错题集1
错题集一(刘金娥2014.9.16-9.18)1
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错 题 集 一编写 :刘金娥时间:2014 . 9 .16-9.181.环己烷可制备1,4-环己二醇,下列七步有关反应(其中无机产物都已经略去)中,其中有两步属于取代反应,两步属于消去反应,三步属于加成反应,试回答:(1)反应 和 (填写序号)属于取代反应。
(2)写出下列化合物的结构简式:B :C :(3)反应④所用的试剂和条件分别为: , ; (4)写出①、④的化学方程式:①: ; ④: 。
【答案】:(1)①、⑥ (2)B : C :(3)NaOH 醇溶液,加热;(4)①:;④:2、下图为苯和溴的取代反应的改进实验装置图。
其中A 为具支试管改制成的反应容器,在其下端开了一小孔,塞好石棉绒,再加人铁屑少量。
填写下列空白:(1)向反应容器A 中逐滴加入溴和苯的混合液,几秒钟内就发生反应。
写出试管A 中所发生反应的化学方程式(有机物写结构简式)_____________________________________; (2)试管C 中苯的作用为________________________________________;(3)反应2至3min 后,在盛NaOH 溶液的B 中可观察到的现象为_________________________; (4)在上述整套装置中,具有防倒吸作用的仪器有____________________(填字母); (5)改进后的实验有a 、步骤简单,操作方便,成功率高;b 、药品用量少;c 、各步现象明显;d 、对产品便于观察这4个优点,还有—个优点为_______________________________; (6)能说明苯与溴发生的是取代反应而不是加成反应的现象为_________________________。
NaOH 溶液苯AgNO 3溶液 石蕊试液【答案】(1)(2)除去HBr中混有的Br2;(3)溶液底部有无色油滴(4)DEF;(5)整套装置在密闭系统中进行,不会造成环境污染;(6)D中石蕊变红或E中产生淡黄色沉淀3.下列各组物质中,全部属于纯净物的是()A.福尔马林、白酒、醋B.丙三醇、氯仿、乙醇钠C.苯、汽油、无水酒精D.甘油、冰醋酸、煤[参考答案]B4.下列各组物质中,属于同系物的是()A.硬脂酸、软脂酸B.CH3COOH、C3H6O2C.D.HCHO、CH3COOH[参考答案]A35 )A.乙醛、乙酸B.甲酸乙酯、丙酸C.CH3CH2CHO、D.CH3CH2CH2OH、CH3OCH2CH3[参考答案]A6.乙醇分子中各化学键如图所示,对乙醇在各种反应中应断裂的键说明不正确的是()A.和金属钠作用时,键①断裂B.和浓硫酸共热至170℃时,键②和⑤断裂C.和乙酸、浓硫酸共热时,键②断裂D.在铜催化下和氧气反应时,键①和③断裂[参考答案]C7.下列说法中,正确的是()A.含有羟基的化合物一定属于醇类B.代表醇类的官能团是与非苯环上的碳相连的羟基C.酚类和醇类具有相同的官能团,因而具有相同的化学性质D.分子内有苯环和羟基的化合物一定是酚类。
有理数错题集(1)
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A.4
B. 3
C .2
D. 1
D
[分析]
先把各数根据绝对值的性质求出,再根据负数的定义进行判断,即可得出答案.
[解答]
解:|-21-1
1 2
|=22
1 2
,-(
2 3
)=-
2 3
,+|-5|=5,
2 则负数有-( 3 ),有1个负数;
故选D. [点评]
此题考查了正数和负数、绝对值,解题的关键是根据绝对值的性质求出各数,再
第10题:
|-2|的相反数为( )
A.-2
B. 2
C
.
1 2
பைடு நூலகம்
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错题导出
D. -
1 2
A [分析]
利用相反数,绝对值的概念及性质进行解题即可. [解答] 解:∵|-2|=2, ∴|-2|的相反数为:-2. 故选A. [点评]
此题主要考查了相反数,绝对值的概念及性质.相反数的定义:只有符号不同的 两个数互为相反数,0的相反数是0;求出|-2|=2,再利用相反数定义是解决问题的
关键.
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根据负数的定义进行求解.
第8题:
在, ,
,
)。 A.1个 B. 2个 C .3个 D. 4个
,, ,
, 中,正整数的个数是(
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错题导出
C [解析] 本题主要考查有理数的基本概念和绝对值的概念。
正整数是指除 以外的自然数。因此题干中 不是正整数;
错题导出
第1题:
若m是有理数,则|m|+m的值( ) A.不可能是正数 B. 一定是正数 C .不可能是负数 D. 可能是正数,也可能是负数 C [分析] 根据绝对值的性质:正数的绝对值是它本身、负数的绝对值是它的相反数、0的绝 对值是0,可根据m是正数、负数和0三种情况讨论. [解答] 解:①当m>0时,原式=m+m=2m>0; ②当m=0时,原式=0+0=0; ③当m<0时,原式=-m+m=0. ∴|m|+m的值大于等于0, 即为非负数, 故选:C . [点评] 本题主要考查绝对值的性质,能够通过讨论去掉绝对值符号是解决本题的关键, 难度不大.
人教二年级数学下册王朝霞错题集(1)
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⼈教⼆年级数学下册王朝霞错题集(1)王朝霞错题集⼀、填空题。
1. 40÷8=(),⽤的⼝诀是(),表⽰把()平均分成()份,每份是(),还表⽰40⾥⾯有()个()。
2. 58÷7=□……□□÷7=6……5 36÷□=□ (4)25÷□=4……□3. 有下⾯的五个数: 4050 4005 4500 5040 5400⑴这五个数中只读⼀个0的数是()⑵这五个数中⼀个0也不读的数是()4.在()⾥填上合适的数。
10千克-8千克=()克5. 把43+29=72,72÷8=9合并成⼀个综合算式是()。
6. 1瓶⽔可以倒6杯,有28个客⼈,每⼈1杯⽔,⾄少需要()瓶⽔。
7. 由6个千、4个百和90个⼀组成的数⼗();2500⾥⾯有()个百。
8. 与1000相邻的两个数是()和()。
9. 6⽉份有30天,,相当于()个星期,余()天。
10. 把12+13=25和56-25=31合成⼀个算式是()。
11. 在有余数的除法算式□÷8=5……□中,被除数最⼤是(),被除数最⼩是()12. 在右边的⽅格中,每⾏,每列都有5~8这四个数,并且每个数在每⾏,每列都只出现⼀次,A应该是(),B应该是(),C应该是()。
13. △÷○=7……8,当○最⼩时,△=()14. 7个碗12根筷⼦,可以给()位客⼈。
15. 3800⾥⾯有()个百,29个百是()16. 1942⾥⾯有()个千,()个百,()个⼗和()个⼀。
17. 在1602, 1089, 1006, 1390, 1500这⼏个数中,只读⼀个零的有()个,⼀个零不读的有()个,把这⼏个数按照从⼤到⼩得顺序排列起来是()>()>()>()>()18.在□⾥最⼤能填⼏?9□4>980158>1□69×□<3042>6×□19. 5500克=()千克()克3543克=()千克()克⽐48千克多9千克是()千克,25千克⽐81千克少()千克20. ⽤0、7、4、8组成最⼤四位数是(),它接近的整千数是();组成的最⼩四位数是(),它接近的整千数是()21. 三班的同学排队坐缆车,每辆缆车坐4⼈,笑笑排在第16位,她应该坐第()辆缆车,淘⽓排在34位,他应该坐第()辆缆车。
初一错题集1
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初一错题集 Unit1-41.They have some rulers in their bags.(同义句)2.Are you ?Yes, we are brothers.(twin)3.You (not be) friendly to your classmates.4.What does your father often to you? He often tells me not to inclass.A.s ay talkB.talk sayC.say sayD.talk talk5.My father with me (fly) a kite every Saturday.6.It takes about ten minutes to walk to the museum.(对划线部分提问)to walk to the museum.7.Our school is near the zoo.(同义句)Our school is the room.8.Please take your books after school.A.t o homeB.your homeC.homeD.at home9.Lily’s watches sports news at night.A.twins brother;much tooB.twin brothers;too muchC.twin brother;too muchD.twins brothers;too many10.I usually sit the classroom,so that I can hear the teacher who likes to standthe class clearly.A.i n front of;in the front ofB.in the front of;in front ofC.in front of;in front ofD.in the front of;in the front of10.I hope you and your family .A.w ellB.are well lC.fineD.are good11.Yao Ming, (like)his parents, (like)playing basketball very much.12.The supermarket (close)at 9p.m..It is (open)between 9a.m.and 9p.m..So it is (close)from 9p.m. to 9a.m..13.(read) English every day. (read)can help you improve( 提高)yourEnglish.(read)14.Would you (go) to the zoo tomorrow.15.Do you often do your homework after (have)dinner.16.My favourite fruit (be)apples.17.There are different kinds of kites (fly)in the sky.18.If a girl doesn’t know wear,she can ask her best friend for help.A.what toB.how toC.what canD.how can19.What’s your family like? .A.They are kind.B.It’s a happy one.C.They are tall.D.They like sports.20.He is never late for school? ,he is always the first to get to s chool.A.Yes,he does.B.No,he isn’t.C.Yes,he is.D.No,he doesn’t.21.The books are one of my (hero).Jerry Lin Shuhao is one of jimmy’s(hero).He plays basketball well.22.Look!Each girl in our class (have)a new shirt now.23.(chat)with each other online is fun.24.He is one of the (good)students in our class.25.She does (well)in swimming of us three.26.does Andy’s father look? He looks strong and tall.A.HowB.WhenC.WhereD.What27.Mary;s daughter looks good the dress.A.w ithB.inC.onD.at28.I go to school on weekdays.