西南大学20年6月1043-大作业参考机考【答案】

西南大学培训与继续教育学院课程考试试题卷学期：2020年春季课程名称【编号】：高等数学【0917】 A卷考试类别:大作业满分：100 分（一）计算题（本大题共9小题，任意选做4个小题，每小题20分，共80分）1. 求.2. 求不定积分.3. 求定积分.4. 求函数的导数.5. 求函数的极值.6. 求函数的二阶偏导数及.7. 计算函数的全微分.8.求微分方程的通解.9. 计算，其中是抛物线及直线所围成的闭区域.（二）证明题（本大题共1小题，必做，共20分）1. 证明方程在区间（-1，0）内有且只有一个实根.计算题；1（1-x)^5*(1+x+x^2)^5=(1-x)^4(1+x+x^2)^4*(1-x)(1+x+x^2)=[(1-x)(1+x+x^2)]^4*(1-x)(1+x+x^2)=(1-x^3)^4*(1-x)(1+x+x^2)=[(1-x^3)^2]^2*(1-x)(1+x+x^2)=[(1-x^3)^2]^2*(1-x^3)=（1-X^3)^52∫x^4/(1+x²)² dx=∫[1+1/(1+x²)²-2/(1+x²)]dx,用综合除法=∫dx+∫dx/(1+x²)²-2∫dx/(1+x²)在第二项,令x=tanp,dx=sec²pdp=∫dx+∫sec²p/(1+tan²p)²-2∫dx/(1+x²)=∫dx+∫sec²p/(sec^4p)-2∫dx/(1+x²)=∫dx+∫cos²pdp-2∫dx/(1+x²)=∫dx+∫(1+cos2p)/2 dp-2∫dx/(1+x²)=∫dx+(1/2)∫dp+(1/4)∫cos2pd(2p)-2∫dx/(1+x²)- 1 -=x+(1/2)p+(1/4)sin2p-2arctanx+C=x+(1/2)p+(1/2)sinpcosp-2arctanx+C=x+(1/2)arctanx+(1/2)[x/√(1+x²)][1/√(1+x²)]-2arctanx+C=x-(3/2)arctanx+(1/2)[x/(1+x²)]=x+x/[2(1+x²)]-(3/2)arctanx+C4y′=2（1+cos2x）（1+cos2x）′=2（1+cos2x）（-sin2x）（2x）′=4（1+cos2x）（-sin2x）=-4sin2x-2sin4x5 令f′(x)=0,解得x1=−1,x2=0,x3=1当x变化时,f′(x),f(x)的变化如下表x (−∞,−1) −1 (−1,0) 0 (0,1) 1 (1,+∞)f′(x) − 0 − 0 + 0 +f(x) 减无极值减极小值增无极值增当x=0时,f(x)有极小值，极小值是0，无极大值二证明题- 2 -。

西南大学网络与继续教育学院课程考试试题卷
类别：网教2020年5月
课程名称：数学教育学(方法论)【0350】
A卷大作业满分：100 分
要答案：wangjiaofudao
一、简述题（共计30分）
1. 简述教学评价对数学教学的功能。

（10分）
2. 简述数学教学原则中的“渗透数学思想方法原则”（20分）
二、实践与综合运用题（共计70分）
（一）选择以下知识点之一（共计30分）
分数的概念（小学）
平方差公式（初中）
函数的单调性（高中）
（1）分析教材，指出该知识点渗透了哪些数学思想方法（10分）
（2）分析学生学习该知识点的思维障碍或者容易出现的典型错误及原因（10分）（提示：该知识点的“思维障碍”与“典型错误”可选择其中之一进行分析）, （3）提出相应的教学策略（10分）
（没有固定评分标准，根据回答情况酌情给分）（二）根据所提出的教学策略，设计简要的教学过程（40分）
答题提示：教学过程设计具有整体性，各环节衔接自如，结构紧凑；在渗透数学思想方法、突破学生思维障碍或纠正典型错误上与上述（一）的回答有一定的联系。

（没有固定评分标准，根据回答情况酌情给分）。

西南大学网络与继续教育学院课程考试试题卷类别：网教2020年5月课程名称【编号】：大学物理基础【1030】A卷大作业满分：100 分要答案：wangjiaofudao一、简答题：（共8题，每题10分，选择其中4个题目作答，共40分）1、温度的微观本质是什么？2、什么是自由度？刚性单原子、双原子、多原子各有几个自由度？3、热力学第一定律的内容是什么？4、热力学第二定律的开尔文表述的内容是什么？5、什么是熵增加原理？6、一个物体做简谐振动，其能量的特征是什么？7、什么是波动？机械波与电磁波的主要区别是什么？8、什么是光程？二、计算题：（共5题，每题30分，选择其中2个题目作答，共60分）1、一体积为1.0×10-3 m3 的容器中，含有4.0×10-5 kg的氦气和4.0×10-5 kg 的氢气，它们的温度为30℃，试求容器中混合气体的压强。

2、今有两摩尔的理想气体氮气，温度由17℃升为27℃。

若在升温过程（1）体积保持不变，（2）压强保持不变，求气体在这两过程中各吸收多少热量？各增加了多少内能？各对外做了多少功？3、一质点沿x轴作简谐振动，振幅A＝0.05m，周期T＝0.2s。

当质点正越过平衡位置向负x方向运动时开始计时。

写出此质点的简谐振动方程；（2）另一质点和此质点的振动频率相同，但振幅为0.08m，并和此质点反相，写出另一质点的简谐振动方程；4、用波长λ=500nm的单色光垂直照射在由两块玻璃板（一端刚好接触成为劈棱）构成的空气劈尖上。

劈尖角θ=2×10-4rad。

如果劈尖内充满折射率为n=1.40的液体。

求从劈棱数起第五个明条纹在充入液体前后移动的距离。

5、杨氏双缝干涉装置的下缝上被一片很薄的玻璃片覆盖，这时零级明纹移动到原来的6级暗纹的地方，如果入射光的波长为600nm，玻璃片的折射率为n=1.55，求玻璃片的厚度e。

