中考经典错题集
【中考考点易错题】2021年初三考点错题集
初三错题集第一部分：初三错题集（本部分72道题，满分72分）1、Thank you for ____ me ___ some water.（）A、helping;carryB、help;carryingC、helps;to carryD、helping;carried2、He was busy ___ his homework.After a short rest,he went on ___ it.3、If you don't know the m____ of the new words,you can look them up in a dictionary.4、The criminal should be ____ for what he did.（）A、hangB、hungedC、hungD、hanged5、Could you please give us some ___ advise on how to improve English？（）A、detailsB、detailedC、detailD、detailing6、I love geography and I never get ___ reading geography magazines.（）A、excitedB、excitingC、boredD、boring7、___ no one knows the truth,we don't believe what he said.（）A、WhetherB、WhenC、WhileD、Since8、The pizza looks ___.It's my favourite.（）A、healthyB、lovelyC、deliciouslyD、sweetly9、But ___ has done a lot to help people.（）A、sheB、herC、hersD、herself10、The cat had a broken leg and walked with great p___.11、He practises w____ an article every day.12、After the terrible car accident,Jack became d_____.13、I don't want to ___ her advice because I think it is useless.You are right.I ___ think so.（）A、accept;alsoB、receive;alsoC、accept;tooD、receive;too14、--She ____ herself in the accident.--Really.Do I need _____her ?（）A、touched;visitB、hurt;visitC、touched;to visitD、hurt;to visit15、Tiim used to ___ sports until he hurt his legs in an accident.（）A、loveB、lovesC、lovingD、loved16、Daisy is such a good daughter that she ____ most of her spare time with her parents.（）A、spendsB、costsC、takesD、affords17、Do you know that the Earth is home to ___ animals?（）A、millionB、millions ofC、millionsD、million of18、单词拼写：She is s___ to pass the exam because she studies well all the time.19、I will tell you about this thing ___.（）A、lateB、beforeC、laterD、latest20、We must do everything we can ____ waste water from running into rivers.（）A、keepB、keptC、to keepD、keeping21、___ more about tomorrow's weather,call 121.（）A、KnowB、KnowingC、To knowD、Known22、There is't any difference between the two.I really don't know _____.（）A、where to chooseB、which to chooseC、to choose whatD、to choose which23、Your coat looks nice.Is it ____ cotton?（）A、made inB、made fromC、made ofD、made for24、完成句子:老师教学生们怎样做好准备比赛。
初中英语常见错题集与分析
初中英语常见错题集与分析.答案中考英语易错题77道一、名词、冠词1.– What can I do for you-- I’d like two _______.A. box of appleB. boxes of applesC. box of applesD. boxes of apple答案: B. 选择其它三项的同学要注意仔细看题.不要马虎, 这里box 和apple都是可数名词2.Help yourself to _________.A. some chickensB. a chickenC. some chickenD. any chicken答案: C 选择A的同学要注意chicken当鸡肉讲时不可数3..________ it is todayA. What fine weatherB. What a fine weatherC. How a fine weatherD. How fine a weather答案: A. 选择B的同学要注意weather不可数. 选择C和D的同学要注意weather是名词, 要用what来感叹.4.Which is the way to the __________A. shoe factoryB. shoes factoryC. shoe’s factoryD. shoes’ factory答案: A. 选择D的同学注意这里不是指名词所有格, 而是名词作形容词的用法.类似的用法如: pencil box; school bag等.5.This class ________ now. Miss Gao teaches them.A. are studyingB. is studyingC. be studyingD. studying答案: A. 选择B的同学要注意, 当这种概念名词当“人”讲的时候要做复数处理.类似的还有: the police are running after the thief等6.We will have a _________ holiday after the exam.A. two monthB. two-monthC. two month’sD. two-months答案: B 选择C的同学要注意应用two months’; 选择D的同学要注意名词之间有“—“后的组合词当作形容词来用, 因此就不用所有格形式了.7.________ trees are cut down in the forests every year.A. ThousandB. ThousandsC. Thousand ofD. Thousands of答案: D. 选择C的同学注意词组记忆的准确性8.Our sports meeting will be held ________.A. on 24, Tuesday, AprilB. in April 24, TuesdayC. on Tuesday, April 24D. in April Tuesday 24答案: C. 选B的同学是受到中文的影响,要特别注意中英文的差异9_________ people here are very friendly to us.A. TheB. /C. AD. An答案: A. 选择B的同学要注意这里的people是特指这里的, 因此要用定冠词the10..There is no enough ________ in the corner to put the table.A. placeB. roomC. floorD. ground答案：B 根据句意知道,这里表示没有地方放桌子;选A的同学要注意place 表示地点,是可数名词二、代词11.Some people like to stay at home, but ________ like to go to the cinema.A. anotherB. otherC. othersD. other one答案: C. 选择B的同学要牢记: some…., others….12.-- Is this your shoe-- Yes, but where is _________A. the other oneB. other oneC. another oneD. the others答案: A. 选择C的同学要注意鞋是两只, another指的是三者或者三者以上13.– When shall we meet again next week-- _______ day is possible. It’s no problem with me.A. EitherB. NeitherC. EveryD. Any答案: D. 选择C的同学要注意every指的是每一天都见面, any指的是任何一天都可以.注意中文的干扰14.Have you ever seen ________ big panda beforeA. a suchB. such aC. so aD. a so答案: B 选择A的同学要注意词组记忆的准确性15.-- _______ do you write to your parents-- Once a month.A. How longB. How soonC. How oftenD. How far答案: C. 选择A的同学要注意中文的干扰. 由回答知道这里指的是写信的频率, 用how often表示.16.Robert has gone to _________ city and he’ll be back in a week.A. otherB. the otherC. anotherD. any other答案：C 选择其它三项的同学要注意,这里没有说只有两座城市,因此不能用.17.– A latest magazine, please.-- Only one left. Would you like to have ________A. itB. oneC. thisD. that答案：A 选择B的同学要注意这里指的是上一句中提到的那本杂志,不能用表示泛指的不定代词one18.