完型填空(本大题共 10 小题，每小题 1 分，共 10 分)从选项中选择一个最适合短文的选项，错选、多选或未选均无分。
Jogging is becoming one of the ___21___ growing activities in the nation. More people are starting jog each year. This, however, is a recent occurrence. It was not long ago __22____ joggers were rare sight. Some people thought that they looked quite strange. As __23____ people began jogging the sight of them became more common. There are many reasons ___24___ a person to take up jogging. First, it is a good form of exercise. This is __25____ it involves the use of many parts of the body. The exercising of the heart is of great benefit. This is one of the most important parts of the human body. If the heart does not get the needed exercise, serious problems can occur. ___26___ reason for jogging is for enjoyment. ___27___ being good for people, it can also be very much fun. Part of the fun of jogging comes from the opportunity it provides for meeting other people who enjoy it. One ___28___ that should be considered ___29___ a person takes up jogging as a form of exercise of enjoyment is that it is not for everyone. People should first check 30 their doctors and be prepared to find another form of exercise if jogging is not recommended.
21. A. fastest B. quickest C. most D. best
22. A. when B. while C. that D. as
23. A. many B. those C. more D. the
24. A. of B. with C. for D. in
25. A. that B. why C. reasonable D. because
26. A. A B. Other C. The other D. Another
27. A. Except B. Except for C. Besides D. Regardless of
28. A. matter B. event C. thing D. occurrences
29. A. of B. that C. what D. when
30. A. out B. over C. on D. with
创建索引的目的主要是 _________。
Cache行和主存块之间的映射方式有_____、_____和_____三种。
在计算机通信中，_______是指通信双方必须遵循的控制交换的规则的集合。
MIPS指令流水线数据通路通常包括取指_____、译码、_____、_____和五段流水线。
安全套接字层的英文缩写是_________。
从职能上分，管理信息系统用户可分为 __________ 管理人员、系统操作人员和系统维护人员。
完成数据链路层间问的连接，能够将多个网段连接起来的设备为________。
放大电路可分为四种类型：_______、_______、_______和_______。