2013作业3答案
2013电大数据库原理与应用作业答案3
一、单项选择题（共 20 道试题，共 40 分。
）1. 在T-SQL语法中，Select语句的完整语法较复杂，但至少包括的部分为（）。
A. Select，IntoB. Select，FromC. Select，GroupD. 仅Select2. 下列（）统计函数可以计算平均值。
A. SumB. AvgC. CountD. Min3. 下列叙述中不是视图的特点的是（）。
A. 为用户集中数据B. 降低数据库设计的复杂性C. 存储数据D. 组织数据以便导出到其他应用程序中4. （）必须确保索引键不包含重复的值。
A. 聚集索引B. 非聚集索引C. 索引视图D. 唯一索引5. 对于Update语句的实现说法正确的是（）。
A. Update一次只能修改一列的值B. Update只能修改不能赋值C. Update可以指定要修改的列和赋予的新值D. Update不能加Where条件6. T-SQL对标准SQL的扩展主要表现为（）。
A. 加入了程序控制结构和变量B. 加入了建库和建表语句C. 提供了分组（Group by）查询功能D. 提供了Min、Max等统计函数7. SQL Server的字符型系统数据类型主要包括（）。
A. Int、Money、CharB. Char、Varchar、TextC. Datetime、Binary、IntD. Char、Varchar、Int8. 在T-SQL语法中，用来插入数据的命令和用于更新的命令分别是（）。
A. Insert，UpdateB. Update，InsertC. Delete，UpdateD. Create，Insert Into9. 执行哪一个系统存储过程，可以查看视图的定义信息（）。
A. sp_helptextB. sp_dependsC. sp_helpD. sp_rename10. 下列的SQL语句中，（）不是数据定义语句。
A. Create TableB. Drop ViewC. Create ViewD. Grant11. 下列关于视图中的数据，描述正确的是（）。
心理咨询师2013年11月三级技能真题与答案
多选：7、“有可能吧！她爸爸在她小学的时候就和我离婚了„„对女儿就没育过什么好影
响”。求助者的多话属于( )。
(A)宣泄型
(B)表现型
(C)表白型
(D)外向型
单选：8、“您说我是不是对女儿太苛刻了？我在来您这儿之前也读过一些心理学书，您说
我这是不是就叫‘绝对化要求’？是不是违反了‘黄金规则’”。这段话中求助者
心理咨询师：您谈的好像是合理情绪疗法，我对这个疗法不是很了解。
求助者：您不了解这个疗法呀！那看来„„
心理咨询师：看来我的水平不高是不是？但您问题的原因我还是清楚的！您刚才一直指责
前夫不负责任、不像个父亲，那我问您：登记表上写明您是 36 岁，您女儿是
17 岁，您反对女儿早恋，但您是多大年龄谈恋爱的？您给女儿做了什么榜样？
每小题有一个或多个答案正确，请在答题卡上将所选答案的相应字母涂黑。错选、少选、
多选，该题不得分。
案例一： 一般资料：求助者，女性，36 岁，无固定职业 案例介绍：求助者因与女儿发生矛盾，两个多月以来烦躁、易怒，精神痛苦难以自行
解脱，主动前来求助。 下面是心理咨询师与求助者之间的一段咨询对话。
心理咨询师：您好！请问您需要我在哪方面向您提供帮助？ 求助者：我最近心里烦得很，搞得我吃不下饭、睡不着觉。
广州寄锦教育科技有限公司
2013 年 11 月三级心理咨询师考试真题
科 目 代 码 ： 230
2013 年 11 月 人力资源和社会保障部 国家职业资格全国统一鉴定
职 业：心理咨询师 等 级：国家职业资格三级
卷册二：技能选择题 案例问答题
注意事项：1、考生首先将自己的姓名、准考证号等用钢笔、圆珠笔等写在试卷册、答
心理咨询师：是。放松训练是行为和认知疗法中使用最广的技术，虽然没有什么实验基础， 但这种方法简便易行、实用有效，也不受时间、地点的限制，还能够提高你 改善焦虑症状的速度。
流体力学作业3 答案
作业3 答案 (第5章、第6章)第5章一、选择题1. 管道中液体的雷诺数与（ D ）无关。
A. 温度B. 管径C. 流速D. 管长2. 某圆管直径d=30mm ，其中液体平均流速为20cm/s 。
液体粘滞系数为0.0114cm 3/s ，则此管中液体流态为（ B ）。
A. 层流B. 层流向紊流过渡C.紊流3.等直径圆管中紊流的过流断面流速分布是 （ D ）A 呈抛物线分布 B. 呈对数线分布C.呈椭圆曲线分布D. 呈双曲线分布4.等直径圆管中的层流，其过流断面平均流速是圆管中最大流速的（ C ）A 1.0倍 B.1/3倍 C. 1/4倍D. 1/2倍5.圆管中的层流的沿程损失与管中平均流速的（ B ）成正比.A. 一次方B. 二次方C. 三次方D. 四次方6.圆管的水力半径是 ( A )A. d/2B. d/3C.d/4D. d/5.7、 谢才公式中谢才系数的单位是（ C ）A. 无量纲B.s m 21C. s m 23D. s m 28. 判断层流和紊流的临界雷诺数是 （ C ）A.上临界雷诺数B.下临界雷诺数C.上下临界雷诺数代数平均D.上下临界雷诺数几何平均二、判断题1. 层流的沿程水头损失系数仅与雷诺数有关。
( 正确 )2.壁面光滑的管道一定是水力光滑管。
( 错误 )3.在过流断面突变处一般发生局部水头损失。
( 正确 )4. 等直径圆管中的层流,其过流断面平均流速是圆管中最大流速的1/2倍（正确 ） 5．流体内切应力方向与流体运动方向相同。
（ 错误 ）6．阻力平方区内阻力系数与雷诺数无关。
（ 正确 ）三、简答题1. 圆管中层流与紊流，其流速分布有什么不同？答: 层流为抛物线分布,紊流为对数曲线分布.(也可以画图)2. 简述尼古拉兹实验中沿程阻力系数λ的变化规律。
答: 尼古拉兹实验揭示了沿程阻力系数λ的变化规律,文字表述或数学公式表述.层流:(Re)f =λ;水力光滑区: (Re)f =λ;过渡粗糙区: )(Re,d K f =λ 粗糙区(阻力平方区) : )(dK f =λ . 3.写出管流和明渠水流雷诺数的表达式，并说明其层流、紊流的判别标准？答: 管流:νvd=Re 2000Re <(层流) 2000Re > (紊流)明渠水流: νvR =Re 500Re <(层流) 500Re > (紊流)4.雷诺数Re 的物理意义？它为什么能用来判别流态？答: 雷诺数实质是反映粘性力与惯性力之比。
2013秋季开放大学(电大)英语2 第三次网上作业答案大全.
、I ’ ve always enjoyed ________.A.to swimB.swimmingC.swim2、 You can put the letters into the ________ box.A.wooden large bluerge blue woodenC.blue large wooden3、You ’ re driving ________, slow down!A.too fastB.very slowC.not fast4、I ’ m going to buy Mary a birthday gift. Do you have ________ in mind?A.special somethingB.special anythingC.anything special5、 ________ the earth is round, why do we not fall off?A.BecauseB.ForC.Since6、A: The exam was very easy, wasn’ t it? B: Yes, but I don’ t think ________ could pass it.A.somebodyB.everybodyC.anybody7、 They must do ________ duty and we must do ________.A.their … oursB.their … ourC.theirs … ours8、 After they finished ________ football, they went for a drink in a pub.A.playingB.to playC.play9、 Is it difficult to learn to ________ Tai Chi?A.doB.playC.go10、 Her article is ________ in her class.A.betterB.bestC.the best、 He used to shout ________ me when I was a child.A.onB.atC.after2、 English is the language ________ most people in Shanghai want to learn to speak.A.whoB.thatC.where3、I ’ m going to ________ a flat near the company I’ m working at.A.hireB.borrowC.rent4、 The teacher asked me to sit down, and ________.A.so did IB.did I soC.I did so5、 The teachers ________ teach us in STVU are good, for they all have a deep sense of responsibility.A.whoseB.whoC.whom6、 The teacher asked ________ the window was smashed by the big boy.A.ifB.thatC.did7、 A: Did the reporter ask about the new restaurant? B: Yes. He asked ________.A.when it would openB.when will it openC.when it will open8、 Please look for a zebra-crossing down there. You ________ cross the street here.A.are not allowed toB.don ’ t allowed toC.are not allowed9、 Would you like me to help you ________ a new dress for the meeting?A.pick forB.pick aboutC.pick out10、 Mr. Jones, ________ came here this morning, is a detective.A.whichB.thatC.whoI have to go now. I have to pick ________ my son from school.A.inB.withC.up2、 A concert will be held in the school hall ________ 4 pm ________ Tuesday.A.on … atB.in … inC.at … on3、 His story is ________ than yours.A.interestingB.more interestingC.most interesting4、 They are going to ________ a company to organize the gig.A.rentB.hireC.borrow5、 We have to wait for a while because Mum ________ cooking yet.A.has finishedB.didn ’ t finishC.hasn ’ t finished6、 Oh, Jack has broken his leg, we must ________ and take him to hospital at once.A.stop play footballB.stop to play footballC.stop playing football7、Sorry, I’ m not free this evening. ________ dinner with Mike.A.I will haveB.I ’ m havingC.I have8、 On December 3, 2002, Shanghai ________ the bid for the World Exposition 2010.A.winB.wonC.will win9、 A: What about a drink? B: I’ d rather ________.A.have something eatB.have something to eatC.to have something to eat10、 Is it difficult to learn to ________ Tai Chi?A.doB.playC.goShe ________ to town last week.A.goesB.wentC.has gone2、 A: Has Peter forgot ________? B: Yes, he has forgot ________.A.something … anythingB.anything … somethingC.anything … anything3、 I was ________ my ________ to school when I saw the accident.A.on / wayB.in / wayC.on / time4、 They are going to ________ a company to organize the gig.A.rentB.hireC.borrow5、 Mrs. Brown bought ________ pullover in the shop.A.a white beautiful woolenB.a beautiful white woolenC.a beautiful woolen white6、You ’ re driving ________, slow down!A.too fastB.very slowC.not fast7、I ’ ve lived in Ch ongqing ________ twenty years.A.inB.forC.since8、I ’ m going to buy Mary a birthday gift. Do you have ________ in mind?A.special somethingB.special anythingC.anything special9、 ________ the earth is round, why do we not fall off?A.BecauseB.ForC.Since10、 My brother told me ________ his trip to Scotland.A.onB.withC.about1、 ________ he failed several times, ________the young scientist still kept on making his experiments.A.Although … butB.Although … andC.Though … /2、 Lin Hua ________ to Tibet by plane three times this year.A.goesB.has goneC.has been3、 Listen! The children ________ songs.A.singB.have sungC.are singing4、 A: When did he ________ the shirt? B: He bought it yesterdayA.boughtB.buyC.buys5、I ’ m tired. I haven’ t got ________ energy to go to the gym today.A.enoughB.manyC.little6、 The blouse is ________ large for me.A.everB.enoughC.too7、A: Could I see the manager now? B: I’ m sorry you can’ t. He has ________ to Hong Kong.A.beenB.goneC.stayed8、 On December 3, 2002, Shanghai ________ the bid for the World Exposition 2010.A.winB.wonC.will win9、 My brother told me ________ his trip to Scotland.A.onB.withC.about10、 After they finished ________ football, they went for a drink in a pub.A.playingB.to playC.play1、 A concert will be held in the school hall ________ 4 pm ________ Tuesday.A.on … atB.in … inC.at … on2、 His story is ________ than yours.A.interestingB.more interestingC.most interesting3、 Lin Hua ________ to Tibet by plane three times this year.A.goesB.has goneC.has been4、 Listen! The children ________ songs.A.singB.have sungC.are singing5、A: I’ m sorry to have kept you waiting. B. Oh, not at all, I ________ here only a few minutes.A.have beenB.wasC.will be6、 Mrs. Brown bought ________ pullover in the shop.A.a white beautiful woolenB.a beautiful white woolenC.a beautiful woolen white7、Sorry, I’ m not free this evening. ________ dinner with Mike.A.I will haveB.I ’ m havingC.I have8、 After they finished ________ football, they went for a drink in a pub.A.playingB.to playC.play9、 I ________ this old vase in an antique shop.A.came atB.came acrossC.came into10、 Mrs. Jones is a friend of ________.A.Mary mother’ sB.Mary ’ s motherC.Mary ’ s mother’ s、 John ate a big meal ________ he said he wasn’ t hungry.A.becauseB.althoughC.if2、 A concert will be held in the school hall ________ 4 pm ________ Tuesday.A.on … atB.in … inC.at … on3、I ’ ve always enjoyed ________.A.to swimB.swimmingC.swim4、 Mrs. Brown bought ________ pullover in the shop.A.a white beautiful woolenB.a beautiful white woolenC.a beautiful woolen white5、 You can put the letters into the ________ box.A.wooden large bluerge blue woodenC.blue large wooden6、Let ’ s have dinne r together ________ next week.A.sometimesB.some timeC.some times7、My uncle ________ to see us. He’ ll be here soon.A.is comingesC.came8、A: What about a drink? B: I’ d rather ________.A.have something eatB.have something to eatC.to have something to eat9、 Her article is ________ in her class.A.betterB.bestC.the best10、 Mrs. Jones is a friend of ________.A.Mary mother’ sB.Mary ’ s motherC.Mary ’ s mother’ s、 I have to go now. I have to pick ________ my son from school.A.inB.withC.up2、 My uncle ________ until he was fifty.A.got marriedB.didn ’ t get marriedC.wouldn ’ t get married3、 They are going to ________ a company to organize the gig.A.rentB.hireC.borrow4、 A: What do you think of my new car? B: It is ________ great.A.manyB.veryC.really5、 Mrs. Brown bought ________ pullover in the shop.A.a white beautiful woolenB.a beautiful white woolenC.a beautiful woolen white6、 The blouse is ________ large for me.A.everB.enoughC.too7、 The child is ________ the nurse who is looking after her. d ford afterd with 8、I’m going to buy Mary a birthday gift. Do you have ________ in mind? A.special something B.special anything C.anything special 9、________ the earth is round, why do we not fall off? A.Because B.For C.Since 10、China ________ the WTO and ________ a new member of it in 2001. A.joined…became B.joins….becomes C.will join…become 、单选题 1、________ he failed several times, ________the young scientist still kept on making his experiments. A.Although…butB.Although…andC.Though… / 2、A: Has Peter forgot ________? B: Yes, he has forgot ________. A.something…anything B.anything…somethingC.anything…anything 3、Paul ________ to learn French when he was 11. A.began B.begins C.begin 4、A: Would you like to join us to go bowling? B: I’d rather ________ at home. A.stay B.to stay C.staying 5、I’ve always enjoyed ________. A.to swimB.swimmingC.swim 6、A: Can I give you a lift? B: No, thanks. I’d ________ walkhome. A.prefer to B.prefer C.want 7、Mrs. Brown bought ________ pullover in the shop.A.a white beautiful woolenB.a beautiful white woolenC.a beautiful woolen white 8、You can put the letters into the ________ box.A.wooden large bluerge blue woodenC.blue large wooden 9、The child is________ the nurse who is looking after her. d for d after d with 10、I ________ this old vase in an antique shop. A.came at B.came across C.came into。
