搜档网
当前位置:搜档网 › 北京邮电大学网络教育大学英语2自测作业6(参考)

北京邮电大学网络教育大学英语2自测作业6(参考)

北京邮电大学网络教育大学英语2自测作业6(参考)
北京邮电大学网络教育大学英语2自测作业6(参考)

非谓语动词练习1. 动名词和不定式做主语及非谓语动词做表语

1. __________ a language requires time and effort.

A. Learn

B. Learning

C. To learn

D. Being learned

2. It is not always easy __________ invitations.

A. to refuse

B. refusing

C. to be refused

D. being refused

3. __________ now seems impossible.

A. Saving money

B. To save money

C. Being saved money

D. To be saved money

4. To answer correctly is more important than __________

A. a quick finish

B. to finish quickly

C. finishing quickly

D. you finish quickly

5. How __________ the problem will be discussed at tomorrow’s meeting.

A. to solve

B. to be solved

C. being solved

D. solving

6. It was polite _________ the child to give up his seat to the elderly woman.

A. for

B. of

C. to

D. with

7. Is it necessary __________ the book immediately?

A. for him to return

B. that he returns

C. his returning

D. of him to return

8. It __________ forty-five minutes __________ there by bus.

A. cost, to get

B. takes, getting

C. takes, to get

D. takes, to get to

9. It is no good __________. You should give_________.

A. to smoke, it up

B. smoking, it up

C. smoking, up it

D. to smoke, up it

10. It is no __________ debating with Tom, because he will never change his mind.

A. use

B. help

C. time

D. while

11. Do you consider it any good __________ again?

A. to try

B. try

C. trying

D. for you to try

12. I don’t think it’s much good __________ to him.

A. writing

B. to write

C. to be written

D. being written

13. __________ the assignment made his father lose his temper.

A. The boy’s not having done

B. The boy not having done

C. The boy’s having not done

D. The boy having not done

14. I don’t remember __________ about it.

A. him telling us

B. his telling us

C. him to tell us

D. he tells us

15. Her wish is __________ an engineer.

A. becoming

B. become

C. to become

D. being come

16.Some people’s greatest pleasure is __________.

A. fishing

B. to fish

C. to be fishing

D. being fish

17. The report was so __________ that they were all __________.

A. inspiring, exciting

B. inspiring, excited

C. inspired, excited

D. inspired, exciting

18. ---“You look pale.” ---“I feel a little __________.”

A. tire

B. tired

C. tiring

D. tiresome

19. He seems __________ here for three years.

A. to be living

B. to have lived

C. to have been lived

D. to live

20. ---“What’s made you so upset?”

---“_________ three tickets to the pop music concert.”

A. Lost

B. Losing

C. Because of losing

D. Since I lost

答案:

1-5 BABBA 6-10 BACBA 11-15 CAABC 16-20 ABBBB

选自外研社《高中英语语法练习手册》高中英语多媒体教室

非谓语动词练习2. 动名词和不定式作宾语的区别(一):

21. I like __________ very much, but I don’t like _________ this morning.

A. swimming, swimming

B. to swim, to swim

C. swimming, to swim

D. to swim, swimming

22. Little Jim should love __________ to the theatre this evening.

A. to be taken

B. to take

C. being taken

D. taking

23. ---“Did you close the door?” ---“Yes, I remember __________ it.”

A. to close

B. to closing

C. closing

D. closed

24. Remember __________ the newspaper when you have finished it.

A. putting back

B. having put back

C. to put back

D. will put back

25. I’m sorry I forgot _______ your dictionary. Let’s borrow one from Li Ming.

A. to take

B. taking

C. to bring

D. bringing

26. Henry always forgets things he has done. Yesterday he forgot __________ and looked for it everywhere.

A. to post the letter

B. to have the letter posted

C. to have posted the letter

D. having posted the letter

27. My brother regretted __________ a lecture given by Professor Liu.

A. missing

B. to miss

C. missed

D. being missed

28. I regret __________ you that we are unable to offer you a job.

A. informing

B. having informed

C. to inform

D. to informing

29. I felt tired with walking, so I stopped __________ a break for an hour.

A. having

B. to have

C. taking

D. to taking

30. The teacher told the students to stop __________ to him.

A. to write and listen

B. writing and listening

C. to write and listening

D. writing and to listen

31. ---“What can we do to help Li Hai.”

---“All we can do is to try __________ that he ought to study more.”

A. making him to realize

B. making him realize

C. to make him realize

D. to make him to realize

32. You didn’t hear us come in last night. That’s good. We tried ____ noisy.

A. to be not

B. not to be

C. not being

D. being not

33. He finished his homework, then he went on __________ a letter.

A. write

B. writing

C. with

D. to write

34. The grass has grown so tall that it needs _________.

A. to cut

B. to be cut it

C. cutting

D. being cut

35. ---”You’ve come just in time to help us.”

---“Fine, what needs __________?”

A. I do

B. done

C. to be done

D. to do

36. You didn’t need __________ him the news; it just made him sad.

A. telling

B. tell

C. to tell

D. that you would tell

37. These young trees require __________ carefully.

A. looking after

B. to look after

C. to be looked at

D. looking for

38. The sentence wants __________ once more.

A. to explain

B. explaining

C. being explained

D. to be explained it

39. He h asn’t got used __________ in the countryside yet.

A. live

B. to live

C. to living

D. living

40. A very well-known person __________ in this house.

A. is used to live

B. used to live

C. is used to living

D. used to living

41. The clock was beginning __________ twelve and everybody held their breath.

A. strike

B. to strike

C. striking

D. struck

42. I begin __________ the meaning, which begins __________.

A. understanding, to be clear

B. to understand, to be clear

C. understanding, being clear

D. to understand, being clear

43. The police forbid __________ here.

A. park

B. parking

C. to park

D. to be parked

44. The heavy rain forbade me __________ to school.

A. from my coming

B. to come

C. come

D. my coming

45. Tom’s parents do not allow Tom __________ swimming.

A. going

B. to go

C. go

D. goes

46. Sorry, we don’t allow __________ in the lecture room.

A. to smoke

B. smoke

C. smoking

D. to smoking

47. Visitors are not permitted __________ the park after dark, because of the lack of lighting.

A. to enter

B. entering

C. to enter in

D. entering in

48. They don’t permit __________ noise her.

A. to make

B. make

C. making

D. made

49. Missing the train means __________ for an hour.

A. to wait

B. to be waited

C. being waited

D. waiting

50. I meant __________ you, but I was so busy.

A. to call on

B. calling on

C. to call at

D. calling at

答案:21-25 CACCC 26-30 DACBD 31-35 CBDCC 36-40 CABCB 41-45 BBBBB 46-50 CACDA

选自外研社《高中英语语法练习手册》高中英语多媒体教室非谓语动词练习3. 动名词和不定式做宾语的区别(二):