(同义句)29.What do you get (介词)your birthday?30.Good morning (介词)you.31.What about (wake) (he)up?He has much homework(do).32.We have fun (chat)with each other at lunch.33.Would you please (not shout)in the library, it’s not polite.34.Look,the window is (open)now,please close it.37.Mum (get)ready for supper,while I (write)my home.38.I hope you our home one day,Daniel.A.to visitB.visitC.will visitD.are visiting39.41.Here for you.A.are some good newsB.is some good newsC.are some piece of good newsD.is some pieces of good news.42.There are many flowers on sides of the street.A.eachB.everyC.bothD.all43.Let’s(be) at home together this afternoon.44.There are some pictures the wall and some windows the wall,too.A.on onB.on inC.in onD.in in45.Jill, (not be)late for the meeting.46.Is the girl a dress your classmate?A.toB.onC.inD.with47.48.are good friends.A.I you and DickB.Dick you and IC.You I and DickD.You Dick and I49.Look at today’s newspaper.Some news really interesting.A.doesB.isC.areD.do50.We should “thank you” when someone lends something to us.A.tellB.speakC.sayD.talk51.She has a sister,and he has ,too.A.the oneB.onesC.oneD.her52.One of the students often her with her English in the class.A.helpB.to helpC.helpingD.helps53.I that I can send my best to Kitty on New Year`s Day.Wonderful! I believe your dream on that day .A.hope, wish, comes trueB. hope, wishes, comes trueC. wish , wishes, comes trueD. wish, hopes , come true.54.Excuse me , could you English in class?Yes, of course. I am very good at English stories.A.Say, talkingB. tell, sayingC. Speak, tellingD. Tell, speaking55.Who sports in your family? My brother and I .A.Likes, isB.like, amC. Like, areD. Likes, do56.I live far away from the school and I often a bus to school. What about you?I go to school , it takes me about ten minutes.A.by, on bikeB. take, by bikeC. by, ride a bikeD. take, ride a bike.57.We have a (parent) meeting once a month.58.Today is Teacher`s Day, best to you ,Miss Wang.59.The students go out for a trip twice a week. (对划线部分提问)do the students go out for a trip?lie does after-school activities in the afternoon. (否定句)Millie61.I can`t hear you after-school activities in the afternoon.(good) on the phone.62.Where your family (have) breakfast on Sundays.63.I have daughter.A.A eight-year-oldB. eight years oldC. An eight-year-oldD. Eight-years-old64.They come from . They are (英国)65.He with his family in Nanjing now. (live)66.He often others, and he is (help)67.How many are there in your school? (年级)68.Look, the window is (open) now, please close it.69.There is no salt in the kitchen. Would you like t o get ?A.itB. oneC. someD. any70.Don`t make Kitty that. She is tired. (do)71.72.She every day.A.Walk homeB. Walk to homeC. Walks homeD. Walks to home73.What (其他的) do you want to drink?74.One of the boys (play) football now.75.the girls like badminton? (like)76.American people usually rice.(eat)77.78.It is fun (read) an (interest) book.79.We have fun (travel) all over the world.80.The parents` meeting begins two o`clock the afternoon November 15th.A.at , in , ofB. At, on , on ,C. At, on , ofD. In , in , on。
三年级下册数学错题集一
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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()。
初一英语错题集
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初一英语错题集错题集〔一〕 22/12/20221. The final test is difficult . Only few students have passed the exam, they?A. haven’tB.haveC.didn ’t2.Take it easy. The police here. Everyone OK.A.is ing, will beB.are ing, will beC.es. is3. —I felt really sorry for Liu Xiang when I watched him down in the match. -- A.falling, So I didB.fall, So did IC.falling, So did I4.My mother dressed us the same cloyhes.A.inB.onC.with5.Now I am growing old and I feel very different my twin pother.A. inB.fromC.with6.Several years and David became a strong young man.A.passedB.pastC.goes by7.Suddently he was awakened and heard his uncle to his outside.A.shoutB.shoutingC.shouted8.Mr.Shut became angry and shouted , ‘Why you e out yet?’A.don ’tB.didn ’tC.haven ’t9.Don ’t you think we really need a dictionary ?A.to look the word upB.to look the word up inC.to look the word up with10.If you want to study English well,please every morning.It helps .A.read aloud, a lot ofB.read loudly, a lotC.read aloud, a lot11.My mom never give me pocket money , so I have to make money some other ways.A.inB.withC.by12.On holidays,give your customers coupons(优惠券) they will keep ing back to you for your service or products.A.as soon asB.so thatC.now that13.Premier Zhou for many years,but he still lives in the hearts of Chinese people.A.has diedB.has been diedC.has been deadA.Either,usingB.Neither, to useC.Both,use15.Children and adults always don’t know how to deal with or treat someone a disability.A.inB.forC.with16.I was that I would be late for school.A.afraidB.sureC.sorry17.Teenagers can’t drive on busy streets .A.without being allowedB.without permitC.without being allowed to18.You must tell your daughter it is in this mysterious place you met your husband.A.that, whereB.that,thatC./, where19.He told me he fished for a living to his daughter.catedB.supportC.offer20.What a mess! Your table different things. Why not clean your table?A .cover with B.is covered with C.is covered21.In America,teenagers can’t beer by law.A .offer to B.be offered C.be offered to22.I never saw her angry ,never saw her .A .cry B.smiling C.crying23.I cleaned the desk carefully and found some papers -- a photo of my father and a one-page letter.A .inside B.indoors C.outside24.Something . The house is filled with strangeA .smells badly,smell B.is smelt badly,smellsC.smells bad,smells25.It ’s to get a C than to fail in the exam. So take it easy. Try harder next time.A .a less problem B.less a problem C.less of a problem26.People read the result of the medical research by Dr. Smith and learned a lot from it.A.to doB.doingC.done27.Audi as a car pany is very famous in the world. It is famous its popular cars and special designs.A .as B.for C.with28.Now it that a two-wheel bike of 2022 will einto our life.A .is said B.was said C.says29.The e-bike doesn’t use any stratighly.A .electric B.electrical C.electricityA.evenB.althoughC.even though31.Dolphins use different sounds to information with each other.A.exchangeB.changeC.discuss32.The groups really cool clothes. But that’s not really important me.A.put on,toB.wear, forC.are wearing, to33.I listen a CD Heart Stering.A.of, calledB.to,with the name ofC.to, calling34.--Must I finish the wor k before five O’clock.--No. You finish it eight.A.musn ’t, atB.needn ’tC.can,by35.I repeat the story by teacher just now.A.was letB.is letC.was let to36.Thanks to the project and the kindness of his family and neighbours, he was able to recive anoperation just to prevent the illness from getting worse.A. in timeB.on timeC.at the same time37.--It ’s kind you to e to see me.--It ’s my pleasure. You were so kind me.A.of, withB.for, withC.of, to C.for,to38.You may go fishing if you work A.is done B.will be done C.has done39.He still remembers the days he spent with your family.A.whenB.whereC.thatD.on which40.Mr. White car had been stolen, came to the policeman.A.whoB.thatC.whoseD.which41. you didn’t get good grades, you’d better study harder.A.Now thatB.WhenC.Although42.There used to an old temple in this village, there?A.have, didn’tB.be, usedn’tC.be,did43.Only the help of the teachers and parents deal with problems easily.A.with, we canB.for,can weC.with,can weof them has a chance to another town.A.Both, to moveB.Everyone, to moveC.Every one,of moving错题集〔一〕 2022年12月22日 1.2. 3.4. B B B watch sb do sth表示看见某人做某事,也指看某人某物的总过程;而doing 表示看见正在做A 首先,dress 是及物动词,意为“为... 穿衣”,用法是dress sb,如:The babysitter dresses the baby everyday.保姆每天都要给宝宝穿衣。
英语五年级错题集(一)
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1. Look at the boys! What()they()there?A. are; doB. do; doesC. are; doing2. Please send me an email ()**************************.A. inB. toC. at3. — What's Tom like?—().A. He's cleverB. He's a studentC. He's good at sports4. — When is the summer vacation?— It's in ()and ().A. April; MayB. July; AugustC. May; June5. Miss Li is my ()Chinese teacher.A. oneB. firstC. the first6. 阅读短文,判断句子正(T)误(F)Traffic lights are the same in every country. There are three lights—red, yellow, and green. Red means “stop”. Yellow means “wait”, and green means “go”. In China, people drive on the right side of the road. But in Britain, Japan and Australia, people drive on the left side of the road.(1). ( )The traffic lights are the same in every country.A. TB. F(2). ()Yellow means “wait”.1A. TB. F(3). ()In China, people drive on the left side of the road.A. TB. F(4). ()In Australia, people drive on the left side of the road.A. TB. F(5). ()Red means “go”.A. TB. F7. Many people like collecting(收集) things. For example, they like collecting stamps, books, pictures. But my friend Mr. King likes collecting clocks. He has five hundred clocks now. There are clocks everywhere in his house. You can see shelves standing in every room. All the shelves are full of clocks. Though Mr. King is glad to do this, his wife doesn't enjoy it at all. She has a lot of work to do every day. It's not easy for her to clean hundreds of clocks. She is also angry at the noise. Each clock keeps its own(自己的) time, so she can hear clock strike(敲) almost any time during the day and night. "There's something even worse. I'm never able to know what time it is with so many clocks around!"(1).Mr. King is.A.a clockB.a clock sellerC.interested(感兴趣的) in clocksD.good at repairing clocks(2).Which of the following sentences is right?A.Mr. King keeps the clocks only in his bedroom.2B.His wife likes collecting clocks, too.C.There're some shelves with nothing on them. D.All the shelves are full of clocks.(3).Mrs. King .A.is busy cleaning the clocks every dayB.likes collecting clocks, tooC.helps Mr. King collect clocksD.likes cleaning the clocks(4).Mrs. King doesn't know .A.her husband's favourite thingB.which clock tells the right timeC.when the clocks strikeD.how to clean the clocks(5).From the passage(段) we know .A.few of the clocks keep the right timeB.most of the clocks keep the right timeC.all the clocks strike at the same timeD.3it's always quiet in their house8. FriendsOne day, Mike and Jack are walking in the forest. "We are good friends. If (要是) we meet a bear, I will help you." Mike says. "I'll help you, too." Jack says. Later, there is a big bear in front of them. Mike and Jack run very quickly. Then Jack climbs up a tree and forget (忘记) all about his friend. Mike is too fat and he lies down (躺) on the ground and closes his eyes. "The bear will think I'm dead (死的)." The bear comes up to Mike and looks at him, puts his nose to Mike's ears. The bear thinks Mike is dead, so it goes away.Jack comes down from the tree with a smile (微笑), and he asks his friend. "What does the bear say to you?" "The bear says, 'A friend in need is a friend indeed.'"(1).Mike and Jack are walking .A.in a mountainB.in the forestC.on a farmD.by a river(2).They meet a in the forest.A.dearB.big tigerC.big bearD.reptile(3).climbs up a tree quickly.A.4JackB.MikeC.The bearD.Jack and Mike(4)."A friend in need is a friend indeed" means (意思是) in Chinese.A.莫逆之交B.患难见真情C.情同手足D.肝胆相照(5).Which is NOT RIGHT (不对)?A.Jack climbs up the tree and Mike lies down on the ground.B.The bear can't climb the tree.C.The bear says to Mike, "A friend in need is a friend indeed."D.They are walking in the forest.9. 阅读短文,选择正确答案。
