC. beforeC. goC. interestingC. anyC. as soon asC. helpⅢ.阅读技能(40分)A阅读下面文章,并根据短文判断句子正误,正确的用(T),错误的用(F)。

(10分)Stop and listen! What do you hear? You may hear many different sounds. Some of those sounds may be noise. Noise is a loud or unwanted sound.Many kinds of machines, such as motorcycles can cause noise, jet planes (喷气式飞机), farm tractors, and power motors. And, to some people, rock music is also a noise.What happens to people who live near noisy machines or use them over a period of time? Doctors have found that these people have trouble in sleeping. And most importantly, constant (连续的) loud noise can cause loss of hearing.Scientists use a unit of measure called a decibel(分贝) to measure the loudness of a sound. The sound of a quiet room, for example, measures 35 decibels. Talking measures between 40 and 65 decibels. Sounds from traffic and from some rock bands measure over 120 decibels. Noise at such high level causes the greatest hearing loss.( )41. According to the passage, noise is all sounds that you can hear.( )42. A “decibel” is a machine tha t makes loud noise.( )43. Loud noise can help people sleep better.( )44. Not all people think that rock music is a noise.( )45.We can infer (推断) from the passage that noise is a serious problem.B阅读下面的短文,并根据短文内容回答问题。

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