2010-2011学年度临沂费县第一学期九年级期末考试

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山东省临沂费县联考2025届英语九年级第一学期期末考试试题含解析

山东省临沂费县联考2025届英语九年级第一学期期末考试试题含解析

山东省临沂费县联考2025届英语九年级第一学期期末考试试题考生须知:1.全卷分选择题和非选择题两部分,全部在答题纸上作答。

选择题必须用2B铅笔填涂;非选择题的答案必须用黑色字迹的钢笔或答字笔写在“答题纸”相应位置上。

2.请用黑色字迹的钢笔或答字笔在“答题纸”上先填写姓名和准考证号。

3.保持卡面清洁,不要折叠,不要弄破、弄皱,在草稿纸、试题卷上答题无效。

Ⅰ. 单项选择1、The schoolbag looks so nice. Is it _______?A.your B.yours C.you2、Father’s Day is on _________ Sunday of June.A.three B.the three C.third D.the third3、It is blowing hard outside. Tell the boy _______Michael _______the window.A.call; to open B.called; to openC.called; not to open D.call; don’t open4、Summer is coming. ___________perfect time to _________!A.How a; go swimming B.What a; go swimmingC.How; swimming D.What; swimming5、—Sonia, is this your dictionary?—Oh, no, it’s not _______. Ask Tom, he is looking for ______.A.mine, his B.my, him C.me, his D.yours, his6、______ young in our village are now living ______ much more comfortable life than we did.A.A; 不填B.The; the C.A; a D.The; a7、—Excuse me, are you _______?—No, we are _______.A.American, Englishman B.Americans, GermansC.American, Germen D.Englishman, American8、The movie is most exciting one and I expect to see it for second time.A.the; a B.the; the C.a; the D.a; a9、“______ there’s still much work to be done, the people’s government will not let the people down.” Pre mier Li said on March 5 in Beijing.A.Because B.Unless C.If D.Although10、Most boys _______ blue to pink while most girls _______ wear pink than blue.A.would rather, prefer B.prefer, would ratherC.would rather, would rather D.prefer, preferⅡ. 完形填空11、My son Tony was born with club feet. The doctors said that with treatment he would be able to walk, butwould never run very well. The first three years of his life was 1 in hospital. By the time he was eight, you wouldn’t know he has a probl em when you saw him 2 .We never told him that he probably wouldn’t be 3 to run like the other children. So he didn’t know. In4 grade he decided to join the school running team. Every day he trained. He ran more than any of the others,5 only the top seven runners would be chosen. We didn’t tell him he probably would never make the team, so he didn’t know.He ran four to five mile every day—even when he had a fever. I was 6 , so I went to 7 him after school. I found him running 8 . I asked him how he felt. “Okay,” he said. He has two more miles to go. Yet he looked straight ahead and kept running.Two weeks later, the names of the team 9 were out. Joey was number six on the list. Joey had 10 the team. He was in seventh grade —the other six team members were all eighth graders. We never told him he couldn’t do it, so he didn’t know, but he made it.1.A.spent B.taken C.cost D.paid2.A.talk B.sit C.study D.walk3.A.able B.sorry C.glad D.afraid4.A.sixth B.seventh C.eighth D.ninth5.A.so B.if C.then D.because6.A.excited B.tired C.worried D.pleased7.A.look for B.hear from C.agree with D.think about8.A.alone B.away C.almost D.already9.A.jumpers B.runners C.doctors D.teachers10.A.got B.kept C.made D.foundⅢ. 语法填空12、for learn purpose help always skill when easy warn in they becauseThere are more and more electronic products like smart phones in our life. However, doctors have 1.that children are finding it hard to hold pencils because of too much use of electronic products.“Too much use of smart phones is stopping children’s finger muscles(肌肉) from developing. It makes 2.unable to hold a pencil correctly,” they said. “Children are given a pencil, but they are not be able to hold it 3.the y don’t have the basic movement skills.”Payne said the nature of play had changed. “It’s 4.to give a child an iPad than encouraging him to domuscle-building play like building blocks. Because of this, they’re not developing the 5.they need to hold a pe ncil.”Six-year-old Patrick has been having weekly training classes 6.six months. The 7.is to help him develop the necessary strength in his fingers to hold a pencil.His mother regretted that she 8.gave Patrick electronic products to play with instead of traditional toys. When he got to school, he couldn’t hold pencils and 9.to write because he couldn’t move pencils correctly. “The training classes are 10.a lot and I’m really strict with his use of electronic products now,” she said.Ⅳ. 阅读理解A13、Do you know why different animals or pests (昆虫) have their special colors? Colors in them seem to be used mainly to protect themselves.Some birds like eating locusts (蝗虫), but birds cannot easily catch them. Why? It is because locusts change their colors together with the change of the colors of____When crops are green, locusts look green. But as the harvest time comes, locusts change to the same brown color as crops have. Some other pests with different colors from plants are easily found and eaten by others. So they have to hide themselves for lives and appear only at night.If you study the animal life, you’ll find the main use of coloring is to protect themselves. Bears, lions and other animals move quietly through forests. They cannot be easily seen by hunters (猎人). This is because they have the colors much like the trees.Have you ever noticed an even stranger act? A kind of fish in the sea can send out a kind of very black liquid (液体)when it faces danger. While the liquid spreads over (散开), its enemies (敌人)cannot find it. And it immediately swims away. So it has lived up to now though it is not strong at all.1.From the passage we learn that locusts________.A.are small animalsB.are easily found by birdsC.change their colors to protect themselves2.How can pests with different colors from plants keep out of danger?A.They run away quickly.B.They have the colors much like their enemies.C.They hide themselves by day and appear at night.3.What does the underline phrase“crops”mean?A.灌木丛B.庄稼C.水草4.Which of the following is NOT TRUE?A.Bears and lions can keep safe because their colors are like the treesB.Some pests can’t change their colors with the crops.C.The kind of fish can live up to now because its black liquid can kill its enemies.5.Which is the best title for this passage?A.The Change of Colors for Animals and PestsB.The Main Use of Colors for Animals and PestsC.Colors of Different Animals and PestsB14、Are you having a problem going to sleep? Have you tried many ways such as drinking a glass of warm milk or listening to some soft music or counting sheep but it still does not work? Cooling down your brain may be a great way to help you get good sleep.A new study has found that you might fall asleep quicker if you try cooling down your brain. Daniel and Eric from the University of Pittsburgh Medical School led the study. They examined twelve people who had insomnia. The other twelve had no problems in sleeping. Each of them wore a cap on their heads at bed time.The caps had tubes (管) inside filled with water. The researchers moved the water through the tubes and then changed the temperature of the water. People had trouble sleeping (called “patients” in the following parts of the passage) often had more chemical reactions (化学反应) in their brains. The researchers thought lowering the temperature of the head might help.On the first two nights of testing, the patients wore no water caps. During the next two nights, the caps were worn, but the water was not cooled. Then the researchers cooled the water a little for another two nights. On the final two nights of the study, the temperature of the water was made much cooler.The situation of the insomnia did not become better until the temperature was about 14ºC.Most of the patients fell asleep faster and slept better when the coolest water was moving around their heads.This is the only beginning of the head temperature study. But they believe they have discovered something important that needs more research.1.A new study to help people fall asleep quicker is _________.A.counting sheep B.listening to soft musicC.cooling down your brain D.drinking a glass of warm milk2.What’s the meaning of the underlined word “insomnia”?A.抑郁症. B.失眠症. C.自闭症. D.