专升本资料2

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专升本英语资料2.词汇学习

专升本英语资料2.词汇学习
编辑ppt
好吃
delicious, yummy, toothsome, delicate, savory ,
tasty, appetizing, delectable, scrumptious, tasteful…
编辑ppt
趣味法
• romance(浪漫史),
•Moslem(穆斯林),
• logic(逻辑),
Red River Valley
From this valley They say you are going, I shall miss your sweet face And your smile, For they say You are taking the sunshine That brightens our pathway a while.
•英文报 •中英文对照小说 •手机阅读软件(推手) •阅读理解练习 •完型填空练习
•英文网站
编辑ppt
用构词法背单词
•派生(Derivation) 【前缀/后缀】 •合成(Compound) •转换(Conversion) 【词性转变】 •缩略
编辑ppt
派生法
• 前缀:一般不改变原词的词性,只改变其词义。 • 后缀:改变了原词的词性,有时可改变其词义。
Come and sit by my side if you love me, Do not haste to bid me adieu, But remember the Red River Valley, And the girl that has loved you so true. Won' t you think of the valley you' re leaving?

专升本资料成人高考(专科起点升本科)《高等数学(二)》

专升本资料成人高考(专科起点升本科)《高等数学(二)》

2020年全国各类成人高考(专科起点升本科)《高等数学(二)》题库【历年真题+章节题库+模拟试题】
完整版>精研学习䋞>免费试用20%资料
全国547所院校视频及题库资料
考研全套>视频资料>课后答案>往年真题>职称考试
目录
第一部分历年真题
2013年成人高考专科起点升本科《高等数学(二)》真题及详解2012年成人高考专科起点升本科《高等数学(二)》真题及详解2011年成人高考专科起点升本科《高等数学(二)》真题及详解2010年成人高考专科起点升本科《高等数学(二)》真题及详解2009年成人高考专科起点升本科《高等数学(二)》真题及详解第二部分章节题库
第1章极限与连续
第2章一元函数微分学
第3章一元函数积分学
第4章多元函数微分学
第5章概率论初步
第三部分模拟试题
成人高考专科起点升本科《高等数学(二)》模拟试题(一)成人高考专科起点升本科《高等数学(二)》模拟试题(二)。

专升本资料数学必修二

专升本资料数学必修二

专升本资料数学必修二### 专升本资料数学必修二在专升本的数学学习中,必修二的内容主要涵盖了微积分、线性代数、概率论与数理统计等重要数学分支,这些内容对于学生理解数学概念和提升解题能力至关重要。

以下是对这些内容的简要概述:#### 1. 微积分微积分是研究变化率和累积量的数学分支。

在专升本数学必修二中,微积分部分主要包括以下几个方面:- 导数:导数是描述函数在某一点处变化率的工具。

学生需要掌握导数的定义、计算方法以及几何意义。

- 积分:积分用于计算曲线下的面积,是微分的逆运算。

学生需要了解不定积分和定积分的概念及其计算方法。

- 微分方程:微分方程是描述变量之间关系的方程,广泛应用于物理、工程等领域。

学生需要掌握一阶和二阶微分方程的求解方法。

#### 2. 线性代数线性代数是研究向量空间和线性变换的数学分支。

在专升本数学必修二中,线性代数部分主要包括:- 矩阵:矩阵是线性代数中的基本工具,用于表示线性方程组。

学生需要掌握矩阵的运算、行列式计算以及矩阵的逆。

- 向量空间:向量空间是线性代数的核心概念,学生需要理解向量空间的定义、基和维数。

- 线性变换:线性变换是将一个向量空间映射到另一个向量空间的函数。

学生需要掌握线性变换的表示和性质。

#### 3. 概率论与数理统计概率论与数理统计是研究随机现象的数学分支。

在专升本数学必修二中,这部分内容主要包括:- 随机事件:学生需要了解随机事件的定义、概率的计算以及条件概率的概念。

- 随机变量:随机变量是随机现象的数值表示。

学生需要掌握离散型和连续型随机变量的概率分布。

- 统计推断:统计推断是利用样本数据对总体参数进行估计和假设检验的过程。

学生需要了解点估计、区间估计和假设检验的基本方法。

通过系统学习这些内容,学生可以为进一步的数学学习打下坚实的基础,并在专升本考试中取得优异成绩。

同时,这些数学知识在实际应用中也具有广泛的价值,如在数据分析、金融建模等领域都有重要应用。

专升本大学英语2考试题及答案

专升本大学英语2考试题及答案

专升本大学英语2考试题及答案一、阅读理解(共20分,每题4分)阅读下列短文,然后根据短文内容回答问题。

AThe Internet has become an essential part of our daily lives. It has revolutionized the way we communicate, learn, and do business. However, with its benefits come risks. Cybersecurity is a growing concern for individuals and businesses alike. Personal information can be stolen, and financial transactions can be compromised. It is crucial to take precautions to protect our online activities.1. What is the main topic of the passage?A. The benefits of the Internet.B. The risks of the Internet.C. Cybersecurity.D. Online transactions.2. What is considered an essential part of daily life according to the passage?A. Communication.B. The Internet.C. Personal information.D. Financial transactions.3. What is the author's concern regarding the Internet?A. Its speed.B. Its security.C. Its cost.D. Its accessibility.4. What is suggested as a necessary action?A. Ignoring the risks.B. Paying more for better security.C. Taking precautions.D. Avoiding online activities.BVolunteering is a selfless act that can benefit both the volunteer and the community. It allows individuals to give back to society and help those in need. Moreover, volunteering can provide valuable experience and skills that can be useful in one's career. It also fosters a sense of community and belonging. Many organizations are always looking for volunteers to support their causes.5. What is the main idea of the text?A. The drawbacks of volunteering.B. The benefits of volunteering for society.C. The benefits of volunteering for the individual.D. The importance of volunteering.6. What can volunteering provide to an individual?A. Monetary rewards.B. Valuable experience.C. Higher social status.D. Financial security.7. What is one of the outcomes of volunteering?A. A sense of isolation.B. A sense of community.C. A sense of competition.D. A sense of superiority.8. What is often sought by organizations in the text?A. Financial donations.B. Skilled professionals.C. Volunteers.D. Government support.二、词汇与语法(共30分,每题3分)用所给单词的适当形式填空。