高二错题集一
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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 .。
六年级错题集(小作者整理)
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错题集错题集1、 一根绳子3折量一口井,佘出1/3米;如果4折去量又不足1/4,求绳长,井深各多少米?,求绳长,井深各多少米?2、 小冬的爷爷参加运动会登山比赛,小冬的爷爷参加运动会登山比赛,上山时平均每分钟走上山时平均每分钟走30米,15分钟到山顶,分钟到山顶,然后用然后用20分钟沿原路下山,问上山、下山平均每分钟走多少米?路下山,问上山、下山平均每分钟走多少米?3、 一袋大米已吃了的和剩下的比是5:3,已经吃了这袋大米的,已经吃了这袋大米的 ( )) 剩下的比吃了的少(剩下的比吃了的少( )%。
( )4、 有一个圆柱形水池,用一根长5米的竹竿竖直地插入水池中,在竹竿与水面的交接处标上记号A ,然后将竹竿倒过来,依照上述方法,再做记号B ,记号A 和B 之间的距离是竹竿长度的1/5,那么水池中水深多少米?水池中水深多少米?5、有两个完全相同的长方体恰好拼成一个正方体,有两个完全相同的长方体恰好拼成一个正方体,正方体的表面和是正方体的表面和是30平方厘米。
如果把这两个长方体改拼成一个大长方体,那么大长方体的表面积是(体改拼成一个大长方体,那么大长方体的表面积是( )平方厘米)平方厘米6、有一花坛,高0。
5米,底面是边长2.4米的正方形。
四周用砖砌成,厚度是0。
2米,中间填满土。
(1)花坛所占的空间有多大?(2)花坛里大约有多少立方米土?)花坛里大约有多少立方米土?7、小明看一本科普书,已看了全书的3/8,比余下的少36页,这本书一共多少页?页,这本书一共多少页?8、食堂有3吨大米,如果每天吃去1/14,( )天可以吃完。
)天可以吃完。
9、水结成冰后体积增加了1/9,冰融化成水后,体积减少(,冰融化成水后,体积减少( )10、体积是1立方米的正方体,可以截成(立方米的正方体,可以截成( )个棱长是1分米的正方体,这些正方体排成一行,成为一个长方体,这个长方体的长是(为一个长方体,这个长方体的长是( )11、一个长方体长16厘米,如果把它的长增加2厘米,那么表面积就增加30平方厘米。
英语初一错题集 (1)
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英语纠错1、I have P.E ()the aftertoon of Tuesday.A in b. for c.on d.at2、----happy new year !------------( )a.I knowb.The same to youc.I am fined.Thank you3、It is ( )to play football.a.funsb. a func.fund.funny4、I have breakfast ( ) 6:30 every morning.A.at around b. around at c.in around d. around in5、WHEN ( )he ( )(have) P.E.6、The girls like music because it is exciting 对划线部分问7、We have six ( )课in a day.8、It has about four ( ) students.a.hundredb.hundred ofc. hundredsd.a hundred9、Mr.mang is strict ( ) his work. He is strict ( ) his studentsa.in ;in b with; in c in; with d with;with10|、()interesting movie it is! All of us want to see it again.a.Whatb. how anc.how dwhat an11、The last day of a week is ( ).a.Fridayb. Saturdayc. Sunday d Weekend12、( ) favorite subject is history.a. heb.himc.his friendd.his friden’s13、He goes to bed at about ten. 提问14、I am sun his favorite fruit is apples. 变一般疑问句。
护士资格考试全真模拟错题集1
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护士资格考试全真模拟错题集11.患儿,男,2岁。
因惊厥抽搐入院,护士询问病史时应着重询问()A.发作持续时间B.是否伴有意识丧失C.四肢肌张力情况D.既往发作史E.体温答案:D小儿惊厥发作的原因有很多,有感染和非感染因素。
护士通过询问既往发作的情况,可大致了解发作的原因。
2.使用电动吸引器吸痰时,储液瓶内的吸出液应及时倾倒,不应超过瓶的()A.3/4B.2/3C.1/2D.1/4E.1/5答案:B储液瓶内的吸出液应及时倾倒,一般不超过瓶的2/3,以免痰液吸入损坏机器。
3.针对甲亢的患者,下列哪项饮食不妥()A.高碘饮食B.高热量饮食C.高蛋白饮食D.低纤维素饮食E.高维生素饮食答案:A碘是合成甲状腺激素的重要原料。
甲亢患者高代谢和系统兴奋,肠蠕动加强,大便次数增多,高纤维素饮食会造成腹泻。
4.患儿,女,三个月。
近两日出现腹泻,为黄绿色稀便,内有奶瓣和泡沫,量不多。
为防止患儿发生脱水症状,应选择()A.禁食B.静脉补充林格液C.少量多次饮温水D.少量多次喂服ORS(口服补液盐)E.静脉补充0.9%氯化钠注射液答案:D5.患者,男,45岁。
骤起寒战、高热40℃、大汗,肝区或伴右上腹痛并伴有厌食、乏力。
查体右季肋肝区呈饱满状态,右下胸及肝区叩击痛,怀疑细菌性肝脓肿,分析细菌侵入的主要途径为()A.肝动脉C.肝外伤后肝内血肿感染D.淋巴系统E.胆道系统答案:E胆道系统是最主要的入侵途径和最常见的病因。
入侵途径包括:胆道系统、肝动脉、门静脉、淋巴系统、肝外伤、隐匿性感染等。
6.严重肝脏疾病应该补充下列哪种营养元素()A.维生素AB.维生素KC.维生素ED.B族维生素E.维生素B12答案:B严重的肝脏疾病往往伴有凝血功能异常,导致牙龈、黏膜部位出血,维生素K可以纠正凝血功能。
7.急性阑尾炎时细菌可经下列哪个血管引起肝脓肿()A.肝静脉B.门静脉C.下腔静脉D.肾静脉E.脾静脉答案:B8.单纯性肠梗阻与狭窄性肠梗阻的主要区别是()A.梗阻的病因B.梗阻的时间C.梗阻的严重程度D.肠管壁有无血运障碍E.有无并发症答案:D9.肛门停止排气排便提示有()A.肠梗阻B.结肠癌C.肠麻痹D.肠粘连E.肠套叠答案:A10.肝硬化患者腹水多为()A.乳糜淋巴液C.渗出液D.漏出液E.脓性渗出液答案:D肝硬化腹水多为漏出液。
作业错题集(全品)
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第一章 有理数1、下列各数,3,-5,-21,0,2,0.97,-0.21,-6,9,32,85,1。
其中正数有 个,负数有 个,正分数有 个,负分数有 个。
2、下列说法错误的是( )A 负整数和负分数统称为负有理数B 正整数,负整数和0统称为整数C 正有理数和负有理数统称为有理数D 0是整数,但不是分数3、已知零件的标准直径是100mm ,超过标准直径的数量(mm )记作正数,不足标准直径的数量(mm )记作负数,检验员某次抽查了五件样品,检查结果如下:(1)试指出哪件样品的大小最符合要求?(2)如果规定误差的绝对值在0.18mm 之内是正品,误差的绝对值在0.18mm-0.22mm 之间是次品,误差的绝对值超过0.22mm 是废品,那么这五件样品分别属于哪类产品?4、下列运算:①(-18)÷(-9)=2;②(-7298)÷8=-(72+98)×81=-991 ③0.75÷(-585)=-43×458=-152 ④|-9|÷|-111|=9×11=99 其中运算正确的有( )A 1个B 2个C 3个D 4个5、计算题36÷7.2+(-48.6)÷2.4 (-1)×(-1)2×(-1)3×…×(-1)99×(-1)1006、观察下列等式:31=3,32=9,33=27,34=81,35=243,36=729,37=2187,…。
解答下列问题:3+32+33+34+…32016的末尾数字是( )7、-22÷34-[22-(1-21×31)]×12 331-22÷[(21)2-(-3+0.75)]×58、观察下列运算过程:S=1+3+32+33+…+32015+32016,①①×③,得3S=3+32+33+…+32015+32016+32017,②②-①,得2S=32017-1,S=32017-12运用上面的计算方法计算:1+5+52+53+…+520179、-392617×13 -24÷(232)2+521×(-61)-(0.5)210、若a 是整数,请比较a 2与a 的大小。
高考英语语法总复习----错题集(1)