头痛.3.According to the passage, the test lasts for _________ nights.A.12 B.10 C.8 D.64.Insomnia patients became better when _________.A.the water was cooled about 14ºC B.The caps were filled with waterC.the water was not cooled D.the water caps were worn on their headsC15、Play Park lifeGet some exerciseBrighton24th September – 14th DecemberParklife is the university’s recreational sports programe looking to get you involved in sporting activity regardless of ability and without the commitment of regular training. S upported by the university, Students’ Union and Sport England Lottery funding each session will never cost you more than £1 to take part! This term’s sports include: Badminton, Basketball, Football, Handball, Hockey- Indoor, Judo, Swimming, Table Tennis, Volleyball.Denotes sessions are free, all other sessions are £1.1.How many kinds of sports are there in Parklife?A.5 B.9 C.13 D.182.What kind of sport can you do most of the days?A.Swimming. B.Football. C.Badminton. D.Basketball.3.If Jack likes football, tennis and indoor hockey and he is free at 4pm on Thursday on 27th September, where can he play a sport?A.Prince Regent Pool. B.Cockcroft Sports Centre.C.Falmer Artificial Pitch. D.Falmer Sports Centre.4.Which of the following statements is TRUE?A.All sessions cost £1.B.All sessions start from 24th September.C.Y ou can play table tennis at 6pm in Falmer Sports Centre on 5th October.D.If you want to play basketball on Wednesday, you need to book first.5.What is Parklife?A.It is a sports program supported by the university.B.It is a kind of university sports.C.It is a Students’ Union to get you involved in sporting activity.D.It is a free regular sports training.D16、When US student Olivia Priedeman, 17, woke up one morning, she thought she had had a dream about making plans with a friend.But it wasn’t a dream. Her phone showed that during the night, Priedeman had read a text message from her friend. She did it while she was fast asleep.Reading and sending text messages while asleep—called “sleep texting”—is an unusual sleep behaviour, similar to sleepwalking. It’s also a growing concern(关心的事) among doctors: young people can’t live without their cell phones. One in three teenagers sends more than 100 text messages a day, according to the Pew Internet & American Life Project. And at least four out of five teenagers said they sleep with their phone on or near their bed.Elizabeth Dowdell, a professor at Villanova University in Pennsylvania, has studied sleeping texting. She said that having a phone nearby all night is a big part of the problem.Andrew Stiehm, a sleep medicine expert with Allina Health in Minnesota, agrees. It’s possible for the part of the brain that controls motor skills (动作技能) to wake up, while the part of the brain that controls memory and judgment(判断) may be still asleep. That’s why some people can perform basic movements ---such as walking, talking, texting or even driving—while they’re sleeping. Some of Dowdell’s students said that they’re disturb ed by their nighttime texting behavior. But because sleep texting is unconscious, it’s a difficult habit to break. Dowdell said she knows of some students who wear socks on their hands to keep themselves from texting.Marjorie Hogan, a doctor at Hennepin County Medical Center in Minneapolis, Minnesota, suggests keeping all electronic devices(电子设备) outside the bedroom at certain times.1.What happened to Olivia Priedeman?A.She sleepwalked to a friend’s house.B.She dreamed of making plans with a friend.C.She phoned one of her friends during the night.D.She read a text message from her friend while asleep.2.. Which part the brain controls keeps awake while asleep?A.judgment B.languageC.memory D.motor skills3.What does the underlined word “unconscious” mean?A.无法B.无意识的C.无反应的D.无规律的4.. What does doctor Hogan suggest people who sleep text do?A.Stop text during the daytime.B.Take some medicine to control the behaviour.C.Keep their phones out of their bedrooms while they sleep.D.Wear socks on their hands to stop themselves from texting.5.We can learn from the passage that ________.A.It’s easy to give up a sleep texting habit.B.One in three teenagers has a sleep texting habit.C.Sleep texting can reduce the quality of one’s sleep.D.Sleep texting does more harm to one’s health than sleepwalking.E17、What is Britpop? That’s a good question. The music is certainly very catchy. You can often recognize a Britpop song as soon as you hear it. Some of the biggest Britpop bands include Oasis, Blur, Suede and Pulp. However, bands like Oasis that are considered Britpop have more of a rock style (风格).So how do we recognize the difference between Britpop and regular rock or pop? Well, Britpop mixes a number of different pop and rock styles with inte resting lyrics and attitude. But it’s not just about the music. Britpop is also about fashion, art and politics (政治).If you watch their music videos, you’ll see how fashionable Britpop singers are. Some of them hire famous artists to help them make more c reative videos. English artist Damien Hurst, for example, produced some of Blur’s music videos.As for politics, former UK Prime Minister Tony Blair has talked about how much he enjoys Britpop. Perhaps he was just trying to sound cool to win more votes (投票) from young people.Britpop came and went in the 1990s. Britpop bands had some big hits at the time. Pulp’s most famous song is Common People. Blur’s Country House is about a wealthy man who lives a boring life in a big house in the countryside. Blur and Oasis were probably the most popular bands.However, just like many fashion and art trends (潮流), Britpop didn’t stick around for long. By the end of the 1990s, Britpop was no longer fashionable. Fewer songs were produced and most Britpop bands broke up.1.According to the story, what is Britpop?A.The name of a British band. B.A type of music.C.A kind of music video. D.The name of a British singer.2.Which of the following is true about Britpop?A.It is a mixture of different pop and rock styles.B.It is about songs without lyrics.C.It is only about art and politics.D.It copied works of famous artists.3.What does the underlined phrase “big hits” in Paragraph 5 refer to in the passage?A.Creative English artists.B.Supporters and fans.C.Fashionable Britpop singers.D.Popular Britpop songs and bands.4.What can we learn from this passage?A.Damien Hurst was one of the best Britpop singers.B.Tony Blair got more votes for listening to Britpop.C.Britpop was a big trend in the 1990s.D.Britpop is getting popular again.5.In which column of a magazine can you read the text?A.Science. B.Sports. C.Fashion. D.Business.F18、The Chinese tradition of giving gifts of money in red envelopes at Lunar New Year has turned into big business for Web giants Alibaba and Tencent, which now both offer electronic "hong bao".At the end of each lunar year, it is common in China to give children hong bao -- some money in envelopes that are red, the colour of success. But now theold also take part in this activity.It is now possible to exchange "red envelopes" with smartphone, which is popular in China and has caused a battle(战争) for thelucrativemarket between the two companies providing the service, Tencent and Alibaba."You don't have to pay the same cost or wait as long as you would for a traditional bank transfer(转账). It's more convenient, simple and fun," Wang Le, a 28-year-old Beijinger, told AFP. " With electronic red envelopes, you're not limited by your identity(身份)or the time of year. It's a new, fresh way of playing the game."The idea was introduced in 2014 by WeChat, a mobile messaging system with over 400 million users and run[by Tencent,China's largest Internet service system. It was successful at once.This year, Alipay Wallet(阿里支付宝), the payment system run by Alibaba, is ready to take on the competition. It is allowing its 190 million users to send digital gifts, especially on the Twitter-like Sina Weibo.For the past few weeks a digital battle has been terrible, with Tencent banning (禁止)Alipay from sending red envelopes on WeChat, saying they were at a risk. Recently, WeChat also blocked(封锁) Alibaba's music app Xiami.To attract the public's attention, the two companies have launched lotteries through which they award red envelopes to users in an online game.It's easy to send and receive hong bao or take part in the lotteries: you simply need to register (登记)your bank details. According to market research group iResearch, Alipay controls 82.6 percent of the Chinese mobile phone payment market, compared to 10 percent for Tencent's Tenpay.1.Which Web giants now offer electronic "hong bao"?A.Alibaba B.TencentC.Alibaba and Tencent D.Sina Weibo2.According to the passage, what’s the popular trend for people to send “red envelopes” ?A.Sending "red envelopes" through short messagesB.Sending "red envelopes" through a vedios.C.Sending "red envelopes" through smartphones.D.Sending "red envelopes" through Express.3.What does the underlined word “lucrative” mean?A.利润丰厚的B.富有想象力的C.平滑的D.好奇的4.Which one is TRUE according to the passage?A.Tencent allows Alipay to send red envelopes via Wechat.B.The idea of electronic red envelope was introduced by Wechat in 2014.C.It’s complicated (麻烦的) to send and receive hongbao or participate in the lotteries.D.Alipay controls a sm aller payment market of the Chinese microphone thanTencent’s Tenpay.5.What’s the main business purpose for Tencent and Alibaba launch lotteries?A.To catch the new fashion on the website.B.To raise money from netizens.C.To obtain a better reputation.D.To gain many more new App users.Ⅴ.书面表达19、假定你是李华,深圳国际学校学生会主席。

