问题 单项选择题

在操作系统文件管理中,通常采用()来组织和管理外存中的信息。

A.字处理程序

B.设备驱动程序

C.文件目录

D.语言翻译程序

答案

参考答案:C

解析:

本题考查操作系统文件管理方面的基础知识。

存放在磁盘空间上的各类文件,必须要进行编目,操作系统才能实现文件的管理,这与图书馆中的藏书需要编目录、一本书需要分章节是一个道理。用户总是希望能“按名存取”文件中的信息。为此,文件系统必须为每一个文件建立目录项,即为每个文件设置用于描述和控制文件的数据结构,记载该文件的基本信息,如文件名、文件存放的位置、文件的物理结构等。这个数据结构称为文件控制块(FCB),文件控制块的有序集合称为文件目录。

阅读理解

阅读理解。

     There are about fifteen hundred languages in the world. But only a few of them are very important.

English is one of them. Many, many people use it, not only in England and the USA, but also in other

parts of the world. About 200,000,000 people speak it as their own language. It is difficult to say how

many people are learning it as a foreign language. Many millions of people are trying to do so. Is it easy

or difficult to learn English? Different people may have different answers. Have you ever noticed ads (广告) of this kind in the newspapers or magazines? "Learn English in six weeks, or give your money back…" "Easy and funny…"Our records and tapes help you master English in a month". Of course, it never

happened quite like that.

     The only language that seems easy to learn is the mother tongue. We should remember that we all

learned our own language well when we were children. If we could learn English in the same way, it

would not seem so difficult. Think of what a small child does. He listens to what people say. He tries

what he hears.

     So it is hard to say that learning English is easy. We must do a lot of practice. And practice needs

great efforts and takes much time. Good teachers, record, tapes, books, and dictionaries will be helpful,

but they cannot do the student's work for him.

1. How many languages are very important in the world?

A. A few  

B. Few    

C. About 1500  

D. Many

2. If we want to learn English well, what shall we do?

A. We should study it without any help.

B. We must do a lot of practice.

C. We need to get much money back.

D. We must live in England or America.

3. How does the writer like the ads in the newspapers or magazines?

A. He thinks the ads very expensive.

B. He thinks the ads are true.

C. It never happened quite like what the ads said.

D. He believes"Learn English in six weeks, or give your money back".

4. Which language is easy to learn?

A. English  

B. Chinese  

C. Japanese  

D. The mother language

5. Which countries use English as the mother tongue?

A. China and France    

B. Japan and Italy

C. England the America  

D. Germany and France

单项选择题