专升本知识点汇总2

专升本知识点汇总2

专升本知识点汇总2专升本知识点汇总2一、数学与数理逻辑1.数列与数列求和:常见数列的求和公式,如等差数列、等比数列等;数列的递归与通项公式。

2.集合与常用运算:集合的定义,包括空集、全集等;常用运算:并集、交集、差集等。

3.几何与三角函数:平面几何中的基本概念,如平行、垂直等;常见三角函数的定义与性质。

4.概率与统计:概率的基本概念,如事件、样本空间等;常见统计量的计算,如均值、标准差等。

二、英语1.语法与词汇:常见语法知识点,如时态、语态等;常见单词的拼写、词义辨析等。

2.阅读理解:阅读文章,理解文章中的主旨、细节等;回答问题,推理、引申、判断等。

3.写作:写作技巧,如段落结构、句子结构等;写作题目,如书信、议论文等。

4.听力与口语:听取对话或独白,理解对话内容;进行口语交流,回答问题、表达观点等。

三、政治与历史1.政治理论:马克思主义理论基础,如唯物史观、阶级斗争等;社会主义核心价值观等。

2.行政管理与法律法规:行政管理的基本原则与方法;基本法律法规的掌握及应用,如《宪法》、《刑法》等。

3.中国现代史与世界现代史:中国现代史的重大历史事件、人物等;世界现代史的重大历史事件、人物等。

四、专业课程专业课程的内容会根据不同的专业而有所不同,通常会包括以下方面:1.专业基础知识:专业的基本理论、基本概念等;专业的基本方法、基本技能等。

2.专业实践与应用:专业实践中的实际操作、实际问题等;专业应用中的实际应用、实际案例等。

3.专业发展与前沿:专业的最新研究成果、发展趋势等;专业的相关前沿领域、新兴技术等。

以上仅是专升本考试的一些常见知识点,具体内容还需要根据不同学校和不同专业来确定。

在备考过程中,建议根据自己的实际情况制定个人的学习计划,有针对性地复习相关知识点,并进行大量的练习和模拟考试,以提高自己的应试能力。

另外,多参加辅导班和交流群,与其他考生交流经验和学习方法,也是提高考试成绩的有效途径。

西南大学专升本---《英语二》及答案

西南大学专升本---《英语二》及答案

《英语二》复习资料题目1:Choose the ONE best answer that best completes the sentence. (I was _____ the classroom _____ the head teacher stopped me.)可选答案列表: A.leaving,while B.about to leave, when C.leaving, then D.about to leave, while题目2:Choose the ONE best answer that best completes the sentence. (____is better_____one’s life than_____one’s spirit.)可选答案列表: A.That, lost, you lose B.It, to lose, lose C.This , losing , losing D.It, to lose , to lose题目3:Choose the ONE best answer that best completes the sentence. (Was it in September __________ the team succeeded __________ winning another championship?)可选答案列表: A.when, on B.that, on C.which, in D.that, in题目4:Choose the ONE best answer that best completes the sentence. (??I must apologize for _____ ahead to time.?? That's all right.)可选答案列表: A.letting you not know B.not letting you know C.letting you know not D.letting not you know题目5:Choose the ONE best answer that best completes the sentence. (.It was said___ was all___ boy had said.)可选答案列表: A.that what, what that B.what that, that what C.what what, that that D.that that, that that题目6:Choose the ONE best answer that best completes the sentence. (Excuse me, sir. Could you tell me ______?)可选答案列表: A.where I can find the toilet B.where can I find the toilet C.where do I find the toilet D.the toilet is where题目7:Choose the ONE best answer that best completes the sentence. (?Mr Green has lost Bob’s telephone number.?__________________.)可选答案列表: A.So do I B.So have I C.So I do D.So I have题目8:Choose the ONE best answer that best completes the sentence. (??What did you mean by saying that???I mean no harm.I only____.)可选答案列表: A.meant heping B.want to help C.meant of help D.want helping题目9:Choose the ONE best answer that best completes the sentence. (A big fire _______ in a neighbouring town but it __________ soon.)可选答案列表: A.broke up, put out B.broke down,went out C.broke out, was put down D.broke out, was put out题目10:Choose the ONE best answer that best completes the sentence. (?What made her so disappointed??_______________ the game to her sister.)可选答案列表: A.That she lose B.She lost C.Lost D.Losing题目11:Choose the ONE best answer that best completes the sentence. (---- How often do you eat out?---- ________, but usually once a week.)可选答案列表: A.Have no idea B.It depends C.As usual D.Generally speaking题目12:Choose the ONE best answer that best completes the sentence. ( -What’s the end of the story?-Nome of the five thieves escaped _______.)可选答案列表: A.being punished B.to punish C.punishing D.to be punished题目13:Choose the ONE best answer that best completes the sentence. (He feft a stone____his back.)可选答案列表: A.hitting B.hit C.hitted D.to hit题目14:Choose the ONE best answer that best completes the sentence. (Rather than ______ on a crowded bus ,he always prefers ______ a bicy-cle.)可选答案列表: A.ride,ride B.riding , ride C.ride , to ride D.to ride, ridingenough to raise objections at the meeting.??Well,now I regret ______that.)可选答案列表: A.to do B.to be doing C.to have done D.having done题目16:Choose the ONE best answer that best completes the sentence. (I’d like a pen ______ .) 可选答案列表: A.to write B.to write with C.writhing D.writing with题目17:Choose the ONE best answer that best completes the sentence. (There ____ be a shop near the school, but it has been moved to another place.)可选答案列表: A.are used to ed to C.have D.was题目18:Choose the ONE best answer that best completes the sentence. (The missing boys were last seen ______near the river.)可选答案列表: A.playing B.to be playing C.play D.to play题目19:Choose the ONE best answer that best completes the sentence. (Most of the artists______to the party were from South Africa.)可选答案列表: A.invited B.to invite C.being invited D.had been invited题目20:Choose the ONE best answer that best completes the sentence. (My husband has lost so much weight that he has to wear a belt to ____ his trousers up.)可选答案列表: A.take B.have C.get D.hold题目21:Choose the ONE best answer that best completes the sentence. (??Will you tell us something about the weather there???I_____ to that.)可选答案列表: A.go e C.am going D.am coming题目22:Choose the ONE best answer that best completes the sentence. (He came here at twelve. He______ already ________ his lunch.)可选答案列表: A.would,have B.has,had C.had,had D.have,hadschoolbag.? But didn’t I buy you _____ three months ago?)可选答案列表: A.it B.that C.one D.another题目24:Choose the ONE best answer that best completes the sentence. (The experiment turned out to be a complete failure, _______ wasn’t ______ they wanted.)可选答案列表: A.it, what B.as,that C.which,what D.that, what题目25:Choose the ONE best answer that best completes the sentence. (102. He_____ the 8:30 train because he didn’t leave.)可选答案列表: A.can’t catch B.couldn’t catch C.may not catch D.can’t have caught题目26:Choose the ONE best answer that best completes the sentence. (The people of St.Petersburg said they would do _______ their city.)可选答案列表: A.what they could save B.everything they could to save C.their best saving D.everything what they could to save题目27:Choose the ONE best answer that best completes the sentence. (——I should have gone to the concert with you yesterday.——_______ .)可选答案列表:A.That’s all right. B.Yes, you should C.It doesn’t matter to me D.What a pity题目28:Choose the ONE best answer that best completes the sentence. (I would love _____to the party last night but I had to work extra hours to finish a report.)可选答案列表: A.to go B.to have gone C.going D.to be first playing题目29:Choose the ONE best answer that best completes the sentence. (Unable to ______ ,the patient just shook his head when______.)可选答案列表: A.talk, speaking B.speak, spoken to C.speak, told D.say, speaking题目30:Choose the ONE best answer that best completes the sentence. ( A family can hardly manage_______ 5000 yuan a year.)可选答案列表: A.in B.on C.with D.to题目31:Choose the ONE best answer that best completes the sentence. (The PLA man saved three _______ lives in the accident.)可选答案列表: A.children's B.children C.child D.childs'题目32:Choose the ONE best answer that best completes the sentence. (In Britain today, women ______ 44% of the workforce, and nearly half the mothers with children are in paid work.)可选答案列表: A.take up B.make up C.pick up D.give up题目33:Choose the ONE best answer that best completes the sentence. ( --- Would you please give me a hand and carry the bookcase upstairs?--- ______________________.)可选答案列表: A.With pleasure B.My pleasure C.Go ahead D.It doesn’t matter题目34:Choose the ONE best answer that best completes the sentence. (____ with the new machine, a search party went into the mountains ____ to find gold.)可选答案列表: A.Armed, hoping B.Equipped, hoped C.Fixing,to hope D.Carrying, in the hope题目35:Choose the ONE best answer that best completes the sentence. ( He doesn't tell me when he ______.I'll telephone you as soon as he ______.)可选答案列表:A.will come, comes B.will come, will come comes, will come es, comes题目36:Choose the ONE best answer that best completes the sentence. (English is one if ______ important subjects in our school.)可选答案列表: A.most B.the most C.more D.much more题目37:Choose the ONE best answer that best completes the sentence. (Can you see ______?) 可选答案列表: A.behind the tree girl B.tree behind girl C.girl behind tree D.the girl behind the tree题目38:Choose the ONE best answer that best completes the sentence. (Peter’s birthday is only two weeks _____. What do you have ______?)可选答案列表: A.far,at present B.away, at present C.far, in mind D.away, in mindroom already. It is very clean.)可选答案列表: A.has cleaned B.had cleaned C.is cleaning D.will clean题目40:Choose the ONE best answer that best completes the sentence. (I think the car was invented _______ 1885. )可选答案列表: A.on B.of C.at D.in题目41:Choose the ONE best answer that best completes the sentence. (He comes to see me _______. Which is wrong?)可选答案列表: A.every a few days B.every two days C.every other day D.every second day题目42:Choose the ONE best answer that best completes the sentence. (By the time she got outside, the bus _____. )可选答案列表: A.went B.gone C.has gone D.had gone题目43:Choose the ONE best answer that best completes the sentence. (-- The exam was easy, wasn’t it?--- Y es, but I don’t think _______ could pass it.)可选答案列表: A.somebody B.anybody C.nobody D.everybody题目44:Choose the ONE best answer that best completes the sentence. (The young man was often seen _______by the lake.)可选答案列表: A.to draw B.to drawing C.draw D.drew题目45:Choose the ONE best answer that best completes the sentence. (How many times do you ______ your teeth every day?)可选答案列表: A.brush B.wear C.dress D.wash题目46:Choose the ONE best answer that best completes the sentence. ( Jim works hard on his Chinese and _________.)可选答案列表: A.so Lucy does B.so is Lucy so does Lucy C.so Lucy isher _______.)可选答案列表: A.happily B.angrily C.crying D.angry题目48:Choose the ONE best answer that best completes the sentence. (I often hear the old lady _______ in the next room. Last night while I was reading in bed, I head her _______ badly. )可选答案列表: A.cough, coughing B.coughing, cough C.cough, cough D.coughing, coughing题目49:Choose the ONE best answer that best completes the sentence. (We found the river dangerous _______.)可选答案列表: A.to swim B.to swim in C.swimming D.for us to swim题目50:Choose the ONE best answer that best completes the sentence. (We’ll have a sports meeting if it ______ rain tomorrow.)可选答案列表: A.won't B.isn't C.don't D.doesn't题目51:Choose the ONE best answer that best completes the sentence. (At present, the Chinese government is _________ a great many experts whohave mastered the rules of the W.T.O.)可选答案列表: A.calling on B.calling for C.calling at D.calling up题目52:Choose the ONE best answer that best completes the sentence. (This maths problem is ________that one.)可选答案列表: A.so easy as B.as difficult as C.much difficult than D.less easier than题目53:Choose the ONE best answer that best completes the sentence. (Don't worry! I'm sure you'll ______your classmates if you are kind and friendly to them .)可选答案列表: A.catch up with B.agree with get on well with C.make friend with题目54:Choose the ONE best answer that best completes the sentence. (I still remember I learnt to ____ a bike when I was ten years old.)可选答案列表: A.drive B.operate C.ride D.run题目55:Choose the ONE best answer that best completes the sentence. (______weather it is !)可选答案列表: A.What a fine B.How fine C.What fine D.How fine the题目56:Choose the ONE best answer that best completes the sentence. (?? Do you know ________ last night??? In beijing Hotel.)可选答案列表: A.where Mr Green stayed B.where did Mr Green stay C.what Mr Green did D.what did Mr Green do题目57:Choose the ONE best answer that best completes the sentence. (It's hard _____ a job .) 可选答案列表: A.to look for B.to find C.to find out D.to look at题目58:Choose the ONE best answer that best completes the sentence. (-Y our sister isn’t a nurse .is she ?-________.She teaches English in a middle school.)可选答案列表: A.No, she isn't B.Y es,she is C.Y es .she isn't D.No,she is题目59:Choose the ONE best answer that best completes the sentence. (There is _______park in the centre of the city .)可选答案列表: A.a B.an C.the D./题目60:Choose the ONE best answer that best completes the sentence. (Who was the first one _______?)可选答案列表: A.to reach B.to arrive to get to C.to arrive at题目61:Choose the ONE best answer that best completes the sentence. (Can you see _____ ?) 可选答案列表:A.what he’s reading B.what is he reading C.what does he read D.he reads what题目62:Choose the ONE best answer that best completes the sentence. ( --- How long _____ you _____ the bicycle?--- About two weeks.)可选答案列表: A.have, had B.have, bought C.did, buy D.have, get题目63:Choose the ONE best answer that best completes the sentence. (I ____ to the dinnerparty here, but I've come anyhow.)可选答案列表: A.wasn't inevited B.am not invited C.haven't invited D.will invite题目64:Choose the ONE best answer that best completes the sentence. (? Can you ride a bike? ? No,I ______ .)可选答案列表: A.may not B.can't C.needn't D.mushn't题目65:Choose the ONE best answer that best completes the sentence. ( - How long have you ____the football team of the school?-About two years.)可选答案列表: A.been on B.been at C.joined D.played题目66:Choose the ONE best answer that best completes the sentence. (Shall we meet at the same place ______ we did last Sunday?)可选答案列表: A.when B.that C.as D.where题目67:Choose the ONE best answer that best completes the sentence. (- What a nice garden! - It ___ every day.)可选答案列表: A.is cleaning B.has cleaned C.must clean D.is cleaned.题目68:Choose the ONE best answer that best completes the sentence. (??Do you think I could borrow your dictionary??? ______ .)可选答案列表:A.Y es, you may borrow B.Y es, help yourself C.Y es, you could D.Y es, you go on题目69:Choose the ONE best answer that best completes the sentence. (?? Have you ______ everything ready for the meeting??? Not yet. We need ______ .)可选答案列表: A.got, another three chairs B.got, other three chairs C.prepared, the other three chair D.prepared, three other chairs题目70:Choose the ONE best answer that best completes the sentence. (Would you like some tea ____ shall we start our talk now?)可选答案列表: A.and B.then C.or D.but题目71:Choose the ONE best answer that best completes the sentence. ( Our English teacher comes ______ England.)可选答案列表: A.at B.on C.of D.from题目72:Choose the ONE best answer that best completes the sentence. (I want something to eat.Please give me a ______ .)可选答案列表: A.book B.watch C.shirt D.cake题目73:Choose the ONE best answer that best completes the sentence. (That’s not my bag. ______, this is mine.)可选答案列表: A.Look B.See C.Think D.Ask题目74:Choose the ONE best answer that best completes the sentence. (Don't ________ Chinese in your English class.)可选答案列表: A.say B.tell C.speak D.talk题目75:Choose the ONE best answer that best completes the sentence. (Mike speaks Chinese, _______not much.)可选答案列表: A.so B.and C.or D.but题目76:Choose the ONE best answer that best completes the sentence. (Spaceman Y ang Liwei visited Hong Kong and the people there gave _______ a warm welcome. )可选答案列表: A.he B.she C.him D.her题目77:Choose the ONE best answer that best completes the sentence. ( Are Kate and Ann in ______ rows?)可选答案列表: A.different B.the different C.same D.the same题目78:Choose the ONE best answer that best completes the sentence. (? ______ does your mother work?? In a factory.)可选答案列表: A.Where B.When C.Which D.Who题目79:Choose the ONE best answer that best completes the sentence. ( Which ball is those______?)可选答案列表: A.boys B.boy’s C.boys’ D.boys’s题目80:Choose the ONE best answer that best completes the sentence. (Lily, please find the city of Beijing_______.)可选答案列表: A.on the map B.on the floor C.at home D.in the room题目81:Choose the ONE best answer that best completes the sentence. (It's ten o'clock in the evening. Let's _______.)可选答案列表: A.go to school B.get up C.have lunch D.go to bed题目82:Choose the ONE best answer that best completes the sentence. (_______ are good friends.)可选答案列表: A.Y ou, I and he B.I, you and he C.Y ou, he and I D.I, he and you题目83:Choose the ONE best answer that best completes the sentence. ( ?Can you see my blouse?--Sorry, ______.)可选答案列表: A.I can B.I don’t C.I can’t D.I am not题目84:Choose the ONE best answer that best completes the sentence. (This is _______ ruler.) 可选答案列表: A.my B.mine C.I D.me题目85:Choose the ONE best answer that best completes the sentence. (The bag is too _______.I can't put the pencil -box in.)可选答案列表: A.heavy B.full C.light D.empty题目86:Choose the ONE best answer that best completes the sentence. ("What day is it today?" "It's_______.")可选答案列表: A.cloudy B.7∶00 C.Monday D.October 2题目87:Choose the ONE best answer that best completes the sentence. ( I am _______ duty this week.)可选答案列表: A.in B.at C.on D.for题目88:Choose the ONE best answer that best completes the sentence. (There ______ a table with three legs in Jenny’s room.)可选答案列表: A.is B.are C.has D.have题目89:Choose the ONE best answer that best completes the sentence. ( ---What’s the time now? --- It’s____________.)可选答案列表: A.fifteen past ten B.half to eleven C.twenty past eight D.forty to six题目90:Choose the ONE best answer that best completes the sentence. (Those clothes are ______ Mrs. Green’s clothes line.)可选答案列表: A.in B.on C.at D.of题目91:Choose the ONE best answer that best completes the sentence. ( Look! Li Ping and LiYing _______ volleyball now.)可选答案列表: A.play B.played C.are playing D.will play题目92:Choose the ONE best answer that best completes the sentence. (He is thirsty .Please give him some _______to drink.)可选答案列表: A.rice B.meat C.water D.oranges题目93:Choose the ONE best answer that best completes the sentence. ( the end of last monthwe had learned 5 English songs.)可选答案列表: A.By B.In C.On D.will visit题目94:Choose the ONE best answer that best completes the sentence. (It is hot today,_______it?)可选答案列表: A.is B.does C.isn't D.doesn't题目95:Choose the ONE best answer that best completes the sentence. ("Can you mend a TV set?""No, I_______.")可选答案列表: A.mustn't B.can't C.may not D.needn't题目96:Choose the ONE best answer that best completes the sentence. (-- What’s the _____ like today ?-- Cloudy.)可选答案列表: A.sky B.air nd D.weather题目97:Choose the ONE best answer that best completes the sentence. (? ______ is your sister? ? She’s eleven ye ars old.)可选答案列表: A.How old B.How many C.How much D.How long题目98:Choose the ONE best answer that best completes the sentence. ("Would you like something to drink?""Yes, some_______, please.")可选答案列表: A.tea B.bread C.meat D.fish题目99:Choose the ONE best answer that best completes the sentence. (There are some_______ teachers under those _____ trees.)可选答案列表: A.man, apple B.men, apple C.men, apples D.man, apples题目100:Choose the ONE best answer that best completes the sentence. (_______ shall wemeet?"Tomorrow afternoon. ")可选答案列表: A.What B.Where C.How D.When。

