初三上期12单元测试(A卷)
(人教版)初中英语九年级 Unit 12单元测试卷(附答案)01
Unit 12 Life is full of the unexpected. 单元测试第一卷听力部分（15分）Ⅰ. 听句子，选择与所听句子相符合的图片（5分）1. A. B. C.2. A. B. C.3. A. B. C.4. A. B. C.5. A. B. C.Ⅱ. 听对话，选择最佳答案（5分）6. Why was Fred exhausted?A. Because he kept studying all night.B. Because he kept singing all night.C. Because he kept watching TV all night.7. How did Jimmy go to school this morning?A. His parents gave him a ride.B. He ran to school.C. He went to school by bike.8. Did Mary show up at the meeting this morning?A. Yes, she did.B. No, she didn’t.C. It’s not mentioned.9. When did the movie start?A. At 8: 15.B. At 8: 30.C. At 8: 45.10. What was the matter with the man yesterday?A. He was late for the costume party.B. He was very cold.C. He was ill.Ⅲ. 听短文和短文后面的问题，选择最佳答案（5分）11. A. One. B. Two. C. Three.12. A. Three. B. Five. C. Six.13. A. He was playing with his new toy car at home.B. He was studying at school.C. He was playing at the neighbor’s house.14. A. John. B. Richard. C. Their neighbor.15. A. A son to be proud of B. A little boy’s mother C. An accident第二卷笔试部分（85分）Ⅳ. 单项选择（10分）16. We were surprised that he didn’t ________ at his birthday party.A. put upB. come outC. show aroundD. show up17. The film ________ for ten minutes when we got to the cinema.A. beganB. had begunC. wasD. had been on18. —I’m sorry. I ________ my homework at home.—That’s all right. Don’t forget ________ it to school this afternoon.A. forget; to takeB. forget; to bringC. left; to takeD. left; to bring19. —I believe we’ve met here before.—________. I’ve never been here before.A. It isn’t the sameB. It’s trueC. I don’t think soD. I believe so20. We’ll go in the same direction. Let me ________.A. give you some feetB. give you ridesC. give you a walkingD. give you a lift21. —Did Jim and Mary get married?—Yes. They ________ for three years.A. marriedB. have marriedC. have got marriedD. have been married22. —What did Mr Zhang say?—He ________ the results of the game.A. developedB. dividedC. announcedD. created23. —Did you catch the school bus this morning?—No. It ________ when I arrived at the bus stop.A. is leavingB. has leftC. had leftD. would leave24. I ________ and missed the bus.A. keptB. oversleptC. realizedD. took25. He told you that he had already had a new bike, ________?A. did heB. didn’t heC. had heD. hadn’t heV. 完形填空（10分）It was Sunday afternoon. My brother and I were alone at home. My parents went out. I was doing my homework while my younger brother was watching TV. Suddenly the doorbell rang. Ding-Dong! My brother thought that it was our parents, so he opened the 26 quickly.A tall man wearing a black raincoat stood outside. He said that he came to sell books and asked politely if our parents were at home.Without thinking.my brother said. "No." Then the man asked if we would like to 27 some story books. Irefused him. When I wanted to close the door, he suddenly pushed the door very hard and came into our house. He took out a 28 and ordered me to tie up my brother’s hands with a rope（绳子）.I tied up his hands in a special way so my brother could untie（解开）29 easily. The man then tied my hands up and locked 30 of us in the kitchen. Soon, he went upstairs to 31 money. I taught my brother to untie the rope on his hands. He then untied me. I rushed to the telephone to call the police, 32 the line was dead. The doors were all locked from the outside. It was lucky that the man forgot to lock the kitchen window. We got out of the house through the kitchen window and to the 33 pay phone to call the police.Soon 34 came to our house and the man was caught. By that time, my parents had come home. We told them the whole story. My parents were 35 that we were not hurt. They told me that I should stop my brother from opening the door to strangers. I learnt a lesson on safety.26. A. window B. door C. book27. A. lend B. sell C. buy28. A. book B. knife C. gift29. A. himself B. myself C. herself30. A. all B. neither C. both31. A. look for B. look at C. look after32. A. and B. so C. but33. A. farthest B. nearest C. largest34. A. my friends B. the neighbors C. the police35. A. glad B. angry C. sadⅥ. 阅读理解（30分）AYesterday afternoon Mr Brown wanted to catch the 1:30 flight to New York to have an important meeting. At 4:30, Mrs Brown, his wife, got his phone call and he said that he was still at the airport.“What happened to you?” Mrs Brown asked in surprise.“Well,” Mr Brown said. “Everything was fine at first. I got my ticket checked, took my bags and waited in line to get on the plane. While I was walking across the runway to the plane, I saw my friend Jack Scott-he was a flight attendant. I shouted to him and a policeman caught me.”“But why?”“I don’t know. As soon as he heard my shout, he ran towards me and caught me.”“What did you shout to your friend?”“All I said was ‘Hi, Jack’; you know that’s the usual way we say hello to our friend.”“But the sentence ‘Hi，Jack’ also means to take control of a plane by force（武力）. Don’t you know?”36. Mr Brown wanted to go to New York ________.A. by trainB. by airC. by bus37. When did Mr Brown get to the airport yesterday?A. Before 1:30.B. After 1:30.C. At about 4:30.38. Why was Mr Brown still at the airport at 4:30?A. Because he was late for his flight.B. Because he didn’t want to go to New York.C. Because the police stopped him.39. What was Jack Scott in the passage?A. He was a pilot.B. He was a flight attendant.C. He was a policeman.40. We know that ________ from the passage.A. Jack Scott asked Mr Brown not to fly to New YorkB. Mr Brown would take control of the plane by forceC. the policeman didn’t understand what Mr Brown really meantBApril Fool’s Day is supposed to be a day to play jokes on others in the hope of getting a good laugh and making one feel like a fool. However, the April Fool’s Day of 1989 was quite different for my mom and me.That day my friend Jimmy and I were playing a game. I had dropped down from a bar（横木）many times in the past without ever having a problem, but that day the simple act of dropping to the ground became a nightmare（服梦）.I broke my arm.Jimmy’s