问题 单项选择题

下面关于操作系统的叙述中,正确的是 ______。

A.操作系统是计算机软件系统中的核心软件

B.操作系统属于应用软件

C.Windows是PC唯一的操作系统

D.操作系统的五大功能是:启动、打印、显示、文件存取和关机

答案

参考答案:A

解析: 操作系统(Operating System,OS)是一管理计算机硬件与软件资源的程序,同时也是计算机系统的内核与基石。操作系统身负诸如管理与配置内存、决定系统资源供需的优先次序、控制输入与输出设备、操作网络与管理文件系统等基本事务。操作系统是管理计算机系统的全部硬件资源包括软件资源及数据资源;控制程序运行;改善人机界面;为其他应用软件提供支持等。 操作系统主要包括五个管理功能:处理机管理、存储管理、设备管理、文件管理和作业管理。 以前常用的操作系统有DOS,Windows 98、Windows NT、Windows 2000、现在常用的操作系统有Windows XP、 Windows Vista、Linux和UNIX。 计算机软件系统主要包括系统软件和应用软件。系统软件是由计算机设计者提供的,为高效使用和管理计算机的软件,主要包括操作系统、语言处理软件、数据库管理系统、网络通信管理程序和其他常用服务程序。应用软件是指为解决计算机应用中的实际问题而编制的软件,它是针对某一具体应用领域的、面向最终用户的软件,如财务软件、文字处理软件、辅助设计软件、图形软件等。

单项选择题 A1型题
阅读理解

The number of speakers of English in Shakespeare's time is estimated to have been about five million. Today it is estimated that some 260 million people speak it as a native language, mainly in the United States, Canada, Great Britain, Ireland, South Africa, Australia and New Zealand. In addition to the standard varieties of English found in these areas, there are a great many regional and social varieties of the language as well as various levels of usage that are employed both in its spoken and written forms.

In fact, it is impossible to estimate the number of people in the world who have acquired an adequate working knowledge of English in addition to their own languages. The purpose for English learning and the situations in which such learning takes place are so varied that it is difficult to explain and still more difficult to judge what forms an adequate working knowledge for each situation.

The main reason for the widespread demand for English is its present­day importance as a world language. Besides serving the indefinite needs of its native speakers, English is a language in which some of important works in science, technology, and other fields are being produced, and not always by native speakers. It is widely used for such purposes as meteorological and airport communications, international conferences, and the spread of information over the radio and television networks of many nations. It is a language of wider communication for a number of developing countries, especially former British colonies. Many of these countries have multilingual populations and need a language for internal communication in such matters as government, commerce, industry, law and education as well as for international communication and for entrance to the scientific and technological developments in the West.

小题1:Which of the following statements is NOT true?

A.Some 260 million people in the world have an adequate working knowledge of English.

B.There are some 260 million native speakers of English in the world.

C.It is almost impossible to estimate the number of people with an adequate working knowledge of English.

D.People learn English for a variety of reasons.小题2:According to the passage, what is the main reason for the widespread use of English?

A.It was popular during Shakespeare's time.

B.It is used in former British colonies.

C.It serves the needs of its native speakers.

D.It is a world language that is used for international communication.小题3:What forms an adequate working knowledge of English?

A.The ability to read a newspaper.

B.It is difficult to judge because it differs for each situation.

C.Being a multilingual.

D.Being a native speaker.小题4:What type of developing countries would be most likely to use English?

A.Those geographically close to the United States.

B.Those interested in the culture of the United States.

C.Former colonies of Great Britain.

D.Countries where international conferences are held.