计算机应用基础-作业3
选择题1(6分)、在Word的编辑状态中，如果要输入希腊字母Ω，则需要使用_________菜单。
A、开始B、插入C、设计D、视图参考答案：B2(6分)、在Word的编辑状态打开了一个文档，对文档作了修改，进行关闭文档操作后_________。
A、文档被关闭，并自动保存修改后的内容B、文档不能关闭，并提示出错C、文档被关闭，修改后的内容不能保存D、弹出对话框，并询问是否保存对文档的修改参考答案：D3(6分)、word在编辑一个文档完毕后，要想知道它打印后的结果，可使用（）功能。
A、打印预览B、模拟打印C、提前打印D、屏幕打印参考答案：A4(6分)、在Word 2013中打开某个文件后，若希望将当前文件中所有的“语文”二字改为“数学”二字，最好的操作方法是（）。
A、利用“查找和替换”功能完成修改操作B、利用“查找和选择”功能完成修改操作C、利用“自动更正”功能完成修操作D、利用“复制”功能完成修改操作参考答案：A5(6分)、使图片按比例缩放应选用（）A、拖动中间的句柄B、拖动四角的句柄C、拖动图片边框线D、拖动边框线的句柄参考答案：B6(6分)、下列文件中，（）是Word 类型的文档。
A、Text.txtB、Text.docxC、Text.pptxD、Text.xlsx参考答案：B7(6分)、在Word的编辑状态，打开文档"ABC"，修改后另存为"ABD"，则文档ABC_________。
A、被文档ABD覆盖B、被修改未关闭C、被修改并关闭D、未修改被关闭参考答案：D8(6分)、在Word中，下述关于分栏操作的说法，正确的是（）。
A、栏与栏之间不可以设置分隔线B、任何视图下均可看到分栏效果C、设置的各栏宽度和间距与页面宽度无关D、可以将指定的段落分成指定宽度的两栏参考答案：D9(6分)、在Word 2013中当前输入的文字被显示在（）。
A、文档的尾部B、鼠标指针的位置C、插入点位置D、当前行的行尾参考答案：C10(6分)、在word中，如果要在文档中层叠图形对象，应执行（）操作A、“绘图”工具栏中的“叠放次序”命令B、“绘图”工具栏中的“绘图”菜单中“叠放次序”命令C、“图片”工具栏中的“叠放次序”命令D、“格式”工具栏中的“叠放次序”命令参考答案：B11(6分)、在Word 2013中，给每位家长发送一份《学生期末考试成绩通知单》，用（）选项卡最简便。
2013电大市场营销学网络形考作业答案(1——3).
第一套试卷[ 第 1 题 ]( 单选题 )1-1 ．市场营销学是一门建立在经济科学、行为科学和现代管理理论基础上的（）。
A.理论科学B.应用科学C.实践科学D.管理科学[ 第 2 题 ]( 单选题 )1-2 ．福特汽车公司在20 世纪初曾致力于汽车的大规模生产，努力降低成本以扩大销售，这种经营哲学是（）。
A.产品观念B.生产观念C.推销观念D.市场观念[ 第 3 题 ]( 单选题 )1-4 ．威胁水平和机会水平都高的业务，被叫做（）。
A.理想业务B.冒险业务C.成熟业务D.困难业务[ 第 4 题 ]( 单选题 )1-3 ．皮革价格上涨了，却不会影响皮鞋的需求水平，这说明产业市场的需求是（）。
A.衍生需求B.波动的需求C.缺乏弹性的需求D.互惠需求[ 第 5 题 ]( 单选题 )1-5 ．顾客总价值与顾客总成本之间的差额就是（）。
A.企业让渡价值B.企业利润C.顾客让渡价值D.顾客利益[ 第 6 题 ]( 单选题 )1-6 ．市场营销者要了解顾客的态度，了解顾客是怎样看待他们的产品和服务的，了解顾客是如何看待他们的竞争对手的，了解哪些客观因素对他们有利等等，他就需进行（）。
A.市场营销规划B.市场营销组合设计C.市场营销调研D.预测市场需求[ 第 7 题 ]( 单选题 )1-7 ．营销人员在互联网上发布调查问卷，进行某种产品购买意向的摸底，这种调查属于（）。
A.询问调查法B.观察调查法C.实验调查法D.文案调查法[ 第 8 题 ]( 单选题 )1-8 ．通过各种信息渠道，不断收集信息，进行加工汇总，从而了解和掌握市场需要的系统是（）。
A.市场营销信息系统B.单一来源调研系统C.市场营销数据库系统D.决策支持系统E.市场营销情报系统[ 第 9 题 ]( 多选题 )1-1 ．以企业为中心的市场营销管理哲学包括（）。
A.生产观念B.销售观念C.市场营销观念D.产品观念E.社会营销观念[ 第 10 题 ]( 多选题 )1-2 ．市场增长率 / 市场占有率矩阵将SBU（战略业务单位）划分为（）几种类型。
高三数学__选修部分__课后作业及详细解答(3)
课后作业基础巩固强化一、选择题＝{x |x －2x －1<1}，则M ∩N 等于( )A ．{x |1<x <32} B ．{x |12<x <1}C ．{x |－12<x <32} D ．{x |－12<x <32，且x ≠1}[答案] A[解析] 由|2x －1|<2得－2<2x －1<2，则－12<x <32；由x －2x －1<1得(x －2)－(x －1)x －1<0，即－1x －1<0，则x >1.所以M ∩N ＝{x |1<x <32}，选A.2．不等式|x －2|－|x －1|>0的解集为( ) A ．(－∞，32) B ．(－∞，－32) C ．(32，＋∞) D ．(－32，＋∞) [答案] A[解析] 原不等式等价于|x －2|>|x －1|，则(x －2)2>(x －1)2，解得x <32.3．设集合A ＝{x ||x －a |<1，x ∈R }，B ＝{x ||x －b |>2，x ∈R }．若A ⊆B ，则实数a 、b 必满足( )A ．|a ＋b |≤3B ．|a ＋b |≥3C ．|a －b |≤3D ．|a －b |≥3[答案] D[解析] 由题意可得集合A ＝{x |a －1<x <a ＋1}，集合B ＝{x |x <b －2或x >b ＋2}，又因为A ⊆B ，所以有a ＋1≤b －2或b ＋2≤a －1，即a －b ≤－3或a －b ≥3.所以选D.4．(文)若不等式|ax ＋2|<4的解集为(－1,3)，则实数a 等于( ) A ．8 B ．2 C ．－4 D ．－2[答案] D[解析] 由－4<ax ＋2<4，得－6<ax <2. ∴(ax －2)(ax ＋6)<0，其解集为(－1,3)，∴a ＝－2. [点评] 可用方程的根与不等式解集的关系求解．(理)对于实数x 、y ，若|x －1|≤1，|y －2|≤1，则|x －2y ＋1|的最大值为( )A ．5B ．4C ．8D ．7 [答案] A[解析] 由题易得，|x －2y ＋1|＝|(x －1)－2(y －2)－2|≤|x －1|＋|2(y －2)|＋2≤5，即|x －2y ＋1|的最大值为5.二、填空题5．(2013·天津)设a ＋b ＝2，b >0，则12|a |＋|a |b 的最小值为________． [答案] 34[解析] 因为12|a |＋|a |b ＝a ＋b 4|a |＋|a |b ≥a4|a |＋2b 4|a |·|a |b ＝a 4|a |＋1≥－14＋1＝34，当且仅当b 4|a |＝|a |b ，a <0，即a ＝－2，b ＝4时取等号，故12|a |＋|a |b 的最小值是34.6．(文)不等式log 3(|x －4|＋|x ＋5|)>a 对于一切x ∈R 恒成立，则实数a 的取值范围是________．[答案] (－∞，2)[解析] 由绝对值的几何意义知：|x －4|＋|x ＋5|≥9，则log 3(|x －4|＋|x ＋5|)≥2，所以要使不等式log 3(|x －4|＋|x ＋5|)>a 对于一切x ∈R 恒成立，则需a <2.(理)(2013·昆明重点中学检测)已知不等式2x －1≥15|a 2－a |对于x ∈[2,6]恒成立，则实数a 的取值范围是________．[答案] [－1,2][解析] 设y ＝2x －1，x ∈[2,6]，则y ′＝－2(x －1)2<0，则y ＝2x －1在区间[2,6]上单调递减，则y min ＝26－1＝25，故不等式2x －1≥15|a 2－a |对于x ∈[2,6]恒成立等价于15|a 2－a |≤25成立，等价于⎩⎨⎧a 2－a －2≤0，a 2－a ＋2≥0.解得－1≤a ≤2，故a 的取值范围是[－1,2]．7．(2013·陕西)设a ，b ∈R ，|a －b |>2，则关于实数x 的不等式|x －a |＋|x －b |>2的解集是________．[答案] (－∞，＋∞)[解析] ∵|x －a |＋|x －b |≥|a －b |>2， ∴|x －a |＋|x －b |>2恒成立，则解集为R .8．(2012·陕西)若存有实数x 使|x －a |＋|x －1|≤3成立，则实数a 的取值范围是________．[答案] －2≤a ≤4[解析] |x －a |＋|x －1|≥|a －1|，则只需要|a －1|≤3，解得－2≤a ≤4.9．若a >0，b >0，则p ＝(ab )a ＋b 2，q ＝a b ·b a 的大小关系是________． [答案] p ≥q[解析] ∵a >0，b >0，∴p ＝(ab )a ＋b2>0，q ＝a b ·b a >0， p q ＝(ab )a ＋b 2a b b a＝a a －b 2·b b －a 2＝⎝ ⎛⎭⎪⎫a b a －b 2.若a >b ，则ab >1，a －b 2>0，∴⎝ ⎛⎭⎪⎫a b a －b 2>1；若a <b ，则0<ab <1，a －b 2<0，∴⎝ ⎛⎭⎪⎫a b a －b 2>1；若a ＝b ，则ab ＝1，a －b 2＝0，∴⎝ ⎛⎭⎪⎫a b a －b 2＝1.∴⎝ ⎛⎭⎪⎫a b a －b 2≥1，即pq ≥1.∵q >0，∴p ≥q . [点评] 可使用特值法，令a ＝1，b ＝1，则p ＝1，q ＝1，有p＝q ；令a ＝2，b ＝4，有p ＝83＝512，q ＝24×42＝256，∴p >q ，故填p ≥q . 三、解答题10．(文)已知函数f (x )＝|x －7|－|x －3|. (1)作出函数f (x )的图象；(2)当x <5时，不等式|x －8|－|x －a |>2恒成立，求a 的取值范围． [解析] (1)∵f (x )＝⎩⎪⎨⎪⎧4，(x ≤3)，10－2x ，(3<x <7)，－4(x ≥7)，图象如图所示：(2)∵x <5，∴|x －8|－|x －a |>2，即8－x －|x －a |>2， 即|x －a |<6－x ，对x <5恒成立． 即x －6<x －a <6－x 对x <5恒成立，∴⎩⎨⎧a <6，a >2x －6.对x <5恒成立．又∵x <5时，2x －6<4，∴4≤a <6. ∴a 的取值范围为[4,6)．(理)已知函数f (x )＝|x ＋1|＋|x －3|. (1)作出函数y ＝f (x )的图象；(2)若对任意x ∈R ，f (x )≥a 2－3a 恒成立，求实数a 的取值范围． [解析] (1)①当x ≤－1时，f (x )＝－x －1－x ＋3＝－2x ＋2； ②当－1<x <3时，f (x )＝x ＋1＋3－x ＝4； ③当x ≥3时，f (x )＝x ＋1＋x －3＝2x －2. ∴f (x )＝⎩⎪⎨⎪⎧－2x ＋2，x ≤－1，4，－1<x <3，2x －2，x ≥3.∴y ＝f (x )的图象如图所示．(2)由(1)知f (x )的最小值为4，由题意可知a 2－3a ≤4，即a 2－3a －4≤0，解得－1≤a ≤4.故实数a 的取值范围为[－1,4].水平拓展提升一、填空题11．(文)(2013·石家庄模拟)若不等式|3x －b |<4的解集中的整数有且仅有1,2,3，则b 的取值范围为________．[答案] (5,7)[解析] ∵|3x －b |<4，∴b －43<x <b ＋43. 由题意得⎩⎪⎨⎪⎧0≤b －43<1，3<b ＋43≤4，解得5<b <7，∴b 的取值范围是(5,7)．(理)若a 、b 是正常数，a ≠b ，x ，y ∈(0，＋∞)，则a 2x ＋b 2y ≥(a ＋b )2x ＋y ，当且仅当a x ＝b y 时上式取等号．利用以上结论，能够得到函数f (x )＝2x ＋91－2x(x ∈(0，12))的最小值为________． [答案] 25[解析] 依据给出的结论可知f (x )＝42x ＋91－2x ≥(2＋3)22x ＋(1－2x )＝25等号在22x ＝31－2x，即x ＝15时成立．12．(文)(2013·山东师大附中三模)不等式|2x ＋1|＋|x －1|<2的解集为________．[答案] (－23，0)[解析] 当x ≤－12时，原不等式等价为－(2x ＋1)－(x －1)<2，即－3x <2，x >－23，此时－23<x ≤－12.当－12<x <1时，原不等式等价为(2x ＋1)－(x －1)<2，即x <0，此时－12<x <0.当x ≥1时，原不等式等价为(2x ＋1)＋(x －1)<2，即3x <2，x <23，此时不等式无解．综上，不等式的解集为－23<x <0.(理)不等式|x ＋log 3x |<|x |＋|log 3x |的解集为________． [答案] {x |0<x <1}[解析] 由对数函数定义得x >0，又由绝对值不等式的性质知，|x ＋log 3x |≤|x |＋|log 3x |，当且仅当x 与log 3x 同号时等号成立，∵x >0，∴log 3x >0，∴x >1，故原不等式的解集为{x |0<x <1}．二、解答题13．(文)(2013·福建理，21)设不等式|x －2|<a (a ∈N *)的解集为A ，且32∈A ，12∉A .(1)求a 的值；(2)求函数f (x )＝|x ＋a |＋|x －2|的最小值．[解析] (1)因为32∈A ，且12∉A ，所以|32－2|<a ，且|12－2|≥a ， 解得12<a ≤32.又因为a ∈N *，所以a ＝1.(2)因为|x ＋1|＋|x －2|≥|(x ＋1)－(x －2)|＝3，当且仅当(x ＋1)(x －2)≤0，即－1≤x ≤2时取到等号．所以f (x )的最小值为3.(理)(2013·福建龙岩模拟)已知函数f (x )＝|x －3|，g (x )＝－|x ＋4|＋m .(1)已知常数a <2，解关于x 的不等式f (x )＋a －2>0；(2)若函数f (x )的图象恒在函数g (x )图象的上方，求实数m 的取值范围．[解析] (1)由f (x )＋a －2>0得|x －3|>2－a ， ∴x －3>2－a 或x －3<a －2，∴x >5－a 或x <a ＋1. 故不等式的解集为(－∞，a ＋1)∪(5－a ，＋∞) (2)∵函数f (x )的图象恒在函数g (x )图象的上方， ∴f (x )>g (x )恒成立，即m <|x －3|＋|x ＋4|恒成立． ∵|x －3|＋|x ＋4|≥|(x －3)－(x －4)|＝7， ∴m 的取值范围为m <7.14．(2013·新课标Ⅱ理，24)设a 、b 、c 均为正数，且a ＋b ＋c ＝1，证明：(1)ab ＋bc ＋ac ≤13； (2)a 2b ＋b 2c ＋c 2a ≥1.[解析] (1)由a 2＋b 2≥2ab ，b 2＋c 2≥2bc ，c 2＋a 2≥2ca 得，a 2＋b 2＋c 2≥ab ＋bc ＋ca . 由题设得(a ＋b ＋c )2＝1， 即a 2＋b 2＋c 2＋2ab ＋2bc ＋2ca ＝1. 所以3(ab ＋bc ＋ca )≤1，即ab ＋bc ＋ca ≤13. (2)因为a 2b ＋b ≥2a ，b 2c ＋c ≥2b ，c 2a ＋a ≥2c ， 故a 2b ＋b 2c ＋c 2a ＋(a ＋b ＋c )≥2(a ＋b ＋c )， 即a 2b ＋b 2c ＋c 2a ≥a ＋b ＋c .所以a 2b ＋b 2c ＋c 2a ≥1. 15．(文)设不等式|2x －1|<1的解集是M ，a 、b ∈M . (1)试比较ab ＋1与a ＋b 的大小；(2)设max 表示数集A 中的最大数．h ＝max{2a ，a 2＋b 2ab ，2b }，求证：h ≥2.[解析] 由|2x －1|<1得－1<2x －1<1，解得0<x <1. 所以M ＝{x |0<x <1}．(1)由a 、b ∈M ，得0<a <1,0<b <1， 所以(ab ＋1)－(a ＋b )＝(a －1)(b －1)>0. 故ab ＋1>a ＋b .(2)由h ＝max{2a ，a 2＋b 2ab ，2b}，得h ≥2a ，h ≥a 2＋b 2ab ，h ≥2b， 所以h 3≥2a ·a 2＋b 2ab ·2b＝4(a 2＋b 2)ab ≥8，故h ≥2. (理)已知a 、b 为正实数．(1)求证：a 2b ＋b 2a ≥a ＋b ；(2)利用(1)的结论求函数y ＝(1－x )2x ＋x 21－x(0<x <1)的最小值． [解析] (1)证法一：∵a >0，b >0， ∴(a ＋b )(a 2b ＋b 2a )＝a 2＋b 2＋a 3b ＋b 3a≥a 2＋b 2＋2ab ＝(a ＋b )2. ∴a 2b ＋b 2a ≥a ＋b ，当且仅当a ＝b 时等号成立． 证法二：∵a 2b ＋b 2a －(a ＋b )＝a 3＋b 3－a 2b －ab 2ab＝a 3－a 2b －(ab 2－b 3)ab ＝a 2(a －b )－b 2(a －b )ab＝(a －b )2(a ＋b )ab. 又∵a >0，b >0，∴(a －b )2(a ＋b )ab≥0， 当且仅当a ＝b 时等号成立．∴a 2b ＋b 2a ≥a ＋b .(2)解：∵0<x <1，∴1－x >0，由(1)的结论，函数y ＝(1－x )2x ＋x 21－x≥(1－x )＋x ＝1. 当且仅当1－x ＝x 即x ＝12时等号成立．∴函数y ＝(1－x )2x ＋x 21－x(0<x <1)的最小值为1.考纲要求1．理解绝对值的几何意义，并了解下列不等式成立的几何意义及取等号的条件：(1)|a ＋b |≤|a |＋|b |(a ，b ∈R )．(2)|a －b |≤|a －c |＋|c －b |(a ，b ∈R )．2．会利用绝对值的几何意义求解以下类型的不等式：|ax ＋b |≤c ，|ax ＋b |≥c ，|x －c |＋|x －b |≥a .3．了解柯西不等式的几种不同形式，理解它们的几何意义，并会证明．4．通过一些简单问题了解证明不等式的基本方法：比较法、综合法、分析法、反证法．补充说明1．证明不等式常用的方法(1)比较法：依据a >b ⇔a －b >0，a <b ⇔a －b <0来证明不等式的方法称作比较法．其基本步骤：作差→配方或因式分解→判断符号→得出结论．(2)综合法：从已知条件出发，利用定义、公理、定理、性质等，经过一系列的推理论证得出命题成立的方法．它是由因导果法．(3)分析法：从要证明结论出发，逐步寻求使它成立的充分条件，直至所需条件为已知条件或一个明显成立的事实(定义、公理或已证明过的定理、性质等)，从而得出要证明的命题成立的方法，它是执果索因的方法．分析法与综合法常常结合起来运用，看由已知条件能产生什么结果，待证命题需要什么条件，两边凑一凑找出证明途径．常常是分析找思路，综合写过程．(4)反证法：证明不等式时，首先假设要证明的命题不成立，把它作为条件和其它条件结合在一起，利用已知定义、定理、公理、性质等基本原理进行正确推理，逐步推证出一个与命题的条件或已证明过的定理、性质，或公认的简单事实相矛盾的结论，以此说明原假设不正确，从而肯定原命题成立的方法称为反证法．(5)放缩法：证明不等式时，根据需要把需证明的不等式的值适当放大或缩小，使其化繁为简，化难为易，达到证明目的，这种方法称为放缩法．2．柯西不等式(1)一般形式：设a1、a2、…、a n、b1、b2、…、b n为实数，则(a21＋a22＋…＋a2n)(b21＋b22＋…＋b2n)≥(a1b1＋a2b2＋…＋a n b n)2.当且仅当b i＝0，或存在一个实数k，使得a i＝kb i(i＝1、2、…、n)时，等号成立．(2)二维形式的柯西不等式：①代数形式：设a、b、c、d均为实数，则(a2＋b2)(c2＋d2)≥(ac＋bd)2.上式等号成立⇔ad ＝bc .②向量形式：设α、β为平面上的两个向量，则|α||β|≥|α·β|.当且仅当β是零向量或存在实数k ，使α＝k β时，等号成立．③三角形式：设x 1、x 2、y 1、y 2∈R ，则x 21＋y 21＋x 22＋y 22≥(x 1－x 2)2＋(y 1－y 2)2，其几何意义是三角形两边之和大于第三边．3．排序不等式设a 1≤a 2≤…≤a n ，b 1≤b 2≤…≤b n 为两组实数，c 1、c 2、…、c n 为b 1、b 2、…、b n 的任一排列，则有a 1b n ＋a 2b n －1＋…＋a n b 1≤a 1c 1＋a 2c 2＋…＋a n c n ≤a 1b 1＋a 2b 2＋…＋a n b n ，且反序和等于顺序和⇔a 1＝a 2＝…＝a n 或b 1＝b 2＝…＝b n .即反序和≤乱序和≤顺序和．4．贝努利不等式设x >－1，且x ≠0，n 为大于1的自然数，则(1＋x )n >1＋nx . 备选习题1．设a 、b 、c 为正数，且a ＋2b ＋3c ＝13，则3a ＋2b ＋c 的最大值为( )A.1693B.133C.1333D.13[答案] C[解析] (a ＋2b ＋3c )[(3)2＋12＋(13)2] ≥(3a ＋2b ＋c )2，∵a ＋2b ＋2c ＝13，∴(3a ＋2b ＋c )2≤1693， ∴3a ＋2b ＋c ≤1333， 当且仅当a 3＝2b 1＝3c 13取等号， 又∵a ＋2b ＋3c ＝13，∴a ＝9，b ＝32，c ＝13时，3a ＋2b ＋c 取最大值1333.2．