dad heard my crying and rushed out to see what was going on. When he saw the problem, he quickly put me into his truck and went inside to telephone my mom and let her know he would take me to the hospital. As that day was April Fool’s Day, Mom was not buying it and really thought all this was a big joke. Mom was finally convinced by Jimmy’s mom. When she saw me, she broke down in tears because she felt so bad-she originally thought this was just a big prank（恶作剧）.I guess one could compare this to the story of “The Boy Who Cried Wolf”. Since I had pulled pranks before, it is no wonder that my mom didn’t believe it. I as well as my mom was made to look like a fool that day. We both learneda valuable lesson.41. What happened to the writer on the April Fool’s Day of 1989?A. He dreamed a terrible dream.B. He was hurt by Jimmy.C. He had an accident.D. He fooled his mom with his friend.42. Why did Jimmy’s dad phone the writer’s mom?A. Because he wanted to play a joke on her.B. Because he wanted her to go to the hospital to pay the money.C. Because he wanted to see how deeply she loved her son.D. Because he wanted to inform her of the accident.43. What does the underlined sentence “Mom was not buying it” mean?A. She didn’t believe what Jimmy’s dad said.B. She would not like to pay the money.C. She had no preparation for the bad news.D. She thought her son deserved（应受）it.44. Why did the writer mention the story of “The Boy Who Cried Wolf”?A. Because he thought it was his mom’s fault.B. Because he had a lesson like that.C. Because he was proud of his story.D. Because he felt he was luckier than that boy.45. From the passage we can infer that ________.A. the writer’s mom didn’t care much about himB. the writer was a dishonest personC. the writer won’t pull pranks as beforeD. the writer will lose interest in gamesCI live with my grandmother in a Beijing yard house. One day last year, I was surprised to see a foreigner coming out of the house next door to ours. He was very tall with brown hair and a pair of glasses.The first time I saw him, I was too shy to speak to him. “My English is too bad!” I thought. ①我的祖母告诉我说他刚搬进我们的院内。
九年级上单元测试卷第二单元训练（A卷）单元练习九年级上册语文版语文试题下载
九年级上单元测试卷第二单元训练（A卷）单元练习九年级上册语文版语文试题下载试题预览第二单元训练（A卷）一、基础知识及运用（共40分）（一）选择题（每题3分，计24分）1．下列各组加粗字注音无误的一项是（）A．教诲（huì）畸形（qí）杳无消息（yǎo）B．晕圈（yùn）秀颀（qí）虬枝盘旋（qiú）C．煦暖（xù）自给（ɡéi）姹紫嫣红（chà）D．屏气（bǐnɡ）天籁（lài）义愤填膺（yōnɡ）2．下列词语有两个错别字的一项是（）A．空前绝后忘乎所以妙手隅得旷远飘逸B．不期而遇五彩斑斓纵横绝荡繁茂泼辣C．抑扬顿挫坦荡如底厌厌欲睡恍然大悟D．不折不挠疯疯癫癫人迹罕致月光皎洁3．下列解释有误的一项是（）A．博学多识：学识丰富。
惊叹不已：因为惊讶而叹息不止。
B．四面楚歌：比喻四面受敌处于孤立危急的困境。
鸣金击鼓：发出金属般和敲打鼓一样的声音。
C．餐风饮露：形容旅途或野外生活的艰苦。
恍然大悟：形容忽然醒悟。
D．心旷神怡：心情舒畅，精神愉快。
见缝插针：比喻尽量利用一切可以利用的空间或时间。
4．下列句子没有语病的一项是（）A．电门一关，就可以阻止电流不再进来。
B．北京的春天简直是一座美丽的大花园。
C．这篇文章的内容和见解都很丰富。
D．这就给我们创造了有利条件。
5．对“中国是弱国，所以中国人当然是低能儿，分数在60分以上，便不是自己的能力了：也无怪他们疑惑。
”一句的理解正确的一项是（）A．作者认为中国是弱国，中国人就是低能儿，日本爱国青年看不起中国人是有理由的。
B．作者认为中国是弱国，中国人就是低能儿，只能忍受日本爱国青年的蔑视。
C．作者认为中国是弱国，弱国的学生能力差，因此得60分以上就容易被日本学生怀疑。
D．作者模拟日本“爱国青年”的口吻，用两层荒谬的推理，表达自己作为弱国国民的极度激愤和无奈。
6．下列说法恰当的是（）A．茅盾的“农村三部曲”是指《春蚕》《秋收》《残冬》。
初三九上物理单元测试卷
初三九上物理单元测试卷一、选择题（每题2分，共20分）1. 光在真空中的传播速度是：A. 3×10^8 m/sB. 3×10^4 km/sC. 3×10^5 km/sD. 3×10^6 km/s2. 以下哪个选项不是力的作用效果？A. 改变物体的运动状态B. 改变物体的形状C. 改变物体的质量D. 改变物体的颜色3. 物体的惯性大小取决于：A. 物体的质量B. 物体的速度C. 物体的体积D. 物体的密度4. 根据欧姆定律，下列哪个说法是正确的？A. 电压一定时，电流与电阻成反比B. 电流一定时，电压与电阻成正比C. 电阻一定时，电流与电压成正比D. 以上说法都不正确5. 以下哪个选项是正确的功率计算公式？A. P = FvB. P = F/sC. P = F * sD. P = s/v二、填空题（每空1分，共10分）6. 牛顿第一定律，也称为______定律，它指出物体在没有受到外力作用时，将保持静止状态或匀速直线运动状态。
7. 电流的单位是______，符号为A。
8. 电功率的单位是______，符号为W。
9. 电阻是表示对电流的阻碍作用大小的物理量，其单位是______，符号为Ω。
10. 根据焦耳定律，导体产生的热量Q与电流的平方、电阻和通电时间的关系可以表示为Q=______。
三、简答题（每题5分，共10分）11. 简述牛顿第三定律的内容。
12. 简述串联电路和并联电路的特点。
四、计算题（每题15分，共30分）13. 已知一个物体的质量为2kg，受到的重力为19.6N。
求物体受到的重力加速度g。
14. 一个电阻为10Ω的电阻器，通过它的电流为0.5A，求该电阻器两端的电压。
五、实验题（每题10分，共20分）15. 描述如何使用弹簧秤测量物体的重力。
16. 设计一个实验，验证欧姆定律。
六、论述题（10分）17. 论述力的三要素及其对力的作用效果的影响。
2020年人教版九年级英语全册Unit 12单元测试卷(含答案)
Unit12一.单项选择。
（15分）( )1. —Everyone wants to make money. But _______ me, the most important thing is to be happy.—I agree with you.A. such asB. thanks toC. instead ofD. as for( )2. _______ the time I got outside, the bus had already left.A.ByB. ForC. InD. On( )3. —Germany ended Brazil’s FIFA World Cup dream with a 7-1 semi-final (半决赛) victory.—The result was really ________.A. normalB. generalC. unexpectedD. impossible( )4. —When Miss Wang got to the station, the train had left. She ________ the train.—What a bad luck she had!A. pickedB. missedC. caughtD. lost( )5. _______ I got to the bus stop, the bus had already left.A. BeforeB. AfterC. As soon asD. Since( )6. —Are you going to Sydney by ______ train?—No, I am going to take ________ plane there.A. a; /B. / ; aC. a; theD. the; a( )7. —Mom, shall we have lunch now?—We won’t have lunch _______ your dad comes back.A. untilB. sinceC. whileD. when( )8. —What’s the result of the examination?—The teacher said that ________ of the students had passed the exam.A. four fiveB. fourth fivesC. fourth fifthsD. four fifths( )9. —How is the apple on the table?—It looks really nice, but it ________ sour.A. soundsB. feelsC. tastesD. looks( )10. —It’s time for class. Please stop ________. —Yes, sir.A. talkingB. to talkingC. to talkD. talk( )11. —Please remember to turn off the lights when you leave.—_________.A. Yes, I doB. No, thanksC. OK, I willD. Sorry, I won’t( )12. —Did you see the two boys on the playground?—Yes. But I saw one leave with a bike, and _______ playing basketball alone.A. anotherB. othersC. otherD. the other( )13. —Did you see the basketball star yesterday when he came to visit our school yesterday?—No, when I _____to school, he had already left.A. gotB. getC. had gotD. have got( )14. They were doing homework when the telephone _______.A.ringsB. was ringingC. rangD. has rangA.wentB.have goneC.goneD.had gone二.完形填空(每小题1分，共10分)It was time for a holiday! Dalia wanted to go to the beach, 1 her mum, dad and brother had other ideas. Where would Dalia’s family go on holiday?Suddenly, a golden envelope fell through the letter box. On the front it said “You’ve won!”“ 2it!”shouted Mum, Dalia and Ahmed. Dad opened it. They had 3 a free holiday.