网络考试专升本大学英语二考试复习资料

网络考试专升本大学英语二考试复习资料

网络考试专升本大学英语二考试复习资料网络考试专升本大学英语二考试复习资料单项选择1. The director was critical __ the way we were doing the work.A atB inC ofD with2. In a sudden __ of anger, the man tore up everything within reach.A attackB burstC splitD blast3. __ she realized it was too late to go home.A No sooner it grew dark thanB Hardly did it grow dark thatC Scarcely had it grown dark thanD It was not until dark that4. In Britain people __ four million tons of potatoes every year.A swallowB disposeC consumeD exhaust5. I'd __ his reputation with other farmers and business people in the community, and then make a decision about whether or not to approve a loan.A take into accountB account forC make up forD make out6. She cooked the meat for a long time so as to make it __ enough to eat.A mildB slightC lightD tender7. We take our skin for granted until it is burned __ repair.A beyondB forC withoutD under8. The computer revolution may well change society as __ as did the Industrial Revolution.A certainlyB insignificantlyC fundamentallyD comparatively9. __ in this way, the situation doesn't seem so disappointing.A To look atB Looking atC Looked atD To be looked at10. Some women __ a good salary in a job instead of staying home, but they decided not to work for the sake of the family.A must makeB should have madeC would makeD could have made11. You cannot be __ careful when you drive a car.A veryB tooC soD enough12. Every man in this country has the right to live where he wants to __ the color of his skin.A regardless ofB in the light ofC by virtue ofD with the exception of13. Housewives who do not go out to work feel they are not working to their full __.A strengthB capacityC lengthD possibility14. The old couple decided to __ a boy and a girl though they had three of their own.A adaptB bringC adoptD receive15. The government is trying to do something to __ better understanding between the two countries.A raiseB increaseC heightenD promote16. The newspaper did not mention the __ of the damagecaused by the fire.A extentB levelC rangeD quantity17. The soldier was __ of running away when the enemy attacked.A accusedB chargedC scoldedD punished18. Had he worked harder, he __ the exams.A must have got throughB could get throughC would get throughD would have got through19. It seems oil __ from this pipe for some time. We'll have to take the machine apart to put it right.A had leakedB has been leakingC leakedD is leaking20. When he arrived, he found __ the aged and the sick at home.A nothing butB none otherC none butD no other than21. The pressure __ causes Americans to be energetic, but it also puts them under a constant emotional strain.A competingB to competeC to be competedD having competed22. As teachers we should concern ourselves with what is said, not what we think __.A have to be saidB must sayC ought to be saidD need to say23. Once environmental damage __, it takes many years for the system to recover.A is doneB is to doC doesD has done24. Studies show that the things that contribute most to a sense of happiness cannot be bought, __ a good family life, friendship and work satisfaction.A as forB such asC in case ofD in view of25. He will agree to do what you require __ him.A forB fromC toD or26. The mere fact __ most people believe nuclear war would be madness does not mean that it will not occur.B whichC whatD why27. John seems nice person. __, I don't trust him.A Even thoughB ThereforeC Even soD Though28. I don't think it advisable that Tom __ to the job since he has no experience.A be assignedB will be assignedC is assignedD has been assigned29. __, a man who expresses himself effectively is sure to succeed more rapidly than a man whose command of language is poor.A Other things to be equalB Were other things equalC To be equal to other thingsD Other things being equal30. __ that my head had cleared, my brain was also beginning to work much better.A ForB SinceC NowD Despite31. By 1929, Mickey Mouse was as popular __ children as Coca-Cola.B withC toD in32. Because Edgar was convinced of the accuracy of this fact, he __ his opinion.A stuck toB strove forC stuck atD stood for33. It’s no use __ me not to worry.A you tellB your tellingC for you to have toldD having told34. If it __ too much trouble, I’d love a cup of tea.A isn’tB wasn’tC weren’tD hadn’t been35. She was glad that her success would ___ for the women who would follow.A make things easierB make it easierC be easierD be easier to make36. We object __ punishing a whole group for one person’s fault.A againstB aboutD for37. The newest satellite can __ a thousand telephone conversations and a color TV program at the same time.A carryB extendC bringD take38. The grey building is where the workers live, and the white one is where the spare parts __.A are producingB are producedC producedD being produced39. __ a teacher in a university, it is necessary to have at leasta master's degree.A To becomeB BecomeC One becomeD On becoming40. The little man was __ more than one metre fifty tall.A nearlyB quiteC hardlyD almost参考答案: CBDCA DACCD BABCD AADBCDCABD ACADC BABAC CABAC奕诚教育荆州分校整理提供QQ:1652449936完形填空Directions: There are 20 blanks in the following passage. For each blank there are four choices marked [A], [B], [C]and [D]on the right side of the paper. You should choose the ONE that best fits into the passage. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre.Modern people wear many masks that keep their reality confined and ____41___, even to themselves. The possibility of encountering one’s ____42___, learning about one’s self, is frightening and ____43___. Many people expect ____44___ the worst. A hidden fear ____45___ the fact that they may also discover the best. To discover the worst is to face the decision of ____46___ or not to continue in the same pattern. To learn the best is to face the decision of whether or not to live up ____47___ it. ____48___ discovery may involve change and ____49___ causes anxiety. ____50___ , this can be a creative anxiety which may be thought of as excitement—the excitement of enhancing one’s ____51___ for being a winner. Transactional analysis is a(n) ____52___ you can use to know yourself, to know how you relate to others, and to discover the dramatic ____53___ your life is taking. The unit of personality structure is the ego state. By becoming ____54___ of your ego state, you can ____55___ between your various sources of thoughts, feelings, and behavior pattern. You can be more aware of the choices available to you. The unit of measure in interpersonal relationships is the ____56___. By analyzing your transactions, you can gain a ____57___ conscious control of how you operate with other people and how they operate with you. Transactional analysis is a practical ____58___ from which you can ____59___ old decisions and behavior and change ____60___ you decide is desirable for you to change.41. [A]known [B]unknown [C]surrounded [D]unlimited42. [A]mask [B]armor [C]reality [D]fact43. [A]frustrating [B]exciting [C]interesting [D]encouraging44. [A]discovering [B]to discover [C]be discovered[D]to be discovered45. [A]relies on [B]lies in [C]based on [D]according to46. [A]how [B]why [C]what [D]whether47. [A]to [B]on [C]with [D]in48. [A]Both [B]Either [C]One [D]Neither49. [A]therefore [B]however [C]even [D]but50. [A]Therefore [B]Moreover [C]Then [D]However51. [A]possibility [B]pattern [C]anxiety [D]decision52. [A]instrument [B]appliance [C]equipment [D]tool53. [A]course [B]process [C]track [D]direction54. [A]beware [B]aware [C]awake [D]unconscious55. [A]choose [B]change [C]distinguish [D]compare56. [A]transaction [B]transition [C]transmission[D]transformation57. [A]much [B]more [C]few [D]little58. [A]desire [B]frame [C]stage [D]step59. [A]evaluate [B]change [C]make [D]decide60. [A]which [B]that [C]whether [D]what奕诚教育荆州分校整理提供电话:158********参考答案:BCABB DABAD ADABC ABBAD。