西南大学网络与继续教育学院课程考试试题卷类别：网教2020年5月课程名称【编号】：跨文化交际【0859】A卷大作业满分：100 分要答案：wangjiaofudaoAnalyze the following cases，and then answer the given questions. (50%)Case 1Can we talk about us?Anna asks her fiancé, Ben, “Can we talk about us?”Immediately Ben tenses up, sensing trouble. He presents himself for an unpleasant conversation and reluctantly agrees. Anna then thanks Ben for being so supportive during the last few months when she was under enormous pressure at her job. She tells him she feels closer than ever to him. Then she invites Ben to tell her what makes him feel loved and closer to her. Although Ben is relieved to them there is no crisis, he’s also baffled. “If there isn’t a problem, why do women need to talk about the relationship? If it’s working, let it be.”Could you explain why Ben was reluctant to have a talk with his fiancée?Case 2 ; MistakesGrace is a university student in China, and she has an English conversation class with a Western teacher named Mr. Schmidt. In the class Grace has lots of chances to practice her speaking because Mr. Schmidt often has the students discuss in pairs or small groups. Grace likes all the speaking practice, but she also worries because her friends’English isn’t any better than hers and they cannot correct English mistakes she makes. So Grace also likes to talk directly with Mr. Schmidt when she has the chance.,However, Grace has noticed that even when Mr. Schmidt talks with her in class, he almost never corrects mistakes in her English. This worries her because she is afraid that if he doesn’t correct her mistakes now, the mistakes will become bad habitsthat are hard to break later. So several times after class she has politely asked Mr. Schmidt to be especially careful about correcting errors she makes in English. He has always assured her that he will.&Today, Grace has just made a speech in class, and hopes that Mr. Schmidt will point out some of her errors. However, after her speech, he only comments about the content of what she said. To her surprise, and frustration, he still says nothing about her grammar.Questions:1) Why do you think Mr. Schmidt never corrects Grace’s English mistakes?2) If you were Grace, what would be your response to Mr. Schmidt’s “negligence”?II. Answer the following questions: (50%)“Stereotype”is said to be one of the potential barriers of intercultural communication. What is “stereotype”? Why we take stereotypes as a barrier of intercultural communication?7 ?As we know, a word in one language does not necessarily have a counterpart in the other language; words or terms in both languages appear to refer to the same object or concept only on the surface, but actually refer to quite different things. Explain the cultural differences of the following pairs of words: 龙vs. dragon, 知识分子vs. intellectuals,书vs. book, 狗vs. dog.。

西南大学培训与继续教育学院课程一、单项选择题(本大题共10小题，每道题3.0分，共30.0分)1.中国从汉武帝的“( )，独尊儒术”起，儒学在意识形态领域取得了统治地位，并成为传统文化的核心。

A.董仲舒B.焚书坑儒C.法学D.罢黜百家2.（）是根据国家性质和法律建立起来的教育机构系统和教育规范系统的总称。

A.教育法规B.教育制度C.学校制度D.学生手册3.从教育学的意义上讲，人的发展通常指( ) 、心理与社会发展三个方面。

A.人的身体B.动物的身体C.学生的发展D.植物的发展4.1.近现代社会教育的特征( )、学校教育的系统性、教学内容的丰富性、发展目标的全面性。

A.教育的社会性B.教育的普及性C.教学的限制性D.学生的差异性5.( )是西方教育史上第一个指出教育具有巨大政治功能的思想家。

A.柏拉图B.弗洛伊德C.荣格D.杜威6.教育起源论有( )、心理起源论、劳动起源论、人的成长需要起源论。

A.动物起源论B.植物起源论C.社会起源论D.生物起源论7.（）被称为“教育学的雏形”，是我国也是世界最早的教育专著。

A.四书B.学记C.五经D.礼记8.衡量教育测量的质量，可以采用信度、（）、难度、区分度4个指标。

A.经度B.纬度C.效度D.长度9.教育的发生包括( )与出现两个阶段。

A.起源B.结果C.发生D.未来10.教育过程的基本要素( )、教师、教育内容。

A.学校B.学生C.社会D.教材二、判断题(本大题共15小题，每道题2.0分，共30.0分)1.社会发展，从广义上讲不是指整个人类社会向前运动的过程，包括了社会的流动与变迁。

