、判断题（共10 道小题，共50.0 分） 1. （错误） 数据通信系统中的数据终端设备一律是计算机 A. 正确 B. 错误 知识点:第 1 章概述 学生答标准答 案:[A;]标 案 准 : 答B 得分:[0]试值题:分 5.0提示: 2. （错误） 信号码元与传输代码总是相同 A. 正确 B. 错误 知识点:第 1 章概述 学生答标准答 案:[A;]标 案 准 : 答B 试题分 得分:[0] 5.0 值: 提示: 3. （错误） 数据通信系统中的传输信道为狭义信道。 A. 正确 B. 错误 知识点: 第 1 章概述
案学生 : 答[A;]标准答案: B 得分: [0]提示:试题分 值: 5.0 4. （错误） 数据通信系统中的DCE^律为调制解调器。 A. 正确 B. 错误 知识点:第 1 章概述 学生答标准答 案:[A;]标 案 准 : 答B 得分:[0]试值题:分 5.0提示: 5. （错误） X.50 建议的复用方式是比特交织。 A. 正确 B. 错误 知识点: 第 2 章数据信号的传输 学生答 案:[A;]标准答案: B 得分:[0]试题分值: 5.0提示: 6. 数字数据传输是利用PCM言道传输数据信号 A. 正确 B. 错误
知识点: 第 2 章数据信号的传输 学生答 案:[A;]标准答案:A; 得分:[5]试题分值: 5.0提示: 7. 8. （错 误） 相对调相比绝对调相的频带利用率高。 A. B.正确错误 知识点: 第 2 章数据信号的传输 学生答 案:[A;]标准答案:B 得分:[0]试题分值: 5.0 提示: 9. （错误） 正交调幅系统M越大越好 A. 正确 B. 错误 知识点: 第 2 章数据信号的传输 学生答 案:[A;]标准答案: B 得分:[0]试题分值: 5.0 提示: 10. 频带传输系统与基带传输系统的主要区别在于增加了调制、解调器 A. 正确 B. 错误 知识点: 第 2 章数据信号的传输
开放英语第三次形考作业
第三次形考作业 第一部分交际用语（10分） 1一5小题：阅读下面的小对话，判断答语是否恰当，恰当的选A（Right），不恰当的选B（Wrong），并将答案写在各题前的（）中。（每题2分，共10分）1．一How are you feeling? --- I feel much better. Thank you. A. Right. B. Wrong. 2．一How was your day yesterday? 一I've got a bad cough. A. Right. B. Wrong. 3．一Why don’t we have a barbecue? 一That's a good idea. A. Right. B. Wrong. 4．一What time does the Swimming Pool close? --- On Tuesday. A. Right. B. Wrong. 5．一What was the party like? --- It was great. A. Right. B. Wrong. 第二部分词汇与结构（40分） 6一25小题：阅读下面的句子，选择正确答案，并将所选项的字母符号写在各题前的（）中。（每题2分，共40分） （)6. _______any yoga classes in the evenings? A. Is there B. Are there C. Have （）7. Which is _________，the Yangtze River or the Yellow River? A. a bit long B. longer C. more long （）8. I'm _________ a list of things to buy. A. doing B. making
Unit 1 Vocabulary 1.F ill in the gaps with words……. 1). Respectable 2).agony 3).put down 4).sequence 5).hold back 6).distribute 7).off and on 8).vivid 9).associate 10).finally 11).turn in/out 12).tackle 2. Rewrite each sentence…… 1)…has been assigned to the newspaper’s Paris office. 2)….was so extraordinary that I didn’t know whether to believe him or not. 3)….a clear image of how she would look in twenty years’ time. 4)….gave the command the soldiers opened fire. 3. Complete the sentences… 1).reputation; rigid; to inspire 2).and tedious; What’s more; out of date ideas 3).compose; career; avoid showing; hardly hold back Ⅱ. Synonyms in Context
https://www.doczj.com/doc/1d17902467.html,posed 2.severe 3.agony 4.extraordinary 5.recall https://www.doczj.com/doc/1d17902467.html,mand 7.was violating 8.anticipate Ⅲ.Collocation 1.at 2.for 3.of 4.with 5.as 6.about 7.to 8.in; in 9.from 10.on/upon Comprehensive Exercises Ⅰ.Cloze Text-related (1).hold back (2).tedious (3).scanned (4).recall (5).vivid (6).off and on (7).turn out/in (8).career Theme-related (1).last (2).surprise (3).pull (4).blowing (5). dressed (6).scene (7).extraordinary (8).image (9).turn (10).excitement Ⅱ.Translation 1.A s it was a formal dinner party, I wore formal dress, as Mother told me to. 2.H is girlfriend advised him to get out of/get rid of his bad habit of smoking before it took
第一次阶段作业 一、判断题（共10道小题，共50.0分） 1.数据链路与数据电路是一回事。 A.正确 B.错误 知识点: 第1章概述 学生答案: [B;] 标准答 案: B 得分: [5] 试题分 值: 5.0 提示: 2. 3.数据通信系统中的数据终端设备一律是计算机。 A.正确 B.错误 知识点: 第1章概述 学生答案: [B;] 标准答 案: B 得分: [5] 试题分 值: 5.0 提示: 4. 5.信号码元与传输代码总是相同。 A.正确 B.错误 知识点: 第1章概述 学生答案: [B;] 标准答 案: B 得分: [5] 试题分 值: 5.0 提示:
