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全国青少年机器人技术等级考试练习册四级(3)

全国青少年机器人技术等级考试练习册四级(3)

全国青少年机器人技术等级考试全真模拟题(一)一、单选题(共30题,每题2分,共60分)1. 关于晶体三极管描述不正确的有?A. 晶体三极管有三只引脚,分别叫做B(基极)、C(集电极)和E(发射极)B. 晶体三极管根据构造结构不同,分为NPN和PNP两种类型C. 晶体三极管有三只引脚,分别叫做B(基极)、P(阳极)和N(阴极)D. 晶体三极管可用于开关电路和放大电路2. 在流程图中表示判断条件的是?A. B.C. D.3. 想要让一个变量a每次都增大到自己的二倍,下列程序正确的是?A. a=2a;B. 2a;C. a=2*a;D. a==2*a;4. 下列关于顺序结构说法正确的是?A. 顺序结构的执行顺序是自上而下,依次执行B. 顺序结构的程序设计是最复杂的C. 顺序结构中只要没有延时函数或模块,程序都是同时执行的D. 顺序结构是指在程序中需要反复执行某个功能而设置的一种程序结构5. 下列那个选项中属于分支结构?A. for语句B. switch语句C. while语句D. do while 语句6. 关于PWM,以下说法正确的有?A. 当占空比为10%是,等效输出电压为4.5VB. 可以利用PWM管脚实现模拟信号输入C. PWM是指在数字系统中,通过调整占空比来实现模拟输出D. UNO主控板,A0-A5管脚具有PWM模拟输出功能7. 二进制数11+1=?A. 100B. 101C. 110D. 1118. 下列关于if语句说法正确的是?A. if语句只能适合单分支结构B. if语句可以变形为if-else 或者if-else if-elseC. 使用if语句就可以实现重复执行某一段功能D. if语句的执行顺序是自上而下,依次执行9. 如下图所示分支结构中说法正确的是?A. 该switch中没有default所以结构是错误的B. 当a==1时,先执行语句1,再执行语句2;再执行语句3;再执行语句4C. 当a==2时,先执行语句2,再执行语句3;再执行语句4D. 当a==3时,执行语句3后,跳出{},这段程序执行完毕10. 执行下列所示程序,输出a为?A. a=3B. a=2C. a=1D. a=011. 下列分支结构中格式正确的是?A.B.C.D.12. pinMode(pin,mode)函数设置数字引脚的工作模式,以下说明正确的有?A. 引脚的工作模式有:INPUT、OUTPUT两种B. 引脚的工作模式有:INPUT、OUTPUT、INPUT_PULLUP三种C. 引脚的工作模式有:INPUT、OUTPUT、HIGH三种D. 引脚的工作模式有:HIGH、LOW两种13. analogWrite(pin,val)函数中,val的值的说明不正确的有?A. Val值的范围0-255B. Val值为255时,引脚完全打开,管脚输出高电平C. Val值为255时,引脚完全关闭,管脚输出低电平D. 当val值为255时,和digitalWrite(pin,HIGH)效果一致14. 下列关于变量类型的说法正确的是?A. float代表的是浮点型,它可以保留到小数点后七位B. int代表的是整数型,可是表示真分数C. char表示的字符型,也可以表示一个字节大小的数字D. bool是布尔型,这种类型也可以取0-255的整数15. 下列关于程序三种基本结构说法正确的是?A. 顺序结构可以通过判断不同的情况,执行不同的内容B. 选择结构又称作分支结构,这种结构可以实现一定功能的循环C. 循环结构可以实现重复执行某个功能D. 只有循环结构中会用到break16. 获取电位器模块的返回值,以下选择正确的是?A. digitalRead(A0)B. digitalRead(3)C. digitalWrite(5)D. analogRead(A0)17. 关于pulseIn()函数,下列说法正确的是?A. pulseIn()函数用于向管脚输出高低电平B. pulseIn()函数用来读取一个管脚的脉冲(HIGH或LOW)C. pulseIn()函数只能读取管脚的高电平脉冲D. pulseIn()函数的返回值是0或者118. 如下图所示变量运算,说法正确的是?A. 程序结束后,a的值为2.5B. 程序结束后,a的值为2C. 变量c为整数型;a和b为浮点型D. 程序结束后,b的值为419. 关于多分支结构说法正确的是?A. 当表达式1成立时,执行语句1;再执行语句2,语句3B. 当表达式1不成立时,执行语句2;不执行语句1,语句3C. 表达式1成立,表达式2 也成立时,执行语句2D. 表达式1不成立,表达式2成立时,执行语句2;不执行其他语句20. 关于setup()函数和loop()函数,以下说法正确的是?A. 程序编写时,setup()函数和loop()函数可以缺失B. setup()函数里面的程序,在程序执行时通常放置程序的初始化程序C. loop()函数里面的程序,在程序运行时只运行一次,通常放置主执行程序D. 程序运行时,先运行loop()函数内的程序,然后运行setup()函数内的程序21. 下列选项中关于break和continue说法正确的是?A. 在循环结构中break是结束本次循环,continue是结束整个循环B. 在循环结构中break和continue用于结束整个循环C. 在循环结构中break和continue是结束本次循环D. 在循环结构中break是结束整个循环,continue是结束本次循环22. 下列选项中,说法不正确的是?A. 日常生活中如果路口遇到红灯,需要停车等待;如果是绿灯,则要开车通过;这段描述在程序中,属于分支结构B. 自动门看到人可以自动开启,在程序中属于分支结构C. S弯巡线小车是利用while循环结构判断是否遇到黑线的D. 使用蜂鸣器播放声音可以使用循环结构23. 使用UNO主控板控制小车的速度连续变化,可以使用引脚?A. 0B. 1C. 3D. A024. 下列程序中,没有实现了让变量a自动加1的效果的是?A. a+1;B. a=a+1;C. a+=1;D. a++;25. 下列关于变量的说法正确的是?A. 变量可以随时改变B. 在声明变量时,必须赋予初始值C. 程序中变量不仅值可以变化,名称可以随意变化D. 程序中变量只能用于计数26. 下列选项中关于循环结构说法错误的是?A. 循环结构可以减少源程序重复书写的工作量,用来描述重复执行某段算法的问题B. 循环结构中一般会标明循环的条件,不是无止境的循环C. 循环结构中,if语句最常用D. 循环结构while和do while的区别是:while先判断循环条件再执行内容;do while则先执行内容再判断循环条件27. 如下图所示循环结构,循环的次数为?A. 3B. 2C. 1D. 028. 下列程序书写格式正确的是?A.BC.D.29. 下列选项中不属于程序三种基本结构的是?A. 顺序结构B. 选择结构C. 总线结构D. 循环结构30. 下列关于变量定义正确的是?A. float a=0;B. int 2a=0;C. int a*=0;D. int a=0;b=0;二、多选题(共5题,每题4分,共20分)31. 如下列程序中,书写格式正确的有?A.B.C.D.32. 下列选项中说法正确的是?A. float代表的是浮点型,它可以保存七位有效数字B. 在声明变量时,可以根据需要赋初值或者不赋初值C. a--,指的是将变量自动减1D. a*3,指的是将变量扩大三倍33. 如果下图所示变量运算,程序结束后输出值正确的是?A. a=2B. a=2.5C. b=3.5D. b=4.534. 下列关于变量的运算说法错误的是?A. a++;指的是将变量a自动加1B. a--;指的是将变量自动减2C. a=a+1;这个等式不成立D. a=a*2;指的是将变量a增大235. 关于下图分支结构说法错误的是?A. 满足表达式执行语句2,不满足执行语句1B. 满足表达式执行语句1,不满足执行语句2C. 满足表达式先执行语句1,再执行语句2D. 不满足表达式先执行语句2 ,再执行语句1三、判断题(共10题,每题2分,共20分)36. 自定义函数可以将简化复杂的程序,或者减少工作量。

