初一选择练习题带答案
初一数学练习题及答案
初一数学练习题及答案一、选择题1. 下列哪个数是偶数？A. 3B. 4C. 7D. 92. 8 × 7 = ?A. 16B. 54C. 48D. 153. 三个角的和等于多少度？A. 180°B. 90°C. 360°D. 270°4. 36 ÷ 4 = ?A. 12B. 8C. 10D. 145. 排除法求得的，下列哪个数是奇数？A. 10B. 21C. 32D. 46二、填空题1. 5 ÷ 0 = ______2. 9 × ______ = 543. 3 + ______ = 84. 27 ÷ ______ = 35. 15 - 8 = ______三、计算题1. 请确定正方形的周长，边长为7cm。
2. 总价为90元，已经支付了50元，还需要支付多少元？3. 某商品原价为120元，打8折后的价格是多少？4. 某地有100棵树，其中80棵是苹果树，其余是梨树。
苹果树占总数的比例是多少？5. 一辆车以每小时60千米的速度行驶2个小时，共行驶了多少千米？四、解答题1. 请你用竖式计算：25 × 36 = ____2. 简化下列分数：（1）20/30 （2）18/543. 请你解方程：5x + 7 = 224. 请你画出一个等边三角形，并标注出其边长和角度大小。
5. 请你列出一个平行四边形的性质。
答案：一、选择题1. B2. C3. A4. A5. B二、填空题1. 无意义2. 63. 54. 95. 7三、计算题1. 周长为28cm2. 还需支付40元3. 打折后的价格为96元4. 苹果树占总数的比例为4/5或80%5. 共行驶了120千米四、解答题1. 9002. （1）2/3 （2）1/33. x = 34. [在文章中画一个等边三角形并标注边长和角度大小]5. （1）对角线相等（2）相对角是平行边对应的内角（3）相邻边互补。
(完整版)初一语文选择题专项练习和答案解析
一、选择题（题型注释）1.下列词语书写正确的一项是(3 分) ( )A．真谛遒劲妇孺皆知识破天惊B．羸弱羁绊变换多姿叱咤风云C．疲倦蜷伏踌躇满志略胜一筹D．怪诞嗔视躹躬尽瘁义愤填鹰2．下列加点字注音有误的一项是(3 分)( )A.归省(xǐng) 行辈(háng)棹着(zhào) 晦暗(huì) 戛然而止(jiá)B.颦蹙(cù) 嗔视(chēn) 阴霾(mái) 疮痍(chuāng) 尽态极妍(yán)C.颛顼(xū) 呓语(yì) 吞噬(shì) 虫豸(zhì) 叱咤风云(zhà)D.羸弱(léi) 荫庇(yīn) 砭骨(biān)荷笠(hé) 毛骨悚然(sǒng)3.下列加点成语使用最恰当的一项是（）（3 分）A.正赶上汛期，江水很大，络绎不绝，让人很是担心。
B.那位老人脸上已有不少皱纹，一身纳西族的装束却穿戴得一尘不染。
C.写事件，不写其来龙去脉，只取其涉笔成趣的地方加以渲染，一丝不苟，含蓄浓缩。
D.老同学难得一聚，畅饮赋诗，高谈阔论，尽显才情，好不自在。
4.下列句子没有语病的一项是（）(3 分 )A．通过社会实践活动，让我们接触了社会，开阔了视野。
B．阅读优秀的文学作品，既能增长知识，又能丰富情感。
C．具有认真负责的工作态度，是一个人事业成败的关键。
D．为防止不再发生类似的伤害事故，政教处采取了很多安全措施。
5．下列注音完全正确的一项是（）（3 分）A.憩息（qì）蹇劣（jiǎn）剽悍（biāo）岑寂（cén）B.跳踉（liáng）聆听（líng）奢侈（shē）隽妙（jùn）C.德馨（xīn）惊觉（jué）案牍（dú）蛰伏（zhé）D.分娩（miǎn）怒不可遏（è）怡然自得(yí) 远遁（dùn）6.下面一段文字的划线句子中，有语病的一项是（）(3 分 ) A．在德国，喜欢吃鱼的家庭中，长年备着一种药丸。
初一语文选择题练习试题集
初一语文选择题练习试题答案及解析1.使用句子时，我们常会犯“用词不当”和“搭配不当”的错误。
请找出下面句子中没有这两种语病的一项（）（3分）A．经过一个月的初中生活，我们的知识水平有了很大的改善。
B．我们愿意用自己的所学到的知识为您的孩子效犬马之劳。
C．中华人民共和国对钓鱼岛及附近海域拥有无可争辩的主权。
D．《水浒传》这部电影出色地塑造了宋江、林冲、武松、鲁达等人的英雄好汉事迹。
【答案】（3分）C【解析】A 水平有了很大提高，主谓搭配不当；B “效犬马之劳”含贬义，感情色彩不当D 塑造了形象，动宾搭配不当【考点】辨析或修改病句。
2.给下面加点字注音，根据拼音写汉字。
（4分）祈祷（）彷徨（）鞠躬尽cuì（） qiè而不舍（）【答案】（4分）qí pánɡ瘁锲（每处1分）【解析】辨识拼音，首先要读准汉字，排除方言的干扰，不可读错，拼读时注意易混的声母与韵母。
辨识字形，要根据词义字义结合和形声字的特点注意偏旁部首。
【考点】识记并正确书写现代汉语普通话常用字的字音。
识记并正确书写现代常用规范汉字。
3.下列句中加点成语使用不正确的一项是A．小明对每道题都不求甚解，虽然很快就完成了作业，但做错的也很多。
B．真是心有灵犀一点通，我正犯愁没法解决这个问题，你都替我想到了。
C．“五一”期间，北京植物园的各种鲜花怒放，争奇斗艳，真是琳琅满目。
D．小妹妹手舞足蹈，活泼可爱，夸张的言行，引得在场的人都忍俊不禁。
【答案】C【解析】A、不求甚解：原指读书时不求深入;只求了解一个大概.现多指学习、办事等不认真;不求深入了解. B、心有灵犀一点通：比喻恋爱着的男女双方心心相印。
现多比喻比方对彼此的心思都能心领神会。
C、琳琅满目：比喻精美、珍贵的物品很多.。
D、手舞足蹈：形容情绪高涨到极点。
经分析，C项的成语用法错误。
【考点】本题考查学生运用成语的能力。
点评：平时学习和生活中常见的、出现较多的词语、成语等，要做到知其意，善运用。
初一数学练习题及答案
初一数学练习题及答案一、选择题（每题3分，共30分）1. 下列哪个选项是最小的正整数？A. 0B. -1C. 1D. 2答案：C2. 计算下列算式的结果是多少？A. 3 + 2 = 5B. 4 - 1 = 3C. 2 × 3 = 6D. 5 ÷ 2 = 2.5答案：C3. 哪个选项表示的是负数？A. 5B. -3C. 10D. 0答案：B4. 下列哪个分数是最接近0的？A. 1/2B. -1/4C. 1/10D. -1/10答案：D5. 一个数的3倍是18，这个数是多少？A. 6B. 5C. 3D. 2答案：A6. 一个长方形的长是10厘米，宽是5厘米，它的面积是多少平方厘米？A. 25B. 50C. 75D. 100答案：B7. 下列哪个选项是正确的不等式？A. 5 > 3B. 2 < 4C. 6 ≥ 7D. 8 ≤ 8答案：D8. 一个数字除以2再乘以3，结果是9，这个数字是多少？A. 1B. 2C. 3D. 4答案：C9. 一个数的一半加上3等于8，这个数是多少？A. 5B. 7C. 10D. 12答案：C10. 下列哪个选项是正确的比例？A. 2:3 = 4:6B. 3:4 = 6:8C. 5:6 = 10:12D. 7:8 = 14:16答案：C二、填空题（每题4分，共20分）1. 一个数的3倍加上4等于19，这个数是______。
答案：52. 如果一个数的相反数是-7，那么这个数是______。
答案：73. 一个数的平方是36，这个数是______。
答案：±64. 一个数除以4的商加上5等于10，这个数是______。
答案：125. 一个数的1/3加上2等于5，这个数是______。
答案：9三、解答题（每题5分，共20分）1. 一个长方形的长是8厘米，宽是4厘米，求它的周长和面积。
答案：周长= 2 × (8 + 4) = 24厘米；面积= 8 × 4 = 32平方厘米。
初一英语单项选择(50题)练习题及答案及解析含答案