专升本英语二试题及答案

专升本英语二试题及答案

专升本英语二试题及答案一、听力理解(共20分)A节(共10分)根据所听材料,选择正确答案。

1. What is the man going to do this weekend?A. Go to a concert.B. Visit his parents.C. Work on a project.2. Why does the woman suggest taking a taxi?A. To avoid getting lost.B. To save time.C. Because it's cheaper....B节(共10分)听对话或独白,完成信息记录表。

Example:Name: MaryAge: 22Occupation: StudentQuestion:What is Mary's occupation?Answer: Student...二、阅读理解(共30分)A节(共10分)阅读下列短文,从每题所给的四个选项中,选出最佳选项。

Passage 1:The importance of a balanced diet...1. What does the passage mainly discuss?A. The benefits of a balanced diet.B. The types of food to avoid.C. How to prepare a balanced meal.D. The consequences of an unhealthy diet....B节(共20分)阅读下列短文,根据短文内容,回答后面的问题。

Passage 2:The rise of remote working...1. What is the main idea of the passage?2. According to the passage, what are the advantages of remote working?3. What challenges does remote working face?...三、词汇与语法(共20分)A节(共10分)根据句子的意思,从所给选项中选择最合适的词汇填空。

专升本计算机复习资料第二章计算机组成原理

专升本计算机复习资料第二章计算机组成原理

第二章计算机组成原理(一)一、选择题[1] .在公共场所(如宾馆)安装的多媒体计算机上,一般使用____________ 替代鼠标器作为输入设备。

A .操纵杆 B.触摸屏 C.触摸板 D.笔输入[2] .Pentium处理器中包含了一组_________ ,用于临时存放参加运算的数据和运算得到的中间结果。

A. 控制器B.寄存器C.整数ALUD.ROM[3] .下列关于USB接口的叙述中,错误的是___________ 。

A. USB2.0是一种高速的串行接口B符合即插即用规范,连接的设备不用关机就可以拔插C.一个USB接口通过扩展可以连接多个设备D.鼠标器这样的慢速设备,不能使用USB接口[4] .若台式PC机需要插接网卡,则网卡应插入到PC机主板上的__________ 内。

A. 内存插槽B. PCI总线扩展槽C.AGP插槽D.IDE插槽[5] .PC机开机启动时所执行的一组指令是永久性地存放在____________ 中的。

A. CPUB.硬盘C.ROMD.RAM[6] .关于针式打印机的术语中,24针是指________ 。

A. 24X 24点针B.信号线插头上有24针C.打印机内有.24 X 24根针D.打印头内有24根针[7] .关于PC机主板上的CMOS芯片,下面说法中正确的是______________ 。

A. CMOS芯片用于存储计算机系统的配置参数,它是只读存储器B. CMOS芯片用于存储加电自检程序C. CMOS芯片用于存储BIOS,是易失性的D. CMOS芯片需要一个电池给它供电,否则其中的数据在主机断电时会丢失[8] .下面是关于PC机CPU的若干叙述:①CPU中包含几十个甚至上百个寄存器,用来临时存放数据和运算结果;②CPU是PC机中不可缺少的组成部分,它担负着运行系统软件和应用软件的任务;③CPU的速度比主存储器低得多,使用高速缓存(cache)可以显著提高CPU的速度;④PC机中只有1个微处理器,它就是CPU。

专升本政治必修二复习资料

专升本政治必修二复习资料

专升本政治必修二复习资料# 专升本政治必修二复习资料## 第一章:马克思主义哲学基础### 1.1 马克思主义哲学的产生与发展- 历史背景:19世纪中叶,资本主义社会矛盾激化,工人阶级觉醒。

- 理论来源:德国古典哲学、英国古典政治经济学、法国空想社会主义。

- 主要贡献者:马克思、恩格斯。

### 1.2 马克思主义哲学的基本特征- 唯物主义:物质是世界的本原,意识是物质的反映。

- 辩证法:事物的发展是矛盾的统一,是量变到质变的过程。

- 历史唯物主义:社会存在决定社会意识,生产力决定生产关系。

### 1.3 马克思主义哲学的实践意义- 指导作用:为无产阶级革命提供理论武器。

- 发展动力:推动社会进步和人类文明发展。

## 第二章:政治经济学原理### 2.1 商品与货币- 商品:用于交换的劳动产品,具有使用价值和价值。

- 货币:一般等价物,是商品交换的媒介。

### 2.2 资本与剩余价值- 资本:能够带来剩余价值的价值。

- 剩余价值:资本家从工人的剩余劳动中获取的额外价值。

### 2.3 资本主义经济危机- 危机根源:生产过剩与消费不足的矛盾。

- 危机表现:经济衰退、失业率上升。

## 第三章:科学社会主义理论### 3.1 社会主义的产生与发展- 历史条件:资本主义社会矛盾的激化。

- 理论基础:马克思主义哲学和政治经济学。

### 3.2 社会主义基本特征- 公有制:生产资料归全体人民所有。

- 计划经济:国家对经济进行计划和调节。

### 3.3 社会主义建设的基本原则- 发展生产力:提高社会生产力,满足人民日益增长的物质文化需要。

- 民主政治:实现人民民主,保障人民权利。

## 第四章:中国特色社会主义理论体系### 4.1 中国特色社会主义的形成与发展- 改革开放:1978年,中国开始实行改革开放政策。

- 理论创新:结合中国实际情况,发展马克思主义。

### 4.2 中国特色社会主义的基本特征- 社会主义市场经济:在坚持社会主义基本制度的前提下,发展市场经济。

专升本英语-2.名词性从句

专升本英语-2.名词性从句

2.注意点
1).主语从句一律用陈述句语序,即主语在前,谓 语在后.
例: 正: When he will come is not known. 误: When will he come is not known.
2).连接词that在从句中无实际意义,但不能省略.
例: 正: That he will not come to the meeting this evening is true.
ownership fairer. (4).It is not yet decided which cash crop(经济作 物) will be produced next year. (5).Whatever he said was right. (6).Whoever go there must get ready by 6 o’clock.
误: He will not come to the meeting this evening is true.
4).为避免主语冗长,句子头重脚轻,经常用it作形 式主语,主语从句放在后面作真正的主语.
It is well known/reported/thought/said/…that… It is clear/necessary/certain/doubtful/…that… It is a pity/a shame/an honour/… that… It doesn’t matter whether…/It seems that… It happens that…
正: The reason why he was late this
morning is that there was a lot of traffic on

江西专升本考试计算机基础参考资料2

江西专升本考试计算机基础参考资料2
A、0和1 B、1和1 C、0和0 D、1和0 B- H1 E- Q: V% i
111.汉字字形码的使用是在( )。
- }8 p) c# B" J; oA、输入时 B、内部传送时 C、输出时 D、两台计算机之间交换信息时 C s/ {1 u* R1 i4 d
C、行大量的图形交互操作 D、具有良好的实时性和高可靠性 B D: a0 I# X, v
123.在计算机应用中,“MIS”表示( )。 5 i* Y" j: e5 X5 `. R* B2 x0 \
A、决策支持系统 B、管理信息系统 C、办公自动化 D、人工智能 B) p1 T+ S0 R$ I+ a0 i' G7 X
% O, Q3 Z. S, Q/ q108.下列字符中,ASCII码值最小的是( )。
/ O! l( d) o* G$ B2 IA、M B、3 C、y D、b B
, s! @) |; P/ J5 \" o8 [7 G9 ?6 K# M109.一片1.44MB的软盘可以存储大约140万个( )。
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2山东专升本高等数学第二章导数与微分