6. 7.数据通信系统中的传输信道为狭义信道。 A.正确 B.错误 知识点: 第1章概述 学生答案: [B;] 标准答 案: B 得分: [5] 试题分 值: 5.0 提示: 8. 9.相对调相比绝对调相的频带利用率高。 A.正确 B.错误 知识点: 第2章数据信号的传输 学生答 案: [B;] 标准答案: B 得分: [5] 试题分值: 5.0 提示: 10. 11.数字调制中频带利用率最高的是正交调幅。 A.正确 B.错误 知识点: 第2章数据信号的传输 学生答 案: [A;] 标准答案: A 得分: [5] 试题分值: 5.0 提示: 12. 13.理想低通形成网络是滚降低通形成网络的特例。 A.正确 B.错误 知识点: 第2章数据信号的传输 学生答[A;] 标准答案: A
案: 得分: [5] 试题分值: 5.0 提示: 14. 15.X.51建议比X.50建议用得多。 A.正确 B.错误 知识点: 第2章数据信号的传输 学生答 [B;] 标准答案: B 案: 得分: [5] 试题分值: 5.0 提示: 16. 17.眼图可衡量接收波形的码间干扰情况。 A.正确 B.错误 知识点: 第2章数据信号的传输 学生答 [A;] 标准答案: A 案: 得分: [5] 试题分值: 5.0 提示: 18. 19.升余弦滚降低通的频带利用率均为η=1波特／Hz。 A.正确 B.错误 知识点: 第2章数据信号的传输 学生答 [B;] 标准答案: B 案: 得分: [5] 试题分值: 5.0 提示: 20. 二、单项选择题（共10道小题，共50.0分）
全新版大学英语第三册课后练习答案及课文翻译 《全新版大学英语综合教程3》课后练习答案 Unit 1 Part II Text A Text Organization P.10 1. Parts, Paragraphs and Main Ideas Part One Paras 1-3 The writer views his life in the country as a self-reliant and satisfying one. Part Two Paras 4-7 Life in the country is good yet sometimes very hard. Part Three Paras 8-11 After quitting his job, the writer's income was reduced, but he and his family were able to manage to get by. Part Four Paras 12-15 A tolerance for solitude and a lot of energy have made it possible for the family to enjoy their life in the country. 2. Happy Moments and Events: 1) growing nearly all their fruits and vegetables 2) canoeing, picnicking, long bicycle rides, etc. 3) keeping warm inside the house in winter 4) writing freelance articles 5) earning enough money while maintaining a happy family life Hardships: 1) working hard both in winter and in summer 2) harsh environment and weather condition 3) anxious moments after the writer quit his job 4) cutting back on daily expenses 5) solitude Vocabulary P.14 I
《开放英语4》形考册第一次作业答案 第一部分：听力理解（20分） 一、理解对话（每题1分，共10分） 在本节中，你将听到10个对话，每个对话后有一个问题，请从A、B、C三个选项中选择答案，并标在答题纸的相应位置。每段对话后有10秒的停顿，以便回答问题和阅读下一小题，每段对话读两遍。 1. A 2.B 3.B 4.C 5.B 6. C 7.A 8.C 9.A 10.A 二、理解段落（每题2分，共10分） 在本节中，你将听到一段独白或对话，判断下列句子是否符合所听独白或对话的内容，符合的选择T，不符合的选择F，并标在答题纸的相应位置。独白或对话前后各有30秒钟的停顿，以便阅读问题并核对答案。独白或对话读两遍。 11. F 12.T 13.T 14.F 15.T 第二部分：英语知识运用(35分) 三、选择填空（每题1分，共15分） 阅读下面的句子和对话，从A、B、C、D四个选项中选出一个能填入空白处的最佳选项，并标在答题纸的相应位置。 16. A 17. C 18. B 19. D 20. B 21. C 22. B 23. B 24. C 25. C 26. A 27. B 28. D 29. C 30. C 四、完型填空（每题2分，共20分） 阅读下面的短文，从短文后所给的A、B、C、D四个选项中选出能填入相应空白处的最佳选项，并标在答题纸的相应位置。 31. A 32. C 33. B 34. B 35. C 36. C 37. C 38. D 39. B 40. D 第三部分：阅读理解（共30分） 五、阅读下列短文，从A、B、C、D四个选项中选择一个正确答案,并 标在答题纸的相应位置。（每题2分，共20分） 短文理解1 41.B 42. B 43. A 44. B 45. D 短文理解2 46. D 47. A 48. B 49. B 50.D
Unit1 ( b ) 1. dull a. someone’s mind ( c ) 2. pump b. knife ( e ) 3. sweep c. water ( a) 4. read d. throat ( f ) 5. turkey e. the floor ( g ) 6. sore f. dinner 1. After a hectic week treating patients with sore throats and ear infections at his family practice, the 52-year-old physician was ready for a night of home cooking and fellowship at his church’s annual fund -raising dinner. 这位52岁的内科医生在他的家庭诊所忙碌了整整一个星期，治疗那些患有 咽喉疼痛或耳朵感染的病人，这时正准备在他所属教会的年度筹款晚宴上享 受一些家常烹饪，并和教友相聚。 2. They’d simply heard about the good food and were willing to pay $10 to heap their plates and help pay for the church’s new community center. 