（）对错2.荀子说：“干越夷貉之子，生而同声，长而异俗，教使之然也”不是指得教育对人的发展具有促进作用。

（）对错3.教学是一种特殊的师生交往，并在教学实践中以对话的形式表现出来。

对话构成了新的师生关系——“我—你”关系。

（）对错4.教育本质“上层建筑说”：社会存在决定社会意识，教育属于精神生活，不属于社会意识形态的范畴。

西南大学网络与继续教育学院课程考试试题卷类别：网教2020年5月课程名称【编号】：高级英语一【0848】A卷大作业满分：100 分要答案：wangjiaofudaoExercise 1Choose any one of the following passages and then translate it into Chinese. Passage 1 (From Unit 1)Failure is a better teacher than success since success always encourages repetition of old behavior whereas failure can prompt fresh thinking, a change of direction. After twelve years of studying ballet a friend of mine applied to join a professional company. She was turned down. “Would further training help?”she asked. The ballet master shook his head. “You will never be a dancer,”he said. “You haven’t the body for it.”In such cases, the way to use failure is to face the reality (face the music) courageously, asking “What have I left? What else can I do?”My friend put away her toe shoes and moved into dance therapy, a field where she’s both competent and useful.Passage 2 (From Unit 4)!On the positive side, there are a number of things worth recommending, such as the following:0 l1. Ask others about themselves; at the same time, be on guard not to talk too much about yourself.2. Keep you voice modulated. Laugh when moved to do so but avoid raucous laughter, and don’t giggle at your own remarks.:3. Listen to whoever is speaking and make it apparent that you are listening by not letting your eyes wander or your attention be diverted.4. If another person joins the conversation, bring him briefly up to date on what is being discussed and encourage him to join the conversation.5. At dinner parties, break the ice by turning to the person sitting next toyou and asking some question that is calculated to elicit an answer that can then become the subject of conversation. It does not make much difference what you ask if it succeeds in getting other person to speak.Passage 3 (From Unit 15)The race will intensify year by year —with far-reaching impacts on society. Who “owns”the bottom of the ocean and the marine life that covers it? As ocean mining becomes feasible and economically advantageous, we can expect the resource balance among nations to shift. The Japanese already extract 10,000,000 tons of coal each year from underwater mines; tin is already being ocean-mined by Malaysia, Indonesia and Thailand. Before long nations may go to war over patches of ocean bottom. We may also find sharp changes in the rate of industrialization of what are now resource-poor nations.Exercise 2 Skimming and Scanning (10x3=30);In this part, you are required to go over the passage quickly.For questions 1-7, choose the best answer from the four choices marked A, B, C and D.For questions 8-10, complete the sentences with the information given in the passage.1. What is the top reason Americans travel in the summertime?A. School is over.B. They think they deserve a rest.C. Summer is the season to travel.D. The weather is great.2. Every year, most companies _______.A. require a business tripB. insist that workers commuteC. have employees travel togetherD. provide a vacation for workers ) M F& M& R# c7 Q& S3. Many Americans treat their pets as _______. :A. their family membersB. very common thingsC. their own propertyD. very usual things4. According to the passage, some fancy hotels could provide for your pets the following EXCEPT _______.A. good accommodationB. some well-served foodC. a soft bedD. delicious Chinese meals5. It’s discovered that interaction with pet animals is good for health as they can help to _______. ' ^( Y0 u6 `4 ~! z5 v* oA. guard against unwelcome visitorsB. catch unwanted miceC. lower blood pressureD. keep company6. Pet can encourage social relationship by _______.A. acting as basic element to American cultureB. providing a subject for chatting 8C. becoming members for the familyD. having a friendly appearance(7. Traditionally, if a young man wants to get married to his girlfriend he is supposed to _______.A. propose to his friend at the right timeB. ask his girlfriend to marry him in a romantic wayC. get the permission of his girlfriend’s motherD. get the permission of his girlfriend’s father8. The counseling during engagement can prepare a couple for ___________.9. During the ceremony the bride usually wears a beautiful, long white wedding dress while the groom wears ___________.10. When the bride and groom begin to exchange their rings, it is a symbol of their ___________.A Few Aspects of American LifeTravelIt’s summertime. For many Americans, this is the season to travel. Why? Because school is over and the weather is great. And most of all, they believe they deserve a break. When Americans take a break, they often head for their favorite vacation spot.Throughout their history, Americans have been people on the move. The early immigrants had to travel to get to the New World. Once they arrived, they settled along the East Coast. But they weren’t content to stay here. Explorers and traders journeyed to the unknown western territories. Later, settlers moved west todevelop new areas. As a result of this west movement, Americans eventually occupied the whole continent—from the Atlantic to the Pacific. Even today, Americans seem unable to stay put. Research says that average American moves every five years.Americans are used to traveling. Some people make long-distance commuting to work daily. Their jobs may even require them to take frequent business trips. Most companies provide an annual vacation for their employees, and people often use that time to travel. Some people just visit friend or relatives in distant states. Some go on low-budget weekend trips and stay in economy motels. Those with more expensive tastes choose luxurious hotels. Camping out in the great outdoors appeals to adventurous types. Some travel in recreational vehicles to camp out in comfort, while others “rough it”by sleeping in tents. Families often plan their trips with the kids in mind. More and more “family friendly”hotels offer special programs for children.Americans love pets. Many pet owners treat their pets as a part of the family. You might say Americans treat their pets like they treat their children—sometimes even better.In America, there are more households with pets than those with children. At least 43 percent of US homes have pets of some sort. Usual creatures, such as monkeys, snakes and even wolves, find a home with some Americans. More common pets include fish, mice and birds. But the all-time favorites are cats and dogs, even at the White House. Americans sometimes have strong feelings about whether dogs or cats make better pets. “Dog people”and “cat people”often enjoy friendly competition.Many grocery stores in America sell pet foods. Pets can even accompany their owners on vacation. Fancy hotels are beginning to accommodate both man and animal. Animal guests at Four Seasons Hotels can enjoy delicious meals served on fine china and sleep in soft beds.The average American enjoys having pets around, and for good reason.Researchers have discovered that interacting with animals lowers a person’s blood pressure. Dogs can offer protection from robbers and unwelcome visitors. Cats can help rid the home of unwanted mice. Little creatures of all shapes and sizes can provide friendship and love. In many cases, having a pet prepares a young couple for the responsibilities of parenthood. Pets even encourage social relationships: they give their owners an appearance of friendliness, and they provide a good subject of conversation.Pets are as basic to American culture as hot dogs or apple pie. To Americans, pets are not just property, but a part of the family.Marriage“I do.”To Americans, these two words carry great meaning. They can even change your life, especially if you say them at your own wedding. Making wedding promises is like signing a contract. Now Americans don’t really think marriage is a business deal. But marriage is a serious business.It all begins with engagement. Traditionally, a young man asks the father of his sweetheart for permission to marry her. If the father agrees, the man later proposes to her. Often he tries to surprise her by asking her to marry him in a romantic way.Sometimes the couple just decides together that the time is right to get married. They may be engaged for weeks, months or even years. As the big approaches, bridal showers and bachelor’s parties provide many gifts. Today many couples also receive counseling during engagement. This prepares them for the challenges of married life.At last it’s time for the wedding. Although most weddings follow long-held traditions, there’s still room for individualism. For example, the usual place for a wedding is in a church. But some people get married outdoors. A few even have the ceremony while skydiving or riding on horseback! The couple may invite hundreds of people or just a few close friends. They choose their own style of colors, decorations and music during the ceremony. But some things rarely change. The bride usuallywears a beautiful, long white wedding dress. She traditionally wears “something old, something new, something borrowed and something blue”. The groom wears a formal suit. Relatives and close friends participate in the ceremony.6 {$ c6 o: V( y& ?As the ceremony begins, the groom stands with the minister, facing the audience. Music signals the entrance of the beautiful bride. Nervously, the young couple repeats their promises. Traditionally, they promise to love each other “for better, for worse, for richer, for poorer, in sickness and in health”. But sometimes the couple composes their own promises. They give each other a gold ring as a symbol of their marriage promise. Finally the minister announces the big moment: “I now pronounce you man and wife. You may kiss your bride!”Exercise 3 Writing (1x40=40)'Write a composition of about 200 words on any one of the following topicsife without InternetMy Views on Studying AbroadTime and Tide Wait for No ManYou are to write in three paragraphs.In the first paragraph, state clearly what your view is.)In the second paragraph, support your view with details."In the last paragraph, bring what you have written to a natural conclusion with a summary or suggestion.:Marks will be awarded for content, organization, grammar and appropriateness. Failure to follow the instructions may result in a loss of marks.。