(2013·陕西检测)若不等式|x ＋1|＋|x －m |<6的解集为∅，则实数m 的取值范围为________．[答案] [5，＋∞)∪(－∞，－7][解析] ∵不等式的解集为空集，|x ＋1|＋|x －m |≥|m ＋1|，∴只需|m ＋1|≥6，∴m 的取值范围为[5，＋∞)∪(－∞，－7]．3．(2013·云南玉溪一中月考)已知函数f (x )＝|x ＋1|＋|x －2|－m .(1)当m ＝5时，求f (x )>0的解集；(2)若关于x 的不等式f (x )≥2的解集是R ，求m 的取值范围．[解析] (1)由题设知|x ＋1|＋|x －2|>5，⎩⎨⎧ x ≥2，x ＋1＋x －2>5，或⎩⎨⎧ －1≤x <2，x ＋1－x ＋2>5，或⎩⎨⎧ x <－1，－x －1－x ＋2>5.解得原不等式的解集为(－∞，－2)∪(3，＋∞)．(2)不等式f (x )≥2即|x ＋1|＋|x －2|≥m ＋2，∵x ∈R 时，恒有|x ＋1|＋|x －2|≥|(x ＋1)－(x －2)|＝3，不等式|x ＋1|＋|x －2|≥m ＋2的解集是R ，∴m ＋2≤3，m 的取值范围是(－∞，1]．4．(1)解关于x 的不等式x ＋|x －1|≤3；(2)若关于x 的不等式x ＋|x －1|≤a 有解，求实数a 的取值范围．[解析] 设f (x )＝x ＋|x －1|，则f (x )＝⎩⎪⎨⎪⎧2x －1(x ≥1)，1 (x <1). (1)当x ≥1时，2x －1≤3，∴1≤x ≤2，又x <1时，不等式显然成立，∴原不等式的解集为{x |x ≤2}．(2)由于x ≥1时，函数y ＝2x －1是增函数，其最小值为f (1)＝1； 当x <1时，f (x )＝1，∴f (x )的最小值为1.因为x ＋|x －1|≤a 有解，即f (x )≤a 有解，所以a ≥1.5．(2013·辽宁理，24)已知函数f (x )＝|x －a |，其中a >1.(1)当a ＝2时，求不等式f (x )≥4－|x －4|的解集；(2)已知关于x 的不等式|f (2x ＋a )－2f (x )|≤2的解集为{x |1≤x ≤2}，求a 的值．[解析] (1)当a ＝2时，f (x )＋|x －4|＝⎩⎪⎨⎪⎧ －2x ＋6，x ≤2，2，2<x <4，2x －6，x ≥4.当x ≤2时，由f (x )≥4－|x －4|得－2x ＋6≥4，解得x ≤1； 当2<x <4时，f (x )≥4－|x －4|无解；当x ≥4时，由f (x )≥4－|x －4|得2x －6≥4，解得x ≥5； 所以f (x )≥4－|x －4|的解集为{x |x ≤1或x ≥5}．(2)记h (x )＝f (2x ＋a )－2f (x )，则h (x )＝⎩⎪⎨⎪⎧ －2a ，x ≤0，4x －2a ，0<x <a .2a ，x ≥a .∵a >1，∴x ≤0时，h (x )＝－2a <－2，x ≥a 时，h (x )＝2a >2，而已知不等式|h (x )|≤2的解集为{x |1≤x ≤2}， ∴不等式|h (x )|≤2化为⎩⎨⎧ －2≤4x －2a ≤2，0<x <a ，即⎩⎪⎨⎪⎧ a －12≤x ≤a ＋12，0<x <a ，∵a >1，∴a －12>0，a ＋12<a ，∴由|h (x )|≤2，解得a －12≤x ≤a ＋12.又∵|h (x )|≤2的解集为{x |1≤x ≤2}，∴⎩⎪⎨⎪⎧ a －12＝1，a ＋12＝2，于是a ＝3.[点评] 第(2)问是求解的难点，可借助图象帮助理解．作出h (x )的图象如图．∵a >1，|h (x )|≤2的解集为{x |1≤x ≤2}，∴|h (x )|≤2，即|4x －2a |≤2.此不等式的解集为{x |1≤x ≤2}．。
教育学2013秋第二次在线作业3
教育学2013秋第二次在线作业3单选题（共20 道试题，共60 分。
）得分：01. 《大教学论》的作者是（）。
A. 昆体良B. 夸美纽斯C. 洛克D. 斯宾塞正确答案：B 满分：3 分得分：02. 教学中“拔苗助长”、“陵节而施”违背了（）。
A. 个体身心发展的顺序性规律B. 个体身心发展的阶段性规律C. 个体身心发展的不均衡性规律D. 个体身心发展的个别差异性规律正确答案：A 满分：3 分得分：03. “大有大成，小有小成”是（）教学原则具体运用的结果。
A. 自觉积极性B. 启发性C. 巩固性D. 因材施教正确答案：D 满分：3 分得分：04. 按教育内容的分类来说，法制教育属于（）。
A. 美育B. 体育C. 德育D. 智育正确答案：C 满分：3 分得分：05. 我国社会主义教育目的的总要求是（）A. 德、智、体等方面全面发展B. 坚持社会主义方向C. 培养劳动者D. 推进素质教育正确答案：C 满分：3 分得分：06. 教育过程的关键是实现（）。
A. 教师讲授过程B. 学生学习过程C. 校长管理过程D. 教材呈现过程正确答案：B 满分：3 分得分：07. 素质教育是（）。
A. 一种全面发展人的素质的教育，是一种面向全体的教育，是正在发展的教育B. 一种全面发展人的素质教育，是一种面向个体的教育，是可持续发展的教育C. 一种全面发展人的素质的教育，是一种面向全体的教育，是可持续发展的教育D. 一种全面发展人的素质的教育，是一种面向个体的教育，是正在发展的教育正确答案：C 满分：3 分得分：08. 小学阶段政治教育和基本思想观点教育的重点是（）。
A. 正确的政治方向B. 对事物的正确认识C. 道德行为规范D. 形成良好的道德意识和行为习惯正确答案：D 满分：3 分得分：09. 广泛意义上的教育目的存在于（）活动之中。
A. 家庭教育B. 社会教育C. 学校教育D. 一切教育正确答案：D 满分：3 分得分：010. 教育目的与教育目标的关系是（）A. 教育目的与教育目标没有差别B. 教育目标是教育目的的具体化C. 教育目标可以取代教育目的D. 教育目的可以取代教育目标正确答案：B 满分：3 分得分：011. 教师在教育工作中要做到循序渐进，这是因为( )。
2013考研数学三真题及答案解析
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。
解析：令
C
x1 x3
x2 x4
，则
AC
1 1
a 0
x1 x3
x2 x4
x1
ax3 x1
x2
ax4 x2
CA
x1 x3
x2 x4
1 1
a 0
x1 x3
12 （B） 1
8
（C） 1 6
（D） 1 2
答案：（C）
解析：
PX Y 2 PX 1，Y 1 PX 2，Y 0 PX 3，Y 1 PX 1 PY 1 PX 2 PY 0 PX 3 PY 1 1 1 1 1 1 1 1
43 83 83 6 二、填空题：914 小题，每小题 4 分，共 24 分，请将答案写在答．题．纸．指定位置上.
03 2013届理科综合测试卷(3)答案
一、 物理部分答案（3）14A15D16B17B18CD19AC20AD 21．（1）倾斜（2）M 相同（3）需要、C22.（1）×1K 、交流1000V （2）负极、流入（3）40K （4）4.9V23. 解：(1)金属棒未进入磁场，回路中感应电动势为：E 1＝ΔΦΔt ＝ΔBSΔt＝0.5V灯泡中的电流强度为：rR E I +=1＝0.1A (5分)(2)因金属棒在磁场中匀速运动 ，则F ＝d I B '又： r R Bdv +='I 得rR vd B F F A +==22解得：v=1m/s (6分)(3)金属棒未进入磁场的加速度为：a ＝v t＝0.25m/s 2金属棒的质量：m ＝Fa＝0.8kg(5分,共16分)24解：卫星运动：2222)2(4)2(R Tm R GMm π=…… （3分）在地表面：gm RGMm '2'= …………………（3分）卫星周期为：gR T 24π= ……………………（3分） （2）如图，当卫星在阴影区时不能接受阳光： ∠AOB = ∠COD =3π，t = 56 T ……………（3分）t =gR 2310π ………………………………（3分）（3在地球公转轨道处太阳光的辐射功率为214rP P π=…………（3分）卫星一周内转化的电能gR rS P St P E 26521ηη==………………（2分）25. （1）电子经加速电场加速：2112eU m v =解得：v =（6分）（2）由题意知，电子经偏转电场偏转后做匀速直线运动到达A 点，设电子离开偏转电场时的偏转角为θ，则由几何关系得：()tan 22d L L θ=+解得：tan 3d Lθ=太 阳 光带电粒子在电场中做类平抛运动mdeU2==mF a ，L=vt ，at v y =，vv y =θtan可得：212223U d U L=（10分）（3）要使电子在水平方向击中A 点，电子必向上极板偏转，且v y =0，则电子应在0t =时刻进入偏转电场，且电子在偏转电场中运动的时间为整数个周期，设电子从加速电场射出的速度为0v ，则因为电子水平射出，则电子在偏转电场中的运动时间满足0L t nT v ==则0L L T nv ===（n=1，2，3，4…）在竖直方向位移应满足220112()2()22222eU d T T n a n m d =⨯=⨯⋅ 解得：222102224nm d v nU d U eLL==（n=1，2，3，4…）（6分，共22分）选择题：6×7=42分26．（14分）（1）第2周期第ⅥA族（2）8mol，（3）[ H:S:]－HS－＋OH－＝S2－＋H2O，（4）C(s)＋1/2O2(g)＝CO(g)；△H＝－(a－2b)kJ/mol（其他合理答案也给分）（5）AB（漏选得1分，多选错选不得分）（6）Al－3e－＋4OH－＝AlO2－＋2H2O （每空2分）27．（14分）（1）0.25 mol/L·min（2分，计算或单位错不给分）；K=c6(CO)/c2(N2)（2分）（2）c （2分）（3）c、d（2分）（4）升高温度或缩小体积（增大压强）（2分）；加入了催化剂（2分）。
华师在线2013秋季班大学英语精读(3)作业2阅读理解满分答案
Many a young person tells me he wants to be a writer. I always encourage such people, but I also explain that there’s a big difference between a writer and writing. In most cases these individuals are dreaming of wealth and fame, not the long hours at a typewriter. “You have got to want to write,” I said to them, “not want to be a writer.”The reality is that writing is a lonely, private and poor-paying affair. For every writer kissed by fortune there are thousands more whose longing is never rewarded. When I left a 20-year career in the U.S. Coast Guard to become a freelance writer, I had no prospects at all. What I did have was a friend who found for me my room in a New York apartment building. It didn’t even matter that it was cold and had no bathroom. I immediately bought a used typewriter and felt like a genuine writer.After a year or so, however, I still hadn’t got a break and began to doubt myself. It was so hard to sell a story that barely made enough to eat. But I knew I wanted to write. I had dreamed about it for many years. I wasn’t going to be one of those people who died wondering. What if? I would keep putting my dream to test (even though it meant living with uncertainty and fear of failure). This is the shadow-land of hope, and anyone with a dream must learn to live there1.The passage is meant to ____A___ .A、warn young people of the hardship that a successful writer has to experienceB、advise young people to give up their idea of becoming a professional writerC、show young people it is unrealistic for a writer to pursue wealthD、encourage young people to pursue a writing career2.What can be concluded from the passage? DA、Genuine writers often find their work interesting ａｎｄrewarding.B、A writer’s success depends on luck rather on effort.C、Famous writers usually live in poverty ａｎｄisolation.D、The chances for writers to become successful are small.3．Why did the author begin to doubt himself after the first years of his writing career? BA、He was not able to produce a single book.B、He hadn’t seen a change for the better.C、He wasn’t able to have a rest for a whole year.D、He found his dream would never come true.4．In “…people who died wondering”, “who” refers to those ___B___ .A、who think too much of the dark side of lifeB、who regret giving up their career halfwayC、who think a lot without making a decisionD、who are full of imagination even upon death5．“Shadow-land” in the last sentence refers to _____C__ .A、the wonderland one often dreams aboutB、the bright future that one is looking forward toC、the state of uncertainty before one’s final goal is reachedD、a world that exists only in one’s imagination第2题(20) 分Students can travel in the United States without spending too much money if they follow these suggestions.A travel agent can give you information on special economy fares for trains, buses and planes. Think about hiking or biking for a part of your trip, too. You’ll not only save money, but you’ll also see a lot m ore of the country.Some students may want to travel by car. Be sure to think about going with other students—many colleges have “ride boards” that list when and where other students plan to travel. Many radio stations provide the same sort of service —they announce who’s driving where, when, how many riders they will take and what the expenses will be.There are many inexpensive, older hotels near bus or train stations. Check your travel guide for names of the best. Many parts of the country also have youth hostels where young people can stay for only a few dollars a night.You don’t have to eat in restaurants all the time, but we don’t recommend a diet of candy and cola, either. You can usually get a healthy, cheap breakfast in a restaurant. If the weather is warm, you can buy food in supermarkets or at roadside stands and have a picnic for lunch. For dinner you can get the names of good, cheap restaurants from travel guides or friends.1．阅读理解(4.0) 分The passage tells students _______ C.A、how to make travel plansB、how to get help while travelingC、how to ｕｓｅless money while travelingD、how to choose hotels2．阅读理解(4.0) 分To see more of the country, you’d better travel _______ .DA、by planeB、by busC、by trainD、by bike3．阅读理解(4.0) 分If you want to share rides with others, you can get information ______B .A、on the blackboards in classroomsB、from school administratorsC、through certain radio programsD、from travel agents4．阅读理解(4.0) 分According to the passage, staying at youth hostels is _______ .AA、cheapB、convenientC、comfortableD、enjoyable5．阅读理解(4.0) 分To save money, you can _______ C.A、have more candy ａｎｄcolaB、invite your friends for a picnicC、take some food with youD、eat in restaurants sometimes第3题(20) 分In many stories on TV and in science-fiction books, men travel to faraway stars. They have quick, easy journeys. But so far, men have been able to reach only the ea rth’s own moon.Suppose a man wanted to reach a distant star. Even if he traveled his whole life, he would have to move faster than the speed of the light. Nothing can move that fast except light itself.Strange things happen to an object when it moves rapidly. The object weighs more. An object moving at 86 percent of the speed of light is twice as heavy as it is at rest. A stick appears shorter. A clock runs more slowly. A man would not age so fast as he would on the earth.Light travels more than 186,000 miles a second, or about 11 million miles a minute. In one year, light travels six trillion miles. That great distance is called a light-year. It is used to measure distance in space.The star closest to our sun is Alpha Centauri. It is more than four light-years away. If one traveled at the speed oflight, he could make a round trip to Alpha Centauri in nine years. But, even at that speed, he could not reach Alcaid (北斗星) in the handle of the Big Dipper. A one-way journey to Alcaid would take almost 200 years.1．