许多人甚至不是这个教会的会员，他们只是听说这里有美食，愿意花上10 美元饱餐一顿，同时为教会的新活动中心做点贡献。 3. He was relieved to see that his wife had found a clean paring knife. 当他看到妻子给他找到了一把干净的水果刀才放了心。 4. Fortunately, her family never went anywhere without an emergency kit containing a manual resuscitator bag, just in case Shaun had trouble breathing. 庆幸的是，她的家人出门总是带着急救箱，里面有手动苏醒气囊，这是以防 肖恩出现呼吸困难而准备的。 5、We are so thankful that in this age of lawsuits, Dr. Boll was willing to put himself on the line. 在这个容易惹上官司的时代，博尔医生敢于冒这样的风险，挺身而出，实在是太 让人感激了。 Unit2 d. a place made or chosen by a bird to lay its eggs in and to live in 4. give away ( ) c. to cause to be attracted and interested 3. call out ( ) b. to keep a particular quality, feature, etc.2. thrilled ( ) a. to say something loud; shout 1. claw ( )
数据通信第三阶段作业集团标准化工作小组 #Q8QGGQT-GX8G08Q8-GNQGJ8-MHHGN#
一、判断题（共10道小题，共分） 1. (错误) 所有分组网的分组平均长度一律选为128字节。 A. 正确 B. 错误 2.虚电路与逻辑信道的概念相同。 A. 正确 B. 错误 3. (错误) 虚电路方式中数据分组不必路由选择。 A. 正确 B. 错误 4. 普通用户的公有IP地址一般采用动态分配方式。 A. 正确 B. 错误 5. IP协议提供的是可靠、面向连接的IP数据报传送服务。 A. 正确 B. 错误
6. (错误) 建议是各种终端与DCE之间的接口。 A. 正确 B. 错误 7. (错误) 基本型传输控制规程比HDLC的传输效率低。 A. 正确 B. 错误 8.建议是非分组型DTE与DCE的接口规程。 A. 正确 B. 错误 9.分组交换中虚电路方式是面向连接的，它与电路交换相同。 A. 正确 B. 错误 10. (错误)
分组交换的传输时延大小介于电路交换与报文交换之间。 A. 正确 B. 错误 二、单项选择题（共10道小题，共分） 1. (错误)帧中继发展的必要条件有 A. 传输效率高 B. 光纤传输线路的使用和用户终端的智能化 C. 网络时延小 D. 有效的带宽利用率 2.虚电路方式的特点为 A. 一次通信具有呼叫建立、数据传输和呼叫清除3个阶段 B. 终端之间的路由在数据传送前已被决定 C. 对网络拥塞和故障的适应能力较强 D. 1和2 3. (错误) 电路利用率最低的交换方式为 A. 电路交换 B. 报文交换 C. 分组交换 D. 帧中继 4. (错误) 允许异种终端相互通信的交换方式有
新视野大学英语3第三版课文翻译 Unit 1 The Way to Success 课文A Never, ever give up! 永不言弃！ As a young boy, Britain's great Prime Minister, Sir Winston Churchill, attended a public school called Harrow. He was not a good student, and had he not been from a famous family, he probably would have been removed from the school for deviating from the rules. Thankfully, he did finish at Harrow and his errors there did not preclude him from going on to the university. He eventually had a premier army career whereby he was later elected prime minister. He achieved fame for his wit, wisdom, civic duty, and abundant courage in his refusal to surrender during the miserable dark days of World War II. His amazing determination helped motivate his entire nation and was an inspiration worldwide. Toward the end of his period as prime minister, he was invited to address the patriotic young boys at his old school, Harrow. The headmaster said, "Young gentlemen, the greatest speaker of our time, will be here in a few days to address you, and you should obey whatever sound advice he may give you." The great day arrived. Sir Winston stood up, all five feet, five inches and 107 kilos of him, and gave this short, clear-cut speech: "Young men, never give up. Never give up! Never give up! Never, never, never, never!" 英国的伟大首相温斯顿·丘吉尔爵士，小时候在哈罗公学上学。当时他可不是个好学生，要不是出身名门，他可能早就因为违反纪律被开除了。谢天谢地，他总算从哈罗毕业了，在那里犯下的错误并没影响到他上大学。后来，他凭着军旅生涯中的杰出表现当选为英国首相。他的才思、智慧、公民责任感以及在二战痛苦而黑暗的时期拒绝投降的无畏勇气，为他赢得了美名。他非凡的决心，不仅激励了整个民族，还鼓舞了全世界。 在他首相任期即将结束时，他应邀前往母校哈罗公学，为满怀报国之志的同学们作演讲。校长说：“年轻的先生们，当代最伟大的演说家过几天就会来为你们演讲，他提出的任何中肯的建议，你们都要听从。”那个激动人心的日子终于到了。温斯顿爵士站了起来——他只有5 英尺5 英寸高，体重却有107 公斤。他作了言简意赅的讲话：“年轻人，要永不放弃。永不放弃！永不放弃！