51. I would appreciate __________ back this afternoon.

A. you to call

B. you call

C. your calling

D. you’re calling

52. She enjoys __________ light music.

A. to hear

B. hearing

C. listening to

D. to listen to

53. You can keep the book until you __________.

A. have finished reading

B. finish to read

C. will finish reading

D. have finished to read

54. Ali said that she wouldn’t mind _________ alone at home.

A. left

B. being left

C. to be left

D. leaving

55. If you keep __________ English, you can learn English well.

A. practising speak

B. practising speaking

C. practising to speak

D. to practise spoken

56. Our monitor suggested __________ a discussion of the subject.

A. to have

B. should have

C. have

D. having

57. We are considering _________ a new plan.

A. making

B. being made

C. to make

D. to have made

58. The squirrel was lucky that it just missed __________.

A. catching

B. to be caught

C. being caught

D. to catch

59. Can you imagine yourself __________ on a desert island?

A. staying

B. stay

C. have stayed

D. being stayed

60. We can understand why he avoids __________ to us.

A. to speak

B. speech

C. having spoken

D. speaking

61. Please excuse my _________ in without _________.

A. come, asking

B. coming, asking

C. to come, being asked

D. coming, being asked

62. Why have they delayed __________ the new school?

A. opening

B. to open

C. having opened

D. to have opened

63. She __________ the key.

A. admited taking

B. admitted taking

C. admitted having taken

D. admitted to have taken

64. I got to the station earlier than others. I couldn’t risk ___________ the train.

A. missing

B. would miss

C. to miss

D. missed

65. I hope __________ him as soon as possible.

A. see

B. seeing

C. to see

D. to have seen

66. I expected __________ your friend, but my car broke down on the way.

A. I’ll meet

B. meeting

C. to meeting

D. to meet

67. We are planning __________ Europe this summer.

A. to pay a visit

B. pay a visit to

C. visiting

D. to visit

68. She told me that she had decided __________ again.

A. be not late

B. not be late

C. not to be late

D. to be not late

69. Almost everyone fails __________ on the first try.

A. in passing his driver’s test

B. to pass his driver’s test

C. to have passed his driver’s test

D. passing his driver’s test

70. The two weavers pretended __________ very hard, though they did nothing at the looms.

A. work

B. working

C. to be worked

D. to be working

71. When he got off the train, it happened __________.

A. to rain

B. to be raining

C. raining

D. to raining

72. I didn’t __________ it until you had explained how.

A. manage to do

B. managed to do

C. manage to have done

D. manage doing

73. The young driver offered _________ the patient out of the car.

A. to hand

B. handing

C. hands

D. would hand

74. The white horse refused __________ the stone wall.

A. its jumping

B. to jump

C. jumping up

D. to jump at

75. They don’t agree __________ more time on the subject, neither do I.

A. to spending

B. to spend

C. with spending

D. on spend

答案:51-55 CCABB 56-60 DACAD 61-65 DACAC 66-70 DDCBD

71-75 BAABB

选自外研社《高中英语语法练习手册》高中英语多媒体教室

非谓语动词练习4. 动名词和不定式的惯用法

76. Though it began _________, they kept on _________ in the field.

A. raining, work

B. to rain, working

C. raining, with the work

D. to rain, to work

77. His parents insisted on __________ to college.

A. he should go

B. he go

C. his going

D. him to go

78. What a pity! One cannot help __________ sorry for the injured.

A. to feel

B. oneself to feel

C. feeling

D. oneself from feeling

79. He decided __________ piano because he was tired of it.

A. to give teaching up

B. giving up teaching

C. to give up teaching

D. to give in teaching

80. Nothing could __________ the boy from __________ the tall building.

A. prevent, risking climbing

B. prevent, risking to climb

C. stop, risk climbing

D. keep, risking climb

81. On Sundays I prefer __________ at home to __________ out.

A. to stay, go

B. staying, go

C. staying, going

D. to stay, going

82. How much time did you spend __________ the text.

A. copying

B. to copy

C. in copy

D. on copying

83. After cooking, Mother __________ making tea.

A. set out

B. set about

C. set off

D. start out

84. I __________ see you without __________ your mother.

A. never, thinking of

B. never, thinking about

C. not, think of

D. don’t, think about

85. Though it sounds a bit too dear, it is worth __________.

A. being bought

B. buying

C. to buy

D. buying it

86. The novel is well __________.

A. worth to read

B. worth being read

C. worthy to read

D. worthy of being read

87. The farmers were busy __________ cotton.

A. to pick

B. picking

C. with picking

D. pluck

88. He devoted his life to __________ the atomic theory.

A. study

B. be studied

C. studying

D. have studied

89. We are both looking forward to __________ next week.

A. going on vacation

B. go on vacation

C. be going on vacation

D. have gone on vacation

90. Her parents objected to __________ that farmer, though he has a lot of money.

A. her marrying

B. marrying

C. marry

D. her marrying with

91. If you want to be a writer, I suggest that you should pay attention to __________ the works of Lu Xun.

A. read

B. reading

C. reader

D. be read

92. He is an experienced driver and he is used __________ in all kinds of weather.

A. to driving

B. to drive

C. for driving

D. to have driven

93. Because of the heavy rain, they had to put off __________ the sports meet.

A. taking place

B. to take place

C. holding

D. to hold

94. On __________ the news, she turned pale.

A. heard

B. hearing

C. having heard

D. her hearing

95. ---“Did you get in touch with them later?”