初一英语单项选择（50题）练习题及答案及解析含答案一、选择题1．Mrs. Taylor has______ 8-year-old daughter who has_____ gift for painting--- she has won two national prizes.A．a; aB．an; theC．an; aD．the; a2．In ______ hottest reality show Running Man III，Luhan is ______ only new member．A．a;不填C．the; theA．a ; aA．a; /A．the; aB．the ; theB．the; aB．a; aB．a; anD．the;不填C．a ; theC．a; aC．a;／D．a ;／D．/; theD．the; the3．It will be ___ wonderful world if all nations live in ____ peace with each other.4．I caught _____ glimpse of the newspaper, from which I saw _____ report about the accident.5．- Would you like to go to___ concert tonight? - Of course. What kind of___ concert is it?6．—Tu Youyou who won the Nobel Prize in Physiology or Medicine in 2015 is ______excellent Chinese scientist.—I can’t agree more. In fact, she is _______ pride of China.A．the; aB．an; theC．an; aD．the; the7．—Is there ________ library in your new school?—Yes, it’s just ________ east of the experiment building.A．a; theB．a; /C．the;/D．the; the二、选择题8．As a child, I would sit for hours under an old tree doing ________, which was simply daydreaming.A．nothingA．nothingA．itB．everythingB．somethingB．oneC．somethingC．anythingC．thatD．anythingD．everythingD．the one9．Believe in yourself. Do this and no matter where you are, you will have ________ to fear.10．Your home town is really nice!The air quality is as good as______of Sanya.三、选择题11．—The air is very fresh in our city. There is less _______ than before.—Yes. The government has taken action to protect the environment.A．woodB．pollutionC．noiseD．water四、选择题12．—Jack is such a ________ person that everyone likes him.—He is. He always offers a hand when his neighbours are in trouble.A．curiousB．confidentC．helpfulD．serious13．—Sorry, I can't afford to go abroad.—What about having a country travel with a little________ price?A．cheaperB．higherC．lowerD．less5、选择题14．—Thanks for looking after me ________ my illness, Millie.—Don’t mention it. That’s what friends are for.A．throughB．amongC．withD．across15．—Thanks for looking after me ________ my illness, Millie.—Don’t mention it. That’s what friends are for.A．beyondB．throughC．acrossD．with六、选择题16．Far water does not ________ near fire.A．put upB．put awayC．put outD．put in七、选择题17．—Listen! Tom ________ be listening to the music while doing his homework.—Let’s go upstairs to remind him to turn it off.A．shouldB．couldC．wouldD．must八、选择题18．_______hard work it is! And__________should I do to complete it well?A．What a, howB．What, whatC．How, whatD．What, how19．-_______________ fine day it is today!-Yes. the sunshine is __________ beautiful that I'd like to go hiking with you.A．How; suchA．What aB．What a; veryB．HowC．How; soC．WhatD．What a; soD．How a20．________ important information you’ve toldme!九、选择题21．一___________do your parents take exercise, William?—Less than three times a week.A．How longB．How muchC．How soonD．How often22．—I heard that you were a volunteer in Huai'an Marathon. ________ was it?—It was about 42 kilometres.A．How much—In a week.A．How oftenB．How soonC．How longD．How farB．How farC．How longD．How many23．—________ will you finish doing your work?十、选择题24．After the first lunar samples ________, Chang’e 5 finished its task on the moon.A．collectB．collectedC．were collectedD．will be collected25．—Who got the first prize?—Millie did. The result ______ just now.A．is announcedB．announceC．was announcedD．announced26．—Aunt Li, who is the pretty girl in red in the picture?—It’smy daughter. The picture________10 years ago.A．tookB．is takenC．has takenD．was taken11、选择题27．A recent survey shows the number of people who shop in stores________，while far moreare shopping online.A．decreaseB．decreasesC．is decreasingD．are decreasing28．—I haven't seen Jack for a couple of days.—He ________ for the English speaking competition which will take place next week.A．will prepareB．