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九年级道法历史试卷及答案

九年级道法历史试卷及答案专业课原理概述部分一、选择题1. 以下哪个朝代实行了科举制度？A. 汉朝B. 唐朝C. 宋朝D. 明朝2. 道德经的作者是谁？A. 孔子B. 老子C. 庄子D. 孟子3. 以下哪个事件标志着中国进入半殖民地半封建社会？A. 鸦片战争B. 戊戌变法C. 辛亥革命D. 五四运动4. 以下哪个是秦始皇统一六国后采取的措施？A. 分封制B. 郡县制C. 井田制D. 土地私有制5. 中国古代四大发明不包括以下哪个？A. 指南针B. 火药C. 印刷术D. 电灯二、判断题1. 《论语》是孔子的著作。

（×）2. 秦始皇是汉朝的开国皇帝。

（×）3. 郑和下西洋最远到达了非洲东海岸。

（√）4. 儒家思想主张以法治国。

（×）5. 《三国演义》是中国古代四大名著之一。

（√）三、填空题1. 儒家学派的创始人是______。

2. 中国古代的“丝绸之路”起点是______。

3. 中国古代第一部纪传体通史是______。

4. 中国古代科举制度正式形成于______朝。

5. 中国古代的“四大发明”包括指南针、火药、印刷术和______。

四、简答题1. 简述秦始皇统一六国的意义。

2. 简述儒家思想的主要观点。

3. 简述《红楼梦》的主要情节。

4. 简述“三国鼎立”的形成过程。

5. 简述“文景之治”的特点。

五、应用题1. 请列举三个中国古代著名的历史事件，并简要说明它们的意义。

2. 请列举三个中国古代著名的科技发明，并简要说明它们的影响。

3. 请列举三个中国古代著名的思想家，并简要说明他们的主要思想。

4. 请列举三个中国古代著名的文学作品，并简要说明它们的主题。

5. 请列举三个中国古代著名的艺术形式，并简要说明它们的特点。

六、分析题1. 分析中国古代封建社会的特点及其影响。

2. 分析中国古代科举制度的作用及其影响。

七、实践操作题1. 请设计一个关于中国古代历史的主题展览，并简要说明展览的内容和目的。

九年级化学答题卡

九年级化学答题卡一、化学基本概念。

1. 物质的变化和性质。

知识点。

物理变化：没有生成其他物质的变化，例如水的三态变化（固态冰融化成液态水、液态水蒸发成气态水蒸气等），只是物质的状态发生了改变，物质本身的组成和性质没有变化。

化学变化：生成了其他物质的变化，如铁生锈，铁（Fe）与空气中的氧气（O₂）和水（H₂O）反应生成了铁锈（主要成分是Fe₂O₃·xH₂O），有新物质生成。

物理性质：物质不需要发生化学变化就表现出来的性质，如颜色、状态、气味、熔点、沸点、硬度、密度等。

例如，氧气是无色无味的气体，这是它的物理性质。

化学性质：物质在化学变化中表现出来的性质，如可燃性、氧化性、还原性、酸碱性等。

例如，氢气具有可燃性，能在氧气中燃烧生成水，这是氢气的化学性质。

题目解析。

例：下列变化属于化学变化的是（）A. 酒精挥发。

B. 冰雪融化。

C. 食物腐烂。

D. 灯泡发光。

解析：A选项酒精挥发是酒精由液态变为气态，只是状态变化，属于物理变化；B 选项冰雪融化是水由固态变为液态，属于物理变化；C选项食物腐烂是食物与空气中的氧气等发生反应，生成了新物质，属于化学变化；D选项灯泡发光是电能转化为光能，没有新物质生成，属于物理变化。

所以答案是C。

2. 化学实验基本操作。

知识点。

药品的取用：固体药品：块状固体用镊子取用，操作是“一横二放三慢竖”，例如取用大理石；粉末状固体用药匙或纸槽取用，操作是“一斜二送三直立”，如取用碳酸钠粉末。

液体药品：较多量液体用倾倒法，瓶塞倒放，标签向着手心，瓶口紧挨试管口；少量液体用胶头滴管吸取和滴加，胶头滴管要垂直悬空在容器口上方，不能伸入容器内，更不能接触容器壁；定量液体用量筒量取，读数时视线要与量筒内液体凹液面的最低处保持水平。

物质的加热：给试管中的液体加热，液体体积不能超过试管容积的1/3，试管夹夹在试管的中上部，用酒精灯外焰加热，先预热，再集中加热。

给试管中的固体加热，试管口要略向下倾斜，防止冷凝水倒流使试管炸裂。

2024北京人大附中九年级(下)开学考语文(教师版)

2024北京人大附中初三（下）开学考语文一、基础·运用(共15分)2024年新春，学校开展“新春奋进，鱼跃龙门”综合实践活动，请你完成下列任务。

（一）春节是我国的传统节日，有着深厚的文化和浓浓的情味。

下面是一位同学查的关于“年”的资料，阅读这段文字，完成1-5题。

(共9分)“爆竹声中一岁除，春风送暖入屠苏。

”在大诗人王安石笔下，新年元日热闹欢乐万象更新的蓬勃景象呈现在我们眼前。

春节起源于殷商时期年头岁尾的祭神祭祖活动，是中国最盛大、最热闹、最重要的一个古老传统节日。

在中国民间，传统意义上的春节从腊月二十三或二十四的祭灶，一直到正月十五，其中以除夕和正月初一为高潮。

在春节期间，中国的汉族和一些少数民族都要举行各种活动以示庆祝。

祭(sì) 祖神、祭奠祖先、迎禧接福、祈．求丰年是春节活动的主要内容。

陆游《除夜雪》中的“半盏屠苏犹未举，灯前小草写桃符”一句，展现的就是古人过大年时饮屠苏酒以驱邪避(wēn) 疫、写桃符以祈福灭祸的习俗。

各地过年的习俗虽然有所不同，但主题都是相同的_①_那就是辞旧迎新。

《大学》有言:“苟日新，日日新，又日新。

”可见，“新”自古就是受到肯定和赞美的，只有求新求变不断前行，才能走出困境，焕发生机。

因此，春节庆贺也在表达着中华民族独有的情怀和价值观。

1.根据拼音将汉字写在答题纸田字格内。

(1分)祭(sì) (wēn) 疫2.给加点字注音和①处填写的标点，全都正确的一项是(2分)A.祈(qí )求冒号B.祈(qí)求逗号B.祈(qǐ )求冒号 D.祈(qǐ)求逗号3.下面与文段有关的文学和文化常识，有误的一项是(2分)A.王安石，字介甫，号半山，世人又称王荆公，北宋著名政治家、文学家，他与欧阳修、苏轼、曾巩等人同列“唐宋八大家”。

B.商代前期多次迁都，到盘庚在位时，定都于殷，并固定下来，从此商朝也称殷朝或殷商。

著名的甲骨文就是诞生于这个时期。

2020-2021年初三上学期期中考试英语(试卷+答题纸+答案)

220-2021学年度第一学期期中考试九年级英语试题（满分：140分考试时间：120分钟）第I卷选择题(共80分)一、听力（共20小题，每小题1分，计20分）A. 听对话回答问题。

本部分共有10道小题，每小题你将听到一段对话，每段对话听两遍。

( ) 1What does Miss Jones teach?A. B C.( ) 2. What sport does Ricky like to watch?A. B. C.( ) 3. How will Frank go from Beijing to Guangzhou?A. B. C.( ) 4.What time did the man say they should meet?A. B. C.( ) 5. What does Simon tell Suzy?A.Suzy has a show that eveningB.Simon can get some money from the show.C.Her favourite singer has a show that evening.( ) 6. What does the doctor explain to the woman?A.She has a blood cancerB.There is too little iron in her blood.C.She has broken a bone.( ) 7. Where will Nick get his prize?A.At his school.B. On television.C. In an online programme.( ) 8. Who is the woman shopping for ?A. Her son.B. HerselfC. Sam.( ) 9. What does the woman ask the man to do?A. Think before speaking.B. Say sorry to her.C. Say something impolite.( ) 10. What does the man want to know about the woman?A. Her height.B. Her weight.C. Her age.B. 听对话和短文答题。

2023-2024学年第二学期九年级质量调研语文试卷(附答案)

2023-2024学年第二学期九年级质量调研语文试卷(满分：150分，完成时间：100分钟）考生注意：1.本卷共有21题。

2.请将所有答案写在答题纸的指定位置上，写在试卷上一律不计分。

一、文言文（35分）（一）默写与运用（13分）1.满面尘灰烟火色，。

（白居易《卖炭翁》）2. ，笑问客从何处来。

（贺知章《回乡偶书》<其一>）3.予独爱莲之出淤泥而不染，，中通外直……（周敦颐《爱莲说》）4.许多志士仁人在面对“生”与“义”的选择时，常常把孟子《鱼我所欲也》中的“，”作为自己选择的标准。

