错题整理1
语法复习错题整理1
语法复习错题整理1语法复习错题整理1名词1.----What can I do for you? ----I want to buy some _____ clothes.A. man’sB. newC.menD.men’s2.Class 2 will visit the new ____ factory on Friday afternoon.A. toyB. toysC. toy’sD. toys’3.At the age of eight, Chaplin joined a group of ____.A. children dancersB.child dancersC. child dancerD. children’ dancers4.The fields hospital sent two ____ to the front.A. woman doctorsB. women doctorsC. wemen’s doctorsD.woman’s doctors5.----Do you think picking apples ____?----Yes, but I like it very much.A. is a hard workB. are hard workC. is hard workD.are hard works6.The road is ____ one.A. an 18-meters-wideB. an 18-meter-wideC. a 18-meters-wideD. a 18-meter-wide7.Please get me a new ____ when you go to town.A. clothesB. dressC.clothingD. trousers8.Mary’s and Rose’s____.A. father is a doctorB. fathers are doctorsC.father are doctorsD. fathers are doctor9.In a few ____ time, those moutains will be covered with trees.A. yearB. yearsC.year’sD.years’10.We have already worked out the plan and now we must put it into ____.A. factB.realityC.practiceD.deed11.Professor Ma’s experiment is a great ____.A. succeedB. successC.successfulD. successfully12.The little girl would like some ____.A. fried potatoesB. fring potatoesC. fried potatosD. fring potatos13.----What did you see there?—I saw ____ police.A. muchB.manyC. theD. some14.Thank you for lending me ____. A. your ears B. ears C. an ear D. your ear15.This store sells ____ things.A. woman and childB. woman and ch ild’sC. women and children’sD. women’s and children’s16.When we saw his face, we knew ____news was bad.A.someB. aC. theD. \17.----How many ____ have you got on your farm?----We’ve got five.A. sheepsB. sheepC.pigD. chicken18.The young should make ____ for the old on the bus.A. a roomB. the roomC. roomsD. room代词1.----____of you will go with me?----I will. I have the experience to do that work.A. WhichB. WhoC.WhomD.What2.On ____bank of the river there are trees and flowers.A. eitherB. bothC. anyD. every3.----Are the two answers correct?----No, ____ correct.A. no one isB. both are notC. neither isD. either is4.----How many books have they read this week?----In fact____. They were too busy to read.A. nothingB.no oneC.noneD. no many5.This is the most expensive camera ____ our factory has produced. It can be used in a satellite.A.whichB. thatC.whatD.who6.The population od Shanghai is larger than ____ of Hangzhou.A. itB. whichC. whatD. that7.The teacher asked the boy many qusetions, but he only answered____ of them.A. someB. lotsC. eachD. few8.The letter from his friend was short. There wasn’t ____ news.A. manyB.muchC.fewD.little9.I’m expecting a pet dog for long, but Mom has no time to buy ____ for me.A. itB. oneC. thisD. that10.----Why don’t we take a little break? ---Didn’t we just have ____?A. itB. oneC. thisD. that11.----When shall we meet, this afternoon or tomorrow morning?----____ is OK. I’m free these days.A. BothB.AllC.EitherD.Neither12.----Would you and your family like to go the cncert with me tonight?----I’d love to , but ____ my parents is free.They’re going to an important party.A. bothB.allC.noneD.neither13.----Would you like ____ to drink?----Yes. I’d like a cup of tea.A. something elseB. anything elseC. else somethingD. else anything冠词1.____eleghant is bigger than ____ horse. A. /;/ B. An ; a C The ;a D. An; the2.He prefers playing____piano ____hockey.A. the; theB.the; /C./; /3.Even while he was in ____hospital, he went on studying.A. aB. theC. anD./4.----Have you seen ____ pencil? I left it here this morning. ----Is it ____ red one? I saw it.A. a; aB.the; theC. a; theD.the; a5.The boy beame ____ of their country.A. a kingB. the kingC. kingD. one king6.----Where is ____ English teacher?----He’s talking with Sam’s father.A. aB. the C,an D. /7.The scientists from ____ United States live in ____Ninth Street.A. the; theB. /; theC. the; / D, / ;/8.For me, I think study is ____ important work. A. a B. the C. an D./9.His job is to collect ____information and tell the director.A. aC. anD./10.At that time, Tom was _____one-year-old boy. A. a B. the C. an D./11.We will have _____bluer sky if we create ____ less polluted world.A. a; aB.the; theC. a; theD.the; a12.The young man wishes to be ____.A.Bill GatesB.the Bill GatesC.a Bill GatesD. one Bill Gates13.____wonderful time we had on the farm!A. WhatB. What aC.HowD.How a14.____important news he gave us!A. WhatB. What aC.HowD.How a15.It took me ____hour and ____half to finish homework.A. an; a ; /B.a; a ; aC.an; a; aD. an; a; the16.Do you know____American girl with big earrings?A. aB. theC. anD./介词1.He was sitting there lost____________thought.2.He said he would meet us __________ the cinema.3.We make chairs_______________wood ,and we also make paper __________wood.4.______________hearing the news, he was wild ______________joy.5.The group is made up _________five students. And they are studying hard to make up _________the lost time.6.After the earthquake, the PLA man saved the boy __________death.7.The visitors walked _________the T ian’anmen Square to the Museum of Chinese History.8.She felt disappointed when she found out they had gone swimming _________her.9.Who can tell the difference __________ Picture 1, Picture2 and Picture 3?10.The young singer is very popular __________the public.11.He drove the car ___________90 miles an hour.12.The man changed his blue shirt __________a white one before he went out.13.He divided the sweets __________ the children who were divided __________ three groups.14.Jack knows many other languages _________ English.15.The weahter here changes _________the season.16.The train started and headed _________Beijing.17.The sun was shining brightly __________ the sky.18.What _________ earth are you talking about?19.More than 5 bridges have been built _________ the Qianjing River.20.Though they are different _________ color, they are_________ the same size.21.At the sounds of the gun, the birds flew_________ all directions22.I’ll pick you _________ at your school gate and take you straight to the museum.23.The old man die _________cold _________ a cold night.24.Though they have no interests _________common, but they are friends.25.The public speak highly ___________ the brave man who saved the little boy _________the fire.26.One _________five will have the chance to go to a foreign country.27.For miles around me there is nothing but a desert, withouta single tree _________ sight.28.Would you slow down a bit, please? I can’t keep up _________you.29.That’s a good idea. But who’s going to carry _________ the plan?30.The famous player took _________ football when he was very young.31.Unluckily, Helen was blind _________ both eyes and deaf _________both ears.32.Jim is known _________the public _________a filmstar_________his excellent performance in some films.33.The woman sold the eggs __________seven dollars and they were sold_________half price.34.Please keep an eye_________my baby and I’ll be back soon.35.In 1992, an American explorer, R.E. Byrd, successfully flew _________ the South Pole _________ the first time.36.During we stay in Beijing, we took a great many photos _________the places of interest.37.The plane was able to fly over the endless white plains_________difficulty.38.They found a lonely house _________the foot the hill.39.Soon he was ill _________hospital.40.The man you’re looking for lives_________ the other side of the street.41.I haven’t heard_________ my pepal in England since he wrote to me half a year ago.42.The ball hit Jim _________the face.43.Though I felt very tired, I went on _________my exercise.44.Will you please take a massage _________Mr. Smith?45.–Hurry up, or I’ll go ________you.—I’m coming.数词1、Marks began to foreign languages ___________________.(在他五十来岁时)2、The company developed quikly ___________________. (在二十世纪九十年代)3、The number of the students in our school is about nine _________.(百)_________(三分之二)of them are boys.4、About_________(五分之四)of the books in the world are written in English.5、Nearly ________________ / ______________(四分之三)of the earth ____ covered by sea.6、To English speakers Monday is the____ day in a week, and Thursday is the ____.语法复习错题整理21.Linda read a novel which is written in English, ____? A. doesn’t she B. isn’t she C.didn’t she D.wasn’t she2.----Charlie sends his best wishes.----____.A. Oh, how nice to hear that.B. Why! I didn’t thought of it.C. Aha! That’s a pleasure.D. Oh, that’s nice of jim.3.----You'd better be careful, Betty. The raod is sippery. ----____, Mum.A. I canB. Got itC. I won’tD. It’s impossibel4.Always be willing to listen and listen to all his likes and dislaikes.That’s ____to make friends!A. whyB. whoC. whatD.how5.----Which of the two TV programs do you prefer, Around the World or Wonders in Africa? ----Actually, I don’t like ____of them, because I’m not interested in travel.A. neitherB. bothC.either6.I came to school ____ earlier than T om yesterday. A. a bit ofB. a littleC. a lot ofD. a few7.The match will start at 10pm and you____be late, because you have our tickets.A. needn’tB.musn’tC.won’tD.wouldn’t8.---I’m afraid I can’t get there before 9 o’clock.