is preparingC．has preparedD．was preparing十2、选择题29．Just leave the key to the exercises behind, you will be dependent on it.A．orA．andB．andB．butC．soC．soD．butD．or30．The traffic rules say divers mustn’t drive if they are drunk, _______ they will be punished.十三、选择题31．My father never says he is good at cooking, but in fact he is. He always cooks deliciousmeals for us, that is, ________ .A．no pain, no gainC．practice makes perfect—Thanks. Just as the sayinggoes,”_____.”A．Each dog has its dayC．Practice makes perfectB．Many hands make light workD．The grass is always greener on the other sideB．actions speak louder than wordsD．a friend in need is a friend indeed32．—Amy, your pronunciation is so beautiful now. How do you make it?十四、选择题33．—I was too busy to see the singing competition.—________. I have to say it’s really wonderful.A．No problemB．You are welcomeC．Not at allD．It’s a pity十五、选择题34．________ ill, I can’t go to school today.A．Because ofB．AsC．BeingD．With35．A woman was found ________ in her house this morning. The police said she was woundedwith a knife and bled to ________.A．died; deathB．death; deadC．dead; deathD．death; death36．--- Have you seen the movie《Lost in Thailand》?---Yeah, it’s truly worth ________. It’s ________ interesting that I’ve seen it twice.A．seeing; too B．to see; enough C．seeing; so D．to see; such37．—It is kind the doctors to devote all the time he had to for the patients.—I think so, they are so great.A．for, care B．of, care C．of, caring D．for caring38．During the Spring Festival, we Chinese people ___ door gods on gates, but now few familiesdo so.A．used to put up B．used to put inC．were used to put up D．were used to putting in十六、选择题39．The number of city parks in Lishui ______ a lot since it became a district of Nanjing.A．increaseB．will increaseC．increasedD．has increased十七、选择题40．The drama, “The Empress of China" that was pulled off the air for technical reasonsnowback on TV．A．isB．areC．hasD．have41．—Have you found the building where the lecture will take place?—Yes. But the campus ________ large and I nearly got lost just now.A．wasB．had beenC．will beD．is42．—I wonder if your father _______ you to go swimming.—I'm not sure. But I will tell you if he _______ to let me join you.A．will allow; agreesB．allows; agreesagree43．—I wonder what makes you a successful manager.—I ________ as a waiter for five years and it makes a lot of contributions to my tod ay’s work.A．serveA．being cost—How cool !A．wasB．isC．are going to beD．is going to beB．have servedB．be costC．was servingC．costingD．servedD．cost44．The exam he paid no attention to ________ him the chance to go to college.45．—There ______ a student science fair in our school next week.C．allows; will agreeD．will allow; will十八、选择题46．The tree ________ is near Shita Temple is over 1000 years old.A．whoB．whichC．whatD．whom47．Ne Zha is a Chinese cartoon ________ has been popular in China and is much loved by littlechildren and their parents.A．whoB．whatC．whichD．it48．—Are you interested in the talk showThe Readeron CCTV?—Sure. It's a great TV program ________ brings the habit of reading back into the public.A．thatB．whatC．whoD．whom 十九、选择题49．You should say it louder ________ everyone can hear you.A．in orderB．toC．so thatD．in order to50．—Look! Someone is running the red lights.—We should wait ________ others are breaking the rules.A．althoughB．becauseC．unlessD．if【参考答案】***试卷处理标记，请不要删除一、选择题1．C解析：C【解析】试题分析：考查冠词。
初一人教版英语单项选择(50题)及练习 含答案
