问题 单项选择题

下面关于存储管理任务的叙述中,不正确的是( )。

A.内存管理是给每个应用程序所必需的内存,而又不占用其他应用程序的内存

B.内存管理是管理硬盘和其他大容量存储设备中的文件

C.当某些内存不够用时,可以从硬盘的空闲空间生成虚拟内存以供使用

D.采取某些步骤以阻止应用程序访问不属于它的内存

答案

参考答案:B

解析: 选项A),内存管理是给每个应用程序所必需的内存,而又不占用其他应用程序的内存;选项B),操作系统的内存管理是管理内存资源,文件系统负责管理硬盘和其他大容量存储设备中的文件;选项C),当某些内存不够用时,虚拟内存管理就会介入来弥补不足;选项D),内存管理的另个任务足采取某些步骤以阻止应用程序访问不属于它的内存。

单项选择题
阅读理解

阅读理解。

                                                                      You can make the

                                                                     difference between

                                                                       this…and this 

     This summer, join the International Conservation Scouts on a fun-filled holiday with a difference. Year after

year, young people from all around the world get together at one of our sixteen conservation (环境保护) camp. Their shared aim? To help protect the countryside and its wildlife.

      Many animals and plants are in danger of disappearing forever. The dormouse, a kind of mouse, for

example, needs woodland plants for food and trees to stay in. Its habitat (栖息地) is being destroyed by man

and it needs our help to survive.

     On a conservation camp holiday you will learn all about nature and how to protect it. Our trained leaders

will accompany you and tell you everything you need to know. Because of this you don' t need any experience,

just energy and enthusiasm. You will explore the countryside and work to ensure the survival of hundreds of

animals and plants and still have plenty of time to enjoy the camp's excellent sports facilities and organized

nature paths through beautiful scenery.

     The International Conservation Scouts is a worldwide organization, so there must be a camp near you, You

can spend a splendid holiday at any of the camps for as little as f 60 including accommodation and food.

     For more information send for a free conservation camps handbook today.

                                                          International Conservation

                                                         Scouts Stanton St John

                                                           Oxford shire OX7 1TL

                                              THEKEY TO SAVING WILDUFE IS TO

                                         FROTECT NATURAL HABITATS: YOUR WORK

                                                    WILL MAKE A DIFFERCNCE

1. The main purpose of this passage is ______.

A. to offer young people a fun-filled holiday

B. to attract young people to attend a conservation camp

C. to persuade people into exploring the countryside

D. to raise funds for the International Conservation Scouts

2. According to the passage, you can ______ at the conservation camps.

A. experiment on the dormouse

B. practise your favorite hobbies

C. enrich your knowledge of wildlife

D. have free accommodation and food

3. Judging from the writing style of the passage, it is ______.

A. a piece of advertisement

B. a science report

C. a passage for professional reading

D. a passage for arguing an opinion