----That’s OK. There’s____.A.no wonderB. no wayC.no problemD.no hurry9.I was left at his desk and played with his office things ____he worked in the lab.A. the momentB. beforeC.afterD. while10.Both Tom and I were invited to the party, but he didn’t ____. I didn’t see him at the party.A. stand upB. get upC. show upD.turn up11.----What delicious bread! Would you like ____ more?----No, thanks. I’ve had enough.A. a fewC. anotherD. some12.Why not go on vacation with us?If you go, we’ll have ____time.A.much more happierB.a much happierC. a more happierD.more happier13.Don’t woory! I’ll stay with you ____the doctor comes to help you.A. unlessB. untillC.whenD.after14.Mom always ____my friends with kindness and they were always welcome at our house anytime.A. helpedB.treatedC.providedD.gave15.The new coat looked good ____ her. A.in B.on C.with D.for16.If you want to feel better, you need to eat ____.That is , you should eat three balanced meals every day.A. healthyB. healthilyC.quickD. quickly17.----We beat Class Five in the basketball match.----Really?____exciting news!B.How anC. HowD.What an18.I believe my dream ____a writer must ____when I college.A. to become; be come trueB.to become; realizeC.of becoming; come trueD. of becoming; achieve19.----What do you think made Mary upset?--____ her new bicycle.A. Because of losingB. LostC.As she lostD.Losing20.----What did your father ask you just now?----He asked me ____.A. where am I with my friendB. when would I go homeC.whom I was chatting withD. If I have finish my homework21.----My mother hardly watches any sports games. ---____mine.A.So doB. So doesC.Neither doD.neither does22.----Is everything____we need to do____?----Yes. So you needn’t worry about it.A. that; has doneB. which; has doneC.that; doneD.which; done23.----Do you mind if I turn down the radio? It’s noisy. ---____.A. Don’t worry.You’ll get used to it.B. Yes.I don’t mind.C. Sure. Please turn it down.D. Of coursenot. Please go right ahead.24.Thanks to his neighbors, he was sent to the hospital and received an operation just____.A.in timeB.on timeC.at the same timeD. for a long time25.So far, the project has helped over 5,000 people in China ____medical aid.A. receiveB.receivedC.receivingD.receives26.I don’t remember ____I have left my keys.At the office or in my car? A. when B.Why C.Where D.Who27.Good news! They have ____getting to the top of Mount Tai.A. stoppedB.suceededC.startedD.suggested28.----Where is the Bank of China?----Go____the bookstore, and you’ll find it next to the fruit shop.A. passB.throughC.pastD.over29.He was asking money in the snow, moving back and forth to __________ warm.A.makeB. cause/doc/120e1b6ce518964bce847c08.html stD.stay30.He walked with me to the restaurant ane ____the door open for me as we went inA. caughtB. heldC. knockedD.turned31.Lin Shuhao played basketball so well that he b________ the captian on the school team in high school.32.Our government has taken some steps to prevent the price of the house from r________quickly.33.Hey, boys!Don’t run about! Help y________ to some cakes.34.Remenber to drink milk with c________. Make sure it’s fesh and hasn’t gone bad.35.There are three q________in an hour.36.If you feel tired, listen to your favorite music and siang to ________(it; them).37.Think about all those things you would like to have. Do you really need ________(it; them)?38.When prices are l________, people can go to the store with the lowest price.39.While visiting the park, students had their photos t________in the middle of the square.40.That’s not a hard math problem. You can e________work it out as long as you think it over.41.I have made up my m_______ to finish the plan no matter how difficult it is.42.Don’t throw the broken shoes. Repair them and wear them l______.43.I used to take my father’s car to school when it r________.44.F________comes before March.45.It made such a big n________that all of us woke up.46.Teachers are a________ with students who always forget to do their homework.47.I thought I f________my test but I just found out I passed.48.Sally went to England for a holiday and she enjoyed h________ there.49.The class is m________for boys. There are only a few girls in it.50.The cat ever f________off the tree and now it is afraid of climbing the tree.51.The answer to the question is not c_______. You need to think it over.52.This kin d of sweater feels too h______. I’d like something soft.53.The people who work with art and music are e________. They’re never too tired to create something new.54.Before the test, he was c________to pass. In fact, he made it.55.Some students don’t like study because it’s too t________.It makes them tired.56.To make your dream come t________, you should work hard.57.Mr. Li is good at teaching. He is able to make his students l________in class.58.We usually buy bread and cakes in this b_______ our way home.59.You’re late again. What’s your e________for being late this time?60.Alice was the w________of the Speech Competition this year.61.He fell behind the other runners at the b________but came first in the end.62.The Internet is very useful. It p________us with the latest news.63.The bus stop is qiute near, only ten m________walk.64.The book is well w________reading. It gives advice on how to keep fit.65.Mr. Green is learning Chinese as her second l________.66.This is the first floor. He lives u_______, on the second floor.67.it is said that Chinese students are the most h________ one in the world. Maybe that’s why they won the first place in this competition.68.School Ahead!When d________see the sign, they must slow down.69.Doing morning e________is good for our health.70.Look! The word ―visitor‖ e________with ―or‖, not ―er‖.。
2024年上海市英语中考错题整理(1)
上海英语中考错题整理及参考答案(五)一、Choose the best answer.1.The magazine can’t be taken out of the reading room for time being.A.aB.anC. theD. /2.Try to do one thing at time, and do it well.A.aB.anC. theD. /3.Where are two dinner plates in the set? I can only find four.A.otherB. the otherC. anotherD. others4.All the neighbours have pity the poor boy who lives in the garage.A.inB. onC. atD. for5.of these two pairs of trousers looks good on me. Can you show me another pair?A.BothB. AllC. NoneD. Neither6.We questioned two people, but of them was the missing person.A.neitherB. noneC. bothD. all7.People use public transportation if they don’t wear masks or show the QR codes.A.mustn’tB. wouldn’tC. needn’tD. couldn’t8.he finish this task without any help in two days?A.MayB. CanC. Ought toD. Need9.They argued among and finally drew a conclusion.A.themB. theirC. theirsD. themselves10.The bund is always crowded with people the nights of National Day.A.atB. forC. inD. on11.The underground was so crowded that I could find space on it.A.fewB. a fewC. littleD. a little12.The West Belfast School was just a single classroom with only students when it first opened in 1971.A.littleB. fewC. a littleD. a few13.The farmer raised plenty of on his farm to sell for food and money.A.sheepB. cowC. pigD. chicken14.They are eager to know they may keep the book from the new library.A.how longB. how fastC. how soonD. how often15.In the past several months a new munity park and will be open to the public soon,A.is builtB. was builtC. has been builtD. will be built16.Mun was surprised to find her little son all her suitcases already.A.was packing B,.has packed C. had packed D. would pack17.Like all Greeks, she the legend of Odysseus since childhood.A.knowsB. knewC. has knownD. will know18.Johnny with a host family for two years. Now he’s used to the life in America.A.staysB. would stayC. is stayingD. has stayed19.In recent years, natural disasters great damage to many tourist attractions.A.will causeB. have causedC. had causedD. were causing20.Tracy suggested to the countryside to breathe fresh air at weekends.A.to driveB. drivingC. driveD. drives21.The government suggests people the Spring Festival in their working place this year.A.to spendB. spendC. spendingD. will spend22.Tracy saw there a necklace and a pair of earrings in the giftbox.A.isB. wasC. beD. will be23.great fun it is to pay a visit to the Science and Technology Museum at weekends!A.HowB. WhatC. What aD. What an二、plete the sentences with the given words in their proper forms.1. The play got good and quickly became wellknown. ( review )2. His heavy illness caused him to lose his . ( memorize )3. The students felt extremely tired because the lecture was nearly three hours in . ( long )4. When you the way your parents deal with the problem, you can offer yours. ( like )5. We celebrated the birthday of the munist Party of China on July 1, 2021. ( hundred )6. The captured the city of Troy through a trick. ( Greek )三、plete the sentences as required.1.Let’s take a short walk along the road after dinner and enjoy the cool wind. (改为反义疑问句)Let’s take a short walk along the road after dinner and enjoy thecool wind,?2.Jenny hardly has coffee with milk in it. (改为反义疑问句)Jenny hardly has coffee with milk in it,?3.Mr Li is very kind. He has never lost his temper. (改为反义疑问句)Mr Li is very kind. He has never lost his temper,?4.Kitty never reads detective stories before going to bed. (改为反义疑问句)Kitty never reads detective stories before going to bed,?5.Double reduction policy has enabled students to have more time to develop their interest. (改为反义疑问句)Double reduction policy has enabled students to have more time to develop their interest,?6.Linda kept practicing so that she could remember all the lines in the play. (保持句意基本不变)Linda kept practicing to remember all the lines in the play.7.My teacher asked Tim, “ How do you get on with others? ” (保持句意基本不变) My teacher asked Tim he on with others.8.The bus driver should take charge of all the passengers’ safety. (保持句意基本不变)The bus driver should be all the passengers’ safety.9.Jason happened to meet his class teacher when he walked to the park. (保持句意基本不变)Jason happened to meet his class teacher when he walked to the park .e your mind, and you will work out the solution by yourself. (保持句意基本不变)Use your mind, and you will work out the solution by yourself. 