初一人教版英语单项选择（50题）及练习含答案一、选择题1．Living in_________ ever increasingly fast-paced world, we are facing greater competition, so we must take _________ advantage of every opportunity to develop.A．an; the B．an; /C．the; an D．the; /2．It is_______ honour to hear you speak so highly of me.A．不填B．a C．the D．an二、选择题3．As the old saying goes, politeness costs nothing and gains ________.A．nothing B．anything C．everything D．something4．We couldn’t understand ________ because they were talking in Russian.A．they B．them C．their D．theirs三、选择题5．—What do you think of the film Hi, Mom directed by Jia Ling?—I have never seen a ________ one before. I can’t wait to see it again.A．best B．worse C．better D．worst6．—Mr. Green, please feel ________ to let us know if you aren’t satisfied with our service.— OK, I will. It has been good so far.A．real B．ready C．free D．fresh7．—It will be ________.—That’s great! The whole world will be white.A．sunny B．cloudy C．snowy D．foggy四、选择题8．My brother often _________ his spare time to help me with my spoken English.A．puts up B．gives up C．opens up D．tidies up 9．—Hello, this is Taicang Middle School.—I want to talk to Mr. Chen. Can you ________ me ________?A．put…in B．put…out C．put…through D．put…up五、选择题10．We teenagers ________ have dreams. With dreams and hard work, anything amazing________ be created.A．may; can B．might; should C．should; can D．must; has to 11．—Will my car be ready by the end of the day?—It ________ be, sir. I’ll call if there’s any problem.A．must B．could C．shall D．should六、选择题12．________ role she played in the movie! That’s why she has a lot of fans.A．How an interesting B．How interesting C．What an interesting D．What interesting13．— ________ moving person Zhang Dingyu is! He devoted himself to treating and helping patients in Wuhan.—Yes, he won the award for Moving China last year.A．How a B．How C．What a D．What 14．How + adj./ adv. +主语+谓语+其他成分！例如：How fast he drives! 他开得真快呀！15．________ important information you’ve told me!A．What a B．How C．What D．How a16．_________ surpring news! Many people lost their lives in Xiangshui Chemical Plant explosion ．A．How B．How a C．What D．What a七、选择题17．—________ will the Jinniu Lake Animal Kingdom be open?—Maybe in the second half of this year.A．When B．Who C．What D．Where八、选择题18．I ________ for Beijing next Saturday. Do you know when the earliest plane ________ on Saturday?A．am leaving; takes offB．Leave; takes offC．leave; is taking offD．am leaving; is taking off19．—Lily, where is our father now? Go and get him for lunch.—Just a moment, please. Father ________ a phone call in his room.A．is making B．was making C．makes D．has made 20．—Peter, please be quiet. Your brother ________ on the phone.—No problem.A．records B．recorded C．was recording D．is recording 九、选择题21．I didn’t hav e breakfast this morning, ________ I am very hungry now.A．but B．so C．or D．and22．The music was too loud, I turned it down.A．so B．because C．but D．or23．The thing that matters is not whether you fail or not, ________ whether you try or not. A．and B．or C．so D．but 24．Mike， don't be afraid to make mistakes， _________ you'll never make progress．A．so B．or C．and D．but十、选择题25．— Could you tell me ______ ?— By searching the Internet.A．how did Carl get the news B．why Carl got the news C．how Carl got the news D．why did Carl the news26．—Could you please tell me ________ ?—Of course. I suggest Water City Restaurant.A．when can we get some food quickly B．when we can get some food quickly C．where can we get some food quickly D．where we can get some food quickly十一、选择题27．—Is the air pollution getting better these days?—No. ________ , water in the rivers nearby is becoming worse and worse. Can you find out the reason?A．