2山东专升本高等数学第二章导数与微分

第二章 导数与微分【考试要求】1.理解导数的概念及其几何意义,了解可导性与连续性的关系,会用定义求函数在一点处的导数.2.会求曲线上一点处的切线方程与法线方程.3.熟练掌握导数的基本公式、四则运算法则以及复合函数的求导方法.4.掌握隐函数的求导法、对数求导法以及由参数方程所确定的函数的求导方法,会求分段函数的导数.5.理解高阶导数的概念,会求简单函数的n 阶导数.6.理解函数的微分概念,掌握微分法则,了解可微与可导的关系,会求函数的一阶微分.【考试内容】一、导数(一)导数的相关概念1.函数在一点处的导数的定义设函数()yf x =在点0x 的某个邻域内有定义,当自变量x 在0x 处取得增量x ∆(点0x x +∆仍在该邻域内)时,相应的函数取得增量00()()y f x x f x ∆=+∆-;如果y ∆与x ∆之比当0x ∆→时的极限存在,则称函数()y f x =在点0x 处可导,并称这个极限为函数()yf x =在点0x 处的导数,记为0()f x ',即00000()()()limlimx x f x x f x yf x x x∆→∆→+∆-∆'==∆∆, 也可记作0x x y =',x x dydx=或()x x df x dx=.说明:导数的定义式可取不同的形式,常见的有0000()()()limh f x h f x f x h→+-'=和000()()()limx x f x f x f x x x →-'=- ;式中的h 即自变量的增量x ∆.2.导函数上述定义是函数在一点处可导.如果函数()y f x =在开区间I 内的每点处都可导,就称函数()f x 在区间I 内可导.这时,对于任一x I ∈,都对应着()f x 的一个确定的导数值,这样就构成了一个新的函数,这个函数就叫做原来函数()y f x =的导函数,记作y ',()f x ',dy dx 或()df x dx.显然,函数()f x 在点0x 处的导数0()f x '就是导函数()f x '在点0x x =处的函数值,即00()()x x f x f x =''=.3.单侧导数(即左右导数)根据函数()f x 在点0x 处的导数的定义,导数0000()()()limh f x h f x f x h→+-'=是一个极限,而极限存在的充分必要条件是左右极限都存在并且相等,因此0()f x '存在(即()f x 在点0x 处可导)的充分必要条件是左右极限 000()()lim h f x h f x h-→+- 及000()()lim h f x h f x h+→+- 都存在且相等.这两个极限分别称为函数()f x 在点0x 处的左导数和右导数,记作0()f x -'和0()f x +',即0000()()()lim h f x h f x f x h--→+-'=,0000()()()lim h f x h f x f x h++→+-'=.现在可以说,函数()f x 在点0x 处可导的充分必要条件是左导数0()f x -'和右导数0()f x +'都存在并且相等.说明:如果函数()f x 在开区间(,)a b 内可导,且()f a +'及()f b -'都存在,就说()f x 在闭区间[,]a b 上可导. 4.导数的几何意义函数()y f x =在点0x 处的导数0()f x '在几何上表示曲线()y f x =在点00(,())M x f x 处的切线的斜率,即0()tan f x α'=,其中α是切线的倾角.如果()y f x =在点0x 处的导数为无穷大,这时曲线()y f x =的割线以垂直于x 轴的直线0x x =为极限位置,即曲线()y f x =在点00(,())M x f x 处具有垂直于x 轴的切线0x x =.根据导数的几何意义及直线的点斜式方程,可得曲线()y f x =在点00(,)M x y 处的切线方程和法线方程分别为: 切线方程:000()()y y f x x x '-=-;法线方程:0001()()y y x x f x -=--'. 5.函数可导性与连续性的关系 如果函数()y f x =在点0x 处可导,则()f x 在点0x 处必连续,但反之不一定成立,即函数()yf x =在点0x 处连续,它在该点不一定可导.(二)基本求导法则与导数公式1.常数和基本初等函数的导数公式(1)()0C '= ; (2)1()xx μμμ-'= ;(3)(sin )cos x x '= ; (4)(cos )sin x x '=- ;(5)2(tan )secx x '= ; (6)(cot )csc x x '=- ;(7)(sec )sec tan x x x '= ; (8)(csc )csc cot x x x '=- ;(9)()ln xx aa a '= ; (10)()x x e e '= ;(11)1(log )ln a x x a '= ; (12)1(ln )x x'= ;(13)(arcsin )x '=; (14)(arccos )x '= ;(15)21(arctan )1x x '=+ ; (16)21(arccot )1x x'=-+ . 2.函数的和、差、积、商的求导法则设函数()uu x =,()v v x =都可导,则(1)()u v u v '''±=± ; (2)()Cu Cu ''=(C 是常数); (3)()uv u v uv '''=+ ;(4)2()u u v uv v v''-'= (0v ≠). 3.复合函数的求导法则 设()yf u =,而()ug x =且()f u 及()g x 都可导,则复合函数[()]y f g x =的导数为dy dy dudx du dx=⋅ 或 ()()()y x f u g x '''=⋅. (三)高阶导数1.定义一般的,函数()yf x =的导数()y f x ''=仍然是x 的函数.我们把()y f x ''=的导数叫做函数()y f x =的二阶导数,记作y ''或22d ydx ,即()y y ''''=或22d y d dy dx dx dx ⎛⎫= ⎪⎝⎭.相应地,把()y f x =的导数()f x '叫做函数()y f x =的一阶导数.类似地,二阶导数的导数叫做三阶导数,三阶导数的导数叫做四阶导数,,一般的,(1)n -阶导数的导数叫做n 阶导数,分别记作y ''',(4)y ,,()n y 或33d y dx ,44d ydx ,,n nd ydx. 函数()yf x =具有n 阶导数,也常说成函数()f x 为n 阶可导.如果函数()f x 在点x 处具有n 阶导数,那么()f x 在点x 的某一邻域内必定具有一切低于n 阶的导数.二阶及二阶以上的导数统称为高阶导数.(四)隐函数的导数函数的对应法则由方程(,)0F x y =所确定,即如果方程(,)0F x y =确定了一个函数关系()y f x =,则称()y f x =是由方程(,)0F x y =所确定的隐函数形式.隐函数的求导方法主要有以下两种:1.方程两边对x 求导,求导时要把y 看作中间变量.例如:求由方程0yexy e +-=所确定的隐函数的导数dy dx. 解:方程两边分别对x 求导,()(0)yx x exy e ''+-= ,得0ydy dy e y x dx dx ++= , 从而 ydy y dx x e =-+.2.一元隐函数存在定理x y F dydx F '=-'. 例如:求由方程0yexy e +-=所确定的隐函数的导数dydx. 解:设(,)y F x y e xy e =+-,则()()yx yy y e xy e F dy yx dx F e x e xy e y∂+-'∂=-=-=-∂'++-∂ . (五)由参数方程所确定的函数的导数一般地,若参数方程()()x t y t ϕφ=⎧⎨=⎩ 确定y 是x 的函数,则称此函数关系所表达的函数为由该参数方程所确定的函数,其导数为()()dy t dx t φϕ'=',上式也可写成 dy dy dt dxdx dt=.其二阶导函数公式为223()()()()()d y t t t t dx t φϕφϕϕ''''''-=' . (六)幂指函数的导数一般地,对于形如()()v x u x (()0u x >,()1u x ≠)的函数,通常称为幂指函数.对于幂指函数的导数,通常有以下两种方法: 1.复合函数求导法将幂指函数()()v x u x 利用指数函数和对数函数的性质化为()ln ()v x u x e的形式,然后利用复合函数求导法进行求导,最后再把结果中的()ln ()v x u x e 恢复为()()v x u x 的形式.例如:求幂指函数xy x =的导数dydx.解:因ln x x x x e = ,故()ln ln (ln )(1ln )x xx x x dy d e e x x x x dx dx'==⋅=+. 2.对数求导法对原函数两边取自然对数,然后看成隐函数来求y 对x 的导数.例如:求幂指函数x y x =的导数dy dx. 解:对幂指函数x y x =两边取对数,得 ln ln y x x =,该式两边对x 求导,其中y 是x的函数,得11ln dy x y dx ⋅=+,故 (1ln )(1ln )x dy y x x x dx=+=+. 二、函数的微分1.定义:可导函数()y f x =在点0x 处的微分为00()x x dyf x dx ='= ;可导函数()y f x =在任意一点x 处的微分为()dy f x dx '=.2.可导与可微的关系函数()yf x =在点x 处可微的充分必要条件是()y f x =在点x 处可导,即可微必可导,可导必可微. 3.基本初等函数的微分公式 (1)()0d C dx = ; (2)1()d x x dx μμμ-= ;(3)(sin )cos d x xdx = ; (4)(cos )sin d x xdx =- ;(5)2(tan )sec d x xdx = ; (6)(cot )csc d x xdx =- ; (7)(sec )sec tan d x x xdx = ; (8)(csc )csc cot d x x xdx =- ;(9)()ln xx d aa adx = ; (10)()x x d e e dx = ;(11)1(log )ln ad x dx x a =; (12)1(ln )d x dx x = ;(13)(arcsin )d x dx =; (14)(arccos )d x = ;(15)21(arctan )1d x dx x =+ ; (16)21(arccot )1d x dx x=-+ . 4.函数和、差、积、商的微分法则设函数()u u x =,()v v x =都可导,则(1)()d uv du dv ±=± ;(2)()d Cu Cdu =(C 是常数);(3)()d uv vdu udv =+ ;(4)2()u vdu udvd v v-= (0v ≠). 5.复合函数的微分法则设()y f u =及()u g x =都可导,则复合函数[()]y f g x =的微分为()()x dy y dx f u g x dx'''==.由于()g x dx du '=,所以复合函数[()]y f g x =的微分公式也可写成()dyf u du '= 或 udy y du '=. 由此可见,无论u 是自变量还是中间变量,微分形式()dyf u du '=保持不变.这一性质称为微分形式的不变性.该性质表明,当变换自变量时,微分形式()dy f u du '=并不改变.【典型例题】【例2-1】以下各题中均假定0()f x '存在,指出A 表示什么.1.000()()limx f x x f x A x∆→-∆-=∆.解:根据导数的定义式,因0x ∆→时,0x -∆→,故0000000()()()()lim lim ()x x f x x f x f x x f x f x x x∆→∆→-∆--∆-'=-=-∆-∆, 即0()A f x '=-.2.设0()limx f x A x→=,其中(0)0f =,且(0)f '存在. 解:因(0)0f =,且(0)f '存在,故00()()(0)lim lim (0)0x x f x f x f f x x →→-'==-,即(0)A f '=. 3.000()()limh f x h f x h A h→+--=.解:根据导数的定义式,因0h →时,0h -→,故00000000()()()()()()lim limh h f x h f x h f x h f x f x f x h h h →→+--+-+--= 00000()()[()()]limh f x h f x f x h f x h→+----=000000()()()()lim limh h f x h f x f x h f x h h→→+---=+- 000()()2()f x f x f x '''=+=,即 02()A f x '=.【例2-2】分段函数在分界点处的导数问题.1.讨论函数322,1()3,1x x f x x x ⎧≤⎪=⎨⎪>⎩ 在1x =处的可导性.解:根据导数的定义式,3211122()(1)233(1)lim lim lim(1)2113x x x x f x f f x x x x ----→→→--'===++=--,2112()(1)3(1)lim lim11x x x f x f f x x +++→→--'===+∞--,故()f x 在1x =处的左导数(1)2f -'=,右导数不存在,所以()f x 在1x =处不可导.2.讨论函数21sin ,0()0,0x x f x xx ⎧≠⎪=⎨⎪=⎩ 在0x =处的可导性. 解:因20001sin 0()(0)1(0)lim lim lim sin 00x x x x f x f x f x x x x →→→--'====-, 故函数()f x 在0x =处可导.3.已知函数2,1(),1x x f x ax b x ⎧≤=⎨+>⎩ 在1x =处连续且可导,求常数a 和b 的值.解:由连续性,因(1)1f =,211(1)lim ()lim 1x x f f x x ---→→===,11(1)lim ()lim()x x f f x ax b a b +++→→==+=+,从而1a b +=①再由可导性,2111()(1)1(1)lim lim lim(1)211x x x f x f x f x x x ----→→→--'===+=--,11()(1)1(1)lim lim 11x x f x f ax b f x x +++→→-+-'==--,而由①可得1b a =-,代入(1)f +',得11()(1)(1)lim lim 11x x f x f ax a f a x x +++→→--'===--,再由(1)(1)f f -+''=可得2a =,代入①式得1b =-.【例2-3】已知sin ,0(),0x x f x x x <⎧=⎨≥⎩ ,求()f x '. 解:当0x <时,()(sin )cos fx x x ''==,当0x ≥时,()()1f x x ''==,当0x =时的导数需要用导数的定义来求.0()(0)sin (0)lim lim 10x x f x f x f x x---→→-'===-,00()(0)0(0)lim lim 10x x f x f x f x x+++→→--'===-,(0)(0)1f f -+''==,故 (0)1f '=,从而cos ,0()1,0x x f x x <⎧'=⎨≥⎩ . 【例2-4】求下列函数的导数. 1.(sin cos )x ye x x =+.解:()(sin cos )(sin cos )x x y e x x e x x '''=+++ (sin cos )(cos sin )x x e x x e x x =++-2cos x e x =.2.22sin1x y x =+.解:222222sin cos 111x x x y x x x ''⎛⎫⎛⎫'==⋅ ⎪ ⎪+++⎝⎭⎝⎭2222222(1)(2)cos 1(1)x x x x x +-=⋅++22222(1)2cos (1)1x xx x -=++.3.ln cos()x ye =. 解:1ln cos()cos()cos()xxx y e e e '''⎡⎤⎡⎤==⋅⎣⎦⎣⎦ 1sin()()cos()x xx e e e '⎡⎤=⋅-⋅⎣⎦1sin()cos()x x x e e e ⎡⎤=⋅-⋅⎣⎦ tan()x x e e =-.4.ln(yx =+.解:ln((y x x '⎡⎤''=+=⋅+⎣⎦21⎡⎤'=+⎢⎣1⎡⎤=+⎢⎣==.【例2-5】求下列幂指函数的导数. 1.sin x yx = (0x >). 解:sin sin ln sin ln ()()(sin ln )x x x x x y x e e x x ''''===⋅sin ln 1(cos ln sin )x xex x x x=⋅+⋅sin sin (cos ln )x xx x x x=+. 