11.The big house cost the Smiths one million dollars. (保持句意基本不变)The Smiths the big house one million dollars.12.Tina managed to create her first ic strips without any help. (保持句意基本不变) Tina creating her first ic strips without any help.13.To add variety, some frames in ic strips are left without borders. (对画线部分提问)some frames in ic strips left without borders.14.The children in Tom’s village used to go fishing by the river. (对画线部分提问)the children in Tom’s village used to go fishing?15.“ Don’t forget to close the windows before you leave,” said Mr Thompson to his son. (改为间接引语)Mr Thompson reminded his son to close the window before . 16.“ Have you finished reading the ic strips? ” Lucy asked the students. (改为间接引语)Lucy asked the students they finished reading the ic strips.17.The senior officer said to the soldiers, “Don’t fire without my permission.” (改为间接引语)The senior officer the soldiers to fire without my permission.18.“When will we leave tomorrow morning?” Sophia asked her friends. (改为间接引语)Sophia asked her friends when leave tomorrow morning.19.“ Which country will hold the next Olympic Games? ” My son asked me. (改为间接引语)My son asked me which country the next Olympic Games.20.It should be Tim’s turn to clean the classroom after school today. (对画线部分提问)turn it be to clean the classroom after school today?21.You can press the ESC button to exit the programme. (对画线部分提问)can I press to exit the programme?22.The students at Mayfield School publish the school newspapers once a month. (改为被动语态)The school newspapers once a month by the students at Mayfield School.23.Miss Yang asked Tim, “ Do you plan to go abroad to further your study?” (合并为一句)Miss Yang asked Tim he to go abroad to further your study. 24.Will we have an autumn outing next week?Please tell me. (合并为一句) Please tell me we have an autumn outing next week.上海英语中考错题整理(五)参考答案一、Choose the best answer.15 C A B B D610 A A B D D1115 C D A A C1620 C C D B B2123 B B B二、plete the sentences with the given words in their proper forms.1.reviews2. memory3. length4. dislike5.hundredth6. Greeks三、plete the sentences as required.1. shall we2. does she3. has he4. does she5. hasn’t it6. in order/ so as7. how got8. responsible for9. on foot 10. If you 11. purchased / bought for12. succeeded in 13. Why are 14. Where did15. his left / his leaving 16. if / whether had 17. told/ordered not18. they would 19. would hold 20. Whose to21. Which button 22. are published 23. if planned24. If/whether will。
牛客网前端刷题错题整理(一)
⽜客⽹前端刷题错题整理(⼀)错题回顾与总结前⾔看到朋友圈满天飞的内推和暑假实习⽣招募信息才恍然⼤悟已经⼤三下了,就⼜到了实习季了。
看到⾼中计算机专业的好友在⽜客⽹上刷了刷题,于是⾃⼰也想去试试。
做了⼆⼗道简单的选择题没想到正确率有75%还算不错?但是还是感觉⾃⼰这块的基础知识有待加强,故打算今天开始多点看基础知识,复习同时多刷题,也做好每次的错题整理。
正⽂1. 新窗⼝打开⽹页⽤到以下哪个值()A._selfB._blankC._topD._parent正解:B解析:例如<a href="/XXXX" target="_blank" >打开新的⽹页</a>值描述_blank新窗⼝打开被链接⽂档(对web来说就是⽹页)_self在相同的框架(⼀般编写中⼀个html⽂件就是⼀个框架)中打开(默认)_parent在⽗框架打开_top清除所有的框架,并在⽗⼦关系中最⾼的祖先框架中打开(也可以理解是清理了所有框架之后直接在本⽹页打开,对于没有parent的框架来说就相当于_self的效果)framename在指定的框架中打开2. flash和js通过什么类如何交互?正解:ExternalInterface解析:Flash(编写flash的语⾔为action script,即AS,与js语法风格相似)提供了ExternalInterface接⼝与JavaScript通信,ExternalInterface有两个⽅法,call和addCallback:ExternalInterface.addCallback("在js⾥可调⽤的flash⽅法名",flash内⽅法) //在flash中通过这个⽅法公开在js中可调⽤的flash内的⽅法;ExternalInterface.call("js⽅法",传给js的参数) //在flash⾥调⽤js⾥的⽅法3. 下述有关css属性position的属性值的描述,说法错误的是?A.static:没有定位,元素出现在正常的流中B.fixed:⽣成绝对定位的元素,相对于⽗元素进⾏定位C.relative:⽣成相对定位的元素,相对于元素本⾝正常位置进⾏定位D.absolute:⽣成绝对定位的元素,相对于 static 定位以外的第⼀个祖先元素进⾏定位正解:B解析:值描述absolute相对于static定位以外的第⼀个⽗元素进⾏定位fixed相对于浏览器窗⼝进⾏定位relative相对于其正常位置进⾏定位static默认值,按照⽂档流出现在正常位置inherit继承⽗元素中的position值inherit继承⽗元素中的position值值描述4. 下⾯有关浏览器中使⽤js跨域获取数据的描述,说法错误的是?A.域名、端⼝相同,协议不同,属于相同的域B.js可以使⽤jsonp进⾏跨域C.通过修改document.domain来跨⼦域D.使⽤来进⾏跨域正解:A解析:只要协议、域名、端⼝有任何⼀个不同, 都被当作是不同的域。
数学小报错题收集
好的,以下是一些常见的数学小报错题:
1.计算错误:在计算过程中,学生可能会犯一些简单的计算错误,例如加法、
减法或乘法运算错误。
2.单位换算错误:学生可能不熟悉单位换算,导致在解题时出现错误。
3.代数错误:学生在代数表达式中可能会犯错误,例如变量代入错误或符号错
误。
4.几何错误:学生在几何图形中可能会犯错误,例如角度、边长或面积计算错
误。
5.逻辑推理错误:学生在逻辑推理中可能会犯错误,例如因果关系错误或推理
过程不严密。
6.概念理解错误:学生对数学概念的理解可能不准确,导致在解题时出现错误。
7.遗漏重要信息:学生在解题时可能会忽略重要信息,导致解题思路不完整或
解题结果不正确。
8.表达不清晰:学生在解题时可能无法清晰地表达自己的思路或答案,导致读
者无法理解。
9.格式错误:学生在书写答案或答题卡时可能会犯格式错误,例如小数点位置
错误或排版混乱。
10.时间管理不当:学生在考试时可能会因为时间管理不当而导致题目没有做完
或答题时间不够用。
高中化学错题精集1
高中化学错题集例题1、在某100ml的混合液中,硝酸和硫酸的物质量浓度分别是0.4mol/L,0.1mol/L,向该混合液中加入 1.92g铜粉,加热,待充分反应后,所得溶液中铜离子物质量浓度是(mol/L):A 0.15B 0.225C 0.35D 0.45容易错选答案为A错误原因:根据反应:3Cu + 8HNO3 = 3Cu(NO3)2 + 2NO + 4H2O,题目中给出的硝酸的物质的量为0.04mol,因此,参与反应的铜的物质的量为0.015mol,因此答案为A。
解题时忽略溶液中仍然存在H+,在该条件下,生成的Cu(NO3)2中的硝酸根离子要和铜继续反应。
正确解答思路为:根据3Cu + 8H+ +2NO3- ==3Cu2+ +2NO +4H2O3 8 2 30.03 0.06 0.04 XX=3*0.6/8=0.0225mol因此,铜离子浓度为0.225MOL/L例题2、为了测定某铜银合金成分,将30g合金完全溶于80ml13.5mol/L的浓硝酸中,待反应完全后,收集到6.72L气体(标况),并测得溶液中H离子浓度是1mol/L.假设反应后溶液体积仍为80ml,求合金中银的质量分数.错解:假设银的质量分数为X,则:Ag + 2HNO3 = AgNO3 + NO2 + H2O30X /108 60X/108 30X/108Cu + 4HNO3 = Cu(NO3)2 +2NO2 +2H2O30(1-X)/64 120(1-X)/64 60(1-X)/64根据气体体积关系有: 30X/108 + 60(1-X)/64=0.3,解得X或根据HNO3量的关系有:60X/108 +120(1-X)/64=0.08*(13.5-1),解得X错误原因:没有考虑到硝酸浓度的变化。
正确解答为:假设铜、银的物质的量依次为X、Y,则有64X+108Y=30(固体质量关系)2X+Y+0.3=0.08*(13.5-1)(硝酸中N的守恒),从而得到X=0.1mol,即银的质量为23.6g 质量分数为78.7%例题3、标准状况下,往100mL 0.2mol/L的FeBr2溶液中通入一定体积的Cl2,充分反应后,溶液中有50%的Br-被氧化。
三年级下册数学错题集一
1、从
2、5、7这三个数字中选出两个数字组成的最大两位数和最小两位数的积是()
2、奶奶两分钟走188米,照这样计算,她从家去超市需要走15分钟。
奶奶家距离超市()米。
3、29×11约等于(),28×19约等于(),78×61约等于()
4、竖式计算。
260÷3= 816÷8=
5、脱式计算。
85÷5×42 700-300÷4
6、6×16如果积是三位数,那么里最大填(),如果积是四位数,那么里最小填()。
7、小马虎列竖式计算,两位数乘两位数,一个乘数是12,他把另一个乘数个位上的数抄写正确,但把十位上的3抄成了8。
,小马虎,算出的得数比正确的结果相差()
8、同学们排队做操,小明站在队伍中,从前数第7个,从后数第12个。
从左数第13个,从右数第14个的位置上。
如果每行的人数相同,每列的人数也相同,那么一共有()人
9、÷6。
要使商中间有0),里最小填()。
高二错题集一
错题集一姓名:日期:1.集合A=,B=,C=,D=,若a,b B,则有()A. a+b AB. a+b BC. a+b CD. a+b D2. 已知f(x)是定义在R上的偶函数,当x>0时,f(x)是增函数,若,则下列各式中一定恒成立的是()A. f()+ f()>0B. f()+ f()<0C. f()+ f()>0D. f()- f()<03.等比数列a+,a+,a+的公比是 .4.y=2sin(-3x+)的增区间是 .5.已知函数f(x)的图像如图所示,下列数值排序正确的是(A. 0<<<B. 0<<<C. 0<<<D. 0<<<6.已知k<-4,则函数y=-2的最小值是 .7.已知函数f(x)=,当x=2时取得最大值,则f(1)+ f(2) + f(3)+…+ f(2018)的值为 .8.函数y=cosx|tanx|(0,x)的图像是( )9.在ABC中,角A,B,C所对的边分别为a,b,c,且,,则的值为 .10.在平面直角坐标系中,O为原点,A(-1,0),B(0,),C(3,0),动点D满足,则的最大值是 .11.已知函数,x=-为零点,x=为y=图像的对称轴,且在(,)上单调,则的最大值为()A. 11B. 9C. 7D. 512.已知函数f(x)满足f(x+1)=若f(0)=2006,则f(2005)= .13.已知函数f(x)=2sin()图像的一个对称中心为(,)其中为常数,且,若对任意的实数x,总有f()f(),则的最小值是 .14.在ABC中,若-•=•-•,则ABC是()A. 等边三角形B.锐角三角形C. 直角三角形D. 钝角三角形15.若a,b 是非零向量且满足(a-2b)⊥a,(b-2a)⊥b,则a与b的夹角θ的大小为 .16.若cos(α-β)=,cos2α=,并且α、β均为锐角且α<β,则α+β的值为 .17.在ABC中,AB=3,AC边上的中线BD=,•=5,则AC的长为 .18.在平行四边形ABCD中,AD=1,∠BAD=60°,E为CD的中点,若•=1,则AB的长为 .19. 在ABC内有一点O,且满足+2,则= .20.若M为ABC所在平面内一点,且满足()•()=0,则ABC 形状为()A. 等腰三角形B.直角三角形C. 正三角形D. 等腰直角三角形21.已知A,B均为钝角,sinA=,sinB=,则A+B的值为 .22.若sinθ,cosθ是方程4的两根,则m的值为 .。
第一单元错题汇总
第一单元错题汇总一、判断题1.圆的周长总是半径的∏倍。
()2.圆的直径扩大到原来的2倍,周长也扩大到原来的2倍。
()3.半圆的周长就是圆周长的一半。
()4.半圆的面积就是圆面积的一半。
()5.两端都在圆上的线段中,直径最长。
()6.半径的长短决定圆的大小。
()7.两个圆的半径比是2:3,周长的比和面积的比都是2:3。
()8.半径的长度是直径的二分之一。
()9.周长相等的两个圆,面积也一定相等。
()10.圆是轴对称图形,直径是圆的对称轴。
()二、选择题1.甲圆的半径是乙圆半径的3倍,甲圆的周长是乙圆周长的()倍,甲圆的面积是乙圆面积的()倍。
A、3B、6C、92.车轮滚动一周走过的路程是车轮的()。
A、半径B、直径C、周长3.()不能决定圆的大小。
A、圆心B、圆的直径C、圆的周长4.圆周率()。
A.大于3.14 B.等于3.14 C.小于3.145.圆和正方形的周长相等时,比较它们的面积()。
A.圆大 B. 正方形大 C.无法确定三、计算题1.画一个直径为4cm的圆,并求出各圆的周长和面积。
2.一个环形铁片,外圆半径是7厘米,内圆半径是3厘米。
它的面积是多少平方厘米?3.有一个运动场,两端是半圆形,中间是长方形。
它的周长和面积各是多少?4.一辆甲种自行车车轮的外直径约64厘米,是乙种自行车车轮外直径的16/17。
(1)甲种与乙种自行车车轮周长的比是多少?(2)乙种自行车车轮转一周比甲种自行车多行多少厘米?5.在一块长方形的空地上造一个面积最大的圆形花坛,这个花坛的占地面积是多100m64m少?6.一个圆形的水池,要在它的周围铺一条宽1m 的小路。
小路的面积是多少平方米?7.一个圆形花坛,原来直径是15米,扩建后的直径与原来的比是4:3。
扩建后花坛的周长和面积各是多少?8.求第一个图形阴影部分的面积,求第二个图形的周长。
.9、一个圆形铁皮水桶的底面直径是4分米,要给它换上一个新底,再把这个桶用铁丝围上3圈,至少需要多大面积铁皮?需要多少分米铁丝?10、一个圆形喷水池的直径是 4m ,沿着它四周铺设了一条宽1m 的小路,小路的面积有多大?6m8m8dm周末作业一姓名:家长签名:一、计算3.14×2= 3.14×3= 3.14×5= 3.14×6= 3.14×7= 3.14×8=3.14×9= 112= 192= 122= 132= 142= 152= 162= 172= 182=二、公式半径和直径的关系:圆的周长公式:圆的面积公式:环形的面积= 半圆的周长= 半圆的面积=1.一个圆形游泳池的半径是20米,绕游泳池跑一周是( )米,游泳池占地( )平方米。
三下数学应用题错题整理(1)
21、某筑路工程队 6天完成了 420米筑路任务, 照这样的速度,5天还能完成多少米 ?
1)、画图表示:
2)、购买成人票需要多少元 ?
3)、一共花了多少元 ?
2)、综合算式计算:
22、河西纸本厂要装订一批日记本,原计划每天 装订 120本,8天装订完 。现在要求 6天装 订完,那么平均每天装订多少本 ?
14、我们两人每人收集了 2本邮票,一共 640 张,平均每本有邮票多少张 ?
11、公园里,每辆缆车限乘 4人,笑笑排在第 5
个,应坐第(
)辆车 。
奇思排在第 15个,应坐第几辆车 ?
15、学校图书馆买了 3套精装四大名著,共用去 360元,平均每本书的价格是多少元 ?
淘气排在第 52个,应坐第几辆车 ?
2、 王老师带 1000元钱买了 8个篮球后还剩下 40元,平均每个篮球多少元 ?
3、 妈妈买一套衣服花了 480元,上衣的价钱是 裤子的 3倍 。上衣和裤子各多少钱 ?
7、 有大小两个书架,大书架上书的本数是小书 架的 5倍 。如果从大书架上取 150本书放到 小书架上,这时两个书架上书的本数相等 。
走了 600米,他从第 1根电线杆走到第 8根 电线杆,一共走了多少米 ?
34、一个正方形喷水池的周长是 20米,它的边 长是多少米 ?面积是多少平方米 ?
30、王阿姨家有三口人,上个星期共支出生活费 462元,平均每人每天的生活费是多少元 ?
35、一个长方形桌子的长是 6分米,宽是 4分米,
两张这样的桌子拼在一起,可以怎样拼 ?面 积和周长分别是多少 ?
23、学校栽了一些盆花 。如果每个教室放 3盆, 可以放 24个教室 。如果每个教室放 4盆, 可以放多少个教室 ?