---“Yes, I finally succeeded __________ them by phone.”A. to reach B. to reaching C. reaching D. in reaching

96. I didn’t feel __________ going out fo r a walk.

A. so

B. as

C. rather

D. like

97. You should work tonight instead of _________ TV.

A. to watch

B. you watching

C. you watch

D. watching

98. Besides _________, she is kind and tender.

A. beautiful

B. being beautiful

C. she beautiful

D. is beautiful

99. What about __________ to the concert with us?

A. we go

B. we going

C. going

D. to go

100. Hadn’t we better __________ a rest before going on?

A. have

B. than

C. to have

D. to take

101. You’d better _________ her the sad news now.

A. not to tell

B. won’t tell

C. not tell

D. don’t tell

102. I’d rather lose the game __________.

A. not to hurt him

B. not hurt him

C. than to hurt him

D. than hurt him

103. Alice says _________ tonight, because there will be an exam tomorrow morning.

A. she’d rather not go

B. she’d not rather go

C. she’ll rather not go

D. she won’t rather go

104. Tom did nothing but _________ back what he had said.

A. taken

B. took

C. taking

D. take

105. There seemed nothing else to do but __________ a doctor.

A. to send for

B. send for

C. call for

D. to call in

106. ---“I usually go there by train.”

---“Why not __________ by boat for a change?”

A. to try going

B. trying to go

C. to try and go

D. try going

107. Please _________ me at the station on time.

A. to meet

B. meeting

C. meet

D. you meet

108. Have I any choice but __________as you tell me?

A. to do

B. do

C. doing

D. I’ll do

109. I can’t but ________ to hear such a story.

A. to laugh

B. laugh

C. laughing

D. to laughing

110. ---“Would you like to go with us for a picnic tomorrow?”---“Yes, __________.”

A. I would like

B. I’d like to go

C. I’d love

D. I’d like to

111. He wanted to go, but he __________.

A. wasn’t able to

B. wasn’t able to go

C. wasn’t able

D. couldn’t able to

112. I don’t want to speak to you, but I ___________.

A. have to speak

B. have to

C. must to speak

D. must speak

113. ---“Did you get a ticket?”

---“No, I _________, but there weren’t any left.”

A. did

B. don’t get

C. didn’t

D. didn’t get

114. She didn’t know __________ her books or _________ for reference.

A. whether sell, keep them

B. whether to sell, to keep them

C. to sell whether, to keep them

D. if to sell, should keep them

115. Will you show me _________ my bike?

A. to put in where

B. to where put where

C. where to put

D. where to put in

答案:76-80 BCCCA 81-85 CABAB 86-90 DBCAA 91-95 BACBD

96-100 DDBCA 101-105 CDADB 106-110 DCABD 111-112 ABCBC

选自外研社《高中英语语法练习手册》高中英语多媒体教室

非谓语动词练习5. 不定式做宾语补足语

116. Soon they saw the boy _________ in the crowd.

A. disappear

B. to disappear

C. disappears

D. disappeared

117. Did you notice the little boy __________ away?

A. took the candy and run

B. take the candy and run

C. taking the candy and run

D. who taking the candy running

118. I heard him __________ so.

A. says

B. saying

C. say

D. said

119. Shall we go and listen to the reviewers __________ on the new film?

A. to comment

B. comment

C. to commenting

D. being comment

120. Professor Black had us __________ compositions every Friday.

A. to write

B. written

C. write

D. writing

北邮大学英语3阶段作业一

一、阅读理解(共1道小题,共50.0分) 1. Americans with small families own a small car or a large one. If both parents are working, they usually have two cars. When the family is large, one of the cars is sold and they will buy a van(住房汽车) A small car can hold four persons and a large car can hold six persons but it is very crowded. A van hold seven persons easily, so a family with three children could ask their grandparents to go on a holiday travel. They could all travel together. Mr. Hagen and his wife had a third child last year. This made them sell a second car and buy a van. The sixth and seventh seat are used to put other things, for a family of five must carry many suitcases when they travel. Americans call vans motor homes. A motor home is always used for holidays. When a family are traveling to the mountains or to the seaside, they can live in their motor home for a few days or weeks. All the members of a big family can enjoy a happier life when they are traveling together. That is why motor homes have become very popular. In America there are many parks for motor homes. 1. From the passage, a motor home is also called ______. A. a motor car B. a motorbike C. a big truck D. a van 2. A family owns a motor home usually with ______. A. more than two children B. interest in vans C. a baby D. much money 3. Americans with a small family and with two parents working usually have ______. A. a car B. two cars C. two vans D. a van 4. What is the main use of motor homes for Americans? A. to do some shopping with all the family members B. to drive their children to school every day C. to travel with all the family members for holidays

北邮网络学院大学英语2阶段作业3

一、阅读理解(共1道小题,共25.0分) 1. A pretty, well―dressed young lady stopped a taxi in a big square, and a said to the driver, "Do you see that young man at the other side of the square?" "Yes," said the taxi driver. The young man was standing outside a restaurant and looking impatiently (不耐烦地) at his watch every few seconds. "Take me over there," said the young lady. There were a lot of cars and buses in the square, so the taxi driver asked, "Are you afraid to cross the street?" "Oh, no!" said the young lady. "But I promised that I would meet the young man for lunch at one o' clock, and it is now a quarter to two. If I arrive in a taxi, it will at least seem as if I had tried not to be late." 1.How did the young woman get to the square? A.She arrived in a taxi. B.She drove there in a car. C.She got there by bus. D.The story doesn't tell us. 2.Why did the lady stop the taxi? A.Because she didn't want to be late for her appointment (约会). B.Because she wanted to get out of the taxi. C.Because she wanted to go to the restaurant in it. D.Because she was afraid of walking across the street. 3.The young man at the other side of the square_______. A.had probably been waiting for a long time B.had some problem with his watch C.was probably a waiter of the restaurant D.was someone the young lady didn't want to see 4.The young lady was_______. A.clever at making excuse B.not late at all C.45 minutes earlier D.15 minutes late 5.Had she tried not to be late? A.Yes, she had tried her best. B.No, she was just pretending that she had tried. C.Yes, she had tried but she was still late. D.No, she thought being late was better than being early.