“I hope it’s to the seaside,”said Dalia. “I can swim in the sea and make sand castles.”“No, I hope it’s a camping holiday,”said Dad. “I can sleep in a tent and get lots of 4 .”“No, I’d like to go on a cruise (乘船游览),”said Ahmed. “I can watch the dolphins and eat lots of nice food.”“Well, I’d like to go to a big city,”said Mum. “I can go shopping in the shopping mall and go to the theatre.”Then they started to argue. They couldn’t decide. Beach! Camping! Cruise! City! They argued 5 it was dark outside. Then the phone rang. Dalia answered it. “Hello, this is Lucky Holidays. You’ve won a holiday to sunny Alexandria. ”“That is 6 my grandmother lives.”“This is your grandma!”said Dalia’s grandma.“Oh my dear grandma, you 7 us!”replied Dalia. “You are all invited to spend your summer holiday with 8 ,”said her grandma.They packed their suitcases and spent two 9 weeks at the grandma’s home. Ahmed got his nice 10 . Dad got his fresh air. Mum went shopping and Dalia swam in the sea. Everyone was happy. ( )1. A. so B. or C. if D. but( )2. A. Open B. Close C. Throw D. Burn( )3. A. lost B. won C. discovered D. found( )4. A. fresh fruit B. clean water C. fresh air D. beautiful clothes( )5. A. while B. after C. before D. until( )6. A. where B. when C. how D. who( )7. A. stared B. heard C. fooled D. cancelled( )8. A. them B. you C. her D. me( )9. A. sad B. happy C. believable D. unexpected( )10. A. jacket B. tent C. food D. method三.阅读理解。
九年级英语Unit12 单元测试卷四(含答案)
Unit12 单元测试卷四（含答案）满分:100分, 限时:60分钟Ⅰ. 单项选择(每小题1分, 共15分)1. What happened ______ you ______ April Fool’s Day?A. with; inB. to; onC. with; onD. to; in2. What would you like to give to your teachers ______?A. on Teachers’ DayB. in Teach ers’ DayC. on Teacher’s DayD. in Teacher’s Day3. There ______ great changes in my hometown by the end of 2000.A. have beenB. wereC. had beenD. had had4. Oh, Danny. It’s raining outside. You’d better ______ your raincoat.A. put onB. put upC. dressD. wear5.—When did you ______?—I’ve ______ for two months.A. be married; been marriedB. get married; been marriedC. be married; marriedD. get married; got married6. —I can’t find my mobile phone.—Don’t worry. Mayb e you it at home.A. forgotB. missedC. lostD. left7. My alarm clock didn’t. There must be something wrong with it.A. go offB. take offC. put offD. set off8. I’m sorry to tell you that all the tickets were . You have to wait for the next concert.A. put outB. sold outC. taken outD. set out9. On her way home, Lucy saw a thief in a shop. She stopped 110 at once.A. steal; to callB. to steal; callingC. stealing; to call10. Grandma wants to watch the program Legal Report. Please the TV.A. turn offB. turn onC. turn down11. We planned to meet at 10:30 at the station yesterday, but Bob didn’t until 11:00.A. turn upB. stay upC. show upD. grow up12. I some washing when you called me last night.A. was doingB. am doingC. were doing13. By the time I got to the airport, the plane .A. took offB. has taken offC. had taken off14.Scrooge is a mean person nobody wants to become friends with him.A. too; toB. so; thatC. such; that15.Mom does all the housework so that Sarah can take the time her words on paper.A. putB. puttingC. to putD. putsⅡ. 完形填空(每小题2分, 共20分)Who designed the first helicopter? Who __16__ the most famous pictures in the world? Who knew more about the human body than most __17__? There is an answer__18__ all these questions—Leonardo de Vinci.Leonardo may have been the greatest genius (天才) __19__ have ever known.He lived in Italy around the year 1500, but many of his inventions seem modern to us today. For example, one of his notebooks has drawings of a helicopter. Of course, he couldn’t __20__ a helicopter with the things he had. But scientists say his idea would have worked.But Leonardo __21__ an inventor. He was one of the greatest artists of his day. By the time he was twenty years old, he was called a master painter, and as he gotolder he became __22__ more famous. Sometimes he drew a hand ten different ways __23__ he was ready to paint.Many of Leonardo’s wonderful paintings are still with __24__ today. You may know one of his most famous works—the __25__ woman known as the Mona Lisa.16. A. took B. made C. painted D. invented17. A. artists B. doctors C. painters D. people18. A. to B. of C. for D. from19. A. the scientists B. the artists C. the world D. people20. A. draw B. paint C. work D. build21. A. was just B. wasn’t just C. wasn’t D. was no longer22. A. less B. no C. even D. very23. A. before B. after C. because D. when24. A. him B. us C. them D. you25. A. interesting B. crying C. smiling D. surprisingⅢ. 阅读理解(每小题2分, 共30分)AOn September 13th, I woke up in the best mood. It was a late start, so I got to sleep in. Not only did I get my full eight hours of sleep, but an additional two more hours as well. I got ready, danced in my room to my favorite music while I picked out my clothes, made my lunch, and was on my way to school. I arrived at 9:50 a. m. Little did I know, in the next 20 minutes, my life would change forever. As I got out of my classroom, there he was, holding the gun.Although everything happened so fast, in a matter of about 4 minutes, I remember it clearly. I remember every face I saw, and I remember every sound I heard. I remember the fear and the panic of the unknown. And lastly, I remember running. Running for my life. I ran down the stairs, out of the school’s front doors, and down the street to the primary school. I remember looking down at my feet. As I looked down I thought to myself, “How am I running so fast? ”I finally made it to a safe classroom, and 20 other students and I settled in for lockdown. We stayed close to one another and cried. It felt as though the tears going down our faces would never stop. We passed our phones around to text our loved ones that we were safe and that there was a school shooter, shots were fired, and 4 students were injured thus far.The lockdown lasted about 30 minutes, even though it felt like forever. Our headmaster made his way to our room and explained that the shooter had been caught and