初一下错题综合1-数学
错题练习11、计算题:(1)(6-8k)(-8k-6) (2)(-b+c)(b-c)(两种解法)(3)(x²+y²)²(x²-y²)²(两种解法)(4)10x360²+10x240²(5)8x555²-8x355² (6)分解因式2a²-18(7)10³+11³+12³+13³+14³(8)(998²-4)(1002²-4)2、如图:将直角三角形ABC沿BC方向平移到△DEF的位置,AB=12,DH=5,平移距离为8,求阴影部分的面积。
3、如图1,将A1A2向右平移3个单位到B1B2,得到封闭图形A1A2B2B1(即阴影部分);在图2将折线A1A2A3向右平移3个单位到B1B2B3,得到封闭图形A1A2A3B3B2B1(即阴影部分),A2 B2 A3 B3图1 图2 图3(1)在图3中,请你类似地画一条有三个折点的折线,同样向右平移3个单位,从而得到一个封闭的图形,并用阴影表示。
(2)请你分别写出上述三个图形中阴影部分的面积(设长方形的场均为a,宽均为b);S1= , S2= ,S3= .(3)如图4,一块长方形的草地,长为20m,宽为10m草地上有一条弯曲的小河(小河任何地块的宽度都是2m),小河所占的面积为㎡(4)如图5,若在图4的草地上又有一条弯曲横向的小河(小河任何地块的宽度都是2m),小河所占的面积为㎡图4 图54、小明在一道题:如图1直线a,b所成的角跑到画板外面去了,你有什么办法量出这两条直线的所成角的度数;(1)请帮小明在图2的画板内画出你的测量方案图,并简要说明。
图1 图2(2)说出画法依据的定理。
5、沿图1中的虚线将大长方形平均分成四小长方形,然后图2所示的方式拼成一个正方形。
(1)图2中的阴影部分的面积为(以幂的形式表示);(2)观察图2,请你写出代数式(m+n)²,(m-n)²,mn之间的等量关系式。
错题集锦(1)
+错题集锦《中考说明》姓名分数一选择题1 _____ the teachers in their school is about 200 and one fourth of them are ___ teachers.A .A number of ; women B.A number of ; womanC.The number of ; womenD.The number of ;woman2 – What’s your ____ for the coming summer vacation?-- I haven’t decided yet.A.planB.ideaC.report D decision3 For my homework I have to write a(n) _____ about the wonders of the world.A.musicB.picturepositionD.exam4.—Would you be so kind as to give me a ____? I’m too tired to walk any farther.-- I am sorry, but the car is too crowded.A.placeB. roomC.seatD.drive5.British people like eating ___, and they are usually cooked by different ways.A.potatoes B fish C.chicken D.beef6.The man tried several ____ to start the car, and he succeeded in the end.A.wordsB.timesC.places D actions7. The students of Grade 7 visited Mike’s farm and saw many ____ there.A.birdB.duckC.sheepD.rabbit8.The film Lost in Thailand is such ___ wonderful New Year’s greeting that I want to see it ____ second time.A.a;aB.a;theC.\;theD.\;a9. – How about ___ charity show?-- I should say it was ___ success.A.a;\B.a;a C the;\ D. the;aAttention,please._____ “h”in the word “honest” is silent. You can’t lose it.A.AB.AnC. TheD. \10. _____ Great Wall is ___ longest wall in the world.A. The; aB. A ; \C. A ; theD. The; the11. This is ___ useful book, I have read it for ___ hour.A. a ; aB. the ; theC. a ; anD. the ; a12. It’s well- known that ____ earth goes around ___ sun.A. a ; theB. a ; \C. the ; theD. \ ; the13. On ____ sunny afternoon, my parents and I had a good time on the beach.A. theB. anC. aD. \14. – There’s ____ book on the shelf. Would you please get __ book for me?-- I don’t think that’s a good idea.A. a; theB. the; aC. a ; aD. the ; the15. – Have you brought _____ with you? We won’t have time to come back.-- Don’t worry. All the things we need are here in this big bag.A. somethingB. anythingC. everythingD. nothing16. There are many shops on ___ side of the street ____ of them don’t close until 12:00 at night.A. both ; AllB. every; NoneC. either ; SomeD. other ; Many17. – I’m so thirsty ___ bottle of orange?-- Of course you can!A. anotherB. otherC. othersD. the others18. – Who will send you to the new school, your mom or your dad?-- _____ . I’ll go there alone.A. BothB. EitherC. NeitherD. None19. – Can you come on Monday or Tuesday?-- I’m afraid ____ day is possible.A. neitherB. eitherC. someD. any20. – Would you like to go to the concert with me tonight?-- I’d love to, but ____ of us couple have tickets. Do you have some?A.bothB. allC. neitherD. None21.-- Which do you prefer, beef noodles or chicken noodles?-- _____, I like tomato noodles better.A.BothB. NeitherC. EitherD. None22.-- What’s the low-carbon life style like?-- Save _____ energy, produce ____ carbon.A.more ; moreB. less ; moreC. less ; lessD. more ; less23.Is this a photo of your daughter? She looks ____ in the pink dress !A.lovelyB.quietlyC. politelyD. happily24.Tom goes to school twenty minutes ____ than his classmates.A.earlierB.earliesttertest25.I really want to know if Susan is the second ____ in her class.A.fatterB.fatC.fattestD.the fattest26.Great! She can dance ____ her teacher.A.as well asB.so good asC.more better thanD.more worse than27.Look! There are two books on the desk, and the math book is ____ of the two.A.newB.newerC. the newerD. The newest28.The city we are living in is getting _____ these years, it’s like a big garden.A.more and more beautifulB.more beautiful and more beautifulC.less and less beautifulD.much beautiful29.China has a ____ population than any other country in the world.A.biggerB.lessC.fewerrger30.Do you know the proverb”The best hearts are always ____ of all”?A.clevererB.the cleverestC.braverD. The bravest31.After his wife died, the old man lived in the town ____, but he didn’t feel ___.A.lonely ; lonelyB.lonely; aloneC.alone ; lonelyD.alone; alone32.Bob always gets good grades, because he goes to the school library ____ than any other student in his class.A.oftenerB.more oftenC.less oftenD.often33.-- Waiter, could you tell me which room I live in ?-- Oh, sorry, Sir. You live in _____.A.the Room 103B.the 103 RoomC.103 RoomD.Room 10334.-- Mum, what time is it? I’m so tired.--It’s _____. You’d better go to bed.A.ten past halfB.ben thirtiethC.ten thirtyD.ten and thirty35.-- Do you know when Tom began to study English ?-- Yeah. He began to study English in his _____.A.twentyB.twentiesC.twentiethD.the twentieth36.If you try to sit on two chairs, you will fall _____ them. For life, you must choose one chair.A.betweenB.underC.amongD.into37.-- How beautiful Sandy looks ____ blue!-- I’m sure this blue skirt will look nice ___ you, too.A.on ; inB.for ; onC. in ; onD.to ; in38.My son is only six months ,he can ____ read ____ write.A.not only...but alsoB.neither ...norC.either...orD.both...and39.I’m not interested in music,______, I have to play the violin every day.A.butB.howeverC.andD.though40._____ you don’t go to bed earlier, you will feel tired in the morning.A.UnlessB. IfC. ThoughD. Until41.”All ____ present and all ____ going on well.” said the teacher.A.is ; areB. is ; isC.are ; areD.are ; is42.He’ll send us a message as soon as he ____ there.A.will arriveB.arrivesC.is arrivingD.arrived43.Our teacher is strict with us, she keeps us ____ English every morning.A.readB.readingC.readD.to read44.There ____ lots of fish in this river years ago.A.isB.areC.wereD.was45.-- How are the teams playing ?-- They are playing well but one of them ____ hurt .A.gotB.getsC.areD.were46.-- Can I join the club, Dad?-- You can when you ______ a bit older.A.getB.will getC.gotD.are getting47.The class begins. Please keep _______.A.silentB.silenceC.the silenceD.silently48.It was a terrible accident. Ten died,and all the rest ____ badly.A.was injuredB.were injuredC.was hurtD.hurt49.I bought some CDs for my friend and they ____ me 30 Y uan.A.costB.paidC.spented50.Please write to me as soon as you ___ Shanghai.A.arriveB.reachC.gote51.She says he doesn’t feel like _____ out with you.A.goingB.to goC.goneD.went52.The 2010 Guangzhou Asian Games was ___ from Nov.12 to Nov.27.A.expectedB.examinedC.achievedD.held53.-- Look! The man at the gate ___ be our headmaster. He is always standing there every morning .-- No, it ____ be him. He is holding a meeting in the office now.A.must, can’tB.must, mustn’tC.can , can’tD. Can , mustn’t54._____ you like to have a walk with us this evening?A.DidB. WouldC. ShouldD. Can55.____ I open the window ? It’s too hot here.A.WillB. DoC. ShallD. Would56.-- Shall tell John about it ?-- No, you ____. I told him just now.A.needn’tB.can’tC.wouldD.could57.-- Whose bike is this ?-- It ____ belong to Adam. Look ! His bag is on it.A.mustB.mayC.willD.can58.There will be a parents’ meeting this afternoon. But my parents can’t come because they _____ to Harbin.A.has goneB.have beenC.have goneD.has been59.--Don’t forget to ask him to write to me.-- I won’t. As soon as he _____, I’ll ask him t write to you.A.will comeB.cameesD.has come60.-- What are you busy doing, Sandy?-- I’m making some flash cards _____ me remember English words.A.helpB.to helpC.helpingD.helped61.-- Hi, Tom! Can you tell me when _____ for London?-- Yes, tomorrow afternoon.A.leavingB.leavesC. to leaveD.are you leaving62.Excuse me. Would you please tell me ____ buy a digital camera?A.what toB.where toC.what I canD.where can I63.Nobody wants to waste time watching boring plays, ______?A.does itB.do theyC.is heD.are they64.Two days _____ enough for me to finish the work, I need a third day.A.isn’tB.isC.aren’tD.are65.-- How many lessons do you usually have a day?