阅读理解(4.0) 分In this passage the words “closest to our sun” means the star ______B___ .A、the earth we live onB、Alpha CentauriC、the Big DipperD、the moon2．阅读理解(4.0) 分A one-way journey to Alcaid would take _______C__ .A、about nine yearsB、less than four yearsC、almost 200 yearsD、less than 100 years3．阅读理解(4.0) 分Why do we measure the distance in light-years instead of miles? BA、Units of light-years sound better.B、Using light- years reduced the number of figures used.C、We used to measure distance in light-years long ago.D、We do not make mistakes when we ｕｓｅlight-years.4．阅读理解(4.0) 分If a stone moved at the speed of light, it _____A____ .A、would weigh twice more than it is motionlessB、would weigh as much as it is on earthC、would weigh less than it is on earthD、would not have weight at all5．阅读理解(4.0) 分This story is mainly about _____B____ .A、the distance between the sun ａｎｄthe other starsB、the problems of traveling to faraway starsC、what happens when we travel faster than the speed of lightD、the tool we ｕｓｅwhen we go to faraway stars第4题(20) 分No man can change the weather. Nobody can control the weather. But if people read correctly the signs around, they can tell __1__ the weather will be like the following day or two.For many centuries people have studied the weather and tries to __2__ weather forecasting. Sometimes distant objects __3__ hills and tall trees don’t seem to be very clear. This is a __4__ of much water vapor in the __5__ and therefore rain will probably come.If some birds fly high, fine weather is coming, but if they fly near the ground, rainy or stormy weather is __6__ the way. It is probably because of the insects which they are hunting __7__ they fly very low.If a fog appears in the morning just about sunrise, then the day will be warm. Instead, if a fog appears in the evening, the next day will bring wet __8__. If the sunset is mostly red in color, then the following day will be fine. If a rainbow appears in the morning, rainy weather will probably come.Most of the __9__ sayings have been made by people who have used their __10__ and brains to make weather forecasting.1．完形填空(2.0) 分 CA、thatB、whichC、whatD、how2．完形填空(2.0) 分 BA、pickB、makeC、carryD、send3．完形填空(2.0) 分 DA、as wellB、andC、as well asD、such as4．完形填空(2.0) 分 BA、sightB、signC、markD、shape5．完形填空(2.0) 分 AA、airB、skyC、heavenD、earth6．完形填空(2.0) 分 DA、byB、inC、forD、on7．完形填空(2.0) 分 AA、thatB、whichC、whereD、when8．完形填空(2.0) 分 BA、dayB、weatherC、hourD、time9．完形填空(2.0) 分 AA、aboveB、belowC、importantD、interesting10．完形填空(2.0) 分 CA、earsB、handsC、eyesD、legs第5题(20) 分If there is any single factor that makes for success in living, it is the ability to profit by defeat. Every success I know has been achieved because the person was able to analyze defeat and actually profit by it in his next undertaking. Confuse defeat with failure, and you are doomed indeed to failure, for it isn’t defeat that makes you fail: it is your own refusal to see in defeat the guide and encouragement to success.Defeats are nothing to be ashamed of. They are routine incidents in the life of every man who achieves success. But defeat is a dead loss unless you do face it without feeling ashamed, analyze it and learn why you failed. Defeat, in other words, can help to cure its own cause. Not only does defeat prepare us for success, but nothing else can arouse within us such a compelling desire to succeed. If you let a baby grasp a rod and try to pull it away, he will cling more and more tightly until his whole weight is suspended. It is this same reaction that should give you new and greater strength every time you are defeated. If you fully use the power which defeat gives, you can accomplish with it far more than what you are capable of.1．阅读理解(4.0) 分The author ___D______ .A、orders you to analyze defeatB、wants you to face defeatC、advises you to let a baby grasp a rodD、warns you not to confuse defeat with fail2．阅读理解(4.0) 分Defeat is valuable ______C__ .A、because it is a factorB、because it isn’t defeat that makes you failC、because it provides the guide ａｎｄencouragement to successD、because it is not a thing to be ashamed of3．阅读理解(4.0) 分What does the author know? _____B___ .A、he knows every success in lifeB、he knows the factor making for successC、he knows every man who is able to analyze defeatD、he knows the life of every man4．阅读理解(4.0) 分The person who was able to analyze the defeat is likely ___C_____ .A、to be a successorB、to face it with feeling ashamedC、to achieve successD、to be ashamed of it5．阅读理解(4.0) 分What does the author advise one to do with the power which defeat gives? One should _____A___ .A、explore itB、explain itC、let a baby grasp a rodD、learn it作业1．阅读理解1. 阅读理解标准答案：A您的答案：A批注：2. 阅读理解标准答案：D您的答案：D批注：3. 阅读理解标准答案：B您的答案：B批注：4. 阅读理解标准答案：B您的答案：B批注：5. 阅读理解标准答案：C您的答案：C批注：题目总分数：20题目总批注：2．阅读理解1. 阅读理解标准答案：C您的答案：C批注：2. 阅读理解标准答案：D您的答案：D批注：3. 阅读理解标准答案：B您的答案：B批注：4. 阅读理解标准答案：A您的答案：A批注：5. 阅读理解标准答案：C您的答案：C批注：题目总分数：20题目总批注：3．阅读理解1. 阅读理解标准答案：B您的答案：B批注：2. 阅读理解标准答案：C您的答案：C批注：3. 阅读理解标准答案：B您的答案：B批注：4. 阅读理解标准答案：A您的答案：A批注：5. 阅读理解标准答案：B您的答案：B批注：题目总分数：20题目总批注：4．完形填空21. 完形填空标准答案：C您的答案：C批注：2. 完形填空标准答案：B您的答案：B批注：3. 完形填空标准答案：D您的答案：D批注：4. 完形填空标准答案：B您的答案：B批注：5. 完形填空标准答案：A您的答案：A批注：6. 完形填空标准答案：D您的答案：D批注：7. 完形填空标准答案：A您的答案：A批注：8. 完形填空标准答案：B您的答案：B批注：9. 完形填空标准答案：A您的答案：A批注：10. 完形填空标准答案：C您的答案：C批注：题目总分数：20题目总批注：5．阅读理解1. 阅读理解标准答案：D您的答案：D批注：2. 阅读理解标准答案：C您的答案：C批注：3. 阅读理解标准答案：B您的答案：B批注：4. 阅读理解标准答案：C您的答案：C批注：5. 阅读理解标准答案：A您的答案：A批注：题目总分数：20题目总批注：作业总批注：。
行政管理大学英语(3)2013秋第三套作业
内容:
Statuses are marvelous human inventions that enable us to get along with one another and to determine wherewe "fit " in society. As we go about oureveryday lives, we mentally attempy to place people in terms of their statuses. For example, we must judge whether the person in the library is areader or a librarian ,whether the telephone calleris a friend or a salesman ,whether the unfamiliar person on our property is a thief or a meter reader , and so on .The statuses we assume often vary with the people we encounter, and change throughout lift. Most of us can , at very high speed , assume the statuses that various situations require. Much of social interaction consists of identifying and selecting among appropriate statuses and allowing other people to assume their statuses in relationto us. This means that we fit our actions to those of other people based on a constant mental process of appraisaland interpretation. Although some of us find the task more difficult than others, most of us perform it rather effortlessly..A status has been compared to ready-made clothes. Within certain limits, the buyer can choose style and fabric. But an Americanis not free to choose the costume of a Chinese peasant or that of a Hindu prince. We must choose from among the clothing presented by our society. Furthermore, our choice is limited to a size that will fit, as well asby our pocketbook Having made a choice within these limits we can have certain alterations made, but apart from minor abjustments , we tend to be limited to what the stores have on their racks. Statuses too come ready made,and the range of choice among them is limited. In the first paragraph, the writer tells us that statuses can help us ______
2013高考最新样题三套卷【理综】卷(3)含答案
2013高考最新样题三套卷理综卷三本试题分第I卷和第Ⅱ卷两部分，满分240分。
考试用时150分钟。
答题前，学生务必用0.5毫米黑色签字笔将自已的姓名、座号、准考证号、县区和科类填写在试卷和答题卡规定的位置。
考试结束后，将本试题和答题卡一并交回。
第I卷(必做，共87分)注意事项：1．第I卷共20小题，l—13每小题4分，14—20每小题5分，共87分。
2．每小题选出答案后，用2B铅笔把答题卡对应题目答案涂黑。
如需改动，用橡皮擦干净后，在选涂其他答案标号。
不涂在答题卡上，只答在试卷上不得分。
以下数据可供答题时参考：相对原子质量：H—l C—12 N—14 O—16 F—19 Na—23 CI—35.5 Ca—40一、选择题(本题包括13小题，每小题只有一个选项符合题意)。
1．下列叙述中，不属于RNA功能的是( )A．细胞质中的遗传物质B．作为某些病毒的遗传物质C．催化某些代谢过程D．参与核糖体的组成3．下列有关遗传、变异和进化的叙述中，正确的是( )A．菜种群中若基因(A、a)频率不变，则基因型(AA、Aa、aa)频率不变B．物种形成的三个环节是基因突变和基因重组、自然选择、隔离C．镰刀型细胞贫血症的直接原因是血红蛋白中谷氨酸被缬氨酸所替换D．多基因遗传病是指受两个以上基因控制的人类遗传病4．下图是科学家对水稻根进行单侧光照后的生长情况，下表表示处理后的实验数据。
下列对单侧光处理后的推测不正确的是( )A.生长素分布不均可能是生长素向背光侧运输的结果B.水稻根向光弯曲的角度随光照强度的增加而增大C.背光侧生长素对根的生长起抑制作用D.生长素对根生长的作用具有两重性5.马拉松比赛中有关运动员体内的生理变化，下列说法不正确的是（）A.以葡萄糖为底物氧化分解供能时，吸O2量与放出CO2的量比值为1B.大量流汗导致失水过多，机体可通过减少抗利尿激素的分泌进行调节C.发令枪响到肌细胞收缩，神经冲动传导方式是电信号→化学信号→电信号D.肌细胞产生并释放到血液中的乳酸，可由缓冲物质维持酸碱平衡6.某山区实施退耕还林后，群落经过数十年的演替发展为树林。
作业3 信号处理-答案
作业3 信号处理班级：姓名：学号：成绩：一、填空题1、直流电桥平衡的条件是R1 ⋅ R3=R2 ⋅ R4 _ ，交流电桥平衡的条件是|Z1|⋅|Z3|=|Z2|⋅|Z4|和φ1+ φ3=φ2 +φ4。
2、调幅是指时域信号与载波信号的乘积，同步解调是指调制后的时域信号与载波信号的再次乘积。
4、调幅过程在频域相当于频率（频谱）搬移过程，调幅装置实质上是一个乘法器，典型调幅装置是电桥。
5、RC低通滤波器中，RC称之为时间常数，其取值愈大，则上截止频率愈低。
6、RC微分电路实际上是一种高通滤波器，而RC积分电路实际上是一种低通滤波器。
7、巴塞伐尔定理表示在时域中计算的信号总能量，等于在频域中计算的信号总能量。
8、自相关函数能将淹没在噪声中周期信号提取出来，其频率保持不变，而丢失了相位信息。
9.A/D转换器是将模拟信号转换成数字信号的装置。
10.在数字信号处理中，采样时如果不满足采样定理，则会产生混叠；对信号进行截断时，则会产生能量泄漏。
11．对周期信号进行整周期截断，这是获得准确频谱的先决条件。
12.信号经截断后，其带宽将变为 无限带宽 ，因此，无论采样频率多高，将不可避免的发生 混叠 ，从而导致 失真（误差） 。
13、连续时间信号的离散傅里叶变换可概括为时域采样、时域截断和 频域采样 三个步骤。
14、离散傅里叶变换是适于 数字计算机 的傅里叶变换，信号经过 时域采样 、 时域截断 、 频域采样 ，使信号在时域和频域都是周期的、离散的。
二、选择题1.被测结构应变一定时，可以采用 B 方法使电桥输出增大。
A 多贴片B 使4个桥臂上都是工作应变片C 交流测量电桥D 电阻值最小的应变片2.差动半桥接法的灵敏度是单臂电桥灵敏度的 C 倍。
A 1/2B 1C 2D 33.为使调幅波能保持原来信号的频谱图形，不发生重叠和失真，载波频率f 0必须 C 原信号中的最高频率f m 。
A 等于B 低于C 高于D 接近4．在同步调制与解调中要求载波 B 。
2013秋季开放大学(电大)英语2 第三次网上作业答案大全