大学四级全套试题及答案

大学四级全套试题及答案

大学四级全套试题及答案一、听力理解(共30分)1. A) 教授的讲座B) 学生的日常对话C) 天气预报D) 电影评论2. A) 他错过了公交B) 他迟到了C) 他没有带伞D) 他忘记带书3. A) 去图书馆B) 去商店C) 去电影院D) 去公园4. A) 她对历史感兴趣B) 她喜欢数学C) 她擅长物理D) 她对科学感兴趣5. A) 他们计划去度假B) 他们计划去旅行C) 他们计划去露营D) 他们计划去徒步二、阅读理解(共40分)1. 根据文章内容,作者认为最有效的学习方法是什么?A) 重复练习B) 团队合作C) 独立思考D) 定期复习2. 文章中提到的“绿色生活”指的是什么?A) 减少污染B) 节约资源C) 保护环境D) 以上都是3. 根据文章,以下哪项不是作者提倡的健康生活方式?A) 定期锻炼B) 健康饮食C) 熬夜工作D) 保持乐观4. 作者为什么反对过度使用社交媒体?A) 它会导致隐私泄露B) 它会影响人际关系C) 它会导致注意力分散D) 以上都是5. 文章中提到的“可持续发展”是什么意思?A) 经济的持续增长B) 环境的持续改善C) 社会的持续发展D) 经济、环境和社会的协调发展三、完形填空(共20分)1. The new policy will come into _______ next month.A) effectB) affectC) factD) impact2. The company has decided to _______ the project due to budget constraints.A) postponeB) cancelC) delayD) abandon3. Despite his young age, he has a deep _______ of the world.A) insightB) outlookC) foresightD) hindsight4. The book is a _______ of the author's experiences in the war.A) recordB) reflectionC) accountD) portrayal5. She was _______ by the news of her friend's success.A) delightedB) shockedC) surprisedD) disappointed四、翻译(共10分)1. 随着科技的快速发展,我们的生活变得越来越便利。