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高考英语语法总复习----错题集〔一〕1.It was 2 hours’ wait by the time the announcement _____, saying my flight was cancelled.A. had been madeB. madeC. was madeD. was making2.She went on with her search, knocking on each door before entering the room ____ the guestwas perhaps asleep.A. in caseB. even ifC. so thatD. as though3.What made the parents worried most was that little Helen did nothing but _____ all day longand always made a lot of trouble.A. to playB. playedC. playD. playing4.Those successful deaf dancers dancing is an activity _____ sight matters more than hearing.A. whenB. whoseC. whichD. where5.Strawberries can, of course, be frozen but they taste best when bought and eaten ____.A. freshlyB. freshC. more freshlyD. fresher6.–We did not see him at the lecture yesterday.-- You ____ him, since I went to an international conference with him.A. mustn’t have seenB. needn’t have seenC. couldn’t seeD. can’t have seen7.Venus has a dense atmosphere, _____ we know very little.A. its compositionB. about whose compositionC. about which compositionD. whose composition8.______ his capability in dealing with different kinds of people, he was appointed chairman ofthe committee.A. Being consideredB. ConsideringC. To be consideredD. Having considered9.Operations which ____ patients exhausted and in need of long periods of recovery time arenow making them feel relaxed and comfortable.A. leaveB. had leftC. will leaveD. left10.With all the magazines I needed _____, I left the post office.A. boughtB. to buyC. buyingD. to be bought11.Most students in our class prefer taking pains in our studies to ____ with a better education.A. equipB. equippingC. be equippedD. being equipped12.I found that my cheating in yesterday’s English test _____ to my parents that very evening.A. was reportedB. had been reportedC. had reportedD. was reporting13.The computers made by our company sell best, but several years ago no one could haveimagined the role in the markets that they ______.A. were playingB. were to playC. had playedD. played14.After supper she would sit down by the fire, sometimes for ____ an hour, thinking of heryoung and happy days.A. as long asB. as soon asC. as much asD. as many as15.With _____ left, it doesn’t seem likely that the young girl will be able to reach the airportahead of schedule.A. so short timeB. such short a timeC. such a short timeD. so a short time16.Try to avoid such things ______will do you harm, unless you don’t care about the rumorsfrom all directions.A. thatB. asC. whichD. as that17.I glanced over my shoulder at the young woman who sat _____ me reading a newspaper.A. againstB. in front ofC. oppositeD. behind18.An old saying goes that no bread eaten by man is as sweet as _____ earned by his own labor.A. oneB. thatC. itD. such19.I’d like to take down your name and address in case you _____ as a witness.A. will be neededB. needC. are neededD. will need20.The number of the people present at the party was ____ than expected, so there was muchfood left.A. much moreB. much smallerC. much largerD. many more21.His grandfather was born and brought up in _____is now called an economic developmentzone.A. whatB. whereC. whichD. that22.If a computer breaks down, you will lose the file you ____ if you don’t save it regularly.A. are processingB. processC. will processD. processed23.Parents who stay actively ___ with their children, showing interest in their activities andparticipating when possible, earn the respect and appreciation of their children.A. involveB. involvingC. to involveD. involved24.Indeed the best leading actor has read a lot of books, but the best supporting actress has readno _____.A. moreB. fewC. lessD. little25.Although the causes of cancer _____, we do not yet have any practical way to prevent it.A. are being uncoveredB. have been uncoveringC. are uncoveringD. have uncovered26.The newly concluded National People’s Congress has passed a package of economic policies_____ 8% of yearly economic growth.A. targetB. to targetC. targetingD. targeted27.Hardly _____ aware that the lion was approaching her before her dog began to bark.A. she wasB. would sheC. would she beD. was she28.Students’ complaints ____ too much study burden were soon taken into consideration by theschool.A. ofB. forC. inD. with29.The man had expected to see all his relatives when in hospital, but ____ came to see himwhile many of his friends offered him their help.A. noneB. no oneC. someoneD. anyone30.There _____ be any difficulty in passing the oral test since you have practiced a lot in theschool.A. mustn’tB. shan’tC. shouldn’tD. needn’t31.Besides the Internet, television is anther major way of communication ____ us to see theperformer as well as to hear the voice.A. permittingB. to permitC. being permittedD. permitted32._____ two tickets for the new play at the Grand Theater on Saturday. Shall we go and enjoy ittogether?A. They have been givenB. I have been givenC. I am givenD. They have given to me33.After a long journey across the whole Europe from north to south, they found themselves ___out as well as their clothes.A. wearB. woreC. wearingD. worn34.The hostess dressed in her finest costume together with the guests ____ comfortably in theliving room.A. was seatedB. was seatingC. were seatedD. seated35.Even if you offered ____ you have just offered, I would not sell it to you.A. the money twice thatB. twice whatC. twice the money whatD. twice as much36.Investigators agreed that passengers on the airliner ____ at the very moment of the crash.A. ought to dieB. must have diedC. must be dyingD. should have died37.He introduced a lot of new devices, ____ much time and labor.A. only to saveB. thus savingC. only savingD. having saved38.Motorists used ____ to the radio or their favorite tunes on CDs may have a new way to entainthemselves, after engineers in Japan developed a musical road surface.A. to listenB. to listeningC. for listeningD. to be listening39.A walk through the rainforest is not ecotourism ____ that particular walk somehow benefitsthat environment and the people who live there.A. ifB. thoughC. unlessD. as40.Throughout the history of the Olympic Games, ordinary men and women have showedextraordinary sportsmanship, _____ it is an