北邮计算机网络期末考试样题

《计算机网络》期末考试样题 一.单项选择题(共15分,每题1分) 1.()下列关于ADSL描述哪个是错误的 A. 实现了全双工通信,在两个方向上的传输速率可以不同 B. 使用基带传输方案,不需要像MODEM那样对数据进行调制, 所以ADSL一般比MODEM提供更高的通信速率 C. ADSL通信与普通电话机的语音通信使用完全相同的传输介质 D. ADSL仅仅是一个物理层标准 2.()在有传输误码的数据信道上传输数据,下列哪种方法不能正确地 实现链路层的成帧处理 A. 字符计数法 B. 字节填充法 C. 比特填充法D.物理层编码违例法 3.()如果用户计算机通过电话网接入因特网,则用户端必须具有: A. NAT网关 B. 以太网交换机 C. 集线器 D. 调制解调器 4.()链路层协议采用选择重传滑动窗口协议,其中数据帧编号采用8 比特,发送窗口的最大值是: A.256 B. 255 C. 128 D. 127 5.()以下哪个是正确的以太网地址 A. B. e0-2b-37 C. 00-30-2c-45-bc-2d D. 8000::126:376e:89bc:5c2e 6.()IP路由器属于哪一层的互连设备 A.物理层 B. 链路层 C. 网络层 D. 传输层 7.()下列哪种指标不是用来衡量网络服务质量(QoS)的主要指标 A.分组延迟时间B.到达抖动时间 C.分组生存时间 D. 分组传输带宽 8.()某同学在校园网访问因特网,从该同学打开计算机电源到使用 命令ftp 连通文件服务器的过程中,哪个协议没有使用到 A.IP B.ICMP C.ARP D. DHCP 9.()某主机的IP地址为子网掩码为,当这台主机在子网内发送广播 数据报时,IP数据报中的源地址为 A. B. 10.C. D. ()某校分给数学教研室的IP地址块为,分配给 外语教研室的地址块为,分配给物理教研室的地址块为。这三个地址块经过聚合后的地址块为: 11.A. B. D. ()关于TCP/IP协议特点的描述中,错误的是 A. IP提供尽力而为的服务,无法保证数据可靠到达 B. TCP是面向连接的传输协议 C. UDP是可靠的传输协议 D. TCP/IP协议可以运行于多种操作系统 12.()在TCP/IP网络中,转发路由器对IP数据报进行分片的目的是: A. 提高路由器的转发效率

全国高校网络教育大学英语统考(B)试题及答案(1)

全国高校网络教育大学英语统考(B)试题及答案(1) Part I 日常会话 1. – Hello, may I talk to the headmaster now?-- A. Sorry, he is busy at the moment B. No, you can’t C. Sorry, you can’t D. I don’t know 2. -- Do you think I could borrow your dictionary?-- A. Yes, you may borrow B. Yes, go on C. Yes, help yourself D. It doesn’t matter 3. -- Is that Mr Robert Lee?-- A. Yes, Lee speaking. B. Hello, what do you want? C. Sorry, speaking. D. I don’t know. 4. –Excuse me, sir. Where is Dr. Brown’s office?-- A. You can’t ask me B. Pardon? I have no idea C. Please don’t say so D. Sorry, I don’t know, but you can ask the man over there 5. – Mary, your dress is really beautiful. How is John?-- A. Thank you very much B. No, no, John is not bad C. Thank you. He is fine D. Don’t say that. It’s ugly. John is good 6. – What can I do for you, madam?-- . A. I want a kilo of apples B. You can go your own way C. Thanks D. Excuse me. I’m busy 7. –I’d like to take you to the coffee house on t he corner.- A. Thank you. You shouldn’t do that B. Thanks, I’d like to go with you C. No, you can’t say so D. No, no. You can’t do that 8. –Do you mind telling me where you’re from?-- A. Certainly. I’m from London B. Sure. I was b orn in London C. Not really, you can do it D. Certainly not. I’m from London 9. – May I see the menu, please?-- A. That is the menu, sir. B. Yes, please go on. C. Here you are, sir. D. Of course, sir. 10. – I was worried about chemistry, but Mr Brown gave me an A !-- . A. Don’t worry about it B. Congratulations! That’s a difficult course C.Mr Brown is very good D. Good luck to you! 1. – Would you like to have dinner with us this evening?-- A. OK, but I have to go to a meeting now B. No, I can’t C. I’d love to, but this evening I have to go to the airport to meet my parents D. I don’t know 2. – Hi, is Mary there, please?-- A. Hold on. I’ll get her. B. No, she isn’t here. C. Yes, she lives here. D. Yes, what do you want? 3. – Please help yourself to the fish.-- . A. Thanks, but fish doesn’t agree with me B. Sorry, I can’t help C. I don’t like fish D. No, I can’t 4. –Hurry up, please, or I’ll be late.-- . A. Sorry sir, but the traffic is thick now B. Well, it’s alright, sir C. How can you say that, sir? D. Oh, we are going the right way

北邮大学英语3第二阶段作业1

一、单项选择题(共10道小题,共100.0分) 1.Water __________ through the pipes. A.flashed B.fused C.flushed D.fluttered 知识点: 阶段作业二 学生答案: [C;] 标准答 案: C 得分: [10] 试题分 值: 10.0 提示: 2.Mary _________ with embarrassment when she couldn’t answer the question. A.shivered B.worried C.flushed D.scattered 知识点: 阶段作业二 学生答案: [C;] 标准答 案: C 得分: [10] 试题分 值: 10.0 提示: 3.If you think you can do the job, don’t hesitate, just __________. A.go away B.go over C.go ahead D.go off 知识点: 阶段作业二 学生答案: [C;] 标准答 案: C 得分: [10] 试题分10.0