说明:本题也可采用对数求导法,即:对幂指函数sin x y x =两边取对数,得ln sin ln y x x =,该式两边对x 求导,其中y 是x 的函数,得11cos ln sin y x x x y x'⋅=+⋅, 故1(cos ln sin )y y x x x x '=+⋅sin sin (cos ln )xx x x x x=+.2.1xx yx ⎛⎫= ⎪+⎝⎭(0x >).解:ln ln 11ln 11x x x x x xx x x y e e x x x ++'''⎡⎤⎡⎤⎛⎫⎛⎫'===⋅⎢⎥ ⎪ ⎪⎢⎥++⎝⎭⎝⎭⎢⎥⎣⎦⎣⎦ln11ln 11xx xx x x ex xx x +⎡⎤'+⎛⎫⎢⎥=⋅+⋅⋅ ⎪++⎢⎥⎝⎭⎣⎦()ln1211ln 11x x xx x x x ex x x x +⎡⎤++-=⋅+⋅⋅⎢⎥++⎢⎥⎣⎦1ln 111xx x x x x ⎛⎫⎛⎫=+ ⎪ ⎪+++⎝⎭⎝⎭.说明:本题也可采用对数求导法,即:对幂指函数1xx y x ⎛⎫= ⎪+⎝⎭两边取对数,得ln ln 1xy x x=+,该式两边对x 求导,其中y 是x 的函数,得 111ln ln 1111x x x x y x y x x x x x'+⎛⎫'⋅=+⋅⋅=+ ⎪++++⎝⎭ , 故11ln ln 11111xx x x y y x x x x x ⎛⎫⎛⎫⎛⎫'=+=+ ⎪ ⎪ ⎪+++++⎝⎭⎝⎭⎝⎭.【例2-6】用对数求导法求下列函数的导数. 1.xy yx = (0x >). 解:等式两边取对数,得ln ln x y y x =,两边对x 求导,注意y 是x 的函数,得ln ln x y y y y x y x ''+⋅=+ ,整理得 (ln )ln x yx y y y x'-=-, 则22ln ln ln ln yyy xy y x y xx xy x x y --'==-- . 2.y =.解:等式两边取对数,得21ln lnln 2y ==,即 2212ln ln(1)ln(2)5y x x =+-+,也即 2210ln 5ln(1)ln(2)y x x =+-+,两边对x 求导,注意y 是x 的函数,得221010212x x y y x x '=-++ ,故222210*********y x x x x y x x x x ⎛⎫⎛'=-=- ⎪ ++++⎝⎭⎝.【例2-7】求下列抽象函数的导数. 1.已知函数()yf x =可导,求函数1sin ()xy f e=的导数dy dx. 解:111sin sin sin ()()()x x x dy d f e f e e dx dx ⎡⎤'==⋅⎢⎥⎣⎦11sin sin 1()()sin x x f e e x '=⋅⋅1111sin sin sin sin 22cos cos ()()sin sin xxx x x x f e ee f e x x-=⋅⋅=- . 2.设函数()f x 和()g x 可导,且22()()0f xg x +≠,试求函数y =dy dx. 解:22()()f x g x dy d dx dx'⎡⎤+==''''==.【例2-8】求由下列方程所确定的隐函数()y y x =的导数.1.220xxy y -+=.解:方程两边分别对x 求导,得 220dy dyx y x y dx dx--⋅+⋅=, 整理得 (2)2dyx y x y dx-=-,故22dy x y dx x y -=- . 说明:此题也可用隐函数存在定理来求解,即:设22(,)F x y x xy y =-+,则2222x y F dy x y x ydx F x y x y '--=-=-='-+- . 2.1y yxe =+.解:方程两边分别对x 求导,得0y y dy dye xe dx dx=++⋅, 整理的 (1)yy dy xe e dx-=,故1yy dy e dx xe =- .说明:此题也可用隐函数存在定理来求解,即:设(,)1y F x y xe y =+-,则11y yx y yy F dy e e dx F xe xe'=-=-='-- . 【例2-9】求由下列参数方程所确定的函数()yy x =的导数.1.2t tx e y e-⎧=⎨=⎩ .解:()()21222t t t t t dye dy e dt dx dx e e e dt --'-====-' .2.111x t t y t ⎧=⎪⎪+⎨⎪=⎪+⎩.解:()()2211111111t t t dy t dy t dt dx dx dt t t '+-⎛⎫ ⎪++⎝⎭====--'⎛⎫ ⎪++⎝⎭.【例2-10】求下列函数的微分. 1.22()tan (12)f x x =+.解:因22222()tan (12)2tan(12)sec (12)4f x x x x x ''⎡⎤=+=+⋅+⋅⎣⎦, 故222()8tan(12)sec (12)dy f x dx x x x dx '==++.2.()f x =.解:因()()f x ''==⋅=,故()dy f x dx '==.3.2()arctan f x x =解:因(22()arctan 211f x x x x x ''==++-,故2()2arctan dy f x dx x dx ⎡'==+⎢⎣.4.22()sin ln(1)f x x x =+.解:因222222()sin ln(1)2sin cos ln(1)sin 1x f x x x x x x x x''⎡⎤=+=++⎣⎦+, 故 2222sin ()sin 2ln(1)1x x dy f x dx x x dx x ⎡⎤'==++⎢⎥+⎣⎦. 【例2-11】求曲线x y xe -=在点(0,1)处的切线方程和法线方程.解:()x x x y xe e xe ---''==-,01x y ='=,故曲线在点(0,1)处的切线方程为11(0)y x -=⋅-,即10x y -+=;法线方程为11(0)y x -=-⋅-即10x y +-=.【例2-12】求曲线224xxy y ++=在点(2,2)-处的切线方程和法线方程.解:这是由隐函数所确定的曲线,按隐函数求导数,有220x y xy y y ''+++⋅=,即22x y y x y+'=-+ ;由导数的几何意义,曲线在点(2,2)-处的斜率为2222212x x y y x y y x y===-=-+'=-=+,故曲线在点(2,2)-处的切线方程为21(2)y x +=⋅-,即 40x y --=;法线方程为 21(2)y x +=-⋅-,即0x y +=.【例2-13】求椭圆2cos 4sin x t y t=⎧⎨=⎩在点4t π=处的切线方程和法线方程.解:将4t π=代入椭圆方程,得曲线上对应的点为,又4cos 2cot 2sin t t y ty t x t''===-'-,切线斜率为 442cot 2t t y tππ=='=-=-,故所求切线方程为2(y x -=--,即20x y +-=;所求法线方程为1(2y x -=--,即20x y +-=.【历年真题】一、选择题1.(2010年,1分)已知(1)1f '=,则0(12)(1)limx f x f x∆→-∆-∆等于( )(A )1 (B )1- (C )2 (D )2- 解:根据导数的定义,00(12)(1)[1(2)](1)lim2lim2x x f x f f x f x x∆→∆→-∆-+-∆-=-∆-∆ 2(1)2f '=-=-,选(D ).2.(2010年,1分)曲线2y x =在点(1,1)处的法线方程为( )(A )y x = (B )322x y =-+(C )322x y=+ (D )322x y =--解:根据导数的几何意义,切线的斜率1122x x k y x=='===,故法线方程为11(1)2y x -=--,即 322x y =-+,选(B ). 3.(2010年,1分)设函数()f x 在点0x 处不连续,则( )(A )0()f x '存在 (B )0()f x '不存在(C )lim()x f x →∞必存在 (D )()f x 在点0x 处可微解:根据“可导必连续”,则“不连续一定不可导”,选项(B )正确.4.(2009年,1分)若000()()lim h f x h f x h A h→+--=,则A =( )(A )0()f x ' (B )02()f x ' (C )0 (D )01()2f x ' 解:000()()lim h f x h f x h A h→+--=00000()()[()()]limh f x h f x f x h f x h→+----=000000()()()()lim limh h f x h f x f x h f x h h→→+---=+- 000()()2()f x f x f x '''=+=,选项(B )正确.5.(2008年,3分)函数()f x x =,在点0x =处()f x ( )(A )可导 (B )间断 (C )连续不可导 (D )连续可导 解:由()f x x =的图象可知,()f x 在点0x =处连续但不可导,选项(C )正确.说明:()f x x =的连续性和可导性,也可根据连续和导数的定义推得.6.(2008年,3分)设()f x 在0x 处可导,且0()0f x '≠,则0()f x '不等于( )(A )000()()limx x f x f x x x →-- (B )000()()lim x f x x f x x∆→+∆-∆(C )000()()lim x f x x f x x∆→-∆-∆ (D )000()()lim ()x f x x f x x ∆→-∆--∆解:根据导数的定义,选项(C )符合题意. 7.(2007年,3分)下列选项中可作为函数()f x 在点0x 处的导数定义的选项是( )(A )001lim [()()]n n f x f x n →∞+-(B )000()()lim x x f x f x x x →--(C )000()()lim x f x x f x x x ∆→+∆--∆∆(D )000(3)()lim x f x x f x x x∆→+∆-+∆∆解:选项(A )000001()()1lim [()()]lim()1n n f x f x n n f x f x f x nn+→∞→∞+-'+-==,选项(C )0000()()lim2()x f x x f x x f x x∆→+∆--∆'=∆,选项(D )0000(3)()lim 2()x f x x f x x f x x∆→+∆-+∆'=∆,故选(B ). 8.(2007年,3分)若()f u 可导,且(2)x y f =,则dy =( )(A )(2)x f dx ' (B )(2)2x x f d ' (C )[(2)]2x x fd ' (D )(2)2x x f dx '解:因(2)(2)2(2)2ln 2x x x x x dydf f d f dx ''===,故选项(B )正确.9.(2006年,2分)设()u x ,()v x 为可导函数,则()ud v=( ) (A )du dv (B )2vdu udv u- (C )2udv vdu u + (D )2udv vduu- 解:222()()u u u v uv u vdx uv dx vdu udvd dx dx v v v v v''''---'====,选(B ). 10.(2005年,3分)设()(1)(2)(99)f x x x x x =---,则(0)f '=( )(A )99!- (B )0 (C )99! (D )99 解:当0x=时,()f x '中除(1)(2)(99)x x x ---项外,其他全为零,故(0)(01)(02)(099)99!f '=---=-,选项(A )正确. 11.(2005年,3分)设ln y x =,则()n y =( )(A )(1)!nn n x -- (B )2(1)(1)!n n n x --- (C )1(1)(1)!n n n x ---- (D )11(1)!n n n x --+-解:由ln yx =可得,1y x '=,21y x''=-,433222!x y x x x-'''=-==, 2(4)64233!x yx x⋅=-=-,,对比可知,选项(C )正确.12.(2005年,3分)2sin ()d xd x =( ) (A )cos x (B )sin x - (C )cos 2x (D )cos 2xx解:2sin cos cos ()22d x xdx xd x xdx x==,选项(D )正确. 二、填空题1.(2010年,2分)若曲线()yf x =在点00(,())x f x 处的切线平行于直线23y x =-,则0()f x '= .解:切线与直线平行,则切线的斜率与直线的斜率相等,故0()2f x '=.2.(2010年,2分)设cos(sin )y x =,则dy = .解:cos(sin )sin(sin )cos dyd x x xdx ==-.3.(2008年,4分)曲线21y x =+在点(1,2)的切线的斜率等于 .解:由导数的几何意义可知,切线斜率(1,2)(1,2)22k y x'===.4.(2008年,4分)由参数方程cos sin x t y t =⎧⎨=⎩ 确定的dy dx = .解:(sin )cos cot (cos )sin t t y dy t tt dx t tx ''====-'-'. 5.(2006年,2分)曲线2sin yx x =+在点(,1)22ππ+处的切线方程是 .解:切线的斜率(,1)(,1)2222(12sin cos )1k y x x ππππ++'==+=,故切线方程为(1)1()22y x ππ-+=⋅-,即 1y x =+.6.(2006年,2分)函数2()(1)f x x x x =-不可导点的个数是 .解:2222(1),0()(1),0x x x f x x x x ⎧+≥=⎨-+<⎩ ,显然,当0x ≠时,()f x 可导;当0x =时,2200()(0)(1)(0)lim lim 00x x f x f x x f x x +++→→-+'===-,2200()(0)(1)(0)lim lim 00x x f x f x x f x x-+-→→--+'===-,故 (0)0f '=.故函数()f x 的不可导点的个数为0.7.(2006年,2分)设1(1)xy x=+,则dy = .解:因11ln(1)ln(1)21111[(1)][][ln(1)()]11x x x x x y e e x x x x x++'''=+==++⋅⋅-+111(1)[ln(1)]1x x x x =++-+,故 111(1)[ln(1)]1x dy dx x x x =++-+.三、计算题1.(2010年,5分)设函数()y y x =由方程2xy x y =+所确定,求x dydx=.解:方程2xyx y =+两边对x 求导,考虑到y 是x 的函数,得2ln 2()1xy dy dy y xdx dx ⋅+=+,整理得 2ln 22ln 21xy xy dy dy y x dx dx+⋅=+, 故2ln 2112ln 2xy xydy y dx x -=-.当0x =时,代入原方程可得1y =,所以 0012ln 21ln 21ln 2112ln 21xy x x xy y dy y dx x ===--===--. 说明:当得到2ln 2()1xydy dyy xdx dx⋅+=+后,也可直接将0x =,1y =代入,得 ln 21dydx=+,故ln 21x dy dx ==-.2.(2010年,5分)求函数sin x y x =(0x >)的导数.解:sin sin ln sin ln sin ln 1()()()(cos ln sin )x x x x x x xy x e e e x x x x ''''====+⋅sin sin (cos ln )x xx x x x=+. 3.(2009年,5分)设22sin1xy x =+,求dy dx.解:因22sin1x y x =+,故22(sin )1dy x dx x'=+2222222222(1)22222cos cos 1(1)(1)1x x x x x x x x x x+-⋅-=⋅=++++. 4.(2006年,4分)设()f x可导,且()f x '=d f dx .解:df f dx ''=⋅2x x==-. 5.(2005年,5分)已知0sin ,0(),0x tdt x f x xa x ⎧⎪≠=⎨⎪=⎩⎰ .(1)()f x 在0x =处连续,求a ; (2)求()f x '.解:(1)因 0sin lim ()limlimsin 0xx x x tdt f x x x→→→===⎰,故由()f x 在0x =处连续可得,0lim()(0)x f x f →=,即 0a =.(2)当0x ≠时,002sin sin sin ()x x tdt x x tdt f x x x '⎛⎫- ⎪'== ⎪⎝⎭⎰⎰; 当0x =时,02000sin sin ()(0)(0)limlim limxxx x x tdt tdt f x f xf x xx→→→-'===-⎰⎰0sin 1lim22x x x →==.故2sin sin,0 ()1,02xx x tdtxxf xx⎧-⎪≠⎪'=⎨⎪=⎪⎩⎰.。