athlete helping to fix the bicycle of his opponent or two athletes from warring nations walking arm-in-arm before the world.A. no matterB. whetherC. provided thatD. whatever41.The study you have been making ____ the ancient Chinese characters is an instructive job.A. toB. forC. ofD. from42.Yassin’s death was not ____ to stop Hamas’ attempt _____ terror attack.A. hoped, carrying onB. expected, launchingC. hoped, to carry onD. expected, to launch43.What is the way George thought of ____ enough money to buy the house?A. to getB. gettingC. having gotD. being got44._____ waking from a dream, Silicon Valley has suddenly realized that the ____ economymeans trouble for his companies.A. Although, collapsingB. As if, collapsedC. Although, collapsedD. As if, collapsing45.The man showed us such a heavy stone ____ no man could lift.A. thatB. asC. whichD. and46.The professor can hardly find sufficient grounds ____ his argument.A. which to be based onB. on which to baseC. which to be basedD. which to base47.The women carrying babies, come in first, _____?A. will youB. will theyC. do youD. don’t you48.Pleasant music is often played ____ classes to make students refreshed and relaxed for awhile.A. betweenB. amongC. overD. after49.When you have finished reading the novel, you will find the hero ____.A. a person too perfect to be not trueB. a too perfect person to be trueC. too perfect a person to be trueD. too perfect a person to be not true50.When I entered the living room, Mother didn’t say anything, but I noticed a _____look comeover her face.A. surpriseB. surprisedC. surprisingD. surprisingly51.Having lived in the village for so long, these young men have already gone _____.A. to nativesB. nativeC. nativelyD. natives52.There is hardly an environment on earth ____ some species of animal or other has not adaptedsuccessfully.A. to whichB. whereverC. so thatD. that53.____ at the news that he sank into the chair and remained motionless for several minutesbefore regaining control of himself.A. So was John scaredB. So scared was JohnC. So much did John scareD. John scared so much54.Our neighbor ____ the street has decided to hold a garden party despite cold weather.A. acrossB. oppositeC. alongD. in55.Until the very latest moment of his existence, man has been bound to the planet ___ heoriginated and developed.A. on whichB. whatC. in whichD. in what56.They have started an investigation, ____ are being kept secret.A. the detail of whichB. of which the detailsC. and the detailD. the details of it57.I got in his old truck and off ____ to one of the far corners of the farm to fix the fences.A. did we goB. we wentC. we did goD. went we58.I was the middle child of three, and there was a gap of five years on ____ side.A. oneB. eitherC. bothD. none59.The most common way we have of showing other people ____ are more important is bymaking ourselves smaller than they are.A. whoB. /C. thatD. they60.–Shall I get you something from the supermarket?-- Oh, let me see, ____ please.A. food of a week worthB. food of a week’s worthC. a week worth foodD. a week’s worth of food61.Now that energy prices are rising so rapidly, further prices are much uncertain, and the risk____ a new investment depending on them may fail is greater.A. by whichB. ofC. thatD. in that62.Until last century _____ heard of online education.A. many Americans had neverB. had many Americans neverC. many Americans hadD. had many Americans63.Discovery in a South African cave suggests that modern human behavior ____ much earlierthan ____.A. begin, previously thoughtB. began, previously thoughtC. should begin, previously thinkingD. began, previously thinking64.____ think of their plan, no one can deny that they are bold and have much imagination.A. Whatever we mayB. No matter how we mayC. Much as we mayD. If we may65.How can a country where teachers devote all their class hours to training students to takeexams _____ to compete in the technology race with other countries?A. expectB. expectingC. being expectedD. be expected66.All women want to escape from the kitchen, ____ the limited place ___ society expects themto fill.A. which, thatB. /, whereC. where, whichD. /, /67. The old man was sitting in a wheelchair all day because his broken leg suffered after a fallmade ____ difficult.A. it walkB. to walkC. walkingD. it to walk68. The new Hukou(户口)policy, according to some experts, ____ to attract more high-end talentsto contribute to Shanghai’s development.A. servesB. servingC. to serveD. is served69. Electrolysis(电解)is the process _____ electric current is passed through a substance to cause achemical change.A. whichB. whoseC. to whichD. by which70. The Apple Company had scarcely released i-Phone ____ it became one of the best-sellingelectronic products.A. thanB. beforeC. whileD. when71. He no longer lives on campus, for he ____ an apartment within the walking distance to theschool.A. will rentB. rentedC. has rentedD. had rented72. With his good sense of direction, he _____ quickly and easily get round in the new city.A. canB. mustC. shouldD. need73. An excellent way to help memory is to connect information with pictures, which ____ as amemory-link method.A. considersB. is consideringC. is consideredD. considered74. The airline has a booklet ____ will tell you most of the important information to Europe.A. in whichB. about whichC. /D. that75. Several weeks had gone by ____ the head of the gallery realized the painting was missing.A. afterB. beforeC. sinceD. that〔一〕答案1-5 CACDB 6-10 DBBDA 11-15 CABAC 16-20 BDBCB 21-25 AADCA26-30 CDAAC 31-35 ABDAB 36-40 BBBCB 41-45 CDADB 46-50 BAACB51-55 BABAA 56-60 BBBDD 61-65 CABAD 66-70 DCADD 71-75 CACDB。