– Which book would you like to borrow-- ________ of the two books is OK with me.A. EitherB. BothC. AnyD. None答案：A 选择B的同学要注意is 表示单数.19.He knows _________ English ________ French. But he’s very good atJapanese.A. either; orB. both; andC. neither; norD. either; nor答案：C 选择A和B的同学要注意语境.20.– What do your parents do-- One is a teacher; _________ is a driver.A. otherB. anotherC. the otherD. that one答案: C 选择其它三个选项的同学要注意, one is …, the other is …的用法21.Mrs. Lee teaches ________ math. We all like her.A. weB. usC. ourD. ours答案: B 选择C的同学要注意, teach +人+科目, 而不能用teach +某人的+ 科目22.There are many trees on ________ side of the street.A. eitherB. anyC. allD. both答案：A 选择D的同学要注意side为单数;选择B的同学要注意：街道只有两边,因此不能用any23.________ is the population of the cityA. How manyB. WhatC. How many peopleD. How much答案：B 在问到人口是多少时,其实是在说“人口数是什么”,因此不能用A,要注意排除中文的干扰;三、介词、连词24.Japan is ________ the east of China.A. inB. toC. onD. at答案: B in 表示在范围里的, on表示紧挨着的; to 表示在范围以外的25.The postman shouted, “ Mr Green, here is a letter ________ you.”A. toB. fromC. forD. of答案: C 选择A的同学要注意to 表示动作的方向, for表示有从属关系或者利益关系26.We can’t do it ________ your help.A. withB. ofC. underD. without答案: D. 选择C的同学要注意中文的干扰, 借助某人的帮助要用with,反之用without27.He hasn’t heard from his friend __________ last month.A. sinceB. by the end ofC. forD. until答案: A 选择B的同学要注意B选项为过去完成时的时间;选择C的同学要注意, for+时间段; 选择D的同学要注意不是not…until 句型.until + 句子28.I didn’t buy the dictionary yesterday _________ my aunt would give meone.A. untilB. becauseC. ifD. before答案: B 选择A的同学要注意语境29.I’m going to look for another job ________ the company offers me more money.A. afterB. unlessC. whenD. for答案: B 选择其它三项的同学要注意语境, 这里是指除非公司给我更多工资,否则我就要找其它工作.30.Don’t hurry. The bus won’t start ________ everybody gets on.A. sinceB. asC. untilD. when答案: C 选择D的同学要注意前面是否定.31.Please show me _________ to send an e-mail, John. It’s the first timefor me to do it.A. howB. whatC. whenD. where答案：A 选择C的同学要注意认真看题,这里的time不是时间,而是指第一次32.You’ve passed the exam. I’m happy ______ you.A. onB. atC. inD. for答案：D 选择A的同学要注意记忆词组的准确性.33.I wonder ________ they finished so many different jobs in such a short time.A. whyB. howC. whenD. where答案：B 选择A的同学要注意语境,这里指他们怎么能在如此短的时间里完成如此多的困难的工作.34.-- Do you speak English-- Yes, I speak _________ a little English _______ some French.A. neither, notB. both, orC. either, orD. not only, but also答案：D 选择C的同学要注意语境.35.______ the maths problem is difficult, I’ll try very hard to work it out.A. ThoughB. WhenC. BeforeD. After答案：A 选择B的同学要注意语境.不能说当题目难的时候,我将努力.而是说尽管题目难,但我将努力解决.36.The accident took place ________ a cold February evening.A. onB. inC. atD. for答案：A 选择B的同学要注意,在特指的早上、下午、晚上,不用in要用on37.He turned ________ the radio because his father was asleep.A. onB. downC. upD. over答案：B 根据语境：他爸爸睡着了,因此不能用A-打开,也不能用C-调大.D 表示反过来38.I don’t know the homework _______ today.A. onB. inC. ofD. for答案：D 选择C的同学要注意of表示从属关系,要注意中文的干扰.39.– Oh, it’s raining heavily.-- Please don’t leave ________ it stops.A. whenB. afterC. sinceD. until答案: D 选择其它选项的同学要注意读懂句子, 只有把语境搞清楚才能答对问题.40.Jane said she would come here ________ 9:00 and 9:30 tomorrow morning.A. fromB. atC. betweenD. around答案: C 选择B的同学没有把体看完整; 选择A的同学没有注意到from…to…的搭配.四、动词41.My father went to Shanghai yesterday. He ______ back in two weeks.A. comesB. has comeC. will comeD. came答案: C 选择D的同学要注意in +时间段, 表示在未来的一段时间,应用将来时42..It’s spring now. The students ________ trees these weeks.A. plantB. are plantingC. will plantD. planted答案: B 选择A的同学要注意 these weeks 并不表示经常做某事,而是强调这几个星期同学们一直在种树.43..-- __________ you ________ your book to the library-- Yes. I returned it yesterday.A. Did, returnB. Have, returnedC. Will, returnD. Do, return答案: B 选择A的同学过分注意回答用了一般过去时, 但在上一句中, 并没有给出过去的时间,强调你现在是否还书了, 应用现在完成时.44.– Must I finish it now-- No, you ________.A. mustn’tB. needn’tC. can’tD. shouldn’t答案: B 选择A的同学要注意mustn’t意思指不允许, needn’t指的是不必要.45..Though it’s cloudy now, it _________ get sunny later.A. canB. mayC. mustD. need答案: B 选C的同学要注意语境, 这里强调过些时候也许会晴天, 表示推测性.46.It is in the library, you _______ talk loudly.A. may notB. can’tC. needn’tD. mustn’t答案: D 选择B的同学要注意中文的干扰.can’t表示不能够;47..If anyone wants to say something in class, you ________ put up your hands first.A. mustB. mayC. shouldD. can答案: A 选其他三个选项的同学要注意语境,anyone暗示出语气;表明是一个规定,而不是建议;48.– I called you last night but no one answered the phone.-- I ________ dinner with my friends in the restaurant.A. haveB. hadC. was havingD. have had答案：C 选择B和D的同学要注意分析语境.这里指我当时正在和朋友在饭馆吃饭.49..If you have lost a library book, you have to _________ it.A. find outB. look afterC. pay forD. take care答案：C 选择A的同学要注意语境50..He will call me as soon as he _________ the city.A. reachesB. reachedC. will reachD. is reaching答案：A 选择B的同学要注意主将从先51.The pen _________ him ten yuan.A. paidB. costC. tookD. spent答案：B 选择C的同学要注意took通常用在时间上；选择A和D的同学要注意,这里的主语是物品,因此不能用paid 和spent52..The train _________ for twenty minutes.A. leftB. has leftC. is leavingD. has been away答案：D 选择B的同学要注意,当用完成时表示持续动作时,要选择可持续动词,不要用瞬间动词.53..