2010-2011学年度九年级上第一学期月质量检测数学试题

2010-2011学年度九年级上第一学期月质量检测数学试题

2010-2011学年度第一学期月质量检测九年级数学试题考试时间:120分钟 试卷满分:150分一、单项选择题(本题共8小题,每小题只有1个选项符合题意。

每小题3分,共24分)1、若1-a 有意义,则a的取值范围是 ( )A、任意实数 B、a1≥ C、a1≤ D、a0≥2、我国发现的首例甲型H1N1流感确诊病例在成都某医院隔离观察,要掌握他在一周内的体温是否稳定,则医生需了解这位病人7天体温的 ( ) A .众数 B .方差 C .平均数 D .频数3、顺次连结菱形四条边的中点,所得的四边形一定是 ( )A 、平行四边形.B 、菱形C 、矩形.D 、正方形. 4、将一元二次方程(2x-1)(x+1)=1化成一般形式可得 ( ) A 2x 2+x=0 B 2x 2+x-1=0 C 2x 2+x+1=0 D 2x 2+x-2=0 5、下列计算正确的是 ( )A 、2+3=5B 、2+2=22C 、32-2=22D 、2818-=49-6、关于x 的方程:kx 2+3x-1=0有实数根,则k 的最值范围是 ( )A. 49-≤k B. 49-≥k 且k ≠0 C. 49-≥k D. 49->k 且k ≠07、如图,点O 是矩形ABCD 的中心,E 是AB 上的点,沿CE 折叠后,点B 恰好与点O 重合,若BC =3,则折痕CE 的长为 ( )A.2 3B.332C. 3D.6BC第12题图 8、将n 个边长都为l cm 的正方形按如图所示的方法摆放,点A 1,A 2,……,A n分别为正方形的中心,则n 个这样的正方形重叠部分(阴影部分)的面积之和为 ( ).A .41cm 2 B .41n cm 2C.41-n cm 2 D .n 41( cm 2二、填空题(本题共10小题,每空3分,共30分)9、一组数据是1 ,-2 ,4 ,-6 ,0 这组数据的的极差是___________. 10、一元二次方程x 2-4=0的解是 .12、已知:菱形ABCD 中,对角线AC = 16 cm ,BD = 12 cm ,则菱形ABCD 的面积为 .13、已知m 是方程x 2-x-2010=0的一个根,则m 2-m+1的值是 . 14、“反证法”证明命题“等腰三角形的底角是锐角”时,是先假设 。

海陵区2010-2011学年度第一学期期末考试九年级数学试卷及答案

海陵区2010-2011学年度第一学期期末考试九年级数学试卷及答案

海陵区2010-2011学年度第一学期期末考试九年级 数学试题(考试时间:120分钟,满分:150分) 成绩一、选择题(下列各题所给答案中,只有一个是正确的,请将正确答案的代1、方程 ①432=+ ②1232-=-y y ③035222=+-y xy x ④0312=+-xx 中,是一元二次方程的为 ( ▲ ) A、① B、② C、③ D、④ 2、下列四个统计量中,不能反映数据波动大小的是 ( ▲ )A 、众数B 、极差C 、方差D 、标准差3、正方形具有而菱形不具有的性质是 ( ▲ )A 、对角线互相平分B 、对角线相等C 、对角线互相垂直D 、对角线平分对角4、两圆的直径分别为4和6,圆心距为1,则此两圆的位置关系是 ( ▲ )A 、外切B 、相交C 、内含D 、内切 5、若关于x 的方程0962=+-x kx 有两个不相等的实数根,则k 的取值范围是 ( ▲ )A 、k <1B 、k <1且k ≠0C 、k >-1且k≠0D 、k >1 6、在平行四边形、菱形、矩形、等腰梯形、正五角星、正六边形、圆中,既是轴对称图形又是中心对称图形的有 ( ▲ )A 、2个B 、3个C 、4个D 、5个7、若xy <0,则y x 2化简后的结果是 ( ▲ )A 、y xB 、y x -C 、y x --D 、y x - 8、如图,AB 是半圆O的直径,C 、D 是半圆O的三等分点,连接AD 、OD ,则图中阴影部分①、②、③的面积的大小关系是 ( ▲ ) A 、①>②>③ B 、②>③>① C 、①>③>② D 、③>①>②学校 班级 姓名 考试号---------------------------------------装-----------------------------订-------------------------线-----------------------------------------------二、填空题(每题3分,共30分) 9、函数4+=x y 中,自变量x 的取值范围是__________.10、化简=-2)3(π__________.11、已知2=x 是一元二次方程032=-+mx x 的一个根,则m 的值是__________.12、若一组数据1-,0,3,5,x 的极差是7,那么x 的值是__________. 13、某商品的价格经过连续两次降价后,由150元降至96元,设平均每次降价的百分率为x ,则所列方程是____________________.14、顺次连接对角线__________的四边形各边中点,所得的四边形是矩形. 15、如图,以Rt△ABC 的直角顶点C 为圆心,CB 为半径作圆交AB 于D ,若∠A =36°,则弧BD =__________度.16、如图,PA 、PB 是⊙O 的切线,切点分别为A 、B ,C 是⊙O 优弧AB 上的一点,若∠A PB =50°,则∠ACB =__________度.17、用半径为15cm ,圆心角为144°的扇形围成一个圆锥的侧面,则此圆锥的底面半径是__________cm .18、如图,E 是边长为4cm 的正方形ABCD 的边AB 上一点,且AE =1cm ,P 为对角线BD 上的任意一点,则AP +EP 的最小值是__________cm .三、解答题 19、(本题满分8分)计算: (1)8145461250-+- (2)60)3553(2+-20、(本题满分8分)化简二次根式: (1)3127a b (2)1682++x x )4(-≤x21、(本题满分8分)如图,矩形ABCD 的对角线AC 、BD 相交于点O ,AE∥BD,DE∥AC.求证:OE 与AD 互相垂直平分.22、(本题满分8分)如图,△ABC 内接于⊙O,AD 是△ABC 的高,AE 是⊙O 的直径,求证:∠BAE=∠DAC.23、(本题满分10分)解一元二次方程: (1)10)2(2=+x (2))4(5)4(+=+x x x (3)05622=-+x x 24、(本题满分10分)如图,在四边形ABCD 中,∠ABC=90°,AC =AD ,M 、N 分别为AC 、DC 的中点.(1)判断∠MBN 与∠MNB 是否相等; (2)证明你的结论.25、(本题满分10分)如图,PC与⊙O相切于点C,PO交⊙O于点A,弦AB∥PC.(1)求证:C是弧AB的中点;(2)若PC=12,PA=8,求⊙O的半径的长.26、(本题满分10分)某商场经销一批每件成本50元的服装,若按每件60元出售,可销售800件;若每件提价1元出售,其销售量就将减少20件.如果该商场销售这批服装要获得利润12000元,那么这种服装的单价应定为多少元?27、(本题满分12分)甲、乙两班举行电脑汉字输入速度比赛,各选10名学生参加,各班参赛学生每分钟输入汉字个数统计如下表:(1)填写上表中乙班学生的相关数据;(2)分别从中位数和方差两个方面评价甲、乙两班学生的比赛成绩.28、(本题满分12分)如图,I是△ABC的内心,∠BAC的平分线与△ABC的外接圆相交于点D,与BC相交于点E.(1)写出图中与△C AE相似的所有三角形;(2)求证:DI=DB;(3)求证:DI2=DE·DA.海陵区2010-2011学年度第一学期期末考试九年级 数学试题参考答案一、选择题1、B2、A3、B4、D5、B6、C7、D8、C 二、填空题9、4-≥x 10、3-π 11、21-=x 12、6或2-(仅填对一个可得2分)13、96)1(1502=-x 14、互相垂直 15、72 16、65 17、6 18、5三、解答题19、(1)624+ (2)1528120-20、(1)2621aab(2)4--x 21、证四边形AODE 是菱形22、连接BE ,证△ABE ∽△ADC 23、(1)102±-,(2)5,4- (3)2193±- 24、(1)(2分)相等;(2)证MB =MN 25、(1)连接OC ,证OC ⊥AB ;(2)设⊙O 的半径为r ,得方程222)8(12r r +=+,解得 5=r 26、设单价应定为x 元,得12000)]60(20800)[50(=---x x , 解得 80,7021==x x27、(1)(8分)众数是134,中位数134.5,平均数135,方差1.8; (2)(4分)从中位数看,甲班每分钟输入135字及以上的人数比乙班人数多; ②从方差看,s 甲2<s 乙2,甲班成绩波动小比较稳定. 28、(1)(4分)△DBE ,△DAB (2)(4分)连接BI ,证∠DBI =∠DIB(3)(4分)证△DBE∽△DAB,得DB2=DE·DA,再由(2)得DI2=DE·DA。