值: 提示: 4.All persons and places mentioned in this book are __________. A.indexed B.indirected C.indisposed D.induced 知识点: 阶段作业二 学生答案: [A;] 标准答 案: A 得分: [10] 试题分 值: 10.0 提示: 5.They waved to one another till the train was __________. A.out of stock B.out of order C.out of sight D.out of action 知识点: 阶段作业二 学生答案: [C;] 标准答 案: C 得分: [10] 试题分 值: 10.0 提示: 6.(错误) Jane is __________ with cold so that her teeth are chattering. A.shaking B.shivering C.quaking D.shocking 知识点: 阶段作业二

计算机网络期末试卷(已看)

学 院 : 专 业 : 学 号 : 姓 名 : …

虚电路方式的原理及特点为:虚电路方式试图将数据报方式与线路交换方式结合起来,处分发挥两种方法的优点,以达到最佳的数据交换效果;数据报方式在分组发送之前,发送方与接收方之间不需要预先建立连接。虚电路方式在分组发送之前,需要在发送方和接收方建立一条逻辑连接的虚电路;虚电路方式与线路交换方式相同,整个通信过程分为以下三个阶段:虚电路建立、数据传输与虚电路释放。 2 简述数据链路层的功能及其实现 答: (1) 链路管理 & (2)帧同步 (3)流量控制 (4)差错控制 (5)寻址 七论述(10'*2=20分): 1 结合OSI/RM和TCP/IP参考模型,谈谈你对网络分层体系结构的理解。 2 结合HDLC和TCP的协议数据单元格式,谈谈你对网络协议的理解。 @ 源端口(16位)目的端口(16位) … 顺序号(32位) 确认号(32位) 报头长度保留码位窗口大小(16位) 校验和(16位)紧急指针(16位) 任选项填充~ 数据域 TCP报文格式 答:OSI参考模型按功能划分为五层:物理层、数据链路层、网络层、传输层和应用层。 物理层主要功能:利用传输介质为通信的网络结点之间建立、管理和释放物理连接;实现比特流的透明传输,为数据链路层提供数据传输服务;物理层的数据传输单元是比特。(1) 数据链路层的主要功能:在物理层提供的服务基础上,数据链路层在通信的实体间建立数据链路连接;传输以“帧”为单位的数据包;采用差错控制与流量控制方法,使有差错的物理线路变成无差错的数据链路(1)网络层的主要功能:通过路由选择算法为分组通过通信子网选择最适当的路径;为数据在结点之间传输创建逻辑链路;实现拥塞控制、网络互连等功能。(1)

全国高校网络教育大学英语统考(B)试题及答案

全国高校网络教育大学英语统考 (B )试题及答案 Test 1 Part I 日常会话 1. — Hello, may I talk to the headmaster now -- A A. Sorry, he is busy at the mome nt C. Sorry, you can ' t 2. -- Do you think I could borrow your dictionary -- .C A. Yes, you may borrow C. Yes, help yourself 3. -- Is that Mr Robert Lee -- A A. Yes, Lee speak ing. C. Sorry, speak ing. 4. — Excuse me, sir. Where is Dr. Brow n - D. A. You can ' t ask me B. Pard on I have no idea C. Please don ' t say so D. Sorry, I don ' t know, but you can ask the man over there 5. - Mary, your dress is really beautiful. How is John -- .C A. Thank you very much C. Thank you. He is fine is good 6. - What can I do for you, madam -- .A A. I want a kilo of apples C. Thanks B. No, you can ' t D. I don ' t know B. Yes, go on D. It doesn ' t matter B. Hello, what do you want D. I don ' t know. 's office I ' d like to take you to the coffee house on the corner. B. You can go your own way D. Excuse me. I ' m busy

北邮大学英语3(新)阶段作业一及答案

北邮大学英语3(新)阶段作业一及答案 一、单项选择题(共10道小题,共100.0分) 1.The doctors________the medicines to the people in the flood area. A.distinguished B.chose C.annoyed D.distributed 2.We took out another________to expand our business. A.lend B.lent C.loan D.load 3.He couldn't________his father that John was telling the truth. A.convince

B.believe C.admit D.display 4.Facing the________situation the sales manager looked________. A.puzzling,puzzled B.puzzling,puzzling C.puzzled,puzzled D.puzzled,puzzling 5.Professor Zhang had two articles published in the_________periodical. A.studying B.learning C.learned D.studied

6.The University________him an honorary degree. A.drained B.awarded C.approached D.glimpsed 7.If you're late again you'll be________from your job. A.referred B.deserted C.omitted D.dismissed 8.They are________as the most promising table-tennis players. A.regarded