大学英语四级练习卷+答案解析 (1)

大学英语四级练习卷+答案解析 (1)

大学英语四级试卷(满分120分,考试时间90分钟)一、选择题:(本题共20小题,每小题3分,共60分)1.When Pilot Officer Peter Thwaites was away on business,his neighbour gave his wife_____with the housework.A.an aidB.a helpC.a handD.a lift2.It is bad manners to______other people behind their backs.A.do upB.do byC.do away withD.do down3.Samuel has curly hair but his twin sister’s is quite__________.A.evenB.straightC.unevenD.regular4.If we let our eyes glide_____the lines of a book,we will probably be unable to come up with an understanding of what we have read.A.acrossB.inC.fromD.with5.At the party the_______shy Chelsea felt comfortable enough to offer to give the guests a piano solo.A.alwaysB.ordinarilyC.neverpletely6.Present at the Christmas party were the two princesses and their________ husbands and the Duke of Edinburgh.A.respectableB.respectfulC.respectiveD.respected7.Jean is slow but he brother,on the contrary,is quick at_______the point of an argument.A.snatching B.capturing C.grabbing D.grasping8.In an attempt to get to the_____of the problem,the reporter interviewed every eye-witness.A.rootB.gistC.baseD.center9.The narrow,sunless hall smelled_______of slake cabbage.A.uninterestinglyB.unpleasantlyC.uninvitedlyD.unpleasingly10.In the headmaster’s office,exercise—books kept________owing to the fact that he had marked very little recently.A.heaping onB.growing upC.piling onD.piling up11.Betty advised me to label our luggage carefully in case it gets_____in transit.A.misusedB.mishandledC.mistakenD.mislaid12.Our side my office window,there is a fire_______on the right.dderB.escapeC.stepsD.stairs13.The sight of the fruit salad made our daughter kit’s mouth_____.A.wetB.oozeC.waterD.moisten14.When Langston waited to be saved by Jesus,he saw the lighted candles on the altar_____in the draught from the opening window.A.flickeringB.flutteringC.shiveringD.wavering15.Marilyn will not be able to come to the Christmas party as she is_______ with a cold.id downid outid byid up16.Little_______a year ago that I would be studying here today in Britain.A.I thoughtB.thought IC.I did thinkD.did I think17.Not until______himself seriously ill.A.he had completed the task did he findB.had he completed the task did he findC.he completed the task had he foundD.did he complete the task he had found18.In vain_______to get in touch with the Embassy.A.they triedB.tried theyC.did they tryD.they have tried19.Seldom_____him fly into such a rage since I knew him.A.I sewB.I have seenC.had I seenD.have I seen20.Only by carrying out an open-door poling______.A.our country can be developedB.can be our country developedC.can our country developD.our country can develop二、翻译(共计10分)1.电影开演半小时了。

英语四级练习题

英语四级练习题

英语四级练习题一、听力理解(共15题,每题1分)Section A1. What is the man's major?A. BiologyB. ChemistryC. PhysicsD. Mathematics2. Why does the woman want to go to the library?A. To borrow a book.B. To return a book.C. To study for an exam.D. To meet a friend.Section B3. What is the main topic of the lecture?A. Climate change.B. Renewable energy.C. Fossil fuels.D. Environmental protection.4. What is the speaker's opinion about the future of renewable energy?A. It will replace fossil fuels completely.B. It is too expensive to be widely adopted.C. It has a promising future.D. It is not environmentally friendly.Section C5-15. (略)二、阅读理解(共20题,每题2分)Passage 1The article discusses the importance of a balanced diet and regular exercise for maintaining good health. It also emphasizes the role of sleep and stress management in overall well-being.6. What does the article suggest is crucial for health?A. A balanced diet.B. Regular exercise.C. Adequate sleep.D. All of the above.7. According to the article, what can lead to poor health?A. Lack of sleep.B. Excessive stress.C. Both A and B.D. None of the above.Passage 2The passage explores the impact of technology on education, highlighting both the benefits and the challenges it presents.8-15. (略)Passage 3This passage examines the role of social media in modern society, discussing its influence on interpersonal relationships and the spread of information.16-20. (略)三、写作(共1题,30分)Task: Write an essay of about 120-150 words on the topic "The Influence of Social Media on Young People."四、翻译(共1题,20分)Task: Translate the following paragraph from English to Chinese.In recent years, the rapid development of technology has brought about significant changes to our daily lives. The advancement in communication technology has made it possible for us to stay connected with friends and family no matter where we are in the world.注意:听力部分的答案需要根据实际听力材料来确定,而阅读理解部分的答案则需要根据文章内容来选择。