-- Six lessons a day. And each of them ____ 45 minutes.ststsC.haveD.are66.Maths ______ my favourite subject.A.beB.isC.amD.are67.This pair of glassed _____ mine.A.areB.beC.isD.will be68.If Bob’s wife agrees to go on a holiday in winter, _____.A.so he willB.so won’t heC.so will heD.he won’t either69.All but one _____ here just now.A.isB.wasC.has beenD.were70.We often have to stay up for our study though we ____ to have enough sleep.A.toldB.have toldC.are toldD.were told71.-- ____ terrible weather it is !-- The radio says that it’ll get _____ late in the afternoon.A.What a ; badB.What ; worseC.How ; badD.How a ; worse72.He seems _____. He doesn’t see anything or look at anybody.A.sadlyB.happilyC.angryD.worry73.The doctor tells the old man ____ smoking. It’s bad for his health.A.give upB.to stopC.to beginD.to stop to74.The baby is too young to ____ itself.A.take careB.look likeC.look afterD.take after75.I can’t wear any pair of the shoes. They are ____ too big ___ too small.A.both; andB.neither ; norC.either ; orD.not only ; but also76.Don’t come into the lab ______you are asked to.A.unlessB.untilC.becauseD.since77.Kate’s dad is getting old. She will go back home to see him ____ it is convenient.A.becauseB.wheneverC.althoughD.unless78.-- The boy can speak both English and Japanese ____ he is only ten.-- Wow, what a clever boy!A.ifB.becauseC.though79.Peter speaks Chinese well indeed, but of course not ____ a local speaker in China.A.so fluently asB.more fluent thanC.as fluent asD.much fluently than80.-- Tell me _____.-- Well, it’s like...A.what is wrong with itB.what is itC.what the matter is with itD.what is it like81.Lily doesn’t know ___ she and her friends can do to help the little boy ____parents have left their hometown for making money.A.that;whoseB.how; whoC.what;whoD.what; whose82.Most of my classmates prefer loud music ___ they can dance to.A.thatB.whoC.whoseD. Where83.The young man asked ____ he could sing loudly.A.howB.thatC.weatherD.whether84.Does anybody know ___ we will have a sports meeting this weekend or not.A.ifB.whereC.whetherD. That85.It is known to all that ____ you exercise regularly, you won’t keep in good health.A.unlessB.ifC.whenD.that86.It is known to all that _____ you exercise regularly, you won’t keep in good health.A.unlessB. wheneverC.althoughD. if87.-- Mon, what did the doctor say?-- He advised me to live _____ the air is fresher.A.in whereB.in whichC.the place whereD.where88.They _____ friends since they met the first time in Shanghai.A.have madeB.have becomeC.have beenD.have turned89.He can’t have this football back ____ he promises not to kick it at the old man’s cat again.A.becauseB.sinceC.whenD.until90.-- I’ll do the washing -up. Jack, would you please do the floors?-- _______.A.Yes, pleaseB. Yes, my pleasureC.No, never mindD.Yes, I do91.-- Do you enjoy your present job?-- _____ . I just do it for a living .A.Of courseB. Not reallyC. Not likelyD. Not a little92.-- How is every thing going in the hospital, dear?-- ________.A.I’m all right, thanksB. Not too bad, I guess.C. That’s all right, thank youD. Not at all.93.-- He hasn’t watched the movie “So Young”, has he?-- _____. He told me it’s very moving and interesting and he’d like to watch it again.A.Yes, he hasB. Yes, he hasn’tC. No, he hasn’tD. No, he has94.-- Can you understand what I said?-- Sorry, I can ____ follow you. Would you please speak a little more slowly?A.alwaysB.almostC.hardlyD.hard95.-- Do you mind my taking this seat?-- _______.A.Yes, sit down, pleaseB. No , of course notC. Yes, take it pleaseD. No, you can’t take it96.-- I missed the wonderful basketball match on TV last night.-- _____.A.No problemB. What a pityC. Not at allD. That’s all right97.-- How about watching the evening show this weekend?-- ______ ! Let’s ask Jimmy to go with us.A.Best wishesB. Sounds greatC. Good luckD. That’s OK98.-- We were going to be successful, but something went wrong at the last minute.-- _____. But don’t give up. Try again.A.You didn’t mean thatB. I’m sorry to hear thatC. Find out the reasonD. Never mind99.-- Hello ! Could I borrow your CD Player tomorrow, please?-- Sorry ! Could you speak more loudly, please? ______.A.I’m afraid notB. Hold on for a moment, please.C. It’s a bad lineD. The line is busy100.-- Have you finished your composition yet? Supper is ready.-- ______. It’ll take about another ten minutes.A.of courseB. No, not yetC. I’m comingD. Wait a minute 101.-- ______?-- A bike hit a car and the man on it fell on the ground.A.Is anyone hurt?B. What happened?C. What’s wrong with you?D. What’s your trouble?102 -- Dad, where is my key?-- ______ ! Mom is very angry for waiting so long.e onB. Take your timeC. Never mindD. Slow down103.-- I’m really glad to have you all here, _______.-- Thank you for your nice food, Mrs Hunt.A.Take it easyB. Please don’t worryC. Please help yourselvesD. Please enjoy yourself104.-- The jeans look so special. May I try then on?-- _____. Here is a room for you.A.That’s rightB. No, you can’tC. This way, pleaseD. I’m sure you can 105.-- Yiling Square is so beautiful. So please don’t step on the grass next time, Lily.-- ______.A.Is that so ?B. Sorry, I don’t know.C. Sorry, I won’tD. It doesn’t matter. 106.-- Thank you for your coffee and tasty snacks. I’m afraid I have to go now.-- OK. ______.A.Go slowlyB. All rightC. Sounds greatD. See you107.-- Will there be wars in the world in the future?-- ______.A.I hope notB. I’m worried about thatC. That’s a good ideaD. Of course not108.Taiwan and the mainland have a lot in common. They ____ the same history and culture.A.shareB.dareC.pretendD.explain109.It is reported that the sand storm is moving ____ the south year after year.A.throughB.towardsC.besideD.below110.I ____ you every success in the future.A.hopeB.wishC.expectD.want111.In winter, people usually keep flowers in their houses to ____ them against the cold.A.produceB.provideC.protectD.prevent112.--Is Mrs. Smith in?-- I’m afraid she isn’t . Would you like to ____ a message?A.takeB.sendC.keepD.leave113.-- Yao Ming is getting a lot better than expected.-- But his doctor ____ he shouldn’t be in a hurry to return to training.A.expectsB.hopesC.wondersD.warns114.-- Is that the right way up?-- Yeah. I _____ so.A.hopeB.supposeC.expectD.wish115.-- How are the overseas Chinese in Libya?-- They have been _____ back by the government.eB.takenC.flownD.brought116.With the help of satellites, news can ____ every corner of the world.A.getB.reachC.appearD.arrive117.I think I will ___ fishing as a hobby after I retire in a few years.A.take upB.take offC.take outD.take away118.As soon as he ____ the bus, the poor man realized he had left his wallet on it.A.got onB.got inC.got toD.got off119.Don’t always depend on your parents. The underlined part means “____”.A.rely onB.turn onC.go on D put on120.-- Look. Sam is running in 100-metre race?-- It’s hard to _____ that both his leg were once broken.A.imagineB.realizeC.knowD.find121.-- The girl ____ all her savings to the people in the Southwest for the serious drought.-- What a donation and what a nice girl!A.handed outB.put outC.sold outD.gave out122.-- The food here is very nice, I’m rather hungry.-- Then let’s go in and ____ right now.A.pay the billB.order somethingC.have a picnicD.have a drink123.Tom goes in for basketball. He always plays basketball with is friends in hsi spare time. The under lined part means “______”.A.takes part inB.is interested inC.gets tired ofD.is busy with124.-- Pete, the light in your room ___ the whole night. What were you doing?-- Oh, I was busy writing a report.A.turns onB.turned onC.is onD.was on125.His new book has just _____. Let’s go and buy one.e overe downe one out126.Can go and find out when the plane to New York _____?A.puts offB.gets offC.takes offD.breaks off127.-- Why did you come back so early today?-- The English party was ____ till next Friday.A.put upB.put offC.put outD.put down128.We have never visited the museum, but we have _____ it.A.stood forB.belonged toC.heard aboutD.kept to129.-- Is ____ here?-- No, Tom and Jack have asked for leave.A.anybodyB.somebodyC.everybodyD.nobody130.-- How often do you go back to your hometown?-- Once ____ two years.A.everyB.eachC. inD.for131.-- Sam, do you take ___ in the long history of your country?-- Maybe not. It can be a white elephant at the same time.A.prideB.interestC.notesD.place132.Mary wasn’t in then, so I had to leave her a _____.A.messagermationC.adviceD.paper133.At Chinese New Year, some people visit their relatives, _____ stay with their families.A.anotherB.othersC.the otherD.the others134.