网络教育大学英语B统考题库

第一部分交际英语 ……………………………………………………………………………………………………….. ----------------以下红色1-60重点掌握看,可得分值9-12分----------------- 1.-Are you going on holiday for a long time?你度假很长时间吗? -- ____C____ 不是,只是几天。 A. It was a long time B. Two weeks ago. C. No. Only a couple of days. D Not long time ago. 2.-Could you help me with my physics, please? 请问你能帮我做物理课作业吗? -___D___.很抱歉不行。我马上要去开会。(表示歉意要婉转,不能直接说NO 还应加理由)A. No, no way B. No, I couldn’t C. No, I can’t D. Sorry I can’t. I have to go to a meeting right now 3.-Could I speak to Don Watkins, please? 我能和Don Watkins说话吗? - ___A___ 我就是。 A. Speaking, please. B. Oh, how are you? C. I’m listening. D. I’m Don. 4.-Could I borrow your car for a few day? 我能借你的车用几天吗? -____C____.当然可以。给你。祝你旅途愉快。 A. Yes, you may borrow B. Yes, go on C. Sure, here is the key. Enjoy your journey D. It doesn’t matter 5.-Congratulations!You won the first prize in today’s speech contest. -___C___. 祝贺你在今天的演讲比赛中获得冠军。--谢谢你。 A. Yes, I beat the others B. No, no, I didn’t do it w ell C. Thank you D. It’s pleasure 6.-Do you mind my smoking here? 你介意我在这吸烟吗?(介意询问时,YES是表示介意)-_____B____.是的,我介意 A. No, thanks B. Yes, I do C. Yes, I’d rather not D. Good idea 7.- Did you know that David injured his leg yesterday?你知道戴维昨天弄伤了他的腿吗? - Really? ____C___真的吗?发生了什么事? A、Who did that? B、What's wrong with him? C、How did that happen? D、Why was he so careless? 8.-Excuse me, how much is the jacket?请问,这件夹克衫多少钱? -It’s 499 Yuan. ____D____. 499元。你想试一下吗? A. Oh, no. That’s OK! B. How do you like it? C. Which do you prefer? D. Would you like to try it on? 9.-Excuse me, could you show me the way to the nearest post office? 打扰下,你能告诉我最近的邮局怎么走吗? - ___D___Oh yes! Two blocks away from here at the Green Avenue. You can’t miss it. 噢,我想下!从这里过两个街区,在格林大街,你不会错过 A. I beg your pardon? B. What do you m ean? C. You’re welcome. D. Um,let me think. 10.-How are you, Bob?你好吗,鲍勃?-____B____, Ted.我很好,谢谢。

2015北邮大学英语2阶段作业1

一、完形填空(共1道小题,共50.0分) 1. Alfred Adler, a famous doctor, had experience_3__ illustrates this. When he was a small boy he was poor at arithmetic. His teacher got the idea that he had no ability in arithmetic, and told his parents what she thought in order that they would not expect_4__ much of him. __5_ this way, they too developed the idea, “Isn?t it too bad that Alfred can?t do arithmetic?” He accepted their mistaken estimate of his ability, felt that it was __6_ to try, and was very poor at arithmetic, just as they expected. One day Adler succeeded in solving a problem which _7__of the other students had been able to solve. This gave him confidence. He _8___ the idea that he couldn?t do arithmetic and was determined to show them that he could. His new __9__ confidence stimulated him to go at arithmetic problems with a new spirit. He now worked with interest, __10_, and purpose, and he soon became extraordinarily good at arithmetic. a. A. well B. necessary C. in D. good b. A. possible B. possibly C. likely D. like c. A. to B. when C. what D. which d. A. too B. very C. so

北邮《现代通信网》期末复习题(含答案)+阶段作业汇总

现代通信网-综合练习题 一、填空题 1. 所谓通信系统就是用电信号(或光信号)传递信息 的系统,也叫电信系统。 2. 通信网在硬件设备方面的构成要素是终端设备、 传输链路和交换设备。 3. 若按服务范围分,电话网通信网可分为本地网、 长途网和国际网。 ; 4. 通信网的基本结构主要有网形、星形、复合形、 总线形、环形及线形、树形。 5. 未来的通信网正向着数字化、综合化、智能化 和个人化的方向发展 6. 电话通信网通常由用户终端(电话机)、传输信 道和交换机等构成。 7. 我国电话通信网由长途电话网(长途网)和本地 电话网(本地网)两部分组成。 8. 二级结构的本地网,有分区汇接和全覆盖两种结 构。 < 9. 按组成路由的电路群的个数,路由可分为直达路 由和汇接路由两种。 10. 路由选择计划有固定选路计划和动态选路计划 两种。 11. 动态选路方法有时间相关选路(TDR)、状态相 关选路(SDR)和事件相关选路(EDR)三种。12. B-ISDN的业务分为两大类,分别是交互型业务和 分配型业务。 13. B-ISDN的信息传递方式采用异步转移模式(ATM)。< 14. ATM交换包括VP交换和VC交换。 15. ATM协议参考模型的三个平面包括用户平面、控 制平面和管理平面。 16. ATM交换的缓冲排队方式有输入缓冲排队方式、 输出缓冲排队方式和中央缓冲排队方式。 IP协议是IP网络的基础与核心。 18. 宽带IP城域网的结构分为核心层、汇聚层和接入 层三层。 19. 路由器按位置划分有核心路由器和接入路由器。 20. 接入网由业务节点接口(SNI)和用户网络接口 (UNI)之间的一系列传送实体(如线路设施和传 输设施)组成,为供给电信业务而提供所需传送 承载能力的实施系统。 21. 接入网的业务节点接口主要有两种,模拟接口(Z 接口)和数字接口(V5接口)。 22. 根据传输设施中是否采用有源器件,光纤接入网 分为有源光网络 (AON)和无源光网络 (PON)。23. 无源光网络(PON)的拓扑结构一般采用星形、 树形和总线形。 - 24. 无线接入网可分为固定无线接入网和移动无线 接入网两大类。 25. 无线局域网(WLAN)是无线通信技术和计算机网 络相结合的产物。 26. 信令网由信令点(SP)、信令转接点(STP)和 信令链路组成。 27. 三级信令网由高级信令转接点(HSTP)、低级信 令转接点(LSTP)和信令点(SP)三级构成。28. 我国信令网是由长途信令网和大、中城市本地信 令网组成。 【 29. 我国数字同步网的基准时钟有两种:全国基准时 钟(PRC)和区域基准时钟(LPR)。 30. TMN主要从三个方面界定电信网络的管理:管理 层次、管理功能和管理业务。 31. 我国电信管理网的网络结构一般也分为三级,并 且在各级网管机构设置该级的网管中心,即全国 网网管中心、省级网网管中心和本地网网管中心。 32. 没有自环和并行边的图称为简单图。 33. 一般有两种距离测度方法,即欧氏距离测度和矩 形线距离测度。 : 34. 具有n个点的树共有 n-1 个树枝。 35. 排队系统的基本参数包括:顾客到达率、服务员 数目和服务员服务速率。 36. 通信网络规划按时间跨度可分为长期规划、中期 规划和近期规划(滚动规划)。 37. 通信业务预测的内容主要包括用户预测、业务量 预测和业务流量预测。 38. 随着网络规模的不断扩大,局所采用“大容量、 少局点”的布局已显得十分必要。 $ 39. 用户环路的配线方式有直接配线、复接配线和交 接配线。 40. 两交换局间中继路由种类主要由费用比和局间 话务量确定。 二、单项选择题 1. 构成通信网的核心要素是(C)C 交换设备 2. 通信网的下列基本结构中可以采用自愈环的是(C) C 环形网 . 3. 响度、清晰度和逼真度是用来衡量电话通信网的(B)B 传输质量 4. 我国电话网现在采用的等级结构为(B)B 三级 5. 我国在二级长途网上采用选路方式为D)动态无级 6. 话务量不允许溢出的路由为(D) A 低呼损直达路由C 基干路由 D A和C 、 7. 电子邮件属于(B)B 消息型业务 8. ATM网中VC交换是(B)B VPI值、VCI值均改变 9. 下列关于ATM的描述中,不正确的是(C) C ATM网中,要进行逐段链路的差错控制和流 量控制 10. 二层交换机的特点是(A)交换速度快,控制功 能弱 : 11. 路由器可以实现协议转换的层次为(D) D 物理层、链路层及网络层 12. 下面所列接入网接口中,不属于用户网络接口的