– How many books _____ they ________-- Five. But they haven’t finished reading even one.A. did…borrowB. had…borrowedC. will…borrowD. do…borrow答案：A 选择B的同学要注意,这里只是问过去发生的一件事,并不是过去时间之前发生的.54.He _________ his bike so he has to walk there.A. lostB. has lostC. had lostD. loses答案：B 选择A的同学注意句子并没出现两个时间点,因此要注意时态的前后一致.55.– Why did the policeman stop us-- He told us not _______ so fast in this street.A. driveB. drivingC. to driveD. drove答案：C 这里考查的是tell sb. not to do sth.五、形容词、副词56.The population of the world in 20th century became very much_________than that in 19th.A. biggerB. largerC. greaterD. more答案: B.选择其它三项的同学要注意population的固定搭配是large57.Miss Li is one of _______ in our school.A. a popular teacherB. more popular teacherC. most popular teacherD. the most popular teachers答案:D.选择其它三项的同学要注意one of + 复数的用法.58.The magazines are ________ easy that the children can read them well.A. suchB. soC. tooD. very答案: B 选择A的同学要注意easy是形容词,要用so…that, 而不用such…that59.– Would you like ________ more tea-- Thank you. I’ve had ________.A. any, muchB. some, enoughC. some, muchD. any, enough答案：C 选择B的同学要注意enough是形容词, 不能说had enough60.I think basketball is _______. I like to watch it.A. boringB. boredC. excitingD. excited答案：C 选择D的同学要注意basketball本身很令人激动,excited表示被什么所感染而激动;61.This dinner looks _______ to me, and I like it.A. terribleB. goodC. badlyD. nicely答案：B 选择D的同学要注意look在这里是系动词,后面要加形容词;62.The math problem is so hard that ________ students can work it out.A. a fewB. a littleC. manyD. few答案：D 选择A、C的同学要注意语境,这里指没有什么学生能做出来;63.– What’s the weather like tomorrow-- The radio says it is going to be even ______.A. badB. worstC. badlyD. worse答案：D 选择A的同学要注意,even＋比较级64.Though she talks ______, she has made ________ friends here.A. a little, a fewB. little, fewC. little, a fewD. few, a few答案：C 选择A的同学要注意语境,这里指虽然她不怎么说话,但她有一些朋友.65.He never does his work _______ Mary.A. as careful asB. so careful asC. as carefully asD. carefully as答案：C 选择A和B的同学要注意work 是行为动词,要用副词来修饰.六、句法66..If it ________ tomorrow we’ll go to the park.A. will not rainB. doesn’t rainC. is not rainingD. didn’t rain答案: B 选择A的同学要注意if引导的条件状语从句主句用将来时, 从句用一般现在时.67.The radio says the snow ______ late in the day.A. stopsB. will stopC. has stoppedD. stopped答案: B. 选择A的同学要注意语境, late in the day表示“晚些时候”, 要用将来时68.The nurse told the children the sun ______ in the east.A. risesB. roseC. will riseD. has risen答案: A 选择B的同学要注意, 虽然主句中用了told, 但太阳从东方升起是真理性事实, 应用一般现在时表示.69.– Are you sure you have toIt’s been very late.-- I don’t know ______ I can do it if not now.A. whereB. whyC. whenD. how答案: C 选择D的同学要注意语境, 根据语境知道这里强调的是必须先在做,否则就没有时间了70.- Could you tell me _______ she is looking for-- Her cousin, Susan.A. thatB. whoseC. whomD. which答案: C 选择其它三项的同学要注意语境,这里是指找Susan这个人71.– When are the Shutes leaving for New York-- Pardon-- I asked ___________.A.when are the Shutes leaving for New YorkB.when the Shutes are leaving for New YorkC.when were the Shutes leaving for New YorkD.when the Shutes were leaving for New York答案: D 选择B的同学注意到了宾语从句的语序,但同时要注意时态要用相应的过去时.72.Would you please tell me ________ next, Mr WangA. what should we doB. we should do whatC. what we should doD. should do what答案: C 选择A的同学要注意宾语从句的语序为陈述语序.73.Mr. King didn’t know _______ yesterday evening.A. when does his son come backB. when his son comes backC. when did his son come homeD. when his son came home答案: D 选择C的同学要注意考虑宾语从句的陈述语序74.Alice has gone to the classroom and she didn’t say ________.A. when did she come back C. when would she be backC. when she came backD. when she would be back答案：D 选择C的同学要注意语境,这里要用过去将来时.75..– I’m sorry I broke your coffee cup.-- Oh, really _________.A. It doesn’t matterB. I don’t knowC. it’s OK with meD. You’re welcome答案：A 选择C和D的同学要注意中文的干扰.D是用来回答别人的致谢的.76.– Would you mind calling me back tomorrow again-- _________.A. Not at allB. You’re welcomeC. You’re rightD. Nice to meet you答案：A 同62题77.He hardly had anything to eat, ________ heA. didn’tB. hadn’tC. hadD. did答案：D 选择A的同学要注意hardly表示否定；选择B和C的同学要注意,反意疑问句要用助动词.。
初三语文错题集
初三语文秋季学习规划月份知识框架9月记叙文阅读技巧与经典考题衔接、文言文同步阅读复习10月文言文同步阅读复习、经典记叙文阅读考点链接、作文基本情节设计、期中考复习11月文言文同步阅读复习、经典议论文阅读考点链接、作文描写设计12月议论文阅读技巧与考题链接、文言文同步阅读复习、作文描写设计1月语言文字运用及考题链接、名著考点重点复习、期末考复习重点难点：记叙文阅读技巧【例题】【福州中考2012】点燃一个冬天游睿山村的冬天就是来得早，寒气在十月刚过就开着队伍铺天盖地地卷过来。
村里的人似乎都有些怕了，早上八点还没有多少人起床。
只有几根玉米杆子被寒气冻得瑟瑟地颤抖。
孙老师和自己的女人却早早地起床了。
“瘟天，又是下雨。
”女人没好气地骂着，“一连倒了这么多天，天上的水也该倒得差不多了。
”孙老师笑了笑。
大块大块的谋早就堆在了操场的角落。
孙老师说：“生火吧，我已经听到孩子们的脚步声了。
”女人望天，叹气。
“瘟天！”女人又咧咧地骂。
走路的时候一步比一步用力，只差把地踏出一个坑。
女人用了几块木炭放在了煤的中央，然后嗤地划了根火柴。
“瘟天，还下雨，我们这冬天就无法过了。
”女人说。
孙老师知道，女人说的是煤。
这点煤是女人用背篓一块一块背回来的，女人背煤背得很辛苦。
女人想用这些煤度过这个冬天。
孙老师不说话，他听见了孩子们的脚路着水的声音。
这声音渐行渐近。
孙老师就想起他们沾满黄泥的裤腿，露出脚趾的胶鞋，贴着脸皮的头发和准备钻进嘴里的鼻涕……孙老师说：“但愿这是最后一个雨天。
”这时孩子们来了。
整整齐齐的叫了一声老师好。
孙老师喂喂的应着，说放下书包，快来烤烤，烤干身上我们马上上课。