-- Mary, here’s a dictionary. I hope it will help you..-- Thanks a lot. It’s ____ what I need.A.justB.nearlyC.evenD.almost135.something smells _____. You’d better clean your house often.A.goodB.wellC.terribleD. Badly136.One of the wonders of the ____ world is the pyramids in Egypt.A.oldB.naturalC.modernD.ancient137.The fish has gone ______. Throw it away!A.niceB.nicelyC.badD.badly138.If you want to know the word ____ , you’d better cook it up in the dictionary.A.hardlyB.carefullyC.mostlyD.exactly139.The cartoon looks very ____. It is warmly welcomed by children.A.nicelyB.widelyC.beautifullyD.lovely140.-- Peter is ill in hospital.-- I’m not ____ to hear that. I’ve been telling him not to work so late every day!A.surprisedB.sorryC.gladD.excited141.____ free education, the poor children in our hometown can go back to school.A.Thanks toB. Instead ofC. As forD. Because142.-- Don’t talk loudly, everyone ___ keep quiet in the library.-- Sorry, I won’t.A.is used toB.is able toC.is made toD.need have told二填空题1.Mr. Black said that he _________ (come ) back in five minutes.2.On the weekend, I’ll __________________(能更随意地着装)3.China is a developing country ________________.(有着悠久的历史)4.I think most people are __________________(赞同).5.I know we ___________________________(有时是很吵闹的)6._________________________(肯定有人) visiting the homes in our neighborhood.(must)7.____________________ (你介意) keeping your voice down?(mind)8._________________________(一定别错过) the New Ocean Waves if they come to a city near you. (not)9.Students are skating ___________________ (为慈善机构筹钱)10.He has 16 bikes __________ (要修理) and give away to children who don’t have bikes.11.The music makes me ________________.(回忆起我的家乡)12._________________ (我最喜欢的功课) are physics and chemistry.13.My biggest challenge is ________________ (学会如何表现) at the dinner table.14.安邀请朋友们参加革命她的生日快乐聚会。
我整理的行政能力职能测试错题本1(带解析)
我整理的行政能力职能测试错题本1(带解析)1.【例题】关于财务混乱的错误谣言损害了一家银行的声誉。
如果管理人员不试图反驳这些谣言,它们就会传播开来并最终摧毁顾客的信心。
但如果管理人员努力驳斥这种谣言,这种驳斥使怀疑增加的程度比使它减少的程度更大。
如果以上的陈述都是正确的,根据这些陈述,下列哪一项一定是正确的?a.银行的声誉不会受到猛烈的广告宣传活动的影响b.管理人员无法制止已经发生的威胁银行声誉的谣言c.面对错误的谣言,银行经理的最佳对策是直接说出财务的真实情况d.关于财务纷乱的恰当的传言,对银行储户对该银行的信心的影响没错误的流言小2.【例题】通常计算机的逻辑器件成本正以每年25%的比例上升,通常的计算机存贮器件则以每年40%的比例上涨。
如果成本上涨的比例在三年内维持不变,在三年后通常的计算机存贮器件的成本上升的数量必须比通常逻辑器件成本上升的数量更大。
关于以下哪一项的精确信息在评价以上结论的正确性方面最有价值?a.今后三年内计划被出售的逻辑器件和存贮器件的数量b.通常的逻辑器件和存贮器件实际缴纳的价格c.相同厂家的逻辑器件和存贮器件的兼容性d.逻辑器件和存贮器件的相对耐用性6.作为一个拥有五千年不间断文明史的古国,我国拥有十分丰富的非物质文化遗产。
这些活态的文化不仅构成了中华民族深厚的文化底蕴,也承载着中华民族文化渊源的基因。
但随着我国现代化建设的加速,文化标准化以及环境条件的变化,尚有不计其数的文化遗产正处于濒危状态,它们犹如一个个影子,随时都可能消亡。
对这段文字归纳最精确的就是:()a.文化遗产维护工作必须存有新思路b.必须注重现代化建设增添的新问题c.新形势下亟须强化文化遗产维护d.诸多因素威胁着文化遗产的存活状态【解析】d。
选项a主体不对,材料没有谈到“新思路”;选项b太宽泛笼统;选项c 是根据材料得出的推论,不是对材料本身的概括。
7.能源价格低并非全系列就是坏事,因为价格杠杆自可以调节石油的流向,保证人类以剩的石油找出更好的新能源,而不是全系列使用几十年前显然不存有的并使夏天变小炎热的能源需求上。
苏教版初一数学第二学期期中复习错题集(1)
2020-2021学年度第二学期初一数学期中复习错题集(1)一.选择题(共11小题)1.如果等式(2x﹣3)x+3=1,则等式成立的x的值的个数为()A.1B.2C.3D.42.如图,在五边形ABCDE中,∠A+∠B+∠E=α,DP、CP分别平分∠EDC、∠BCD,则∠P的度数是()A.α﹣90°B.90°C.D.540°3.如图,在△ABC中,AD、BE分别是BC、AC边上的高,AF、BG分别是△ABC中∠BAC,∠ABC的角平分线,∠C=50°,给出如下四个结论:①∠3=50°,②∠4=115°,③∠1=∠2,④,其中正确的结论是()A.①②③④B.②③④C.①③④D.①②④4.如图,△ABC的三边长均为整数,且周长为22,AM是边BC上的中线,△ABM的周长比△ACM的周长大2,则BC长的可能值有()个.A.4B.5C.6D.75.下列是一名同学做的6道练习题:①(﹣3)0=1;②a3+a3=a6;③(﹣a5)÷(﹣a3)=﹣a2;④4m﹣2=;⑤(xy2)3=x3y6;⑥22+23=25,其中做对的题有()A.1道B.2道C.3道D.4道6.如图,∠ABC=∠ACB,AD,BD,CD分别平分△ABC的外角∠EAC、内角∠ABC、外角∠ACF.以下结论:①AD∥BC;②∠ACB=2∠ADB;③DB平分∠ADC;④∠ADC=90°﹣∠ABD;⑤∠BDC=∠BAC.其中正确的结论有()A.1个B.2个C.3个D.4个7.设a,b是实数,定义@的一种运算如下:a@b=(a+b)2﹣(a﹣b)2,则下列结论:①若a@b=0,则a=0或b=0②a@(b+c)=a@b+a@c③不存在实数a,b,满足a@b=a2+5b2④设a,b是矩形的长和宽,若矩形的周长固定,则当a=b时,a@b最大.其中正确的是()A.②③④B.①③④C.①②④D.①②③8.如图(1)所示为长方形纸带,将纸带沿EF折叠成图;(2)再沿BF折叠成图;(3)继续沿EF折叠成图(4)按此操作,最后一次折叠后恰好完全盖住∠EFG,整个过程共折叠了9次,问图(1)中∠DEF的度数是()A.20°B.19°C.18°D.15°9.如图,有一张边长为b的正方形纸板,在它的四角各剪去边长为a的正方形.然后将四周突出的部分折起,制成一个无盖的长方体纸盒.用M表示其底面积与侧面积的差,则M可因式分解为()A.(b﹣6a)(b﹣2a)B.(b﹣3a)(b﹣2a)C.(b﹣5a)(b﹣a)D.(b﹣2a)210.如果一个正整数可以表示为两个连续奇数的平方差,那么称该正整数为“和谐数”如(8=32﹣12,16=52﹣32,即8,16均为“和谐数”),在不超过2017的正整数中,所有的“和谐数”之和为()A.255054B.255064C.250554D.25502411.如图,将四边形纸片ABCD沿MN折叠,若∠1+∠2=130°,则∠B+∠C=()A.115°B.130°C.135°D.150°二.填空题(共12小题)12.如图△ABC中,将边BC沿虚线翻折,若∠1+∠2=102°,则∠A的度数是.13.若m、n为整数,且(x+m)(x+n)=x2+ax+12,则a的取值有种情况.14.使等式(2x+3)x+2020=1成立的x的值为.15.如图,已知AB∥CD,E是直线AB上方一点,G为直线AB下方一点,F为直线CD上一点,∠EAF=148°,∠BAF=3∠BAG,∠DCE=3∠DCG,则∠E和∠G的数量关系为.16.如果三角形的两个内角α与β满足3α+β=90°,那么我们称这样的三角形为“准直角三角形”.如图,B、C为直线l上两点,点A在直线l外,且∠ABC=45°.若P是l上一点,且△ABP是“准直角三角形”,则∠APB的所有可能的度数为.17.如图是某公园里一处矩形风景欣赏区ABCD,长AB=50米,宽BC=30米,为方便游人观赏,公园特意修建了如图所示的小路(图中非阴影部分),小路的宽均为1米,那么小明沿着小路的中间出口A到出口B所走的路线(图中虚线)长为米.18.如图,在△ABC中,∠C=90°,BC=8cm,AC=6cm,点E是BC的中点,动点P从A点出发,先以1cm/s的速度沿A→C运动,然后以2cm/s的速度沿C→B运动.若设点P运动的时间是t秒,那么当t=时,△APE的面积等于6cm2.19.如果多项式6x2﹣kx﹣2因式分解后有一个因式为3x﹣2,则k=.20.如图,已知在△ABC中,AD⊥BC,垂足为D,AB=13,AC=15,BD=5,CD=9,AD=12.点P从点B出发沿线段BA﹣AC的方向,以1个单位/秒的速度运动到点C停止,当t=秒时,△ADP与△BDP的面积相等.21.如图,在△ABC中,AD是中线,点E在AB上,且BE=2AE,连接CE交AD于点O.连接BO,若△ABC的面积为1,则四边形BDOE的面积为.22.在△ABC中,AD是高,∠BAD=60°,∠CAD=20°,AE平分∠BAC,则∠EAD的度数为.23.如图,AD,CE是△ABC的两条高,它们相交于点P,已知∠BAC的度数为α,∠BCA 的度数为β,则∠APC的度数是.三.解答题(共14小题)24.如图1,已知线段AB、CD相交于点O,连接AC、BD,则我们把形如这样的图形称为“8字型”.(1)求证:∠A+∠C=∠B+∠D;(2)如图2,若∠CAB和∠BDC的平分线AP和DP相交于点P,且与CD、AB分别相交于点M、N.①以线段AC为边的“8字型”有个,以点O为交点的“8字型”有个;②若∠B=100°,∠C=120°,求∠P的度数;③若角平分线中角的关系改为“∠CAP=∠CAB,∠CDP=∠CDB”,试探究∠P与∠B、∠C之间存在的数量关系,并证明理由.25.如图,A,B两点同时从原点O出发,点A以每秒a个单位长度沿x轴的负方向运动,点B以每秒b个单位长度沿y轴的正方向运动.(1)如图1,若|a+2b﹣5|+(2a﹣b)2=0,试分别求出1秒钟后,A,B两点的坐标;(2)如图2,延长BA至E,在∠ABO的内部作射线BF交x轴于点C,若∠EAC,∠FCA,∠ABC的平分线交于点G,过点G作BE的垂线,垂足为H,试问∠AGH,∠BGC的大小关系如何?请写出你的结论并证明;(3)如图3,过A,O两点的直线相交于点N,AB的延长线交ON于点M,若∠MAN=∠NOB,∠BAO﹣∠N=m°,试求∠AMO的度数.26.已知如图,∠COD=90°,直线AB与OC交于点B,与OD交于点A,射线OE与射线AF交于点G.(1)若OE平分∠BOA,AF平分∠BAD,∠OBA=36°,则∠OGA=°.(2)若∠GOA=∠BOA,∠GAD=∠BAD,∠OBA=36°,则∠OGA=°.(3)将(2)中的“∠OBA=36°”改为“∠OBA=α”,其它条件不变,求∠OGA的度数.(用含α的代数式表示)(4)若OE将∠BOA分成1:4两部分,∠GAD═∠BAD,∠ABO=α(18°<α<90°),求∠OGA的度数.(用含α的代数式表示)27.如果a c=b,那么我们规定(a,b)=c,例如:因为23=8,所以(2,8)=3(1)根据上述规定,填空:(3,27)=,(4,1)=(2,0.25)=;(2)记(3,5)=a,(3,6)=b,(3,30)=c.求证:a+b=c.28.已知AM∥CN,点B为平面内一点,AB⊥BC于B.(1)如图1,直接写出∠A和∠C之间的数量关系;(2)如图2,过点B作BD⊥AM于点D,求证:∠ABD=∠C;(3)如图3,在(2)问的条件下,点E、F在DM上,连接BE、BF、CF,BF平分∠DBC,BE平分∠ABD,若∠FCB+∠NCF=180°,∠BFC=3∠DBE,求∠EBC的度数.29.在△ABC中,∠C=90°,BD是△ABC的角平分线,P是射线AC上任意一点(不与A、D、C三点重合),过点P作PQ⊥AB,垂足为Q,交直线BD于E.(1)如图,当点P在线段AC上时,说明∠PDE=∠PED.(2)作∠CPQ的角平分线交直线AB于点F,则PF与BD有怎样的位置关系?画出图形并说明理由.30.我国古代数学的许多发现都曾位居世界前列,其中“杨辉三角”就是一例.杨辉法则:如图,两侧的数都是1,其余每个数均为其上方左右两数之和,它给出了(a+b)n(n为正整数)的展开式(按a的次数由大到小的顺序排列)的系数规律.例如,第三行的三个数1、2、1,恰好对应(a+b)2=a2+2ab+b2展开式中的系数;第四行的四个数1、3、3、1,恰好对应(a+b)3=a3+3a2b+3ab2+b3展开式中的系数.(1)根据上面的规律,写出(a+b)5的展开式;(2)利用上面的规律计算:(﹣3)5+5×(﹣3)4+10×(﹣3)3+10×(﹣3)2+5×(﹣3)+1.31.先阅读下面的内容,再解决问题:问题:对于形如x2+2xa+a2,这样的二次三项式,可以用公式法将它分解成(x+a)2的形式.但对于二次三项式x2+2xa﹣3a2,就不能直接运用公式了.此时,我们可以在二次三项式x2+2xa﹣3a2中先加上一项a2,使它与x2+2xa的和成为一个完全平方式,再减去a2,整个式子的值不变,于是有:x2+2xa﹣3a2=(x2+2xa+a2)﹣a2﹣3a2=(x+a)2﹣4a2=(x+a)2﹣4a2=(x+a)2﹣(2a)2=(x+3a)(x﹣a)像这样,先添一适当项,使式中出现完全平方式,再减去这个项,使整个式子的值不变的方法称为“配方法”.利用“配方法”,解决下列问题:(1)分解因式:a2﹣8a+15;(2)若a2+b2﹣14a﹣8b+65+|m﹣n|=0①当a,b,m满足条件:2a×4b=8m时,求m的值;②若△ABC的三边长是a,b,c,且c边的长为奇数,求△ABC的周长.32.如图,已知AM∥BN,点P是射线AM上一动点(与点A不重合),BC、BD分别平分∠ABP和∠PBN,分别交射线AM于点C,D,且∠CBD=60°.(1)求∠A的度数;(2)当点P运动时,∠APB与∠ADB之间的数量关系是否随之发生变化?若不变化,请写出它们之间的关系,并说明理由;若变化,请写出变化规律.(3)当点P运动到使∠ACB=∠ABD时,求∠ABC的度数.33.【生活常识】射到平面镜上的光线(入射光线)和变向后的光线(反射光线)与平面镜所夹的角相等.如图1,MN是平面镜,若入射光线AO与水平镜面夹角为∠1,反射光线OB与水平镜面夹角为∠2,则∠1=∠2.【现象解释】如图2,有两块平面镜OM,ON,且OM⊥ON,入射光线AB经过两次反射,得到反射光线CD.已知:∠1=55°,求∠4的度数.【尝试探究】如图3,有两块平面镜OM,ON,入射光线AB经过两次反射,得到反射光线CD,光线AB与CD相交于点E,若∠MON=46°,求∠CEB的度数.【深入思考】如图4,有两块平面镜OM,ON,且∠MON=α,入射光线AB经过两次反射,得到反射光线CD,光线AB与CD所在的直线相交于点E,∠BED=β,α与β之间满足的等量关系是.(直接写出结果)34.如图,平面内,四条线段AB、BC、CD、DA首尾顺次相接,∠ABC=20°,∠ADC=40°.(1)如图1,∠BAD和∠BCD的角平分线交于点M,求∠AMC的大小;(2)如图2,点E在BA的延长线上,∠DAE的平分线和∠BCD的平分线交于点N,求∠ANC度数;(3)如图3,点E在BA的延长线上,点F在BC的延长线上,∠DAE的平分线和∠DCF 的平分线交于点P,请直接写出∠APC的度数.35.如图,已知l1∥l2,MN分别和直线l1、l2交于点A、B,ME分别和直线l1、l2交于点C、D,点P在MN上(P点与A、B、M三点不重合).(1)如果点P在A、B两点之间运动时,∠α、∠β、∠γ之间有何数量关系请说明理由;(2)如果点P在A、B两点外侧运动时,∠α、∠β、∠γ有何数量关系(只须写出结论).36.如图1,AB∥CD,点E,F分别在直线CD,AB上,∠BEC=2∠BEF,过点A作AG ⊥BE的延长线交于点G,交CD于点N,AK平分∠BAG,交EF于点H,交BE于点M.(1)直接写出∠AHE,∠F AH,∠KEH之间的关系:=+;(2)若∠BEF=∠BAK,求∠AHE;(3)如图2,在(2)的条件下,将△KHE绕着点E以每秒5°的速度逆时针旋转,旋转时间为t,当KE边与射线ED重合时停止,则在旋转过程中,当△KHE的其中一边与△ENG的某一边平行时,直接写出此时t的值.37.在△ABC中,∠BAC=90°,点D是BC上一点,将△ABD沿AD翻折后得到△AED,边AE交射线BC于点F.(友情提醒:翻折前后的两个三角形的对应边相等,对应角相等.)(1)如图①,当AE⊥BC时,求证:DE∥AC;(2)若∠C﹣∠B=10°,∠BAD=x°.①如图②,当DE⊥BC时,求x的值;②是否存在这样的x的值,使得△DEF中有两个角相等.若存在,并求x的值;若不存在,请说明理由.。
六年级英语错题整理(一)