（二）阅读下面的诗文，完成第5—10题（22分）【甲】赤壁折戟沉沙铁未销，自将磨洗认前朝。

东风不与周郎便，铜雀春深锁二乔。

【乙】曹刿论战十年春，齐师伐我。

公将战，曹刿请见。

其乡人曰：“肉食者谋之，又何间焉？”刿曰：“肉食者鄙．，未能远谋。

”乃入见。

问：“何以战？”公曰：“衣食所安，弗敢专也，必以分人。

”对曰：“小惠未遍，民弗从也。

”公曰：“牺牲玉帛，弗敢加也，必以信。

”对曰：“小信未孚，神弗福也。

”公曰：“小大之狱，虽不能察，必以情。

”对曰：“忠之属也。

可以一战。

战则请从。

”公与之乘，战于长勺。

公将鼓之。

刿曰：“未可。

”齐人三鼓。

刿曰：“可矣。

”齐师败绩。

公将驰之。

刿曰：“未可。

”下视其辙，登轼而望之，曰：“可矣。

”遂逐齐师。

既克，公问其故。

对曰：“夫战，勇气也。

一鼓作气，再而衰，三而竭。

彼竭我盈，故克之。

夫大国，难测也，惧有伏焉。

吾视其辙乱，望其旗靡，故逐之。

”【丙】宋小坡退敌宋小坡侍御督学秦中，值教匪流毒①正酷，案临巩昌，距府城数十里外。

郡守驰报贼信，请勿至，小坡毅然往。

出廉俸二千金，募回兵为防御计。

贼侦知，遁去，城藉②无恙。

前任陈远山闻贼到汉中，即他避，生童③随散，多为贼所戕④。

远山闻之，郁郁．．成疾，卒于任。

可见临．大事，存乎胆识，胆识不足，而欲以济事也，难哉。

【注释】①教匪流毒：指清朝时的白莲教之乱。

2023-2024学年浙江省温州市鹿城区九年级(上)期末科学试题及答案

浙江省温州市鹿城区2023-2024学年九年级（上）期末科学能力检测提优卷亲爱的同学:欢迎参加考试!请你认真审题，积极思考,细心答题，发挥最佳水平。

答题时，请注意以几点:1.全卷共8页,有四大题，33小题。

全卷满分160分.考试时间120分钟。

2.答案必须写在答题纸相应的位置上，写在试题卷、草稿纸上均无效。

3.答题前，认真阅读答题纸上的《注意事项》，按规定答题。

4.本卷中g 取10Nkg一.选择题(本题共15小题，每题只有一个选项符合题意，每小题3分，共45分)1.下列变化中属于化学变化的是()A．榨取果汁B．粉碎废纸C．切割玻璃D．燃放烟花2.《易经》记载：“泽中有火”“上火下泽”。

这是对甲烷气体在湖泊池沼水面上起火现象的描述。

下列有关甲烷的叙述，正确的是（）A．甲烷的化学式为C 2H 4B．甲烷属于有机物C．甲烷燃烧只生成水D．甲烷与空气的混合物遇火一定不会发生爆炸3.小金是一名发育正常的九年级学生，下面是与他有关的一些数据，你认为合理的是（）A.他走上楼梯的功率约为1000WB.他走上楼梯时对地面的压强约为1000PaC.他从1楼走到4楼教室的过程中克服重力做功1000JD.他把科学课本从地上捡起来放到桌上，对课本做功约为3J4.如图所示，对于图片中所描述的物理过程，下列分析中正确的是（）A.图甲，厚玻璃内的空气被压缩时，空气的内能减少B.图乙，瓶子内的空气推动塞子跳起时，空气的内能增大C.图丙，试管内的水蒸气推动塞子冲出时，水蒸气的内能减少D.图丁，汽缸内的气体推动活塞向下运动时，气体的内能增大5.小金将小球竖直向上抛出，小球先上升后下落，不计空气阻力。

小球从离开手后到落回手中之前，此过程中能量变化的分析，正确的是（）A.动能先增大后减小B.势能先减小后增大C.机械能先减小后增大D.机械能保持不变6.将过量盐酸加入一定质量的氢氧化钠溶液中，充分反应后得到溶液X。

下列现象或事实描述不合理．．．的是（）A.溶液X 显酸性B.向X 滴加少量硝酸银溶液无沉淀生成C.向X 滴加少量硫酸铜溶液无沉淀生成D.向X 加入锌粒有气体生成7.非洲旱季，常用Hippo roller（中间有转轴的塑料桶）运水。

人教版九年级英语练习题(打印版)

人教版九年级英语练习题（打印版）### 人教版九年级英语练习题（打印版）#### 一、词汇运用（Vocabulary Usage）根据题目所给单词的首字母提示，填写正确的单词。

1. The teacher asked the students to keep their desks t______.2. We should respect the c______ of others.3. The boy is very c______ about his appearance.4. It's important to develop good h______ such as eating healthily and exercising regularly.5. The p______ of the book is too high for me to afford.#### 二、完形填空（Cloze Test）阅读下面的短文，从A、B、C、D四个选项中，选择一个最佳选项填入空白处。

In a small village, there lived an old man who was very kind. One day, he found a poor boy on the street. The boy washungry and cold. The old man took him home and gave him some food and warm clothes.The boy was very thankful and decided to stay with the old man. He helped the old man with his housework and they became good friends. The old man was happy to have someone to talkto and the boy was happy to have a home.Years later, the boy became a successful businessman. He never forgot the kindness of the old man and often visited him. One day, the old man fell ill and the boy took care of him until he got better.The story tells us that kindness can change a person's life. It also shows us the importance of giving and sharing.6. The old man found the boy on the street because the boy was ______.A) richB) hungryC) happyD) healthy7. The boy decided to stay with the old man because ______.A) he was afraidB) he was lonelyC) he was gratefulD) he was bored8. The boy helped the old man with his ______.A) businessB) houseworkC) cookingD) gardening9. The old man was happy because ______.A) he became richB) he was healthyC) he had someone to talk toD) he had a big house10. The boy became a successful businessman and he ______.A) forgot the old manB) visited the old manC) helped other poor peopleD) built a big house#### 三、阅读理解（Reading Comprehension）Read the passage below and answer the questions that follow.Passage:Tom's best friend, Jerry, moved to another city last year. They used to play football together every weekend. Tom missed Jerry very much and decided to write him a letter. In the letter, Tom told Jerry about his new school and his new friends. He also wrote about the football matches he had been playing in since Jerry left.Questions:11. Who is Tom's best friend?A) JerryB) BobC) MikeD) Jack12. What did Tom and Jerry use to do together?A) Play basketballB) Play footballC) Go swimmingD) Go hiking13. What did Tom do after Jerry moved away?A) He wrote Jerry a letter.B) He forgot about Jerry.C) He found a new best friend.D) He joined a new football team.14. What did Tom write about in his letter to Jerry?A) His new school and friends.B) His new hobbies.C) His new job.D) His new house.15. What can we infer from the passage?A) Tom and Jerry are no longer friends.B) Tom is not happy with his new school.C) Tom misses Jerry and wants to keep in touch.D) Jerry is not interested in football anymore.#### 四、书面表达（Written Expression）Write a short passage about your weekend plan. (60 words)_____________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ ____________________注意：请在答题纸上作答，并确保字迹清晰。