西南大学网络与继续教育学院课程考试试题卷类别：网教2020年5月课程名称【编号】：概率论【0264】A卷大作业满分：100分要答案：wangjiaofudao本套大作业共有五个大题，请各位学员在其中选做4个大题，满分100分，多做按顺序由前四个题目的得分之和计总分。

所有题目的解答均需给出解题步骤，涉及到计算的请保留小数点后3位一、（本题共两个小题，满分25分，其中第一小题10分，第二小题15分）1、一颗骰子投4次至少得到一个六点与两颗骰子投24次至少得到一个双六，这两件事中哪一件有更多机会遇到？2、设X与Y为相互独立的随机变量,,Y的密度函数为求E(X-Y)、D(X-Y).二、（本题共两个小题，满分25分，其中第一小题10分，第二小题15分）1、在某一男、女人数相等的人群中，已知5％的男性和0.25％的女性患有色盲，今从该人群中随机的抽出一人，求：（1）此人患有色盲的概率；（2）若已知某人患有色盲，则此人是男性的概率为多少？2、若的密度函数为求：（1）常数；（2）。

三、（本题满分25分）设的联合密度函数为,（1）求的边际密度函数，的边际密度函数，并说明与是否独立？（2）求及它们的相关系数。

三、（本题共两个小题，满分25分，其中第一小题15分，第二小题10分）1、有两门同型号的高射炮，已知它们击中敌机的概率均为0.6，现同时向敌机开炮，求：（1）敌机被击中的概率；（2）恰好一门炮击中敌机的概率；（3）若只用两门炮，要保证击中敌机的概率不低于0.99，则该高射炮的命中率应达到多少？2、设是单调非降函数，且，对随机变量，若，证明：对任意的五、（本题共两个小题，满分25分，其中第一小题15分，第二小题10分）1、若服从分布，求的密度函数。

2、设随机变量服从泊松分布，求的特征函数；并用特征函数证明：若与相互独立，且，则。

西南【1100】线性代数（一）20年6月机考大作业参考答案西南大学网络与继续教育学院课程考试试题卷类别：网教专业：数学教育课程名称【编号】：线性代数(一)【1100】A卷大作业满分：100分要答案：wangjiaofudao一、单选题(每题4分,共32分)1、若，则必须满足（）C、可为任意数D、均可为任意数2、下列选项中不是五阶行列式中的一项的是（）3、设A,B，C均为n阶矩阵,若由能推出,则A应满足（）4、设矩阵，仅有零解的充要条件是（）A、A的列向量组线性无关B、A的列向量组线性相关C、A的行向量组线性无关D、A的行向量组线性相关5、下述结论中，不正确的是（）A、若向量与正交，则对任意实数与也正交;B、若向量与向量都正交，则与的任一组线性组合也正交C、若向量与正交，则与中至少有一个是零向量D、若向量与任意同维向量正交，则是零向量6、设A为n阶实对称矩阵，则（）A、A的n个特征向量两两正交B、A的n个特征向量组成单位正交向量组'C、A的重特征值，有D、A的重特征值，有7、三阶矩阵A的特征值为-2，1，3.则下列矩阵中非奇异矩阵是（）8、设A,B为n阶矩阵，且A与B相似，则（）B、A与B有相同的特征值和特征向量C、A与B都相似于一个对角矩阵D、对任意常数，相似二、判断题(每题4分,共28分)1、两个向量的内积一定大于零（）2、余子式和对应的代数余子式一定不相等（）。

3、任意两个矩阵都可以相加（）。

4、初等矩阵的乘积是初等矩阵（）。

5、单位矩阵是标准型是自己（）。

6、等价的向量组里向量个数一定相同（）。

7、线性方程组中方程的个数小于未知量的个数，则方程组一定有解（）。

三、名词解释(每题5分,共10分)1、非奇异矩阵2、特征向量四、计算题（每题10分，共20分）1、解下列方程组求矩阵P使得P-1AP是对角阵,其中A=.五、证明题(10分)对任意n阶矩阵A，证明+是对称矩阵。

西南大学网络与继续教育学院课程考试试题卷类别：网教2020年5月课程名称【编号】：人才学【0380】A卷大作业满分：100分要答案：wangjiaofudao一、名词解释（选择1题，每题10分，总分10分）1.人才价值（10分）2.社会承认（10分）二、简述题（选择2题，每题20分，总分40分）1.简述人才素质培养的途径。

（20分)2.简述人才使用的原则。

（20分）3.简述知识经济时代人才开发的特征。

（20分）三、材料论述题（必做题，每题50分，总分50分）材料一：著名人才学专家、北京市人才中心主任韩光耀说:“传统集市型的招聘会是人才交流方式的初级阶段的表现。

”这样的运作模式使人才市场在面对扩招后大批毕业生就业的关键时期失去了市场所应起到的资源配置功能。

材料二：当前，网上人才市场火爆。

网上招聘以其方便、快捷、廉价，受到了人们的欢迎。

因此人才网站发展很快。

区域性人才市场已普遍建立，全方位的人才市场格局正在形成。

在线招聘、受托招聘、网上面试、院校实习、素质评测、人才猎头、劳务输出等一批人气很旺的人才网站正在涌现。

但由于缺乏健全的制度保障，人才市场中介服务整体水平不高，市场运作不规范，涌现出不少的问题，如一些素质低劣的人才中介服务机构混淆其中，违规非法操作，乱收费，刊登虚假广告，利用人才招聘活动进行欺骗等。