2010—2011九年级数学试卷

2010—2011九年级数学试卷

2010~2011学年度适应性测试九年级数学试题(满分:150分 考试时间:120分钟)友情提醒:本卷中的所有题目均在答题卡上作答,在本卷中作答无效。

一、选择题(本大题共8小题,每小题3分,共24分.每题的四个选项中,只有一个选项是符合要求的.) 1.若3)2(⨯-=x ,则x 的相反数是 A .61-B .61C .-6D .62.下列运算正确的是A .236·a a a =B . 221-=-C 4=±D .|6|6-=3.图中圆与圆之间不同的位置关系有 A .2种 B .3种 C .4种 D .4.5.为了解某小区居民的日用电情况,居住在该小区的一名同学随机抽查了l5户家庭的日用电量,结果如下表:则关于这l5户家庭的日用电量,下列说法错误的是A 众数是6度B 平均数是6.8度C 中位数是6度D 极差是5度 6.在平面直角坐标系中,对于平面内任一点(m,n ),规定以下两种变换:①(,)(,)f m n m n =-,如(2,1)(f =-;②(,)(,g m n m n =--,如(2,1)(g =--。

按照以上变换有:()()()3,43,43,4f g f =--=-⎡⎤⎣⎦,那么B . C . D .BD AC 第7题图 B 1()3,2g f -⎡⎤⎣⎦等于A.(3,2)B.(3,-2)C.(-3,2)D.(-3,-2)7. 如图,利用四边形的不稳定性改变矩形ABCD 的形状,得到□A 1BCD 1,若□A 1BCD 1的面积是矩形ABCD 面积的一半,则∠ABA 1的度数是A .15°B .30°C .45°D .60°8.已知:如图,点P 是正方形ABCD 的对角线AC 上的一个动点(A 、C 除外),作AB PE ⊥于点E ,作BC PF ⊥于点F ,设正方形ABCD 的边长为x ,矩形PEBF 的周长为y ,在下列图象中,大致表示y 与x 之间的函数关系的是二、填空题(本大题共10题,每题3分,共30分.把答案填在答题卡中对应的横线上).9.请写出一个图象在第一、三象限的反比例函数: 。

2010——2011学年下学期九年级期末考试

2010——2011学年下学期九年级期末考试

九 年 级 数学试题一、填空题(每题3分,共36分) 1、在ABC Rt ∆中,,21sin =A 则∠A =_______度.2、在ABC Rt ∆中,︒=∠90C ,若2,6==BC AB ,则=B cos .3、某水坝迎水坡的坡度是3:1,则它的坡角等于___________度 .4、等腰三角形中,腰长为5cm ,底边长8cm ,则它的底角的正切值是 .5、写出一个开口向下,且过(1、2)点的二次函数解析式______________.6、已知抛物线c bx x y ++=2过(1、2),(-1、4)点,则b+c 的值是________.7、抛物线1422++-=x x y 在x 轴上截得的线段长度是 .8、已知两圆的半径分别为2,5,且圆心距等于3,则两圆的位置关系是 .9、圆锥的侧面展开图是 形.10、如图,A,B,C 三点在⊙O 上,且AB 是⊙O 的直径,半径OD ⊥AC,垂足为F,若∠A=30º,OF=3,则AC= .11、从一副扑克牌中随机抽出一张牌,得到红桃的概率是 ; 12、为了测量一个圆形铁环的半径,某同学采用了如下办法(如图):将铁环平放在水平桌面上,用一个锐角为30°的三角板和一个刻度尺,按如图所示的方法得到相关数据,进而可求得铁环的半径,若测得PA=5cm ,则铁环的半径是 cm.第十题图 第十二题图 第十七题图 二、单项选择题(每题3分,共24分)13、ABC Rt ∆中,如果各边长度都扩大2倍,则锐角A 的各个三角函数值 ( ) (A )不变化; (B )扩大2倍; (C )缩小一半; (D )不能确定14、在△ABC 中,A ,B 为锐角,且有 B A cos sin =,则这个三角形是 ( ) (A )等腰三角形 (B )直角三角形 (C )钝角三角形 (D )锐角三角形 15、下列各式中,y 是x 的二次函数的是 ( )(A )21xy x +=; (B )220x y +-=; (C )22y ax -=-; (D )2210x y -+= 16、抛物线()1222++=x y 的顶点坐标是 ( )A .(2,1)B .(-2,1)C .(2,-1)D .(-2,-1)17、右图是小明制作的一个圆锥形纸帽的示意图.围成这个纸帽的纸的面积为( )cm 2(A )200π (B )150π (C )300π (D )250π18、设⊙O 的半径为3,点O 到直线l 的距离为d ,若直线l 与⊙O 至少有一个公共点点,则d 应满足的条件是 ( )(A ) 3=d ; (B ) 3≤d ; (C ) 3<d ; (D ) 3>d19、两道单选题都含有A ,B ,C ,D 四个选项,瞎猜这两道题,恰好全都猜对的概率是( ) (A )21 (B )41 (C )81 (D )16120、已知反比例函数xky =的图象如右图所示,则二次函数222k x kx y +-=的图象大致为 ( )三、解答题(共60分)21、计算 (每小题5分,共10分) (1)︒+︒60cos 60sin 22 + 1;(2)︒∙︒+︒∙+︒∙︒60tan 60sin 45cos 245tan 30sin ;22、(7分)已知二次函数y=x 2-4x+3的图象与X 轴交于A 、B 两点,与Y 轴交于C 点, 求△ABC 的面积.A .FADCB OPA23、(7分)瞭望台AB 高20m ,从瞭望台底部B 测得对面塔顶C 的仰角为60°,从瞭望台顶部A 测得塔顶C 的仰角为45°,已知瞭望台与塔CD 地势高低相同.求塔高CD .24、(7分)如图,D 为⊙O 的直径AB 的延长线上一点,PD 是⊙O 的切线,∠D=30º. 求证:PA=PD.A25、(7分)小英和小丽用两个转盘做“配紫色”游戏,配成紫色小英得1分,否则小丽得1 分,这个游戏对双方公平吗?为什么?(红色+蓝色=紫色,配成紫色者胜)26、(7分)如图,在矩形ABCD 中,AB=1cm ,BC=2cm 以点B 为圆心,BC 为半径画弧交AD 于点F ,交BA 的延长线于点E ,求图中阴影的面积。