小学三年级错题集(1)(免费下载)
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1、有99块巧克力,最少拿出()块后可以平均分给7个小朋友,每人分()块。
2、括号里最大能填几?6×()<333、在括号里填上适当的数:()÷4=280÷()=()÷6=800÷()4、在方框里块上适当的数:5、小朋友们在操场上围成圈做游戏,琳琳前面有9个小朋友,琳琳的后面也有9个小朋友,一共有_______个小朋友做游戏。
6、一个数加上8,再乘8,再减去8,再除以8,结果是9,这个数是()7、要使□57÷7的商是两位数,□里可以填()A.9 B.8 C.3 D.78、被除数去掉末尾的0就与除数相等,被除数与除数相差243,除数是_______9、在除数的末尾添上一个0就与被除数相等,除数比被除数小189,被除数是_______10、到广场放风筝的成人人数是儿童的2倍,如果一共有270人,那么儿童有多少人?成人有多少人?11、班长要将22块橡皮擦和33支铅笔平均分给参加打扫教室卫生的同学,结果橡皮擦多1块,铅笔少2支,参加打扫卫生的同学有多少人?12、学校合唱队中,女生人数是男生的6倍,如果合唱队一共有49人,男生有几人?14、玩具厂生产720把水枪,每袋装6把,可以装多少袋?每箱装4袋,可以装多少箱?15、某旅馆7人房间每间105元,5人房间每间90元,这两种房间哪种便宜?三(1)班有学生45人,他们该怎样住宿最便宜,且不浪费床位?16、有100位学生排成一个方阵,要使每行每列人数一样多,每行应该排多少人?17、买3个篮球和4个足球一共458元,买4个篮球和3个足球一共368元,买1个篮球和1个足球一共多少元?18、丁丁6天看了246页书,照这样的速度,看完这本书还需要2天。
这本书一共有多少页?19、喜糖铺里新进了一批水果糖,每箱有152粒,一共有6箱。
现在要重新包装成每袋8粒,这些糖一共可以包多少袋?1、有99块巧克力,最少拿出()块后可以平均分给7个小朋友,每人分()块。
错题集1-牛客
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错题集1-⽜客⼀、下⾯哪⼀个不是JavaScript的数据类型?A.StringB.BooleanC.IntegerD.Undefined答案:C解题思路:JavaScript的数据类型分为两种:原始类型(即基本数据类型)和对象类型(即引⽤数据类型):基本类型:String、Number、Boolean、Null、Undefined、Symbol引⽤类型:Object、Array、FunctionInteger是整⾏的意思⼆、HTML5 中不再⽀持下⾯哪个元素?A.<q>B.<ins>C.<menu>D.<font>答案:D解题思路:HTML废除的元素1、能⽤css代替的元素basefont、big、center、font、s、strike、tt、u。
这些元素纯粹是为画⾯展⽰服务的,HTML5中提倡把画⾯展⽰性功能放在css中统⼀编辑。
2、不再使⽤frame框架。
frameset、frame、noframes。
HTML5中不⽀持frame框架,只⽀持iframe框架,或者⽤服务器⽅创建的由多个页⾯组成的符合页⾯的形式,删除以上这三个标签。
3、只有部分浏览器⽀持的元素applet、bgsound、blink、marquee等标签三、下⾯代码输出结果:(function(){var a=b=5;})();console.log(b);console.log(a);A. 5,5B.undefined,undefinedC.5,undefinedD.5,Uncaught ReferenceError:a is not defined答案:D解析:var声明a,a就成为的局部变量。
根据垃圾回收机制,a在函数运⾏完就被销毁,console获取不到,报错。
b没有被声明,默认为全局变量,值为5。
四、A. 1,2,3,4B.0,1,2,3C.3,3,3,3D.4,4,4,4答案:D解析:事件(例如:click,focus等)、定时器(setTimeout和setInterval),ajax都是异步!!。
二年级上册语文错题集 (1)
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二年级上册语文错题集1、写错的字:观琴棋错题原因分析:主要是因为没掌握牢和粗心出错的。
2、多音字:奔bēn(奔跑)bèn(奔向)分fēn(分辨)fèn(养分)错题原因分析:多音字第一个是因为把拼音搞反了,第二个是因为分不太会组词。
3、出错的拼音:晨(chén)樱桃(yīng)错题原因分析:分不清前后鼻音。
4、混淆的字:座(座位)——坐错题原因分析:座位的座和坐下的坐就是不太会使用。
5、选字填空:状、壮形( ) 奖( ) 强( ) ( )丽错题原因分析:分辨不清字的意思。
6、照样子,填词语:(拍)皮球()青虫()故事()钢琴()西瓜()音乐汽车()作业错题原因分析:学生不能正确使用动词。
7、错题:(无)谷(风)登春(华)秋(时)原因:学生没有根据词语意思去填写,随便填写了一个同音字。
8、错题:“区”共(5)画,第二画是(︱)“巨”共(6)画,第二画是(︱)原因:暑假上来学生对上学期的一些特殊笔画已遗忘,把它们全拆开了。
9、错题:(五颜六色)的云海(高大)的雄鸡原因:学生对事物的特点不够了解,所以在填写时摸棱两可。
10、错题:工(做)(做)文(做)业(作)事原因:平时遇到类似的词语时,没根据意思好好去记,一旦要求灵活运用就乱用。
11、错题:橡皮筋的弹(tán dàn)力很好。
子弹(tán dàn )穿过了那件厚厚的防弹(tán dàn)衣。
原因:学生知道读什么音,可选时粗心,也有个别学生声调分不清。
12、错题:乐颠颠(快快乐)(高兴兴)(明白白)原因:学生只注意ABB形式,没有考虑这样的词存不存在。
13、错误:我的家乡是美丽的湖州。
湖州是我美丽的家乡。
李小青是我们班的劳动委员。
劳动委员是我们班的李小青。
原因:“是”字句改写时,没有考虑前后内容。
14、错题:灿烂(地)阳光兴奋(的)回家跑(地)快原因:对于“的”“地”“得”运用是一个难点,二年级学生还小,分不清词性,在加上刚接触,因此做错较多。
五年级数学上册错题集一
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五年级上册错题集(一)1. 若小红向东走100米,记作—100,则小强向西走120米,记作()2.如果乌龟0处先向东爬行4格,又向西爬行7格,这时乌龟的位置应记作()米。
3.一栋大楼,地面以上有20层,地面以下有3层。
地面以上的楼层记作正数,大楼每层高3米。
(1)—2层表示什么意思?(2)坐电梯从+2层到—3层,电梯下降了多上米?4.如下图,用竹篱笆围成一个梯形养鸡场,场地的一边利用房屋的篱笆,篱笆的总长度是95米,这个养鸡场占地多少平方米?5.一块梯形菜地的上底长300米,下底长500米,高50米,这块菜地的面积是()①4公顷②2公顷③4平方米6.一位足球守门员练习折返跑,从守门位置出发,向前跑记作正数,向后跑记作负数,它的练习记录如下:(单位:米)+7 —3 +11 —8 —5 +12 —10守门员离开守门位置最远是()7.一个三位小数“四舍五入”后是8.20,这个数最小是(),最大是()8.一个小数的千分位“五入”后是5.85,这个数精确到十分位是()。
① 5.8 ②5.9 ③6.09.马小虎在读一个小数时,忘读小数点了,把这个小数读成了二十万零五十七。
如果这个小数只能读一个“零”,那么原来的小数是多少?如果可以读出两个“零”呢?10.判断题,一个减法算式中,被减数比减数多10.01,比差0.9,那么被减数是10.91.()11.填上合适的单位,故宫的面积大约是72 ()12.把497500000改写成用“万”作单位的数是(),用“亿”作单位且保留一位小数约是()13.把两根同样长的铁丝分别围成正方形和平行四边形,比较他们的面积()①正方形的大②平行四边形的大③一样大④无法比较哪个大14.计算阴影部分面积15.在自行车40米慢骑比赛中,李萍骑了2.24分钟,王媛骑了2.15分钟,陈华骑了1.95分钟,赵颖骑了2.20分钟。
四人中谁是第一名?比第四名慢多少分钟?16.丽丽给妹妹3.55元钱后,妹妹还比她少0.35元。
六年级上学期数学 易错题专项练习
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1、有一组相互咬合的齿轮(1)大齿轮有140个齿,小齿轮的齿数是大齿轮的1/5,小齿轮有多少个齿?(2)小齿轮有28个齿,是大齿轮的1/5,大齿轮有多少个齿?(3)小齿轮每分钟转动400圈,大齿轮每分钟转的周数比小齿轮少4/5,大齿轮每分钟转多少周?(4)大齿轮每分钟转80周,比小齿轮每分钟转的周数少4/5,小齿轮每分钟转多少周?2、2020先减去它的1/2,再减去余下的1/3,又减去余下的1/4......,最后减去余下的1/2020,最后的结果是多少?3、若A的9/10与B的11/12同样大,且A和B都不为0,则A与B比较,谁更大一些呢?4、一件商品原价5000元,先涨价1/5,又降价1/5,这时的价格是多少呢?5、若甲有30元钱,乙有50元钱(1)甲的钱是乙的几分之几?(2)乙的钱是甲的几分之几?(3)甲的钱比乙少几分之几?(4)乙的钱比甲多几分之几?1、2020先减去它的1/2,再减去余下的1/3,又减去余下的1/4......,最后减去余下的1/2019,最后的结果是多少?2、(1)若A 的9/10与B 的8/9同样大,且A 和B 都不为0,则A 与B 比较,谁更大一些呢?(2)若m ×3/5=n ÷3/5(m n 均不为0),则m 和n 的大小关系是( )。
3、一件商品原价5000元,先涨价1/10,又降价1/10,这时的价格是多少呢?4、若甲有40元钱,乙有50元钱甲的钱是乙的( ),乙的钱是甲的( ),甲的钱比乙少( ),乙的钱比甲多( )。
(括号内均填分数)5、一个工人加工一批零件,第一天完成了任务的51,第二天完成了剩下部分的31,第二天比第一天多完成了20个,那么这批零件共有多少个?7、小明三天看完一本故事书,第一天看了全书的41还少4页,第二天看了全书的31还多14页,第三天看了90页,这本书共有多少页?1、若甲有70元钱,乙有80元钱甲的钱是乙的( ),乙的钱是甲的( ),甲的钱比乙少( ),乙的钱比甲多( )。
福建教育综合错题集(1)
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1.在学与教的过程中,要有效传递的主要信息是(C )。
A.教学过程B.教学手段C.教学内容D.教学媒体2.教育心理学初创时期的时间大致为( C )。
A.19世纪20年代以前B.19世纪80年代C.20世纪20年代以前D.20世纪80年代4教育心理学的创始人是(B )。
A.华生B.桑代克C.布鲁纳D.加涅5.1924年我国第一本《教育心理学》教科书出版,它的作者是(D )。
A.陶行知B.蔡元培C.潘菽D.廖世承6.苏联心理学家阿格法诺夫做的“拾柴火”实验是(B )。
A.观察法实验 B.自然实验C.实验室实验 D.自然实验与实验室相结合实验7.教育心理学的研究和其它科学研究都应遵循的基本原则是( B )。
A.客观原则B.系统性原则C.教育性原则 D.发展性原则13.概念同化的典型方式是(A )。
A.接受学习 B.发现学习C.机械学习 D.有意义学习17.一种学习中所习得一般原理、原则和态度对另一种具体内容学习的影响,这种迁移是(D )。
A.正迁移 B.横向迁移C.特殊成分迁移 D.非特殊成分迁移18.小学生的个性倾向性主要表现在(B )。
A.需要、动机、世界观 B.理想、信念、世界观C.兴趣、动机、世界观 D.兴趣、爱好、理想22.提出问题的解决的五步模式被人们看作是一种经典的解决问题过程的标志是( A )。
A.杜威 B.纽厄尔C.华莱尔 D.巴甫洛夫26.教育心理学研究中,所采用的手段和方法应能促进学生的心理健康发展,这属于(A )。
A.道德性原则B.教育性原则C.系统性原则D.客观性原则27.研究中会处于被动地位,因果关系难以确定的研究方法是(B )。