同时，录用的部分职员频繁跳槽，不遵守劳务合同，人才的频繁流动给企业发展带来瓶颈。

??材料三：苏州经贸职业技术学院充分发挥区域经济优势，立足服务地方经济，利用与苏州市人事局、苏州市人才市场多次合作开办校园招聘会的经验，借助政府的公共信息资源及多年人才市场运作的经验，在学院内建立了学校和政府、企业共同投资管理的苏州市毕业生就业市场国际教育园北区市场。

通过政府、企业、学校三方联动，在校园内开办公益性常设人才市场——国际教育园北区市场，建立三方沟通、交流的零距离平台，从而创新学生就业工作体系，提升人才培养质量，实现就业资源共享，有利于人才资源的合理流动，促进大学生充分就业，有利于大学生把自身的知识转化为社会效益。

西南大学网络与继续教育学院课程考试试题卷类别：网教2020年5月
课程名称[编号]：线性代数[0044]
A卷
大作业
满分：100分
要答案：2
必答题（40分）
什么是线性方程组
阐述矩阵乘法的运算过程。

并用矩阵乘积形式表示如下线性方程组。

用初等变换的方法求解上述线性方程组从下列两题中任选一题作答（30分）
（a）什么是方阵的逆矩阵
（b）阐述求逆矩阵的初等行变换方法
（0）求解如下矩阵方程：
（a）什么是向量组线性无关
（b）判断向量组口是否线性无关。

（）分析式子D在几何上表达的含义。

（d）求解如下方程，并阐释D的意义
口从下列两题中任选一题作答（30分）
（a）求解行列式口
（b）求解矩阵D的特征值，并求0对应的特征向量
（a）阐述正交矩阵的定义。

（b）已知二二次型0变换为标准型时的正交变换矩阵为口，求该二次型的标准型。

西南大学20年6月0004大作业参考机考【答案】- 1 -西南大学培训与继续教育学院课程考试试题卷学期：2020年春季课程名称【编号】：离散数学【0004】 A 卷考试类别:大作业满分：100 分1.请给出集合A 到集合B 的映射f 的定义. 设R 是实数集合，f : (0,1) → R ,xx x f 111)(--=, 证明f 是双射.答：A ，B 是两个集合，如果按照某种对应法则f ，对于集合A 中的任何一个元素x ，在集合B 中都有唯一的元素y 和它对应，那么这样的对应叫做集合A 到集合B 的映射.记做f:A-→B.并称y 是x 的象，x 是y 的原象.对任意的（x ，y ））∈R*R ，f （（x ，y ））=（x+y ，X-y ），假设存在另一-（x1，y1，）满足f （（x1，y1）=（x1+y1，x1-y1）=（x+y ，X-y ），即：x1+y1=x+y ，x1-y1=x-y 解这个关于x1，y1的线性方程组x1=x ，y1=y 所以f 是入射对任意的（x ，y ）∈R*R 存在（a ，b ）∈R*R ，（a=（x+y ）/2，b=（x-y ）/2）满足f （（a ，b ））=（x ，y ），所以f 是满射所以f 是双射2. 设R 是集合A 上的关系，请给出R 的传递闭包t (R )的定义. 下图给出的是集合A = {1，2，3，4，5}上关系R 的关系图，试画出R 的传递闭包t (R )的关系图,并用集合表示.3. 请给出谓词逻辑的研究对象，并将“任何整数的平方均非负”使用谓词符号化.答：研究对象：个体词，谓词，量词，命题符号化，4. 解释命题公式真值表的含义，并利用真值表求命题公式()())()(p q r r q p →→?→→的主合取范式.答：真值表是含n(n ≥1)命题变项的命题公式，共有2n 组赋值将命题公式A 在所有赋值之下取值的情况列成表，称为A 的真值表。

（p^Q ）^（-pV-Q ）^表示“与”、“且”，也可以表示点乘号V 表示“或”，也可以表示“+”表示“非”，也可以表示为变量上面加一横在此逻辑表达式中基本逻辑变量为P ，Q 其含义为P 、Q 、（非P+非Q ）相与. 5. 给出叶赋权m 叉树的定义，并求叶赋权分别为2, 3, 5, 7, 8的最优2叉树. 答：w=2*(7+8+5)+3*(2+3)=55二、大作业要求大作业共需要完成三道题：第1题必做，满分30分；第2-3题选作一题，满分30分；第4-5题选作一题，满分40分.12345。

西南大学20年6月《教育科研方法》机考答案西南大学培训与继续教育学院课程考试试题卷学期：2021 年春季课程名称【编号】：教育科研方法【0451】 A 卷考试类别：大作业满分：100 分论述题（任意选择 2 2 道题作答。

每题 0 50 分） 1.教育行动研究报告的基本结构包括哪些？举例说明。

2.根据课题“城市初中生智能手机使用情况调查研究”完成以下任务。

【要求】（1）对核心概念“职能手机使用情况”进行分解，说明从哪几个方面来调查？（2）根据核心概念，设计调查问卷的问题（每个方面不少于 2 道题目，可以不写指导语）。

3.访谈调查的常用技巧有哪些？4.比较定性研究与定量研究，举例说明。

5.选题的基本要求有哪些（30 分）？请举例说明（20 分）。

2.根据课题“城市初中生智能手机使用情况调查研究”完成以下任务。

【要求】（1 1 ）对核心概念“智能手机使用情况”进行分解，说明从哪几个方面来调查？（2 2 ）根据核心概念，设计调查问卷的问题（每个方面不少于 2 2 道题目，可以不写指导语）。

