重庆八中中考试题
中考测试（八中）II.单项选择（20分）21.English is ________useful language and it is widely used in the word.A. aB. anC. theD. /22 . — Do you know the funny man Yue Yunpeng?— Yes. He was born _______April 15th,1985 and he first put on a performance at 25.A. inB. onC. duringD.at23 . — You don’t look well. What’s wrong?— I think I have a fever. I want to go to the_____________.A.schoolB. bookstoreC. hospitalD. Cinema24.Be careful with the knife. You may cut ____________.A.youB. yourC. yoursD. yourself25.Tom is a good boy. He helps his mom ____________housework every day.A. doB. doingC. doesD. did26 — I haven’t seen you for a long time.— Oh, I___________ to Chongqing three days ago.A. have returnedB. returnC. will returnD. returned27 — Have you ________ the TV show The Descendants of the Sun?— Yes, I watch it with my daughter every evening.A. heard fromB. heard ofC. put onD. put off28 — Bob, would you mind taking out the rubbish?— ____________, I’ll do it right away.A. Not at allB. All rightC. Sorry, I can’tD. Yes, please29. Sam worked out the problem in only three minutes. It’s not as ______ as he thought.A. easyB. easierC. hardD. harder30 _____________ she didn’t say anything to me, I was sure she had seen me.A. BecauseB. ThoughC. UnlessD. Until31 — Chongqing has developed a lot in the last few years.— Yes. And a new amusement park ___________ here in 2017.A. is builtB. buildsC. will buildD. will be built32 — Can I speak to Mr. Brown?— ___________. He’s in the kitchen and I’ll call him right away.A. Hold on, pleaseB. I’m afraid notC. I hope soD. I’m sorry33 ______________lovely girl she is! We all love her.A. What aB. WhatC. How aD. How34 Driving was so difficult for me that I ________ knew where to put my feet the first time I gotinto the car.A. usuallyB. alwaysC. everD. hardly35 — Do you have any idea __________ ?— Yes, on the second floor.A. where is the movieB. where the movie theater isC. when is movie B. when the movie is36 ____________ her dream come true, Alice studies harder than any of her classmates.A. MakingB. To makeC. MakeD. Made37 — Must I look up each new word while reading?— No, you __________. You should try to guess its meaning.A. can’tB. mustn’tC. needn’tD. may not38 — Do you and your sister like comedies, Linda?— Yes. _________ of us think they are interesting.A. BothB. AllC. NeitherD. Either39 — ____________ do you have exams at your school?— Once a month.A. How oftenB. How longC. How soonD. How many40 — It’s raining hard outside. Could I use your umbrella, Linda?— Sorry. I ______ it at home this morning.A. forgetB. leftC. leaveD. forgotⅢ. 完形填空（每小题1.5分，共15分）In modern society we can see competitions(竞争) everywhere, both in our work and in our life. Team spirit(团队精神) is so important and helpful. It can lead us to 41 in the competitions.Team spirit means that people work together and help 42 as part of a team. With this spirit, people try hard to make their team the 43 of all.Everyone has experienced(经历) team spirit one way or another, whether they were part of a team or saw a group of people 44 for their favorite player.There are different kinds of team spirit. One kind is between a team of people whose efforts and teamwork are needed in reaching 45 goal. Another kind is when a group of people support a person, a team or even their country.Team spirit brings good effects. It helps to builds up 46 and trust(信任) between people who may not get on well when they don’t have such team spirit 47 , team spirit may also cause bad effects. For example, too great team spirit may cause fights or arguments with other team members.Some people don’t understand team spirit 48 . They think team spirit means having to become a member of a team or a fan club. In fact, team spirit can be built anywhere—between friends, workmates or even between, two people who have never 49 before. You don’t have to wear the same team spirit clothes. Anyone can show team spirit just 50 showing support for the same goal.( )41. A.dream B.surprise C.success D.end( )42. A.each other B.other C.another D.the other ( )43. A.fastest B.earliest C.biggest D.best( )44. A.call B.cheer C. to cheer D.to call ( )45. A.their B.his C.my D.our( )46. A.luck B.friendship C.health D.help( )47. A.But B.Although C.However D.So( )48. A.easily B.quickly C.simply D.properly ( )49. A.written B.heard C.met D.seen( )50. A.by B.through C.in D.withIV 阅读理解（每小题2分，共30分）AAre you a fan of traveling? Well, soon there will be a new place for you to take your vacation—the moon. Last month, the European Space Agency (ESA) said they would build an international moon base—the Moon Village. The purpose of building the village is to open the door for deeper space research. And it will also be a tourist center. According to the head of the ESA, Johann-Dietrich Woemer, it will only take about 20 years to finish it.However ,there are still some challenges, and the biggest one is how to get the building material into space without costing too much. Scientists suggest using the ice water and other things on the moon to print 3-D building materials, so people don’t have to carry everything from the earth.The ESA chose to build the base on the moon instead of the Mars because the moon is about 144 times closer than the Mars.The ESA has invited the US,Russia,China,India,Japan and some other countries to join in the moon plan.It hopes that in the future the moon will become a place where all the countries of the world can work together.51.The ESA will build an international base on__________.A.the moonB.the earthC.the MarsD.the sun52.The ESA plan to build the village__________.A.to open the door for deeper space researchB.to make all the countries work togetherC.to make money by building it as a tourist centerD.to get a new place to live in53.The biggest problem in building the base is ________.A.how to use 3-D printersB.where to build itC.how to get enough moneyD.how to get the building materials into space withoutcosting too muchBStudents from different schools are talking about strange rules in their schools.Zhao Jiacheng,13,from Xi’an: Students are not allowed to bring any balls to school. Our teachers think they will distract(使...分心) us from our studies. As a result, half of the students don’t have balls to play with during the PE class. Many people are disappointed about it. Another strange rule is that girls must have short hair.They think it will make them look unified (统一的).What a strange rule !Cui Anqi,15,from Guangdong: At my school,there is a strange rule for Class 5,Junior 2.Boys and girls must stay at least one meter away from one another.The teacher in their class says that this rule will help build pure friendships between boys and girls.Students don’t like it at all.I don’t think it’s reasonable. I’m sure that there are pure friendships between boys and girls.The rule is unnecessary.Wang Ying, 13, from Shanghai: At my school,we aren’t allowed to bring snacks and drinks into teaching buildings.I once bought a fried drumstick( 鸡腿) and a drink during break time.But I didn’t eat them by the time the break was over.So I put them alongside a garden. However,when I went to find them after class,there many ants on them.I don’t like the rule.Zhang Xueling,15,from Jiangsu: This term,we got vending machines(自动贩卖机) around our teaching buildings and dormitories. We were all excited and couldn’t wait to buy snacks from them.However,our school doesn’t let us use them.And they don’t give us a reason.We don’tunderstand why.Xiao Li,16,from Beijing: Many girls like to use colorful hair ties.But our school doesn’t allow it. Girls can only use black hair ties.At the beginning,our teachers checked it every day. My classmates and I followed it.But as time went by,no one followed it anymore.54. How many students talk about strange rules in their schools?A. 5B. 4C. 3D. 255. Why aren’t students allowed to take any balls to school?A. Because it will make them look unified.B. Because the teachers think balls are bad for the students.C. Because the teachers think balls will distract the students from their studies.D. Because balls are too expensive.56. The underlined word pure in Paragraph 3 may mean ___________.A. 可爱的B. 有价值的C. 短暂的D.