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Answer the following questions with information from the passage.
1）Which component is regarded as the brain of the computer? Why?
2）What’s the use of input devices? What’s the use of output devices? What is the distinctness between them?
3）How does the RAM work as main memory of computer during computer running?
4）What do you know about the operating system Windows 10?
Complete the following sentences with the words and phrases from the passage.
1）To put it simply，a computer is a machine that carries out______.
2）Generally if the mouse has two______the left one is used to ______objects and text and the right one is used to______menus.
3）The_______(ODD)is a disk drive for computer ____________and distributing information that uses laser light or electromagnetic waves within or near the visible light spectrum as part of the process of______or ___data to or from optical disks.
4）All the data and________stored in the computer are represented by strings of these “______”and“off ”switches.
Translate the following sentences into English.
1）处理器和算术逻辑单元使用大量的内存。
2）显示器有多种尺寸和类型，从简单的单色（一个颜色）的屏幕到全色彩的屏幕都有。
3）硬盘是使用涂有磁性材料的快速旋转磁盘来存取数字信息的存储设备。
4）全世界范围内硬盘的发货量在 2013 年达到了 330 亿美元。
The passage you have read is about computer components. The following are some useful expressions and explanations for computer hardware. Read them carefully and find the items equivalent to those given in English in the table below. Then write the corresponding letter in the brackets.
1）a storage device where your data and information are permanently stored on computer and normally where the operating system and applications is installed
2）an output device that displays the text and graphics generated by the computer
3）the circuit board housed in a personal computer supplying the components of computer
4）a chassis that houses the core components of a computer
5）an output device that prints text and pictures created by the user on the computer
6）a pointing device that allows you to select and manipulate objects you see on the screen
7）the main memory for the computer where the computer stores the data and information during its running