It never rains but it pours B．A miss is as good as a mileC．The early bird catches the worm D．Burn the candle at both ends28．—If you keep practising speaking French every day, you’ll be better at it.A．Practice makes perfect B．Many hands make light workC．Put all your eggs in one basket D．Burn the candle at both ends十二、选择题29．Online short video apps like Douyin make________easier to do some shopping at home. A．it B．one C．this D．that30．—What makes you so brave to volunteer in the community?—Because I know that there must be so many people __________ for our support.A．to wait B．wait C．waiting D．waited31．It's impolite to keep someone________ for a long time.A．wait B．to wait C．waiting D．have waited 32．________ with my father’s handwriting, mine is poor.A．Compare B．Compared C．Comparing D．Compares 33．China has successfully prevented the Covid-19 from _______ through the country. A．spread B．to spread C．spreading D．spreads34．My father often ________ 15 minutes ________ newspaper every night.A．spend;read B．spend; reading C．spends;reads D．spends; reading 35．The way we thought of ________ the environment proved to be very useful.A．to protect B．protecting C．protected D．protects36．In order ________ for the competition, my sister forced herself to get up early this morning. A．not to be late B．not being late C．to be late D．being late 37．The doctor warned the patient oily food after the operation.A．not to drink B．to drink C．not to eat D．not eat 38．China now has many good chances for people returning from abroad their dreams. A．achieve B．achieved C．to achieve D．achieving39．A medical team, ________ five experienced doctors and ten skillful nurses, was sent to the earthquake-stricken area in Turkey.A．made up of B．made of C．made from D．made by十三、选择题40．—Have you ever worked in Nanjing?—Yes. I ________ in Nanjing since three years ago.A．would work B．worked C．was working D．have worked 41．The boy in red ___________ the football club for 3 years. He can play football very well now. A．has joined B．has been in C．joined D．was in十四、选择题42．She told me the sun ______ in the east.A．rise B．roseC．rises D．had risen43．My parents in Hong Kong. They were born there and have never lived anywhere else.A．live B．livedC．were living D．will live44．—There are so many swimmers swimming in the swimming pool.—Yes, and sixty percent _ children.A．is B．are C．was D．were45．People more chances to receive good health care than they used to, and they're living longer as a result.A．will have B．have C．had D．were having46．—Excuse me! You can’t take photos here. Look at the sign “NO PHOTOS”.—Sorry, I ________ it.A．don’t see B．am going to see C．didn’t see D．won’t see 47．The exam he paid no attention to ________ him the chance to go to college.A．being cost B．be cost C．costing D．cost十五、选择题48．—Do you know the boy ________is talking to Mr Zhang?—Yes. He is our monitor.A．which B．who C．whose D．whom十六、选择题49．The astronaut lives in ________ that he has to be careful with every movement.A．such little space B．so little space C．so much space D．such more space 50．—When will the railway that connects the two cities open?— next year. Only two thirds been built.A．Until; has B．Until; haveC．Not until; has D．Not until; have【参考答案】***试卷处理标记，请不要删除一、选择题1．B解析：B【解析】试题分析：考查冠词：第一空填an，生活在一个快节奏的世界，单词even以元音字母e开头，所以是an；第二空不填，固定词组take advantage of意思“利用”，句意：生活在一个快节奏的世界，我们面对较大的竞争，因此我们必须利用每个机会去发展。
初一数学选择题练习试题集