纯洁的57. Students aren’t allowed to _________ at Wang Ying’s school.A.have short hairB.bring snacks and drinks into teaching buildingse colorful hair tiesD.buy snacks from the vending machineCWhat can help parents understand their kids better? More than 8,000 US kids answered this question in an online survey by Time for Kids and Kids Health Org.Many US kids—two out of three—said they get along with their parents.But that doesn’t mean they never disagree. In fact, most kids reported arguing with their parents, at least sometimes.And two out five kids said arguments sometimes even includes shouting at each other.It’s certainly normal to disagree and argue,” says Lyness,an American child psychologist(心里学家). “But it’s also important to learn how to do so respectfully. Be patient. Don’t use a raised, angry voice.”And not surprisingly, three out of four kids said they had lied to their parents some times.Many said they lie so they would not get in trouble or make their parents disappointed. According to Lyness, lying isn’t just wrong. It can actually have had results. Telling the truth builds trust. Telling the truth,says Lyness,shows maturity(成熟).But older kids actually lie more often than younger ones. Kids aged 12 to 14 not only said they lie more,but they also reported having less fun,feeling less close and not getting along as well with their parents.According to Lyness, those feelings are quite common. As kids become more independent,they have more areas of disagreement with their parents.But it doesn’t have to be that way. “Kids and parents get along differently at each stage of the journey,” she says. “As kids grow and change,it is important for everybody to change.”58．________of the US kids get along with their parents.A.One out of twoB.Two out of threeC.Two out of fiveD.Three out of five59.Which of the following sentences is true according to the passage?A.Two out of the three the US kids never disagree with their parents.B.Older kids lie to their parents less often than younger ones.C.Lying is wrong and it can cause bad results.D.Kids aged 12 to 14 have less fun but they feel closer to their parents60.As kids grow and change,________should change.A.only parentsB.only kidsC.both kids and parentsD.neither kids nor parents61.The child psychologist Lyness may agree that__________.A.it’s not normal to disagree and agrue between parents and kidsB.parents don’t need to be patient with their kidsC.kids can agrue with their parents in a raised angry voiceD.kids need to agrue with parents with respectDSome people can find the different color lump(色块)among 45,000 lumps.Others can remember 120 strangers and their fingerprints. There are also some people who can work out a seven-digit number(七位数)multiply(乘以) a 10-digit number in just a fehneseiw seconds.In a Chinese science TV show called Super Brain,you can be amazed by these people’s great brainpower. Brainpower actually means intelligence( 智力)which includes different abilities, such language, logic, memory and even imagination.Wang Yuheng is a painter from Beijing. He was born in 1981 and he has super observing( 观察)ability. In February, 2015 he took part in one of the competitions.There were 520 glasses of water on the stage. A judge chose one glass of water and give it to Wang to look at.Then the glass was put back where it was. He had to find this glass of water among 520 glasses of water. Unbelievably, he found it in just few minutes.You may ask how the competitors’ brains can be so strong and powerful. Are they born to be talents? Do you also want to have super brainpower? Here’s what we can do to improve our brainpower.ExerciseStudies have shown that exercise can improve the brain’s functions(功能), such as planning, organizing and multitasking. Exercise can also help you be in a good mood.Training your memoryHow often do you hear people say, “I wish I had a better memory ?” But no one does anything about this! If you train yourself to memorize phone numbers and other important numbers, you will see a change.Doing something newWhen you experience something new you actually stimulate( 刺激) your brain! This creates new neural pathways(神经通路) and increase your intelligence. You could take a new way to your school, try a new snack or even a new form of exercise!62. According to the passage, brainpower includes all the following abilities except__________.A.memorynguageB.imaginationmunication63. We can learn from the passages that _________.A.WangYuheng was 32 years old when he joined in the competitionB.Everyone believed that Wang Yuheng could easily find the classC.It was hard to find the glass because the judge put it in a new placeD. Wang Yuheng succeeded in finding the glass because of his super observing ability64.A.BC.study hard and remember more facts and informationD.watch the Chinese science TV show called Super Brain65.Which is the best title of this passage?A..Intelligence is important.B.Born talent.C.How to have super brainpower?D.How to be more talented?A: Tom,let’s go somewhere interesting to relax.B: 66 .A:Shall we go to the cinema? Some new films are on this week.B: 67 . Which film would you like to see?A: Let me search on the Internet. Er… How about Zootopia?B: Yeah, I have heard of it. It’s so interesting! 68_____A: UME Cinema is a little far. Let’s go to BONA Cinema.B: OK. Look! So many clouds in the sky! 69A: Yes. The weather report says it will be rainy tonight.B: 70A: I will. The film will begin in two hours. We can go there after dinner.B: Alright. Let’s meet at the gate of the cinema.A: OK. See you again.66.________ 67.________ 68.________ 69.________ 70.________VI 任务型阅读（每题2分，共8分）What do Australian teenagers do in their free time ? Many of them like to spend it with their friends.They play together outside or do some shopping. But a girl named Shanaya White spends her free time in a different way---she works hard to cheer upthose children with serious illness.Shanaya comes from Queenland. In September 2014, she spent four days in hospital because of an illness. She found it was really hard to stay in hospital. She felt upset when she thought many children had to stay in hospital for weeks and months because of illnesses. After learning more about childhood illness,she decided to help those children.She made a Facebook Page. On it, she posted stories of other children’s fights against illnesses, hoping more people would care about those children. “I name it Happy Little Smiles because I want to bring happiness and smiles to the kids in need,”saidShanaya. She also made “Happy Packs” and sent the packs to those children with illnesses. Inside the packs, there were toys , books and a mix of activities.It was a success and she made many sick children smile. And thanks to her,more and more people began to care about and help the children.71. What does Shanaya do in her free time?72. How did Shanaya feel when she thought many children had to stay in hospital because of illnesses?73. Did more children begin to care about the sick children?74. What do you think about the girl Shanaya?VII. 句型转换（每空1分，共10分）75. Lily often makes dinner for her family after school.（否定句）Lily _________often _________dinner for her family after school.76. I was washing the clothes at this time yesterday.________ ________ you doing at this time yesterday?77. Luckily, they got to the airport on time. 同义句Luckily, they _______ _______ the airport on time.78.他付款买下这些西红柿，然后匆匆回家了。
重庆八中考试题及答案
重庆八中考试题及答案一、选择题（每题3分，共30分）1. 下列哪个选项不是重庆的著名景点？A. 长江索道B. 洪崖洞C. 磁器口古镇D. 故宫博物院答案：D2. 重庆火锅中常见的食材不包括以下哪一项？A. 毛肚B. 鸭肠C. 豆皮D. 鲍鱼答案：D3. 重庆话中“巴适”是什么意思？A. 合适B. 不好C. 舒服D. 糟糕答案：C4. 重庆的市花是什么？A. 牡丹B. 玫瑰C. 杜鹃D. 荷花5. 重庆的简称是什么？A. 渝B. 川C. 蜀D. 黔答案：A6. 重庆的直辖市地位是在哪一年开始的？A. 1996年B. 1997年C. 1998年D. 1999年答案：B7. 重庆的地形特点是什么？A. 平原B. 高原C. 山地D. 盆地答案：C8. 重庆的轨道交通系统中，哪一条线路是环线？A. 1号线B. 2号线C. 3号线D. 环线答案：D9. 重庆的著名小吃“小面”通常不包含以下哪种调料？B. 花椒C. 芝麻酱D. 醋答案：C10. 重庆的著名地标“解放碑”位于哪个区？A. 渝中区B. 江北区C. 南岸区D. 沙坪坝区答案：A二、填空题（每题2分，共20分）1. 重庆的市树是______。
答案：黄葛树2. 重庆的气候类型属于______。
答案：亚热带湿润气候3. 重庆的著名景点“武隆天生三桥”位于______区。
答案：武隆区4. 重庆的长江三峡包括______、______和______。
答案：瞿塘峡、巫峡、西陵峡5. 重庆的著名历史人物______是抗日战争时期的著名将领。
答案：张自忠6. 重庆的著名特产“涪陵榨菜”产自______区。
答案：涪陵区7. 重庆的著名桥梁“东水门大桥”是一座______桥。
答案：斜拉桥8. 重庆的著名文化活动“重庆国际火锅节”通常在每年的______月举行。
答案：11月9. 重庆的著名景点“白公馆”位于______区。
答案：沙坪坝区10. 重庆的著名小吃“陈麻花”产自______区。
2024年重庆八中中考物理一模试卷及答案解析.