【A】学生们就如一群鱼儿一样游在那堆火旁边，一边伸出湿漉漉的裤腿和鞋，一边在雾气里说着谁早上没等谁，谁昨天放学后看见了孙老师做什么了。
孙老师笑着招呼，都来烤烤，别冻着了。
女人在一边默默地看着。
半晌，女人说，我有事先走了，你们慢慢烤。
女人挎着背篓慢慢地被雾帘遮住。
初三错题集——精选推荐
错题集( ) 1. There are a lot of _____ in our school. They work very well.A. man teachersB. men teachersC. men teacher( ) 2. Lily as well as Lucy _____ to school on foot.A. goB. goesC. who go( ) 3. Either Mike or his classmates _____ in the classroom.A. isB. areC. was( ) 4. Can you imagine what he will be like in _____ time?A. ten yearsB. ten year’sC. ten-year’s( ) 5. They told us that their next match was against _____ team from another.A. a boy’sB. the boy’sC. the boys’( ) 6. The police _____ having a meeting now.A. isB. areC. were( ) 7. _____ Greens were having dinner when the phone rang.A. AB. /C. The( ) 8. He’s a doctor, he works in _____ hospital.A. aB. /C. the( ) 9. Can you give me _____ eighth cake? I’m very hungry.A. aB. anC. the( ) 10. The young _____ interested in action movies.A. isB. areC. was( ) 11. Tom, look at the man in black over there. Can you tell me _____? ---He’s an engineer.A. who is heB. who he isC. what is heD. what he is( ) 12. The young lady _____ is a friend of my sister’s.A. who I had a talkB. whom I had a talk withC. whom I had a talkD. which I had a talk with( ) 13. Please do that _____ he told you.A. asB. /C. untilD. because( ) 14. I’m new here. Could you tell me _____, please?A. where the first bus arriveB. when the first bus arrivesC. when will the first bus arriveD. when did the first bus arrive( ) 15. As soon as he comes back, I’ll tell him when _____ and see him.A. you will comeB. will you comeC. you come( ) 16. I don’t know _____.A. what has happened to himB. what happened to himC. which happened to himD. what had happened to him( ) 17. I won’t leave my office until my work _____.A. finishB. will finishC. is finishD. was finish( ) 18. Mary has received several letters from her hometown since she ____ to the city.A. cameB. comesC. has comeD. had came( ) 19. A lot of children have to wear glasses _____.A. as they watch TV too muchB. though they like reading in bed.C. so they play too many computer games( ) 20. No matter _____ busy he is, he spends sometime playing with his children.A. whatB. whenC. howD. where( ) 21. ---Will you go to the dinner party? ---I won’t go unless Tom _____.A. is invitedB. will be invitedC. was invited( ) 22. The People’s Republic of China _____ on October 1st, 1949.A. foundB. was foundC. is foundedD. was founded( ) 23. ---The sport shoes must be Mike’s.---No, they ____ be. They are too small for him.A. mustn’tB. can’tC. may notD. might not( ) 24. He doesn’t play the piano so _____ as his sister.A. goodB. betterC. wellD. best( ) 25.--- Don’t forget to turn off the lights if you are the last one to leave. ----_____.A. Me eitherB. I won’tC. Me too C. I will( ) 26. Y ou can’t sneeze and keep your eyes ____ at the same time.A. openB. opensC. openedD. opening( ) 27.--- Have you found the information about that famous writer ____ you can used for the report?----Not yet. I’ll search some on the Internet.A. whoB. whatC. whomD. which( ) 28.( )( )( )( )( )( )( )( )( )( )( )( )( )( )。
九年级语文数学英语三大科容易出错的题目和答案详细分析
九年级语数英三科高频易错题集和答案详细分析九年级语文高频错题集1.【题文】下列词语中没有错别字的一项是（）A.次第起源榆叶梅北燕南飞B.纬度侯鸟桃花开周而复始C.刺槐连翘逆温层冰雪融化D.采集悬殊生态学哀草连天2.【题文】3.【题文】下列语言表述得体的一项是（）A.我常常想，那些虚长我几岁的哥哥姐姐，是怎样让自己的青春年华变得充实自在而又缤纷多彩的。
B.自从上次班主任老师造访我家后，我和爸爸妈妈的关系逐步变得融洽和谐。
C.我们载歌载舞，热烈欢迎四面八方的客人莅临学校。
D.在朋友家，我发现这个原本冷冷清清的地方因为我们的欢声笑语而蓬荜生辉，温馨美好。
4.【题文】下列加点字的注音全都正确的一项是（）A.蓼溆（liǎo xù）麈尾（lù）捉弄（zhuō）镶金（xiāng）B.银箸（zhuó）岔气（chà）促狭（xiá）丫鬟（huan）C.戗金（qiàng）漱盂（shù）发怔（zhèng）潇湘（xiāo）D.琥珀（pò）筵席（yàn）调停（tiáo）撑船（chēng）5.【题文】下列句中没有语病的一项是（）A.上下几千年，知名的书法家很多，但谁也不能否认，王羲之不是继往开来的宗师。
B.琴棋书画，博大精深，玄妙无穷。
它在纵横线条中凝聚哲思，于黑白方圆中演绎热情。
C.虽然好天气让百姓的菜篮子轻松了，却让不少蔬菜批发商、商户和菜农发了愁。
D.当你不去旅行、不去冒险、不过没试过的生活，每天只是挂着QQ，刷着微博，逛着淘宝，干着80岁都能做的事情，那么你要青春有什么用!6.【题文】下列句子中没有语病的一项是（）A.近年来科学家发现了一种憎水玻璃，为戴眼镜的人解除了苦恼。
B.校长、副校长和其他学校领导出席了这届毕业典礼。
C.只有对老师所提的问题理解到位，就能回答得清楚明了。
D.目前，中国运载火箭技术研究院已经启动长征九号的关键技术研制。
[原创]2014年 《南方新中考》 物理 第3部分 中考经典错题集[配套课件].ppt
![[原创]2014年 《南方新中考》 物理 第3部分 中考经典错题集[配套课件].ppt](https://img.taocdn.com/s3/m/6cf34d84d0d233d4b14e6976.png)
比热容、密度是物质的特性，同一种物质，密度、 比热容一般是固定不变的，但当物体状态改变时，密度、比热
容将随着物态的变化而变化．注意区别“温度升高到”与“温 度升高了”的不同．
四、电磁学 易错题 7：(2011 年重庆)在图5所示的电路中，闭合开关 后两盏灯都可能发光的是(
)
图5 A．只闭合开关 S1 C．只闭合开关 S1、S2 B．只闭合开关 S2 D．开关 S1、S2、S3 都闭合
错误原因：未正确识别电压表并联在哪部分电路，测的是
哪部分电路的电压．该题中的电压表测的是定值电阻 R1 两端的
电压．
答案：D 串联电路中，滑动变阻器电阻变小，会导致电 路中的总电阻变小，电路中的电流变大．根据串联电路的分压 作用可知，变阻器两端分担的电压变小，其他电阻两端分担的 电压则变大.
易错题 11：如图 7 所示的两个电路，当滑动变阻器滑片 向右移动时，灯泡 L1、L2 亮度变化情况是( )
(1) 纸 杯 壁 上 出 现 小 水 珠 的 现 象 属 于 哪 种 物 态 变 化
________________.
(2)请简单解释这个现象形成的原因．
__________________________________________________ ______________________.
易错题 4：(2011 年广州)图 4 是投影仪的成像示意图． 其中凸透镜的作用是成________(填“等大”“缩小”或“放 大”)、________(填“正立”或“倒立”)的实像，平面镜的作
用是________________．如果图中 h＝40 cm，则凸透镜焦距不
可能小于________cm.