we were all going to make our way to the football field.26. How did the writer feel before going to school?A. Relaxed.B. Worried.C. Scared.D. Puzzled.27. What d oes the phrase “sleep in” probably mean in Paragraph 1?A. sleep in bedB. sleep with clothes onC. sleep with face coveredD. sleep longer than usual28. What did the students do when the shooting began?A. Calling the police for help.B. Running away in all directions.C. Fighting back against the shooter.D. Texting their beloved ones about it.29. Where did the writer find safety in the shooting?A. On a football field.B. In a neighboring school.C. In a classroom of her school.D. Back at her own home.30. What can we tell from the story?A. The headmaster didn’t care about his students.B. There was more than one shooter in the killing.C. Not all the 21 students took phones with them.D. The shooter killed himself in the end.B(2019山西太原外国语学校第一次月考)One day on my way home, I heard a little girl’s voice through my phone, “Dear Dad, how I miss you. . . ” Nearly at the same time I said, “You’ve dialed a wrong number. ” because I have only a six-year-old son. I turned it off at once.In the following days, I was called many times. Every time, I felt upset, and sometimes I even refused to answer it. But that day I was so patient that I listened carefully to the end. “Dear Dad, won’t you come back? Mum said it was not a wrong number. I. . . I miss you very much. I know you are very busy, but can’t you kiss your daughter through the phone? ” I was so touched that I gave several kisses through the line. From the other end, I heard the broken sentences, “Thank you. . . Dad. I. . . am so ha. . . happy. . . ”Then came a low voice from a middle-aged woman, “Sorry, sir. I had planned to call you to apologize (道歉) after some time but my daughter was born with a cancer. What’s more, her father was killed in a traffic accident. Every day she h ad to be treated and she was aching so much that she called her father loudly who had ever encouraged her greatly. I could not tell her the truth so I made up a phone number. . . ”“What now? ” I asked eagerly (急切地).“She has gone. . . happily with the phone in her hand, ” she answered.31. The writer told the caller it was a wrong number because .A. he didn’t know the phone numberB. he had no daughterC. his son told him32. Why did the girl call the writer many times?A. Because she did something wrong and she wanted to apologize.B. Because she knew her father was not very busy.C. Because she missed her father very much.33. Which of the following is NOT true about the girl?A. The girl had a serious illness.B. The girl didn’t know her father’s death.C. The girl still lives with her mother happily.34. The last phone was probably called by .A. the doctorB. the girl’s motherC. the girl’s father35. From this passage we know that the writer would feel after hearing the story.A. proudB. excitedC. movedC(2018河南郑州郑东新区实验学校月考)Once a king got two nice falcons(猎鹰)from his son. He had never seen such beautiful falcons before. He loved them so much and he ordered the best falconer to train them to fly.After several months, the king came to see how the training was going on. He found that one falcon had already been able to fly high in the sky, while the other was staying on the branch(树枝)of a tree quietly, just keeping still.The king called all his falconers together and ordered them to try every way they could to make the other falcon fly. But none of them succeeded. One day, while the king was taking a walk in the forest, an idea came to his mind. Maybe someone who knew the natural environment well could solve this problem. He sent for a farmer who lived in the forest into his palace to train it at once.The next morning, the king saw the other falcon flying above in the sky freely. “It is unbelievable!” shouted the king. “How could you make it happen? ”The farmer replied, “It’s very easy. I just cut off the branch where the falcon rested. ”It is always the same to human beings. We all have “two flying wings” in our hearts as well, but we often seem not to notice them and stay where we are just for safety and comfort. We wo n’t realize we can fly so high and freely until the “branch” we are resting on breaks.36. What did the king do after he got two falcons?A. He kept them on the branch of a tree.B. He sent them to a farmer in the forest.C. He made the best falconer train them to fly.D. He set them free and let them fly in the sky.37. Why did the king call all his falconers together?A. Because he wanted to get more falcons.B. Because he wanted the other falcon to fly.C. Because he wanted them to see his falcons.D. Because he wanted to know more about falcons.38. Who finally made the other falcon fly in the sky?A. The king.B. The king’s son.C. The farmer.D. The best falconer.39. How did the king feel when he saw the other falcon fly freely in the sky?A. Excited.B. Moved.C. Worried.D. Relaxed.40. What is the best title for the text?A. The Wise KingB. The Nice FalconsC. The Best FalconerD. The Flying WingsⅣ. 任务型阅读(每小题2分, 共10分)(2018四川凉山州中考)根据短文内容, 从方框中选出能填入空白处的最佳选项, 有两项为多余选项。
人教版九年级英语全册Unit 12单元测试卷(含答案)
精品基础教育教学资料，仅供参考，需要可下载使用！Unit12一.单项选择。