2024年重庆八中中考物理一模试卷一、选择题（本题共8个小题，每小题只有一个选项符合题意，每小题3分，共24分。
）1．（3分）下列估测值符合生活实际的是（）A．人感觉舒适的环境温度约为37℃B．普通中学生的质量约为500kgC．中学生正常步行的速度约为1m/s D．空调正常工作时电压约为36V2．（3分）如图所示，关于生活中的光现象，下列说法错误的是（）A．图甲中凿壁偷光是利用了光沿直线传播B．图乙中看见水中的鱼位置变浅是因为光的反射C．图丙中放大镜将字母放大是利用了光的折射D．图丁中洪崖洞夜景在水中的倒影是光的反射现象3．（3分）下列诗词中涉及到的物理知识说法正确的是（）A．停车坐爱枫林晚，霜叶红于二月花——霜的形成是凝华现象，需要放热B．雪消门外千山绿，花发江边二月晴——雪的形成是凝固现象，需要放热C．斜月沉沉藏海雾，碣石潇湘无限路——雾的形成是液化现象，需要吸热D．瀚海阑干百丈冰，愁云惨淡万里凝——冰的形成是熔化现象，需要吸热4．（3分）如图所示，下列生活中和物理有关的现象解释正确的是（）A．图甲中小朋友在下滑的过程中重力势能全部转化为动能B．图乙中拍打被子的过程中灰尘和被子分离是由于灰尘具有惯性C．图丙中所示轻轨站要设立安全线是因为靠近列车的空气流速大，压强大D．图丁中“小米su7生态汽车”对地面的压力和地面对它的支持力是一对平衡力5．（3分）如图所示的电和磁知识描述正确的是（）A．图甲中验电器是利用异种电荷相互吸引的原理制成的B．图乙中“司南之杓，投之于地，其柢指南”，“柢”指向地理的南极附近C．图丙中低功率用电器使用两孔插座而大功率用电器使用三孔插座供电D．图丁中通电导体在磁场中受力而运动是发电机的工作原理6．（3分）如图所示为智能镜子，当人靠近镜子，开关S1自动闭合，摄像头工作。
图像识别系统被唤醒后S2自动闭合，智能模块启动，开始分析用户脸上的信息，并在镜面的显示屏上提供合适的护肤建议。
2024届重庆市八中中考数学最后一模试卷含解析
2024届重庆市八中中考数学最后一模试卷注意事项：1．答卷前，考生务必将自己的姓名、准考证号、考场号和座位号填写在试题卷和答题卡上。
用2B 铅笔将试卷类型（B ）填涂在答题卡相应位置上。
将条形码粘贴在答题卡右上角"条形码粘贴处"。
2．作答选择题时，选出每小题答案后，用2B 铅笔把答题卡上对应题目选项的答案信息点涂黑；如需改动，用橡皮擦干净后，再选涂其他答案。
答案不能答在试题卷上。
3．非选择题必须用黑色字迹的钢笔或签字笔作答，答案必须写在答题卡各题目指定区域内相应位置上；如需改动，先划掉原来的答案，然后再写上新答案；不准使用铅笔和涂改液。
不按以上要求作答无效。
4．考生必须保证答题卡的整洁。
考试结束后，请将本试卷和答题卡一并交回。
一、选择题（每小题只有一个正确答案，每小题3分，满分30分） 1．下列因式分解正确的是( ) A ．()2211x x +=+B ．()22211x x x +-=- C ．()()22x 22x 1x 1=-+-D ．()2212x x x x -+=-+2．已知反比例函数2y x-=，下列结论不正确的是（ ） A ．图象经过点（﹣2，1）B ．图象在第二、四象限C ．当x ＜0时，y 随着x 的增大而增大D ．当x ＞﹣1时，y ＞23．12-的相反数是（ ） A ．2-B ．2C ．12-D ．124．小宇妈妈上午在某水果超市买了 16.5 元钱的葡萄，晚上散步经过该水果超市时，发现同一批葡萄的价格降低了 25％ ，小宇妈妈又买了 16.5 元钱的葡萄，结果恰好比早上多了 0.5 千克．若设早上葡萄的价格是 x 元/千克，则可列方程（ ） A ．()16.516.50.5x 125%x +=+B ．()16.516.50.5x 1-25%x +=C ．()16.516.5-0.5x 125%x =+ D ．()16.516.5-0.5x 1-25%x =5．如图，一次函数y 1＝x 与二次函数y 2＝ax 2＋bx ＋c 图象相交于P 、Q 两点，则函数y ＝ax 2＋（b －1）x ＋c 的图象可能是（ ）A． B．C．D．6．超市店庆促销，某种书包原价每个x元，第一次降价打“八折”，第二次降价每个又减10元，经两次降价后售价为90元，则得到方程（）A．0.8x﹣10=90 B．0.08x﹣10=90 C．90﹣0.8x=10 D．x﹣0.8x﹣10=907．如图，⊙O 是等边△ABC 的外接圆，其半径为3，图中阴影部分的面积是（）A．πB．32C．2πD．3π8．如图，有一块含有30°角的直角三角板的两个顶点放在直尺的对边上．如果∠2＝44°，那么∠1的度数是( )A．14°B．15°C．16°D．17°9．如图，已知在Rt△ABC中，∠ABC=90°，点D是BC边的中点，分别以B、C为圆心，大于线段BC长度一半的长为半径圆弧，两弧在直线BC上方的交点为P，直线PD交AC于点E，连接BE，则下列结论：①ED⊥BC；②∠A=∠EBA；③EB平分∠AED；④ED=12AB中，一定正确的是（）A．①②③B．①②④C．①③④D．②③④10．如图，一束平行太阳光线FA、GB照射到正五边形ABCDE上，∠ABG＝46°，则∠FAE的度数是（）A ．26°．B ．44°．C ．46°．D ．72°二、填空题（共7小题，每小题3分，满分21分）11．科学家发现，距离地球2540000光年之遥的仙女星系正在向银河系靠近．其中2540000用科学记数法表示为_____．12．因式分解：223x 6xy 3y -+- =13．如图，在菱形ABCD 中，AB=3，∠B=120°，点E 是AD 边上的一个动点（不与A ，D 重合），EF ∥AB 交BC 于点F ，点G 在CD 上，DG=DE ．若△EFG 是等腰三角形，则DE 的长为_____．14．已知a + ＝3，则的值是_____．15．写出一个比2大且比5小的有理数：______．16．如图，线段AB=10，点P 在线段AB 上，在AB 的同侧分别以AP 、BP 为边长作正方形APCD 和BPEF ，点M 、N 分别是EF 、CD 的中点，则MN 的最小值是_______.17．下表记录了甲、乙、丙、丁四名跳远运动员选拔赛成绩的平均数与方差s 2：甲 乙 丙 丁 平均数（cm ） 561 560 561 560 方差s 2（cm 2）3.53.515.516.5根据表中数据，要从中选择一名成绩好又发挥稳定的运动员参加比赛，应该选择_____． 三、解答题（共7小题，满分69分）18．（10分）解分式方程：12x=3x19．（5分）如图1，四边形ABCD，边AD、BC的垂直平分线相交于点O．连接OA、OB、OC、OD．OE是边CD的中线，且∠AOB+∠COD＝180°（1）如图2，当△ABO是等边三角形时，求证：OE＝12 AB；（2）如图3，当△ABO是直角三角形时，且∠AOB＝90°，求证：OE＝12 AB；（3）如图4，当△ABO是任意三角形时，设∠OAD＝α，∠OBC＝β，①试探究α、β之间存在的数量关系？②结论“OE＝12AB”还成立吗？若成立，请你证明；若不成立，请说明理由．20．（8分）一艘货轮往返于上下游两个码头之间，逆流而上需要6小时，顺流而下需要4小时，若船在静水中的速度为20千米/时，则水流的速度是多少千米/时？21．（10分）为了了解市民“获取新闻的最主要途径”,某市记者开展了一次抽样调查,根据调査结果绘制了如下尚不完整的统计图：根据以上信息解答下列问题:这次接受调查的市民总人数是_______人；扇形统计图中,“电视”所对应的圆心角的度数是_________；请补全条形统计图；若该市约有80万人,请你估计其中将“电脑和手机上网”作为“获取新闻的最主要途径”的总人数.22．（10分）为响应国家的“一带一路”经济发展战略，树立品牌意识，我市质检部门对A、B、C、D四个厂家生产的同种型号的零件共2000件进行合格率检测，通过检测得出C厂家的合格率为95%，并根据检测数据绘制了如图1、图2两幅不完整的统计图．抽查D厂家的零件为件，扇形统计图中D厂家对应的圆心角为；抽查C厂家的合格零件为件，并将图1补充完整；通过计算说明合格率排在前两名的是哪两个厂家；若要从A、B、C、D四个厂家中，随机抽取两个厂家参加德国工业产品博览会，请用“列表法”或“画树形图”的方法求出（3）中两个厂家同时被选中的概率．23．（12分）列方程或方程组解应用题：为响应市政府“绿色出行”的号召，小张上班由自驾车改为骑公共自行车．已知小张家距上班地点10千米．他用骑公共自行车的方式平均每小时行驶的路程比他用自驾车的方式平均每小时行驶的路程少45千米，他从家出发到上班地点，骑公共自行车方式所用的时间是自驾车方式所用的时间的4倍．小张用骑公共自行车方式上班平均每小时行驶多少千米？24．（14分）抛物线y=ax2+bx+3（a≠0）经过点A（﹣1，0），B（32，0），且与y轴相交于点C．（1）求这条抛物线的表达式；（2）求∠ACB的度数；（3）设点D是所求抛物线第一象限上一点，且在对称轴的右侧，点E在线段AC上，且DE⊥AC，当△DCE与△AOC 相似时，求点D的坐标．参考答案一、选择题（每小题只有一个正确答案，每小题3分，满分30分） 1、C 【解题分析】依据因式分解的定义以及提公因式法和公式法，即可得到正确结论． 【题目详解】解：D 选项中，多项式x 2-x+2在实数范围内不能因式分解； 选项B ，A 中的等式不成立；选项C 中，2x 2-2=2（x 2-1）=2（x+1）（x-1），正确． 故选C ． 【题目点拨】本题考查因式分解，解决问题的关键是掌握提公因式法和公式法的方法． 2、D 【解题分析】A 选项：把（-2，1）代入解析式得：左边=右边，故本选项正确；B 选项：因为-2＜0，图象在第二、四象限，故本选项正确；C 选项：当x ＜0，且k ＜0，y 随x 的增大而增大，故本选项正确；D 选项：当x ＞0时，y ＜0，故本选项错误． 故选D ． 3、D 【解题分析】 因为-12+12＝0，所以-12的相反数是12. 故选D. 4、B 【解题分析】分析：根据数量=钱数单价，可知第一次买了16.5x 千克，第二次买了()16.501250x -，根据第二次恰好比第一次多买了 0.5千克列方程即可.详解：设早上葡萄的价格是 x 元/千克，由题意得，()16.516.50.501250x x +=-.故选B.点睛：本题考查了分式方程的实际应用，解题的关键是读懂题意，找出列方程所用到的等量关系. 5、A 【解题分析】由一次函数y 1=x 与二次函数y 2=ax 2+bx+c 图象相交于P 、Q 两点，得出方程ax 2+（b-1）x+c=0有两个不相等的根，进而得出函数y=ax 2+（b-1）x+c 与x 轴有两个交点，根据方程根与系数的关系得出函数y=ax 2+（b-1）x+c 的对称轴x=-12b a-＞0，即可进行判断． 【题目详解】点P 在抛物线上，设点P （x ，ax 2+bx+c ），又因点P 在直线y=x 上， ∴x=ax 2+bx+c ， ∴ax 2+（b-1）x+c=0；由图象可知一次函数y=x 与二次函数y=ax 2+bx+c 交于第一象限的P 、Q 两点， ∴方程ax 2+（b-1）x+c=0有两个正实数根． ∴函数y=ax 2+（b-1）x+c 与x 轴有两个交点，又∵-2ba ＞0，a ＞0 ∴-12b a -=-2b a +12a＞0∴函数y=ax 2+（b-1）x+c 的对称轴x=-12b a-＞0， ∴A 符合条件， 故选A ． 6、A 【解题分析】试题分析：设某种书包原价每个x 元，根据题意列出方程解答即可． 设某种书包原价每个x 元， 可得：0.8x ﹣10=90考点：由实际问题抽象出一元一次方程． 7、D 【解题分析】根据等边三角形的性质得到∠A=60°，再利用圆周角定理得到∠BOC=120°，然后根据扇形的面积公式计算图中阴影部分的面积即可． 【题目详解】∵△ABC 为等边三角形， ∴∠A=60°，∴∠BOC=2∠A=120°，∴图中阴影部分的面积=2 1203360π⨯=3π．故选D．【题目点拨】本题考查了三角形的外接圆与外心、圆周角定理及扇形的面积公式，求得∠BOC=120°是解决问题的关键．8、C【解题分析】依据∠ABC=60°，∠2=44°，即可得到∠EBC=16°，再根据BE∥CD，即可得出∠1=∠EBC=16°．【题目详解】如图，∵∠ABC=60°，∠2=44°，∴∠EBC=16°，∵BE∥CD，∴∠1=∠EBC=16°，故选：C．【题目点拨】本题主要考查了平行线的性质，解题时注意：两直线平行，内错角相等．9、B【解题分析】解：根据作图过程，利用线段垂直平分线的性质对各选项进行判断：根据作图过程可知：PB=CP，∵D为BC的中点，∴PD垂直平分BC，∴①ED⊥BC正确.∵∠ABC=90°，∴PD∥AB.∴E为AC的中点，∴EC=EA，∵EB=EC.∴②∠A=∠EBA正确；③EB平分∠AED错误；④ED=12AB正确.∴正确的有①②④.故选B．考点：线段垂直平分线的性质.10、A【解题分析】先根据正五边形的性质求出∠EAB的度数，再由平行线的性质即可得出结论．【题目详解】解：∵图中是正五边形．∴∠EAB＝108°．∵太阳光线互相平行，∠ABG＝46°，∴∠FAE＝180°﹣∠ABG﹣∠EAB＝180°﹣46°﹣108°＝26°．故选A．【题目点拨】此题考查平行线的性质，多边形内角与外角，解题关键在于求出∠EAB.