图3
A．小丽离被拍同学的距离远些，镜头要往前伸 B．小丽离被拍同学的距离近些，镜头要往后缩 C．小丽离被拍同学的距离远些，镜头要往后缩 D．小丽离被拍同学的距离近些，镜头要往前伸
九年级物理高频错题集(后附参考答案)
九年级物理高频错题集1.【题文】一根纱线容易拉断，一根铜丝不容易拉断，这个现象说明了A.纱线内分子不存在引力，铜丝分子间只有引力B.纱线内分子间只存在斥力，铜丝分子间不存在斥力C.纱线内分子间的引力比斥力小，铜丝分子间引力比斥力大D.纱线内分子间相互作用力比铜丝间相互作用力小2.【题文】关于物质的组成，下列说法错误的是A.物质是由分子组成的B.原子由原子核和中子组成C.原子核由质子和中子组成D.质子和中子还有更小的精细结构3.【题文】关于分子动理论，下列说法中不正确的是A.物质是由大量分子组成的B.温度越高，分子的运动越剧烈C.分子是组成物质的最小微粒D.固体很难被压缩，说明分子间存在斥力4.【题文】小明在广口瓶内装入一些细沙，用带孔的软木塞堵住瓶口，并在木塞的小孔中插入一支温度计，如图所示，然后用干燥的厚棉布裹住广口瓶，用力迅速上下摇动瓶内细沙。
下列说法中正确的是A.小明会观察到温度计的示数不变B.这一实验证明了做功可以改变物体的内能C.这一实验证明了热传递可以改变物体的内能D.用干燥的厚棉布裹住广口瓶的目的是防止掌心和瓶内的相互传热5.【题文】关于温度、热量和内能，下列说法正确的是A.物体的内能增加，温度一定升高B.物体温度升高，一定吸收了热量C.物体温度降低，内能一定减少D.物体吸收了热量，温度一定升高6.【题文】有甲、乙、丙、丁四个轻质小球，乙带正电，把四个小球分别两两靠近时，发现乙吸引甲，丙吸引乙，丁吸引丙也吸引甲，则丁球的带电情况是A.可能带负电，也可能不带电B.可能带正电，也可能不带电C.不带电D.可能带负电，可能带正电，也可能不带电7.【题文】如图所示用被丝绸摩擦过的玻璃棒接触验电器的金属球，发现验电器的两个金属箔张开，对这一现象理解正确的是A.金属箔因带负电荷相互排斥而张开B.金属箔因带正电荷相互排斥而张开C.金属箔因带异种电荷相互排斥而张开D.无法确定金属箔带电情况用如图所示电路研究电流跟电压的关系。
完整word版-初三上学期数学错题集(一二)及答案
初三上学期数学错题集（一元二次方程）（一） 2012.09.09已打印1、若方程（m-2）x㎡-2+mx2=7是关于x的一元二次方程，则m的值为。
2、根据题意，列出方程：（不必求解，写出一般形式）学校图书馆去年年底有图书5万册，预计到明年年底增加到7.2万册，求这两年的平均增长率。
3、方程x2=0的实数根有（）A．0个B．1个C．2个D．1个或2个4、下列二次三项式中，是完全平方式的是（填序号）。
①9x2-12xy+4y2；②4y2-4y-1；③x2-25x+5；④2x2-4x+1；5、写出一个一元二次方程，使它的两根：一根是正数，另一根在-2与-1之间。
6、方程（x-2）(x+3)=6的解是（）A．x1=-4,x2=3 B．x1=2,x2=3C．x1=2,x2=-3 D．x1=4,x2=-37、用因式分解法解方程5（x+3)-2x（x+3)=0，可把它化为两个一元一次方程、求解。
初三上学期数学错题集（一元二次方程）（二）2012.09.15已打印1、解方程：（1）3y(y-1)2=2-2y （2）7 x2=21x （3）（x2+1）2-3(x2+1)-28=02、若△ABC的边长都是方程x2-10x+21=0的根，求△ABC的周长。
3、若△ABC 的边长都是方程x 2-7x+12=0的根，求△ABC 的周长。
4、已知P=157m-1,Q= m 2-158m(m 为任意实数)，则P 、Q 的大小关系为 （ ） A ．P<Q B. P=Q C. P>Q D.不能确定 5、关于x 的方程（k+1）x 2+2(k+1) x+k=0无实数根，则k 的取值范围是 。
6、已知a 是整数，满足⎩⎨⎧>->+023013a a 试解关于x 的一元二次方程x 2-4=x(ax-3).7、k 为何值时，关于x 的方程（k-1）x 2-(2k+1) x+k+1 = 0（1）有一解？（2）有两个不相等的实数根？8、已知△ABC 的两边AB 、AC 的长是关于x 的一元二次方程x 2-(2k+1) x+k(k+1) = 0的两个实数根，第三边BC 的长为5.（1）k 为何值时，△ABC 是以BC 为斜边的直角三角形？（2）k 为何值时，△ABC 是等腰三角形？并求△ABC 的边长。
九年级中考错题集
九年级英语错题集1. She practices English by _________ .A. red aloudB. reading aloudC. read loudlyD. reading loudly 2. Han Mei often practices __ English.A. speaksB. to speakC. speakingD. spoken3. What about ____ English-language videos? A. looking B. looking at C. seeing D. watching4. It 'stoo hard ___ the voices. A. to understand B. not to understand5. I spent a lot of money ____ this beautiful house.A. inB. onC. atD. with6. We had trouble ____ complete sentences.A. makeB. makingC. to make7. There is no chair for me ____ .A. to sitB. to sit onC. sit 8. Chinese is hard to learn for Mario, but he never __ .A. gives up itB. gives it upC. gives in itD. gives it in9. Can you teach me _____ the computer?A. how usingB. how to useC. what to useD. what using10. I used to __ sweets when I was a child.A. ateB. eatingC. eatD. eats11. My broter is good at footbal. He is ___ the school football team.A. intoB. onC. ofD. with12. My mother got used to __ at weekends.A. does houseworkB. doing homeworkC. doing houseworkD. did homework 13. Wei Hua used to be short, _____ ?A. didn 'tsheB. don 't youC. were youD. wasn t 'she14. Many girls are afraid of __ alone at night.A. walkB. walkingC. walkedD. to walk15. My son spends too much time ___ computer games.A. to playB. playC. playsD. playing16. My student sems __ thekey to the questions, so I let hime sit down.A. knowB. knowingC. knewD. to know17. It ___that Mary has changed a lot.A. seemB. seemsC. lookD. seemed18. The policemen do not allow ______ here.A. to smokeB. smokingC. smokeD. smoked19. Her parents allowed her __ to the party.A. to goB. goingC. goD. went20. ---David is only ten years old. I don 't think he ___ to ride his bicycle in the street.---I agree with you. It may be dangerous for a child to ride in the street.A. should allowB. should is allowedC. should be allowedD. shouldn 'tbe allowed21. He is only five. I don 't think he is ___ to go to school. C. understand D. madeD. sitting on D. not understandA. young enoughB. old enoughC. too oldD. too young22. He should stop ____ that terrible hat.A. to wearB. wearC. wearingD. wore23. ---We have a lot of rules at my house.A. So do weB. So we doC. So have weD. So we have24. It 's not allowed for children ____ .A. to get their ears piercedB. to get their ears piercingC. to get their ears to pierceD. to get their ears pierce25. They went on working instead of _____ a rest.A. haveB. hasC. to haveD. having26. Mr. Wang is strict ______ us and we feel a little afraid of him.A. toB. withC. onD. in27. ---Must I study now, Mum?