问题 单项选择题

在下列各选项中,具有连接范围窄、用户数少、配置容易、连接速率高等特点的网络是______。

A.局域网
B.城域网
C.广域网
D.互联网

答案

参考答案:A

解析:局域网(LAN,Local Area Network)是一个覆盖范围较小、信息传输速率高、结构简单、布局灵活、可靠性好、便于扩展的网络。
城域网(MAN,Metropolitan Area Network)是一种城市区间网络,从范围来看它介于局域网和广域网之间,但它采用的是局域网的技术,它的目的是在一个较大的范围内提供信息数据的共享服务。覆盖范围一般在几公里到几十公里。
广域网(WAN,Wide Area Network)是一个覆盖范围更广的网络,其作用范围可以覆盖一个地区、国家,甚至可以横跨几个洲。如国际互联网Internet就是最大的一个广域网。

多项选择题
完形填空

II. 完形填空

阅读下面短文,掌握其大意,然后从36-55各题所给的A、B、C、D四个选项中,选出最佳选项。

The purpose of a letter of application (求职) is to help you to "sell" yourself. It should state   16  the job you want, and should tell what your abilities are and what you have   17   . It should be simple, human, personal and brief without  18   out any necessary facts.

In writing a letter of application, keep in   19  that things a possible employer is most   20  to want to know about are your qualification, your achievements and your aims. The opening paragraph is perhaps the most important part.   21  the first few sentences fail to  22   the reader's attention, the rest of the letter may not be   23  at all. Try to key your opening remarks to the needs or interests of the employer, not  24  your own needs or desires. For example, instead of beginning with "I saw your  25  in today's newspaper". You might say "I have made a careful  26  of your advertising during the past six months" or "I have made a survey in my neighborhood to find out how many housewives   27  your product and why they like it".

Try to  28  generalities (笼统) . Be clear about the kind of job for which you are now   29 . College graduates looking for their first positions often ask "What can I  30  in a letter? Employers want experience---which, naturally, no 31   has. The answer is that everything you have ever done is  32 .

It is important to write a good strong closing remark for your letter.  33  a specific request for an interview or give the possible employer something definite to do or expect. An excellent  34  is to enclose (内附) a stamped, self-addressed envelope with your letter. That makes it  35   for a possible employer to get in touch with you.

16. A. clearly          B. carefully         C. obviously             D. easily

17. A. found           B. done            C. known             D. heard

18. A. sending          B. taking            C. leaving              D. picking

19. A. brain            B. sight            C. order                D. mind

20. A. probable          B. possible         C. likely                D. able

21. A. While           B. Although        C. As                  D. If

22. A. pay              B. win             C. show                D. fix

23. A. kept             B. continued        C. written              D. read

24. A. to              B. for              C. into                  D. from

25. A. advertisement      B. report         C. article               D. introduction

26. A. watch           B. search            C. study                D. discussion

27. A. change          B. make            C. sell                   D. use

28. A. avoid            B. remember        C. protect              D. gain

29. A. losing           B. applying         C. preparing             D. fitting

30. A. offer            B. supply            C. mean                D. provide

31 .A. worker          B. beginner         C. owner               D. manager

32. A. success          B. development      C. practice              D. experience

33. A .Make            B. Ask             C. State                 D. Get

34. A. result            B. decision          C. promise                   D. idea

35. A. happier          B. easier                 C. heaper              D. safer