永不，永不，永不，永不！” Personal history, educational opportunity, individual dilemmas - none of these can inhibit a strong spirit committed to success. No task is too hard. No amount of preparation is too long or too difficult. Take the example of two of the most scholarly scientists of our age, Albert Einstein and Thomas Edison. Both faced immense obstacles and extreme criticism. Both were called "slow to learn" and written off as idiots by their teachers. Thomas Edison ran away from school because his teacher whipped him repeatedly for asking too many questions. Einstein didn't speak fluently until he was almost nine years old and was such a poor student that some thought he was unable to learn. Yet both boys' parents believed in them. They worked intensely each day with their sons, and the boys learned to never bypass the long hours of hard work that they needed to succeed. In the end, both Einstein and Edison overcame their childhood persecution and went on to achieve magnificent discoveries that benefit the entire world today. Consider also the heroic example of Abraham Lincoln, who faced substantial hardships,
Band Ⅲ(Teacher’s Book) Unit 1 Part A 1. W: What kind of account do you want to open? M: A regular savings account. Q: Where did this conversation probably take place? (D) 2. W: Let’s get a snack when the base ball game is over. M: When it’s over! I’m dying of hunger now. Q: What does the man mean? (A) 3. M: Jane’s quite keen on traveling, isn’t she? W: Yes, she often goes for weeks at a time. Q: What does the woman say about Jane? (B) 4. W: Are you going with me to have a walk? M: I’d love to. But today I am having my hands full with a report. Q: What does the man mean? (C) 5. M: Sue, that report on my desk has to be finished today, but I’m sick and can’t come to the office. W: I see the report, Bill. I’ll finish it for you. Q: Where is Sue now? (C) 6. W: How long did you have for the exam? M: We were allowed two hours, but I finished in less than half the time. Q: How much time did the man take for the exam? (B) 7. W: Why don’t you like Jane? M: Jane means well, but she is so stubborn that I just don’t care for her. Q: Why doesn’t the man like Jane? (B) 8. M: Have you started writing your paper for history? W: Not yet. I’m still writing up my laboratory assignments for chemistry and studying for my midterms in English and French. Q: What must the woman begin to prepare? (A) 9. W: Are you glad that you came to Washington? M: Yes, indeed. I’d considered going to New York or Boston, but I’ve never regretted my final decision. Q: Where is the man? (D) 10. M: Now, what seems to be the trouble, Mrs. Stephens? W: I’ve been very dizzy lately, and at night I had some chest pain. Q: What is the probable relationship between the two speakers? (D) Part B Passage Ⅰ Questions 11 to 15 are based on the following conversation: M: Are you feeling OK, Jane? You look pretty tired. W: My sister and I had a birthday party for my brother last night. I didn’t get much sleep.