A.观察法B.问卷法C.自然实验法D.实验室实验法28.(A)认为“教学的主要任务就是把知识转化为各年龄的学习者都能理解的知识结构,并让学生掌握学科的知识结构”。
A.有意义接受学习理论B.认知结构学习理论C.建构主义学习理论31.教师一句鼓励的话、一个充满信任的眼神,一个能引起共鸣的手势或表情使学生受到极大的鼓舞、增添无穷的勇气,取得显著的进步。
小学数学:四下错题集1
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(四下)第一单元一、填空1、姐姐的年龄是a岁,晓华的年龄是b岁。
再过x年后,姐姐比晓华大()岁。
2、甲组有x人,比乙组多6人,则乙组有()人。
3、科幻书每本a元,童话书每本b元,王芳同学买了6本科幻书和7本童话书,需要付()元。
4、a的2倍与b的一半的和用式子表示()。
二、解方程(1)X ÷ 8=2.5 (2)x-0.6x=48三、解决问题1、果园里有枣树比柿子树多60棵,枣树是柿子树的4倍,枣树和柿子树各有多少棵?2、两座大楼相距300米,甲乙俩人同时分别从两楼门口背向行走,7分钟后俩人相距860米。
甲每分钟走37米,乙每分钟走多少米?3、小明看一本故事书,看了60页,剩下的页数是看了的2倍。
这本故事书有多少页?(四下)第三单元一、填空1、a、b是自然数,a÷b=5,所以()是()的因数。
2、三个连续奇数的和是45,这三个奇数分别是()、()、()。
3、20以内,最小的质数与最大合数的和是(),积是()。
4、在非0的自然数中,最小的质数是(),最小的合数是(),最大的两位数偶数是(),最小的三位数奇数是()。
5、两个连续的非零自然数,他们都是质数,这两个数分别是()和()。
6、用0、2、3、4中的三个数组成一个同时是2、3、5倍数的最大三位数是()。
7、将44分解质因数是()。
(1)因数21=3×7,所以3和7都是21的()。
8、在括号里填上适当的质数。
30=()-()21=()+()二、选择题1、甲数×11=乙数,乙数是甲数的()A倍数B因数C自然数2、任何奇数加上奇数后()。
A一定是2的倍数B不是2的倍数C无法判断三、解决问题1、一个长方形周长是24米,它的长和宽的米数恰好是两个质数,这个长方形的面积是多少平方米?2、30个同学进行体操表演,若要求每队人数相同,可以怎样排队?(列出算式)(提示:说明每队几人,排几队。
)。
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错题集(配套练习册)1、把1米长的线段平均分成10份,每份是()分米,用分数表示是()用小数表示是()米,3份用小数表示是()。
2、把1元钱平均分成100份,每份是()分,用分数表示为()元,用小数表示为()元,56份用小数表示为()元。
3、零点八写作() 2.6读作()4、1厘米=(—)分米=()分米 1分=(—)元=()元70厘米=()米 500克=(——)千克=()千克10元6角=()元 7200克-()千克25米=()分米5、比一比0.6元○0.9元 1.2元○1.02元 8.09米○8.9米6、4分是(—)元,还可以写成()元;35厘米是(—)米,还可以写成()米。
7、排排队。
(1)1千克,0.56千克,0.6千克,0.5千克()<()<()<()8、列竖式计算。
18.3-7.5= 6-3.2= 4.3-1.2=0.3+17.6= 6.5-3.7= 10-9.2=6.2+707= 4.2+4.2= 5.5-3.7=.9、在跳远比赛中,小明跳2.2米,小亮跳2.4米,小军跳2.7米。
谁跳的最远?按从远到近给他们排一排名次。
10、跳远比赛中,小明跳了3.2米,小亮跳了2.9米,小明比小亮多跳了几米?11、一件衣服63.5元,一双鞋比一件衣服贵3.5元,买一双鞋和一件衣服共需多少钱?12、小明50米赛跑成绩是8.3米,小明比小丽慢0.4秒,小丽50米赛跑的成绩是多少?1、用竖式计算。
24×30= 30×16= 54÷6×72、一个排球65元,一个足球80元。
买4个排球和4个足球共需多少钱?3、学校运来一批练习本,一共有8箱,每箱15捆,每捆20本,一共运来多少本练习本?4、一共有136根木头,要4头大象一次运走,每头大象运2捆,平均每捆赢有多少根木头?5、甲种袜子6双共12元,乙种袜子一双2.4元。
那种袜子便宜?便宜多少?6、方格本每行有10个方格,每页有13行,每本21页,一本方格本共有多少个格?7、三(1)班同学喜欢看动画片的有35人,喜欢看科幻片的有25人,既喜欢科幻片,又喜欢动画片的有20人,三(1)班一共有多少人? 8、1个西瓜可以换3个菠萝,2个菠萝可以换6个橘子,3个西瓜可以换多少个橘子? 9、一支水彩笔5角,一瓶墨水的价钱等于5支水彩笔的价钱,钢笔和一瓶墨水5支水彩笔一样贵。
一支钢笔多少钱? 10、一头牛的重量等于二头猪的重量,4头猪的重量等于8只羊的重量,4只羊重300千克,一头牛有多重? 11、△+□=240 △=□+□+□ △=( ) □=( ) 1、在你的座位上,你面向南,那么你的后面是( ),左面是( )右面是( )。
2、早晨太阳升起的时候,你面对太阳,你的左面是( ),右面是( ),后面是( )前面是( )。
3、(1).健身中心在小青家的( )方向;公园在小青家的( )方向;图书馆在小青家的( )方向;广场在小青家的( )方向;学校在小青家的( )方向;小青家的西北面有( )和( )。
(2)加油站在广场的( )方向;广场在加油站的( )方向;健身中心在学校的( );学校在健身中心的( )方向。
(3)小青从家去健身中心有几条路可以走? 4、直接写得数。
404÷4= 540÷3= 309÷3= 0÷12= 400÷8= 910÷7= 840÷4= 515÷5=5、列竖式计算。
408÷4= 215÷7= 816÷8= 840÷4= 505÷5=健身中心 公园 广场 商店 学校医院加油站饭店 图书馆 小青家6、比一比在○里填上:“﹥”“﹤”或“=”。
705÷3○360÷2 430÷3 ○262÷2 175÷5○380÷4 550÷5○505÷5 7、猜一猜△代表一个数字。
2△△÷4的商是( )位数;4△△÷4的商是( )位数;□△△÷5的商是3位数,□里可能填( )。
8、估一估71÷ 8≈ 356÷ 6≈ 753÷5 ≈ 63÷8≈ 323÷6 ≈ 138÷7≈ 181÷3≈ 447÷5≈9、李叔叔4天卖了8箱冰棒,每箱30支,每支2元。
李叔叔平均每天卖多少支冰棒?李叔叔4天卖了多少钱?某地2007年旅游人数统计图 10、数量/人500100015002000250030001234567891011121柱形图 2柱形图 3(1) 哪一个月的旅游人数最多?哪一个月的旅游人数最少? (2)12月份的旅游人数比7月份少多少人?(3)从图上你还能知道什么?11、下面是某小学各年级植树统计图,请根据图回答问题。
某小学一至六年级植树棵树统计图数量/棵20406080100120一年级二年级三年级四年级五年级六年级三维柱形图 1(1)二年级比一年级多植( )棵。
(2)四年级比五年级少植( )棵。
(3)( )年级植树的棵树是一年级的2倍。
(4)你还能提出什么数学问题?请解答出来。
12、小明和4个同学一起测1分钟脉搏跳动的次数,分别是:75次、67次、72次、70次、76次。
他们平均1 分钟脉搏跳动的多少次?13、农民伯伯前5天植树260棵,后4天植树235棵。
农民伯伯平均每天植树多少棵?14、气象小组测得一个星期中每天的最高温度分别是31℃,33℃,34℃,32℃,30℃,35℃,29℃。
(1)根据上面数据完成统计表。
一周最高温度统计表星期 一 二 三 四 五 六 日 温度/℃(2) 根据统计表,完成统计图。
一周最高温度统计图星期日六五四三二一0 28 29 30 31 32 33 34 35 36 37 38 39 温度/℃ (3)这一个星期内的平均最高温度是多少摄氏度?(3) 如果这个气象小组是北京的同学,你能猜出这个星期是在几月吗? 15、小明的成绩单比小心撕破了,你能帮他算出语文成绩吗?16、一年有( )个月,平年全年有( )天,闰年全年有( )天。
语文 数学 外语平均分 80 838517、一年里有( )个31天的月份,有( )个30天的月份,2月在( )年是28天,在( )年是29天。
18、一年共( )个季度,第二季度( )天,十一国庆节在第( )季度。
19、一般公历年份是( )的倍数的那一年是闰年,但当公历年份是整百数时必须是( )的倍数才是闰年。
20、中华人民共和国是( )年( )月( )日成立,到今年( )月( )日是建国( )周年。
21、1984年是( )年,全年有( )天,2008年是( )年,2月份有( )天。
22、1985年5月1日是星期三,1985年5月31日是( )。
23、一列火车晚上10时出发,第二天早上9时到达目的地,这列火车共行驶( )小时。
24、课外兴趣小组15:20开始活动,经过1小时10分钟后结束,结束时间是( )时( )分。
25、从时、分、月、日、分钟、小时、天中选择合适的填在( )里。
(1)小明从8( )开始上课,一节课上了40( ),要到8( )40( )下课。
(2)妈妈昨天晚上10( )睡觉,今天早上6( )起床,她一共睡了8( )。
(3)修路队从4( )15( )开工,修了5个( )零10( )到9( )24( )完工。
26、半夜12时,用24时计时法可以表示成( )的24时,也可以表示成( )的0时。
27、某商店的营业时间是上午9时~12时,下午1时30分~7时30分,全天营业时间是( )。
28、小花每天早晨7:40到校,中午11:35离校,13:50到校,16:30离校,小花一天在校的时间是( )。
29、美味餐厅。
(1)美味餐厅中午的营业时间是从上午( )到下午( ), 晚上的营业时间是从下午( )到晚上( )。
(2)一天共营业多长时间?30、同学们乘车去春游,8:25开车,经过80分钟到达春游地点,到达时间是几时几分? 31、 车次 始发站 开点 终点站 到点 运行时间 T15 北京西 18:19 广州 第二天16:25 1461北京15:00上海第二天12:3032、小明2001年9岁,可他只过了2个生日,他是( )年( )月( )日出生的。
33、某工厂第一季度生产机器425台,第二季度生产571台。
上半年平均每月生产多少台机器?34、一架飞机以每小时850千米的速度从甲地飞往乙地,它10:00从甲地起飞,17:00到达乙地。
甲、乙两地相距多少千米?第六单元 1、 写上合适的单位名称。
(1)体育场的占地面积约7400( ) (2)书桌桌面的面积( ) (3)我国领土面积约960万( ) (4)长江总长度约( )中午:11:00~14:30 晚上:16:30~21:30(5)大象约重2()(6)数学教科书封面的面积约300()(7)小明身高142()(8)北京市的面积大约16807()2、一块长方形玉米地,长400米,宽300米。
如果每公顷平均收玉米10吨。
这块玉米地共收玉米多少吨?3、小强围着一个正方形人工湖走4圈,一共走了8000米,这个人工湖的面积是多少平方米?合多少公顷?4、修路队在一条长125米,宽3米的人行横道上铺方砖。
如果每平方米铺5块,一共要铺多少块这样的方砖?5、一个正方形和一个长方形的周长相等,长方形长24米,宽16米,这个长方形和正方形的面积各是多少?6、一个长方形花坛,长6米,宽3米。
(1)如果在花坛里每平方米种4株花,这个花坛一共可种多少株花?(2)如果在花坛里每2平方米种一棵树这个花坛一共可种多少棵树?,课外作业1、学校买来白粉笔440盒,是彩色粉笔的4倍。
学校买来彩色粉笔多少盒?7、一个足球40元,是一个排球价钱的2倍,买10个排球需要多少元?8、三年级有学生84人,是二年级的2倍,二年级有多少学生?两个年级一共有多少学生?4 、某学校有84名教师。
每6人一间办公室,需要多少间办公室?每2人一张办公桌,需要几张办公桌?5、()÷9=4……□,余数最大可以是(),这时被除数是()。
6、()÷()=9……5,除数最小是(),这时被除数是()。
7、一件大衣的售价是565元,是一件上衣价格的5倍,一件上衣的售价是多少元?8、小刚家离图书馆180米,他全会走了5分钟,回来时多用了1分钟。
小刚回来时平均每分钟走多少米?9、图书室的两个书架上共存书264本,如果再放入甲书架上6本书,并从乙书架上拿走2本书,这时两个书架上的书就同样多了。
两个数加上原来各存多少本书?10、“小马虎”计算一道除法题时,把除数6错写成9,计算结果是商16余6,正确的商应该是多少?11、被除数与除数的和是77,商是10,则被除数是多少?12、爸爸要校对120万字的书稿,已经校对了九天,还剩下48万字没校对。