六年级错题整理(一)一.根据中文提示完成句子1.They are the _________ (国王们的) new clothes.2.The _________ (孩子)_________ (穿着) a red dress is my sister.二.单项选择1.My uncle _________ a driver ten years ago.A.isB. wasC. were2.Shall we make any new clothes _________ the doll?A. withB. ofC. for3. Yang Ling is telling her mother _________ her new school.A. forB. toC. about4. The gloves are nice. Please _________.A. try it onB. try on themC. try them on5. We go to school _________ half past seven _________ Monday morning.A. in; atB. at; onC. at; in6. They went to the shop and _________ some flowers for Miss Li yesterday.A. buyB. buysC. bought7. _________ it often windy in spring?A. IsB. DoesC. Do8. I _________ some bread and milk _________ my breakfast this morning.A. have; withB. have; forC. had; for9. Where did you go _________ the holiday? I went _________ fishing.A. to; toB. for; /C. for; to10. Where _________ Mike and his father _________ this morning?A. does; goB. did; wentC. did; go11. ---_________did you _________ last weekend? ---I visited my grandparents.A. Where; goB. Where; doC. What; do12. My grandpa went _________, but my grandma _________.A. fishing; doesn’tB. fishing; couldn’tC. climbing; didn’t13. _________ your mother see a film yesterday evening?A. AreB. DidC. Was14. Liu Tao_________ ill yesterday, so he _________ to school.A. was; wentB. wasn’t; didn’tC. was; didn’t go15. Mike was late for class again, so Mr Brown _________ angry.A. getsB. gotC. were16. ---Can you make a sentence _________ “like”?---Sure! “My parents like cooking.”A. inB. withC. use17. I have a cute dog, but my friend Lily _________.A. don’tB. doesn’tC. isn’t18. My sister teaches English in _________ primary school. _________ school is very beautiful.A. a; TheB. the; AC. a; A19. He was here _________ seven _________ the morning of last Sunday.A. at; onB. at; inC. in; ofD. on; at20. _________ did you fly kites this morning? In the park.A. WhatB. WhereC. WhichD. When21. _________ it often _________ in winter here?A. Does; rainB. Do; rainC. Is; rainD. Is; raining22. Mike was late because he _________ his way.A. losesB. loseC. lostD. is losing23. They had _________ the story again.A. startB. startedC. startingD. to start24. The rice is dry and _________. We can’t eat it.A. niceB. cuteC. shortD. hard25. Each _________ a sentence.A. boy sayB. boys sayC. boy saysD. boys says26. She likes_________ newspapers, she often _________ them in the evening.A. reading; readsB. reads; readsC. reading; reads27. Everything _________.A. go wellB. go goodC. goes well28. It was _________. I couldn’t go to the park.A. rainedB. rainyC. rain29. ---Where did you _________ this morning? --- I _________ to the supermarket.A. go; goB. went; goC. go; went30. ---You shouldn’t _________ your car here. ---OK, I’m sorry.A. parkB. parkingC. parks31. In the US, people call the metro _________.A. metroB. undergroundC. subway32. Mike _________ eggs _________ breakfast.A. brings; toB. brought; toC. brought; for33. ---_________you see the sign over there? Yes, it means we shouldn’t litter.A. AreB. DoesC. Can34. ----_________ you spell the word “mobile” then? ---No. But now I _________.A. Do; couldB. Could; canC. Could; can’t35. ---What _________ you _________ five years ago? --- I couldn’t ride.A. could; doB. did; doC. couldn’t; do36. ---_________ your teacher _________ newspapers? ---Yes, she does.A. Is; readB. Does; readsC. Does; read37. We had only one music room, and there _________ any libraries at all.A. isn’tB. wasn’tC. weren’t三. 用所给词的适当形式填空1. He likes _________(ride) a bike in the park.2. Look! Su hai _________(wear) a new skirt. It’s nice.3. There _________(not be) some shops here two years ago.4. This is the _________(lion) house.5. On _________ (twenty) of September, we_________ (take) some photos in the park.6. It is_________ here in Spring. But now there’s no_________. (rain)7. Don’t shout, one of them _________ (listen) to the radio in the room.8. _________ you _________ (do) your homework yesterday?9. It _________(rain), and we _________(be) all wet last night.10. -What did Sam _________ (wear)? -He _________ (wear) lots of bottles.11. It often _________ (rain) here in spring, but it _________ (not rain) last week.12. Yang Ling _________ (wait) for the bus now.13. Lily and Mary usually _________ (have) a picnic at weekends.14. ---Where’s your father? ---He _________ (water) his flowers.15. Having fashion shows _________ (be) interesting and we all like the nice clothes.16. I’d like _________ online. Do you like _________ (shop) online?17. ---Look, who _________ _________ (dance) in the room?---She’s Nancy. She _________ (dance) there every day.18. There were a lot of _________ (cloud)in the sky.19. The little girl _________ (find) a lion in front of her. She was very afraid.20. My father likes _________ photos. He _________ many photos in the park yesterday. (take)21. My father _________ (drink) a lot of wine yesterday evening.22. ---What _________ (do) Liu Tao _________ at weekends? ---He usually _________ (do) his homework.23. Yesterday I wanted _________ (go) to the Summer Palace.24. I’d like _________ (do) shopping on the Internet.25. One day, I _________ (watch) a film about Harry Potter.26. She _________(live) in the city and there is a tree in front of her house.27. Listen! The students _________ (be) singing in the music room.28. Last Friday, Miss Fox _________ (tell) her students this story.29. My father used a telephone_________ (call) his friends before.30. Yang Ling _________ (wait) for the bus now.31. The signs over there _________ (mean) different things.32. He should _________ (do) his homework every day.33. I _________(watch) a fashion show in the square now.34. Mary would like _________(make) friends with students from all over the world.35. ---Whose _________(TV) are these? ---They are _________(Mary)36. The Chinese students work _________ (hard) at all their subjects.四. 按要求完成句子1. I am a bus driver now. (用ten years ago改写句子)I _________ a bus driver ten years ago.2. Tom showed us his new toy cars. (同义句转换)Tom _________ his new toy cars _________ _________.3. Jack can make a toy car. (对划线部分提问)_________ can _________ a toy car?4. I was hungry this morning. (改为一般疑问句并作肯定回答)_________ _________ hungry this morning?_________. I _________.5. Liu Tao did his homework an hour ago. (改为否定句)Liu Tao _________ _________ his homework an hour ago.6. We are talking about that fashion show now. (用yesterday 改写句子)We _________ _________ the fashion show yesterday.7. We flew kites high in the sky. (改为否定句)We _________ _________ kites high in the sky.8. I was in the playground just now.(改为一般疑问句)_________ _________in the playground just now?9. The holiday was great fun. (对划线部分提问)_________ was the holiday?10. He could draw the hill. (对划线部分提问)What _________ he _________?11. Sam and Bobby are talking about the weather. (对划线部分提问)_________ _________ Sam and Bobby _________ _________? 12. He is eating a cake now. (用last Sunday改写句子)He _________ a cake last Sunday.13. Helen went to the farm for the holiday. (对划线部分提问)_________ _________ Helen _________ for the holiday?14. They had an English lesson. (用now改写句子)They _________ _________ an English lesson _________.15. Did Mike come back home late last Sunday? (改为陈述句)Mike _________ _________ home late last Sunday.16. There was only one child in the classroom. (对划线部分提问)How _________ _________ _________ there I the classroom. 17. The children are playing games in the park. (改为一般过去时)The children _________ _________ in the park yesterday.18. It’s raining now. (用often替换now改写句子)It often _________.19. Mike has six lessons every day. (改为否定句)Mike _________ _________ six lessons every day.20. We bought some things from the supermarket. (对划线部分提问)What _________ _________ _________ from the supermarket? 21. Go and sit there. (改为否定句)_________ go _________ sit there.22. Sam brought some pies for her bag. (对划线部分提问)_________ _________ Sam _________ for lunch?23. I wore lots if bottles last Sunday._________ you _________ lots of bottles last Sunday?24. Please make a sentence with “egg”. (同义句转换)Please _________ “egg” _________ make a sentence.。
中考数学知识点复习 相似错题整理(1)-精品