译林版牛津初中英语九年级上册第一学期10月第一次月考九年级英语试卷、答题纸及参考答案

译林版牛津初中英语九年级上册第一学期10月第一次月考九年级英语试卷所有选择题一律涂卡，用2B涂卡笔正确填涂，其余各题一律做在答题纸上！（总分120分，考试时间90分钟）一、单项填空(每小题1分，计15分)1. The Math teacher found _________ was quite clever _________ him to work out the problem.A. it; forB. that; forC. that; ofD. it; of2. It’s hard work. I require two children ___________ me.A. to helpB. helpC. helpingD. helps3. Not only Mr. and Mrs. Green but also their daughter ___________ Beijing twice.A. have gone toB. have been toC. has gone toD. has been to4. President Xi Jinping calls on Chinese people to ___________ all the food each meal.A. eat upB. use upC. pick upD. cut up5. Life is like riding a bicycle. To keep your ___________, you must keep moving.A. promiseB. positionC. balanceD. ability6.We're not sure if it ___________ tomorrow．If it ___________，we won't go hiking．A．will rain；rains B．will rain；will rainC．rains；rains D．rains；will rain7. ---The song Where did the time go ___________ the old days and the love of family.---Sure. It’s my favourite song.A. reminds us ofB. helps us outC. lets us downD. cheers us up8. People ___________ pale skin look good ___________ yellow and pink.A. have; inB. with; inC. have; onD. with; on9. Kitty felt ______ nervous because of the English competition and couldn’t sleep well last night.A. a little ofB. a bit ofC. a little bitD. a bit little10. The born artist devoted all the time he had ___________ for something better or different.A. searchB. searchedC. to searchD. to searching11. As a driver, you can’t be ___________ careful on the road.A. soB. veryC. moreD. too12. Football is a popular sport. _________ Tom _________ Mike is interested in football matches.A. Not only; but also.B. Neither; norC. Both; andD. Either; or13. --- It is said that one’s star sign decides his personalities, is it true?--- _______________. Just for fun.A. That’s not the case.B. You are wrong. C Why not ? D. Not at all.14. The film is boring, ___________ the actors have perfect acting skills.A. andB. butC. orD. so15. ---I promise I will work harder this year, Miss Lin.---Well, just as the saying goes, “_______________”. I do hope you will act soon.A. A miss is as good as a mile.B. Many hands make light work.C. The early birds catch the worms.D. Actions speak louder than words.二、完形填空(每小题1分，计15分)Your friends might be ___16___ England or may be just next-door neighbors, but they are all just a few clicks away. Life has changed a lot for millions of young people ___17___ like to make friends online around the world. Whether you use the chat room, QQ or MSN, you are in this group."I don't often ___18___ my parents ___19___ grandparents, but I talk a lot with my friends on QQ," said Tears in Hand, an online name used by a girl student in China.QQ is the biggest messaging service in China. A report from the company which developed QQ ___20___ that 4 million people used it one Saturday night in October. And probably Tears in Hand was one of them. "I log in on Friday nights, Saturdays or Sundays, when I feel ___21___. I usually spend about ten hours ___22___ online every week," she said. "But I never talk with___23___, especially boys or men." Even though she likes chatting, she is careful about making friends with strangers online ___24___ she knows that she shouldn't believe in the strangers online ___25___.Many people like to ___26___ online friends when they feel they have got to know someone very well. Tears in Hand once met one online friend face to face and they went to a football match together.A boy ___27___ Blue Sky dislikes QQ users. "I ___28___ chatted on QQ in the past, but I found most people are talking about foolish things. Now I only chat in English on MSN with my Japanese or American friends because I want to learn more about foreign cultures," he said. So he spends very ___29___ time chatting on QQ and he thinks it's a waste of time and money. He believes that friends in real life are ___30___ than those online ones, and making friends with people around is a good choice.16. A. in B. at C. on D. under17. A. what B. which C. who D. whom18. A. talk B. talk with C. discuss D. discuss about19. A. and B. but C. or D. so20. A. says B. talks C. speaks D. tells21. A. amazed B. bored C. amazing D. boring22. A. to chat B. chats C. chatting D. chatted23. A. teachers B. friends C. classmates D. strangers24. A. because B. so C. though D. but25. A. angrily B. easily C. happily D. carefully26. A. thank B. prevent C. meet D. offer27. A. is named B. names C. naming D. named28. A. never B. sometimes C. seldom D. hardly29. A. many B. much C. few D. little30. A. important B. less important C. more important D. the most important三、阅读理解(每小题2分，计30分)(A)I had two friends. I asked them how they had changed since they came to our middle school. And here are their answers.31. Who always encourages Robin after he came to the middle school?A. His teachers.B. His friends.C. His parents.D. His classmates.32. The underlined word “encourage”means “_________ ”in Chinese.A. 告诫B. 嘲笑C. 抱怨D. 鼓励33. Why did Dick’s father do exercise with him?A. Because he wanted to lose weight.B. Because he wanted his son to be healthy.C. Because he worried that his son would be laughed at at school.D. Because he didn’t want his son to be lonely.(B)Chris Rock was born in the state of South Carolina in the United States. When he was a child，his family moved，and he grew up in a poor area in Brooklyn，New York.As a teenager，Rock left high school and started telling jokes in comedy clubs in New York City，Even at age 18，Chris Rock was very funny. He told jokes about his family （his parents were very strict），and about growing up in Brooklyn in the 1980s.Many of his jokes were also about high school，which Rock says was terrible.Famous comedians went to see Rock's performances. One comedian （Eddie Murphy）helped him get work on television and in the movies. Chris Rock still acts in movies，but he does not want to be a serious actor. For him，comedy is more important. It makes people laugh，but it can also make people think.Today，Chris Rock still does live comedy shows around the world. He also created a TVshow called "Everybody Hates Chris. " It is about his teenage years growing up and going to school in Brooklyn. In 2006，it was considered as one of the best comedy shows on American television.34.According to the text，Chris Rock doesn't tell jokes about_________.A. his familyB. movie industryC. growing upD. going to school35.Chris Rock thinks comedy is more important because_________.A. it makes him a starB. it improves his actingC. it helps him work on televisionD. it makes people laugh and think36.Everybody hates Chris was the name of_________.A. a popular TV show in the USAB. a famous book written by RockC. a well﹣known club in Now YorkD. a live comedy show around the world37.What does the underlined word "comedians" mean in Chinese？_________.A. 编剧B. 导演C. 喜剧演员D. 悲剧演员(C)What is the oldest drink in the world? The answer might be tea．Thousands of years ago, Chinese people made this special drink．Today, it is part of people's daily lives not only in China, but also in the rest of the world．In 2019, the United Nations announced May 21 to be International Tea Day．The purpose is to remind people of tea's value．The cultural value of tea is in old traditions and daily habits．In China, people use best--quality tea when receiving important guests．British people are well-known for their afternoon tea, while in Russia, the beautiful teapot has become a symbol of Russian culture．The more people keep drinking tea as a habit and tradition, the more economically(在经济上) important tea becomes. According to Xinhua, China comes first in the world in total tea-planting area and produces the most tea every year．About 115 million Chinese people work in this rapidly growing industry．In many poor areas, people live on tea industry．To attract more customers, tea companies are trying to give the old drink a new look．The Chinese tea brand Xiao Guan Tea uses fashionable designs to make its tea more attractive．Hey Tea, a Guangdong based brand(品牌) that has received lots of clicks online, has won over many young tea drinkers with its special taste．It does seem that a small cup of tea connects everything —farmers and customers, tradition and fashion．Tea is also of value in keeping people healthy．Tea leaves can help lower the risk of cancer and heart disease．What's more, tea helps us lose weight and keeps our mind clear．But doctors advise that we should not drink too much tea．Otherwise, we might not fall asleep at night, as tea can make us excited．38．When is International Tea Day according to the text?A．On March 20．B．On March 21．C．On May 20．D．On May 21．39．The sentence “In Japan, tea-serving has developed into a kind of art known as Chado．”canmost probably be put at the end of_________．A．Paragraph 2 B．Paragraph 3 C．Paragraph 4 D．Paragraph 5 40．It can be learned from the text that_________．A．Russia is famous for its afternoon teaB．China has the largest tea-planting areaC．tea keeps us away from all diseasesD．Hey Tea is successful because of its look41．The purpose of writing this text is to_________．A．encourage us to buy and drink more teaB．tell us tea is the oldest drink in the worldC．describe how important tea is in many waysD．show how Chinese people made tea popular(D)Why are dogs our best friends? Maybe because they can understand our words much better than we think, according to a study in Hungary. The study shows that dogs understand not only what we say, but also how we say it. “The results are very exciting and surprising，” says Attila Andics, the lead researcher from a University in Budapest.For the study, the researchers first trained 13 dogs for months. The dogs had to sit quietly inside machines so that the researchers could check their brain activity. Then the researchers put headphones on dogs and played people's voices to them. There were four different voices. Some were positive words, such as “well done”. Some were negative words like “not good”. The words were also in different tones(音调). Some were positive, some were neutral(中立的), and some were negative.Brain scans(扫描) showed the dogs could recognize words, as well as the tone of words, much like people do. The positive words with a positive tone brought the strongest activity in their brains' reward centers (反应中枢). “It shows that for dogs, a nice phrase can work very well as a reward, but it works best if both words and tones match，” said Andics.They also found that dogs deal with meaningful words with the left side of the brain and tones with the right. People's brains work in the same way.Andics said it gave us a new understanding of the language. That is to say, not only humans understand the meaning in words, but also other species(物种) do too.42. For the study, researchers did all of the following EXCEPT_________.A. they made dogs sit inside machinesB. they played with the dogsC. they scanned the dogs' brains.D. they played people's voices to them43. The third paragraph mainly tells us_________.A. the results of the studyB. the process of the studyC. the reasons of the studyD. the advantages of the study44. For both dogs and humans, which side of brain deals with tones?A. Left side for both dogs and humans.B. Left side for dogs and right side for humans.C. Right side for both dogs and humans.D. Right side for dogs and left side for humans.45. What is the main idea of the passage?A. Dogs are humans' best friends.B. Dogs are talented in learning humans' language.C. Dogs can understand the meaning in words.D. Dogs can also learn humans' language.四、词汇(46-50每小题2分，51-60每小题1分，计20分)A) 选用方框内的单词或词组填空，其中有一个单词或词组是多余的。

上海市虹口区2023-2024学年九年级上学期期末数学试题(一模)(解析版)