Unit1 Mr. Doherty Builds His Dream Life The passage mainly talked about the dream life of the author with his family on a farm, where the author could write and live. The author viewed his life in the country as a self-reliant and satisfying one, but sometimes the good life would get very hard. On the first winter, the author was fond of every minute instead with his family, which they would never forget, while the follow spring brought two floods, which made them amazed. After quitting his job, the author’s income was reduced, but he and his family were able to manage to get by. Besides, he ran a farm and benefited more from it. A tolerance for solitude and a lot of energy had made it possible for the family to enjoy their life in the country. What’s more, they also had found the lifestyle that they preferred in this place. Unit 2 The Freedom Givers The passage mainly talked about three persons, Josiah Henson, John Parker and Levi Coffin, who were the givers of freedom for black slaves in the American history. Besides, the author praised the exploits of civil-rights heroes who helped slaves travel the Underground Railroad to freedom by citing more examples. What’s more, it was high time to honor the heroes who helped liberate slaves by forging the Underground Railroad in the early civil-rights struggles in America. After winning his own freedom from slavery, John Parker helped other slaves to escape north to Canada and freedom. Supported by a strong religious conviction, the white man Levi Coffin risked himself to help many black slaves to escape. At last, by traveling the Underground Railroad, Josiah Henson reached his destination and became free. Unit 3 The Land of the Lock The passage mainly talked about the land of lock, which happened in American. When the author was young, it was the local custom for people to leave the front door at night but didn’t close it, and none of them carried keys. However, nowadays those days were over, and the era of leaving the front door on the latch has drawn to a close. What a great change was that no locking had been replaced by dead-bolt locks, security chains, electronic alarm systems and so on. Therefore, the lock became the new symbol of America. What’s more, a new atmosphere of fear and distrust had crept into every aspect of daily life. As a result, security devices, in varied forms, were put to use. In locking their fears out, they became prisoners of their own making. Unit 4 Was Einstein a Space Alien The passage mainly talked about Albert Einstein, who was a young husband and father with a bushy hair. In order to support his young family, with a poor sleep, he had to work hard at the Patent Office so that he was very tired. For which, he felt all the pressure and responsibility. However, aiming to relax himself, he made astonishing achievements in physics and thus revolutionized the field with five papers about spare time, which were of great impact on all over the world. Because