二、填空题（共7小题，每小题3分，满分21分）11、2.54×1【解题分析】【分析】科学记数法的表示形式为a×10n的形式，其中1≤|a|<10，n为整数．确定n的值时，要看把原数变成a时，小数点移动了多少位，n的绝对值与小数点移动的位数相同．当原数绝对值>1时，n是正数；当原数的绝对值<1时，n 是负数．【题目详解】2540000的小数点向左移动6位得到2.54，所以，2540000用科学记数法可表示为：2.54×1，故答案为2.54×1．【题目点拨】本题考查科学记数法的表示方法．科学记数法的表示形式为a×10n的形式，其中1≤|a|<10，n为整数，表示时关键要正确确定a的值以及n的值．12、﹣3（x﹣y）1【解题分析】解：﹣3x1+6xy﹣3y1=﹣3（x1+y1﹣1xy）=﹣3（x﹣y）1．故答案为：﹣3（x﹣y）1．点睛：本题考查了提公因式法，公式法分解因式，提取公因式后利用完全平方公式进行二次分解，注意分解要彻底．13、1或3 3【解题分析】由四边形ABCD 是菱形，得到BC ∥AD ，由于EF ∥AB ，得到四边形ABFE 是平行四边形，根据平行四边形的性质得到EF ∥AB ，于是得到EF=AB=3，当△EFG 为等腰三角形时，①EF=GE=3时，于是得到DE=DG=12AD÷32=1，②GE=GF 时，根据勾股定理得到DE=33． 【题目详解】解：∵四边形ABCD 是菱形，∠B=120°，∴∠D=∠B=120°，∠A=180°-120°=60°，BC ∥AD ， ∵EF ∥AB ，∴四边形ABFE 是平行四边形， ∴EF ∥AB ，∴EF=AB=3，∠DEF=∠A=60°，∠EFC=∠B=120°， ∵DE=DG ，∴∠DEG=∠DGE=30°， ∴∠FEG=30°，当△EFG 为等腰三角形时， 当EF=EG 时，EG=3， 如图1，过点D 作DH ⊥EG 于H ， ∴EH=123在Rt △DEH 中，DE=0cos30HE=1，GE=GF 时，如图2，过点G作GQ⊥EF，∴EQ=12EF=32，在Rt△EQG中，∠QEG=30°，∴EG=1，过点D作DP⊥EG于P，∴PE=12EG=12，同①的方法得，DE=33，当EF=FG时，由∠EFG=180°-2×30°=120°=∠CFE，此时，点C和点G重合，点F和点B重合，不符合题意，故答案为1或33．【题目点拨】本题考查了菱形的性质，平行四边形的性质，等腰三角形的性质以及勾股定理，熟练掌握各性质是解题的关键．14、7【解题分析】根据完全平方公式可得：原式=．15、2【解题分析】25.【题目详解】252（答案不唯一），故答案为：2（答案不唯一）．【题目点拨】此题考查无理数的估算，解题的关键在于利用题中所给有理数的大小求符合题意的答案.16、2【解题分析】设MN=y ，PC=x ，根据正方形的性质和勾股定理列出y 1关于x 的二次函数关系式，求二次函数的最值即可．【题目详解】作MG ⊥DC 于G ，如图所示：设MN=y ，PC=x ，根据题意得：GN=2，MG=|10-1x|，在Rt △MNG 中，由勾股定理得：MN 1=MG 1+GN 1，即y 1=21+（10-1x ）1．∵0＜x ＜10，∴当10-1x=0，即x=2时，y 1最小值=12，∴y 最小值=2．即MN 的最小值为2；故答案为：2．【题目点拨】本题考查了正方形的性质、勾股定理、二次函数的最值．熟练掌握勾股定理和二次函数的最值是解决问题的关键．17、甲【解题分析】首先比较平均数，平均数相同时选择方差较小的运动员参加．【题目详解】 ∵==x x x x 甲乙丁丙＞ ，∴从甲和丙中选择一人参加比赛，∵22S S 甲丙＜ ，∴选择甲参赛，故答案为甲．【题目点拨】此题考查了平均数和方差，关键是根据方差反映了一组数据的波动大小，方差越大，波动性越大，反之也成立．三、解答题（共7小题，满分69分）18、x=1【解题分析】分式方程去分母转化为整式方程，求出整式方程的解得到x的值，经检验即可得到分式方程的解．【题目详解】方程两边都乘以x（x﹣2），得：x=1（x﹣2），解得：x=1，检验：x=1时，x（x﹣2）=1×1=1≠0，则分式方程的解为x=1．【题目点拨】本题考查了解分式方程，利用了转化的思想，解分式方程注意要检验．19、（1）详见解析；（2）详见解析；（3）①α+β＝90°；②成立，理由详见解析．【解题分析】(1)作OH⊥AB于H，根据线段垂直平分线的性质得到OD=OA，OB=OC，证明△OCE≌△OBH，根据全等三角形的性质证明；(2)证明△OCD≌△OBA，得到AB=CD，根据直角三角形的性质得到OE=12CD，证明即可；(3)①根据等腰三角形的性质、三角形内角和定理计算；②延长OE至F，是EF=OE，连接FD、FC，根据平行四边形的判定和性质、全等三角形的判定和性质证明．【题目详解】(1)作OH⊥AB于H，∵AD、BC的垂直平分线相交于点O，∴OD=OA，OB=OC，∵△ABO是等边三角形，∴OD=OC，∠AOB=60°，∵∠AOB+∠COD＝180°∴∠COD=120°，∵OE 是边CD 的中线，∴OE ⊥CD ，∴∠OCE =30°，∵OA =OB ，OH ⊥AB ，∴∠BOH =30°，BH =12AB ， 在△OCE 和△BOH 中，OCE BOH OEC BHO OB OC ∠=∠⎧⎪∠=∠⎨⎪=⎩，∴△OCE ≌△OBH ，∴OE =BH ，∴OE =12AB ； (2)∵∠AOB =90°，∠AOB +∠COD =180°，∴∠COD =90°，在△OCD 和△OBA 中，OD OA COD BOA OC OB =⎧⎪∠=∠⎨⎪=⎩，∴△OCD ≌△OBA ，∴AB =CD ，∵∠COD =90°，OE 是边CD 的中线，∴OE =12CD ， ∴OE =12AB ； (3)①∵∠OAD =α，OA =OD ，∴∠AOD =180°﹣2α，同理，∠BOC =180°﹣2β，∵∠AOB +∠COD =180°，∴∠AOD +∠COB =180°，∴180°﹣2α+180°﹣2β=180°，整理得，α+β=90°；②延长OE 至F ，使EF =OE ，连接FD 、FC ，则四边形FDOC 是平行四边形，∴∠OCF +∠COD =180°，FC OA =，∴∠AOB =∠FCO ，在△FCO 和△AOB 中，FC OA FCO AOB OC OB =⎧⎪∠=∠⎨⎪=⎩，∴△FCO ≌△AOB ，∴FO =AB ，∴OE =12FO =12AB ． 【题目点拨】本题是四边形的综合题，考查了线段垂直平分线的性质、全等三角形的判定和性质以及直角三角形斜边上的中线性质、平行四边形的判定与性质等知识；熟练掌握平行四边形的判定与性质，证明三角形全等是解题的关键．20、1千米/时【解题分析】设水流的速度是x 千米/时，则顺流的速度为（20+x ）千米/时，逆流的速度为（20﹣x ）千米/时，根据由货轮往返两个码头之间，可知顺水航行的距离与逆水航行的距离相等列出方程，解方程即可求解.【题目详解】设水流的速度是x 千米/时，则顺流的速度为（20+x ）千米/时，逆流的速度为（20﹣x ）千米/时，根据题意得：6（20﹣x ）=1（20+x ），解得：x=1．答：水流的速度是1千米/时．【题目点拨】本题考查了一元一次方程的应用，读懂题意，找出等量关系，设出未知数后列出方程是解决此类题目的基本思路.21、 (1)1000；(2)54°；（3）见解析；（4）32万人【解题分析】根据“每项人数＝总人数×该项所占百分比”，“所占角度＝360度×该项所占百分比”来列出式子，即可解出答案. 【题目详解】解：(1)400÷40%＝1000(人)(2)360°×1501000＝54°，故答案为：1000人； 54°；(3)1－10%－9%－26%－40%＝15% 15%×1000＝150(人)(4)80×6601000＝52.8(万人)答：总人数为52.8万人.【题目点拨】本题考查获取图表信息的能力，能够根据图表找到必要条件是解题关键.22、（1）500，90°；（2）380；（3）合格率排在前两名的是C、D两个厂家；（4）P（选中C、D）=16．【解题分析】试题分析：（1）计算出D厂的零件比例，则D厂的零件数=总数×所占比例，D厂家对应的圆心角为360°×所占比例；（2）C厂的零件数=总数×所占比例；（3）计算出各厂的合格率后，进一步比较得出答案即可；（4）利用树状图法列举出所有可能的结果，然后利用概率公式即可求解．试题解析：（1）D厂的零件比例=1-20%-20%-35%=25%，D厂的零件数=2000×25%=500件；D厂家对应的圆心角为360°×25%=90°；（2）C厂的零件数=2000×20%=400件，C厂的合格零件数=400×95%=380件，如图：（3）A厂家合格率=630÷（2000×35%）=90%，B厂家合格率=370÷（2000×20%）=92.5%，C厂家合格率=95%，D厂家合格率470÷500=94%，合格率排在前两名的是C、D两个厂家；（4）根据题意画树形图如下：共有12种情况，选中C、D的有2种，则P（选中C、D）=212=16．考点：1.条形统计图；2.扇形统计图；3. 树状图法.23、15千米．【解题分析】首先设小张用骑公共自行车方式上班平均每小时行驶x千米，根据题意可得等量关系：骑公共自行车方式所用的时间=自驾车方式所用的时间×4，根据等量关系，列出方程，再解即可．【题目详解】：解：设小张用骑公共自行车方式上班平均每小时行驶x千米，根据题意列方程得：10 x =4×1045x解得：x=15，经检验x=15是原方程的解且符合实际意义．答：小张用骑公共自行车方式上班平均每小时行驶15千米．24、（1）y=﹣2x2+x+3；（2）∠ACB=41°；（3）D（78，7532）．【解题分析】试题分析：()1把点,A B 的坐标代入即可求得抛物线的解析式.()2作BH ⊥AC 于点H ，求出BH 的长度，即可求出∠ACB 的度数.()3延长CD 交x 轴于点G ，△DCE ∽△AOC ，只可能∠CAO =∠DCE .求出直线CD 的方程，和抛物线的方程联立即可求得点D 的坐标.试题解析：（1）由题意，得309330,42a b a b -+=⎧⎪⎨++=⎪⎩ 解得21a b =-⎧⎨=⎩． ∴这条抛物线的表达式为223y x x =-++．（2）作BH ⊥AC 于点H ，∵A 点坐标是（－1，0），C 点坐标是（0，3），B 点坐标是（32，0）， ∴，AB=52，OC=3，∵BH AC OC AB ⋅=⋅，即∠BAD=532BH =⨯，∴BH =． Rt △ BCH中，BH =BHC =90º，∴sin 2ACB ∠=． 又∵∠ACB 是锐角，∴45ACB ∠=︒．（3）延长CD 交x 轴于点G ，∵Rt △ AOC 中，AO=1，，∴cos AO CAO AC ∠==． ∵△DCE ∽△AOC ，∴只可能∠CAO =∠DCE ．∴AG = CG ．∴122cos AC GAC AG AG ∠===． ∴AG=1．∴G 点坐标是（4，0）． ∵点C 坐标是（0，3），∴3:34CD l y x =-+． ∴233423y x y x x ⎧=-+⎪⎨⎪=-++⎩ 解得787532x y ⎧=⎪⎪⎨⎪=⎪⎩，03x y =⎧⎨=⎩（舍）. ∴点D 坐标是775,.832⎛⎫⎪⎝⎭。
2024届重庆八中学、九十五中学等校中考语文五模试卷含解析
2024届重庆八中学、九十五中学等校中考语文五模试卷注意事项：1．答卷前，考生务必将自己的姓名、准考证号、考场号和座位号填写在试题卷和答题卡上。
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一、积累与运用1．将下列句子组成一段话，排序恰当的一项是（）①曾经万里飞沙的毛乌素沙漠，千余年后近80%穿上绿装。
②中国的“绿色奇迹”，令世界刮目相看。
③绿水青山,就是金山银山，绿色行动正在护佑着也将永远护佑着我们的生存家园。
④被称为“中国魔方”的草方格，紧紧锁住宁县中卫的黄沙，让“塞上江南”实至名归。
⑤这些“染绿”“复绿”的故事，折射出中国生态文明建设的力度与成就。
A．③①④⑤②B．②①④⑤③C．④⑤①②③D．⑤④③②①2．下列句子，排序最最恰当的一组是（）①清明礼俗文化充分体现了中华民族礼敬祖先、慎终追远的人文精神。
②但扫墓祭祖、踏青郊游是共同基本礼俗主题。
③清明节在历史发展中承载了丰富的文化内涵。
④每逢清明时节，人们无论身处何方，都会回乡参加祭祖活动，缅怀祖先。
⑤全国各地因地域不同而又存在着习俗内容上或细节上的差异。
⑥在祖先祭祀仪式中慎终追远，文化传承是清明礼俗的重要功能。
A．①⑥⑤②④③B．①⑤②④⑥③C．③⑤②④①⑥D．④⑤②③①⑥3．下列句子排列顺序最恰当的一项是( )①一方面，以娱乐为职能的大众文化得到蓬勃发展的机会。
②与此同时，文化领域却有全然不同的景观。
重庆八中中考试题