、I’ve always enjoyed ________.A.to swimB.swimmingC.swim2、You can put the letters into the ________ box.A.wooden large bluerge blue woodenC.blue large wooden3、You’re driving ________, slow down!A.too fastB.very slowC.not fast4、I’m going to buy Mary a birthday gift. Do you have ________ in mind?A.special somethingB.special anythingC.anything special5、________ the earth is round, why do we not fall off?A.BecauseB.ForC.Since6、A: The exam was very easy, wasn’t it? B: Yes, but I don’t think ________ could pass it.A.somebodyB.everybodyC.anybody7、They must do ________ duty and we must do ________.A.their …oursB.their …ourC.theirs …ours8、After they finished ________ football, they went for a drink in a pub.A.playingB.to playC.play9、Is it difficult to learn to ________ Tai Chi?A.doB.playC.go10、Her article is ________ in her class.A.betterB.bestC.the best、He used to shout ________ me when I was a child.A.onB.atC.after2、English is the language ________ most people in Shanghai want to learn to speak.A.whoB.thatC.where3、I’m going to ________ a flat near the company I’m working at.A.hireB.borrowC.rent4、The teacher asked me to sit down, and ________.A.so did IB.did I soC.I did so5、The teachers ________ teach us in STVU are good, for they all have a deep sense of responsibility.A.whoseB.whoC.whom6、The teacher asked ________ the window was smashed by the big boy.A.ifB.thatC.did7、A: Did the reporter ask about the new restaurant? B: Yes. He asked ________.A.when it would openB.when will it openC.when it will open8、Please look for a zebra-crossing down there. You ________ cross the street here.A.are not allowed toB.don’t allowed toC.are not allowed9、Would you like me to help you ________ a new dress for the meeting?A.pick forB.pick aboutC.pick out10、Mr. Jones, ________ came here this morning, is a detective.A.whichB.thatC.whoI have to go now. I have to pick ________ my son from school.A.inB.withC.up2、A concert will be held in the school hall ________ 4 pm ________ Tuesday.A.on…atB.in…inC.at…on3、His story is ________ than yours.A.interestingB.more interestingC.most interesting4、They are going to ________ a company to organize the gig.A.rentB.hireC.borrow5、We have to wait for a while because Mum ________ cooking yet.A.has finishedB.didn’t finishC.hasn’t finished6、Oh, Jack has broken his leg, we must ________ and take him to hospital at once.A.stop play footballB.stop to play footballC.stop playing football7、Sorry, I’m not free this evening. ________ dinner with Mike.A.I will haveB.I’m havingC.I have8、On December 3, 2002, Shanghai ________ the bid for the World Exposition 2010.A.winB.wonC.will win9、A: What about a drink? B: I’d rather ________.A.have something eatB.have something to eatC.to have something to eat10、Is it difficult to learn to ________ Tai Chi?A.doB.playC.goShe ________ to town last week.A.goesB.wentC.has gone2、A: Has Peter forgot ________? B: Yes, he has forgot ________.A.something…anythingB.anything…somethingC.anything…anything3、I was ________ my ________ to school when I saw the accident.A.on / wayB.in / wayC.on / time4、They are going to ________ a company to organize the gig.A.rentB.hireC.borrow5、Mrs. Brown bought ________ pullover in the shop.A.a white beautiful woolenB.a beautiful white woolenC.a beautiful woolen white6、You’re driving ________, slow down!A.too fastB.very slowC.not fast7、I’ve lived in Chongqing ________ twenty years.A.inB.forC.since8、I’m going to buy Mary a birthday gift. Do you have ________ in mind?A.special somethingB.special anythingC.anything special9、________ the earth is round, why do we not fall off?A.BecauseB.ForC.Since10、My brother told me ________ his trip to Scotland.A.onB.withC.abouthave to go now. I have to pick ________ my son from school.A.inB.withC.up2、________ he failed several times, ________the young scientist still kept on making his experiments.A.Although…butB.Although…andC.Though…/3、We have to wait for a while because Mum ________ cooking yet.A.has finishedB.didn’t finishC.hasn’t finished4、A: Would you like to join us to go bowling? B: I’d rather ________ at home.A.stayB.to stayC.staying5、Oh, Jack has broken his leg, we must ________ and take him to hospital at once.A.stop play footballB.stop to play footballC.stop playing football6、You’re driving ________, slow down!A.too fastB.very slowC.not fast7、My uncle ________ to see us. He’ll be here soon.A.is comingesC.came8、________ the earth is round, why do we not fall off?A.BecauseB.ForC.Since9、I ________ this old vase in an antique shop.A.came atB.came acrossC.came into10、Is it difficult to learn to ________ Tai Chi?A.doB.playC.go1、I have to go now. I have to pick ________ my son from school.A.inB.withC.up2、Mrs. Wilson isn’t in, she ________ to the dry cleaner’s.A.goesB.has goneC.has been3、She ________ to town last week.A.goesB.wentC.has gone4、A: I’m sorry to have kept you waiting. B. Oh, not at all, I ________ here only a few minutes.A.have beenB.wasC.will be5、A: Can I give you a lift? B: No, thanks. I’d ________ walk home.A.prefer toB.preferC.want6、Mrs. Brown bought ________ pullover in the shop.A.a white beautiful woolenB.a beautiful white woolenC.a beautiful woolen white7、The child is ________ the nurse who is looking after her.d ford afterd with8、Jane finished ________ the letter and went for a stroll in the garden.A.writeB.to writeC.writing9、________ the earth is round, why do we not fall off?A.BecauseB.ForC.Since10、Is it difficult to learn to ________ Tai Chi?A.doB.playC.go1、My uncle ________ until he was fifty.A.got marriedB.didn’t get marriedC.wouldn’t get married2、A: When did he ________ the shirt? B: He bought it yesterdayA.boughtB.buyC.buys3、A: I’m sorry to have kept you waiting. B. Oh, not at all, I ________ here only a few minutes.A.have beenB.wasC.will be4、The child is ________ the nurse who is looking after her.d ford afterd with5、I’m going to buy Mary a birthday gift. Do you have ________ in mind?A.special somethingB.special anythingC.anything special6、A: The exam was very easy, wasn’t it? B: Yes, but I don’t think ________ could pass it.A.somebodyB.everybodyC.anybody7、I ________ this old vase in an antique shop.A.came atB.came acrossC.came into8、Is it difficult to learn to ________ Tai Chi?A.doB.playC.go9、China ________ the WTO and ________ a new member of it in 2001.A.joined…becameB.joins….becomesC.will join…become10、Her article is ________ in her class.A.betterB.bestC.the best1、________ he failed several times, ________the young scientist still kept on making his experiments.A.Although…butB.Although…andC.Though…/2、Lin Hua ________ to Tibet by plane three times this year.A.goesB.has goneC.has been3、Listen! The children ________ songs.A.singB.have sungC.are singing4、A: When did he ________ the shirt? B: He bought it yesterdayA.boughtB.buyC.buys5、I’m tired. I haven’t got ________ energy to go to the gym today.A.enoughB.manyC.little6、The blouse is ________ large for me.A.everB.enoughC.too7、A: Could I see the manager now? B: I’m sorry you can’t. He has ________ to Hong Kong.A.beenB.goneC.stayed8、On December 3, 2002, Shanghai ________ the bid for the World Exposition 2010.A.winB.wonC.will win9、My brother told me ________ his trip to Scotland.A.onB.withC.about10、After they finished ________ football, they went for a drink in a pub.A.playingB.to playC.play1、A concert will be held in the school hall ________ 4 pm ________ Tuesday.A.on…atB.in…inC.at…on2、His story is ________ than yours.A.interestingB.more interestingC.most interesting3、Lin Hua ________ to Tibet by plane three times this year.A.goesB.has goneC.has been4、Listen! The children ________ songs.A.singB.have sungC.are singing5、A: I’m sorry to have kept you waiting. B. Oh, not at all, I ________ here only a few minutes.A.have beenB.wasC.will be6、Mrs. Brown bought ________ pullover in the shop.A.a white beautiful woolenB.a beautiful white woolenC.a beautiful woolen white7、Sorry, I’m not free this evening. ________ dinner with Mike.A.I will haveB.I’m havingC.I have8、After they finished ________ football, they went for a drink in a pub.A.playingB.to playC.play9、I ________ this old vase in an antique shop.A.came atB.came acrossC.came into10、Mrs. Jones is a friend of ________.A.Mary mother’sB.Mary’s motherC.Mary’s mother’s、John ate a big meal ________ he said he wasn’t hungry.A.becauseB.althoughC.if2、A concert will be held in the school hall ________ 4 pm ________ Tuesday.A.on…atB.in…inC.at…on3、I’ve always enjoyed ________.A.to swimB.swimmingC.swim4、Mrs. Brown bought ________ pullover in the shop.A.a white beautiful woolenB.a beautiful white woolenC.a beautiful woolen white5、You can put the letters into the ________ box.A.wooden large bluerge blue woodenC.blue large wooden6、Let’s have dinner together ________ next week.A.sometimesB.some timeC.some times7、My uncle ________ to see us. He’ll be here soon.A.is comingesC.came8、A: What about a drink? B: I’d rather ________.A.have something eatB.have something to eatC.to have something to eat9、Her article is ________ in her class.A.betterB.bestC.the best10、Mrs. Jones is a friend of ________.A.Mary mother’sB.Mary’s motherC.Mary’s mother’s、I have to go now. I have to pick ________ my son from school.A.inB.withC.up2、My uncle ________ until he was fifty.A.got marriedB.didn’t get marriedC.wouldn’t get married3、They are going to ________ a company to organize the gig.A.rentB.hireC.borrow4、A: What do you think of my new car? B: It is ________ great.A.manyB.veryC.really5、Mrs. Brown bought ________ pullover in the shop.A.a white beautiful woolenB.a beautiful white woolenC.a beautiful woolen white6、The blouse is ________ large for me.A.everB.enoughC.too7、The child is ________ the nurse who is looking after her.d ford afterd with8、I’m going to buy Mary a birthday gift. Do you have ________ in mind?A.special somethingB.special anythingC.anything special9、________ the earth is round, why do we not fall off?A.BecauseB.ForC.Since10、China ________ the WTO and ________ a new member of it in 2001.A.joined…becameB.joins….becomesC.will join…become、单选题1、________ he failed several times, ________the young scientist still kept on making his experiments.A.Although…butB.Although…andC.Though…/2、A: Has Peter forgot ________? B: Yes, he has forgot ________.A.something…anythingB.anything…somethingC.anything…anything3、Paul ________ to learn French when he was 11.A.beganB.beginsC.begin4、A: Would you like to join us to go bowling? B: I’d rather ________ at home.A.stayB.to stayC.staying5、I’ve always enjoyed ________.A.to swimB.swimmingC.swim6、A: Can I give you a lift? B: No, thanks. I’d ________ walk home.A.prefer toB.preferC.want7、Mrs. Brown bought ________ pullover in the shop.A.a white beautiful woolenB.a beautiful white woolenC.a beautiful woolen white8、You can put the letters into the ________ box.A.wooden large bluerge blue woodenC.blue large wooden9、The child is ________ the nurse who is looking after her.d ford afterd with10、I ________ this old vase in an antique shop.A.came atB.came acrossC.came into。
计算机应用基础-作业3
选择题1（6分）、在Word的编辑状态中，如果要输入希腊字母Ω，则需要使用_________菜单.A、开始B、插入C、设计D、视图参考答案：B2(6分）、在Word的编辑状态打开了一个文档，对文档作了修改，进行关闭文档操作后_________。
A、文档被关闭，并自动保存修改后的内容B、文档不能关闭，并提示出错C、文档被关闭，修改后的内容不能保存D、弹出对话框，并询问是否保存对文档的修改参考答案：D3（6分）、word在编辑一个文档完毕后，要想知道它打印后的结果,可使用（）功能。
A、打印预览B、模拟打印C、提前打印D、屏幕打印参考答案：A4（6分)、在Word 2013中打开某个文件后，若希望将当前文件中所有的“语文”二字改为“数学"二字，最好的操作方法是（）。
A、利用“查找和替换”功能完成修改操作B、利用“查找和选择"功能完成修改操作C、利用“自动更正”功能完成修操作D、利用“复制"功能完成修改操作参考答案: A5(6分）、使图片按比例缩放应选用（）A、拖动中间的句柄B、拖动四角的句柄C、拖动图片边框线D、拖动边框线的句柄参考答案：B6(6分)、下列文件中,（）是Word 类型的文档。