（15分）( )1. —Everyone wants to make money. But _______ me, the most important thing is to be happy.—I agree with you.A. such asB. thanks toC. instead ofD. as for( )2. _______ the time I got outside, the bus had already left.A.ByB. ForC. InD. On( )3. —Germany ended Brazil’s FIFA World Cup dream with a 7-1 semi-final (半决赛) victory.—The result was really ________.A. normalB. generalC. unexpectedD. impossible( )4. —When Miss Wang got to the station, the train had left. She ________ the train.—What a bad luck she had!A. pickedB. missedC. caughtD. lost( )5. _______ I got to the bus stop, the bus had already left.A. BeforeB. AfterC. As soon asD. Since( )6. —Are you going to Sydney by ______ train?—No, I am going to take ________ plane there.A. a; /B. / ; aC. a; theD. the; a( )7. —Mom, shall we have lunch now?—We won’t have lunch _______ your dad comes back.A. untilB. sinceC. whileD. when( )8. —What’s the result of the examination?—The teacher said that ________ of the students had passed the exam.A. four fiveB. fourth fivesC. fourth fifthsD. four fifths( )9. —How is the apple on the table?—It looks really nice, but it ________ sour.A. soundsB. feelsC. tastesD. looks( )10. —It’s time for class. Please stop ________. —Yes, sir.A. talkingB. to talkingC. to talkD. talk( )11. —Please remember to turn off the lights when you leave.—_________.A. Yes, I doB. No, thanksC. OK, I willD. Sorry, I won’t( )12. —Did you see the two boys on the playground?—Yes. But I saw one leave with a bike, and _______ playing basketball alone.A. anotherB. othersC. otherD. the other( )13. —Did you see the basketball star yesterday when he came to visit our school yesterday?—No, when I _____to school, he had already left.A. gotB. getC. had gotD. have got( )14. They were doing homework when the telephone _______.A.ringsB. was ringingC. rangD. has rangA.wentB.have goneC.goneD.had gone二.完形填空(每小题1分，共10分)It was time for a holiday! Dalia wanted to go to the beach, 1 her mum, dad and brother had other ideas. Where would Dalia’s family go on holiday?Suddenly, a golden envelope fell through the letter box. On the front it said “You’ve won!”“ 2 it!”shouted Mum, Dalia and Ahmed. Dad opened it. They had 3 a free holiday.“I hope it’s to the seaside,”said Dalia. “I can swim in the sea and make sand castles.”“No, I hope it’s a camping holiday,”said Dad. “I can sleep in a tent and get lots of 4 .”“No, I’d like to go on a cruise (乘船游览),”said Ahmed. “I can watch the dolphins and eat lots of nice food.”“Well, I’d like to go to a big city,”said Mum. “I can go shopping in the shopping mall and go to the theatre.”Then they started to argue. They couldn’t decide. Beach! Camping! Cruise! City! They argued 5 it was dark outside. Then the phone rang. Dalia answered it. “Hello, this is Lucky Holidays. You’ve won a holiday to sunny Alexandria. ”“That is 6 my grandmother lives.”“This is your grandma!”said Dalia’s grandma.“Oh my dear grandma, you 7 us!”replied Dalia. “You are all invited to spend your summer holiday with 8 ,”said her grandma.They packed their suitcases and spent two 9 weeks at the grandma’s home. Ahmed got his nice 10 . Dad got his fresh air. Mum went shopping and Dalia swam in the sea. Everyone was happy. ( )1. A. so B. or C. if D. but( )2. A. Open B. Close C. Throw D. Burn( )3. A. lost B. won C. discovered D. found( )4. A. fresh fruit B. clean water C. fresh air D. beautiful clothes( )5. A. while B. after C. before D. until( )6. A. where B. when C. how D. who( )7. A. stared B. heard C. fooled D. cancelled( )8. A. them B. you C. her D. me( )9. A. sad B. happy C. believable D. unexpected( )10. A. jacket B. tent C. food D. method三.阅读理解。
九年级英语Unit 12 单元基础测试卷(教师版)
Unit 12 Life is full of the unexpected. 基础测试卷【人教版】温馨提示：本试卷共分第Ⅰ卷和第Ⅱ卷两部分，第Ⅰ卷为选择题；第Ⅱ卷为非选择题；满分为100分，考试时间为100分钟。
请同学们将【答案】写在答题卡上，务必注意你的书写。
第Ⅰ卷选择题Ⅰ.单项选择（15）1.Lucy is shy. She would not invite her classmates dancing with her.A. practiceB. practicesC. practicingD. to practice【答案】D【解析】本题考查固定搭配。
invite sb. to do sth.意为“邀请某人做某事”，故答案为D。
2.（2019湖南长沙长郡教育集团期中）——Mr. Li, I’m sorry! I my English homework at home. ——Don’t forget it to school tomorrow.A.left; to bringB.forgot; to takeC.lost; to bring【答案】A【解析】本题考查动词用法。
句意：——李老师，对不起！我把我的英语家庭作业忘在家里了。
——不要忘记明天把它带到学校来。
表示“把某物遗忘在某处”要用动词leave，表示“带来”要用bring，故答案为A。
3.—I didn’t see you at the beginning of the party last night.— I on my biology report at that time.A.workedB.workC.was workingD.am working【答案】C【解析】本题考查时态。
句意：——昨晚在聚会开始时我没有看到你。
——那个时候我在做我的生物报告。
根据语境得知，是指当时正在做生物报告，故用过去进行时。
故答案为C。
4.（2018吉林中考）While Alan was writing a letter, the children outside.A.playB.were playingC.will play【答案】B【解析】本题考查时态。
人教版初三化学第1-12单元测试题(含答案)
九三班化学第一单元综合检测题（A 卷）答案二、填空题（31分）16．（6分）应取 20 ｍL 的量筒，量液时，量筒必须平放，视线要与 量筒内液体的凹液面最低处保持水平 ；所取液体的实际体积应 < 15ｍL 。
17.（9分）请简要说明下列操作可能造成的不良后果(1) 药液流下腐蚀标签。
(2) 引燃灯内酒精引起火灾。
(3) 液体倒流，沾污试剂或腐蚀橡胶胶帽。
18．（6分）一般不超过试管容积的 1/3 ；这种方法叫 预热 ，加热时应不时地上下移动试管；不可使试管口对着 别人或自己 。
19．（10分）在对蜡烛及其燃烧进行了探究以后，请你填写下列空格： (1) 蜡烛会 浮在水面上 。
结论：石蜡的密度比水 小 。
(2) 分为三层，分别是 外焰 、 内焰 、 焰心 ；可以看到在 a 处的火柴梗的最先碳化。
结论：蜡烛火焰的 外焰 温度最高。
(3) 烧杯内壁出现 水雾 ；振荡后发现 澄清石灰水变浑浊 。
结论：蜡烛燃烧以后的生成物是 水和二氧化碳 。
三、活动与探究（24分）20．（8分）观察蜡烛的燃烧，得出下列结论。
请回答： （1）哪些是不需要燃烧就能观察到的现象（填字母）abdeh ； （2）哪些是需要燃烧才能观察到的现象（填字母） cfgij ； 除此之外，燃烧时你还观察到的现象有（写两个） 火焰分为3层；外层火焰最明亮；（合理即给分）。
21．（16分）请根据在“我们吸入的空气和呼出的气体有什么不同”的活动与探究内容，填写下表第二单元《我们周围的空气》测试题（一）答案21、空气无色供给呼吸（3分，每空1分）点燃加热点燃22、磷+氧气→五氧化二磷氯酸钾→氯化钾+氧气硫+氧气→二氧化硫（6分，每个2分）23、1）试管酒精灯集气瓶2）b 3) B（以上5分，每空1分）4)防止水倒吸，使试管炸裂。
防止生成的气体从长颈漏斗逸出。
（以上4分，每空2分）24、（1）高锰酸钾二氧化锰二氧化碳（2）分解反应（以上4分，每空1分）点燃加热（3）碳+氧气→二氧化碳高锰酸钾→锰酸钾+二氧化锰+氧气（以上4分，每空2分）25、（1）过氧化钠+二氧化碳→碳酸钠+氧气（2）③在常温下反应，不需加热和消耗电能；反应消耗了人体呼出的二氧化碳；（以上5分，每空2分，（2）1分）三、实验探究题（19分）26、1）防止空气进入试管，使测定结果偏低。
A卷 重点题型和基础卷：第十二章 温度与物态变化——单元速记 巧练(沪科版)(原卷版)
2023-2024学年九年级物理全一册单元测试卷（沪科版）第十二章温度与物态变化【A卷·重点题型+基础卷】重点题型归纳题型1：温度与温度计1．下列温度值最接近实际的是（）A．健康成年人的体温约是39℃B．让人感觉温暖而舒适的室内温度约是23℃C．人洗澡淋浴的适宜温度约是70℃D．在一个标准大气压下盐水的凝固点是100℃2．实验室的液体温度计是根据液体的规律制成的。
如图所示，温度计的读数是℃。
3．如图：操作中正确的是图。
其他操作错误的原因分别是（1）；（2）；题型2：判断物态变化及其现象4．“走遍大地神州，醉美多彩贵州。
”梵净山主峰时而薄雾缭绕，时而雾散峰青。
此现象主要包含下列哪两种物态变化（）A．熔化和凝华B．液化和汽化C．汽化和熔化D．凝固和升华5．下列景色形成过程中的物态变化，属于液化的是（）A．鹅塘明梅村山顶树上挂的冰柱B．钟山十里画廊荷叶上晶莹的露珠C．富川麦岭田野里凝重的霜D．姑婆山山顶轻柔的雪6．关于生活现象的解释，下列说法中错误的是（）A．高压锅煮食物熟得快，是因为锅内气压大，沸点低B．人出汗后吹风扇会感觉更凉快，是因为加快了蒸发C．夏天，从冰箱拿出来的饮料瓶外壁会冒汗，这是一种液化现象D．湖南的冬季，窗户上的小水珠常出现在玻璃内侧7．下列物态变化中，属于凝华的是（）A．初春，冰雪消融汇成溪流B．夏天，清晨河面上出现薄雾C．深秋，清晨草叶上出现白霜D．冬天，冰雕没有熔化却变小8．在极度干早的沙漠地区，夜晚气温一直在-15℃左右，落在沙子上的雪很快就消失了，则雪消失发生的物态变化是（）A．汽化B．熔化C．升华D．凝华题型3：物态变化的应用9．中华诗词蕴藏着丰富的物理知识，下列对古诗词中涉及的物态变化解释正确的是（）A．“山明水净夜来霜，数树深红出浅黄”——霜的形成是凝固现象B．“可怜九月初三夜，露似真珠月似弓”——露的形成是液化现象C．“夜阑卧听风吹雨，铁马冰河入梦来”——冰的形成是凝华现象D．“天接云涛连晓雾，星河欲转千帆舞”——雾的形成是汽化现象10．下列物态变化中，吸收热量的是（）A．冰融河开B．清晨结露C．深秋凝霜D．铁水铸锅11．《淮南子》完整记载的“二十四节气”是中华民族智慧的结晶。
初三化学生活中常见的盐单元测试题(A卷)含答案
初三化学生活中常见的盐单元测试题（A卷）含答案一、初中化学生活中常见的盐选择题1．有三瓶失去标签的无色溶液，只知道它们分别是氯化钠溶液、稀盐酸和氢氧化钠溶液中的各一种。