关于城市初中生智能手机使用情况调查研究一、关于智能手机使用情况，主要从手机的来、日常使用的功能以及学生对于是否应该持有手机的态度进行调查，具体问题见问卷调查表。

二、关于城市初中生智能手机使用情况调查问卷同学们，你们好!为了解初中生智能手机使用情况，我们将就一些相关问题展开调查，希望同学们能协助完成这份问卷。

我们使用的是匿名调查,请你放心回答。

谢谢您的配合与支持! 一、填空题 1.你所在的学校 2.你今年岁，是年级的学生。

3.你的性别是4.你父母亲的工作是二、选择题 1.您目前使用手机吗? 有（）没有（）很快就会有了（）有手机的同学请回答：1、你的手机是如何的?（） A、父母买的 B、父母的朋友赠送 C、用自己的存的钱买的2、你拥有手机的理由是什么? （） A、方便和家人联系 B、同学们都有，我也想有 C、有手机多有气派 D、其他3、你经常使用手机吗? （） A、天天用 B、经常用 C、偶尔用 D、几乎没用4、你对手机功能使用最多的是? (可多选) （） A、收发短信 B、玩游戏C、电话联系 D、下载图片铃声 E、摄像机功能 F、上网 G、其他5、你发短信主要用作哪方面? （） A、联系亲人、朋友、同学 B、纯属闲聊 C、获取最新信息D、其他6、你一般通过手机和哪些人联系? （） A、亲人 B、朋友、同学、C 陌生人7、你觉得使用手机对学习有影响吗?（） A 有 B 没有 C 影响不大8、你觉得中学生有必要带手机吗?（） A 有 B 没有 C 无所谓 9、上课时，手机铃声突然响起，你觉得? （） A、非常反感 B、比较反感 C、无所谓 D、可以理解 10、使用手机给你带来哪些好处? (可多选) （） A、方便联系 B、小巧而且还能无线上网 C、无聊时打发时间 D、其他 11、你认为使用手机会给你带来哪些坏处? (可多选) （） A、总会有短信发来，打扰学习 B、手机上的一些功能让人迷惑，没有精力学习 C、玩游戏浪费时间 D、上网聊天影响学习 E、影响的视力 F、手机对人有辐射 G、手机对人有辐射 12、你的手机是哪种类型?（）A、普通手机B、智能手机C、限制功能手5.选题的基本要求有哪些？请举例说明①问题必须有价值。

西南大学网络与继续教育学院课程考试试题卷类别：网教(网教/成教) 专业：英语教育、应用英语课程名称【编号】：《英语语法》【0845】A卷大作业满分：100 分要答案：wangjiaofudaoI.单项选择题(本大题共20小题，每小题4.0分，共80.0分)1. ________, Malcolm X would not have been able to join the world community of thoughts and actions.A. If he didn't study English very hard through self-learningB. Were he to study English very hard through self-learningC. Had he didn't study English very hard through self-learning:D. Hadn't he studied English very hard through self-learning2. A pen is to a writer __________ a gun is to a fighter.A. asB. whatC. thatD. like3. Malcolm X would rather be fully occupied with copying a dictionary and reading aloud __________ the time away in prison.% l( o( d3 u' T6 k- P& tA. more than to idleB. than idle# ?C. rather than to idleD. more than idling4. ________ the scandal among his colleagues, Mr. Williams would have been promoted to the position as director.A. If he did not spreadB. Had he not spreadC. Did he not spreadD. Should he not spread5. The science of computer, __________ rapid progress has been made in recent years, is the most important in all the science.A. to whichB. in whichC. off whichD. from which6. This is a small house less than 80 square meters, under __________ roof lives a large family of three generations.A. whichB. thatC. itsD. whose7. Michael Phelps, __________ the feet are bigger than others, won eight gold medals at the National games.A. whoseB. whomC. of whoD. of whom8. Many Americans live on credit cards, and their quality of life ___________, not how much they can earn.A. is measured by how much can they loanB. is measured by how much they can loanC. is measured by how they can loanD. is measured by how can they loan9. Whatever I say or whatever I do was viewed through the politics of race, faith, and original nationality, so __________.A. my setbacks areB. my setback wereC. were my setbacksD. are my setbacks10. People in the community hope all the measures against air pollution, ________ suggested by the local government, will be seriously considered here.A. whileB. sinceC. thatD. as11. It was a worthwhile attempt ________ it failed to achieve its purpose that we had hoped for.A. in the endB. now thatC. all at onceD. even though12. For years, scientists have debated the ________ dangers of building another nuclear plant after the terrible accident.A. availableB. potentialC. fascinatingD. genuine13.He makes his students ________ knowledge through various kinds of interesting activities.A. studyB. learnC. achieveD. acquire14. We teachers do not consider it wise to ________ our students with all sorts of exams, tests and quizzes.A. loadB. annoyC. sampleD. explore/ {& n4 S+ e9 |( m15. I'll be happy to help you, ________ you won't take up too much of my time.A. as well asB. as long asC. as far asD. as soon as16. This kind of exercise will ________ your creativity, renew your energy, and unlock your potential.A. bindB. yieldC. embraceD. stimulate17. Don't take someone you get to know from the Internet to your house no matter how ________ he sounds.- w6 O, J8 H, K' K! M8 E9 \A. bold4B. genuineC. flexibleD. available18. Smart phones –with cameras and color screens –can ________ images and data using wireless network technology.A. evolveB. departC. transmitD. assure19. The university decided to increase the ________ of the lecture hall, which has only 200 seats.$ K4 T' ?# U% x+ ~+ h$ ^A. abilityB. capacityC. facilityD. faculty20. Having practiced so many times, I feel very ________ of my ability to deliver the presentation successfully.8 P- w6 `' f( }3 q1 ?, l* zA. confidentB. enthusiasticC. incredibleD. satisfiedII.填空题: 用do或make的适当形式填空。