山东省临沂市九年级上学期期末数学试卷

山东省临沂市九年级上学期期末数学试卷

山东省临沂市九年级上学期期末数学试卷姓名:________ 班级:________ 成绩:________一、选择题 (共10题;共20分)1. (2分)所示图形中,既是轴对称图形又是中心对称图形的是()A .B .C .D .2. (2分) (2018九上·前郭期末) 利用配方法解方程2x2﹣ x﹣2=0时,应先将其变形为()A .B .C .D .3. (2分)下列事件发生的概率为0的是()A . 随意掷一枚均匀的硬币两次,至少有一次反面朝上B . 今年冬天黑龙江会下雪C . 随意掷两个均匀的骰子,朝上面的点数之和为1D . 一个转盘被分成6个扇形,按红、白、白、红、红、白排列,转动转盘,指针停在红色区域4. (2分)如图⊙O是Rt△ABC的内切圆,D,E,F分别为切点,∠ACB=90°,则∠EDF的度数为()A . 25°B . 30°C . 45°D . 60°5. (2分)二次函数y=-(x-1)2+3的图象的顶点坐标是()A . (-1,3)B . (1,3)C . (-1,-3)D . (1,-3)6. (2分) (2015九上·龙华期中) 某公司2012年缴税70万元,2014年缴税90万元,求该公司这两年缴税的年平均增长率.若设该公司这两年缴税的年平均增长率为x,根据题意,可得方程()A . 70x2=90B . 70(1+x)2=90C . 70(1+x)=90D . 70+70(1+x)+70(1+x)2=907. (2分) (2016九上·北京期中) 如图,⊙O的半径为5,AB为弦,OC⊥AB,垂足为C,若OC=3,则弦AB 的长为()A . 8B . 6C . 4D . 108. (2分)如图,已知是坐标原点,与是以点为位似中心的位似图形,且与的相似比为,如果内部一点的坐标为,则在中的对应点的坐标为()A . (-x, -y)B . (-2x, -2y)C . (-2x, 2y)D . (2x, -2y)9. (2分)(2018·东营) 如图所示,已知△ABC中,BC=12,BC边上的高h=6,D为BC上一点,EF∥BC,交AB于点E,交AC于点F,设点E到边BC的距离为x.则△DEF的面积y关于x的函数图象大致为()A .B .C .D .10. (2分)将矩形纸片ABCD按如图的方式折叠,得到菱形AECF,若AB=3,则BC的长为()A . 1B . 2C .D .二、填空题 (共8题;共9分)11. (1分)甲、乙两个同学分解因式x2+ax+b时,甲看错了b,分解结果为(x+2)(x+4);乙看错了a,分解结果为(x+1)(x+9),则a+b= ________12. (1分)将x=代入反比例函数y=﹣中,所得函数值记为y1 ,又将x=y1+1代入原反比例函数中,所得函数值记为y2 ,再将x=y2+1代入原反比例函数中,所得函数值记为y3 ,…,如此继续下去,则y2015=________13. (2分)(2011·宁波) 实数27的立方根是________.如果点P(4,﹣5)和点Q(a,b)关于原点对称,则a的值为________.14. (1分) (2015九上·重庆期末) 从﹣3,﹣1,0,1,3这五个数中随机抽取一个数记为a,再从剩下的四个数中任意抽取一个数记为b,恰好使关于x,y的二元一次方程组有整数解,且点(a,b)落在双曲线上的概率是________.15. (1分)已知圆锥的底面半径为4cm,高为3cm,则这个圆锥的侧面积为________ cm2 .16. (1分)2013年5月26日,中国羽毛球队蝉联苏迪曼杯团体赛冠军,成就了首个五连冠霸业.比赛中羽毛球的某次运动路线可以看作是一条抛物线(如图),若不考虑外力因素,羽毛球行进高度y(米)与水平距离x(米)之间满足关系y=- x2+ x+,则羽毛球飞出的水平距离为________米.17. (1分)有一组等式:12+22+22=32 , 22+32+62=72 , 32+42+122=132 ,42+52+202=212…请观察它们的构成规律,用你发现的规律写出第8个等式为________18. (1分)已知圆心角为150°的扇形面积是15πcm2 ,则此扇形的半径为________ .三、解答题 (共6题;共66分)19. (10分)解方程:(1)(x﹣5)2=16(2) 4x2﹣3=12x(用公式法)20. (15分) (2019八下·杭州期末) 在直角坐标系中,反比例函数,过点 .(1)求关于的函数表达式.(2)求当时,自变量的取值范围.(3)在轴上有一点,在反比例函数图象上有一个动点,以为一边作一个正方形,当正方形有两个顶点在坐标轴上时,画出状态图并求出相应点坐标.21. (10分)(2018·温州模拟) 某校活动课要求每位同学在乒乓球、篮球、排球、羽毛球4类体育项目中任选一项参加.为了解同学对这4类体育项目的报名情况,学校对本校50名学生进行抽样调查,并绘制统计图.请根据统计图回答下列问题:(1)已知全校共有500名学生,估计报名参加乒乓球项目的学生有多少人.(2)甲、乙、丙三人的乒乓球水平相当,学校决定从这三名同学中任选两名参加市乒乓球比赛,请用画树状图或列表法求甲被选中的概率.22. (10分)(2016·资阳) 如图,在⊙O中,点C是直径AB延长线上一点,过点C作⊙O的切线,切点为D,连结BD.(1)求证:∠A=∠BDC;(2)若CM平分∠ACD,且分别交AD、BD于点M、N,当DM=1时,求MN的长.23. (10分)已知,若函数y=(m-1) +3是关于x的一次函数(1)求m的值,并写出解析式.(2)判断点(1,2)是否在此函数图象上,说明理由.24. (11分) (2017九上·亳州期末) 如图,抛物线y=ax2+bx+c(a>0)的顶点为M,直线y=m与x轴平行,且与抛物线交于点A,B,若△AMB为等腰直角三角形,我们把抛物线上A,B两点之间的部分与线段AB围成的图形称为该抛物线对应的准碟形,线段AB称为碟宽,顶点M称为碟顶,点M到线段AB的剧烈为碟高.(1)抛物线y=x2对应的碟宽为________;抛物线y= x2对应的碟宽为________;抛物线y=ax2(a>0)对应的碟宽为________;抛物线y=a(x﹣3)2+2(a>0)对应的碟宽为________;(2)利用图(1)中的结论:抛物线y=ax2﹣4ax﹣(a>0)对应的碟宽为6,求抛物线的解析式.(3)将抛物线yn=anx2+bnx+cn(an>0)的对应准蝶形记为Fn(n=1,2,3,…),定义F1,F2,…..Fn为相似准蝶形,相应的碟宽之比即为相似比.若Fn与Fn﹣1的相似比为,且Fn的碟顶是Fn﹣1的碟宽的中点,现在将(2)中求得的抛物线记为y1,其对应的准蝶形记为F1.①求抛物线y2的表达式;②若F1的碟高为h1,F2的碟高为h2,…Fn的碟高为hn.则hn=________,Fn的碟宽右端点横坐标为________.参考答案一、选择题 (共10题;共20分)1-1、2-1、3-1、4-1、5-1、6-1、7-1、8-1、9-1、10-1、二、填空题 (共8题;共9分)11-1、12-1、13-1、14-1、15-1、16-1、17-1、18-1、三、解答题 (共6题;共66分)19-1、19-2、20-1、20-2、21-1、21-2、22-1、22-2、23-1、23-2、24-1、24-2、24-3、第11 页共11 页。

