问题 问答题

简述微型计算机的主要技术指标。

答案

参考答案:微型计算机的主要技术指标有:
(1)字长:指计算机能够直接处理的二进制数据的位数。单位为位(BIT)。
(2)主频:指计算机主时钟在1秒钟内发出的脉冲数,在很大程度上决定了计算机的运算速度。
(3)内存容量:是标志计算机处理信息能力强弱的一项技术指标。单位为字节(BYTE);1BYTE=8BIT,1KB=1024B,1MB=1024KB。
(4)外存容量:一般指软盘、硬盘、光盘等的容量。

阅读理解

阅读下列短文,并做每篇短文后面的题。从A、B、C、D四个选项中,选出能回答所提问题或能完成所给句子的最佳选项,并在答翘卡上将该项涂黑。

Sunshine For All

The Beijing Sunshine Secondary School students are holding a charity show at the school hall of Beijing Sunshine Secondary School, Sunny Street, Sunshine Town.

Date: 29 April

Time: 7:30 p. m.一9:00 p. m.

We hope to raise money to help poor children go to school.

Ticket price:  $20

Donations are welcome.

Programme:

    7:30 p. m. Introduction

    7:40 p. m. Songs

    8:00 p. m. Break

    8:15 p. m. Speech

    8:30 p. m. Drama

    9:00 p. m. End of the show

Project Hope is an organization that raises money to build schools and buy books for poor students.

We would like to thank the following for their help and support:

? The teachers at Beijing Sunshine Secondary School

? The Star Shopping Mall for the costumes

? Sunshine Advertisement Company for the posters

41. Where will the charity show be held?

A. In the classroom.

B. In the meeting room.

C. In the shopping mall.

D. At the school hall.

42. When will the charity show be held?

A. 7:30 p. m.一9:00 p. m., 29 April.

B. 7:30 a. m.一9: 00 a. m., 29 April.

C. 7:30 a. m.一9: 00 p. m. 29 May.

D. 7:30 p. m.一9: 00 p. m. 29 May.

43. Why do they want to raise money?

    A. To build schools.

    B. To help poor children go to school.

    C. To buy books for poor students.

    D. To hold the charity show

44. What can you do at 8:00 p. m.?

    A. Watch a drama.                         B. Enjoy songs.

    C. Have a rest.                            D. Listen to a speech.

45. Whom do the students want to thank?

    A. Sunshine Advertisement Company for the posters.

    B. The Star Shopping Mall for the costumes.

    C. The teacher at Beijing Sunshine Secondary School.

    D. All of the above.

单项选择题