2023-2024学年度初三年级第一次学生学习能力诊断练习数学练习卷（一模）（满分150分，时间100分钟）注意：1．本练习卷含三个大题，共25题；2．答题时，务必按答题要求在答题纸规定的位置上作答，在草稿纸、本练习卷上答题一律无效；3．除第一、二大题外，其余各题如无特别说明，都必须在答题纸的相应位置上写出证明或计算的主要步骤．一、选择题（本大题共6题，每题4分，满分24分）【下列各题的四个选项中，有且只有一个选项是正确的，选择正确项的代号并填涂在答题纸的相应位置上．】1. 下列函数中，y 是关于x 的二次函数的是（）A. 21y x =−B. 21y x =C. 221y x =−D. 321y x =−【答案】C【解析】【分析】本题考查了二次函数的定义，形如2(y ax bx c a =++、b 、c 为常数, 0)a ≠ 的函数，叫二次函数，对照函数的解析式，根据函数的定义逐一判断即可．【详解】A ．21y x =−是一次函数，不是二次函数，故选项A 不符合题意；B ．21y x =不是二次函数，故选项B 不符合题意； C ．221y x =−是二次函数，故选项C 符合题意；D ．321y x =−不是二次函数，故选项D 不符合题意．2. 将抛物线23y x =−向左平移4个单位长度，所得到抛物线的表达式是（）A. ()234y x =−+B. ()234y x =−−C. 234y x =−+D. 234y x =−−【答案】A【解析】【分析】本题考查的是二次函数的图象与几何变换，根据“左加右减，上加下减”的法则解答即可．【详解】解：将抛物线23y x =−向左平移4个单位长度，得到抛物线是23(4)y x =−+．3. 如图，在Rt ABC △中，已知90C ∠=︒，3cos 4A =，3AC =，那么BC 的长为（）A. 7B. 7C. 4D. 5【答案】A【解析】【分析】本题考查了解直角三角形，勾股定理，正确理解锐角三角函数的定义是解决问题的关键．先根据余弦的定义计算出4AB =，然后利用勾股定理计算出BC 的长．【详解】解：∵90C ∠=︒， ∴3cos 4AC A AB ==， ∵3AC =，∴4AB =， ∴2222437BC AB AC ，故选：A ．4. 如图，一条细绳系着一个小球在平面内摆动．已知细绳从悬挂点O 到球心的长度为50厘米，小球在左、右两个最高位置时，细绳相应所成的角∠AOB 为40°，那么小球在最高位置和最低位置时的高度差为（）A. ()5050sin 40−︒厘米B. ()5050cos 40−︒厘米C. ()5050sin 20−︒厘米D. ()5050cos 20−︒厘米【答案】D【解析】【分析】此题考查了解直角三角形的应用，三角函数的基本概念，当小球在最高位置时，过小球作小球位置最低时细绳的垂线，在构建的直角三角形中，可根据偏转角的度数和细绳的长度，求出小球最低位置时的铅直高度，进而可求出小球在最高位置与最低位置时的高度差．【详解】解：如图：过A 作AC OB ⊥于C ，Rt OAC 中，50OA =厘米，40220AOC ∠=︒÷=︒，cos2050cos20OC OA ∴=⋅︒=⨯︒．5050cos2050(1cos20)CD OA OC ∴=−=−⨯︒=−︒（厘米）．故选：D ．5. 如图，点G 是ABC 的重心，GE AC ∥交BC 于点E ．如果12AC =，那么GE 的长为（）A. 3B. 4C. 6D. 8【答案】B【解析】【分析】本题考查的是重心的概念和性质、相似三角形的判定和性质，掌握三角形的重心是三角形三条中线的交点，且重心到顶点的距离是它到对边中点的距离的2倍是解题的关键．连接BG 并延长交AC 于D ，根据点G 是ABC 的重心，得到1112622CD AC ==⨯=，23BG BD =，根据相似三角形的判定和性质即可得到结论．【详解】解：连接BG 并延长交AC 于D ，∵点G是ABC的重心，∴1112622CD AC==⨯=，23BGBD=，∵GE AC∥，∴BEG BCD∽，∴BG EG BD CD=，∴236EG =，∴4GE=，故选：B．6. 如图，四边形的顶点在方格纸的格点上，下列方格纸中的四边形与已知四边形相似的是（）A. B. C. D.【答案】D【解析】【分析】本题考查了相似多边形的性质，相似三角形的判定与性质，勾股定理，如果两个四边形的四条边对应成比例，且四个角对应相等，那么这两个四边形相似，据此求解即可．【详解】解：设每个小正方形的边长为1，则已知四边形的四条边分别为12，25．选项A2，2，210，两个四边形的四条边对应不成比例，不符合题意；选项B中的四边形的四条边分别为25134，两个四边形的四条边不是对应成比例，故选项B中的四边形与已知四边形不相似，不符合题意；选项C中的四边形的四条边分别为25134，两个四边形的四条边不是对应成比例，故选项C 中的四边形与已知四边形不相似，不符合题意；选项D 中的四边形的四条边分别为2，2，4，25将已知四边形表示为四边形ABCD ，将选项D 中的四边形表示为EFGH ．如图，连接AC 、EG ，则5AC =25EG =．在ABC 与EFG 中，12AB BC AC EF FG EG ===， ABC EFG ∴∽，BAC FEG ∴∠=∠，B F ∠=∠，ACB EGF ∠=∠．在ADC △与EHG 中，12AD DC AC EH HG EG ===， ADC EHG ∴∽，DAC HEG ∴∠=∠，D H ∠=∠，ACD EGH ∠=∠，BAD FEH ∴∠=∠，B F ∠=∠，DCB HGF ∠=∠，D H ∠=∠，又12AB BC AD DC EF FG EH HG ====， ∴四边形ABCD ∽四边形EFGH ．故选：D ．二、填空题（本大题共12题，每题4分，满分48分）7. 已知:3:2x y =，那么():x y x −=____．【答案】1:3【解析】【分析】本题考查了比例的性质，表示出y 是解题的关键．先用x 表示出y ，再代入比例式进行计算即可得【详解】解：∵:3:2x y =， ∴23y x =， ∴()211:333x y x x x x x x ⎛⎫−=−== ⎪⎝⎭:::，故答案为：1:3．8. 如果向量a 、b 和x 满足()2a x a b −=−，那么x =____．【答案】2a b −+##2b a −【解析】【分析】本题考查的是平面向量，正确利用等式的性质是解题的关键．根据等式的性质变形，得到答案．【详解】解：()2a x a b −=−，∴2x a b −=−，∴2x a b =−+，故答案为：2a b −+．9. 已知抛物线()213y a x =−+开口向下，那么a 的取值范围是____．【答案】1a >##1a <【解析】【分析】本题考查了二次函数图象与系数的关系：二次项系数a 决定抛物线的开口方向和大小．当0a >时，抛物线开口向上；当a<0时，抛物线开口向下．根据二次函数的性质可知，当抛物线开口向下时，二次项系数10a −<．【详解】解：抛物线2(1)3y a x =−+的开口向下，10a ∴−<，解得，1a >．故答案为：1a >．10. 如果点()2,1A 在抛物线()21y x m =−+上，那么m 的值是____．【答案】0【解析】【分析】本题考查了二次函数图象上点的坐标特征，根据次函数图象上点的坐标满足二次函数解析式，把点(2,1)A 代入2(1)=−+y x m 即可求出m ．【详解】解：点(2,1)A 在抛物线2(1)=−+y x m 上，21(21)m ∴=−+，解得0m =，11. 将抛物线y ＝2x 2平移，使顶点移动到点P （﹣3，1）位置，那么平移后所得新抛物线的表达式是_____．【答案】y ＝2（x +3）2+1【解析】【分析】由于抛物线平移前后二次项系数不变，然后根据顶点式写出新抛物线解析式．【详解】抛物线y ＝2x 2平移，使顶点移到点P （﹣3，1）的位置，所得新抛物线的表达式为y ＝2（x+3）2+1．故答案为y ＝2（x+3）2+1【点睛】本题考查了二次函数图象与几何变换：由于抛物线平移后的形状不变，故a 不变，所以求平移后的抛物线解析式通常可利用两种方法：一是求出原抛物线上任意两点平移后的坐标，利用待定系数法求出解析式；二是只考虑平移后的顶点坐标，即可求出解析式．12. 已知点()13,A y −和()21,B y 都在抛物线()2212y x =−−上，那么1y 和2y 的大小关系为1y ____2y （填“>”或“<”或“=”）．【答案】>【解析】【分析】本题考查二次函数图象上点的坐标特征，根据图象上点的坐标适合解析式将点A ，B 坐标代入解析式求解．【详解】解：将1(3,)A y −，2(1,)B y 代入22(1)2y x =−−得130y =，22y =−，12y y ∴>．故答案为：>．13. 已知抛物线2y x bx c =−++如图所示，那么点(),P b c 在第____象限．【答案】二【分析】本题主要考查了二次函数的性质，根据抛物线的开口方向和对称轴位置确定b 的符号，抛物线与y 轴的交点确定c 的符号，即可确定点(,)P b c 所在的象限．【详解】解：由抛物线的图象得，022b b a −=<，0c >， 0b ∴<，的(,)P b c ∴在第二象限．故答案为：二．14. 一个三角形框架模型的边长分别为3分米、4分米和5分米，木工要以一根长6分米的木条为一边，做与模型相似的三角形，那么做出的三角形中，面积最大的是____平方分米．