2010-2011学年度临沂费县第一学期八年级期末考试

2010-2011学年度临沂费县第一学期八年级期末考试英语试卷第Ⅰ卷(选择题共55分)二、单项填空(共15小题,计l5分)选择最佳答案。

21.Tom wants to be______ engineer when he_______ up.A.an;grows B.an;will grow C.a:is growing D.the;grow 22.______ should get the job, Ruth or Rose?A.Who do you think B.Do you think whoC.Do you think whom D.Whom do you think23.You need three bananas and ______A.cut up them B.cut up it C.cut them up D.cut it up 24.When to go there depends ______ the weather.A.in B.on C.with D.of25.She ______ her homework because she was ill.A.didn't B.didn't do C.does D.doesn't do 26.She ______out with her friends last Saturday night.A.hang B.hung C.hanged D.hanging 27.He was the first Chinese pianist in the _______ history of the competition to win this prize.A.70 years B.70 year C.70-year D.70-years 28.There _______ a talk about science in our school next week.A.be B.haveC.is going to be D.is going to have29.—_______ is he going to do that? —By practicing.A.What B.Where C.Which D.How30._______ his home is the farthest from the school, he is the first one to get to school every day.A.Because B.As C.Although D.If 31.Could you please ___________ the window? I feel a little cold.A.not to open B.not open C.not to close D.not close 32.Don't forget ___________the door when you left!A.close B.to close C.closing D.closes 33.Of all the performers, I think he is the ___________ one.A.success B.most successful C.more successful D.successful 34.It was sunny yesterday. But it's rainy and much ___________ today.A.cold B.coldest C.more colder D.colder 35.—____________? —Yes, sure.A.Could you please help me? B.What are you going to do?C.How are you? D.Why are you late?四、阅读理解(一)根据下列短文内容,选择最佳答案。

峡江县2010~2011学年度第一学期九年级数学期末考试

峡江县2010~2011学年度第一学期九年级期末考试数 学 试 卷(总分:120分 考试时间:120分钟)一、(本大题共8小题,每小题只有一个正确答案,将你认为正确的答案的代号填入题后括号内,每小题3分,共24分)1.使式子 在实数范围内有意义的x 的取值范围是( )A 、x ≥2B 、x <2C 、x ≤2D 、x >22.如图,将图中的Rt △ABC 向右翻滚,下列说法:(1)①→②是旋转;(2)①→③是平移;(3)①→④是平移; (4)②→③是旋转。

其中正确的有( ) A 、1种 B 、2种C 、3种D 、4种3.下列各图是选自历届亚运会会徽中的图案,其中是中心对称图形的是( )A B C D 4.用配方法解一元二次方程2x 2+4x+1=0,配方后的方程是( )A 、(2x+2)2=2 B 、(2x+2)2=-3 C 、(2x+ )2=D 、(x+1)2=5.已知关于x 的一元二次方程x 2-( R+r)x+ 41d 2=0没有实数根,其中R 、r 分别为⊙O 1、⊙O 2的半径,d 为此两圆的圆心距,则⊙O 1、⊙O 2的位置关系是( )A 、外离B 、相切C 、相交D 、内含6.如图,⊙O 的半径为2,C 是 的中点, 且∠CDE=30°,则弦EF 的长为( ) A 、23 B 、22 C 、3D 、27.在△ABC 中,∠C=90°,AC=3cm ,BC=55cm ,将△ABC 以BC 为轴旋转一周,得到一个圆锥体, 则此圆锥体的表面积为( )A 、57πcm 2B 、57cm 2C 、33πcm 2D 、33cm 28.已知关于x 的一元二次方程ax 2+bx+c=0。

下列命题:①若a+b+c=0,则此方程必有一根x=1;②若b >a+c ,则此方程有两个不相等的实数根;③若b=2a+3c ,则此方程有两个不相等的实数根.其中,属于真命题的是( ) A 、①和② B 、①和③ C 、②和③ D 、①②③二、.(本大题共8小题,每小题3分,共24分)9. 方程(x -1)2=4的解为10.在下面A 、B 两题中任选一题完成填空,若两题都做按A 题计分 A. 计算:31×300=B. 用计算器计算:31×30≈ (保留三个有效数字) . (第14题图) 11.一次篮球比赛,赛制为单循环式(每两队之间都赛一场),共比赛28场,设有 x 个球队参加比赛,则根据题意列出的方程是 12.已知三角形的边长分别为10,22,32,则这个三角形的面积是 13.从数2,-2,2,8 四个数中任取两个数,其积为有理数的概率是 14.如图所示,半圆AB 平移到半圆CD 的位置时所扫过的面积为_____________ 15.如图,在平面直角坐标系中,点P 在第一象限, ⊙P 与x 轴相切于点Q ,与y 轴交于M (0,2)、 N (0,8)两点,则点P 的坐标是 16.如图,把一个直角三角尺绕着60°的顶点B 沿逆时针方向旋转,使直角顶点C 与AB 的延长线上的点D 重合, 给出以下结论: ①∠CBE=60°;②BE=CD ; ③△ACD 是等腰三 角形;④CD ⊥BE ;⑤A 、C 、E 可 能不共线,其中正确结论的序号是 (多填或错填得0分,少填酌情给分)三、(本大题共3小题, 共20分) 17.(6分)化简:24-| 1- 3|- 3(1+22)密 封 线 内 不 要 答 题学校班级姓名 考号 118.(7分)小明参观上海世博会,由于仅有一天的时间,他上午从A —中国馆、B —日本馆,C —美国馆中任意选择一处参观,下午从D —韩国馆、E —英国馆、F —德国馆中任意选择一处参观.(1)请用画树状图或列表的方法,分析并写出小明所有可能的参观方式(用 字母表示即可).(2)求小明上午和下午恰好都参观亚洲国家展馆的概率.19.(7分)关于x 的方程kx 2+(k+2)x+4k= 0有两个不相等的实数根. (1)求k 的取值范围.(2)是否存在实数k ,使得方程的两实数根的倒数和为0.若存在,求出k 的值,若不荐在说明理由.三、(本大题共3小题, 共24分)20.(8分)如图:AB 、CD 是⊙O 的弦,点M 、N 分别是AB 、CD 中点,请你添加一组相等的角作为条件,使得AB=CD ,并证明:21.(8分)如图是一块直角三角形纸板余料,张师傅想从中截取一个面积最大的圆,用来做一个圆柱形笔简的底面.(1)请你用直尺和圆规在图中帮张师傅画出这个圆(保留作图痕迹,不必说明理由); (2)若张师傅测量出AC=9cm ,BC=12cm ,请求出(1)中所画圆的半径.22.(8分)如图:⊙D 交y 轴于A 、B 两点,交x 轴于点C ,已知点D 坐标为(0,1),过点C 的直线y=-22x -8与y 轴交于点P . (1)试判断直线PC 与⊙D 的位置关系.(2)若⊙D 以2单位长度/秒的速度沿y 轴向下方运动,请你通过计算几秒钟 后,⊙D 又一次与直线CP 相切,并求出此时切点坐标.五、(本大题共3小题,共28分)23.(9分)某电厂规定,该厂家属区的每户居民如果一个月的用电量不超过x千瓦时,那么这个月这户居民只交10元用电费;如果超过x千瓦时,这个月除了要交10元用电费外,超过部分按每千瓦时0.01x 元交费.(1)该厂某户居民1月份用电90千瓦时,超过了x 千瓦时的规定,试写出超过部分应交的电费(元)(用含x的代数式表示).(2)下表是这户居民2月、3月的用电情况,请根据其中的数据,回答电厂规x度是多少?24.(9分)如图,同一坐标系中有6个点:A(1,1)、B(-3,-1)、C(-3,1)、D(-2,-2)、E(-2,-3)、F(0,-4).(1)画出△ABC的外接圆⊙P,并指出点D与⊙P的位置关系.(2)若将直线EF沿y轴向上平移,当它经过点D时,设此时的直线为l1.①判断直线l1与⊙P的位置关系,并说明理由.②再将直线l1绕点D沿顺时针方向旋转,当它经过点C 时,设此时的直线为l2,求直线l2与⊙P上的所围成的图形的面积.25.(10分)如图,⊙M与x轴交于A、B两点,与y轴相切于点C、D是的中点,且OA、OB的长是方程x2-4x+3=0的两根,已知P是⊙M上一个动点(不包括A、B两点).(1)求点M的坐标;(2)求∠APB的度数;(3)当∠PAD等于多少度时,四边形PADB是梯形?说明你的理由.参考答案一、 1、C 2、C 3、B 4、D 5、A 6、A 7、C 8、B二、 9、3,-1 10、A.10, B .1.83 11、60.05%(1+x)2= 63% 12、25 13、3114、6 15、(4,5) 16、①③④(多填或错填得0分,填对一个得1分) 三、 17.-23 18.(1)略(2)9219. 四、20.略21(1)略(2)322.五、23.解:(1)100)90(x x -元(2)5024.(1)点D 在⊙p 上(2)①略 ②2545-∏ 25.解:(1)(2,3)…2分(2)30°,150° …6分 (3)30°,150°……10分。