西南大学网络与继续教育学院课程考试试题卷类别：网教2020年5月课程名称【编号】：高级英语一【0848】A卷大作业满分：100 分要答案：wangjiaofudaoExercise 1Choose any one of the following passages and then translate it into Chinese. Passage 1 (From Unit 1)Failure is a better teacher than success since success always encourages repetition of old behavior whereas failure can prompt fresh thinking, a change of direction. After twelve years of studying ballet a friend of mine applied to join a professional company. She was turned down. “Would further training help?”she asked. The ballet master shook his head. “You will never be a dancer,”he said. “You haven’t the body for it.”In such cases, the way to use failure is to face the reality (face the music) courageously, asking “What have I left? What else can I do?”My friend put away her toe shoes and moved into dance therapy, a field where she’s both competent and useful.Passage 2 (From Unit 4)!On the positive side, there are a number of things worth recommending, such as the following:0 l1. Ask others about themselves; at the same time, be on guard not to talk too much about yourself.2. Keep you voice modulated. Laugh when moved to do so but avoid raucous laughter, and don’t giggle at your own remarks.:3. Listen to whoever is speaking and make it apparent that you are listening by not letting your eyes wander or your attention be diverted.4. If another person joins the conversation, bring him briefly up to date on what is being discussed and encourage him to join the conversation.5. At dinner parties, break the ice by turning to the person sitting next toyou and asking some question that is calculated to elicit an answer that can then become the subject of conversation. It does not make much difference what you ask if it succeeds in getting other person to speak.Passage 3 (From Unit 15)The race will intensify year by year —with far-reaching impacts on society. Who “owns”the bottom of the ocean and the marine life that covers it? As ocean mining becomes feasible and economically advantageous, we can expect the resource balance among nations to shift. The Japanese already extract 10,000,000 tons of coal each year from underwater mines; tin is already being ocean-mined by Malaysia, Indonesia and Thailand. Before long nations may go to war over patches of ocean bottom. We may also find sharp changes in the rate of industrialization of what are now resource-poor nations.Exercise 2 Skimming and Scanning (10x3=30);In this part, you are required to go over the passage quickly.For questions 1-7, choose the best answer from the four choices marked A, B, C and D.For questions 8-10, complete the sentences with the information given in the passage.1. What is the top reason Americans travel in the summertime?A. School is over.B. They think they deserve a rest.C. Summer is the season to travel.D. The weather is great.2. Every year, most companies _______.A. require a business tripB. insist that workers commuteC. have employees travel togetherD. provide a vacation for workers ) M F& M& R# c7 Q& S3. Many Americans treat their pets as _______. :A. their family membersB. very common thingsC. their own propertyD. very usual things4. According to the passage, some fancy hotels could provide for your pets the following EXCEPT _______.A. good accommodationB. some well-served foodC. a soft bedD. delicious Chinese meals5. It’s discovered that interaction with pet animals is good for health as they can help to _______. ' ^( Y0 u6 `4 ~! z5 v* oA. guard against unwelcome visitorsB. catch unwanted miceC. lower blood pressureD. keep company6. Pet can encourage social relationship by _______.A. acting as basic element to American cultureB. providing a subject for chatting 8C. becoming members for the familyD. having a friendly appearance(7. Traditionally, if a young man wants to get married to his girlfriend he is supposed to _______.A. propose to his friend at the right timeB. ask his girlfriend to marry him in a romantic wayC. get the permission of his girlfriend’s motherD. get the permission of his girlfriend’s father8. The counseling during engagement can prepare a couple for ___________.9. During the ceremony the bride usually wears a beautiful, long white wedding dress while the groom wears ___________.10. When the bride and groom begin to exchange their rings, it is a symbol of their ___________.A Few Aspects of American LifeTravelIt’s summertime. For many Americans, this is the season to travel. Why? Because school is over and the weather is great. And most of all, they believe they deserve a break. When Americans take a break, they often head for their favorite vacation spot.Throughout their history, Americans have been people on the move. The early immigrants had to travel to get to the New World. Once they arrived, they settled along the East Coast. But they weren’t content to stay here. Explorers and traders journeyed to the unknown western territories. Later, settlers moved west todevelop new areas. As a result of this west movement, Americans eventually occupied the whole continent—from the Atlantic to the Pacific. Even today, Americans seem unable to stay put. Research says that average American moves every five years.Americans are used to traveling. Some people make long-distance commuting to work daily. Their jobs may even require them to take frequent business trips. Most companies provide an annual vacation for their employees, and people often use that time to travel. Some people just visit friend or relatives in distant states. Some go on low-budget weekend trips and stay in economy motels. Those with more expensive tastes choose luxurious hotels. Camping out in the great outdoors appeals to adventurous types. Some travel in recreational vehicles to camp out in comfort, while others “rough it”by sleeping in tents. Families often plan their trips with the kids in mind. More and more “family friendly”hotels offer special programs for children.Americans love pets. Many pet owners treat their pets as a part of the family. You might say Americans treat their pets like they treat their children—sometimes even better.In America, there are more households with pets than those with children. At least 43 percent of US homes have pets of some sort. Usual creatures, such as monkeys, snakes and even wolves, find a home with some Americans. More common pets include fish, mice and birds. But the all-time favorites are cats and dogs, even at the White House. Americans sometimes have strong feelings about whether dogs or cats make better pets. “Dog people”and “cat people”often enjoy friendly competition.Many grocery stores in America sell pet foods. Pets can even accompany their owners on vacation. Fancy hotels are beginning to accommodate both man and animal. Animal guests at Four Seasons Hotels can enjoy delicious meals served on fine china and sleep in soft beds.The average American enjoys having pets around, and for good reason.Researchers have discovered that interacting with animals lowers a person’s blood pressure. Dogs can offer protection from robbers and unwelcome visitors. Cats can help rid the home of unwanted mice. Little creatures of all shapes and sizes can provide friendship and love. In many cases, having a pet prepares a young couple for the responsibilities of parenthood. Pets even encourage social relationships: they give their owners an appearance of friendliness, and they provide a good subject of conversation.Pets are as basic to American culture as hot dogs or apple pie. To Americans, pets are not just property, but a part of the family.Marriage“I do.”To Americans, these two words carry great meaning. They can even change your life, especially if you say them at your own wedding. Making wedding promises is like signing a contract. Now Americans don’t really think marriage is a business deal. But marriage is a serious business.It all begins with engagement. Traditionally, a young man asks the father of his sweetheart for permission to marry her. If the father agrees, the man later proposes to her. Often he tries to surprise her by asking her to marry him in a romantic way.Sometimes the couple just decides together that the time is right to get married. They may be engaged for weeks, months or even years. As the big approaches, bridal showers and bachelor’s parties provide many gifts. Today many couples also receive counseling during engagement. This prepares them for the challenges of married life.At last it’s time for the wedding. Although most weddings follow long-held traditions, there’s still room for individualism. For example, the usual place for a wedding is in a church. But some people get married outdoors. A few even have the ceremony while skydiving or riding on horseback! The couple may invite hundreds of people or just a few close friends. They choose their own style of colors, decorations and music during the ceremony. But some things rarely change. The bride usuallywears a beautiful, long white wedding dress. She traditionally wears “something old, something new, something borrowed and something blue”. The groom wears a formal suit. Relatives and close friends participate in the ceremony.6 {$ c6 o: V( y& ?As the ceremony begins, the groom stands with the minister, facing the audience. Music signals the entrance of the beautiful bride. Nervously, the young couple repeats their promises. Traditionally, they promise to love each other “for better, for worse, for richer, for poorer, in sickness and in health”. But sometimes the couple composes their own promises. They give each other a gold ring as a symbol of their marriage promise. Finally the minister announces the big moment: “I now pronounce you man and wife. You may kiss your bride!”Exercise 3 Writing (1x40=40)'Write a composition of about 200 words on any one of the following topicsife without InternetMy Views on Studying AbroadTime and Tide Wait for No ManYou are to write in three paragraphs.In the first paragraph, state clearly what your view is.)In the second paragraph, support your view with details."In the last paragraph, bring what you have written to a natural conclusion with a summary or suggestion.:Marks will be awarded for content, organization, grammar and appropriateness. Failure to follow the instructions may result in a loss of marks.。

