Unit 3
Text 1
1.Match each of the words or phrases with their Chinese meaning.
disk 磁盘
modem 调制解调器
driver 驱动器
printer 打印机
display 显示器
mouse 鼠标
keyboard 键盘
computer 计算机
2.Fill a correct word learned in this text in each of the blanks.
The display of the computer is also called______.
Screen
The function of a ____ is to print the information or data on a piece of paper.
printer
The keyboard is one of the _____devices.
input
A modem plays an important role when you want to use the ______.
internet
Translation,
我是一个操作员。
I am a computer programmer.
什么是电子计算机？
What is a electronic computer?
我有一个键盘。
I have a keyboard
It costs me 4000 Yuan to buy a computer.
买一台电脑需要花费我4000元人民币。
I am now finding a file that was deleted by mistake.
我正在找一个不小心被我误删的文件。
There was some problems with my mouse,Maybe it’s not clean.
我的鼠标器有点问题，也许是它不干净了。
Reading material
Read the above passages carefully and answer the questions.
According to passage A,why can’t A find his file?
Because he can not remember where his file was saved.
To find A’s file,what is necessary?
The name of the file.
How can A find his file that he can’t find?
A can use the,find” function on the,begin” menu.
According to passage B,what is energy saver mode?
It is a mode in which it turns off the monitor if the processor hasn’t received any input for a certain period of time.
Text 2
Fill a correct word in each of the blanks.
A computer system includes ________ and software.
hardware
Software refers to ________.
programs
A mouse is a(n) _______device.
input
A program consists of many ________.
instructions
Disk Operating System is also called ________by computer users.
DOS
A keyboard is mainly made up of ________ functional groups.
three
There are also three important special functional keys on the keyboard,They are _____,______,_______.
Escape,Control,Alternate
Choose the best answer for each of the blanks.
Password (密码) is a(n) 1 series of characters that enables a user 2 a file,computer or program,On multi-user systems,3 user must enter his or her password 4 the computer will respond to commands,The password helps ensure that unauthorized (未授权的) users do not access the computer,In addition,data files and programs may require a password.
Ideally,the password should be something 5 could guess,In practice,most people choose a password that is 6 to remember,such as their name or their initials (首字母),This is one reason it is relatively easy to break 7 most computer system.
A,obvious
B,secret
C,important
D,easy
A,access
B,accessing
C,accessed
D,to access
A,each
B,all
C,some
D,any
A,after
B,when
C,while
D,before
A,everyone
B,everybody
C,nobody
D,most people
A,hard
B,easy
C,ease
D,difficult
A,into
B,up
C,to
D,in
答案：BAADCBA
Reading material
After reading these passages,answer the following questions.
How much RAM should you have at least if you want to run Windows smoothly?
256MB
What is the result if your RAM is too little?
The computer becomes very slow.
In Passage B,how can A speed up his internet connection?
Change his modem.
In Passage C,why can’t A’s mouse work properly?
It is a little dirty.
Text three
Match each of the words with their correct Chinese meanings.
mainframe 大型机
desktop 台式电脑
command 命令
workstation 工作站
synonym 同义词
multi-user 多用户
parallel 平行的
multi-functional 多功能的
laptop 膝上型电脑
Decide whether the following statements are True or False.
A computer is a multi-functional electronic data processing machine and is made up of electronic components,(T)
The computer can do nothing without a program,(T)
A microcomputer,also called personal computer,is a computer designed for an individual,(T)
According to computers’ power and size,we have desktop,laptop and handheld PCs.( F )
In its more general usage,a personal computer is a computer designed for using by one person at a time,(F )
Computers can be classified into microcomputer,mainframe and supercomputer by its program,( F )
Workstation is a multi-user computer capable of supporting many hundreds or thousands of users simultaneously,(T)
Fill in the blanks with suitable words.
____ are electronic machines that is made up of electronic components and can be programmed to do a number of different tasks.
computers
Information can be ____ into the computer through input device by people.
input
_______ are designed to process very complex scientific applications.
supercomputers
The computer must be given ________,which tell it how to handle information or data.
programs
Data flow from the computer as _________.
output
Reading material
Choose the best answer for each of the blanks according to the passage.
Small as it is,a personal computer can perform the same program instructions as ( ).
A,larger computers B,human beings C,typewriter D,printers
Hardware components are used for the purpose of ( ).
A,input B,output C,central processing D,all of the above
The largest and fastest computers are ( ).
A,mainframe computers B,supercomputers C,hand-held PCs D,workstations
All computers can perform basic machine operations under the control of ( ).
A,instructions B,commands C,operations D,programs
The larger the system of the computer,the greater its ( ).
A,processing speed B,storage capacity C,both A and B D,neither A nor B
1-5 ADBDB
Text four
Decide whether the following statements are True or False.
The idea of binary arithmetic,random access and stored programs are still in use in today,( )T
The introduction of ENIAC-vacuum tubes meant the start of the second generation of computers,( )F
Portable radios signaled the start of the second generation of computer,( )F
The integrated circuit was an important technological breakthrough in electronics for the third generation of computer,( )T
The fourth generation began with the introduction of LSI in the early 1970s,( )T
The microprocessor is also considered as the most important symbol for the fourth generation,( )T
1-6 TFFTTT
Match the words or phrases with their Chinese meanings.
binary 二进制
transistor 晶体管
integrated circuit 集成电路
silicon chip 硅片
arithmetic 算术
budget 预算
random 随机的
vacuum tube 真空管
Fill a correct word or a phrase in each of the blanks,
The development of computer has experienced four ______ till now.
generations
________ was the main feature of the first generation of computer。
ENIAC-vacuum tubes
To those in the data processing business,transistor signaled the start of the ______ generation of computer.
second
The third generation of computer was characterized by the _______ or IC (集成电路),
integrated circuits
One of the most significant contributions of the fourth generation of computer is the _____.
microprocessor
Reading material
Read the passages carefully and answer the questions below.
What is the advantage if you have a UPS for your computer?
You can still keep and save the data or information even if the power is off.
How long can a UPS last if the electricity power is off?
5-20 minutes.
What kind of equipment should be plugged into a UPS?
Your most important equipments.