A、Text.txtB、Text.docxC、Text。
pptxD、Text。
xlsx参考答案：B7（6分)、在Word的编辑状态，打开文档"ABC”，修改后另存为"ABD"，则文档ABC_________。
A、被文档ABD覆盖B、被修改未关闭C、被修改并关闭D、未修改被关闭参考答案: D8（6分）、在Word中，下述关于分栏操作的说法,正确的是（）.A、栏与栏之间不可以设置分隔线B、任何视图下均可看到分栏效果C、设置的各栏宽度和间距与页面宽度无关D、可以将指定的段落分成指定宽度的两栏参考答案：D9(6分）、在Word 2013中当前输入的文字被显示在（)。
2013学前教育计算机在线作业答案3
1．第1题操作系统中对文件的确切定义应该是______。
A.用户手写的程序和数据B.打印在纸上的程序和数据C.显示在屏幕上的程序和数据的集合D.记录在存储介质上的程序和数据的集合答案:D2．第2题在Windows中，不可以对“开始”菜单设置的是______。
A.在控制面板中设置B.在资源管理器中设置C.右键单击任务栏空白处，选择“属性”，在打开对话框中设置D.右键单击桌面空白处，选择“属性”，在打开对话框中设置答案:D3．第3题个人计算机（PC）必备的外部设备是______。
A.键盘和鼠标B.显示器和键盘C.键盘和打印机D.显示器和扫描仪答案:B4．第4题下列4种操作中，不能打开资源管理器的操作是______。
A.单击“开始”按钮，再从“所有程序”选项的级联菜单中单击“资源管理器”B.双击桌面的“资源管理器”快捷方式C.用鼠标右键单击“开始”按钮，出现快捷菜单后，单击“资源管理器”命令D.单击桌面的“资源管理器”快捷方式答案:D5．第5题以下不能进行输入法语言选择的是______。
A.先单击语言栏上表示语言的按钮，然后选择B.先单击语言栏上表示键盘的按钮，然后选择C.在任务栏属性对话框中设置D.按下Ctrl和Shift键答案:C6．第6题在Excel中，能够选择和编辑图表中的任何对象的工具栏是______。
A.“常用”工具栏B.“格式”工具栏7．第7题如果要从一张幻灯片“溶解”到下一张幻灯片，应使用“幻灯片放映”菜单中的______。
A.动作设置B.预设动画C.幻灯片切换D.自定义动画答案:C8．第8题ROM中的信息是______。
A.由计算机制造厂预先写入的B.在计算机通电启动时写入的C.根据用户需求不同，由用户随时写入的D.由程序临时写入的答案:A9．第9题在Excel中求一组数值中的平均值函数为______。
A.AVERAGEB.MAXC.MIND.SUM答案:A10．第10题在Outlook Express中设置唯一电子邮件账号：kao@，现成功接收到一封来自shi@的邮件，则以下说法正确的是______。
2013年3月公共英语三级真题及答案解析
2013年3月公共英语三级真题及答案解析(1~5/共10题)Listening ComprehensionDirections: This section is designed to test your ability to understand spoken English. You will hear a selection of recorded materials and you must answer the questions that accompany them. There are two parts in this section, Part A and Part B.Remember, while you are doing the test, you should first put down your answers in your test booklet. At the end of the listening comprehension section, you will have 3 minutes to transfer your answers from your test booklet onto your ANSWER SHEET 1.If you have any questions, you may raise your hand NOW as you will not be allowed to speak once the test has started.Now look at Part A in your test booklet.Part AYou will hear 10 short dialogues. For each dialogue, there is one question and four possible answers. Choose the correct answer--[A]、[B]、[C] or [D], and mark it in your test booklet. You will have 15seconds to answer the question and you will hear each dialogue ONLY ONCE.Play00:00…Volume第1题What does the man want to do?A.Learn how to dance.B.Dance with the woman.C.Invite the woman to a party.D.Ask for the woman´ s advice.第2题What do we learn about the man?A.He is health-conscious.B.He is sensitive to taste.C.He often catches colds.D.He likes eating onions.第3题Where is the woman talking with the man?A.At her workplace.B.At her home.C.In a hospital.D.In a hotel.第4题What do we learn about David´ s sister?A.She is living in Paris now.B.She is moving to Paris soon.C.She will leave her husband.D.She will work in Paris soon.第5题What does the woman say to the man?A.She must change her driving habits.B.She must learn the new traffic rules.C.She must renew her driver´ s license.D.She must improve her driving skills.下一题(6~10/共10题)Listening ComprehensionDirections: This section is designed to test your ability to understand spoken English. You will hear a selection of recorded materials and you must answer the questions that accompany them. There are two parts in this section, Part A and Part B.Remember, while you are doing the test, you should first put down your answers in your test booklet. At the end of the listening comprehension section, you will have 3 minutes to transfer your answers from your test booklet onto your ANSWER SHEET 1.If you have any questions, you may raise your hand NOW as you will not be allowed to speak once the test has started.Now look at Part A in your test booklet.Part AYou will hear 10 short dialogues. For each dialogue, there is one question and four possible answers. Choose the correct answer--[A]、[B]、[C] or [D], and mark it in your test booklet. You will have 15seconds to answer the question and you will hear each dialogue ONLY ONCE.Play00:00…Volume第6题What is the man mainly talking about?A.A long-lost friend.B.Preparations for a trip.C.An extraordinary experience.D.Wild animals in South Africa.第7题What is the woman´ s purpose in speaking to the man?A.To tell him about a bank robbery.B.To recommend a good book to him.C.To give him some advice on safety.D.To ask him to help her with banking.第8题What is the most important quality a parent should have according to the man?A.To be patient.B.To be consistent.C.To be supportive.D.To be considerate.第9题Why is the woman happy?A.Her present rent is much lower.B.Her room is bigger than before.C.She has got rid of her dull work.D.She has left her former roommate.第10题What are the speakers going to do?A.Change to another flight.B.Take a rest while waiting.C.Take their seats on the flight.plain about the flight delay.上一题下一题(11~13/共15题)You are going to hear four conversations. Before listening to each conversation, you will have 5 seconds to read each of the questions which accompany it. After listening, you will have time to answer each question by choosing [A]、[B]、[C] or [D]. You will hear each passage or conversation ONLY ONCE. Mark your answers in your test booklet.Play00:00…Volume第11题Why did the speakers go to the cinema early?A.To get ideal seats.B.To buy some drinks.C.To avoid traffic jams.D.To meet some friends.第12题Where was the man when he offered to get something to drink?A.At the cinema box office.B.Between the rows of seats.C.In the line to get into the cinema.D.In the lobby when they had a rest.第13题What can we learn about the ticket?A.It was for a seat in the front row.B.It could be used by two holders.C.It could be used repeatedly.D.It showed no seat number.上一题下一题(14~17/共15题)You are going to hear four conversations. Before listening to each conversation, you will have 5 seconds to read each of the questions which accompany it. After listening, you will have time to answer each question by choosing [A]、[B]、[C] or [D]. You will hear each passage or conversation ONLY ONCE. Mark your answers in your test booklet.Play00:00…Volume第14题Why did the company put the two singers together as a group?A.They are both talented singers.B.They are both popular among fans.C.Their voices make a good match.D.Their appearances make a good match.第15题What are the two singers best at?A.Soft rock..B.Slow music.C.Love songs.D.Country music.第16题Why does the company like the song "Studying"?A.It displays a different singing style.B.It has some distinguishing features.C.It adapts to audiences´ different tastes.D.It brings out the best of the singers´ voice.第17题What is the main idea of the song "Believe" according to the man?A.Make music part of your life.B.Share your happiness with others.C.Trust yourself before others trust you.D.Learn to interpret the power of music.上一题下一题(18~21/共15题)You are going to hear four conversations. Before listening to each conversation, you will have 5 seconds to read each of the questions which accompany it. After listening, you will have time to answer each question by choosing [A]、[B]、[C] or [D]. You will hear each passage or conversation ONLY ONCE. Mark your answers in your test booklet.Play00:00…Volume第18题What kind of position is to be offered?A.A teacher.B.A director.C.An operator.D.A programmer.第19题What do the two speakers say about Anderson?A.He is dependable.B.He is well-trained.C.He is experienced.D.He is hard-working.第20题Why does the man think Logan is the best candidate?A.She is devoted.B.She is intelligent.C.She is considerate.D.She is enthusiastic.第21题How many applicants do the speakers mention?A.2B.3C.4D.5上一题下一题(22~25/共15题)You are going to hear four conversations. Before listening to each conversation, you will have 5 seconds to read each of the questions which accompany it. After listening, you will have time to answer each question by choosing [A]、[B]、[C] or [D]. You will hear each passage or conversation ONLY ONCE. Mark your answers in your test booklet.Play00:00…Volume第22题What does the woman say about everybody´ s life?A.It´ s like a road.B.It´ s like a struggle.C.There´s much business.D.There´s much happiness.第23题Why do most people fail to reach goals according to the woman?A.They give in to a lot of interruptions.B.They tend to set too ambitious goals.C.They change their goals very often.D.They have too many goals at once.第24题What does the woman think of the goals that some people claim to have?A.Serious.B.Sensible.C.Interesting.D.Impractical.第25题What does the woman suggest those with goals do?A.Make important decisions about life first.B.Remind oneself of the goals frequently.C.Think of the goal in its best interests.D.Take necessary actions in one´ s life.上一题下一题(26~45/共20题)Directions:Read the following text from which 10 words have been removed. Choose from the words A～O the most suitable one to fill each numbered gap in the text (46-55). There are FIVE extra words that you do not need to use.I don´t know what it is about English pubs that I find so disappointing.__26__, pubs are supposed to be the Englishman´ s__27__meeting place, where he can get together with a few friends__28__a glass of beer and talk about football, or horse racing, or business or whatever else__29__his thoughts. You notice that the pub is the Englishman´s meeting place, not the Englishwoman ´ s. Even in our liberated times it is still not quite__30__for a woman to go into a pub alone: she must have a man to__31__and protect her. Perhaps that´s partly__32__pubs disappoint me—they are__33__mainly to provide for male interests, which are often pretty__34__. I think this male-dominated atmosphere__35__reminds me of being back at school, or in the army, neither of which is an__36__I much want to relive.However, I´ m__37__in the minority. Most Englishmen have their local, where they can escape from the__38__of family life or work, and if they are__39__, tell their troubles to a pretty barmaid. __40__, many men dream of retiring from their nine-to-five jobs and__41__a little country pub, where they imagine they’ll be the__42__of a seven-nights-a-week party. This__43__usually dies when they think of having to clean up spilled beer at one o´ clock in the morning.Still, there´s a pub for every type of man, and a man for every type of pub. And I must__44__that, for someone who doesn´t like them, I´ve__45__a lot of time in pubs of various kinds.