初一数学选择题练习试题答案及解析1.已知：是方程kx-y=3的解，则k的值是（）A．2B．-2C．1D．-1【答案】A【解析】知道了方程的解，可以把这对数值代入方程，得到一个含有未知数k的一元一次方程，从而可以求出k的值．【考点】二元一次方程的解2.已知方程组的解是，那么m、n的值为 ( )A．B．C．D．【答案】C【解析】由题意可知把方程组的解代入方程组，解关于m、n的方程组，，解得即为所求.【考点】二元一次方程（组）.3.下列四幅图中，∠1和∠2是同位角的是（）A．⑴、⑵B．⑶、⑷C．⑴、⑵、⑶D．⑵、⑶、⑷【答案】A【解析】由同位角定义可知，两条直线被一条直线所截，所构成的同一方向的角叫同位角，图⑴、⑵符合定义.【考点】同位角.4.计算2-（-3）的结果是（）A．-5B．5C．-1D．1【答案】B【解析】有理数的减法法则：减去一个数等于加上这个数的相反数本题是对有理数减法的考查，减去一个数等于加上它的相反数．解：2-（-3）=2+3=5．【考点】有理数的减法．5.下列运动属于平移的是（）A．荡秋千B．地球绕着太阳转C．风筝在空中随风飘动D．急刹车时，汽车在地面上的滑动【解析】A，荡秋千和B：地球绕着太阳转属于中心旋转，C属于不规则运动。
只有D符合平移【考点】平移点评：本题难度较低，主要考查学生对平移知识点的掌握。
根据平移的特点从位置，方向，大小等来去除错误选项即可。
6.一个正方形的面积是15，估计它的边长大小在（）A．2与3之间B．3与4之间C．4与5之间D．5与6之间【答案】B【解析】解：∵一个正方形的面积是15，根据面积=边长×边长，可得该正方形的边长为，∵9＜15＜16，∴开方后3＜＜4．【考点】正方形的性质点评：本题难度较低，本题考查的是估算无理数的大小及正方形的性质，根据题意估算出的取值范围是解答此题的关键．7.下列计算正确的是（）A．B．C．D．【答案】D【解析】根据有理数的混合运算、合并同类项、幂的运算法则依次分析各选项即可作出判断. A. ，B. ，C. ，故错误；D. ，本选项正确.【考点】有理数的混合运算，合并同类项，幂的运算点评：计算题是中考必考题，一般难度不大，要特别慎重，尽量不在计算上失分.8.下列说法正确的是( )A．画射线OA=3cmB．线段AB和线段BA不是同一条线段C．点A和直线L的位置关系有两种D．三条直线相交有3个交点【答案】C【解析】根据平面图形的基本概念依次分析各选项即可作出判断.A.射线有一个端点，可以向一方无限延伸，B.线段AB和线段BA是同一条线段，D.三条直线相交有1、2或3个交点，故错误；C.点A和直线L的位置关系有两种：点在直线上和点在直线外，本选项正确.【考点】平面图形的基本概念点评：本题属于基础应用题，只需学生熟练掌握平面图形的基本概念，即可完成.9.－的倒数是（）A．－B．C．2D．－2【解析】根据倒数的定义即可得到结果.－的倒数是－2，故选D.【考点】本题考查的是倒数点评：解答本题的关键是熟练掌握倒数的定义：乘积为1的两个数互为倒数.10.平行线之间的距离是指（）A．从一条直线上一点到另一条直线的垂线段；B．从一条直线上一点到另一条直线的垂线段长度；C．从一条直线上一点到另一条直线的垂线的长度；D．从一条直线上一点到另一条直线上的一点间线段的长度.【答案】B【解析】根据平行线间的距离的定义直接进行选择即可．平行线之间的距离是指：从一条直线上一点到另一条直线的垂线段长度．故选B．【考点】本题考查了平行线间的距离的定义点评：解答本题的关键是熟练掌握平行线之间的距离是指：从一条直线上一点到另一条直线的垂线段长度．11.对某班40名同学的一次数学成绩进行统计，适当分组后成绩落在80~90这个小组的频率是20%，那么成绩落在80~90这个分数段的人数是( )A．20B．10C．8D．12【答案】C【解析】因为人数个数就是频数，频数=总数×频率，从而可求出解．∵40×0.20=8，∴这个分数段的人数是8人．故选C．【考点】本题考查频数的求法点评：解答本题的关键是掌握好频数=总数×频率，从而可求出解．12.已知23×83=2n，则n的值是（）A．18B．8C．7D．12【答案】D【解析】先根据幂的乘方法则统一为底数为2的形式，再根据同底数幂的乘法法则即可得到结果。
初一课外练习语文选择题及答案20题
初一课外练习语文选择题及答案20题1. 下列成语中，与“拔苗助长”意思相反的一组是：A. 盲目自信、欲速则不达、胸无点墨、按部就班B. 胸无点墨、按部就班、欲速则不达、盲目自信C. 欲速则不达、按部就班、盲目自信、胸无点墨D. 欲速则不达、胸无点墨、按部就班、盲目自信答案：D2. 下列词语中，错别字是：A. 爷爷B. 猴子C. 蜜蜂D. 血压答案：A3. “力挽狂澜”这个成语出自以下哪个典故：A.《梁山伯与祝英台》B.《西游记》C.《红楼梦》D.《水浒传》答案：D4. 下列句子中，标点符号使用正确的一组是：A. “大禹治水传说，给人们带来很多启示。
”B. “大禹治水传说, 给人们带来很多启示。
”C. “大禹治水传说，给人们带来很多启示。
”D. “大禹治水传说给人们带来很多启示.”答案：C5. 下列词语中，有错别字的一组是：A. 厨房、打扫、打破、假期B. 厨房、大嫂、大厨、假期C. 厨房、打扫、大厨、假期D. 厨房、大婶、打破、假期答案：B6. “揠苗助长”这个成语的意思是：A. 过于自信，结果适得其反B. 从小事入手，逐渐积累C. 高估自己的能力，导致失败D. 用力过猛，反而事与愿违答案：D7. “五十步笑百步”这个成语用来形容的情境是：A. 一个人比另一个人还要笨B. 一个人不敢面对自己的错误C. 一个人高估了自己的能力D. 一个人对别人的优势视而不见答案：D8. 找出下列句子中的并列连词：A. 喜欢唱歌，跳舞又好看。
B. 我今天要去买菜，因为明天有客人。
C. 他既聪明也勤奋。
D. 他跑得很快。
答案：C9. 下列句子中，句子成分划分正确的一组是：A. 她慢慢地走着；太阳高高地升起。
B. 她慢慢地走着，太阳高高地升起。
C. 她慢慢地走着：太阳高高地升起。
D. 她慢慢地走着——太阳高高地升起。
答案：B10. 下列句子中，有主谓宾结构的一组是：A. 妹妹正在画画。
B. 小猫一直在追赶。
C. 火车驶过大桥。
初一语文选择题专项练习和答案解析
一、选择题（题型注释）1．下列词语书．写．正．确．的一项是(3 分) ( )A．真谛遒劲妇孺皆知识破天惊 B ．羸弱羁绊变换多姿叱咤风云C．疲倦蜷伏踌躇满志略胜一筹 D ．怪诞嗔视躹躬尽瘁义愤填鹰2．下列加点字注音．有．误．．的一项是(3 分)( )A．归省．(x ǐng) 行．辈(h áng) 棹．着(zh ào) 晦．暗(huì ) 戛．然而止(ji á )B．颦蹙．(c ù) 嗔．视( chēn) 阴霾．(mái) 疮．痍(chu āng) 尽态极妍．(y án)C．颛顼．(x ū) 呓．语(y ì) 吞噬．(sh ì) 虫豸．(zh ì) 叱咤．风云(zh à )D．羸．弱(l éi) 荫．庇(y īn) 砭．骨(bi ān) 荷．笠(h é) 毛骨悚．然(s ǒng)3．下列加点成语使用最恰当的一项是（）（3 分）A．正赶上汛期，江水很大，络绎．不．绝．．，让人很是担心。
B．那位老人脸上已有不少皱纹，一身纳西族的装束却穿戴得一尘不染．．．．。
C．写事件，不写其来龙去脉，只取其涉笔成趣的地方加以渲染，一丝不苟，含蓄浓缩。
．．．．D．老同学难得一聚，畅饮赋诗，高谈阔．论．．．，尽显才情，好不自在。
4．下列句子没有语病的一项是（）(3 分)A．通过社会实践活动，让我们接触了社会，开阔了视野。
B．阅读优秀的文学作品，既能增长知识，又能丰富情感。
C．具有认真负责的工作态度，是一个人事业成败的关键。
D．为防止不再发生类似的伤害事故，政教处采取了很多安全措施。
5．下列注音完全正确的一项是（）（3 分）A．憩．息（qì）蹇．劣（ji ǎn）剽．悍（bi āo）岑．寂（cén）B．跳踉（li áng）聆听（l íng）奢侈（shē）隽妙（j ùn）．．．．C．德馨．（xīn）惊觉．（ju é）案牍．（dú）蛰．伏（zhé）D．分娩．（miǎn）怒不可遏．（è）怡．然自得(y í) 远遁．（dùn）6．下面一段文字的划线句子中，有语病的一项是（）(3 分)A．在德国，喜欢吃鱼的家庭中，长年备着一种药丸。
初一语文选择题练习试题集
初一语文选择题练习试题答案及解析1.下列加点字注音完全正确的一项是（）（3分）A．宿儒 rú脊梁jí胡诌zhōu腆着tiǎn叱咤风云chàB．惩罚chěng模样mú筋骨jīng脚踝huái浑身解数xièC．归省xǐng契诃夫hē过瘾yǐn少顷qǐng戛然而止jiáD．嗔视chēn带挈qié诘难jié狡黠xiá味同嚼蜡jué【答案】C【解析】根据词词义和形声字中的声旁特点协助判断读音。