---No, you _______.A. needn 'tB. may notC. mustn'tD. couldn 't28. I want to have my hair _____ .A. cutB. cuttingC. to cutD. cutted29. If I _____ a wallet, I would give it to the police.A. findB. foundC. findingD. find30. I don 't know if he __ . If he ____ , please tell me.A. will come, will comeB. comes; comesC. will come, comesD. comes, will come31. I get up early every day and study hard because I don 't want to let my parents _ .A. upB. downC. inD. out32. Many students son[ ‘t like studying English.. they think there isn[ ‘t___ in English books.A. anything interestingB. something interestingC. anything somethingD. new anything33. It is important ____ the environment around us.A. to us to protectB.for us to protectC. for us of protectingD. for us to protecting34. We are all __ moved by those moving pictures about Wenchuan Earthquake.A. seriouslyB. deeplyC. deepD. very35. ____________________________________ He would rather take a bus to school than______________________________________ a taxi, for it 's cheaper.A. ridingB. rideC. to rideD. rides36. What ____ y ou fell and hurt your knee?A. weatherB. whetherC. thoughD.if37. This bag ___ be Li Ping 's because there is his name on it.A. mustB. mayC. can'tD. could38. ---Who is the girl under the big tree? Is it your sister?---No, it _______ be her, she is much thinner.A. mustn 'tB. may notC. can'tD. needn't39. He can 't come ______ the bad weather.A. sinceB. asC. becauseD. because of40. Some of the books belong to you, while the rest are ___ .A. his and myB. his and mineC. him and meD. him and mine41. ___________ There a pool, but here stands a tall building instead.A. use to haveB. used to beC. used to haveD. use to be42. My son ____ playing computer games to watching TV.A. likesB. enjoysC. hatesD. prefers\43. Our English teacher likes music ___ hot and exciting.A. thatB. that isC. whichD. which are44. The watch is ___ tells the time.A. whichB. the one thatC. thatD. which that45. They prefer __to _____ .A. swim, runB. swimming, runC. swimming, runningD. to swim, running46. I prefer __my homework rather than ___ such a boring film.A. do ，seeB. to do, seeC. doing, seeingD. to do, to see47. The number of people ___lost homes reached 250,000.A. whichB. whoC. whomD. /48. These old things remind them ___ old days.A. ofB. toC. withD. back49. I ____ 100 books over the years.A. readB. readingC. having readD. have read50. We are sure __ the match.A. winB. winningC. of winD. to win51. I suggested ___ the meeting off.A. takeB. putC. puttingD. to put52. ______________________ We live in a small village Changfeng.A. callingB. which calledC. is calledD. called53. The film is very ___ . Everyone of us is _____ i n it.A. interesting, interestingB. interested, interestedC. interesting, interestedD. interested, interesting54. What made you ______ I was late last time?A. thinkB. thinkingC. to thinkD. thought55. Why not consider _ Kunming for your next vacation?A. visitingB. to visitC. visitedD. visitor56. It 's best __ by air if you want to visit Hawaii.A. to travelingB. travelingC. to travelD. travel57. Would you like ____ some juice?A. drinkB. drinksC. to drinkD. drinking58. Look! That 'sthe office __ I work.A. whereB. thatC. the oneD. what59. The boy decided _______ a sailor.A. not becomeB. don 't becomeC. not to becomeD. to not become60. _ is convenient to buy things in the supermarket.A. ThatB. ThisC. ItD. They61. You ___ b e here on time, but you are late.A. suppose toB. are suppose toC. supposed toD. are supposed to62. He made a living ____ newspapers.A. by sellingB. for sellingC. with sellingD. from selling63. I 'm sure you can provide me ____ some information about Hainan Island.A. forB. toC. onD. with64. How dirty your room is. You must ___ .A. clean up itB. clean them upC. clean it upD. do some cleanings65. When do you plan to set _ an interest group?A. offB. outC. upD. to66. Tom, could you please help me ___ the picture on the blackboard? We need it.A. put awayB. put offC. put onD. put up67. You can't put off ___the metting, there 's little time left this week.A. haveB. hasC. to haveD. having68. Jim, could you help me __ my homework?A. onB. inC. aboutD. with69. My dog 's death makes me very ____ . I miss her very much.A. happyB. sadC. unhappyD. sadly70. ---What do you do, James?