All people, whether they be rich or poor, strong or weak, privileged or deprived，are interdependent, and _______ the common task of seeking to achieve mankinds full potential

计算机系统中的硬件系统包括主机和外设。下面关于主机正确的说法是______。

Many boys enjoy _______ football, basketball or baseball

－ What does the sign over there read － “No person ________ smoke or carry a lighted cigarette, cigar or pipe in this area”

Which do you think is ________, health or wealth？

一台完整的计算机系统由______组成。

29．__________ when you are on the bus or bike．

数据库系统是指在计算机系统中引入数据庠后的软硬件系统构成，通常可以分为______。

组成计算机硬件系统的基本部分是______。

Duty is an act or a course of action that people __________you to take by social customs, law or religion.

多媒体计算机系统由_______组成。

下列选项中不属于计算机硬件系统五大组成部分的是______。