下列四种试剂中，能将上述三种无色溶液一次鉴别出来的是（）A．酚酞试液B．CaCO3粉末C．KNO3溶液D．石蕊试液2．下列化学用语书写正确的是A．钙离子：Ca+2B．纯碱：NaCO3C．3个氢原子：3H D．水中氧元素化合价：H2O-23．要除去下列物质中的少量杂质(括号内物质为杂质)，所选试剂正确的是( )A．KCl溶液(K2SO4)：Ba(NO3)2溶液B．CaCl2溶液(稀盐酸)：AgNO3溶液C．CO2(CO)：NaOH溶液D．Cu粉(Fe屑)：CuSO4溶液4．下表是某同学用多种方法鉴别物质的情况，其中两种方法都正确的是（）A．A B．B C．C D．D5．下列物质能在pH＝1的溶液中共存且形成无色溶液的是（）A．NH4Cl、KNO3、Na2SO4B．K2SO4、NaNO3、KMnO4C．Na2SO4、NaCl、NaHCO3D．BaCl2、NaNO3、K2SO46．下列两种物质的溶液混合后、能发生反应、且溶液的总质量不会发生改变的是A．氯化钠溶液和稀硫酸B．碳酸钠溶液和稀盐酸C．氢氧化钠溶液和稀盐酸D．碳酸钠溶液和氯化钙溶液7．为确定Cu2(OH)2CO3、CuO、Cu混合粉末中各组分的质量分数，化学兴趣小组进行下面两个步骤的实验，每个步骤中均准确称量反应前后装置内固体的质量，已知：Cu2(OH)2CO3受热分解为CuO、CO2和H2O，实验中操作无误，所有反应均充分进行。
下列说法中不正确的是A．根据步骤一反应前后的固体质量，可求得样品中Cu2(OH)2CO3的质量分数B．若步骤二反应后的固体中含有少量水，则测得样品中Cu的质量分数会偏小C．若步骤二中将H2换为O2，也能达到实验目的D．若步骤二改为将步骤一所得固体放入足量稀硫酸中充分反应后，进行过滤、洗涤、干燥，也能达到实验目的8．关于中和反应的说法，错误的是（）A．一定没有沉淀生成B．一定有氧化物生成C．一定是放热反应D．一定是复分解反应9．下列除去杂质的方法正确的是选项物质杂质除杂方法A CaCl2溶液稀盐酸加入过量的CaCO3，过滤B盐酸硫酸加入过量BaCl2溶液，过滤C NaNO3NaCl加入过量AgNO3溶液，过滤D CaO Ca(OH)2加过量水，过滤A．A B．B C．C D．D10．珍珠加入稀盐酸中，有气泡产生，生成的气体使澄清石灰水变浑浊，则珍珠中含有A．氯离子B．硫酸根离子C．碳酸根离子D．氢氧根离子11．盐酸先生闯迷宫（见图），请你帮他选择行进路线（不发生化学反应）。
初三数学第一二单元测试卷
一、选择题（每题4分，共20分）1. 下列数中，有理数是：（）A. √-1B. πC. √4D. 无理数2. 已知数轴上点A的坐标为2，点B的坐标为-3，则AB的长度为：（）A. 5B. 3C. 1D. 23. 下列等式中，正确的是：（）A. 3a + 2b = 3(a + b)B. (a + b)² = a² + b²C. (a - b)(a + b) = a² - b²D. a² - b² = (a + b)(a - b)4. 若方程 2x - 5 = 3x + 1 的解为 x = 2，则 x 的值为：（）A. 1B. 2C. 3D. 45. 在直角坐标系中，点P的坐标为（-2，3），点Q的坐标为（1，-1），则PQ的长度为：（）A. 5B. 3C. 4D. 2二、填空题（每题4分，共20分）6. 若a² = 4，则 a 的值为_________。
7. 若 a = 3，b = -2，则a² - b² 的值为_________。
8. 若方程 2x + 3 = 7 的解为 x = 2，则方程 4x + 6 = 14 的解为_________。
9. 若数轴上点A的坐标为-3，点B的坐标为2，则AB的长度为_________。
10. 若三角形ABC的三个内角分别为∠A、∠B、∠C，且∠A = 60°，∠B = 45°，则∠C =_________。
三、解答题（每题10分，共30分）11. （10分）解方程：3x - 2 = 5x + 1。
12. （10分）计算：(-2)² × 3 - 4 × (-1)。
13. （10分）在直角坐标系中，点A的坐标为（-1，2），点B的坐标为（3，-1），求线段AB的中点坐标。
四、应用题（每题10分，共20分）14. （10分）某工厂生产一批产品，前5天每天生产100件，后5天每天生产120件，求这10天共生产了多少件产品？15. （10分）一辆汽车从甲地出发前往乙地，已知甲乙两地相距400公里，汽车以每小时60公里的速度行驶，求汽车从甲地出发到乙地需要多少小时？。
(外研社版)初中英语九年级上册 Module 12单元测试试卷02及答案
Module 12 Save our world 单元测试第一部分听力（五大题，30分）一、关键词语选择（共5小题；每小题1分，满分5分）（）1. A. factory B. victory C. history（）2. A. voice B. noise C. oil（）3. A. chicken B. china C. child（）4. A. clothes B. bottom C. bottle（）5. A. went out of B. took out of C. got out of二、短对话理解（共10小题；每小题1分，满分10分）（）6. What are they talking about?A. B. C.（）7. What sport does the man probably like best?A. B. C.（）8. What animal doesn’t the woman like?A. B. C.（）9. What did the boy do last night?A. B. C.（）10. Which kind of fruit is the cheapest?A. B. C.（）11. What does the man ask Susan to do?A. Turn off the shower.B. Turn off the lights.C. Turn on the lights.（）12. Why won’t Amy go to Hong Kong on vacation this May Day holiday?A. Because it’s too hot.B. Because it’s too touristy.C. Because it’s too expensive.（）13. How many times have the two speakers been to the space museum?A. Never.B. Twice.C. Many times.（）14. How does the man go to work these days?A. By car.B. By taxi.C. By bike.（）15. Where is the man going?A. To the supermarket.B. To his new house.C. We don’t know.三、长对话理解（共5小题；每小题1分，满分5分）听下面一段对话，回答第16至17小题。
2020秋 第12章 全等三角形 单元测试试卷A (2)
一、选择题 （每题3分，共30分每题只有一个正确答案，请将正确答案的代号填在下面的表格中）题号 1 2 3 4 5 6 7 8 9 10 答案1．下列判断中错误．．的是（ ） A ．有两角和一边对应相等的两个三角形全等B ．有两边和一角对应相等的两个三角形全等C ．有两边和其中一边上的中线对应相等的两个三角形全等D ．有一边对应相等的两个等边三角形全等 2．如图，DAC △和EBC △均是等边三角形，AE BD ，分别与CD CE ，交于点M N ，，有如下结论： ①ACE DCB △≌△；②CM CN =；③AC DN =． 其中，正确结论的个数是（ ） A ．3个 B ．2个 C ．1个 D ．0个 3．某同学把一块三角形的玻璃打碎了3块，现在要到玻璃店去配一块完全一样的玻璃，那么最省事的方法是（ ）A ．带①去B ．带②去C ．带③去D ．带①②③去4．△ABC ≌△DEF ，AB=2，AC =4，若△DEF 的周长为偶数，则EF 的取值为（ ）A ．3B ．4C ．5D ．3或4或5第十二章 全等三角形 单元测试（A ）答题时间:120 满分:150分同学们：一分耕耘一分收获，只要我们能做到有永不言败+勤奋学习+有远大的理想+坚定的信念，坚强的意志，明确的目标，相信你在学习和生活也一定会收获成功（可删除）（第3题）BECD ANM （第2题）（第5题） 5．如图，已知，△ABC 的三个元素，则甲、乙、丙三个三角形中，和△ABC 全等的图形是（ ） A ．甲和乙 B ．乙和丙 C ．只有乙 D ．只有丙6．三角形ABC 的三条内角平分线为AE 、BF 、CG 、下面的说法中正确的个数有（ ）①△ABC 的内角平分线上的点到三边距离相等 ②三角形的三条内角平分线交于一点③三角形的内角平分线位于三角形的内部④三角形的任一内角平分线将三角形分成面积相等的两部分 A ．1个 B ．2个 C ．3个 D ．4个 7．如图，长方形ABCD 沿AE 折叠，使D 点落在BC 边上的F 点处，∠BAF =600，那么∠DAE 等于（ ）A ．150B ．300C ．450D ．6008．如图所示，△ABE 和△ADC 是△ABC 分别沿着AB ，AC 边翻折180°形成的，若∠1∶∠2∶∠3=28∶5∶3，则∠α的度数为（ ） A ．80° B ．100° C ．60° D ．45°9.在△ABC 和△A B C '''中,已知A A '∠=∠,AB AB''=,在下面判断中错误的是( ) A.若添加条件AC A C ''=,则△ABC ≌△A B C ''' B.若添加条件BC B C ''=,则△ABC ≌△A B C ''' C.若添加条件B B '∠=∠,则△ABC ≌△A B C ''' D.若添加条件C C '∠=∠,则△ABC ≌△A B C '''10.如图,在△ABC 中,∠C =90,AD 平分∠BAC ,DE ⊥AB 于E , 则下列结论:①AD 平分∠CDE ；②∠BAC =∠BDE ； ③DE 平分∠ADB ；④BE +AC =AB .其中正确的有( ) A.1个 B.2个 C.3个 D.4个 二、填空题（每题3分，共30）11．如图，AB ，CD 相交于点O ，AD ＝CB ，请你补充一个条件，使得△AOD ≌△COB ．你补充的条件是______________________________．12．如图，AC ，BD 相交于点O ，AC ＝BD ，AB ＝CD ，写出图中两对相等的角______． 13．如图，△ABC 中，∠C ＝90°，AD 平分∠BAC ，AB ＝5，CD ＝2，则△ABD 的面AC ADBD E （第7题）（第8题）第10题积是______．14．如图，直线AE ∥BD ，点C 在BD 上，若AE ＝4，BD ＝8，△ABD 的面积为16，则ACE △ 的面积为______．15．在△ABC 中，∠C =90°，BC =4CM ，∠BAC 的平分线交BC 于D ，且BD ：DC =5：3，则D 到AB 的距离为_____________．16．如图，△ABC 是不等边三角形，DE =BC ，以D ，E 为两个顶点作位置不同的三角形，使所作的三角形与△ABC 全等，这样的三角形最多可以画出_____个．17．如图，AD A D ''，分别是锐角三角形ABC 和锐角三角形A B C '''中,BC B C ''边上的高，且AB A B AD A D ''''==，．若使ABC A B C '''△≌△，请你补充条件___________．（填写一个你认为适当的条件即可）18．如图，如果两个三角形的两条边和其中一条边上的高对应相等，那么这两个三角形的第三边所对的角的关系是__________．19．如图，已知在ABC ∆中，90,,A AB AC CD ∠=︒=平分ACB ∠，DE BC ⊥于E ，若15cm BC =，则DEB △的周长为 cm ．（第16题）DEABCD'A 'B 'D'C （第17、18题） （第19题）20．在数学活动课上，小明提出这样一个问题：∠B=∠C=900，E是BC的中点，DE 平分∠ADC，∠CED=350，如图16，则∠EAB是多少度？大家一起热烈地讨论交流，小英第一个得出正确答案，是______．三、解答题（每题9分，共36分）21．如图，O为码头，A，B两个灯塔与码头的距离相等，OA，OB为海岸线，一轮船从码头开出，计划沿∠AOB的平分线航行，航行途中，测得轮船与灯塔A，B 的距离相等，此时轮船有没有偏离航线？画出图形并说明你的理由．22．如图，在△ABC中，BD=DC，∠1=∠2，求证：AD⊥BC．A BO23．如图，OM平分∠POQ，MA⊥OP,MB⊥OQ，A、B为垂足，AB交OM于点N．求证：∠OAB=∠OBA24．如图，已知AD∥BC，∠P AB的平分线与∠CBA的平分线相交于E，CE的连线交AP于D．求证：AD+BC=AB．PCEDBA四、解答题（每题10分，共30分）25．如图，△ABC 中，AD 是∠CAB 的平分线，且AB =AC +CD ，求证：∠C =2∠B26．如图①，E 、F 分别为线段AC 上的两个动点，且DE ⊥AC 于E ，BF ⊥AC 于F ，若AB =CD ，AF =CE ，BD 交AC 于点M ． （1）求证：MB =MD ，ME =MF（2）当E 、F 两点移动到如图②的位置时，其余条件不变，上述结论能否成立？若成立请给予证明；若不成立请说明理由．D CB A27．已知：如图，DC ∥AB ，且DC =AE ，E 为AB 的中点， （1）求证：△AED ≌△EBC ．（2）观看图前，在不添辅助线的情况下，除△EBC 外，请再写出两个与△AED 的面积相等的三角形．（直接写出结果，不要求证明）：五、（每题12分，共24分）28．如图，△ABC 中，∠BAC =90度，AB =AC ，BD 是∠ABC 的平分线，BD 的延长线垂直于过C 点的直线于E ，直线CE 交BA 的延长线于F ． 求证：BD =2CE ．O E D C B AF E D C BA29.已知:在△ABC中,∠BAC=90,AB=AC,AE是过点A的一条直线,且BD⊥AE于D,CE⊥AE于E.(1)当直线AE处于如图①的位置时,有BD=DE+CE,请说明理由；(2)当直线AE处于如图②的位置时,则BD、DE、CE的关系如何？请说明理由；(3)归纳(1)、(2),请用简洁的语言表达BD、DE、CE之间的关系.参考答案一、选择题1．B 2．B 3．C 4．B 5．B 6．B 7．A 8．A 9.B 10. C二、填空题11．∠A=∠C或∠ADO=∠CBO等（答案不唯一） 1 2．∠A=∠D或∠ABC=∠DCB 等（答案不唯一）13．514．