第26题A.After allB.In additionC.As a resultD.For example第27题A.favoriteB.properC.formalD.exclusive第28题A.byB.overC.uponD.to第29题A.formsB.influencesC.occupiesD.troubles第30题wfulB.meaningfulC.impressiveD.respectable第31题A.accompanyfortC.encourageD.support第32题A.howB.whenC.whereD.whyA.forcedB.enabledC.intendedD.claimed第34题A.narrowB.nobleC.practicalD.personal第35题A.alsoB.henceC.yetD.only第36题A.existenceB.experienceC.interestD.incident第37题A.naturallyB.normallyC.obviouslyD.oddly第38题A.needsB.objectivesC.pressuresD.requirements 第39题A.carefulB.honestC.doubtfulD.lucky第40题A.StillB.IndeedC.ThusD.Nevertheless 第41题A.decoratingB.buyingC.designing第42题A.hostB.memberC.servantD.sponsor第43题A.hobbyB.projectC.habitD.dream第44题A.recognizeB.rememberC.believeD.admit第45题A.foundB.recoveredC.spentD.saved上一题下一题(46~50/共15题)ComprehensionDirections:Read the following two texts. Answer the questions on each text by choosing A, B, C or D. Researchers at UCLA Medical Center in Los Angeles, California found that a 12-minute bedside visit with a dog can help ease anxiety levels by 24 percent in heart failure patients, compared to a 10 percent drop when patients had a visit from a human volunteer, and no drop in patients who had no visit.Results of the 76-patient study were presented last week at the American Heart Association´ s annual Scientific Sessions in Dallas, Texas. The study was funded by the Pet Care Trust Foundation, a non-profit organization which promotes human-animal interaction and bonding. In the stud-y, effects of dog and volunteer visits were compared with those of volunteers only, and with patients who had no visits and remained at rest. Heart pressures were monitored and patients were asked to answer a list of anxiety assessment questions before and after the visits. Although critical pressure measures also decreased, suggesting improved cardiac function, the most marked response was seen in anxiety levels."The first thing you notice is that the patient´ s facial expression changes to a smile and the stress of the world seems to be lifted off their shoulders," study author Kathy Cole said. Feelings of depression and helplessness are common among heart patients, Cole said, and just three nights in a hospital is enough to make some patients feel anxious and unsettled. During the visit, the furry friend is allowed to lie on the bed next to the patient with its head within two feet of he patient´ s. Most patients petted the dog, while others engaged human volunteers in conversation about the dog.Dogs used in the study are specially trained animal-assisted therapy dogs that undergo aseries of trainings, evaluations and certifications to qualify as therapy dogs. Dog breeds varied. Researchers used everything from Bernese mountain dogs to small schnauzers. However, a dog doesn´ t have to be specially trained to have a calming effect on its human counterparts. In fact, the animal doesn´t even have to be a dog in order to help. "As long as the animal has meaning to the patient, or a relationship with the patient, it can help calm the patient,"Cole said.第46题We learn from the text that heart patients benefit most from visits______.A.by a volunteer with a dogB.by a volunteer on his ownC.by a well-trained dog aloneD.by a non-profit organization第47题The study shows that, for heart patients, ______.A.their anxiety is reduced if they stay longer in hospitalB.their contact with animals improves their conditionC.their heart pressure decreases if they remain at restD.their recovery relies on contact with animals第48题According to Cole, the change of patients´ facial expression indicates that______.A.they are happy with the experimentB.they are psychologically comfortedC.their hospitalization may be shortenedD.their heart function is returning to normal第49题Cole believes that dogs are helpful to the patients if______.A.they are limited to certain breedsB.they are specially trained onesC.they have meaning to themD.they stay with them all day第50题This report focuses on______.A.the healing power of animalsB.the treatment of heart diseaseC.the relationship between dogs and humansD.the promotion of human-animal interaction上一题下一题(51~55/共15题)ComprehensionDirections:Read the following two texts. Answer the questions on each text by choosing A, B, C or D.In many respects, Katsura Okiyama is a typical Japanese woman in her 20s. She enjoys spending time with her friends and loves Disney. But, less typically, she is a writer. And, quite exceptionally, her medium is a cell phone.In Japan, not only are people reading novels on their cell phones: they´ re also writing novels with them—uploading SMS-length chapters to specialist websites where they are in turn downloaded to the phones of millions of readers. The most popular are printed as books and sellin the hundreds of thousands. In book form, K, Okiyama´ s first cell-phone novel, is 235 pages long. "I think I was writing 20 pages in two hours per day at the most, and it took me almost a month," she says.Although she was used to writing around 100 text messages daily, Okiyama never expected that thumbing her keypad would enable her to become one of the country´ s hot new writers. " I had never written a story," she says. " I never had the idea of how a real novel should be, so that might be why I could do it. ""Cell-phone novels are created and consumed by a generation of young people in Japan that demands to be heard," says John Possman, an entertainment consultant. "It is truly pop culture. It has also become big business, shaking up a publishing industry whose sales have been declining for a decade. "Individual voices are hard to find, however. As dictated by the medium, the language of cellphone novels is simple and peppered with emoticons—signs that represent various attitudes or emotions. Dialogue and description are scarce. Subject matter is always the same. Typically, a heroine loses her first love and then later struggles to find love again."The stories are often told in the first person and lack diversity," agrees Possman. But that hasn´ t been a problem with consumers yet. "Why don´t you write a novel and move me?" read one angry schoolgirl´ s recent online post, in response to a fierce opponent of cell-phone novels. So far, Japan´ s literary establishment hasn´ t come up with an answer.第51题In Japan, cell-phone writers______.A.upload their stories bit by bit to websitesB.pay to have their novels printed as booksC.spend almost one month to finish a novelD.send SMS-length texts to readers´ phones第52题According to Katsura Okiyama, she is able to write because______.A.she has an insight into literatureB.she has training in storytellingC.she is skilled in text messaging .D.she is free from literary rules第53题According to John Possman, the Japanese publishing industry______.A.is pushed forward by the pop cultureB.is strengthened by cell-phone novelsC.has been shrinking for many yearsD.has been creating a generation of young readers第54题We learn from the text that cell-phone novels______.A.feature moving dialoguesB.have different writing stylesck variety in subject matterD.encourage readers to read others第55题It can be inferred that Japan´ s literary establishment can´t______.A.settle the dispute between the two sidespete with cell-phone novelsC.adapt to the new technologiesD.change their writing styles上一题下一题(56~60/共15题)ComprehensionDirections:Read the following two texts. Answer the questions on each text by choosing A, B, C or D.Too many people fear failure. Some of us let it keep us from trying new things, telling ourselves we´d be no good at it. Some limit our goals to only what we feel absolutely sure we can accomplish. Others among us try something once and when it doesn´ t work out, we decide that course is not for us.That´ s unfortunate because, according to many top scientists, failure is nothing to fear. Not only is it inevitable, they say, it is even an indispensable ally. "In the research lab," says John Po-lanyi, the Nobel prize-winning chemist," failure is a good thing. If everything you try is very successful, it means you´re playing it safe: you´ re not out on the edge. Failure means that you´ re learning. To ask a scientist whether he has experienced failure is like asking an artist whether he has ever made a sketch. The answer is, ´a million times. ´ That is the price of success. "Failure is not the opposite of success. It´ s more like an ingredient. In Hollywood, thousands of ideas for new TV shows are pitched each year, but only a select few get to the screen, let alone survive their first season. In real life, misses outnumber hits whenever people try something new.Nina Spencer, a motivational speaker and author of Getting Passion out of Your Profession, likes to remind audiences that whenever we try a new skill, we go through four stages. "There´ s the point when you don´ t know about the skill, and because you don´ t know about it, you´ re no good at it. Eventually, you come to know about the skill, but you´ re incompetent to perform it. Then , as long as you think carefully and go slowly, you can do it. Eventually, it becomes so practiced, it´ s easy. " The secret is not to give up at stage two.In short, the seeds of success almost always flourish best in the well-turned soil of failure. As Charles Kettering, inventor of the modern electric ignition system for cars and the holder of nearly 200 patents, once said, " failures, repeated failures, are finger-posts on the road to achievements— one fails forward towards success. "第56题According to John Polany, a seemingly all-time successful person may in fact______.A.be very adventurousB.be very competitiveC.be very sensitiveD.be very cautious第57题The Hollywood example is used to show that to succeed you should______.A.avoid mistakesB.live with failuresC.avoid competitionD.live with new ideas第58题When it comes to trying new things, people should know it is natural that______.A.success results from trial and errorB.they might miss something importantC.success requires safety guaranteesD.they will hit more than they miss第59题According to Nina Spencer, the key to acquiring a new skill lies in______.A.practiceB.persistencepetenceD.performance第60题The