北邮大学英语2阶段作业2

A . anyone else B . anything C . some of the things D . anything else A . more larger, all B . much larger, that C . very larger, both D . larger, those

A . flooded B . were flooded C . was flooded D . flood √4. A . being B . C . having D . having A . happened to see B . was happened to see C . happened to be seen D . was happened to be seen

A . rather B . enough C . quite a D . fairly A . the much best B . much the most best C . the very best D . very the best A . will put off

B . will be put off C . will be put D . has put off A . When B . What time C . How often D . How long A . take good care of B . has taken good care of C . took good care of D . are taken good care of

计算机网络期末试卷及答案

2006——2007学年第二学期 《计算机网络》期末考试试卷(A )参考答案及评分标准 (课程代码:020203019) 试卷审核人: 考试时间: 2007.6 注意事项:1. 本试卷适用于2004级计算机科学与技术专业学生使用。 2. 本试卷共9页,满分100分。答题时间120分钟。 班级: 姓名: 学号: 一、单项选择题(本大题共20道小题,每小题1分,共20分) 1、以下传输介质中,传输错误率最低的是 。( B ) (A)同轴电缆 (B)光缆 (C)微波 (D)双绞线 2、关于报文交换的描述,以下正确的是 。( D ) (A)报文交换必定是面向连接的 (B)分组交换网中采用的是报文交换 (C) 报文交换的传输效率往往较高 (D)报文交换采用存储转发技术 3、关于因特网的标准化工作,以下描述错误的是 。( C ) (A)解决了多种技术体制并存且互不兼容的状态 (B)所有的因特网标准都是以RFC 的形式在因特网上发表 (C)因特网草案属于RFC 文档 (D)因特网建议标准属于RFC 文档 4、关于带宽的描述,错误的是 。( A ) (A) 带宽就是数据的传输速率

(B) 带宽是指某个信号具有的频带宽度 (C) 信道的带宽越大,则信息的极限传输速率就越高 (D)某些情况下,可以用吞吐量来表示系统的带宽 5、在不同网络结点的对等层之间的通信需要以下的哪一项?( B ) (A) 模块接口 (B) 对等层协议 (C) 电信号 (D) 传输介质 6、关于面向连接的服务,以下描述正确的是。( D ) (A) 在数据交换结束后,可以不中止连接 (B) 对数据传输过程中,是否按序传输没有要求 (C) 与无连接服务相比,灵活方便,数据传输速度快 (D) 比较适合在一定时间内向同一目的地发送许多报文的情况 7、多路复用器主要功能是。( C ) (A) 执行数/模转换 (B) 减少主机的通信处理负荷 (C) 结合来自两条或更多条线路的传输 (D) 执行串行/并行转换 8、关于码分复用CDMA,描述错误的是。( C ) (A) 其频谱类似于白噪声 (B) 每一个用户可以在同样的时间进行通信 (C) 只要每个用户使用不同的码型,各用户之间就可以互不干扰 (D) 每一个用户可以使用同样的频带进行通信 9、关于EIA-232接口标准描述正确的是。( D ) (A) 是数据链路层标准 (B) 采用正逻辑,即逻辑1用高电平表示,逻辑0用低电平表示 (C) 使用37脚的插座 (D) 是DTE与DCE之间的接口标准 10、以下哪一项不是数据链路层的功能。( A ) (A) 数据加密 (B) 透明传输 (C) 流量控制 (D) 差错控制 11、在停止等待协议中,为了避免出现死锁而采用。( B ) (A) 数据帧编号 (B) 超时重传 (C) 确认帧编号

本科《计算机网络》期末考试试卷及答案

《计算机网络》试题 开卷()闭卷(√)考试时长:100分钟 一、单项选择题(15*2=30分) 每小题备选答案中,只有一个符合题意的正确答案。请将选定的答案,按答题卡的要求进行填涂。多选、错选、不选均不得分。 1、快速以太网的介质访问控制方法是()。 A.CSMA/CD B.令牌总线 C.令牌环 D.100VG-AnyLan 2、X.25网络是()。 A.分组交换网 B.专用线路网 C.线路交换网 D.局域网 3、Internet 的基本结构与技术起源于() A.DECnet B.ARPANET C.NOVELL D.UNIX 4、计算机网络中,所有的计算机都连接到一个中心节点上,一个网络节点需要传输数据,首先传输到中心节点上,然后由中心节点转发到目的节点,这种连接结构被称为() A.总线结构 B.环型结构 C.星型结构 D.网状结构 5、NOVELL NETWARE 是()操作系统。 A、网络 B、通用 C、实时 D、分时6、物理层上信息传输的基本单位称为 ( ) 。 A. 段 B. 位 C. 帧 D. 报文 7、网桥是在()上实现不同网络的互连设备。 A、数据链路层 B、网络层 C、对话层 D、物理层 8、ARP协议实现的功能是:() A、域名地址到IP地址的解析 B、IP地址到域名地址的解析 C、IP地址到物理地址的解析 D、物理地址到IP地址的解析 9、学校内的一个计算机网络系统,属于() A.PAN https://www.sodocs.net/doc/1a7390143.html,N C.MAN D.WAN 10、下列那项是局域网的特征() A、传输速率低 B、信息误码率高 C、分布在一个宽广的地理范围之内 D、提供给用户一个带宽高的访问环境 11、ATM采用信元作为数据传输的基本单位,它的长度为()。