【答案】24【解析】【分析】本题考查相似三角形的性质，勾股定理的逆定理，由相似三角形的判定：三组对应边的比相等的两个三角形相似求出三角形最大的三边，根据勾股定理的逆定理判断新三角形是直角三角形，根据三角形的面积公式计算即可．【详解】解：当长是6分米的木条与三角形框架模型的边长最短的3分米一条边是对应边时，做出的三角形的三边最大，面积最大，设长是4分米，5分米的边的对应边的长分别是a 分米，b 分米，3:64:5:a b ∴==，8a ∴=，10b =，∴其他两条边的长分别是8分米，10分米，2226810+=，∴做出的三角形是直角三角形，直角边分别是6分米，8分米，∴做出的三角形的面积为168242⨯⨯=（平方分米）．15. 如图，已知AD EF BC ∥∥，2BC AD =，2BE AE =，AD a =，那么用a 表示EF =____．【答案】43a 【解析】【分析】本题考查了向量的运算、相似三角形的判定与性质，连接BD ，交EF 于点G ，先根据AD EF BC ∥∥求得12AE DF BE CF ==，EGB ADB ∽，DGF DBC ∽，根据相似三角形的性质可得23EG AD =，13GF BC =，即可得出43EF EG GF AD =+=，由此即可得．【详解】解：连接BD ，交EF 于点G ，∵AD EF BC ∥∥，2BE AE =， ∴12AE DF BE CF ==，EGB ADB ∽，DGF DBC ∽， 32EG BE AD AB ∴==，31GF DF BC DC ==， ∴23EG AD =，13GF BC =， 2BC AD =， ∴1233GF BC AD == ∴43EF EG GF AD =+= 4433EF AD a ∴==，故答案为：43a ． 16. 如图，在平行四边形ABCD 中，点F 是AD 上的点，2AF FD =，直线BF 与AC 相交于点E ，交CD 的延长线于点G ，若2BE =，则EG 的值为________．【答案】3【解析】【分析】本题考查了平行四边形的性质，平行线分线段成比例，设FD x =，则2AF x =，3AD x =，根据平行四边形的性质可得AD BC ∥，AB CD ∥，3AD BC x ==，根据平行线分线段成比例即可解决问题．【详解】解：设FD x =，由2AF FD =，则2AF x =，3AD x =，四边形ABCD 平行四边形，∴AD BC ∥，AB CD ∥，3AD BC x ==，2233AE AF x EC BC x ∴===， 23BE AE EG EC ∴==， 2BE =，223EG ∴=， 3EG ∴=，故答案为：3．17. 定义：如果以一条线段为对角线作正方形，那么称该正方形为这条线段的“对角线正方形”．例如，图①中正方形ABCD 即为线段AC 的“对角线正方形”．如图②，在Rt ABC △中，90C ∠=︒，3AC =，4BC =，点P 在边AB 上，如果线段PC 的“对角线正方形”有两边同时落在ABC 的边上，那么AP 的长是____．【答案】157【分析】本题考查了正方形的性质，相似三角形的判定和性质，熟练掌握相似三角形的判定和性质定理是解题的关键．根据正方形的性质和相似三角形的判定和性质定理即可得到结论．【详解】解：当线段PC 的“对角线正方形”有两边同时落在ABC 的边上时，设正方形的边长为x ，则4PE CE PD CD x BE x =====−，，∵PE AC ∥，∴BPE BAC ∽， ∴PE BE AC BC=， ∴434x x −=，解得：127x =， ∴127PD =，129377AD AC CD =−=−=， ∴22157AP AD PD =+=，故答案为：157． 18. 如图，在ABC 中，5AB AC ==，3tan 4B =，点M 在边BC 上，3BM =，点N 是射线BA 上一动点，连接MN ，将BMN 沿直线MN 翻折，点B 落在点B '处，联结B C '，如果B C AB '∥，那么BN 的长是____．【答案】6【分析】本题主要考查了三角形折叠与解直角三角形，过M 点作MG B C '⊥，FM AB ⊥，AH BC ⊥垂足分别为F 、G 、H ，由5AB AC ==，3tan 4B =，求出3AH =，4BH CH ==，9sin 5FM BM B =⋅∠=，sin 3MG CM BCB '=⋅∠=，得出F 、M 、B '三点在同一直线上，进而可得18tan 5FN FB FB N ''=⋅∠=，再求出12tan 5FM BF B ==∠，由6BN BF FN =+=解题．【详解】解：过M 点作MG B C '⊥，FM AB ⊥，AH BC ⊥垂足分别为F 、G 、H ，设3AH x =， ∵3tan 4B =，AH BC ⊥ ∴4BH CH x ==∵5AB AC ==，222AH BH AB +=，∴222(3)(4)5x x +=，解得1x =，∴3AH =，4BH CH ==，∴3sin 5B =， ∵BC AB '∥，∴B BCB '∠=∠，∵3BM =，∴5CM =， ∴39sin 355FM BM B =⋅∠=⨯=， 3sin 535MG CM BCB '=⋅∠=⨯=， ∵3MB MB '==，∴MG MB '=，即B '与G 点重合，∴F 、M 、B '三点在同一直线上， ∴924355FB FM MG '=+=+=，由折叠可知：FB N B '∠=∠， ∴24318tan 545FN FB FB N ''=⋅∠=⨯=， ∵9312tan 545FM BF B ==÷=∠， ∴1218655BN BF FN =+=+=，故答案为6【点睛】本题涉及了解三角形、折叠性质、等腰三角形性质、勾股定理等，解题关键是通过计算点M 到B C '的距离等于BM 得出F 、M 、B '三点在同一直线上．三、解答题（本大题共7题，满分78分）19. 计算：2tan 454sin 30cos30cos60︒︒−︒−︒【答案】3【解析】【分析】直接利用特殊角的三角函数值代入进而计算得出答案．【详解】解：2tan 454sin 30cos30cos60︒︒−︒−︒ 214()231=⨯− 131=− 131)=−+3=−【点睛】本题主要考查了特殊角的三角函数值，解题的关键是熟记特殊角三角函数值．20. 画二次函数2y ax bx =+的图像时，在“列表”的步骤中，小明列出如下表格（不完整）．请补全表格，并求该二次函数的解析式． x …1− 0 2 4 5 … y …5− 4 5− …【答案】见解析，24y x x =−+【解析】【分析】此题主要考查了待定系数法求二次函数的解析式，求二次函数的值，熟练掌握待定系数法求二次函数的解析式是解决问题的关键．由表格中的对应值得当=1x −时，5y =−，当2x =时，4y =，然后将其代入二次函数2y ax bx =+中求出a ，b 的值可得该二次函数的解析式，然后再分别求出当0x =时，4x =时对应的y 的值即可．【详解】解：由表格中的对应值可知：当=1x −时，5y =−，当2x =时，4y =，∴5424a b a b −=−⎧⎨+=⎩，解得：14a b =−⎧⎨=⎩， ∴该二次函数的解析式为：24y x x =−+，∴当0x =时，0y =，当4x =时，0y =，填表如下： x …1− 0 2 4 5 … y …5− 0 4 0 5− …21. 如图①是某款智能磁吸键盘，如图②是平板吸附在该款设备上的照片，图③是图②的示意图．已知8cm BC =，20cm CD =，63BCD ∠=︒．当AE 与BC 形成的ABC ∠为116︒时，求DE 的长．（参考数据：sin630.90︒≈，cos630.45︒≈，cot 630.50︒≈；sin530.80︒≈，cos530.60︒≈，cot530.75︒≈）【答案】11cm【解析】【分析】本题考查了解直角三角形的应用，过B 作BH CE ⊥于H ，解直角三角形即可得到结论．【详解】解：过B 作BH CE ⊥于H ，在Rt BCH △中，sin 630.908BH BH BC ︒==≈，cos630.458CH CH BC ︒==≈， 7.2cm BH ∴=， 3.6cm CH =，在Rt BEH △中，53BEH ABC BCE ∠=∠−∠=︒，cot 530.757.2HE HE BH ∴︒==≈， 5.4cm HE ∴=，3.6 5.49(cm)CE CH EH ∴=+=+=，20911(cm)DE CD CE ∴=−=−=，答：DE长为11cm ．22. 如图①，已知线段a 、b 和MON ∠．如图②，小明在射线OM 上顺次截取2OA a =，3AB a =，在射线ON 上顺次截取2OC b =，3CD b =．连接AC 、BC 和BD ，4AC =，6BC =．（1）求BD 的长；（2）小明继续作图，如图③，分别以点B 、D 为圆心，以大于12BD 的长为半径作弧，两弧分别相交于点P 、Q ，连接PQ ，分别交BD 、OD 于点E 、F ．如果BC OD ⊥，求EF 的长．【答案】（1）10BD =（2）154EF =【解析】【分析】本题主要考查了相似三角形的判定和性质以及基本作图.（1）由两边对应成比例及夹角相等，两三角形相似证明OCA ODB ∽，在相似三角形性质即可求解；（2）在Rt BCD 由勾股定理求出228CD BD BC =−=，再根据作法可知PQ 是BD 的垂直平分线，证明∽BCD EFD ，由相似三角形性质即可求解.