writer of the text wants to tell people not to______.A.be frightened by failureB.repeat the same failureC.underestimate failureD.be misled by failure上一题下一题(61~65/共5题)ComprehensionDirections:Read the texts from a magazine article in which five people talk about tipping in a restaurant. For questions 36-40, match the name of each person to one of the statements (A-G) given below. Charles Swecker:Thank you for getting it right in your articles on how to make a better student. As an educator, I´m sure I speak for others in saying parents who encourage learning at home ultimately have kids who perform at a higher level in class. School systems have been trying to get that message out for years. Imagine, excellent teachers working with students who have a drive and desire to learn. What a perfect world!Sandy Simonson:The students you pictured have positive attitudes: they expect to work hard on their own. Consequently, the effort they put in produces positive results. But my sons are different. They see their parents read. They were read to at home. We´ve encouraged and praised the genuine efforts they´ ve made. But the bottom line for my sons is that until something fires them up from within, they are content to do as little work as possible.Bridget Boyle:Parents should do these things to make their child a better student: turn off the television. Fill every room with books. Play, read, travel, and then read some more with your kids. If reading becomes the primary form of entertainment in the home, youngsters will turn to books. It was my pleasure to catch them reading on their own. Killing our television was the best thing we ever did.Deborah Curtin:Your report provided a glimpse into the life of young geniuses, but nobody made these kids better students. Each one can obviously grasp any task. Each could have been left in a box with a book and would have ended up self-taught. You did, however, confirm my belief that most teachers are only capable of communicating information to ready-made A students. Of course,there are a few good teachers, but they cannot overcome the defective system we have.Alan Holmari:I don´t think that the success of students really depends on marks. I just finished writing my second average-length stage play, which is going to be produced at my high school. And I´ m also playing a part in Hamlet. Despite all these really great things, my marks in school are really bad. I pay more attention to my hobbies than to school, and it´ s actually getting me somewhere. So marks aren´ t everything.Statements[A]Grades cannot fully reflect the whole picture of a student.[B]Try your best to make your children habitual readers.[C]Tolerant parents are sure to shape successful children.[D]Parents´ encouragement helps to improve children´ s performance at school.[E]Schooling is very different from educating.[F]Good students are actually not made but born.[G]Students cannot become better at school unless they are self-driven.第61题Charles Swecker________第62题Sandy Simonson ________第63题Bridget Boyle ______第64题Deborah Curtin ______第65题Alan Holman ______上一题下一题(1/1)WritingDirections:You should write your responses to both Part A and Part B of this section on your ANSWER SHEET.Part A第66题You have read the following notice about a lost handbag. As you have lost your bag, you want to contact the Lost and Found office to know if the bag is yours.Lost and FoundFound: handbag on April 12th at Spring Hill Park.Contact us at L & Fpark@ yahoo, com to identify and claim.Write an email to the Lost and Found office, telling about:1)when and where you lost your bag:2)what your bag is like and what is in it.You should write about 100 words. Do not sign your own name at the end of your email. Use "Wang Lin" instead. _________________上一题下一题(1/1)WritingDirections:Read the text below. Write an essay in about 120 words, in which you should summarize thekey points of the text and make comments on them. Try to use your own words.第67题Below is a table showing the percentages of people in a big city going to work in different ways in 2007 and 2011. Look at the table closely and write an essay of about 120 words making reference to the following points:1)the difference between the two years in the ways of people going to work:2)the possible reasons for the difference.图片____________上一题交卷交卷答题卡答案及解析(1~5/共10题)Listening ComprehensionDirections: This section is designed to test your ability to understand spoken English. You will hear a selection of recorded materials and you must answer the questions that accompany them. There are two parts in this section, Part A and Part B.Remember, while you are doing the test, you should first put down your answers in your test booklet. At the end of the listening comprehension section, you will have 3 minutes to transfer your answers from your test booklet onto your ANSWER SHEET 1.If you have any questions, you may raise your hand NOW as you will not be allowed to speak once the test has started.Now look at Part A in your test booklet.Part AYou will hear 10 short dialogues. For each dialogue, there is one question and four possible answers. Choose the correct answer--[A]、[B]、[C] or [D], and mark it in your test booklet. You will have 15seconds to answer the question and you will hear each dialogue ONLY ONCE.Play00:00…Volume第1题What does the man want to do?A.Learn how to dance.B.Dance with the woman.C.Invite the woman to a party.D.Ask for the woman´ s advice.参考答案： B 您的答案：未作答答案解析：[听力原文]M: Good evening. My name is Tom Smith, may I know your name? W: My name is Mary Classon.M: Mary, would you care to dance?W: I´d love to, but I have to be off with something important to do.第2题What do we learn about the man?A.He is health-conscious.B.He is sensitive to taste.C.He often catches colds.D.He likes eating onions.参考答案： A 您的答案：未作答答案解析：[听力原文]M: We´d better start to eat onion frequently, Linda.W: But you hate onions, don´t you?M: Until I learned from a report from today´ s paper that they protect people from flu and colds. After all, compared with health, taste is not so important.第3题Where is the woman talking with the man?A.At her workplace.B.At her home.C.In a hospital.D.In a hotel.参考答案： C 您的答案：未作答答案解析：[听力原文]W: When do you think that I can go home, Doctor Smith?M: Well, you came in on Monday and today is Friday. I say that you could probably leave tomorrow. But you should stay at home and not go back to work too soon.第4题What do we learn about David´ s sister?A.She is living in Paris now.B.She is moving to Paris soon.C.She will leave her husband.D.She will work in Paris soon.参考答案： B 您的答案：未作答答案解析：[听力原文]M: Laura, I ran into David today.W: Really? Did he say anything about his sister?M: Yes. She should be leaving London very soon because her husband has taken a job in Paris.第5题What does the woman say to the man?A.She must change her driving habits.B.She must learn the new traffic rules.C.She must renew her driver´ s license.D.She must improve her driving skills.参考答案： D 您的答案：未作答答案解析：[听力原文]M: Do you have a driver´s license?W: No. I am going to take the test in a couple of weeks.M: Didn´t you drive in your own country?W: Yes. But I have to be more skilled.M: And you have to study the traffic rules too.下一题(6~10/共10题)Listening ComprehensionDirections: This section is designed to test your ability to understand spoken English. You will hear a selection of recorded materials and you must answer the questions that accompany them. There are two parts in this section, Part A and Part B.Remember, while you are doing the test, you should first put down your answers in your test booklet. At the end of the listening comprehension section, you will have 3 minutes to transfer your answers from your test booklet onto your ANSWER SHEET 1.If you have any questions, you may raise your hand NOW as you will not be allowed to speak once the test has started.Now look at Part A in your test booklet.Part AYou will hear 10 short dialogues. For each dialogue, there is。
2013高三三模答案PPT精品文档21页
内心对音乐的热爱。音乐所引起的某些绪 深深地印在小克利斯朵夫的心头，他不由自 主地留恋音乐，继续他的音乐之路。
解答此题，要紧紧围绕小说全文内容、人物形 象及主题思想作答。观点明确2分，论据充分， 言之有理，要点清晰，6分。
观点一：小克利斯朵夫应该感谢父亲。（2分） 理由：
12、B（3分）、 C（2分）、 A (1分）
A项“在战火中挣扎、在文学中磨砺、 在绘画中提高”程度重；
D项“详细研究这些记录的历史背景” 说法不完全正确；
E项“虽不能身体力行参与创作”错误。
解答本题要从原文找到题干涉及的信息区域， 然后分析概括出传主的相关事迹。每点2分。
①18岁完成了父亲的遗作《潮州艺文志》， 震动了当时的中国学术界，对后来的各 地方志编撰产生了深远影响。
从情节上看，父亲发现小克利斯朵夫有音乐天赋， 严厉要求他坚持练习钢琴，在他感到厌倦时，父亲 的固执是他继续音乐之路的一个重要原因（2分）
从人物上看，性格固执的父亲，对小孩子自由个 性的约束，为小克利斯朵夫的音乐演奏与创作打下 了坚实的基础。（2分）
从主题上看，写小克利斯朵夫的成长主要是表达 对父亲这一形象的赞 美。（2分）
②29岁写下《楚辞地理考》，开辟了 《楚辞》研究的新天地。
③提出“三重证据法”，最终扩充为 “五重证据法”，推动了当代国际汉学 领域甲骨学、敦煌学、简帛学的创建和 深化
解答本题需要从行文结构与文段作用两方 面入手。每点2分，意思对即可。
①从绘画等学术角度评价饶宗颐在当代 学术界的地位与影响。
“为……所……”两处被动，各1分，“谢”1 分，译出大意2分）
（2）我八十一岁了，耳朵听不清，眼睛也看 不准了，不能再（对国家对朝廷）有所贡献 了，（我就是）所说的有损朝廷形象的人了！ （“有”、“聪明”、“补益”，各1分，译 出大意2分）
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一、简答题
1、简述指令与伪指令的概念并举例说明两者之间的差别。
解: 指令性语句(指令语句)是用指令系统中的指令构成的语句。
指示性语句（伪指令语句）是指示汇编程序进行汇编的操作。
指示性语句与指令性语句区别：一个程序经汇编，连接和装入内存后，在执行程序之前：指示性语句的功能已经完成，故又称伪操作；而指令性语句的功能尚未完成，需控制CPU去执行，才能完成。
举例：MOV AX, BX为指令，MOV BX, OFFSET TABLE中的OFFSET是伪指令。
2、解释中断、断点的概念，简述8088CPU中断的分类。
中断：在CPU正常运行程序时，由于内部或外部某个非预料事件的发生，使CPU暂停正在运行的程序，而转去执行处理引起中断事件的程序，然后再返回被中断了的程序，继续执行。
这个过程就是中断。
断点：是指CPU执行的现行程序被中断时的下一条指令的地址,又称断点地址。
中断的分类：按中断源的不同，中断分为内中断（软中断）和外中断（硬中断）。
3、简述中断处理需经历的过程。
中断处理一般需要经历七个过程：（1）中断请求；（2）中断响应；（3）断点保护；（4）中断源识别；（5）中断服务；（6）断点恢复；（7）中断返回。
4、简述并行通信和串行通信各自的特点。
并行通信：指数据的各位同时在多根并行传输线上进行传输，各位同时由源到达目的地，传输速度快，由于是多根数据线，远程费用高，适合短距离、高速通信。
串行通信：指数据的各位按时间顺序依次在一根传输线上传输的通信方式，传输速度慢，因数据线少，对远程来说费用低。
串行通信适合长距离、中低速通信。
二、教材P101，3.16
写一指令序列完成将BL中的数据除以CL中的数据，再将其结果乘以2，并将最后为16位数的结果存入DX寄存器中
MOV AL,BL
CBW
DIV CL
MOV CL,2
MUL CL
MOV DX,AX
三、教材P101，3.19
解：
MOV CX, 3
ROTATE : SHL AX,1
RCL DX,1
LOOP ROTATE
四、 教材P146，4.3
【解】：(1)
五、接口编程题
1、如下图所示，用8253的计数器1给8251提供发送时钟信号。
为简洁起见，图中只给出了部分有关的引脚信号。
8253的端口地址为40H-43H ，要求使8251工作在异步传送方式，且串行传送速率为1K 波特，波特率因子为16。
写出“将工作方式控制字写入8253”的指令序列。
解：
N=fin/fout=2*10^6/(16*10^3)=125=7DH
01110110B ，计数器1，读高低字节，方式3方
波，二进制
解：
MOV AL,76H
OUT 43H,AL
MOV AL,7DH
OUT 41H,AL
MOV AL,00H
OUT 41H,AL
2、教材P281，9.9，计算计数初值，并写出初始化8253的程序片段。
初值=f in/f out=2MHz/1KHz=2000=7D0H
用计数器0，工作方式3（方波发生器），写两个字节，二进制计数
控制字：00110110
MOV DX, 483H
MOV AL, 36H
OUT DX, AL
MOV DX, 480H
MOV AX, 7D0H
OUT DX, AL
MOV AL, AH
OUT DX, AL。