问题 单项选择题

以下关于网络操作系统基本任务的描述中,哪个是错误的

A.屏蔽本地资源与网络资源的差异性

B.为用户提供各种基本网络服务功能

C.提供各种防攻击安全服务

D.完成网络共享系统资源的管理

答案

参考答案:C

解析:网络操作系统基本任务是屏蔽本地资源与网络资源的差异,为用户提供各种基本网络服务功能,完成网络共享资源的管理,并提 供网络资源系统的安全性服务,但并不能提供各种预防攻击安全的服务。

完形填空

第二节:完形填空(共20小题;每小题1.5分,满分30分)

阅读下面短文,从短文后所给各题的第四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

One student took a box of chicken to class,another carried on a cell phone   31  and still another whistled loudly every time the   32  turned his back.

Reform school? No. College.

More and more, professors say, they are coming across   33   students in their classrooms. Many of today’s young scholars (学者) arrive late, leave  34  , talk loud or take care of personal   35  such as paying bills during class.

Why are the students behaving badly?

“Because they can,” said a student of University of North Texas. “A lot of the time, the professors let them get   36  with it.”

Some educators say it is time to bring politeness back to their classrooms—and even   37  

taking some of the blame for bad behavior. They say that rude students are by no means the majority but that one of them can ruin an entire   38 .

People are   39  when they learn that impolite behavior is becoming more and more common in   40  education, says Dr Gerald Amanda, a counselor at City College of San Francisco. They   41  some high school students to misbehave but think those who get to   42  will behave more politely.

Dr Amanda believes that society in   43  has become more tolerant (容忍的) of rude behavior and   44  people in power, including professors, no longer   45  standards for   46 . That leads to a growing imprudence (轻率行为)   47  some college students. “There’s a great   48  of bad behavior in the world around them, and young people see it and   49  disrespect,” said Dr Amanda,   50  that sometimes students “have no idea that they are being rude.”

31.A. line                                   B. conversation                 C. message                       D. picture

32.A. professor                      B. student                          C. president                        D. classmate

33.A. hardworking              B. cheating                      C. rude                                 D. selfish

34.A. late                               B. early                             C. noisily                              D. quietly

35.A. feeling                            B. interest                         C. computer                       D. business

36.A. away                            B. down                              C. along                               D. back

37.A. enjoy                            B. hate                                C. start                                D. avoid

38.A. school                          B. company                       C. society                                      D. class

39.A. delighted                       B. surprised                       C. interested                     D. encouraged

40.A. better                                      B. more                            C. higher                            D. younger

41.A. expect                            B. hope                             C. forbid                             D. wish

42.A. work                             B. college                           C. 1earning                         D. knowledge

43.A. all                                    B. time                           C. charge                             D. general

44.A. why                                  B. how                             C. whether                        D. that

45.A. change                           B. break                              C. set                                    D. reach

46.A. teaching                        B. politeness                     C. thinking                           D. progress

47.A. about                                       B. for                                   C. behind                             D. among

48.A. deal                                B. number                          C. many                               D. sum

49.A. prepare                         B. grow                                C. develop                           D. improve

50.A. speaking                     B. adding                            C. warning                          D. wishing

多项选择题