中考测试（八中）II.单项选择（20分）21.English is ________useful language and it is widely used in the word.A. aB. anC. theD. /22 . — Do you know the funny man Yue Yunpeng?— Yes. He was born _______April 15th,1985 and he first put on a performance at 25.A. inB. onC. duringD.at23 . — You don’t look well. What’s wrong?— I think I have a fever. I want to go to the_____________.A.schoolB. bookstoreC. hospitalD. Cinema24.Be careful with the knife. You may cut ____________.A.youB. yourC. yoursD. yourself25.Tom is a good boy. He helps his mom ____________housework every day.A. doB. doingC. doesD. did26 — I haven’t seen you for a long time.— Oh, I___________ to Chongqing three days ago.A. have returnedB. returnC. will returnD. returned27 — Have you ________ the TV show The Descendants of the Sun?— Yes, I watch it with my daughter every evening.A. heard fromB. heard ofC. put onD. put off28 — Bob, would you mind taking out the rubbish?— ____________, I’ll do it right away.A. Not at allB. All rightC. Sorry, I can’tD. Yes, please29. Sam worked out the problem in only three minutes. It’s not as ______ as he thought.A. easyB. easierC. hardD. harder30 _____________ she didn’t say anything to me, I was sure she had seen me.A. BecauseB. ThoughC. UnlessD. Until31 — Chongqing has developed a lot in the last few years.— Yes. And a new amusement park ___________ here in 2017.A. is builtB. buildsC. will buildD. will be built32 — Can I speak to Mr. Brown?— ___________. He’s in the kitchen and I’ll call him right away.A. Hold on, pleaseB. I’m afraid notC. I hope soD. I’m sorry33 ______________lovely girl she is! We all love her.A. What aB. WhatC. How aD. How34 Driving was so difficult for me that I ________ knew where to put my feet the first time I gotinto the car.A. usuallyB. alwaysC. everD. hardly35 — Do you have any idea __________ ?— Yes, on the second floor.A. where is the movieB. where the movie theater isC. when is movie B. when the movie is36 ____________ her dream come true, Alice studies harder than any of her classmates.A. MakingB. To makeC. MakeD. Made37 — Must I look up each new word while reading?— No, you __________. You should try to guess its meaning.A. can’tB. mustn’tC. needn’tD. may not38 — Do you and your sister like comedies, Linda?— Yes. _________ of us think they are interesting.A. BothB. AllC. NeitherD. Either39 — ____________ do you have exams at your school?— Once a month.A. How oftenB. How longC. How soonD. How many40 — It’s raining hard outside. Could I use your umbrella, Linda?— Sorry. I ______ it at home this morning.A. forgetB. leftC. leaveD. forgotⅢ. 完形填空（每小题1.5分，共15分）In modern society we can see competitions(竞争) everywhere, both in our work and in our life. Team spirit(团队精神) is so important and helpful. It can lead us to 41 in the competitions.Team spirit means that people work together and help 42 as part of a team. With this spirit, people try hard to make their team the 43 of all.Everyone has experienced(经历) team spirit one way or another, whether they were part of a team or saw a group of people 44 for their favorite player.There are different kinds of team spirit. One kind is between a team of people whose efforts and teamwork are needed in reaching 45 goal. Another kind is when a group of people support a person, a team or even their country.Team spirit brings good effects. It helps to builds up 46 and trust(信任) between people who may not get on well when they don’t have such team spirit 47 , team spirit may also cause bad effects. For example, too great team spirit may cause fights or arguments with other team members.Some people don’t understand team spirit 48 . They think team spirit means having to become a member of a team or a fan club. In fact, team spirit can be built anywhere—between friends, workmates or even between, two people who have never 49 before. You don’t have to wear the same team spirit clothes. Anyone can show team spirit just 50 showing support for the same goal.( )41. A.dream B.surprise C.success D.end( )42. A.each other B.other C.another D.the other ( )43. A.fastest B.earliest C.biggest D.best( )44. A.call B.cheer C. to cheer D.to call ( )45. A.their B.his C.my D.our( )46. A.luck B.friendship C.health D.help( )47. A.But B.Although C.However D.So( )48. A.easily B.quickly C.simply D.properly ( )49. A.written B.heard C.met D.seen( )50. A.by B.through C.in D.withIV 阅读理解（每小题2分，共30分）AAre you a fan of traveling? Well, soon there will be a new place for you to take your vacation—the moon. Last month, the European Space Agency (ESA) said they would build an international moon base—the Moon Village. The purpose of building the village is to open the door for deeper space research. And it will also be a tourist center. According to the head of the ESA, Johann-Dietrich Woemer, it will only take about 20 years to finish it.However ,there are still some challenges, and the biggest one is how to get the building material into space without costing too much. Scientists suggest using the ice water and other things on the moon to print 3-D building materials, so people don’t have to carry everything from the earth.The ESA chose to build the base on the moon instead of the Mars because the moon is about 144 times closer than the Mars.The ESA has invited the US,Russia,China,India,Japan and some other countries to join in the moon plan.It hopes that in the future the moon will become a place where all the countries of the world can work together.51.The ESA will build an international base on__________.A.the moonB.the earthC.the MarsD.the sun52.The ESA plan to build the village__________.A.to open the door for deeper space researchB.to make all the countries work togetherC.to make money by building it as a tourist centerD.to get a new place to live in53.The biggest problem in building the base is ________.A.how to use 3-D printersB.where to build itC.how to get enough moneyD.how to get the building materials into space withoutcosting too muchBStudents from different schools are talking about strange rules in their schools.Zhao Jiacheng,13,from Xi’an: Students are not allowed to bring any balls to school. Our teachers think they will distract(使...