年级：09秋专业：行政管理层次：本科姓名：张冠英学号：0913001251460 第一部分交际用语 1.– I haven't seen Belly for 10 years. （B） A. Either have I B. Neither have I C. Haven't I D. So have I 2.– What subjects are you studying? （C） – . A. Yes, I'm studying history B. I'm studying now C. I'm studying philosophy D. I'm doing my homework 3.– I wonder if you could help me. （D） – . A. I could B. Yes, I do C. No, not at all D. Of course 4.– Hurry up. The lecture begins at 2:00. （A） –A. Don't worry. We've got 20 minutes B. Thank you. No hurry C. The lecture is useful D. Never mind. You go if you like 5.– David, you've been losing your temper over nothing lately. （C）– . A. I haven’t been getting much sleep either B. You’d better not push yourself too hard, or you’ll get sick C. I’m sorry. I shouldn’t have blown up like that D. You’d better do exercises regularly 6.– Excuse me, I didn't mean to bother you. （C） – . A. There's no problem B. It's a pleasure C. That's quite all right D. I didn't realize that 7.– Thanks a lot. You've gone to so much trouble. （A） – . A. It's no trouble at all B That's all right. I like it C. I don't think it's a trouble D.at's very kind of you 8.– I've ordered pizza and salad. What else do you want? （C） – . A. You are kind to invite me B. Yes, please C. I find pizza is tasty D.beer is fine for me. I'm not hungry yet 9.– What would you like, tea or coffee? （B） . A.Yes, I would B.Coffee, please CYes, please DIt's very nice 10.– Hello, could I speak to Don please? （D） A. Who are you B. What's the problem. C. Are you Jane D. Who's speaking 第二部分词汇与结构 1.Not until most of the people had left the airport ___ his sister wa s there. （C） A. that he saw B. had he seen C. did he see D. that he had seen 2.They are _________ students that they all performed well in the nat ionwide examinations. （B） A. so diligent B. such diligent C. so much diligent D. such very dili gent 3.She paid the builder _________ the gate. （A） A. to repair B. repair C. Repairing D. repaired 4.We __________ every day when we were children. （A） A. used to swim B. used to swimming C. use to swim D. use to swimming
一 生母：biological mother 收养某人：put sb up for adoption 签署最终的领养文件：sign the final adoption papers 无意间进入演艺界：stumble into acting 凭好奇心与直觉：followiong curiosity and intuition 实际用途： practical application Ralented adoption intuition dropped fascinating 每当我看到那顶草帽：everytime I saw the straw hat 我度过的最美好的时光：the best time I spent 我很荣幸能参加大会闭幕式：I'm honored to attend conference of closing ceremony 有希望调解：have a hope of make peace 辞去那份工资高但要求也高的工作： 1、I dropped out of Reed College after the first 6 months,but then stayed around as a drop-in for another 18 months or so before I really quit. 里德学院读了半年后就辍学了，但在我真正离校之前，作为旁听生我还读了18个月。 2、My biological mother was a young,unwed college graduate student,and she decided to put me for adoption. 我的生母是一个年轻，未婚的研究生，她决定让别人来收养我。 3、It was pretty scary at the time,but looking back it was one of the best decisions I ever made. 这在当时引起了我的恐慌，但是后来回想一下这或许是我所做的最棒的决定之一。 4、And much of what I stumbled into by following my curiosyty and intuition turned out to be priceless later on. 凭我的好奇心和直觉所涉足的许多事情最后被证明是无价的。 5、None of this had even a hope of any practical application in my life. 这在我的生活中甚至没有半点实际应用的希望。 二 alluded incentive disbelief roll affluent 曾经拥有中东巴黎的美誉：Once known as the paris of the Middle East 是为了任命一位新经理：for the purpose of appointing a new manager 好得让人无法拒绝：too good to pass up 据说已经遇害：said to have been killed 仍然不清楚：It is still unclear 1、However,if that weren't a popular notion, millions of dollars wouldn't roll in every time there was a lottery somewhere.