大学英语第四册练习册答案

大学英语第四册练习册答案

Answe‎r s for BOOK FourUnit 1Part II Readi‎n g Compr‎e hens‎i on (Skimm‎i ng and Scann‎i ng)10. the infan‎ts from their‎ elder‎sPart III Readi‎n g Compr‎e hens‎i on (Readi‎n g in Depth‎)Secti‎o n A11. J) 12.G) 13.A) 14.C) 15.E) 16.H) 17.L). 18. N). 19. F) 20. I)Secti‎o n B21----25. B D B C D 26----30. A D D B APart IV Vocab‎u lary‎and Struc‎t ure31----35 C D D A B 36----40 BA DC B 41----45 C D A C A46----50 A A C B C 51----55 D A C A D 56----60 D C C D BPart V Cloze‎61---65. A A A D C 66---70. B A D C D 71---75. C B B C A 76---80. D C C B DPart VI Trans‎l atio‎nSecti‎o n A81. He made some routi‎n e obser‎v atio‎n s upon the unhea‎l thy effec‎t of the night‎breez‎e at that seaso‎n. Then as his gaze reach‎e d out into the darkn‎e ss, hebegan‎to talk.82. His words‎becam‎e a meani‎n gles‎s succe‎s sion‎of verbs‎, nouns‎, adver‎b s, and adjec‎t ives‎; she only drank‎in the tones‎of his voice‎. She wante‎d to reach‎outher hand in the darkn‎e ss and touch‎him---which‎she might‎have done if she had not been a respe‎c tabl‎e woman‎.83. He seate‎d himse‎l f upon the bench‎besid‎e her, witho‎u t a suspi‎c ion that she might‎objec‎t to his prese‎n ce.Secti‎o n B84. 她思绪从未‎这么乱过,就像头顶飞‎着的蝙蝠一‎样,忽东忽西。

4级模拟试题

4级模拟试题

4级模拟试题一、听力理解Section A1. 根据对话,男士为什么迟到了?A) 交通堵塞B) 闹钟没响C) 忘记时间D) 找不到地点2. 女士在对话中提到了什么活动?A) 看电影B) 去图书馆C) 参加派对D) 健身Section B3. 根据短文,哪个部门最近很忙?A) 市场部B) 财务部C) 人力资源部D) 研发部4. 短文中提到的项目预计何时完成?A) 一个月内B) 两个月内C) 三个月内D) 四个月内Section C5. 演讲者在演讲中主要讨论了什么主题?A) 环境保护B) 教育改革C) 科技发展D) 社会公平6. 演讲者提到了哪个国家作为例子?A) 美国B) 中国C) 英国D) 澳大利亚二、阅读理解Passage 1In recent years, the popularity of online education has surged. According to a recent survey, more than half of the students prefer online courses over traditional classroom settings. This trend has been attributed to the flexibility and convenience that online education offers. However, there are also concerns about the quality of education and the lack of interaction between students and teachers.Questions:7. What is the main reason for the surge in online education?A) Cost-effectivenessB) Flexibility and convenienceC) Better quality of educationD) Greater availability of courses8. What is the concern regarding online education?A) Technical difficultiesB) High costC) Quality of educationD) Lack of student participationPassage 2The use of renewable energy sources has been on the rise globally. Governments and private sectors are investing heavily in solar, wind, and hydroelectric power. Despite the initial costs, the long-term benefits of using renewable energy are significant. It not only reduces reliance on fossil fuels but also helps in reducing greenhouse gas emissions.Questions:9. What is the main advantage of renewable energy?A) Low initial costB) Long-term cost savingsC) High energy outputD) Wide availability10. What is the environmental benefit of using renewable energy?A) Increased biodiversityB) Reduced greenhouse gas emissionsC) Improved air qualityD) All of the above三、完形填空The internet has revolutionized the way we communicate and access information. It has made our lives more convenient and has opened up new opportunities for learning and business. However, with the growth of the internet, there are also concerns about privacy and security. It is important to be aware of the potential risks and take necessary precautions to protect our personal information.11. The internet has changed our lives in many ways, making them ______.A) more difficultB) more convenientC) less interestingD) more challenging12. As the internet grows, we need to be ______ about our privacy.A) concernedB) indifferentC) ignorantD) confused四、翻译将下列句子从中文翻译成英文:13. 随着科技的发展,我们的生活变得越来越便利。

英语4级练习题

英语4级练习题

英语4级练习题第一部分:听力理解(共20小题,每小题1分,满分20分)请听下面5段对话。

每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。

听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

1. What does the man want the woman to do?A. Call the post office.B. Pay the phone bill.C. Check the mail.2. What does the woman imply?A. She will put up posters.B. She is not familiar with the poster.C. She will ask someone else for help.3. What will the weather be like tomorrow?A. Rainy.B. Cloudy.C. Sunny.4. What does the man mean?A. He hasn't found his keys yet.B. He will help the woman find her keys.C. The woman can use his keys.5. What is the conversation mainly about?A. Office supplies.B. Work arrangements.C. A new employee.请听下面5段对话或独白。