2011-2012学年度第一学期九年级期末考试

1 2011-2012学年度第一学期九年级期末考试数学试题 一、选择题:(每小题3分,共30分) 姓名: 1.下列各等式成立的是 A.4)4(2 B.3)3(2 C.xx2 D.24 2.方程(x一1)(x一2)=1的根是 A.2,121xx B.2,121xx C.3,021xx D.以上不对 3.已知矩形ABCD的对称中心恰为原点O,且点A的坐标为(2,一3),则C点的坐标为 A.(一2,3) B.(一2,一3) C.(2,3) D.(一3,2) 4.下列判断错误的是 A.相等的圆周角所对的弧相等 B.相等的弦所对的圆周角相等 C.长度相等的两条弧是等弧 D.经过圆心的弦也是圆的直径 5.已知一个圆锥的侧面展开图是一个半径为9,圆心角为120°的扇形,则该圆锥底面圆的半径等于 A.3 B.9 C.10 D.27 6.已知圆锥的底面半径为1cm,母线长为3cm,则其全面积为

A.2cm B.23cm C.24cm D.27cm 7.随机掷一枚均匀的硬币两次,落地后至少有一次正面朝上的概率是

A.21 B.41 C.32 D.43 8.已知二次函数的图象如图所示,下列结论正确的是 A.b>0,c>0 B.b>0,c<0 C.b<0,c>0 D.b<0,c<0 9.二次函数y=2x2-mx+5,当x一2时,y随x的增大而增大,则m的值为 A.一4 B.一8 C.8 D.无法计算 10.如图,已知DE//BC,CD和BE相交于点O,S△DOE:S△COB=4:9,则AE:EC为 A.2:3 B.2:1 C.4:9 D.5:4

二、填空题:(每小题3分,共30分)将正确答案直接填在题中横线上。 11.两个最简二次根式aa与dc相加得65,则a+b+c=________. 12.已知关于x的一元二次方程(a一2)x2+3x+a2-3a+2=0有一个根为0,则a的值为______ 13.如图,AB是半圆O的直径,D是弧AC的中点,∠B=50°。则∠A等于_______度. 2

2010~2011学年第一学期南昌市期末终结性测九年级数学(附答案)

第6题图B2010~2011学年第一学期南昌市期末终结性测九年级(初三)数学说明:考试可以使用计算器一、选择题(本大题共8个小题,每小题3分,共24分)在每小题给出的四个选项中,只有一项是正确的,请将正确答案前的字母填入题后的括号内1、计算8 - 2 的结果是( ) A 、 6 B 、 2 C 、6 D 、22、某校九年级进行迎春大合唱比赛,用抽签的方式确定出场顺序。