---I _____ m y own bike, or I must walk to school tomorrow.A. hand outB. fix upC. give awayD. call up71. Not only ___ study English, but they study Japanese and French.A. do theyB. theyC. did theyD. will they72. ________ J im his father. They are both friendly and outgoing.A. looks likeB. takes afterC. looks afterD. takes like73. Not only Mary but also I ____ f rom China.A. isB. areC. amD.was74. --- Could you do something for me, please?A. With pleasureB. For pleasureC. With great pleasureD. My pleasure75. I 'll send you a photo of __ if you like.A. his B he C. she D. himself76. It ___ m e a quarter to go to school on foot every day.A. tookB. spentC. costD. paid77. The dictionary _____ me 20 dollars.A. spentB. tookC. costD. paid 78. Le t s'___ a newidea for increasing sales.A. come up withB. keep up withC. begin withD. meet with79.The workers were made ___the whole day.A. workB. to workC. working80.It 's better __ more tres in the desert.A. plantB. to plantC. to planting81. It is said that tea was invented ___ .D. worked D. for plantingA by accidents B. by a accident C. by accident82.He won 'tgo to bed until his homework _____ .A. will finishB. will be finishedC. is finishing83. Keys _____ u sed for ____ the doors.D. by the accident D. is finishedA. is; openingB. is; openedC. are; opening84. _____ of last month, he had fixed 30 bicycles for others.D. are; openedA. At the endB. By the endC. In the endD. At the end85. My mother told me that my homework must ___ o n time.A. finishB. be finishC. be finishedD. finished86. It ______ discovered __17 th century.A. wasn 't; untilB. didn 't'untilC. didn 't 'beforeD. doesn't; till87.There __going to _____ s ome important news in tomorrow 's newspaper.A. is; beB. are; beC. is; areD. are; is88. Can you tell me who the play _____ in 1999?A. was written byB. was writtenC. is written by89.---Where is Jim? Does anybody know?D. is written---He has ______ Boston.A. goneB. gone toC. been toD. been90. ____ t he time I heard the noise, it had already gone.A. ByB. WhenC.AtD. From91. He 's never been away from school, ___ h e?A. isn 'tB. isC. hasD. hasn't92. By the time it ____ to rain, we ____ home.A. began, had gotB. had begun, gotC. had begun, had gotD. began, got93. Please wake __when you finish your work.A. up himB. him upC. he upD. up he94. __________ He was that he is liked by us all.A. such clever a boyB. so clever a boyC. too clever a boy95. My parents ___ for 6 years.A. marriedB. got marriedC. have been marriedD. have married96. She forgot __her homework to school yesterday, so the teacher became angry.A. to takeB. to doC. takingD. doing97. ______ , and you 'll have a good idea.A. To work hardB. Work hardC. Working hard98. Mother tells us ___ anything before we wash our hands.A. not to eatB. don 'teat99. Will you please tell me ___?A. where Pudong Airport isC. how can we get to Pudong Airport 100. ________________________ Cou ld you please tell me ___________ ?A. where is there a good place to playC. where is there a place playing C. won 't eatD. shouldn 't eatB. how far PudongAirport wasD. when was Pudong Airport builtB. where there a god place plays D. where there 's a good place to playD.Worked hard。
中考经典错题集,精心整理版
易错题：例 1】 物体重为 0.5N ，把它放入盛有水的烧杯中，溢出重为0.3N 的水，则它受到的浮力（ ）A.0.3NB. 0.5NC.可能为 0.2ND. 可能为 0.4N与容器底部紧密接触的物体 中加入一些食盐，请问物体 A. 变大 B. 变小例 3 】 小明从学校旁边的小商店买了瓶饮料，饮料瓶子的形状如图所示，开始满瓶的饮料给小明喝了一些后，问剩余的饮料对瓶底的压力与剩余饮料自身的重力关系是（A ．压力大于重力B ．压力小于重力C ．压力等于重力D ．无法确定例 4】 如图所示的装置，已知物体 A 重为 60N ，在水平拉力 F 的作用下，物体 以0.2m/s 的速度做匀速直线运动，物体与水平地面之间的摩擦力为 12N ，若滑轮组的机械效率为 80%，则在 4s 内拉力 F 所做的功是 J 。
例 5】 如图，金属球 A 下吊着一个金属球 B ，恰好悬浮于水中．现沿杯壁往容器中 加入一定质量的水，结果金属球 B （ ） A ．上浮 B ．下沉 C ．悬浮 D ．以上均不对 例 6】 如例五图所示，气球 A 下吊着一个金属球 B ，恰好悬浮于水中．现沿杯壁往 容器中加入一定质量的水，结果金属球 B （ ） A ．上浮 B ．下沉 C ．悬浮 D ．以上均不对例 7 】 下列说法正确的是（ ）A ．受摩擦力的作用的两个表面一定受弹力作用B ．摩擦力一定与物体运动方向相反C ．真实值与测量值之间的差异叫做误差D ．在光的反射过程中，入射角等于反射角E ．在平面镜成像过程中，物距等于像距F ．导体电阻一定时，导体两端电压与通过该导体的电流成正比G ．把装在盆里的水泼出去，这是利用了盆的惯性H ．将锤柄在石墩上撞击几下，松动的锤头就紧套在锤柄上，这是利用了锤头的惯性 I ．刘翔冲过终点线后，还得向前运动一段距离，这是由于刘翔受到了惯性的作用J ．某一物体温度降低的多，放出热量就多 K ．温度高的物体比温度低的物体含有热量多 L ．温度总是从物体热的部分传递至冷的部分 M ．1 牛的水可以产生 100 牛的压力【例 2】 定FAA 的体积为 100cm 3，浸没在水中，A 受到的浮力如何变化（ ）N．1 牛的水可以产生100 牛的浮力高频题：力和运动：例 8】 热气球以速度 v 匀速上升至 H 高度时，吊篮中突然掉出一只质量为 m 的小球，此后热气球上升速度将 v ；若不计空气对小球的作用力，且假设小球落地时与地面碰撞过程中机械 能没有损失， 则小球落地后再上升的最大高度将 H （选填“大于”“等于”“小于”）例 9 】 “蹦极”是一种富有刺激性的勇敢者的运动项目，如图所示，一根弹性橡皮 绳的一端系住人的腰部，另一端系于跳台。
中考物理错题本(超全!不看是你的损失)
中考物理错题大全初中物理经典易错题100例－力和运动１．在湖中划船时，使船前进的的动力是（）A.桨划水的推力B.水直接对船的推力C.人对船的推力D.水对桨的推力2.踢到空中的足球,受到哪些力的作用( )A受到脚的作用力和重力 B受到重力的作用C只受到脚的作有力 D 没有受到任何力的作用3.一辆汽车分别以6米/秒和4米/秒的速度运动时，它的惯性大小：（）A.一样大；B.速度为4米/秒时大；C.速度为6米/秒时大；D.无法比较4.站在匀速行驶的汽车里的乘客受到几个力的作用( )A.1个B.2 个C.3个D.4个5．甲、乙两个同学沿相反的方向拉测力计，各用力200牛.则测力计的示数为( ）A、100牛B、200牛C、0牛D、400牛6.一物体受到两个力的作用,这两个力三要素完全相同,那么这两个力( )A 一定是平衡力B 一定不是平衡力C 可能是平衡力D 无法判断7.体育课上，小明匀速爬杆小刚匀速爬绳。