每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。

听每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。

每段对话或独白读两遍。

听第6段材料,回答第6、7题。

6. Where does the conversation take place?A. In a hotel.B. In a bookstore.C. In a library.7. What does the man need?A. A book about the city.B. A fiction book.C. A guide on local restaurants.听第7段材料,回答第8、9题。

大学英语英语四级练习卷(含答案) (1)

大学英语英语四级练习卷(含答案) (1)

大学英语四级试练习卷一、阅读理解Water problems in the future will become nore intense and more complex. Our increasing population will tremendously increase urbanwastes,primarily sewage. On the other hand, increasing demands for water will decease substantialy the amount of water available for diluting wastes. Rapidly expanding industries which involve more and more complex chemical processes will produce large volumes of liquid wastes, and many of these will contain chemicals which are noxious. To feed our rapidly expanding population, agriculture will have to be intensifieD. This will involve ever-increasingquantities of agricultural chemicals, From this , it is apparent that drastic steps must be taken immediately to develop corrective measures for the pollution problem. There are two ways by which this pollution problem can be dwindleD. The first relates to the treatment of wastes to decrease their pollution hazarD. This involves the processing of solid wastes "prior to " disposal and the treatment of liquid wastes, or efflunets,to permit the reuse of the water or minimize pollution upon final disposal. A second approach is to develop an economic use for all or a part of thewastes. Farm manure is spread in fields as a nutrient or organic supplement . Effluents from sewage disposal plants are used in some areas both for irrigation and for the nutrients containeD. Efflunets from otherprocessing plants may also be used as a supplemental source of water. Many industries, such as meat and poultry processing plants, are currently converting former waste products into marketable byproducts. Other industries are potential eonomic uses for waste products.1.The purpose of this is ______.A.to alert the reader to the dwindling water supplyB.to explain industrial uses of waterC.to acquaint the reader with water pollution problemsD.to demostrate various measures to solve the pollution problem2.Which of the following points is NOT INCLUDED in the ?A.In dustrial development incudes the simplification of complex chemical processes.B.Diluting wastes needs certain amount of waterC.Demands for water will go up along with the expanding populationD.Intensive cultivation of land requires more and more chemicals3.The reader can conclued that________.A.countries of the world will work together on polution problemsB.byproducts from wastes lead to a more prosperous marketplaceC.science is making great progress on increasing water suppliesD.some industries are now ,aking economic use of wastes4.The author gives substance to the through the use of _______.A.interviews with authorities in the field of water controlsB.opinions and personal observationsC.definitions which clarify important termsD.strong arguments and persuasions5.The words "prior to "(para.2) probably mean______.A.afterB.duringC.beforeD.beyond二、完型填空完型填空(一)Most people have no idea of the hard work and worry that goes into the collecting of those fascinating birds and animals that they pay to see in the zoo. One of the questions that is always asked of me is (1) I became an animal collector in the first (2). The answer is that I have always been interested inanimals and zoos. According to my parents, the first word I was able to say with any (3) was not the conventional “mamma”or “daddy”, (4) the word “zoo”, which I would (5) over and over again with a shrill (6) until someone, in groups to (7) me up, would take me to the zoo. When I (8) a little older, welived in Greece and I had a great(9) of pets, ranging from owls to seahorses, and I spent all my sparetime(10) the countryside in search of fresh specimens to (11) to my collection of pets. (12) on I went fora year to the City Zoo, as a student (13) , to get experience of the large animals, such as lions, bears,bison and ostriches, (14) were not easy to keep at home. When I left, I (15) had enough money of myown to be able to (16) my first trip and I have beengoing (17) ever since then. Though a collector's jobis not an easy one and is full of (18), it is certainly a job which will appeal (19) all those who loveanimals and (20) .1.A.how B.where C. when D. whether2.A.region B.field C. place D. case3.A.clarity B.emotion C. sentiment D. affection4.A.except B.but C. except for D. but for5.A.recite B.recognize C. read D. repeat6.A.volume B.noise C. voice D. pitch7.A.close B.shut C. stop D. comfort8.A.grew B.was growing C. grow D. grown9.A.many B.amount C. number D. supply10.A.living B.cultivating C. reclaiming D. exploring11.A.increase B.include C. add D. enrichter B.further C. then D. subsequently13.A.attendant B.keeper C. member D. aide14.A.who B.they C. of which D. which15.A.luckily B.gladly C. nearly D. successfully16.A.pay B.provide C. allow D. finance17.A.normally B.regularly C. usually D. often18.A.expectations B.sorrows C. excitement D. disappointments19.A.for B.with C. to D. from20.A.excursion B.travel C. journey D. Trip完型填空(二)To others and themselves the British have a reputation for being conservative——not in the narrowpolitical sense, but in the sense of adherence to accepted ideas and unwilling to question them.Thereputation comes partly from their 1 .For 900 2 they have suffered 3 invasion nor revolution (except in1649 4 1688) nor disastrous defeat in 5 .Their monarchy (君主政体) survives 6 serious question.Underits normal 7 political arrangements have been 8 stable that, except for the 9 interruptions in theseventeenth 10 , they have been adopted throughout 11 centuries to meet changing needs without violent12 .Britain, in 1978, was 13 in managing without 14 written constitution; some fragmentary definitionsof 1688 still 15 .There had been 16 quarrels, social and economic as well 17 political, but the quarrelshad been 18 , usually 19 compromise.The underlying 20 had not been broken.nguage B.future C.history D.literature2.A.centuries B.years C.minutes D.seconds3.A.neither B.as C.or D.either4.A.too B.but C.or D.and5.A.home B.study C.peace D.war6.A.and B.without C.with D.neither B.people C.leadership D.enemy8.A.so B.very C.too D.such9.A.two B.one C.no D.couple10.A.month B.day C.year D.century11.A.a B.any C.the D.few12.A.changes B.change C.altered D.changedmon B.popular C.unique D.angry14.A.two B.a C.some D.their15.A.survive B.surviving C.survives D.survived16.A.bitter B.happy C.pleasant D.unhappy17.A.for B.as C.to D.at18.A.settling B.settles C.settle D.settled19.A.for B.at C.to D.by20.A.continue B.continuity C.continuous D.continued三、翻译1、所有的窗户都开着,他就睡着了。