高等数学2专升本教材目录

高等数学2专升本教材目录

高等数学2专升本教材目录一、导数与微分1.1 函数的定义及性质1.2 无穷小与无穷大1.3 极限与连续1.4 导数的定义与性质1.5 高阶导数与复合函数的求导法则1.6 隐函数与参数方程的导数1.7 微分的定义与性质二、微分中值定理与导数的应用2.1 罗尔中值定理2.2 拉格朗日中值定理2.3 克莱罗中值定理2.4 泰勒公式及应用2.5 霍尔德定理2.6 函数的极值与最值2.7 函数图形的描绘三、不定积分与定积分3.1 不定积分的定义与性质3.2 微元法与换元法3.3 分部积分法及辅助函数法 3.4 定积分的定义与性质3.5 定积分的计算方法3.6 营养与生物量的计算3.7 定积分的应用四、多元函数微分学4.1 二元函数与偏导数的定义 4.2 偏导数的计算与性质4.3 隐函数的求导与高阶导数 4.4 李氏条件及其应用4.5 多元函数的极值与最值4.6 多元函数的泰勒公式与应用4.7 多元函数的积分五、常微分方程5.1 常微分方程的基本概念及解的存在唯一性定理 5.2 一阶线性微分方程5.3 可降阶的高阶微分方程5.4 齐次线性微分方程与非齐次线性微分方程5.5 可分离变量型微分方程5.6 常系数线性微分方程5.7 变量可分离微分方程六、二元函数积分学6.1 二重积分的定义与性质6.2 二重积分的计算方法6.3 二重积分的应用6.4 三重积分的定义与性质6.5 三重积分的计算方法6.6 三重积分的应用七、曲线积分与曲面积分7.1 第一类曲线积分7.2 第二类曲线积分7.3 曲线积分的应用7.4 第一类曲面积分7.5 第二类曲面积分7.6 曲面积分的应用7.7 广义积分与负积分八、向量场与散度8.1 向量场的概念与运算8.2 散度与无源场8.3 散度的计算方法与应用8.4 散度定理九、旋度与斯托克斯公式9.1 旋度的定义与性质9.2 旋度定理9.3 梯度、散度与旋度的关系9.4 斯托克斯公式及其应用十、拉普拉斯方程与调和函数10.1 拉普拉斯方程与调和函数的概念10.2 边界上的泊松问题10.3 球坐标系与柱坐标系中的拉普拉斯方程10.4 调和函数的展开与应用十一、傅里叶级数与傅里叶变换11.1 傅里叶级数的定义与性质11.2 奇偶函数的傅里叶级数展开11.3 傅里叶级数的收敛性11.4 傅里叶级数的应用与展开函数的逼近11.5 傅里叶变换的定义与性质11.6 傅里叶变换的逆变换11.7 傅里叶变换的应用与卷积定理十二、偏微分方程与特殊函数12.1 偏微分方程的基本概念及解的存在唯一性定理 12.2 热传导方程12.3 波动方程12.4 拉普拉斯方程12.5 结束语以上是《高等数学2专升本教材》的目录,涵盖了导数与微分、微分中值定理与导数的应用、不定积分与定积分、多元函数微分学、常微分方程、二元函数积分学、曲线积分与曲面积分、向量场与散度、旋度与斯托克斯公式、拉普拉斯方程与调和函数、傅里叶级数与傅里叶变换、偏微分方程与特殊函数等内容。

成人高考专升本高等数学(二)复习资料

成人高考专升本高等数学(二)复习资料

第一阶段(3月初)主要任务是全面复习,夯实基础。

这个阶段,要按照考试大纲所列复习考试内容,全面系统地复习基础知识,对基本概念与基本原理狠下功夫,对两者的理解要深、透、不留死角。

复习基础知识时要讲究方法,注意各种知识点的归纳与类比、分析与综合,注意各知识点之间纵向与横向的联系,建立基础知识框架,总体把握基础知识的脉络。

第二阶段(8月初)主要任务是重点复习,强化练习。

这个阶段,要抓住复习重点,加强考试热点、常考知识点的复习,同时强化练习,掌握基本方法、基本技能,提高解题能力。

第三阶段(9月底10月初) 主要任务是冲刺复习,模拟测试。

这个阶段,在重点复习的同时,要进行模拟测试。

通过模拟测试能发现自己的薄弱环节,从而拾遗补缺,针对薄弱环节重点复习。

同时,通过模拟测试,有利于熟悉考试情景,合理安排答题时间,调整应考心里,从而提高应试能力。

第一节、函数(不单独考,了解即可)一、复合函数:要会判断一个复合函数是由哪几个简单函数复合而成的。

2ln sin y x =是由ln y u =,2u v =和sin v x =这三个简单函数复合而成.3arctan x y e =是由arctan y u =,v u e =和3v x =这三个简单函数复合而成. 该部分是后面求导的关键! 二、基本初等函数:(1)常值函数:y c = (2)幂函数:y x μ= (3)指数函数:x y a =(a 〉0,1)a ≠且 (4)对数函数:log a y x =(a 〉0,1)a ≠且(5)三角函数:sin y x =,cos y x =,tan y x =,cot y x =,sec y x =,csc y x =(6)反三角函数:arcsin y x =,arccos y x =,arctan y x =,cot y arc x = 其中: (正割函数)1sec cos x x =, (余割函数)1csc sin x x= 三、初等函数:由基本初等函数经过有限次的四则运算和复合运算,并能用一个解析式表示的函数称为初等函数。

山东专升本,计算机第二章重点复习资料及习题集

山东专升本,计算机第二章重点复习资料及习题集

第二章Windows XP操作系统操作系统是计算机中最重要的系统软件,是用户和计算机硬件之间的桥梁,用户通过操作系统提供的命令和有关规范来操作和管理计算机。

主要任务是对系统中的硬件、软件实施有效的管理,以提高系统资源的利用率。

计算机硬件资源主要是指处理机、主存储器和外部设备,软件资源主要是指信息(文件系统)和各类程序。

操作系统的功能:处理机管理、存储管理、设备管理和文件管理、作业管理、用户接口。

用户接口:程序接口、命令接口、图形接口。

操作系统的主要特征:并发性、共享性、异步性、虚拟性。

其中并发、共享是操作系统的最基本特征。

又互为对方的存在而存在。

按照操作系统的功能特征,操作系统一般可分为三种基本类型,即批处理系统、分时系统和实时系统。

根据使用环境不同,叉可分为嵌入式操作系统、个人计算机操作系统、网络操作系统和分布式操作系统。

分时操作系统:采用时间片轮转方式处理服务请求,并通过交互式在终端上向用户显示结果。

具有多路性、交互性、独占性和及时性的特征,它将CPU的运行时间划分成若干个片段,称为时间片。

操作系统以时间片为单位,轮流为每个终端用户服务。

个人计算机操作系统:根据在同一时间使用计算机和用的多少,操作系统又可以分为单用户操作系统和多用户作系统,单用户操作系统是指一台计算机在同一时间只能由一个用户使用,一个用户独自享系统的全部硬件和软件资源。