西南大学培训与继续教育学院课程一、单项选择题(本大题共10小题，每道题3.0分，共30.0分)1.原始社会教育的基本特征（）、非独立性、同一性。

A.直接性B.间接性C.独立性D. 统一性2.以引导探究为主的教学方法被称为（）。

A.发现法B.演示法C.参观法D.考察法3.我国社会主义教育目的的理论基础是（）。

A.马列主义B.毛泽东思想C.马克思主义关于人的全面发展学说D.邓小平理论4.个体社会化包括三个方面的内容：个体思想意识的（）、个体行为的社会化、个体职业角色和身份的社会化。

A.个体化B.集体化C.观点化D.社会化5.古代社会教育的基本特征：（）、专制性、保守性、非生产性。

A.相同性B.等级性C.差别性D.原始性6.道家，先秦时期的重要思想派别，以（）、庄子、杨朱为主要代表。

A.老子B.孔子C.孟子D.荀子7.（）是我国教育目的的根本出发点。

A.为人民服务B.坚持社会主义方向性C.为国家培养合格的人材D.一切为为学生的身心发展8.在学校的正式课程中，主要有两种课程类型即学科课程和（）。

A.活动课程B.学习课程C.劳动课程D.课外课程9.人的发展的特点（）、可教性、主观能动性。

A.规定性B.差异性C.相同性D.可塑性10.（）是最早实施教师资格制度的国家。

A.美国B.德国C.中国D.法国二、判断题(本大题共15小题，每道题2.0分，共30.0分)1.职业是社会化的集中体现，社会职业分工是社会发展的必然要求和发展趋势，也是社会发展是否成熟的重要标志。

（）对错2.康德不是第一个把教育学作为一门学科在大学正式讲授的。

( )对错3.教学以师生的交往为一般存在形态，因此，教学不是师生之间的一种特殊交往形式。

（）对错4.唐代将儒经分为大经、中经、小经，大经包括《礼记》《左传》，中经包括《诗经》《周礼》《仪礼》；小经包括《周易》《尚书》《春秋公羊传》和《春秋谷梁传》，不包括有《孝经》和《论语》。

（）对错5.教育不产生于人的自身发展需要的两个方面：：一是生存的需要；另一个则是群体协调的需要。

西南大学网络与继续教育学院课程考试试题卷类别：网教课程名称【编号】：论文写作【0870】A卷大作业满分：100 分要答案：wangjiaofudao一、简答题(共2个小题，20分，每题10分)简述本科毕业论文选题时，应充分考虑哪些主客观条件。

简要列出毕业论文摘要的主要组成部分，如研究对象等。

二、判断下列说法是否正确，正确的填T，错误的填F (共6个小题，18分，每小题3分)毕业论文的目录需要独立成页，包括论文章节标题，按层级编号。

( )学位论文可以只是个人的思考和经验总结，无需借鉴他人研究成果。

（）对引文有内容上和形式上的双重要求。

引用对象应该是权威人物的、有代表性的观点。

（）学位论文的文献综述应该尽量全面，概括出研究问题的研究历史和现状。

（）学位论文的参考文献里只需列出作者、书名和出版时间即可。

（）“论中学生英语学习的心理障碍”与“论中学生英语阅读理解的心理障碍”相比，前者比后者的论证范围更大，更适合作为本科学位论文选题。

（）三、材料综合题(共6个小题，62分)材料A：国内一篇学术期刊文章正文的节选;阅后完成以下任务：1、排序填空题(9分)论文摘要（提要）是论文的缩影，摘要通常由主题句、主体句、结束句构成（参阅教材p.95-98）。

请将以下三句话重新排序，以形成材料A一文的合理摘要。

重新排列后的顺序为。

2、填空(3分)根据材料A一文的标题和提要，该文的关键词应该是“语言生态”、“语言规划”、“”和“大数据”。

材料B：材料B是材料A《大数据时代语言生态研究》一文参考文献的节选-阅后完成以下任务：3、排序填空题(15分)将材料B中的5个参考文献条目按照作者姓名的字母顺序整理先后顺序，注意处理多个文献涉及到同一作者的特殊情况。

重新排列后的顺序为。

4、选择填空题(6分)在材料A第2节“语言生态观”的第一段中，作者有两处引用了他人的观点，并且随文注释了出处，请指出这两处文献在材料B中对应的条目序号分别是和。