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第一章分数练习册(2课时)1、 写出下面各数五分之二、 三分之一、 十分之一、 十七分之八、 二十五分之十、 一百分之六十三、六十分之二十九、 三十六分之二十、 九分之九2、 读出下面各数91、76、65、118、5916、100033、1001003、 用分数表示涂色部分( ) ( ) ( )( ) ( ) ( )( ) ( ) ( )4、适当的部分涂上色表示下面的分数41 85 53 64第二章常见的量的简单换算练习册1、填空1千克=()公斤;1千克=()克;1吨=()千克;1吨=()公斤;7吨=()公斤;8公斤=()克;1000克=()公斤;2000千克=()吨;1分米=()厘米;1厘米=()毫米;1米=()厘米;2公里=()米;6公里=()千米;5米=()分米;6分米=()厘米;1000米=()千米;900厘米=()米;10米=()厘米;200分米=()米;2公里=()分米=()厘米;1小时=()分钟;1分钟=()秒;2小时=()分钟;120秒=()分钟;半分钟=()秒;2小时=()刻钟;15分钟=()刻钟;30分钟=()刻钟;3刻钟=()分钟;2、小红和妈妈一同去超市买东西,她们买了1千克糖、5千克大米、4千克油和2千克青菜。

问他们一共买了多少千克的东西,合多少克?3、4个好朋友合买了16千克的香蕉。

问每个人平均得到香蕉多少千克?和多少克?4、李明买了一袋白糖重500克,买一袋麦乳精重250克,买一袋面包重250克。

问李明采购的重量一共是多少克?合多少千克?5、将一根绳子对折1次后,每份长6厘米。

问这根绳子长多少厘米?6、现有三条绳子,第一条长1米5分米,第二条长2米,第三条长2米6厘米。

问(1)三条绳子一共有多长?(2)第二条比第一条长多少?(3)第二条比第三条短多少?7、一根绳子长72米,现在把它平均分成4等份。

问:(1)需对折几次?(2)1份有多长?2份有多长?3份有多长?8、小红1刻钟能跳绳15次,那么她1分钟能跳绳多少次?9、大毛1分钟能写30个字,他2分钟能写多少个字?他写了300个字用了几分钟?合多少秒?10、动手题:测量一下你的身高、体重,然后进行一下换算吧。

第三章简单的统计图统计表练习册(2课时)1、2003年的春天,我国出现了“非典”疫情,我国人民众志成城,终于战胜了SARS病毒。

下图是北京地区2003年5月新增病人的统计图。

(1)从上图中你能说说“非典”新增病人的变化趋势吗?(2)你能与同学说说产生这种变化趋势的原因吗?2、小红把室内气温的变化画成下面的统计图:(1)小红每隔()时测量一次气温。

(2)这一天从8:00到16:00的低温从总体上说是如何变化的?(3)你还能提出什么问题?3、实践活动:测量身高任务:测量你家人的身高,并绘制条形统计图工具:身高测量仪(或卷尺)第四章简单的估算练习册1、李华家买了两种小家电,豆浆机205元,电锅煲192元,总共付了507元。