签筒中有9根形状、大小完全相同的纸签,上面分别标有出场的序号1、2、3、……9。

下列事件中是必然事件的是( )A 、一班抽到的序号小于6B 、一班抽到的序号为0C 、一班抽到的序号大于0D 、一班抽到的序号为73、关于x 的一元二次方程......kx 2+2x-1=0的两个不等的实数根,则k 的取值范围是( ) A 、k >-1 B 、k >1 C 、k ≠0 D 、k >-1且k ≠04、小明把乳头所示的扑克牌放在一张桌子上,请一位同学避开他任意将其中一张牌到过来,然后小明很快辨认出被到过来的哪张扑克牌是( )A 、方块5B 、梅花6C 、红桃7D 、黑桃85、如图,已知⊙O 是以数轴的原点为圆心,半径为1的圆,∠AOB=45°,点P 在数轴上运动,若过点P 且与OA 平行的直线于⊙O 有公共点,设P (x ,0),则x 的取值范围是( ) A 、-1≤x <0或0<x ≤1 B 、0<x ≤ 2 C 、- 2 ≤x <0或0<x ≤ 2 D 、x > 26、如图,∠ACB=60°,半径为2的⊙O 切BC 于点C ,若将⊙O 在CB 上向右滚动,则当滚动到⊙O 与CA 也相切时,圆心O 移动的水平距离为( )A 、2πB 、4πC 、4D 、2 37、为了让江西的山更绿、水更清,2009年省委、省政府计划到2011年实现全省森林覆盖率达到63%,已知2009年我省森林覆盖率为60.05%,设从2009年起每年的森林覆盖率提高x ,则可列方程( )A 、60.05(1+x)2=63%B 、60.05(1-x)2=63%C 、60.05(1+x)2=63D 、60.05(1-x)2=63 8、在一个口袋中有3个完全相同的小球,把它们分别标号为1,2,3,随机地摸取一个小球后返回,再随机地摸取出一个小球,则两次取的小球的标号相同的概率为( ) A 、13 B 、16 C 、12 D 、19第16题图第15题图第14题图二、填空题(本大题共8个小题,每小题3分,共24分) 9、一元二次方程2x 2=3x 的根是 .10、若y=x-3 +3-x +4,则x+y= .11、如图a 是一元二次方程x 2-3x+m+2=0的一个根,-a 是一元二次方程x 2+3x-m=0的一个根,则m 的值是 .12、若x 1和x 2是关于x 的方程x 2-(a-1)x-14 b 2+b-1=0的两个相等的实数根,则x 1=x 2= .13、若圆锥的母线长为3cm ,底面半径为2cm ,则圆锥的侧面积为 .14、请在图中画出线段AB 以O 为旋转中心逆时针分别旋转90°,180°,270°时对应的图形.15、一个边长为4cm 的等边三角形ABC 与⊙O 等高,如图放置,⊙O 与BC 相切于点C,⊙O 与AC 相交与点E,则CE 的长为 cm.16、如图,正三角形AMN 与正五边形ABCDE 内接于⊙O ,则∠BOM 的度数是 . 三、解答题(共3小题,每小题8分,共24分) 17、①计算:2 2 (348 -418-337②解方程2x 2+2x-5=018、在一个不透明的口袋中有四个手感完全一致的小球,四个小球上分别标有数字-4,-1,2,5 (1)从口袋中随机摸出一个小球,其上标明的数是奇数的概率是多少? (2)从口袋中随机摸出一个小球不放回,再从中摸出第二个小球①请用表格或树状图表示先后摸出的两个小球所标数字组成的可能结果?②求依次摸出的两个小球所标数字为横坐标,纵坐标的点位于第四象限的概率有多大?第20题图第21题图A C19、某农村中学为了提高教师的电脑操作水平,准备安排若干名教师去学习培训,负责技术培训单位收费标准是:①如果人数不超过25个,人均费用为500元;②如果人数超过25人,每增加1人,人均培训费降低10元,但人均培训费不得低于400元(1)由于该校可派人数有限,人均培训费总高于400元,但又想人均培训费低于500元,那么该校所派人数应在什么范围内?(2)已知学校已付培训费13500元,问该校安排了多少名教师去参加培训?四、解答题(共2小题,每小题8分,共16分)20、如图,点C 在y 轴的正半轴上,四边形OABC 为平行四边形,OA=2,∠AOC=60°,以OA 为直径的⊙P 经过点C,交BC 于点D ,DE ⊥AB 于E (1)求点A 和点B 的坐标 (2)求证:DE 是⊙P 的切线21、如图,⊙O 的半径为4mc ,AB 是⊙O 的直径,BC 切⊙O 于点B ,且BC=4,当点P 在⊙O 上运动时,是否存在点P ,使得△PBC 是等腰三角形,若存在,有几个符合条件的点P ,并分别求出点P 到线段BC 的距离;第22题图1EAABBEAB五、课题学习题(12分)22、如图1,点C 位线段BG 上一点,分别以BC 、CG 为边向外作正方形BCDA 和正方形CGEF ,使点D 落在线段FC 上,连结AE,点M 位AE 中点 (1)求证:MD=MF ,MD ⊥MF(2)如图2,将正方形CGEF 绕点C 顺时针旋转45°,其他条件不变,探究:线段MD 、MF 的关系,并加以证明;(3)如图3,将正方形AGEF 绕点C 旋转任意角度后,其他条件不同,探究:线段MD 、MF 的关系,并加以证明。

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2010-2011学年度临沂费县第一学期九年级期末考试
数学试题
时间:90分钟 满分:120分
一、选择题(本题共l0小题,每小题3分,共30分)
1.下列二次根式,属于最简二次根式的是

A.8 B.yx2 C.31 D.22yx
2.下列各式正确的是
A.5323222 B.32)53(3523

C.94)9()4( D.212214
3.在平面直角坐标系中,点P(2,一3)关于原点对称的点的坐标是
A.(2,3) B.(一2,3) C.(一2,一3) D.(一3,2)
4.如图,在⊙O中,A、P、B、C是⊙O上的四个点,已知∠APC=60°,∠CPB=50°则
∠ACB的度数为

A.100° B.80° C.70° D. 60°
5.下列事件中,必然发生的为
A.我县冬季比秋季的平均气温低 B.走到车站公共汽车正好开过来
C.打开电视机正转播奥运会实况 D.掷一枚均匀硬币正面一定朝上
6.小李掷一枚硬币,连续8次正面都朝上,请问他第9次掷硬币时,出现正面朝上的概率

A.0 B.1 C.21 D.81
7.如图所示的向日葵图案是用等分圆周画出的,则⊙O与半圆P的半径的比为
A.5:3 B.4:1 C.3:1 D.2:1
8.如图,若a<0,b>0,c<0,则抛物线y=cbxax2的图象大致为

9.如图:△ADE∽△ABC,若AD=1,BD=2,则△ADE与△ABC的相似比是
A.1:2 B.1:3 C.2:3 D.3:2
10.如图,实线部分是半径为9m的两条弧组成的游泳池,若每条弧所在圆都经过另一个圆
的圆心,则游泳池的周长为

A.12cm B.18cm C.20cm D.24cm
二、填空题(本题共10小题,每小题3分,共30分)

11.当x_______时,21xx在实数范围内有意义。
12.已知一元二次方程ax2+x—b=0的一根为l,则a-b的值是_______.
13.如图,△OAB绕点O逆时针旋转80°到△OCD的位置,已知∠AOB=45°,则∠AOD等
于_______.
14.在如图所示的平面直角坐标系中,三个圆是同心圆,最大圆的半径为1,则图中阴影部
分的面积是_______。

15.如图,在△ABC中,DE∥BC,若AD=1,DE=2,BD=3,则BC=_______.
16.已知圆锥的底面半径为9cm,母线长为10cm,则圆锥的全面积是_______cm2.
17.将抛物线y=-31(x-5)2+3向左平移5个单位,再向上平移3个单位后得到的抛物线的
解析式为_______.
18.已知抛物线y=ax2+bx+c(a≠0)与x轴的两个交点的坐标分别是(一3,0),(2,0),
则方程ax2+bx+c=0(a≠0)的解是_______.
19.已知两圆的半径分别为3cm和2cm,圆心距为5cm,则两圆的位置关系是_______.

20.观察下列各式,然后填空。32213121;8331)4131(21;

15441)5141(31;那么)2111(1nnn
=_______.
三、解答题(本题共6小题,共60分)
21.(本小题满分8分))681(2)2124(
22.(本小题满分8分)在等腰三角形ABC中,三边分别为a、b、c,其中a=5,若关于x
的方程x2+(b+2)x+6一b=0有两个相等的实数根,求△ABC的周长。
23.(本小题满分10分)一只口袋中放着若干只红球和白球,这两种球除了颜色以外没有任
何其他区别,袋中的球已经搅匀,蒙上眼睛从口袋中取出一只球,取出红球的概率是41.
(1)取出白球的概率是多少?
(2)如果袋中的白球有l8只,那么袋中的红球有多少只?
24.(本小题满分10分)如图,路灯(P点)距地面8米,身高1.6米的小明从距路灯的底
部(O点)20米的A点,沿OA所在的直线行走14米到B点时,身影的长度是变长了还
是变短了?变长或变短了多少米?

25.(本小题满分l2分)小李想用篱笆围成一个周长为60米的矩形场地,矩形面积s(单位:
平方米)随矩形一边长x(单位:米)的变化而变化。
(1)求s与x之间的函数关系式,并写出自变量x的取值范围;
(2)当x是多少时,矩形场地面积s最大?最大面积是多少?
26.(本小题满分l2分)如图:AB是⊙O的直径,以OA为直径的⊙O1与⊙O的弦AC相
交于D,DE⊥OC,垂足为E。
(1)求证:AD=DC;
(2)求证:DE是⊙O1的切线;
(3)如果OE=EC,请判断四边形O1OED是什么四边形,并证明你的结论。

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