8 1 5．1.5cm 16．4 17．BD=B’D’或∠B=∠B’等(答案不唯一) 18．互补或相等19．15 20．350三、解答题21．此时轮船没有偏离航线．画图及说理略22．证明:延长AD至H交BC于H;BD=DC;所以:∠DBC=∠角DCB;∠1=∠2;∠DBC+∠1=∠角DCB+∠2;∠ABC=∠ACB;所以:AB=AC;三角形ABD全等于三角形ACD;∠BAD=∠CAD;AD是等腰三角形的顶角平分线所以:AD垂直BC23．证明:因为AOM与MOB都为直角三角形、共用OM，且∠MOA=∠MOB所以MA=MB所以∠MAB=∠MBA因为∠OAM=∠OBM=90度所以∠OAB=90-∠MAB ∠OBA=90-∠MBA所以∠OAB=∠OBA24．证明：做BE的延长线，与AP相交于F点，∵PA//BC∴∠PAB+∠CBA=180°，又∵，AE，BE均为∠PAB和∠CBA的角平分线∴∠EAB+∠EBA=90°∴∠AEB=90°，EAB为直角三角形在三角形ABF中，AE⊥BF，且AE为∠FAB的角平分线∴三角形FAB为等腰三角形，AB=AF,BE=EF在三角形DEF与三角形BEC中，∠EBC=∠DFE,且BE=EF，∠DEF=∠CEB，∴三角形DEF与三角形BEC为全等三角形，∴DF=BC∴AB=AF=AD+DF=AD+BC四、25．证明:延长AC至E,使CE=CD,连接ED∵AB=AC+CD∴AE=AB∵AD平分∠CAB∴∠EAD=∠BAD∴AE=AB∠EAD=∠BADAD=AD∴△ADE≌△ADB∴∠E=∠B且∠ACD=∠E+∠CDE,CE=CD∴∠ACD=∠E+∠CDE=2∠E=2∠B即∠C=2∠B26．分析：通过证明两个直角三角形全等，即Rt△DEC≌Rt△BFA以及垂线的性质得出四边形BEDF是平行四边形．再根据平行四边形的性质得出结论．解答：解：（1）连接BE，DF．∵DE⊥AC于E，BF⊥AC于F，，∴∠DEC=∠BFA=90°，DE∥BF，在Rt△DEC和Rt△BFA中，∵AF=CE，AB=CD，∴Rt△DEC≌Rt△BFA，∴DE=BF．∴四边形BEDF是平行四边形．∴MB=MD，ME=MF；（2）连接BE，DF．∵DE⊥AC于E，BF⊥AC于F，，∴∠DEC=∠BFA=90°，DE∥BF，在Rt△DEC和Rt△BFA中，∵AF=CE，AB=CD，∴Rt△DEC≌Rt△BFA，∴DE=BF．∴四边形BEDF是平行四边形．∴MB=MD，ME=MF．（2）成立27．（1）证明：∵DC=1/2 AB，E为AB的中点，∴CD=BE=AE．又∵DC∥AB，∴四边形ADCE是平行四边形．∴CE=AD，CE∥AD．∴∠BEC=∠BAD．∴△BEC≌△EAD（2）△AEC，△CDA，△CDE五、28．证明：因为∠CEB=∠CAB=90°所以：ABCE四点共元又因为：∠AB E=∠CB E所以：AE=CE所以：∠ECA=∠EAC取线段BD的中点G，连接AG，则：AG=BG=DG 所以：∠GAB=∠ABG而：∠ECA=∠GBA (同弧上的圆周角相等）所以：∠ECA=∠EAC=∠GBA=∠GAB而：AC=AB所以：△AEC≌△AGB所以：EC=BG=DG所以：BD=2CE29解：（1）在△ABC中,∠BAC=90°，∴∠BAD＝90°-∠EAC又∵BD⊥AE于D，CE⊥AE于E，∴∠BAD＝90°-∠EAC=∠ACE而AB=AC，于是△ABD全等于△CAE，BD=AE,AD=CE因此，BD=AE=AD+DE=DE+CE（2）DE=BD+CE理由：与（1）同理，可得△ABD全等于△CAE，于是BD=AE,CE=AD，DE=AE+AD=BD+CE（3）当直线AE与线段BC有交点时，BD=DE+CE；当直线AE交于线段BC的延长线上时，DE=BD+CE。
第一学期浙教版初三上册数学第12章综合测试卷
第一学期浙教版初三上册数学第12章综合测试卷一、填空题（共10 小题，每小题 3 分，共30 分）1.抛物线y=3x2−4，y=3(x−1)2与抛物线y=3x2的________相同，________不同．2.有同品种的工艺品20件，此中一等品16件、二等品3件、三等品1件，从中任取1件，取得________等品的可能性最大．3.用“描点法”画二次函数y=ax2+bx+c(a≠0)的图象时，列出了表格：那么该二次函数有最________（填“大”或“小”）值________．4.抛物线y=ax间，其部分图象如图，则以下结论：①b2−4ac<0；②a+b+c<0；③c−a=2；④方程ax2+bx+c−2=0有两个相等的实数根．此中正确的结论有________（填序号）．5.已知抛物线y=x2+bx+c过点(0, 1)和(1, 0)，则b=________，c=________．6.将二次函数y=x2的图象向右平移1个单位，在向上平移2个单位后，所得图象的函数表达式是________．7.y=−12x2+2x+1配方成y=a(x−ℎ)2+k的形式是________．8.二次函数y=x2+4x+3与坐标轴交于A，B，C三点，则三角形ABC的面积为________．9.已知函数y=4x2−4ax+a2−2a+2在0≤x≤2上有最小值3，则a的值________．10.众所周知，手机的电话号码是由11位数字组成的，某人的手机号码位于中间的数字为5的概率是________．二、选择题（共10 小题，每小题 3 分，共30 分）11.下列各式中，y是x的二次函数的是（）A.y=1+√x2+1B.y=x2−(x+1)2C.y=−12x2+3x+1 D.y=x2+1x−212.在一个不透明的口袋中装有巨细，外形等一模一样的5个红球，4个蓝色球和3个白球，则下列事情中，是必然产生的是（）A.从口袋中恣意取出1个，这是一个红色球B.从口袋中一次任取出5个，满是蓝色球C.从口袋中一次任取出7个，只有蓝色球和白色球，没有红色球D.从口袋中一次任取出10个，恰恰红，蓝，白色球三种颜色的球都齐13.要是某种彩票的中奖机会是25%，则下列说法中正确的是（）A.买100张这各彩票，就会中奖25次奖B.买25张这种彩票，就会中1次奖C.买4张这种彩票，就会中1次奖D.每买4张这种彩票，就可能中1次奖14.如图所示是二次函数y=ax2+bx+c图象的一部分，图象过点A(3, 0)，二次函数图象对称轴为直线x=1，给出五个结论：①bc>0；②a+b+c<0；③当时x<1，y随x的增大而增大；④方程ax2+bx+c=0的根为x1=−1，x2=3；⑤4a−2b+c>0此中正确结论是（）A.①②③B.①③④C.②③④D.③④⑤15.设a、b是两个恣意独立的一位正整数，则点(a, b)在抛物线y=ax2−bx的上方的概率是（）A.11 81B.1381C.1781D.198116.已知二次函数y=ax2+bx+c(a>0)议决点M(−1, 2)和点N(1, −2)，交x轴于A，B两点，交y轴于C，则：①a+c=0；②无论a取何值，此二次函数图象与x轴必有两个交点，函数图象截x轴所得的线段长度必大于2；③当函数在x<110时，y随x的增大而减小；④当时−1<m<n<0，m+n<2a；⑤若a=1，则OA⋅OB=OC2．以上说法正确的有（）A.①②③④⑤B.①②④⑤C.②③④D.①②③⑤17.物体在地球的引力作用下做自由下落运动，它的运动纪律可以表示为：s=12gt2．此中s 表示自某一高度下落的隔断，t表示下落的时间，g是重力加快度．若某一物体从一稳定高度自由下落，其运动历程中下落的隔断s和时间t函数图象大抵为（）A. B.C. D.18.要是A(−2, y1)，B(−1, y2)为二次函数y=x2−4x+c的图象上的两点，试鉴别y1与y2的巨细为（）A.y1=y2B.y1>y2C.y1≤y2D.无法鉴别他们的巨细19.随机掷一枚均匀的硬币20次，此中有8次出现正面，12次出现反面，则掷这枚均匀硬币出现正面的概率是（）A.2 5B.12C.23D.3520.二次函数y=x2的图象向右平移3个单位，得到新的图象的函数干系式是（）A.y=x 2+3B.y=x 2−3C.y=( x+3)2D.y=( x−3)2三、解答题（共6 小题，每小题10 分，共60 分）21.已知二次函数y=x2−2x+c的部分图象如图所示．(1)求c的取值范畴；(2)若抛物线议决点(0, −1)，试确定抛物线y=x2−2x+c的函数表达式．22.如图，已知抛物线与x轴分别交与点A、B，与y轴交与点C，根据图象中的信息办理下列标题：(1)求这个二次函数的剖析式；(2)若y随x的增大而增大，则x的取值范畴是________；(3)已知一次函数y=kx+b议决A、C两点，若点P(x1, y1)在一次函数图象上，点Q(x2, y2)在二次函数图象上，当时y1>y2，请直接写出x的取值范畴？23.用如图所示的A，B两个转盘举行“配紫色”游戏（红色和蓝色在一起配成了紫色）．小亮和小刚同时转动两个转盘，若配成紫色，小亮获胜，不然小刚获胜．这个游戏对双方刚正吗？画树状图或列表说明理由．24.某商场一品牌梳妆，销售一件可获利40元，为在十一时期增加盈利，举行促销活动，决定接纳降价措施．根据以往销售阅历及市场观察发觉，每件梳妆降价x（元）与每天的销售量y（件）之间的干系如下表(2)为保证每天能盈利1200元，又能吸引主顾，每件梳妆应降价几多元？25.把巨细和形状完全相同的6张卡片分成两组，每组3张，分别标上1、2、3，将这两组卡片分别插进两个盒子中搅匀，再从中随机抽取一张．(1)请用画树状图的要领求取出的两张卡片数字之和为奇数的概率；(2)若取出的两张卡片数字之和为奇数，则甲胜；取出的两张卡片数字之和为偶数，则乙胜；试剖析这个游戏是否刚正？请说明理由．26.如图，直线y=−34x+3与x轴交于点C，与y轴交于点B，抛物线y=ax2+34x+c议决B、C两点．(1)求抛物线的剖析式；(2)如图，点E是直线BC上方抛物线上的一动点，劈面△BEC积最大时，央求出点E的坐标和△BEC面积的最大值？(3)在(2)的结论下，过点E作y轴的平行线交直线BC于点M，相连AM，点Q是抛物线对称轴上的动点，在抛物线上是否存在点P，使得以P、Q、A、M为极点的四边形是平行四边形？要是存在，请直接写出点P的坐标；要是不存在，请说明理由．答案1.开口偏向，形状巨细极点坐标，对称轴2.一3.小−14.②③④5.−216.y=(x−1)2+27.y=−0.5(x−2)2+38.39.1−√2或5+√1010.11011-20：CDDBD BBBBD21.解：(1)∵抛物线与y轴的交点在x轴下方，∵c<0；(2)∵抛物线议决点(0, −1)，∵c=−1，∵抛物线剖析式为y=x2−2x−1．22.．(3)由图可知，y1>y2时，x的取值范畴是x<0或x>5．23.解：游戏不刚正，理由如下：游戏终于剖析如下：“√”表示配成紫色，“×”表示不能够配成紫色．P（配紫色）=26=13，P（没有配紫色）=46，∵1 3≠23，∵这个游戏对双方不刚正．24.解(1)设每件降低x元，获得的总利润为y元则y=(40−x)(20+2x)=−2x2+60x+800；(2)∵当y=1200元时，即−2x2+60x+ 800=1200，∵x1=10，x2=20，∵举行促销活动，∵每件应降低20元时，商场每天盈利1200元．25.解：(1)画树状图得：，由上图可知，所有等可能终于共有9种，此中两张卡片数字之和为奇数的终于有4种．∵P（取出的两张卡片数字之和为奇数）=49．(2)不刚正，理由如下：由(1)可得出：取出的两张卡片数字之和为偶数的概率为：59．∵4 9<59，∵这个游戏不刚正．26.解：(1)∵直线y=−34x+3与x轴交于点C，与y轴交于点B，∵点B的坐标是(0, 3)，点C的坐标是(4, 0)，∵抛物线y=ax2+34x+c议决B、C两点，∵{16a +34×4+c =0c =3解得{a =−38c =3∵y =−38x 2+34x +3．(2)如图1，过点E 作y 轴的平行线EF 交直线BC 于点M ，EF 交x 轴于点F ， ，∵点E 是直线BC 上方抛物线上的一动点， ∵设点E 的坐标是(x, −38x 2+34x +3)， 则点M 的坐标是(x, −34x +3)，∵EM =−38x 2+34x +3−(−34x +3)=−38x 2+32x ， ∵S △BEC =S △BEM +S △MEC=1EM ⋅OC =12×(−38x 2+32x)×4 =−34x 2+3x=−34(x −2)2+3，∵当时x =2，即点E 的坐标是(2, 3)时，△BEC 的面积最大，最大面积是3．(3)在抛物线上存在点P ，使得以P 、Q 、A 、M 为极点的四边形是平行四边形． ①如图2， ，由(2)，可得点M 的横坐标是2， ∵点M 在直线y =−34x +3上， ∵点M 的坐标是(2, 32)， 又∵点A 的坐标是(−2, 0)，∵AM =√[2−(−2)]2+(32−0)2=√732，∵AM 所在的直线的斜率是：32−02−(−2)=38； ∵y =−38x 2+34x +3的对称轴是x =1，∵设点Q 的坐标是(1, m)，点P 的坐标是(x, −38x 2+34x +3)，则{−38x 2+34x+3−mx−1=38(x −1)2+(−38x 2+34x +3−m)2=734解得{x =−3y =−218或{x =5y =−218，∵x <0，∵点P 的坐标是(−3, −218)．②如图3， ，由(2)，可得点M 的横坐标是2， ∵点M 在直线y =−34x +3上， ∵点M 的坐标是(2, 32)， 又∵点A 的坐标是(−2, 0)，∵AM =√[2−(−2)]2+(32−0)2=√732，∵AM 所在的直线的斜率是：32−02−(−2)=38； ∵y =−38x 2+34x +3的对称轴是x =1，∵设点Q 的坐标是(1, m)，点P 的坐标是(x, −38x 2+34x +3)，则{−38x 2+34x+3−mx−1=38(x −1)2+(−38x 2+34x +3−m)2=734解得{x =−3y =−218或{x =5y =−218，∵x >0，∵点P 的坐标是(5, −218)．③如图4， ，由(2)，可得点M 的横坐标是2， ∵点M 在直线y =−34x +3上， ∵点M 的坐标是(2, 32)， 又∵点A 的坐标是(−2, 0)，∵AM =√[2−(−2)]2+(32−0)2=√732，∵y =−38x 2+34x +3的对称轴是x =1，∵设点Q 的坐标是(1, m)，点P 的坐标是(x, −38x 2+34x +3)，则{−38x 2+34x+3−32x−2=m−01−(−2)x+12=2−22解得{x =−1y =158，∵点P 的坐标是(−1, 158)．综上，可得在抛物线上存在点P ，使得以P 、Q 、A 、M 为极点的四边形是平行四边形， 点P 的坐标是(−3, −218)、(5, −218)、(−1, 158)．。