分心) us from our studies. As a result, half of the students don’t have balls to play with during the PE class. Many people are disappointed about it. Another strange rule is that girls must have short hair.They think it will make them look unified (统一的).What a strange rule !Cui Anqi,15,from Guangdong: At my school,there is a strange rule for Class 5,Junior 2.Boys and girls must stay at least one meter away from one another.The teacher in their class says that this rule will help build pure friendships between boys and girls.Students don’t like it at all.I don’t think it’s reasonable. I’m sure that there are pure friendships between boys and girls.The rule is unnecessary.Wang Ying, 13, from Shanghai: At my school,we aren’t allowed to bring snacks and drinks into teaching buildings.I once bought a fried drumstick( 鸡腿) and a drink during break time.But I didn’t eat them by the time the break was over.So I put them alongside a garden. However,when I went to find them after class,there many ants on them.I don’t like the rule.Zhang Xueling,15,from Jiangsu: This term,we got vending machines(自动贩卖机) around our teaching buildings and dormitories. We were all excited and couldn’t wait to buy snacks from them.However,our school doesn’t let us use them.And they don’t give us a reason.We don’tunderstand why.Xiao Li,16,from Beijing: Many girls like to use colorful hair ties.But our school doesn’t allow it. Girls can only use black hair ties.At the beginning,our teachers checked it every day. My classmates and I followed it.But as time went by,no one followed it anymore.54. How many students talk about strange rules in their schools?A. 5B. 4C. 3D. 255. Why aren’t students allowed to take any balls to school?A. Because it will make them look unified.B. Because the teachers think balls are bad for the students.C. Because the teachers think balls will distract the students from their studies.D. Because balls are too expensive.56. The underlined word pure in Paragraph 3 may mean ___________.A. 可爱的B. 有价值的C. 短暂的D.纯洁的57. Students aren’t allowed to _________ at Wang Ying’s school.A.have short hairB.bring snacks and drinks into teaching buildingse colorful hair tiesD.buy snacks from the vending machineCWhat can help parents understand their kids better? More than 8,000 US kids answered this question in an online survey by Time for Kids and Kids Health Org.Many US kids—two out of three—said they get along with their parents.But that doesn’t mean they never disagree. In fact, most kids reported arguing with their parents, at least sometimes.And two out five kids said arguments sometimes even includes shouting at each other.It’s certainly normal to disagree and argue,” says Lyness,an American child psychologist(心里学家). “But it’s also important to learn how to do so respectfully. Be patient. Don’t use a raised, angry voice.”And not surprisingly, three out of four kids said they had lied to their parents some times.Many said they lie so they would not get in trouble or make their parents disappointed. According to Lyness, lying isn’t just wrong. It can actually have had results. Telling the truth builds trust. Telling the truth,says Lyness,shows maturity(成熟).But older kids actually lie more often than younger ones. Kids aged 12 to 14 not only said they lie more,but they also reported having less fun,feeling less close and not getting along as well with their parents.According to Lyness, those feelings are quite common. As kids become more independent,they have more areas of disagreement with their parents.But it doesn’t have to be that way. “Kids and parents get along differently at each stage of the journey,” she says. “As kids grow and change,it is important for everybody to change.”58．________of the US kids get along with their parents.A.One out of twoB.Two out of threeC.Two out of fiveD.Three out of five59.Which of the following sentences is true according to the passage?A.Two out of the three the US kids never disagree with their parents.B.Older kids lie to their parents less often than younger ones.C.Lying is wrong and it can cause bad results.D.Kids aged 12 to 14 have less fun but they feel closer to their parents60.As kids grow and change,________should change.A.only parentsB.only kidsC.both kids and parentsD.neither kids nor parents61.The child psychologist Lyness may agree that__________.A.it’s not normal to disagree and agrue between parents and kidsB.parents don’t need to be patient with their kidsC.kids can agrue with their parents in a raised angry voiceD.kids need to agrue with parents with respectDSome people can find the different color lump(色块)among 45,000 lumps.Others can remember 120 strangers and their fingerprints. There are also some people who can work out a seven-digit number(七位数)multiply(乘以) a 10-digit number in just a fehneseiw seconds.In a Chinese science TV show called Super Brain,you can be amazed by these people’s great brainpower. Brainpower actually means intelligence( 智力)which includes different abilities, such language, logic, memory and even imagination.Wang Yuheng is a painter from Beijing. He was born in 1981 and he has super observing( 观察)ability. In February, 2015 he took part in one of the competitions.There were 520 glasses of water on the stage. A judge chose one glass of water and give it to Wang to look at.Then the glass was put back where it was. He had to find this glass of water among 520 glasses of water. Unbelievably, he found it in just few minutes.You may ask how the competitors’ brains can be so strong and powerful. Are they born to be talents? Do you also