问题 单项选择题

关于页式管理,下面叙述中错误的是______。

A) 页的大小是固定的且由系统决定
B) 在页式内存管理方式下,一个程序不必连续存放
C) 页式内存管理不会产生碎片
D) 在页式内存管理系统中,指令所给的地址为两部分:逻辑页号和页内地址

答案

参考答案:C

解析:页式内存管理会产生内碎片,但每个内碎片不超过页框的大小。页式内存管理的优点是不会产生外碎片。

完形填空

This is a true story . One evening a woman was   36    home when she saw a truck close behind her . She drove more quickly to be far away from the truck ,   37    when she sped up (加速),the truck did ,too. The   38   she drove , the faster the truck drove . The woman felt afraid , so she drove onto a main street , hoping to   39  the truck in a traffic . But the truck jumped a   40  light and went on running after her .

Finally the woman drove her car into a service station ,and got out of her car ,shouting for   41  .  The truck driver didn' d leave , instead he went out of his car .  He   42   the back door , and pulled out a man hidden (藏)in the back seat . The woman was running from the wrong person .the woman was   43  at last .

From the place where the woman stopped her car , the driver   44 a criminal (罪犯)in the woman' s car . The driver drove after her not to   45   her but to help her .

小题1:A. running         B. walking       C. driving.

小题2:A. but             B. though        C.  or.

小题3:A. bigger          B. faster         C. happier.

小题4:A. lose            B. look          C. come

小题5:A. black           B. red           C. green.

小题6:A. advice          B. suggestion    C. help

小题7:A. cleaned         B. opened       C. bought.

小题8:A. safe            B. healthy        C. free

小题9:A. forgot          B. found          C. put.

小题10:A. harm          B. visit.        C. save.

单项选择题