网络教育本科统考大学英语

词汇与结构(5题,10分) 88题中必有3题(重点是前45题) 1. Professor Smith promised to look B my paper , that is ,to read it carefully before the defence(答辩) A after B over C on D into 史密斯教授已经答应帮我看一下我的论文,这就是说要在答辩前在仔细看一下。 2. Our house is about a mile from the railway station and there are not many houses A A in between B far apart C among them D from each other 我们家离火车站大概一英里左右,而且中间房子不多。 3. As the bus came round the corner , it ran A a big tree by the roadside . A into B on C over D up 汽车开到转角时撞到了路边的一棵大树 4. When Lily came home at . yesterday , her mother B dinner in the kitchen . A cooked B was cooking C cooks D has cooked 莉莉昨天五点钟回家时,她妈妈正在厨房里做晚饭。 5 Did you notice the guy C head looked like a big potato? A who B which C whose D whom 你注意到那个头看上去像个大土豆得家伙吗? 6. I don’t know the park ,but it’s A to be quite beautiful . A said B old C spoken D talked 我不了解这公园,但据说很美。 7 Mike is better than Peter B swimming. A for B at C on D in Mike比Peter更擅长游泳。 8 The young lady coming over to us A our English teacher; the way she walks tells us that ! A must be B can be C would be D could be 那个正朝我们走来的年轻女子肯定是我们的英语老师;她走路的样子就告诉我们了。 9 Had you come five minutes earlier, you B the train to Birmingham . But now you missed it . A should catch B would have caught C could catch D would catch 要是你早来五分钟,你就能赶上那班去伯明翰的火车了。但现在你错过了。 10 Eggs, though rich in nourishments, have C of fat A a large number of B the large number C a large amount D the large amount 尽管鸡蛋营养丰富,但它含有大量的脂肪。 11 The atmosphere C certain gases mixed together in definite proportions. A composes of B is made up C consists of D makes up of 大气是由多种气体以一定的比例混合而成的。 12 Neither John A his father was able to wake up early enough to catch the morning train. A nor B or C but D and 约翰和他父亲都没能早点起来赶上早班火车。 13 The girl is B of a film star A somebody B something C anybody D anyone 这个女孩有点象位电影明星 14 Jane’s dress is similar in design C her sister’s A like B with C to D as 简的裙子和她妹妹的在设计上很相似。 15 His salary as a driver is much high than D A a porter B is a porter C as a porter D that of a porter 他当司机的薪水比当搬运工的薪水要高的多。 16 It’s time we D the lecture because everybody has arrived A will start B shall start C start D started 大家都到了,我们该开始讲课了。 17 C these honors he received a sum of money A Except B But C Besides D Outsides 除了这些荣誉,他还得到了一笔钱。 18 Would you let A to the park with my classmate , Mum? A me go B me going C I go D I going 妈妈,让我和同学一起去公园好吗? 19 Therefore , other things C equal, the member of workers that employers want decreases A is B are C being D having 因此,在其他方面都平等,但雇主需要的工人减少了。 20 I have been looking forward to D from my parents A hear B being heard C be heard D hearing 我一直盼望着收到父母的来信。 21 The manager will not D us to use his car A have B let C agree D allow 经理不准我们用他的车。 22 D her and then try to copy what she does A Mind B See C Start at D Watch 留心观察,然后照她的样子做。 23 Will you A me a favor ,please? A do B make C bring D give 你愿意帮我个忙吗? 24 It’s bad A for you to smoke in the public places where smoking is not allowed. A behavior B action C manner D movement 对你来说在禁止吸烟的公共场所吸烟是一个坏的举止行为。 25 It’s a good idea. But who’s going to A the plan A carry out B get through C take in D set aside 这是个好主意。但谁去执行这个计划呢? 26 Two days is not enough for him to finish the work. He needs D day A other B the other C the third D a third 两天时间他完成不了这项工作,还学要一天 27 The red flower goes from one to C in the class A the other B others C another D other 教室里,这朵红花从一个传到另一个。 28 The computer system A suddenly while he was searching for information on the internet. A broke down B broke out C broke up D broke in 在他上网查找资料的时候计算机系统突然瘫痪。 29 There’s lots of fruit D the tree . Our little cat is also in the tree. A in B at C under D on 树上长了许多果实。我们的小猫也在树上。 30 How can he B if he is not ? A listen ; hearing B hear ; listening C be listening ; heard D be hearing; listened to 如果他不听, 怎么能听到呢? 31 The students were all entertained in a Mexican restaurant, at Professor Brian’s C . A money B pay C expense D loss 布朗教授在一家墨西哥餐厅请学生吃饭。 32 Tom ,what did you do with my documents? I have never seen such a B and disorder. A mass B mess C guess D bus 汤姆,你拿你的文件在干什么?我从来没见到这么乱过。 33 If she wants to stay thin , she must make a A in her diet. A change B turn C run D go 如果她想保持身材(瘦),她必须在她的饮食中有所变化。 34 A the war of Independence, the United States was an English colony A Before B At C In D Between 在独立战争之前,美国是英国的殖民地。 35 No matter D the little sisters managed to round the sheep up and drive them back home safely A it was snowing hard B hard it was snowing C how it was snowing hard D how hard it was snowing 不管雪下的多大,两个小姐妹还是安全地把羊拢起来赶回了家。

相关主题