want to have super brainpower? Here’s what we can do to improve our brainpower.ExerciseStudies have shown that exercise can improve the brain’s functions(功能), such as planning, organizing and multitasking. Exercise can also help you be in a good mood.Training your memoryHow often do you hear people say, “I wish I had a better memory ?” But no one does anything about this! If you train yourself to memorize phone numbers and other important numbers, you will see a change.Doing something newWhen you experience something new you actually stimulate( 刺激) your brain! This creates new neural pathways(神经通路) and increase your intelligence. You could take a new way to your school, try a new snack or even a new form of exercise!62. According to the passage, brainpower includes all the following abilities except__________.A.memorynguageB.imaginationmunication63. We can learn from the passages that _________.A.WangYuheng was 32 years old when he joined in the competitionB.Everyone believed that Wang Yuheng could easily find the classC.It was hard to find the glass because the judge put it in a new placeD. Wang Yuheng succeeded in finding the glass because of his super observing ability64.A.BC.study hard and remember more facts and informationD.watch the Chinese science TV show called Super Brain65.Which is the best title of this passage?A..Intelligence is important.B.Born talent.C.How to have super brainpower?D.How to be more talented?A: Tom,let’s go somewhere interesting to relax.B: 66 .A:Shall we go to the cinema? Some new films are on this week.B: 67 . Which film would you like to see?A: Let me search on the Internet. Er… How about Zootopia?B: Yeah, I have heard of it. It’s so interesting! 68_____A: UME Cinema is a little far. Let’s go to BONA Cinema.B: OK. Look! So many clouds in the sky! 69A: Yes. The weather report says it will be rainy tonight.B: 70A: I will. The film will begin in two hours. We can go there after dinner.B: Alright. Let’s meet at the gate of the cinema.A: OK. See you again.66.________ 67.________ 68.________ 69.________ 70.________VI 任务型阅读（每题2分，共8分）What do Australian teenagers do in their free time ? Many of them like to spend it with their friends.They play together outside or do some shopping. But a girl named Shanaya White spends her free time in a different way---she works hard to cheer upthose children with serious illness.Shanaya comes from Queenland. In September 2014, she spent four days in hospital because of an illness. She found it was really hard to stay in hospital. She felt upset when she thought many children had to stay in hospital for weeks and months because of illnesses. After learning more about childhood illness,she decided to help those children.She made a Facebook Page. On it, she posted stories of other children’s fights against illnesses, hoping more people would care about those children. “I name it Happy Little Smiles because I want to bring happiness and smiles to the kids in need,”saidShanaya. She also made “Happy Packs” and sent the packs to those children with illnesses. Inside the packs, there were toys , books and a mix of activities.It was a success and she made many sick children smile. And thanks to her,more and more people began to care about and help the children.71. What does Shanaya do in her free time?72. How did Shanaya feel when she thought many children had to stay in hospital because of illnesses?73. Did more children begin to care about the sick children?74. What do you think about the girl Shanaya?VII. 句型转换（每空1分，共10分）75. Lily often makes dinner for her family after school.（否定句）Lily _________often _________dinner for her family after school.76. I was washing the clothes at this time yesterday.________ ________ you doing at this time yesterday?77. Luckily, they got to the airport on time. 同义句Luckily, they _______ _______ the airport on time.78.他付款买下这些西红柿，然后匆匆回家了。
2024年重庆八中中考数学一模试卷及答案解析
2024年重庆八中中考数学一模试卷一、选择题：（本大题10个小题，每小题4分，共40分）在每个小题的下面，都给出了代号为A、B、C、D的四个答案，其中只有一个是正确的，请将答题卡上题号右侧正确答案所对应的方框涂黑。
1．（4分）﹣6的倒数是（）A．6B．﹣6C．D．﹣2．（4分）五个大小相同的正方体搭成的几何体如图所示，从上面得到的视图是（）A．B．C．D．3．（4分）2024年某市计划重点工程建设项目投资总额为50450000万元，将数50450000用科学记数法表示为（）A．50.45×106B．0.5045×108C．5.045×107D．5.045×1064．（4分）把一块直尺与一块三角板如图放置，若∠1＝47°，则∠2的度数为（）A．53°B．45°C．43°D．33°5．（4分）用边长相等的正方形和等边三角形按如图所示的规律拼图案，其中第①个图案用了4个正方形，第②个图案用了6个正方形，第③个图案用了8个正方形，…，按此规律排列下去，则第2024个图案中用的正方形的个数是（）A．4045B．4046C．4048D．40506．（4分）设n为正整数且，则n的值为（）A．5B．6C．7D．87．（4分）如图，AB是⊙O的直径，过AB的延长线上的点C作⊙O的切线，切点为P，点D是⊙O上一点，连接BD，DP，若∠BDP＝α，则∠C等于（）A．αB．2αC．90°﹣αD．90°﹣2α8．（4分）某种植物只有一个主干，该主干上长出若干数目的支干，每个支干又长出同样数目的小分支，主干、支干和小分支的总数是111，设一个主干长出x个支干，则下列方程中正确的是（）A．1+x2＝111B．（1+x）2＝111C．1+x+x2＝111D．1+（1+x）+（1+x）2＝1119．（4分）如图，已知正方形ABCD的边长为1，点E为边BC上一点，连接AE，作∠DAE的平分线交CD于点F，若F为CD的中点，则BE的长为（）A．B．C．D．10．（4分）按顺序排列的8个单项式a，b，c，d，﹣a，﹣b，﹣c，﹣d中，任选m（m≥2）个互不相邻的单项式（其中至少包含一个系数为1的单项式和一个系数为﹣1的单项式）相乘，计算得单项式M，然后在剩下的单项式中再任选若干个单项式相乘，计算得单项式N，最后计算M﹣N，称此为“积差操作”．例如：当m＝3时，可选互不相邻的b，﹣a，﹣c相乘，得M＝abc，在剩下的单项式a，c，d，﹣b，﹣d中可选c，d相乘，得N＝cd，此时M﹣N＝abc﹣cd，…．下列说法中正确的个数是（）①存在“积差操作”，使得M﹣N为五次二项式；②共有3种“积差操作”，使得M﹣N＝ad﹣bc；③共有12种“积差操作”，使得M﹣N＝0．A．0B．1C．2D．3二、填空题（本大题8个小题，每小题4分，共32分）请将每小题的答案直接填在答题卡中对应的横线上11．（4分）计算：﹣14+|﹣3|＝．12．（4分）已知反比例函数与一次函数y＝kx﹣2的图象交于点A（﹣1，3），则k的值为．13．（4分）正n边形的每一个外角都是它相邻的内角的2倍，则n的值为．14．（4分）有四张正面分别标有数字﹣2，，0，2的卡片，它们除数字不同外其余全部相同．现将四张卡片背面朝上，洗匀后从中随机抽取两张，则抽取的两张卡片上的数字之积为负数的概率是．15．（4分）如图，在Rt△ABC中，∠ACB＝90°，∠A＝60°，AC＝2，点D是AB边上的中点，以点D 为圆心，BD的长为半径作弧BC．则图中阴影部分的面积为．16．（4分）如图，D，E是△ABC外两点，连接AD，AE，有AB＝AD，AC＝AE，∠BAD＝∠CAE＝40°．连接CD，BE交于点F，则∠DFE的度数为．17．（4分）若关于x的一元一次不等式组有解且最多有3个整数解，且使关于y的分式方程有整数解，则所有满足条件的整数a的值之和是．18．（4分）如果一个四位自然数的各数位上的数字不全相等，满足，那么称这个四位数为“跳跃数”．例如：四位数1323，∵12+33＝5（1+2+3+3），∴1323是“跳跃数”；又如：四位数5324，∵52+34≠5（5+3+2+4），∴5324不是“跳跃数”．若一个“跳跃数”为，则这个数为；若一个“跳跃数”的前三个数字组成的三位数与后三个数字组成的三位数的差能被7整除，则满足条件的“跳跃数”的最大值是．三、解答题：（本大题8个小题，第19题8分，其余每题各10分，共78分）解答时每小题必须给出必要的演算过程或推理步骤，画出必要的图形（包括辅助线），请将解答过程书写在答题卡中对应的位置上。