要注意易错的声韵母，比如b与p，j、q、x的区别，n、l的区别，z、c的区别，平舌音和翘舌音的区别，前后鼻音的区别。
运用反选排除法，选择容易判断的信息点，有错就排除，A．脊应为jǐ, 咤应为zhà； B．惩应为chéng，筋应为jīn；D．挈应为qiè，嚼应为jiáo。
故选C。
【考点】识记并正确书写现代汉语普通话常用字的字音。
2.下列注音有错误的一组是（）（3分）A讪笑（shàn ）秕谷(bǐ ) 脑髓（suǐ）群蚁排衙（ yá）B骊歌（lí）木屐（jī）狂澜（ lán ）鞠躬尽瘁（ cuì）C 炽痛（zhì）嗥鸣（ háo ）亘古（gèn ）锲而不舍（ qiè）D桑椹（shèn ）哺育（bǔ ）污秽（ huì）迥乎不同（jiǒng ）【答案】C【解析】C中应是“炽痛（chì）”【考点】识记并正确书写现代汉语普通话常用字的字音。
3.下列词语注意完全正确的一组是（）（3分）A．搓捻（liǎn）嘹亮（liáo）小心翼翼（yì）B．分歧（qí）诀别（juè）混为一谈（hùn）C．尴尬（gān）嘈杂（cáo）停滞不前（zhì）D．迁徙（xī）繁衍（yǎn）期期艾艾（ài）【答案】C【解析】A中“捻”的正确读音为“niǎn”；B中“诀”的读音应为“jué”;D中“徙”的正确读音为“xǐ”；因此答案应该为C。
初一数学练习题及答案
初一数学练习题及答案一、选择题（每题2分，共20分）1. 下列哪个数是最小的正整数？A. -3B. 0C. 1D. 22. 如果一个数的立方等于它本身，这个数可能是：A. 0B. 1C. -1D. 所有选项3. 一个数的平方根有：A. 一个正数B. 一个负数C. 两个数D. 没有数4. 以下哪个表达式的结果不是正数？A. 3^2B. 4^2C. (-2)^2D. (-3)^35. 一个数的绝对值是：A. 总是正数B. 总是负数C. 可能是正数或0D. 总是06. 两个负数相加的结果是：A. 正数B. 负数C. 0D. 无法确定7. 一个数除以它自己（不为0）的结果是：A. 1B. 0C. 该数D. 无法确定8. 以下哪个是偶数？A. 3B. 4C. 5D. 79. 一个数的倒数是：A. 总是正数B. 总是负数C. 可能是正数或负数D. 无法确定10. 如果a > b，且b > 0，那么下列哪个不等式是正确的？A. a > 0B. a + b > bC. a - b > 0D. 所有选项答案：1-5 C D C A C；6-10 B A C D D二、填空题（每题2分，共20分）11. 一个数的相反数是它自身的数是______。
12. 若a + b = 0，则a和b互为______。
13. 一个数的平方是25，这个数可以是______或______。
14. 一个数的立方是-8，这个数是______。
15. 一个数的绝对值是5，这个数可以是______或______。
16. 一个数的平方根是3，这个数是______。
17. 一个数的倒数是1/2，这个数是______。
18. 两个数的和是10，其中一个数是3，另一个数是______。
19. 一个数的平方是16，这个数的平方根是______或______。
20. 如果一个数的绝对值是3，那么这个数可以是3或______。
答案：11. 0；12. 相反数；13. 5, -5；14. -2；15. 5, -5；16. 9；17. 2；18. 7；19. 4, -4；20. -3三、计算题（每题10分，共30分）21. 计算下列表达式的值：(1) (-3)^2(2) √(16)(3) |-5|22. 解下列方程：(1) 2x + 5 = 11(2) x - 3 = 2x + 123. 化简下列表达式：(1) 4a - 3b + 2a - 5b(2) (3x + 2)(3x - 2)答案：21. (1) 9(2) 4(3) 522. (1) x = 3(2) x = -223. (1) 6a - 8b(2) 9x^2 - 4四、解答题（每题15分，共30分）24. 一个商店在一天内卖出了100件商品，每件商品的利润是5元。
初一数学选择题练习试题集
初一数学选择题练习试题答案及解析1.根据如图所给信息，每只玩具猫的价格为（）A．9元B．10元C．11元D．12元【答案】B．【解析】设一只玩具猫的价格为x元，一只玩具狗的价格为y元，由题意得，解得：则一只玩具猫的价格为10元．故选B．【考点】二元一次方程组的应用．2.将如图所示的图案通过平移后可以得到的图案是（）A．B．C．D．【答案】B．【解析】根据平移只改变图形的位置，不改变图形的形状与大小解答:观察各选项图形可知，B选项的图案可以通过平移得到．故选B．【考点】生活中的平移现象．3.下列从左到右的变形属于因式分解的是（）A．x2–2xy+y2=x（x-2y）+y2B．x2-16y2=（x+8y）（x-8y）C．x2+xy+y2=（x+y）2D．x4y4-1=（x2y2+1）（xy+1）（xy-1）【答案】D.【解析】A、结果不是整式的积的形式，因而不是因式分解，故选项错误；B、16是4的平方，而不是8的平方，故选项错误；C．x2+xy+y2≠（x+y）2，故选项错误；D． x4y4-1=（x2y2+1）（xy+1）（xy-1）故选D.考点: 因式分解的意义．4.已知，如图：点P是直线a外的一点，点A、B、C在直线a上，且PB⊥a，垂足是B，PA⊥PC，则下列错误的语句是（）A.线段PB的长是点P到直线a的距离B.PA、PB、PC三条线段中，PB最短C.线段AC的长是点A到直线PC的距离D.线段PC的长是点C到直线PA的距离【答案】C【解析】因为PA⊥PC，所以线段PA的长是点A到直线PC的距离，C错误.5.已知，则下列四个不等式中，不正确的是（）A．B．C．D．【答案】B【解析】根据不等式性质判定：当0＜a＜b时，-2a＞-2b。
例如：a=2，b=3时，-2×2＞-2×3可通过举例排除B。
【考点】不等式性质点评：本题难度较低，主要考查学生对不等式性质知识点的掌握。
为中考常见题型，可代入具体数值辅助分析。
初一数学选择题专项练习及答案
初一数学选择题专项练习及答案第一题
1. 一个数的一半是20，这个数是多少？
- A. 10
- B. 20
- C. 30
- D. 40
答案：D. 40
第二题
2. 某舞蹈团的成员有男生和女生，男生人数是女生人数的1倍，如果舞蹈团有48名成员，那么男生和女生各有多少人？
- A. 24男生，24女生
- B. 36男生，12女生
- C. 12男生，36女生
- D. 48男生，48女生
答案：B. 36男生，12女生
第三题
3. Tom甲比Tom乙早生了5天，如果现在是Tom甲的生日，那么Tom乙的生日是几号？
- A. 早5天
- B. 晚5天
- C. 同一天
- D. 需要更多信息才能确定
答案：B. 晚5天
第四题
4. 假设一辆汽车每小时行驶60公里，则行驶5小时能行驶的距离是多少？
- A. 250公里
- B. 300公里
- C. 350公里
- D. 400公里
答案：D. 400公里
以上是本文档的一部分内容，提供了初一数学选择题的练及答案，希望对提升学生的数学研究成绩有所帮助。
学生可以通过反复练这些题目，加深对数学知识的理解和掌握。
> 注：以上答案仅供参考，请自行核对。
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