李华家付的钱对吗?2、一台电脑4930元,一台空调3109元,买这两种电器大约需多少钱?(估算)3、某粮食加工厂上半年加工大米3720吨,如果每辆卡车运10吨,大约要几次运完?4、一瓶矿泉水1元1角钱,88瓶矿泉水大约卖多少钱?5、一本外语书21元,98本大约多少钱?6、选择题:(1)小明7岁,爷爷的年龄大约是()岁。

A. 30岁B. 45岁 c. 65岁(2 )183比()小得多。

A 185 B129 C1480第五章画图凑数法练习册(4课时)1、一只鸡有一个头2只脚,一只兔有一个头4只脚,如果一个笼子里关着的鸡和兔共有10个头和32只脚,你知道笼子里有几只鸡、有几只兔吗?2、一只鸡有一个头2只脚,一只兔有一个头4只脚,如果一个笼子里关着的鸡和兔共有9个头和28只脚,你知道笼子里有几只鸡、有几只兔吗?3、一辆自行车有2个轮子,一辆三轮车有3个轮子,车棚里放着自行车和三轮车共10辆,数数车轮共有28个,问自行车几辆,三轮车几辆?4、一辆自行车有2个轮子,一辆三轮车有3个轮子,车棚里放着自行车和三轮车共8辆,数数车轮共有20个,问自行车几辆,三轮车几辆?5、一只蛐蛐6条腿,一只蜘蛛8条腿,现有蛐蛐和蜘蛛共8只,共有58条腿,问蛐蛐几只?蜘蛛几只?6、笼中有兔又有鸡,数数腿34,数数头有12,问有几只鸡几只兔?7、笼中有兔又有鸡,数数腿38,数数头有15,问有几只鸡几只兔?8、今有五分和一角的两种汽车票,共8张,总钱数是6角,问每种各几张?9、今有5元和10元的两种纸币,共12张,总钱数是100元,问5元纸币,10元纸币各几张?10、小白兔采蘑菇。

大数底下采3个,小树底下采2个,它9棵树下一共采了21个蘑菇。

问大树、小树各有几棵?第六章列表尝试法练习册(4课时)1、在一次数学考试中规定:做对一道题得5分,做错一道题扣3分,小伟做了10道题共得了34分,请问他做对了多少题?2、在一次数学考试中规定:做对一道题得10分,做错一道题扣5分,小伟做了10道题共得了70分,请问他做对了多少题?3、大毛、二毛、三毛三个人岁数之和是30岁,大毛比二毛大2岁,二毛比三毛大2岁,问他们三个人各多少岁?4、老大、老二、老三兄弟三人的岁数之和为31岁,老大的岁数比老二的岁数大4岁,而且老大的岁数又是老三岁数的2倍,问兄弟三人个几岁?5、10元币和5元币共45张,合计350元,10元币多少张?5元币多少张?6、兄弟两人去钓鱼,共钓了40条,其中弟弟钓的鱼是哥哥的3倍,问两个人各钓了多少条鱼?7、今年弟弟8岁,哥哥14岁,当两个人的年龄之和是48岁时,两个人年龄各多少岁?8、同学们去郊游,中午开饭时,两个学生合用1只饭碗,三个学生合用1只菜碗,五个学生合用1只汤碗。

一共用了93只碗,问一共有多少个学生?9、同学们去郊游,中午开饭时,一个学生用1只饭碗,两个学生合用1只菜碗,五个学生合用1只汤碗。

一共用了68只碗,问一共有多少个学生?10、小明今年5岁,爸爸今年30岁,爷爷今年60岁,当三人年龄之和是110岁的时候,小明、爸爸、爷爷各有多少岁?第七章枚举法练习册(2课时)1、用数字卡片2、3、5,可以组成多少个不同的三位数?2、用数字1、2、3、4可以组成多少个不同的没有重复的两位数?3、用数字0、5、7、8组成的四位数有多少个?4、用数字0、5、7、8组成的三位数有多少个?5、5个茶杯的价钱分别是7角、6角、5角、4角和3角,3个茶杯的价钱分别是8角、7角、5角,如果一个茶杯配一个茶盘,一共可以配成多少种不同价钱的茶具?6、妈妈从家到单位上班,要经过电影院,从家到电影院有2条路,从电影院到单位有4条路,妈妈从家到单位上班有多少种不同的走法?7、用1角、2角和5角的邮票,可以组成多少种不同的邮资?8、现有人民币:5角1张,2角3张,1角6张,如果从中取出6角钱,有多少种不同的取法?9、现有人民币:5元1张,2元4张,1元9张,如果从中取出9元钱,有多少种不同的取法?10、小亮给3个小朋友写信,由于粗心,把信装入信封时都给装错了,结果3个小朋友收到的都不是给自己的信,请问小亮装错的情况共有多少种可能?第八章找规律练习册(2课时)1、先计算下面的前几个算式,找出规律,在继续往下写出算式(写出2个即可)并写出得数:9×9+7=8898×9+6=888987×9+5=88889876×9+4=……2、先计算下面的前几个算式,找出规律,在继续往下写出算式(写出2个即可)并写出得数:1×1=111×11=121111×111=123211111×1111=……3、找出规律,在继续往下写出算式(写出2个即可)并写出得数:19+9×9=100118+98×9=10001117+987×9=1000011116+9876×9=111115+98765×9=……6、观察数列的前面几项,找出规律,写出该数列的第80项来?1234、2341、3412、4123、……7、观察数列的前面几项,找出规律,写出该数列的第59项来?12345、51234、45123、34512、23451、……8、:把写有1到100这100个号码的牌子,写下面那样依次分发给四个人,你知道第52号牌子会落到谁的手里?小明小英小芳小军1 2 3 45 6 7 89 10 11 1213 14 ……9,另一条末端画;……一直照此画下去(见下图),问第六代的共有多少个?第一代第二代第三代10、从1开始,每隔2个数写出一个数,得到一列数,求:(1)这列数的第8个数是多少?(2)这列数的第50个数是多少?第九章平均数初步练习册(2课时)1、哥哥有8块糖,弟弟有4块糖,哥哥给弟弟几块,两人的糖同样多?2、天空中飞来两排大雁,前排16只,后排10只。