2024年重庆八中重点达标名校中考语文模拟试题含解析
2024年重庆八中重点达标名校中考语文模拟试题注意事项1．考试结束后，请将本试卷和答题卡一并交回．2．答题前，请务必将自己的姓名、准考证号用0．5毫米黑色墨水的签字笔填写在试卷及答题卡的规定位置．3．请认真核对监考员在答题卡上所粘贴的条形码上的姓名、准考证号与本人是否相符．4．作答选择题，必须用2B铅笔将答题卡上对应选项的方框涂满、涂黑；如需改动，请用橡皮擦干净后，再选涂其他答案．作答非选择题，必须用05毫米黑色墨水的签字笔在答题卡上的指定位置作答，在其他位置作答一律无效．5．如需作图，须用2B铅笔绘、写清楚，线条、符号等须加黑、加粗．一、积累与运用1．下列语句中，没有．．语病的一项是（）A．良好的语文素养是学生学好其他课程的基础，也是学生全面发展和终身发展的基础。
B．能不能战胜自己思想上的弱点，是一个人在事业上成功的关键。
C．在学习中，我们应注意培养自己观察问题、解决问题和分析问题的能力。
D．有关部门最近发出通知，要求各地在国庆期间严防安全不出现问题。
2．下列说法错误的一项是（）A．维吾尔族姑娘插上金色的翅膀，在广阔的天地里自由地飞翔。
（这句话把人当做动物来写，运用了“拟物”的修辞手法。
）B．双腿瘫痪后，我的脾气变得暴怒无常。
（句中“双腿瘫痪后”在句中的成分是定语，“暴怒无常”在句中的成分是补语。
）C．我们家赶忙答应了他的请求，并且决定在举行婚礼之后全家到哲尔塞岛去游玩一次。
（句中“赶忙”一词的词性是副词，修饰限制“答应”。
）D．孔乙已是站着喝酒而穿长衫的唯一的人。
他身材高大；青白脸色，皱纹间时常夹些伤痕；一部乱蓬蓬的花白胡子。
（句中“身材高大”是一个主谓短语。
）3．下列各句中标点符号使用规范的一项是A．语言文字的学习。
就理解方面说，是得到一种知识；就运用方面说，是养成一种习惯。
B．通过注入历史、文化、艺术、科技等元素，绿道为城市打开了一个全新的交互界面，人们漫步绿道，便是在阅读这座城市，与它的过去、现在和未来进行对话。
2024年重庆八中学中考联考英语试卷含答案
2024年重庆八中学中考联考英语试卷含答案考生须知：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、---Do you know ______ what your dream is?---Yes. I will work hard to make my dream come true.A．exactly B．hardly C．carefully D．nearly2、—Do you do any sports now?—Yes, all of us exercise at________least________hour a day in and outside school.A．the; a B．a; an C．/; a D．/; an3、―Excuse me, could you tell me ?―There is a bank on the second floor. Y ou can make it there.A．where the bank is B．how I can get to the bankC．if there's a bank near here D．where I can exchange money4、The boy promised ______ late for school again.A．not to be B．to not be C．not being D．being not5、—What do you think of the movie you saw last night?—I think it is worth ________.A．seeing B．sees C．to see6、-Could you please when you go out? It smells terrible in the room.-Sure. But where should I put it?A．take out the trash B．sweep the floorC．turn off the light D．fold the clothes7、It’s very important ______us _____ a second language.A．for, to learn B．for, learn C．to, to learn D．to, learn8、―Which magazine do you like better, Let's talk in English or English Salon?―I like of them. They are useful for English learning.A．all B．both C．either D．neither9、Time waits for no man．But some people won't realize the importance of time______it's gone．A．as B．since C．when D．until10、—I joined in 2019 Yangzhou International Half Marathon, ______ I couldn’t run as fast as a real athlete.—That’s really great! You’re my hero！A．though B．until C．unless D．ifⅡ. 完形填空11、I have never taken cooking classes. I learned cooking 1 my mother because she was really 2 in teaching me. Do you kno w why? When my mother got married, she didn’t know anything about cooking. My grandmother never allowed her 3 in the kitchen.My mother did not start to cook 4 she was twenty-five. At the beginning, it was very hard for her. So she had to take cooking classes to prepare our meals. After 5 that experience, she decided to teach me to do some cooking 6 she didn’t want me to have the same experience. I remember when I was seven 7 old, I often stayed in the kitchen and watched her cook. I always helped her. Sometimes we prepared meals that my mother already knew 8 to make them, and sometimes we prepared them from recipes. Nowadays, I am really thankful for that experience. Because I don’t need any help to cook a meal. I can cook for 9 or for a group of people. It doesn’t matter.I will teach my children and I don’t want them to have the same experience10 my mother. If one day I am not with them, I want to be sure that they can also eat well.1．A．by B．to C．from D．after2．A．interesting B．interested C．interest D．interests3．A．staying B．stayed C．to stay D．stay4．A．if B．after C．since D．until5．A．having B．have C．to have D．had6．A．so B．because C．although D．but7．A．years B．year’s C．year D．years’8．A．where B．what C．when D．how9．A．myself B．me C．mine D．I10．A．so B．as C．such D．ofⅢ. 语法填空12、阅读下面材料，在空白处填入适当的内容(1个单词) 或括号内单词的正确形式。
2024届重庆八中重点达标名校中考语文最后一模试卷含解析
2024届重庆八中重点达标名校中考语文最后一模试卷请考生注意：1．请用2B铅笔将选择题答案涂填在答题纸相应位置上，请用0．5毫米及以上黑色字迹的钢笔或签字笔将主观题的答案写在答题纸相应的答题区内。
写在试题卷、草稿纸上均无效。
2．答题前，认真阅读答题纸上的《注意事项》，按规定答题。
一、积累与运用1．下列语句的顺序排列恰当的一项是（）①从而使“痛苦指数”下降，“幸福指数”上升②这种条理性和有序性正是内心满足感的主要来源③守时让一切都变得有条理起来，使生活有序起来④而守时可以减缓甚至消除因时间不确定带来的焦虑⑤现代人普遍患有“时间焦虑症”A．②③⑤④①B．③②⑤④①C．③②①⑤④D．③⑤②④①2．下列句子没有语病的一项是（）A．有关各方能否本着维护地区稳定，促进世界和平，是解决朝鲜半岛问题的关键。
B．2018年3月14日，圆周率日，也是爱因斯坦的诞辰日，与疾病顽强斗争的著名科学家斯蒂芬·霍金在这一天逝世。
C．主流媒体及时纠正并指出青少年沉迷“抖音”行为，录播不良视频的危害，让人感到欣慰。
D．通过南海海域举行的隆重海上阅兵仪式，使我们看到了人民海军崭新的面貌，激发了国人的爱国热情。
3．下列句子中划线成语使用正确的一项是（）A．这两本成语词典各得其所，一本重视溯源，一本例句丰富，特色都很鲜明。
B．经过大家一番苦心孤诣的开导，他终于明白了团队精神的重要性。
C．由于厂家对产品的设计和生产吹毛求疵，因而产品销路越来越好。
D．魅力的画面与逼真的音响效果相得益彰，使这部影片达到很高的艺术水平。
4．下列各句中，加点成语使用不正确的一项是（）A．一些西方媒体别有用心地宣称“中印会陷入冷战”，这是西方有意渲染和扩大中印在地缘政治方面的矛盾，有挑．拨离间．．．的嫌疑。
B．讲好中国故事，不能一味地选择富丽堂皇．．．．的镜头或夸张的语言来表现中国的繁荣富强，而是要用历史的眼光讲述中国人的时代变迁及其主题。
C．博鳌亚洲论坛2019年年会即将举行，而博鳌各主要路段被装扮一新，路面干干净净，路旁三角梅等花朵鲜艳绽放，彩旗花枝招展．．．．，迎接博鳌亚洲论坛年会的到来。
重庆市八中2024届中考联考语文试卷含解析
重庆市八中2024届中考联考语文试卷考生请注意：1．答题前请将考场、试室号、座位号、考生号、姓名写在试卷密封线内，不得在试卷上作任何标记。
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考试结束后，请将本试卷和答题卡一并交回。
一、积累与运用1．下列文学常识及对文章的理解表述正确．．的一项是A．《范进中举》节选自《儒林外史》，它是我国一部长篇章回体讽刺小说，主要描写封建社会后期知识分子及官绅的活动和精神面貌。
B．《从百草园到三味书屋》是一篇描写作者童年生活的散文，其中成长读书阶段所遇的启蒙老师古板无趣，令作者心生厌恶。
C．《我的叔叔于勒》的作者是莫泊桑，是法国十九世纪后半期著名的批判现实主义作家。
代表作品有《项链》《变色龙》D．《爱莲说》的作者周敦颐，字茂叔，世称“濂溪先生”，南宋哲学家。
该文表达了作者不与世俗同流合污的高尚品格和对追名逐利世风的鄙弃。
2．下列各句中加点的成语，使用有误的一项是（）A．有自知之明．．．．的人，犯了错误也不可怕，他会从中吸取教训。
B．王伟同学参加全国中学生作文大赛获得一等奖，他高兴得涕泗横流．．．．。
C．父亲郑重其事．．．．地带着两个女儿和女婿。
向那个衣服褴褛的年老水手走去。
D．伏尔泰活过了八十四年，经历了登峰造极．．．．的君主政体和曙光初现的革命年代。
3．选出下列关于课外名著的说法有误的一项A．中国第一部歌颂农民起义的长篇章回小说《水浒》通过写众多草莽英雄不同的人生经历和反抗道路，鲜明地表现了“官逼民反”的主题。
B．冰心的《骆驼祥子》讲述的是一个普通的人力车夫的故事。
它通过祥子这个人物的变化，无情地批判了祥子所处的那个社会——它不让好人有出路。
C．善于说故事，善于塑造人物，充满天马行空的想象和大胆奇特的夸张，是《西游记》这部小说的三大成功之处。
D．《钢铁是怎样炼成的》以主人公保尔·柯察金的生活经历为线索，展现了从1915到1930年前后苏俄广阔的历史画面和人民的艰苦卓绝的斗争生活。