如图,王华同学在晚上由路灯AC走向路灯BD,当他走到点P时,发现身后他影子的顶部刚好接触到路灯AC的底部,当他向前再步行12m到达Q点时,发现身前他影子的顶部刚好接触到路灯BD的底部.已知王华同学的身高是1.6m,两个路灯的高度都是9.6m.(1)求两个路灯之间的距离;(2)当王华同学走到路灯BD处时,他在路灯AC下的影子长是多少?如图,直立在点B处的标杆AB长2.5m,站立在点F处的观察者从点E处看到标杆顶A、旗杆顶C在一条直线上.已知BD=8.8m,FB=2.2m,EF=1.5m,求旗杆高CD.(用两种方法)教学楼旁边有一棵树,学习了相似三角形后,数学小组的同学想利用树影来测量树高.课外活动时在阳光下他们测得一根长为1m的竹竿的影长是0.9m,但当他们马上测量树高时,发现树的影子不全落在地面上,有一部分影子落在教学楼的墙壁上,经过一番争论,小组的同学认为继续测量也可以测出树高,他们测得落在地面的影长2.7m,落在墙壁上的影长1.2m,请你和他们一起算一下,树高为多少?答案4.2m如图,在△ABC中,∠C=90°,BC=8cm,5AC-3AB=0,点P从B出发,沿BC方向以2cm/s的速度移动,与此同时点Q从C出发,沿CA方向以1cm/s的速度移动,经过多长时间△ABC和△PQC相似?如图,在△ABC中,AB=5,BC=3,AC=4,动点E(与点A,C不重合)在AC边上,EF∥AB交BC于F点.(1)当△ECF的面积与四边形EABF的面积相等时,求CE的长;(2)当△ECF的周长与四边形EABF的周长相等时,求CE的长;(3)试问在AB上是否存在点P,使得△EFP为等腰直角三角形?若不存在,请简要说明理由;若存在,请求出EF的长.某公司在布置联欢会会场时,需要将直角三角形彩纸裁成长度不等的矩形纸条.如图所示:在Rt△ABC中,AC=30cm,BC=40cm.依此裁下宽度为1cm的纸条,若使裁得的纸条的长都不小于5cm,则能裁得的纸条的张数为__________答案:26如图,AB、AC分别是⊙O的直径和弦,点D为劣弧AC上一点,弦ED分别交⊙O于点E,交AB于点H,交AC于点F,过点C的切线交ED的延长线于点P.(1)若PC=PF,求证:AB⊥ED;(2)点D在劣弧AC的什么位置时,才能使AD2=DE•DF,为什么?如图,电线杆上有一盏路灯O,电线杆与三个等高的标杆整齐划一地排列在马路的一侧,AB、CD、EF是三个标杆,相邻的两个标杆之间的距离都是2 m,已知AB、CD在灯光下的影长分别为BM=1.6 m,DN=0.6m.(1)请画出路灯O的位置和标杆EF在路灯灯光下的影子;(2)求标杆EF的影长.如图,在一个3×5的正方形网格中,△ABC的顶点A,B,C在单位正方形顶点上,请你在图中画一个△A1B1C1,使得△A1B1C1∽△ABC,且点A1,B1,C1都在单位正方形的顶点上.如图,在平面直角坐标系中,已知OA=12厘米,OB=6厘米.点P从点O开始沿OA边向点A 以1厘米/秒的速度移动;点Q从点B开始沿BO边向点O以1厘米/秒的速度移动.如果P、Q同时出发,用t(秒)表示移动的时间(0≤t≤6),那么(1)设△POQ的面积为y,求y关于t的函数解析式;(2)当△POQ的面积最大时,将△POQ沿直线PQ翻折后得到△PCQ,试判断点C是否落在直线AB上,并说明理由;(3)当t为何值时,△POQ与△AOB相似.如图1所示,在△ABC中,AB=AC=2,∠A=90°,O为BC的中点,动点E在BA边上自由移动,动点F在AC边上自由移动.(1)点E,F的移动过程中,△OEF是否能成为∠EOF=45°的等腰三角形?若能,请指出△OEF为等腰三角形时动点E,F的位置;若不能,请说明理由;(2)当∠EOF=45°时,设BE=x,CF=y,求y与x之间的函数解析式,写出x的取值范围;(3)在满足(2)中的条件时,若以O为圆心的圆与AB相切(如图2),试探究直线EF与⊙O的位置关系,并证明你的结论.。
安全生产考试错题-(1)
2. 气瓶充装站只要具备相当规模,未办理注册登记的,也可以从事充装工作。
( × )5. 对于正常人体而言,感知阈值平均为0.5毫安,并与时间因素相关。
( × )6. 成年男性平均感知电流比女性大,因此男性比女性对电流更敏感。
( × ) 8. 工频交流电流的频率越高,对人体的伤害作用越大。
( × )9. 危险化学品的包装必须符合国家法律、法规、规章的规定和国家标准或企业标准的要求。
( × )12. 用于生产、储存、装卸危险物品的建设项目没有安全设施设计或者安全设施设计末按照规定报经有关部门审查同意,可以先投入施工建设。
( × )14. 可以生产、销售或者使用不合格的消防产品以及国家明令淘汰的消防产品。
( × ) 17. 可以预警的自然灾害、事故灾难和公共卫生事故预警级别,分为一级、二级、三级、四级,四级为最高级别。
( × )18. 应急预案应当包括应急组织机构和人员的联系方式、应急物资储备清单等附件信息。
附件信息应当经常更新,确保信息准确有效。
( × )21. 应急救援过程中,应急救援人员应在事故地区的主要交通要道、路口设安全检查站,控制抢险救援的车辆通行。
( × )30. 易燃液体、遇湿易燃物品、易燃固体与氧化剂可混合储存,但具有还原性的氧化剂应单独存放。
( × )32. 当某种化学品具有两种及两种以上的危险性时,用危险性最小的警示词。
( × )34. 为了防止职工在生产过程中受到职业伤害和职业危害,按工作特点配备的劳动防护用品、用具可适当的向职工收取一定的费用。
( × )36. 如果用人单位没有统一购买劳动防护用品,应该按照法律、法规或标准的规定,发给从业人员资金由其自行购买。
( × )38. 事故发生后,不管情况如何,事故现场有关人员不得直接向事故发生地县级以上人民政府安全生产监督管理部门和负有安全生产监督管理职责的有关部门报告。
八年级上册Unit1错题整理
八年级上册Unit1 错题整理一、词汇运用1.Do you often share your ________(欢乐) with your friends?2.Everyone in my class likes Mrs Wu’s sweet ________.(嗓音)3.My legs always ________(fit) well under my desk as I was small.4.I feel even ________(ill) than yesterday. I have to go to hospital.5.Which city is ________(far) to the sea, Beijing or Tianjin?6.If you can take ________(much) exercise, you will be ________(health) than before.7.Do you think this story is ________(fun) than that one?8.I think hiking is ________(excite) than jogging.lie is ________(thin) of the six girls. She needs to exercise more to become strong.10.Lily is ________(hard-working) of the twins.11.Are you ________(will) to visit the home for the elderly with us this Sunday?12.My friend Nick is as ________(care) as his brother. Both of them do well in everything.13.Who do you think is the best ________ (swim) around the world now?14.He’s not happy these days because he has some ________(困难) with his classmates.二、动词填空1. ________ you please ________(share) the toy with the new boy, Daniel?三、单项选择( )1.—Can I borrow ________ books, sir?--Sorry, two at most at a time.A. two moreB. more twoC. two anotherD. other two( )2.What makes you so ________ today, Jenny?A.happyB. happinessC. happilyD. happier( )3.Would you like to tell us ________ your best friend, John?A. withB. aboutC. toD. in( )4.Whose hair is ________, Betty’s or ________?A. longer; herB. longer; hersC. longest; herD. the longest; hers( )5.Maths is one of Peter’s ________ subjects. He doesn’t like it at all.A. worseB. the worstC. worstD. the worst( )6.Which city do you think is ________ from Wuxi, Beijing or Dalian?A. farthestB. farC. fartherD. the farthest( )7. ________ of the two men over there is my brother.A. OlderB. The olderC. ElderD. The elder( )8.Nobody knew ________ at that time.A. how to doB. what to doC. what to do itD. how would they do it( )9.—The digital camera is really cheap.--The ________, the better. I’m short of money these days, you see.A. cheaperB. cheapestC. expensiveD. more expensive( )10.-- ________ is the height of Tom, Helen?--I’m not sure, but he is ________ than Simon.A. What; higherB. How tall; higherC. How tall; tallerD. What; taller( )11.We have two cars and one mouth so that we can listen ________ we speak.A. as twice much asB. twice as much asC. as much as twiceD. as much twice as四、完成句子1.冰箱里没有任何其他东西了。
错题整理的一点心得
错题整理的一点心得在学习的过程中,我们难免会遇到一些难题或错题。
如何正确地整理和复习这些错题,对于我们的学习效果和提高是至关重要的。
在我的学习经验中,我总结了一些整理错题的心得,希望能够对大家有所帮助。
一、及时记录错题在学习中,遇到错题时要及时记录下来,可以使用笔记本或者电子文档进行整理。
记录错题的同时,最好能写下自己对该题的理解和解题思路。
这样做的好处是可以将自己遇到的问题记录下来,方便以后复习和查漏补缺。
二、分类整理错题将错题进行分类整理是一个非常有效的方法。
可以根据错题的类型、知识点、难度等因素进行分类。
这样有助于我们更好地掌握每个知识点的重点和难点,提高我们的学习效率。
三、分析错题原因对于每个错题,我们不仅需要知道错误的答案,还要深入分析错题的原因。
可能是因为对于该知识点理解不透彻,或者是粗心导致的计算错误等。
只有找到错题的原因,我们才能有针对性地进行复习和纠正,避免类似错误的再次发生。
四、补充相关知识在整理错题的过程中,我们有时候会发现自己对某些知识点的掌握并不充分。
这时,我们就需要及时补充相关的知识。
可以通过查阅教材、参考书籍、网上资源等多种途径来了解和掌握这些知识,以免再次犯错。
五、定期复习错题整理错题只是第一步,定期复习才是巩固记忆和掌握知识的关键。
可以将错题按照一周、一月的时间进行复习,巩固对知识点的理解和应用能力。
同时,在复习中还可以将相关的错题进行联想和串联,这样有助于我们对知识的系统化、全面化掌握。
六、与他人讨论交流在整理错题的过程中,我们可以与同学、老师或者学长学姐进行讨论和交流。
通过他们的解题思路和对错题的理解,我们可以获得新的思路和启发。
这对于我们更好地理解和掌握知识是非常有益的。
七、保持积极的学习态度整理错题是一个反思和总结的过程,它不仅能够帮助我们发现不足,还能够培养我们的学习态度和学习意识。
所以,在整理错题时,我们要保持积极的学习态度,相信自己的能力,勇于面对错误和挑战,不断进步。
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错题整理
【2014连云港】Lee Min-ho is ________ actor from South Korea. He sang ________ Chinese pop song on the 2014 CCTV New Year’s Gala.
A. the;an
B. /; the
C. an;a
D. a; /
2.【2014河北】Let’s take ______ photo! Everyone, cheese!
A. a
B. an
C. the
D. 不填
3.【2014达州】—Look! There is a monkey eating ________ apple in the tree.
—En, ________ monkey is very cute.
A. a; a
B. a; the
C. an; an
D. an; the
4.【2014扬州】—Have you seen ________ film Where are We Going, Dad?
—Yes, it’s ________ interesting film!
A. a; the
B. the; an
C. a; an
D. the; the
5.【2014黔西南州】—How was _______dinner at Mike’s house?
—It was great. Mike’s mum is _______ wonderful cook.
A. a; the
B. the; a
C. the; the
D. a; an
6.There were three books on my table.Oneis here.Where are ___?
A.others
B.the others
C.the other
D.another
7.Some of the speakers went straight tothe conference room.____ speakers are still hanging around.
A.The other
B.The others
C.Another
D.Others
8.This is not the only answer to thequestion.There are _____.
A.the others
B.others
C.another
D.the other
9.Please give me ____ chance.
A.other
B.the other
C.another
D.the others
10.He was a wonderful teacher.Everyoneagreed it would be hard to find ____ like him.
A.another
B.other C the other D.the others
11. When you leave, don’t forget ____ off the light.
A. to turn
B. turning
C. turn
D. turned
12. We are busy ____ for the final exam these days.
A. Preparing
B. to prepare
C. with prepare
D. with preparing
13. Soon we saw the thief ____ in the crowd.
A. Disappear
B. to disappear
C. disappears
D. disappeared
14. I d on’t regret ____ her what I thought.
A. Tell
B. tells
C. to tell
D. telling
15. The doctor advised my father ____ in the future.
A. not smoking
B. does’t smoke
C. not to smoke
D. won’t smoke
16.—Come on, Jackl Join us in the exciting game!
—Could you tell me ______ it is about?
A. that
B. what
C. how
D. why
17.—I wonder ___________.
I'm afraid we'll be late.
A. how we can be on time
B. what we are going to do
C. why we get to school late
D. if we will arrive at the meeting on time.
18.—Can we visit Hong Kong this summer holiday?
—I wonder it is the best time to go there.
A. if
B. when
C. what
D. how
19.I want to know you will come back at 8:00 clock tomorrow.
A. that
B. when
C. where
D. whether
20.Can you tell me _____?
A. what does your hometown look like
B. what your hometown look like
C. what your hometown looks like
D. what is your hometown look like
21. If he _______ harder, he will catch up with us soon.
A. study
B. studies
C. will study
D. studied
22. We’ll go to visit Tian’anmen Square ________ it doesn’t rain tomorrow.
A. if
B. as soon as
C. when
D. since
23. –Do you know if we will go to the cinema tomorrow?
–I think we’ll go if we _______ too much homework.
A. will have
B. had
C. won’t
D. don’t have
24. Frank ______ to see his grandma if he ______ free tomorrow.
A. will come, will be
B. comes, is
C. will come, is
D. comes, will be
25. I am waiting for my friend. ________ , I will go swimming alone.
A. If he doesn’t come
B. If he won’t come
C. If he will come
D. If he is coming
二用have been to 和have gone to 填空
1.Tom has_____ to Jim’s home,but he hasn’t come back.
2. They have_____ to the forest alone and returned safely.
3. The Whites have_____ to the U.S.A,They won’t come back.
4.We have____ to the bookshop and bought many books.
5. She has _____to her homeland; she is coming to my home next week.。