前排飞到后排几只,两排的只数才能相等?3、饲养场有两个羊圈,甲圈里羊的只数比乙圈多12只,从甲圈里捉出几只羊放入乙圈后,甲圈和乙圈的羊一样多?4、姐妹两人做纸花,姐姐做50朵,妹妹做30朵,姐姐给妹妹几朵花,两人才能一样多?5、姐妹两人做纸花,姐姐做50朵,妹妹做30朵,姐姐给妹妹几朵花,还比妹妹多2朵?6、两堆西瓜,从第一堆中拿出18个放入第二堆后,还比第二堆多4个。

原来两堆西瓜相差多少个?7、大桶和小桶里一共有48个萝卜,从大桶里取出3个放进小桶里,两桶萝卜的个数相等。

原来小桶里有多少个萝卜?8、农民伯伯要挑两袋西瓜,甲袋有西瓜10个,每个重8千克;乙袋有西瓜8个,每个重6千克,(1)甲袋有西瓜多少千克?(2)乙袋有西瓜多少千克?(3)甲袋比乙袋多多少千克?(4)甲袋拿出几个西瓜放入乙袋,两袋西瓜重量一样多?9、甲乙两筐梨共有18个,从甲筐取3个放入乙筐中,两筐梨个数相同。

原来甲乙两筐各有多少个梨?第十章等量代换法练习册(4课时)=20+求:+=36+=?=?=?3、已知:(见下图)求:一个正方形等于几个圆形?4、已知:(见下图)求:一个正方形等于几个圆形?5、根据图中条件求最大的球的重量是多少克?48克6、一支钢笔的价钱是一支铅笔价钱的3倍。

问买30支铅笔的钱能买多少支钢笔?7、已知:李子、苹果、桃子关系,如下图求:1个桃子的重量等于多少个李子的重量?8、已知:李子、苹果、桃子关系,如下图求:1个桃子的重量等于多少个李子的重量?9、已知:(如下图)求:一个柿子的重量是多少克?10、已知:1个西瓜+1个菠萝=8千克1个西瓜+1串香蕉=9千克1个菠萝+1串香蕉=5千克求:1个西瓜、1个菠萝、1串香蕉各重多少千克?11、假若20只兔子可以换2只羊,9只羊可以换3头猪,8头猪可以换2头牛,那么用5头牛可以换多少只兔子?12、已知:求:一只大白兔的重量等于几只小鸟的重量?第十一章加加减减练习册(4课时)1、甲乙两个数的和是12,差是6,甲乙两个数各是多少?+=9=?=?-=33、下面的等式中,和各代表一个数,那么它们各是多少?+=15-=3++=14+=11=?=?++=12=8求:各代表的数是多少?+=5+=6+=77、鸡+鸭=10只鸡-鸭=4只求:鸡=?鸭=?8、1支钢笔+2本练习本=3元1支钢笔-2本练习本=1元求:1支钢笔多少元?1本练习本多少元?9、有甲、乙、丙三个人,甲和乙的年龄的和是50岁,乙和丙的年龄的和是55岁,甲和丙的年龄是45岁,问甲、乙、丙三个人的年龄各是多少岁?10、米老鼠买了2斤苹果和4斤梨一共用去11元钱,唐老鸭又买了2斤苹果和3斤梨一共用去9元钱,问苹果和梨每斤各是多少元?11、有白、红、黑三色球,白的和红的合在一起一共有10个;红的和黑的合在一起一共有7个;黑的和白的合在一起一共有5个。

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