有关他们受到的摩擦力下面说法正确的是（）A、因为爬杆时手握杆的压力大，所以小明受到的摩擦力一定大B、因为绳子粗糙，所以小刚受到的摩擦力一定大C、小明和小刚受到的摩擦力一定相等D、若小明的体重大，则他受到的摩擦力一定大8.如图所示，物体A在水平力F的作用下，静止在竖直墙壁上．当水平力减小为F／2时，物体A恰好沿竖直墙壁匀速下滑．此时物体A所受摩擦力的大小（）A．减小为原来的1／2 B．和原来一样 C．增大为原来的2倍 D．无法判断9．蹦极游戏是将一根有弹性的绳子一端系在身上，另一端固定在高处，从高处跳下，a是弹性绳自然下垂的位置，C点是游戏者所到达的最低点，游戏者从离开跳台到最低点的过程中，物体速度是如何变化的?_______________10.A、B两物体叠放在水平桌面上，在如图所示的三种情况下：①甲图中两物体均处于静止状态；②乙图中水平恒力F作用在B物体上，使A、B一起以2m/s的速度做匀速直线运动；③丙图中水平恒力F作用在B物体上，使A、B一起以20m/s的速度做匀速直线运动。
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中考经典错题集一、选择题1、A 、B 是数轴上原点两旁的点，则它们表示的两个有理数是（ ）A 、互为相反数B 、绝对值相等C 、是符号不同的数D 、都是负数2、有理数a 、b 在数轴上的位置如图所示，则化简|a-b|-|a+b|的结果是（ ）A 、2aB 、2bC 、2a-2bD 、2a+b3、轮船顺流航行时m 千米/小时，逆流航行时(m-6)千米/小时，则水流速度（ ）A 、2千米/小时B 、3千米/小时C 、6千米/小时D 、不能确定4、方程2x+3y=20的正整数解有（ ）A 、1个B 、3个C 、4个D 、无数个5、下列说法错误的是（ ）A 、两点确定一条直线B 、线段是直线的一部分C 、一条直线不是平角D 、把线段向两边延长即是直线6、函数y=(m 2-1)x 2-(3m-1)x+2的图象与x 轴的交点情况是 ( ) A 、当m ≠3时，有一个交点 B 、1±≠m 时，有两个交点 C 、当1±=m 时，有一个交点 D 、不论m 为何值，均无交点7、如果两圆的半径分别为R 和r （R>r ），圆心距为d ，且(d-r)2=R 2，则两圆的位置关系是（ ） A 、内切B 、外切C 、内切或外切D 、不能确定8、在数轴上表示有理数a 、b 、c 的小点分别是A 、B 、C 且b<a<c ，则下列图形正确的是（ ）9、有理数中，绝对值最小的数是（ ）A 、-1B 、1C 、0D 、不存在10、21的倒数的相反数是（ ） A 、-2 B 、2C 、-21D 、21OabA B C C B A C A B B A C11、若|x|=x ，则-x 一定是（ ） A 、正数B 、非负数C 、负数D 、非正数12、两个有理数的和除以这两个有理数的积，其商为0，则这两个有理数为（ ） A 、互为相反数B 、互为倒数C 、互为相反数且不为0D 、有一个为013、长方形的周长为x ，宽为2，则这个长方形的面积为（ ） A 、2xB 、2(x-2)C 、x-4D 、2·(x-2)/214、“比x 的相反数大3的数”可表示为（ ） A 、-x-3B 、-(x+3)C 、3-xD 、x+315、如果0<a<1，那么下列说法正确的是（ ） A 、a 2比a 大B 、a 2比a 小C 、a 2与a 相等D 、a 2与a 的大小不能确定16、数轴上，A 点表示-1，现在A 开始移动，先向左移动3个单位，再向右移动9个单位，又向左移动5个单位，这时，A 点表示的数是（ ） A 、-1B 、0C 、1D 、817、线段AB=4cm ，延长AB 到C ，使BC=AB 再延长BA 到D ，使AD=AB ，则线段CD 的长为（ ） A 、12cm B 、10cm C 、8cm D 、4cm18、21-的相反数是（ ）A 、21+ B 、12- C 、21-- D 、12+-19、方程x(x-1)(x-2)=x 的根是（ ） A 、x 1=1, x 2=2B 、x 1=0, x 2=1, x 3=2C 、x 1=253+, x 2=253-D 、x 1=0，x 2=353+, x 3=253-20、解方程04)1(5)1(322=-+++x x xx 时，若设yx x =+1，则原方程可化为（ ）A 、3y 2+5y-4=0B 、3y 2+5y-10=0C 、3y 2+5y-2=0D 、3y 2+5y+2=021、方程x 2+1=2|x|有（ ） A 、两个相等的实数根 B 、两个不相等的实数根 C 、三个不相等的实数根 D 、没有实数根22、一次函数y=2(x-4)在y 轴上的截距为（ ） A 、-4B 、4C 、-8D 、823、解关于x 的不等式⎩⎨⎧-<>ax ax ，正确的结论是（ ）A 、无解B 、解为全体实数C 、当a>0时无解D 、当a<0时无解 24、反比例函数xy 2=，当x ≤3时，y 的取值范围是（ ）A 、y ≤32B 、y ≥32C 、y ≥32或y<0D 、0<y ≤3225、0.4的算术平方根是（ ） A 、0.2B 、±0.2C 、510 D 、±51026、李明骑车上学，一开始以某一速度行驶，途中车子发生故障，只好停车修理，车修好后，因怕耽误时间，于时就加快了车速，在下列给出的四个函数示意图象，符合以上情况的是（ ）27、若一数组x 1, x 2, x 3, …, x n 的平均数为x ，方差为s 2，则另一数组kx 1, kx 2, kx 3, …, kx n 的平均数与方差分别是（ ） A 、k x , k 2s 2 B 、x , s 2C 、k x , ks 2D 、k 2x , ks 228、若关于x 的方程21=+-ax x 有解，则a 的取值范围是（ ）A 、a ≠1B 、a ≠-1C 、a ≠2D 、a ≠±129、下列图形中既是中心对称图形，又是轴对称图形的是（ ） A 、线段 B 、正三角形 C 、平行四边形 D 、等腰梯形30、已知dc b a =，下列各式中不成立的是（ ）A 、dc ba d cb a ++=-- B 、d b ca d c33++= C 、bd a c b a 23++= D 、ad=bc31、一个三角形的三个内角不相等，则它的最小角不大于（ ） A 、300B 、450C 、550D 、60032、已知三角形内的一个点到它的三边距离相等，那么这个点是（ ） A 、三角形的外心 B 、三角形的重心C 、三角形的内心D 、三角形的垂心OOOO33、下列三角形中是直角三角形的个数有（ ） ①三边长分别为3:1:2的三角形 ②三边长之比为1:2:3的三角形③三个内角的度数之比为3:4:5的三角形 ④一边上的中线等于该边一半的三角形 A 、1个B 、2个C 、3个D 、4个34、如图，设AB=1，S △OAB =43cm 2，则弧AB 长为（ ）A 、3πcmB 、32πcmC 、6πcmD 、2πcm35、平行四边形的一边长为5cm ，则它的两条对角线长可以是（ ） A 、4cm, 6cmB 、4cm, 3cmC 、2cm, 12cmD 、4cm, 8cm36、如图，△ABC 与△BDE 都是正三角形，且AB<BD ，若△ABC 不动，将△BDE 绕B 点旋转，则在旋转过程中，AE 与CD 的大小关系是（ ） A 、AE=CDB 、AE>CDC 、AE>CDD 、无法确定37、顺次连结四边形各边中点得到一个菱形，则原四边形必是（ ） A 、矩形B 、梯形C 、两条对角线互相垂直的四边形D 、两条对角线相等的四边形38、在圆O 中，弧AB=2CD ，那么弦AB 和弦CD 的关系是（ ） A 、AB=2CDB 、AB>2CDC 、AB<2CDD 、AB 与CD 不可能相等39、在等边三角形ABC 外有一点D ，满足AD=AC ，则∠BDC 的度数为（ ） A 、300B 、600C 、1500D 、300或150040、△ABC 的三边a 、b 、c 满足a ≤b ≤c ，△ABC 的周长为18，则（ ）A 、a ≤6B 、b<6C 、c>6D 、a 、b 、c 中有一个等于641、如图，在△ABC 中，∠ACB=Rt ∠，AC=1，BC=2，则下列说法正确的是（ ）A 、∠B=300B 、斜边上的中线长为1C 、斜边上的高线长为552D 、该三角形外接圆的半径为1OBAABD CEABCDE42、如图，把直角三角形纸片沿过顶点B 的直线BE （BE 交CA 于E ）折叠，直角顶点C 落在斜边AB 上，如果折叠后得到等腰三角形EBA ，那么下列结论中（1）∠A=300 （2）点C 与AB 的中点重合 （3）点E 到AB 的距离等于CE 的长，正确的个数是（） A 、0B 、1C 、2D 、343、不等式6322+>+x x 的解是（ ）A 、x>2B 、x>-2C 、x<2D 、x<-244、已知一元二次方程(m-1)x 2-4mx+4m-2=0有实数根，则m 的取值范围是（ ） A 、m ≤1B 、m ≤1且m ≠1C 、m ≥1D 、-1<m ≤145、函数y=kx+b(b>0)和y=xk -(k ≠0)，在同一坐标系中的图象可能是（ ）46、在一次函数y=2x-1的图象上，到两坐标轴距离相等的点有（ ） A 、1个B 、2个C 、3个D 、无数个47、若点（-2，y 1）、（-1，y 2）、（1，y 3）在反比例函数xy 1=的图像上，则下列结论中正确的是（ ） A 、y 1>y 2>y 3B 、y 1<y 2<y 3C 、y 2>y 1>y 3D 、y 3>y 1>y 248、下列根式是最简二次根式的是（ ） A 、a8 B 、22b a + C 、x1.0 D 、5a49、下列计算哪个是正确的（ ） A 、523=+ B 、5252=+C 、b a b a +=+22D 、212221221+=-50、把aa 1--（a 不限定为正数）化简，结果为（ ）A 、aB 、a- C 、-aD 、-a-EABC51、若a+|a|=0，则22)2(a a +-等于（ ）A 、2-2aB 、2a-2C 、-2D 、252、已知02112=-+-x x ，则122+-x x 的值（）A 、1B 、±21C 、21D 、-2153、设a 、b 是方程x 2-12x+9=0的两个根，则ba +等于（ ） A 、18B 、6C 、23D 、±2354、下列命题中，正确的个数是（ ）①等边三角形都相似 ②直角三角形都相似 ③等腰三角形都相似④锐角三角形都相似 ⑤等腰三角形都全等 ⑥有一个角相等的等腰三角形相似⑦有一个钝角相等的两个等腰三角形相似 ⑧全等三角形相似 A 、2个 B 、3个C 、4个D 、5个二、填空题1、如果一个数的绝对值等于它的相反数，那么这个数一定是_________。
2、a 是有理数，且a 的平方等于a 的立方，则a 是_________。
3、已知有理数a 、b 满足(a+2)2+|2b-6|=0，则a-b=_________。
4、已知a-b=1, b+c=2, 则2a+2c+1=_________。
5、当x_________时，|3-x|=x-3。
6、从3点到3点30分，分针转了_________度，时针转了_________度。