【小问1详解】解：∵2OA a =，3AB a =，2OC b =，3CD b = ∴25OA OC OB OD ==，又∵O O ∠=∠，∴OCA ODB ∽， ∴25AC OA BD OB ==， ∵4AC =， ∴425BD = ∴10BD =，【小问2详解】∵6BC =，10BD =，BC OD ⊥， ∴2222C 1068CD BD B =−=−=，由作法可知，PQ 是BD 的垂直平分线，即EF BD ⊥，152DE BE BD ===， ∵CDB EDF ∠=∠，BCD FED ∠=∠，∴BCD FED ∽， ∴BC CD EF ED =，即685EF =， ∴154EF = 23. 如图，在ABC 中，已知点D 、E 分别在边BC AB ，上，EC 和AD 相交于点F ，EDB ADC ∠=∠，2DE DF DA =⋅．（1）求证：ABD ECD ∽；（2）如果90ACB ∠=︒，求证：12FC EC =．【答案】（1）见解析；（2）见解析【解析】【分析】本题考查了相似三角形的判定和性质，直角三角形的性质，熟练掌握相似三角形的判定和性质定理是解题的关键．（1）根据相似三角形的判定和性质定理即可得到结论；（2）根据相似三角形的判定和性质以及直角三角形的性质即可得到结论．【小问1详解】证明：∵2·DE DF DA =， ∴DE DF AD DE=， ∵FDE EDA ∠=∠，∴DEF DAE ∽，∴DAE DEF ∠=∠，∵EDB ADC ∠=∠，∴ADB CDE ∠=∠，∴ABD ECD ∽；【小问2详解】由（1）知，ABD ECD ∽，∴B ECD ∠=∠，∴BE CE =，∵90ACB ∠=︒，∴BAC B BCE ACE ∠+∠=∠+∠，∴BAC ACE =∠∠，∴AE BE CE ==，取AD 的中点G ，连接CG ，∵=90ACD ∠︒， ∴12DG CG AD ==，∴GDC GCD ∠=∠，∴1802DGC ADC ∠=︒−∠，∵BDE ADC ∠=∠，∴1802ADE ADC ∠=︒−∠，∴ADE CGF ∠=∠，由（1）知，DEF DAE ∽，∴AED DFE ∠=∠，∵DFE CFG ∠=∠，∴AED CFG ∠=∠，∴CGF ADE ∽，∴12CG CF AD AE ==， ∴12CF AE =， ∴12FC EC =． 24. 如图，在平面直角坐标系xOy 中．已知抛物线22y x x m =++经过点()3,0A −，与y 轴交于点C ，连接AC 交该抛物线的对称轴于点E ．（1）求m 的值和点E 的坐标；（2）点M 是抛物线的对称轴上一点且在直线AC 的上方．①连接AM 、CM ，如果AME MCA ∠=∠，求点M 的坐标；②点N 是抛物线上一点，连接MN ，当直线AC 垂直平分MN 时，求点N 的坐标．【答案】（1）3m =−，点E (1,2)−−（2）①点M (1−，22)，②点N (12−，2)−【解析】【分析】（1）把(3,0)A −代入22y x x m =++，求出m ，求出抛物线的对称轴，在用待定系数法求出直线AC 的解析式，可得点E 的坐标．（2）①设(1,)M n −，证明AME ACM ∽，得到2AM AE AC =⋅，利用勾股定理得出AE ，AC ，AM 的长，列方程求n ，可求M 的坐标．②连接NE ，求出90MEN ∠=︒，N 的纵坐标为2−，在代入二次函数解析式求横坐标．【小问1详解】解：抛物线22y x x m =++经过点(3,0)A −， 960m ∴−+=，解得3m =−，(0,3)C ∴−，抛物线的解析式为223y x x =+−，2223(1)4y x x x =+−=+−，∴抛物线的对称轴为直线=1x −，设直线AC 的解析式为y kx b =+，∴303k b b −+=⎧⎨=−⎩，∴13k b =−⎧⎨=−⎩，∴直线AC 的解析式为3y x =−−，当=1x −时，=2y −，∴点E 的坐标为(1,2)−−；【小问2详解】①如图，设(1,)M n −，(3,0)A −，(0,3)C −，(1,2)E −−，22(31)222AE ∴−++，22(3)332AC =−+222(31)4AM n n =−+++AME MCA ∠=∠，MAE CAM ∠=∠，AME ACM ∴∽， ∴AEAMAM AC =，2AM AE AC ∴=⋅，242232n ∴+=122n ∴=−，222n =．∴点M 的坐标为(1−，22)；②连接NE ．3OA OC ==，=90AOC ∠︒，45OAC OCA ∴∠=∠=︒，45AEM ∴∠=︒，直线AC 垂直平分MN ，ME NE ∴=，45AEM AEN ∠=∠=︒，90NEM ∴∠=︒．∵点E 纵坐标为2−，∴点N 的纵坐标为2−，2232x x ∴+−=−，2210x x +−=，112x =−212x =−．所以点N 的坐标为(12−−，2)−．【点睛】本题考查了二次函数的性质和应用，待定系数法求一次函式的解析式，相似三角形的判定和性质，垂直平分线的性质，关键是二次函数和三角形知识的综合运用．25. 如图①，在Rt ABC △中，90ACB ∠=︒，4tan 3ABC ∠=，点D 在边BC 的延长线上，连接AD ，点E 在线段AD 上，EBD DAC ∠=∠．的（1）求证：DBA DEC ∽△△；（2）点F 在边CA 的延长线上，DF 与BE 的延长线交于点M （如图②）．①如果2AC AF =，且DEC 是以DC 为腰的等腰三角形，求tan FDC ∠的值； ②如果52DE =，3EM =，:5:3FM DM =，求AF 的长．【答案】（1）证明见解析（2）①36tan 7FDC ∠=或2；②85AF = 【解析】【分析】（1）证明ACD BED △∽△，从而得出AD CD BD DE=，进而得出DBA DEC ∽；（2）①由两种情形：当DC CD =时，可推出AD BD =，可设CD x =，3BC a =，4AC a =，则3AD BD a x ==+，在Rt ΔACD 中勾股定理得：222(4)(3)x a a x +=+，从而76x a =，进而得出76CD a =，6CF AF AC a =+=，从而求得36tan 7CF FDC CD ∠==；当CE CD =时，根据DBA DEC ∽得出AB CE AD CD=，从而AB AD =，进一步得出结果； ②根据（1）可设5BD t =，2AD t =，设3BC a =，4AC a =，5AB a =，先由条件52DE =，确定AB BD =，进而表示出EX 和AX ，作DN CF ∥，交BE 的延长线于点N ，设AC 与BE 的交点为X ，可得出DMN FMX ∽，从而35DN MN DM FX MX FM ===，从而得出53FX DN =，可证得DNE AXE ∆≅∆，从而得出5EN EX ==，52DN AX a ==，从而表示出5NX EN EX a =+=，52536FX DN a ==，进而得出53AF FX AX a =−=，根据35MN MX =得出3358a MN NX =EN MN ME −=列出方程535328a −=，从而求得a 的值，进一步得出结果．【小问1详解】证明：EBD DAC ∠=∠，D D ∠=∠，ACD BED ∴∽， ∴AD CD BD DE=， DBA DEC ∴∽；【小问2详解】解：①当DC CD =时，由（1）知：AD CD BD DE=， AD BD ∴=，设CD x =，3BC a =，4AC a =，则3AD BD a x ==+，则Rt ACD △中，3AD a x =+，4AC a =，CD x =，由勾股定理得：222(4)(3)x a a x +=+，76x a ∴=， 76CD a ∴=， 2AC AF =，2AF a ∴=，6CF AF AC a ∴=+=，36tan 7CF FDC CD ∴∠==，当CE CD =时，由（1）知：DBA DEC ∽， ∴AB CE AD CD=， AB AD ∴=，AC BD ，3CD CB a ∴==，6CF a =，tan 2CF FDC CD∴∠==，综上所述：36tan 7FDC ∠=或2； ②如图，由（1）知：BD DE AD CD=， 52DE CD =， ∴52BD AD=，设5BD t =，2AD t =，设3BC a =，4AC a =，5AB a =，53CD BD CD t a ∴=−=−，在Rt ACD △中，由勾股定理得，222CD AC AD +=，222(53)(4)(2)t a a t ∴−+=，15t a ∴=，255t a =（舍去），55BD t a ∴==，532CD t a a =−=，55DE a ==， AB BD ∴=，由（1）知： ACD BED △∽△，90BED ACD ∴∠=∠=︒，BE AD ∴⊥，5AE DE a ∴==，21tan 42EX CD a DAC AE AC a ∠====， 152EX AE ∴==， 2252AX AE EX a ∴+=，作DN CF ∥，交BE 的延长线于点N ，设AC 与BE 的交点为X ，N AXE ∴∠=∠，DMN FMX ∽， ∴35DN MN DM FX MX FM ===， 53FX DN ∴=， AEX DEN ∠=∠，(AAS)DNE AXE ∴≌，5EN EX ∴==，52DN AX a ==， 5NX EN EX a ∴=+=，52536FX DN a ==， 2555623AF FX AX a a a ∴=−=−=， 35MN MX =， 3358a MN NX ∴==，由EN MN ME −=得，5353=， 245a ∴=5853AF a ∴==．【点睛】本题考查了相似三角形的判定和性质，解直角三角形，等腰三角形的判定和性质等知识，解决问题的关键是作辅助线，构造相似三角形．。