初一选择练习题1)There is_______apple.A. aB. anC. theD. /2)She is_______English girl.A. aB. anC. theD. /3)I like playing_______piano, but he likes playing______football.A. the, theB. the, /C. /, /D. /, the4)Who is_______ girl in green?A. aB. anC. theD. /5)We are in________ Beijing No.1 High School.A. aB. anC. theD. /6)There are many________in his house.A. applesB. ApplesC. apple’sD. /7)I want an_______.A. orangeB. orangesC. bananaD. bananas8)Would you like_________vegetables?A. anyB. muchC. someD. many9)Would you like _______tea?A. someB. aC. anyD. many10)These are ___________.A．an egg B .a egg C. their egg D .eggs11)They are _________.A .banana tree B. banana treesC .bananas tree D. bananas trees12)This is ___________.A. keyB. keysC. a set of keyD. a set of keys13)They’re______, but I’m _______.A. German, ChineseB. German, ChinesesC. Germans, Chinese C. Germans, Chineses14)I like playing_______soccer,and he likes playing______basketball.A. the, theB. the, /C. /, /D. /, the15)Every_____ should_______excises.A. student, doB. students, doesC. student, doesD. students, do16)The class _____a map of the world on the wall.A. haveB. hasC. hadD. haves17)I often_______dinner at 8 p.m.A. eatB. eatsC. ateD. eated18)The class are _____football on the playground.A. playingB. playsC.playedD.play19)Look!They are______basketball.A. playingB. playsC.playedD.play20)He doesn't want to _______late for schoolA. beB.beingC. go D goes21)He helps him _____his sister .A. to findB. fndC. findingD. found22)I don’t like______juice，but Mike ______it.A. drinking, likesB. drinks, likesC. drink, likeD. drinked,liked23)No one__________me,I’m so sad.A.ListenB.sayC. Listen toD.say to24)It’s time to go to school,don't__________ late!A.isB.areC.beD./25)She is my _______sister, and Lily is____________.A. the second, the thirdB. the second ,thirdC. second, thirdD. second, the third26)Who are you talking ________?I am talking _________Jack.A.with, withB. to, withC. with, to D . to, to27)What's your telephone number ?---__________9160160A. I’mB. It'sC. This isD. That's28)__________,where is the bank?A. How are youB. Excuse meC.sorryD. Thank you29)---Thank you very much .----___________.A No thanks B. All rightC. You're welcomeD. Thank you30)The first class will __________at eight o'clockA.beginB. beginning C .began D .begins31)Lily ________lunch at school.A.don’t haveB. doesn't hasC. don’t hasD. doesn't have32)She can _________ Japanese.A.speakB.say C .speaks D. says33)This is _______pen.No,it'_________A. yours, yoursB. yours, yourC. your, yoursD. your,your34)Is this _______pen?Yes, it'_________A. he, hisB. his, hisC. him, hisD. his,him35)Is this _______pen?No, it'_________A. Lilys’, meB. Lilys’s, myC. Lily’s, mineD.Lilys’,mine36)Let me________the kite.A. to flyB. flyingC. fliesD.fly37)Let it_________.A. to goB. goingC. goesD.go38)What's that?A. It is deskB. It is a deskC .This is desk D. That is a desk39)Where is my ruler?A. It is on the deskB. It is in the tableC .This is in the bag D. This is on a desk40)What does your father do? -----A. He is a actorB. He does a workerC.He likes actingD. He is a worker41)_________? Three .A.Are you in Class ThreeB. What class you are in?C What class are you in D. Are you in Three Class42)Is this a watch? No, _________.A. it isn't B . this isn’t C. it's D. it is43)________old ____________he?A. What,isB. What, doC. How, isD. How,does44)_______a dog.A. It isn’t B . this is C. it is D. This45)___________this? This is a dog.A. Who isB. Who areC. What isD. What are46)___________they? --- My team members.A. Who is B Who are C. What is D. What are47)Are these __________pens?A. youB.hisC. heD.yours48)Where _______Mike ___________?A. does, fromB. come, fromC. are, fromD. is, from49)Are you_______America?A. do fromB. come fromC. fromD. /50)Do you want to __________English with me?A. sayB.speakC.talkD. ask1-5BBBCC6-10AACAD11-15BDCCA16-20BAAAA21-25BACCD26-30ABBCA31-35DACBC36-40DDDAD41-45CACAC46-50BBDCB。