如果在同一时间允许多个用户同时使用计算机,则称为多用户作系统。

如果用户在同一时间可以运行多个应用程序(每个应用程序被称作一个任务).则这样的操作系统称为多任务操作系统。

如果用户在同一时间只能运行一个应用程序,则对应的操作系统称为单任务操作系统。

/个人计算机操作系统是单用户操作系统。

早期的DOS操作系统是单用户单任务操作系统。

Windows XP则是单用户多任务操作系统。

计算机的正确开机步骤:先开外设电源,后开主机电源开关。

关机则是先关主机、后关外设电源。

当我们移动鼠标时,屏幕上会有一个小的图形在跟着移动,这个小的图形称为鼠标指针,简称指针。

专升本计算机基础知识复习题2(答案评讲)

专升本计算机基础知识复习题2(答案评讲)

第一章:计算机基础知识复习题一、判断题:红色正确1. 对计算机RAM中的信息进行读、写操作时,主机必须通电。

2. ROM中存储的信息断电即消失。

(RAM)3. 机器语言与汇编语言都是低级语言,因此用它们编制的程序,其运行效率肯定低于高级语言所编的语言。

(与运行效率无关)4. 采用计算机高级语言编写的程序,其执行速度比用低级语言编写的程序要快。

(高级语言转换为低级语言供计算机直接执行)5. 汇编语言和机器语言都属于低级语言,都能被计算机直接识别执行。

(机器语言)6. 字长是衡量计算机精度和运算速度的主要技术指标。

7. 计算机区别于其它工具的本质特点是具有逻辑判断的能力。

8. 同一张软盘上不允许出现同名文件。

(考虑了扩展名)9. 点距是彩色显示器的一项重要技术指标,点距越小,可以达到的分辨率就越高,画面就越清晰。

10. 由于多媒体信息量巨大,因此,多媒体信息的压缩与解压缩技术中最为关键的技术之一。

11. 指令和数据在计算机内部都是以区位码形式存储的。

(二进制)12. UNIX是一种多用户单任务的操作系统。

(多用户多任务)13. CAD系统是指利用计算机来帮助设计人员进行设计工作的系统。

14. 计算机的性能指标完全由CPU决定。

15. 电子计算机的发展已经经历了四代,第一代的电子计算机都不是按照存储程序和程序控制原理设计的。

16. 我国的第一台电子计算机于1958年试制成功。

17. 第三代电子计算机主要采用大规模、超大规模集成电路元件制造成功。

18. 计算机中用来表示内存容量大小的最基本单位是位。

(字节)19. 微型计算机的更新与发展,主要基于微处理器的变革。

20. 计数制中使用的数码个数被称为基数。

21. ALU是控制器中的一个主要部件。

(运算器)22. 20根地址线的寻址范围是512K。

(220b=128KB,例:两根线的寻址范围有4个,即2的2次方)内存中一个地址代表一个字节。

23. 将八进制数154转换成二进制数是1110110。

普通高校专升本考试《英语》历年真题汇编(二)

普通高校专升本考试《英语》历年真题汇编(二)

普通高校专升本考试《英语》历年真题汇编(二)1. 【Vocabulary and Structure】(江南博哥)He told me that he _______ here for ten minutes.A. has comeB. had arrivedC. had beenD. came正确答案:C参考解析:【答题思路】题干大意:他告诉我,他已经在这里十分钟了。

根据句意可知,“在这里”这一动作发生在“告诉”这一动作之前,而句中“告诉(told)”使用了过去式,所以that引导的宾语从句应用过去完成时,即从句谓语动词应用“had+过去分词”的形式,表示从句动作发生在“过去的过去”。

从句中的时间状语for ten minutes(十分钟)表示一段时间,不能和短暂性动词连用,所以排除B项。

故选C。

2. 【Vocabulary and Structure】In today’s class, he appeared to be _______ than he used to be.A. very activeB. much activeC. more activeD. most active正确答案:C参考解析:【答题思路】题干大意:在今天的课堂上,他似乎比往常(表现得)更积极。

根据句意和空后的than可知,此处应用形容词的比较级。

active(积极的)的比较级为more active。

故选C。

3. 【Vocabulary and Structure】_______ receiving the book, she went over the most interesting chapters first.A. OnB. InC. AtD. By正确答案:A参考解析:【答题思路】题干大意:一收到那本书,她就先仔细查阅了最有趣的章节。

on:就在……之后,……就;in:在……内,在……中,在(某段时间)之后,在……方面;at:在(某处),向,朝;by:靠近,在……旁边。

2022年专升本英语800个词组复习资料(2)

2022年专升本英语800个词组复习资料(2)

2022年专升本英语800个词组复习资料(2)1. get together 聚会2. get up 起床3. get ready for 做好准备4. give back 归还5. give out 分发6. give up 放弃7. give off 散发8. give in 屈服,投降9. have a glance at sth. 瞥一眼10. go back 回去11. go by (时间)过去; 经过(地点)12. go fishing/skating/swimming/shopping去钓鱼/滑冰/游泳/ 购物13. go for a walk 出去散步14. go on 继续15. go on doing sth. 继续做某事16. go on with one's work 继续自己的工作17. go out (灯,火) 熄灭18. go over 复习,检查19. go to bed 睡觉20. go to school 上学21. be good at sth. 善于22. do sb. good(健康或行为)对人有益23. no good (doing sth.)无用24. graduate from 毕业于25. ground floor 一层楼(英)26. grow up 成长27. grow out of由……而来28. grow into 长成29. have a habit of doing sth.有…的习惯30. half an hour 半小时31. hand in 上交,交纳32. hand out 分发33. hand in hand手拉着手地34. on the one hand一方面35. on the other hand另一方面36. hand over移交;让与37. hang on 别挂断38. hang up 挂断电话39. happen to发生(某事件)碰巧40. hard(形) work 辛苦的工作41. work hard(副) 努力工作42. hate to do sth. (没做过)hate doing sth. (做完了)憎恨做…43. have got to 不得不44. have sth. on 穿着45. have to 不得不46. have a cold 感冒47. have lunch 吃午饭48. have sports 运动49. have a meeting 开会50. have lessons 上课51. had better (not) do sth.最好(别) 做…52. use one's head 动脑筋53. head for (地点) 往…去54. have a headache 头痛55. hear from 收到…的来信56. hear of 听说57. learn/know sth. by heart记住某事58. heart attack . 心脏病发作59. heart disease . 心脏病60. at a height of 高度是…61. say hello to sb. 向…问好62. help oneself to sth. 随便吃…63. help sb. with sth. 帮助某人某事64. couldn't(can't) help doing sth.情不自禁,忍不住65. help to有助于,促进66. help sb. do sth. 帮助某人做某事67. here and there 到处68. hold on 等等,别挂电话; 坚持69. hold back 阻止; 抑制70. hold up举起71. on holiday 在度假72. at home 在家里73. go home 回家74. in honor of向……表示敬意,为祝贺……75. how far 多远(距离)76. how long 多久(时间)77. how many 多少(可数)78. how much 多少(不可数)79. how old 几岁80. How come?为何81. how about …怎麽样(建议性)82. hundreds of 成百上千83. hunger for sth. 渴望;欲望84. be hungry for sth. 渴望得到…85. hurry up 赶快86. in a hurry 匆忙地87. insist on doing sth. 坚持做…88. instead of 代替,而不是89. a place of interest 名胜90. be interested in sth. 对…感兴趣91. interest rate 利率92. introduce A to B 将A介绍给B93. invite sb. to do sth. 邀请某人做某事94. invite sb. to (场合,地点) 邀请95. a traffic jam 交通堵塞96. join in 参加(组织)97. join up 连接起来98. play a joke on sb.开了某人一个玩笑99. jump to one's feet 一跃而起100. just now 刚才,不久前101. just then 正在那时102. keep on doing sth. 继续做某事103. keep off 避开;不接近104. keep up with 跟上;不落后; 105. keep a secret 保守秘密106. keep away from 远离107. keep in touch . 保持联络108. keep in mind 紧记109. a key to sth. 解答;答案110. a key for sth. … 的钥匙111. a key of sth. …的键112. a kind of 一种,一类113. all kinds of 各种各样的114. kind of 有点儿,有几分115. knock at 敲(门,窗) 116. knock into sb. 撞在某人身上117. know about sth. 了解118. be known for sth. 以…而闻名119. lack of 缺乏120. at large 逍遥法外的121. at last 最后,终于122. be late for (school) 迟到123. laugh at 嘲笑,漠视124. lay out 布置;安排,陈列125. lead to 导致; 通向126. league member 团员127. learn of/about 得知;获悉128. learn one's lesson接受教训129. learn by heart . 记住130. learn from sb. 向…学习131. learn to do sth. 学习(技能) 132. at least 至少133. leave about(around) 乱扔,乱放134. leave behind 留下,遗留,超过135. leave for 到。

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附件1:
2010年度跨校“专升本”“对口”接收学校一览表
选送学校报考“对口”学校明细表
举办“专升本”教育学校“对口”选送学校明细表
选送学校
接收学校
接收学校
选送学校
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阿坝师范高等专科学校、绵阳职业技术学院、四川警安职业学院
南充职业技术学院
西华师范大学、西华大学、西昌学院
四川教育学院
西华师范大学、四川师范大学、西华大学
西华大学
成都纺织高专、成都航空职院、南充职院、四川电力职院、四川广播电视大学、四川航天职院、四川建筑职院、四川交通职院、四川职业技术学院、电子科技大学成都学院、四川外语学院成都学院、四川教育学院、四川华新现代职院、成都东软信息职院、四川信息职院、四川商务职院、四川工程职业技术学院
泸州医学院
学校总计:54
学校总计:17
注:请各学校仔细查阅,若有疑问请尽快与“对口”学校和省教育厅联系。
四川化工职业技术学院
四川理工学院
绵阳职业技术学院
四川理工学院、绵阳师范学院、西南科技大学
达州职业技术学院
川北医学院、西南科技大学、西华师范大学
雅安职业技术学院
泸州医学院、西华师范大学
泸州医学院
乐山职业技术学院、雅安职业技术学院、四川中医药高等专科学校
乐山职业技术学院
泸州医学院、乐山师院
四川音乐学院
四川音乐学院绵阳艺术学院
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