北京师范大学附属实验中学2023-2024学年九年级上学期期中考试语文试题

班级姓名学号成绩1 ．本试卷共12 页，共五道大题，27 道小题；答题纸共2 页。

满分100 分。

考试时间 150 分钟。

2．在试卷和答题卡上准确填写班级、姓名、学号。

3．试卷答案一律填写在答题卡上，在试卷上作答无效。

4．在答题卡上，选择题须用2B铅笔将选中项涂黑涂满，其他试题用黑色字迹签字笔作答。

命题召集人：刘慧芬审题人：袁海荣金秋十月，北师大实验中学开展了“探寻中国大学足迹”的综合实践活动。

同学们从“走进清华园”“走近北大红楼”“线上参观西南联大博物馆”三个方面进行资料搜集和考察。

下面几段文字是他们撰写的探究报告，请你阅读并完成下列任务。

1 分）1. 请用正楷字书写“探寻中国大学足迹”八个字作为手册的标题。

（人们经常把清华校园称为“清华园”，其实严格来说，“清华园”是专指以工字厅为主体的一组清代园林① 这组园林始建于十八世纪初的清代康熙年间，建成于乾隆年间，可谓历史悠久。

清华园曾经是康熙时期皇族的京郊别墅——熙春园的一部分。

道光年间，熙春园分为东、西两园——东部的熙春园及西部的近春园。

近春园四面荷塘围绕，后因朱自清先生的一篇《荷塘月色》，招（zhì) 莘莘学子的青睐② 东部的熙春园，即今之【举世瞩目】的清华园的前身。

据考证，康熙时期编辑的大型类书《古今图书集成》就是在东部的熙春园编辑、印刷的。

咸丰即位后，又将东园更名为“清华园”并亲题匾额。

现在我们所说的清华园，是指清华大学所在的本部校园，包括了最早的熙春园的全部，常被用来代指清华大学。

清华园的秋景，千般旖旎，万种风情，令人【趋之若鹜】。

一位诗人曾有过这样的描述：“清华园的秋，炽．烈又缠绵……秋风所至，翻覆纤手，摇落满树金辉。

”名园美景如斯，但更令人【拍手称快】的是其蕴含的“自强不息、厚德载物”的清华精神。

这种精神传承百年，在清华结出了累累．．硕果，培养了一批又一批在国人眼中【炙手可热】的学术大师、经世之才。

这种精神还将（rú) 养一代又一代人，为中华民族的复兴贡献更大的智慧与力量。

译林版牛津初中英语九年级上册第一学期第一次月考试卷、答题卡、参考答案

译林版牛津初中英语九年级上册第一学期第一次月考试卷所有选择题一律涂卡，用2B涂卡笔正确填涂，其余各题一律做在答题纸上！（总分120分，考试时间90分钟）一、单项填空(每小题1分，计15分)1.The dress is really beautiful, __________ it is too small for me.A.orB. butC. soD. and2.Kitty’s eyes are __________ with envy. She says that it’s unfair for her to fail again.A.WhiteB. greenC. redD. black3.---Little Jenny looks unhappy today.---Don’t worry. A box of chocolates will __________ her __________.A.give, upB. wake, upC. cheer, upD. pick, up4.My cousin wears his glasses every day. Without his glasses, he is __________ the blind.A.as long asB. as well asC. as bad asD. as good as5.---Mrs Black is an organized housewife.---That’s right. She always keeps everything __________ in her house.A.in orderB. out of orderC. in troubleD. in the way6.---Excuse me, I wonder __________ the plane can land on time.---Wait a minute, please. Let me check it out.A.IfB. whichC. thatD. who7.With the address, I have no __________ in finding Kitty’s new house.A.timeB. ideaC. difficultyD. help8.---Where are you going to stay when you get to Shanghai?---I may live __________ in a hotel __________ in a friend’s house.A.both; andB. either; orC. neither; norD. not only; but also9.Your computer doesn’t work now. Is there __________ with it?A. wrong somethingB. something wrongC. wrong anythingD. anything wrong10. The movie Youth __________ my grandma __________ in the life in the countryside.A.reminds; ofB. lets; downC. wakes; upD. helps; out11. Taking a GPS will make __________ easier for you to visit a strange place.A. itB. thatC. oneD. this12. Jenny looks unhappy these days. Let's try to _______________.A. wake up herB. wake her upC. cheer her upD. cheer up her13. You can’t be __________ while drivingA. to carefulB. too carelessC. too carefulD. so carelessly14. ---Bob, please tell me __________. ---In south Hill School.A. where will the match be heldB. where the match will be heldC. when will the match be heldD. when the match will be held15---It is said that people in the Year of Sheep are gentle.---Maybe, but for my mother, __________ . In fact, she gets angry easilyA. that’s not the caseB. that’s all rightC. that’s a good ideaD. that’s for sure二、完形填空(每小题1分，计15分)Why is setting goals(目标) important? ___16___ goals can help you experience___17___ you want in life. Goals allow you to make your life happen.Successful people in life imagine how their life should be and set lots of goals. By ___18___ goals you are ta king your life. It’s like having a ___19___ to show you where you want to go. Think of it this way. There are two drivers. One has a destination (目的地)in mind which can be found on a map. She can drive straight there without ___20___ any time or wrong turns. ___21___ driver has no goals or destination or map. She starts off at the same time from the same place as the first driver, ___22__ she drives aimlessly around, never getting anywhere, just ___23__ gas(汽油). Which ___24__ do you want to be?Winner in life sets goals and ___25__ them. They decide what they want in life and then get there by making ___26___ and setting goals. ___27___ people just let life happen by accident. Goals aren’t difficult to set, and they aren't difficult to reach. It’s up to you to find out ___28___ your goals really are.Research tells us: when we write a goal down, we are more ___29___ to achieve it.Also when you write your goals in your own way, you are able to make ___30___ realize situations that will bring you nearer to your goals.16. A. So B. Because of C. Because D. impatient17.A. both B. anything C. nothing D. none18.A. to set B. setting C. set D. sets19. A. teacher B. friend C. map D. picture20.A. saving B. stealing C. killing D. wasting21.A. Other B. The other C. Another D. The others22. A. or B. and C. but D. so23. A. thinking of B. using up C. turning off D. paying for24. A. player B. runner C. driver D. teacher25. A. follow B. put C. tell D. practise26.A. plans B. money C. friends D. maps27.A. Lucky B. Young C. Ordinary D. Unsuccessful28.A. where B. what C. how D. why29. A. hard-working B. curious C. modest D. clever30. A. yourselves B. myself C. yourself D. ourselves三、阅读理解(每小题2分，计30分)(A)The Westwood Middle School has decided to hold a blood drive (献血活动), and you can help.31. How many people are needed for the blood drive?A. 50.B. 65.C. 17.D. 21.32. Students can pick up information brochures ________________ .A. in the school officeB. at the school gateC. in the school canteenD. on the school playground33. When will the blood drive take place?A. On September 20B. On September 21C. On October 20D. On October 21(B)Sometimes I really doubt whether there is love between my parents. Every day they are very busy making money for my schooling.One day, my mother was sewing a quilt(缝被子). I silently sat beside her.“Mum, is there love between you and Dad?” I asked in a very low voice.With surprise in her eyes, she stopped her work for a while. Th en she said, “Susan, look at this thread(线). It can hardly be seen, but it’s really there. It makes the quilt strong and durable. If life is a quilt, love should be a thread. Love is inside. ”I couldn’t understand her until the next spring. At that time, my father suddenly got sick seriously. My mother had to stay with him in the hospital for a month. After they were back, my mother helped my father walk slowly on the country road every day. They were so kind to each other and it seemed they were the happiest couple.After two months, my father still couldn't walk by himself.“Dad, how are you feeling now?” I asked him one day.“Susan, don’t worry about me,” he said. “I just like walking with your mum. I like this kind of life. ” Reading his eyes, I kne w he loves my mother deeply.Now I understand that love is just a thread in the quilt of our life. Love is inside, making life strong and warm.34. Why are Susan’s parents busy trying to make money?A. To send Susan to school.B. To go to see the doctor.C. To buy a strong quilt.D. To show their love.35. What does the underlined word “durable” mean in Chinese? ________________.A. 好看的B. 廉价的C. 耐用的D. 昂贵的36. Susan came to understand her mother ________________.A. while her mother was sewing a quiltB. before her father was in hospitalC. when she was sitting beside her motherD. after her father was seriously sick37. Which of the following could be the best title for the passage?A. How to make a quilt strongB. Love is just a threadC. Walking on the country roadD. A seriously sick father(C)Young people can have problems with their minds．Some students become worried because they have to study very hard and they have too much homework to do every day．Others have trouble getting on well with people like their teachers and classmates．Liu Wei, a junior 2 student from Shandong, could not understand his teacher and was doing badly in his lessons．He became so worried about it that he started to cut his finger with a knife．Another student, 14-year-old Yang Fang from Guangzhou, was afraid of exams. She got very worried in one, and when she looked at the exam paper, she couldn't think of anything to write.A recent report says about 18％ of teenagers have mental(精神上的)problems．Their troubles include being worried and very unhappy, and having problems in learning and getting on with people．Many students who have problems won't go for advice or help．Some think they will look stupid(愚蠢)if they go to see a doctor．Others don't want to talk about their secrets．Liang Hong, an expert on teenagers from Beijing Hospital has the following advice for teenagers：·Talk to your parents or teachers often.·Take part in group activities and play sports.·Go to see a doctor if you feel unhappy or unwell.38. If a student often feels worried and unhappy, he or she may have ________________.A. mental problemsB. a coldC. no familyD. no money39.Liu Wei cut his finger with a knife ________________.A. because he was afraid of his teacherB. because he wanted to frighten his parentsC. because he was so worried about his studiesD. because his finger was badly hurt40. Students who have problems won't go to see a doctor because ________________.A. they think they will look stupidB. they don't think doctors can help themC. they don't think their problems are seriousD. they can't afford it41.What should we do if we have problems with our minds?A. We should argue with others．B. We should eat more．C. We should talk to others often．D. We should cut our fingers．(D)We may know that there are four basic（基本的）periods for human beings to pass through when you enter and live in another country. This process(变化过程) helps you deal with culture shock(文化冲击).Culture shock begins with the "honeymoon period". This is the time when you first arrive in a place where everything about the new cu1ture is strange and exciting. You see new things, hear new sounds and language, eat new kinds of food. This period can last for quite a long time because you feel very happy.Unluckily, the second period can be more difficu1t. After you have got used to your new life, you can become very tired and begin to miss your motherland, your family, your friends, your pets and so on. Al1 the little prob1ems in life seem to be much bigger and more worrying when you face them in a foreign country. This period can be very difficult and lead to moving backwards quickly.The third period is called the "adjustment(调整) period". This is when you begin to realize that things are not so bad in the new country. Your sense of humor usually becomes stronger and you realize you are becoming stronger by 1earning to take care of yourself in the new place. Things are still difficult, but you are now a survivor(善于求生者).The fourth period can be cal1ed "at ease(安逸) at last". Now you feel quite comfortable in your new place. You can deal with most problems that you have. You may still have prob1ems with language, but you know you are strong enough to deal with them. At this time, you may feela little uncomfortable if you go back to your motherland.42. According to the passage, culture shock usually happens when you ________________.A. get married to a foreignerB. live in a big cityC. go to live in a foreign countryD. meet foreigners in your motherland43. During the first period of the process, you feel ________________.A. sad and lonelyB. happy and excitedC. angry but strongD. easy but uncomfortable44. You will find that you are a survivor in ________________.A. the lst periodB. the 2nd periodC. the 3rd periodD. the 4th period45. From the passage , we can know that ________________.A. Living in another country is funB. it's boring to live in another countryC. knowing about culture shock is hardD. it's not easy to deal with culture shock四、词汇(46-50每小题2分，51-60每小题1分，计20分)A)46.How _______________ it was raining when he got home yesterday!47. He _______________ to answer the questions in public just now.48.He made a few mistakes in his homework because of his _______________.49.The story _______________ is not interesting, but why does it have so many readers?50.Study hard，or you will _______________ your classmates.B)用括号中所给单词的正确形式填空，使短文完整。