单元测试卷答案初三数学
1. 若a、b是实数，且a+b=0，则a和b的关系是（）A. a=0，b=0B. a和b互为相反数C. a和b相等D. a和b互为倒数答案：B2. 若x²-3x+2=0，则x的值为（）A. 1B. 2C. 1和2D. 0和3答案：C3. 若m、n是方程2x²-3mx+2n=0的两个实数根，则（）A. m+n=3B. mn=1C. m+n=3，mn=1D. m+n=3，mn≠1答案：D4. 若sin∠A=3/5，cos∠A=4/5，则tan∠A的值为（）A. 12/5B. 5/12C. 3/4D. 4/3答案：A5. 已知三角形ABC中，∠A=60°，∠B=45°，则∠C的度数是（）A. 75°B. 120°C. 105°D. 135°答案：B6. 在梯形ABCD中，AD∥BC，若AD=6cm，BC=8cm，AB=4cm，CD=2cm，则梯形的高是（）A. 2cmB. 3cmC. 4cmD. 5cm答案：B7. 已知函数f(x)=x²-2x+1，则f(-1)的值为（）A. 0B. 1C. 2D. 3答案：A8. 若a、b、c是等差数列的连续三项，且a+b+c=12，则b的值为（）A. 3B. 4C. 5D. 6答案：B9. 已知等比数列的首项为a₁，公比为q，则该数列的前n项和Sₙ为（）A. a₁(qⁿ-1)/(q-1)B. a₁(qⁿ+1)/(q+1)C. a₁(qⁿ-1)/(q+1)D. a₁(qⁿ+1)/(q-1)答案：A10. 已知函数f(x)=x²+2x+1，则f(-1)的值为（）A. 0B. 1C. 2D. 3答案：A二、填空题（每题5分，共50分）1. 若m、n是方程x²-3x+2=0的两个实数根，则m+n=______，mn=______。
答案：3，22. 已知sin∠A=3/5，cos∠A=4/5，则tan∠A=______。
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初三 (上) 12单元测试 (A卷)Ⅰ.选出划线部分发音不同的单词4％［］1.A.while B.beside C.mind D.instruction［］2.A.leaf B.dead C.each D.seat［］3.A.cover B.operate C.shop D.follow［ 4.A.cage B.hate C.jacket D.safelyⅡ.根据要求写出下列各词12％1.leaf______ (复数)2.try______ (过去式)3.get______ (现在分词)4.near______ (副词)5.take______ (过去分词)6.leave______ (现在分词)7.they______ (宾格) 8.have to______ (同义词)Ⅲ.英汉互译10％1.写下，记下来___________________2.务必，务请_____________________3.来，再来_______________________4.一会儿，立刻___________________5.正在那时_______________________6.change one's mind_________________7.the floor of her cage________________8.once a week_____________________9.the air tickets_____________________10.arrive in________________________Ⅳ.完成下列各句12％1.Could you ______ (做点事) for me, please?2.Please clean the floor of her cage ______ (一周一次) .3.He's ______ (前来) to get her quite soon.4.He'll be here ______ (一会儿) .5.You haven't ______ (改变主意) , have you?6.Do you know what time the plane ______ (到达) London.Ⅴ.选词填空18％［］1.I'm going to England next week ______ a holiday?A.forB.ofC.toD.from［］2.We can't take Polly ______ us.A.forB.toC.withD.of［］3.I would love to look ______ her.A.onB.afterC.atD./［］4.I'll take good care ______ her.A.toB.atC.ofD.from［］5.Mrs Green was worried ______ their journey.A.fromB.forC.ofD.about［］6.He'll be here ______ a minute.A.inB.onC.atD.of［］7.If there is _______I can do for you, plaese let me know.A.somethingB.anythingC.nothingD.everything［］8.See you ______ January.A.onB.atC.inD.to［］9.Do you know what time the plane arrives ______ Moscow?A.onB.toC.atD.in［］10.Could you tell me how we get ______ the plane?A.toB.onC.inD.at［］11.Could you do something ______ me, please?A.toB.ofC.forD.from［］12.Where do the Greens stop ______ the way?A.toB.ofC.inD.onⅥ.句型转换12％1.You haven't changed your mind, ______ ______? (完成反意疑问句)2.Mr and Mrs Green were getting ready to fly to England for their holiday.(改为一般疑问句)_____ Mr and Mrs Green _____ ready to fly to England for their holiday?3.Did she like to stay safely in the same place? (做肯定回答)______, ______ ______.4.Was she able to sleep well on the plane? (做否定回答)______, ______ ______.5.I know what time the plane arrives in Paris. (改为一般疑问句)______ ______ ______ what time the plane arrives in Paris?6.We know when we arrive. (改为否定句)______ ______ ______ when we arrive.Ⅶ.用所给动词的适当形式填空12％1.We can't ______ (take) Polly with us.2.I would ______ (love) to look after her.3.You ______ ______ (change) your mind, have you?4.Do you know what time the ship ______ (leave) ?5.Could you ______ (tell) me how we ______ (get) to plane?6.We ______ (not know) when we arrive.Ⅷ.阅读理解20％阅读下面短文，判断句子对错，在正确句子前面括号里写 (T) ，在错误句子前面括号里写 (F) 。
The summer holidays were over. All the children were back to school. On the second day when the bell rang, the teacher came into the classroom and said, "Now, children, today you must write a composition about an interesting film. In an hour's time you musthand in your composition. Now, open your exercise books andbegin. Don't forget that you have only one hour."The boys began to write. An hour passed, and the bell rang.The teacher said. Now,ime is up. Hand in your composition." "Oh," said one of the boys, "I haven't finished," "Show me what you havewritten," said the teacher. The boy gave her his exercise book. Theteacher opened it and read. "It was Sunday. I got up at nine o'clock,I dressed, washed and had my breakfast. After breakfast my motherasked me to buy some bread. On my way to the shop, I saw my friendWang Tong. He asked me to go to the cinema with him. We decided tomeet at six o'clock in the evening. At about two o'clock in the afternoon,I came to the zoo. In the zoo I met some of my friends. We saw manyanimals. We saw a white bear. He was playing in the water. Then we wentto see the monkeys and the wolves, we had a very good time. At four o'clock,I came home and had my supper, "That was all." But you haven't written aboutthe film," said the teacher," You have written what you did in the morning, about the zoo, and many other things, but you haven't said a word about thefilm. "I wanted to write about the film, but the bell rang, and so I had no time." said the boy. "Next time," said the teacher, "keep to your plan, and don't beginwith morning when you must write about the evening."［］1.The summer holidays were over. Some of the children were back to school.［］2.The teacher asked the children to write a compositionabout an interesting film.［］3.The teacher asked the children to write a compositio about the film, holidays' life.［］4.The children had to hand in their compositions in an hour. ［］5.The children had to hand in their compositions in two hours. ［］6.When the bell rang, all the children handed in theirexercise books to the teacher.［］7.When the bell rang, one boy didn't hand in his exercise book. ［］8.The boy did write a composition about an interesting film. ［］9.The boy didn't finish his composition because he didn'tkeep to his plan.［］10.The boy didn't finish his composition because he didn't wantto write about theilm.。