2024年部编版九年级(下)学业水平考试语文试卷(附答案)

2024年部编版九年级（下）学业水平考试语文试卷（时间100分钟，满分150分）考生注意：本卷共有22题，请将所有答案写在答题纸上。

写在试卷上一律不计分。

一、文言文（共34分）（一）默写与运用（13分）1.纤纤擢素手，__________________。

（《古诗十九首》）2.____________________，洪波涌起。

（曹操《观沧海》）3.马作的卢飞快，________________。

（辛弃疾《破阵子·为陈同甫赋壮词以寄之》）4.青西郊野公园的水杉茂密成荫，鸟儿嘤嘤鸣唱，不由让人联想起欧阳修《醉翁亭记》中的句子:“______________，______________”。

（二）阅读下面选文，完成5—10题（21分）【甲】山不在高，有仙则名。

水不在深，有龙则灵。

斯是陋室，惟吾德馨。

苔痕上阶绿，草色入帘青。

谈笑有鸿儒．．，往来无白丁。

可以调素琴，阅金经。

无丝竹之乱耳，无案牍之劳形。

南阳诸葛庐，西蜀子云亭。

孔子云：何陋之有？【乙】唐荆川①性俭素。

冬不炉，夏不扇，岁衣一布，月食一肉。

结庐陈渡②，不蔽风雨。

时往来乡郭，乘小舟，低头盘膝，见者不知为贵人。

即遭凌侮，不较也。

冬则加草以为温，有老友见之泪下，为市．一床，而终身无厚茵褥③。

门生子弟，从公游处，不堪其苦，而公独安之，曰：“不如是，何以袚除欲根？”【注释】①唐荆川：唐顺之，号荆川。

明朝大臣。

②陈渡：地名。

③茵褥：床垫。

5.【甲】文的作者是_______(人名）。

（2分）6.解释下列句中的加点词。

（4分）（1）谈笑有鸿儒．．（）（2）为市．一床（）7.用现代汉语翻译下面的句子。

（3分）可以调素琴，阅金经。

8.【甲】【乙】两文都描写了住所的环境。

【甲】文“_____________，_____________”写出其住所___________的特点；【乙】文“_____________”则凸显出唐荆川住所简陋的特点。

（6分）9.【甲】文中作者认为陋室不陋是因为“”，【乙】文中“公独安之”的原因是（用现代汉语回答）。

初中九年级上语文期末测试卷

初中九年级上语文期末测试卷命题人:7（一）（22分）阅读下面一段文字，完成1-4题。

(12分)据多家méi tǐ报道，28岁的邓露作为海外青年优秀人才入选中组部“青年千人计划”，成为湖南大学建筑工程系教授和博导 A “80后”教授在湖大登场，似乎让人觉得不可思议。

面对质疑，邓露很dàn ding ，他解释道:“我仅仅在做自己喜欢的事，并按照既定的目标脚踏实地的实现自己的愿望而已。

我的成功完全能够复制!”。

他认为现在中国孩子许多在被迫灌输知识，这样做不太合理，不但摧残了孩子的身心，而且扼杀了孩子学习的兴趣。

所以，他hū yù学校和家庭教育要尊重孩子，一切从孩子的终身利益出发。

1．根据拼音填写准确的词语。

（3分）2．在横线A处填上准确的标点符号。

(1分) A处的标点是_______________。

3.画线句有语病，修改意见: （2分）4.为了激发学生的学习动力，让学生早日成人成才，江海中学团委决定于5月10日上午8时在学校礼堂举行励志教育主题活动。

请你完成下面的任务。

(6分)①根据活动主题，请给本次活动取一个名称___________________________。

（2分）②团委决定邀请邓露参加本次活动，下面是小强同学拟写的请柬，在内容和格式上各有一处错误，请修改。

(4分)请柬邓露同志:兹定于2012年5月10日上午8时在我校举行励志教育主题活动，届时请您莅临指导。

锦江中学团委2012年5月8日5.默写。

（10分）（1）晓战随金鼓，。

（2），雪上空留马行处。

（3），春风不度玉门关。

（4）月如钩，。

（5）《与朱元思书》中表现作者向往自然、厌弃尘俗的句子是: ，；，。

（6）《龟虽寿》中体现曹操老当益壮、壮心不已的奋斗精神的句子是: ，，，。

（二）（63分）（一）阅读下面一首宋诗，回答问题。

（6分）宿云梦馆欧阳修北雁来时岁欲昏，私书归梦杳难分。

井桐叶落池荷尽，一夜西窗雨不闻。

九年级上册数学王朝霞试卷

九年级上册数学王朝霞试卷全文共四篇示例，供读者参考第一篇示例：九年级上册数学王朝霞试卷考试时间：120分钟总分：150分第一部分选择题（共80分）1.下列各组数中，互为相反数的是（）。

A.5，-5B.-5，2C.3，-3D. -4，43.(-7)×(-8)÷(-2)的结果是（）。

A. 28B.7C.14D. -284.化简(-3x⁴+2x³-5x²-4x)÷(-2)的结果是（）。

A. 3x⁴-2x³+5x²+4xB. -3x⁴+2x³-5x²-4xC. 1.5x⁴-x³+2.5x²+2xD. -1.5x⁴+x³-2.5x²-2x6.已知x+3=10，求x的值是（）。

A. 13B. 7C. 10D. 47.在△ABC中，AB=8cm，AC=6cm，BC=10cm，那么这个三角形是（）。

A. 直角三角形B. 钝角三角形C. 锐角三角形D. 不是三角形8.如图，长方形的长是x+5，宽是2x，如果长方形的周长是26，那么x的值是（）。

A. 4B. 5C. 6D. 711.两个相等的数的和是18，这两个数是（）。

12.一条绳子长8m，剪下的一段长3.5m，剩下的长（）米。

13.已知折线ABCDE的周长是20cm，AB=3cm，BC=7cm，CD=2cm，求DE的长度是（）cm。

14.在一个比例式中，已知a:2=3:5，那么a的值是（）。

15.已知折线PQRS的周长是28cm，PQ=2cm，QR=6cm，RS=4cm，SO=10cm，求PO的长度是（）cm。

16.计算：（-2x³+3x²-4x）÷（-2）的结果。

17.计算：(-6x⁵+5x⁴-4x³-3x²)÷(-3)的结果。

18.如图，长方形的长是2x+1，宽是x-2，如果长方形的面积是15，求x的值。

初三九年级语文语文答题纸

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镇江市外国语学校 2010-2011 学年第一学期
九年级语文阶段性质量反馈答题卡
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6．（1 分）（1） (2 分) (2)
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