Bài tập Tiếng Anh chuyên ngành Công nghệ thông tin

HỌC VIỆN CÔNG NGHỆ BƯU CHÍNH VIỄN THÔNG 
BÀI TẬP 
TIẾNG ANH 
CHUYÊN NGÀNH CNTT 
(Dùng cho sinh viên hệ đào tạo đại học từ xa) 
Lưu hành nội bộ 
HÀ NỘI - 2006 
HỌC VIỆN CÔNG NGHỆ BƯU CHÍNH VIỄN THÔNG 
BÀI TẬP 
TIẾNG ANH CHUYÊN NGÀNH CNTT 
 Biên soạn : THS. LÊ THỊ HỒNG HẠNH 
 CN. NGUYỄN THỊ HUỆ 
Câu hỏi 
 3
CÂU HỎI 
Câu 1: Hãy đọc kỹ đoạn văn sau và trả lời câu hỏi 
Throughout the ages people have sought to understand the world around them and to 
explain it in a systematic way. A system is simply a group of elements which work together to 
achieve a purpose. Systems can be very large, such as the system of courts and laws we call our 
'legal system', or very small, such as the system involved in cleaning your teeth. Systems can 
occur in nature or be designed by people. The water cycle (described below) is an example of a 
natural system. Banking systems and computer systems are examples of systems designed by 
people. 
Input-process-output 
Processing systems accomplish a task: they take one or more inputs and carry out a process 
to produce one or more outputs. An input is something put into the system, a process is a series of' 
actions or changes carried out by the system, while an output is something taken from the system. 
All systems can be represented by the following input-process-output (IPO) diagram. 
The shaded area in the diagram represents the system. The letter 'I' stands for input and the 
letter '0' stands for output. The input into this system is an output from another system and the 
output from this system is an input into another system. 
To develop these ideas further we will consider three systems: coffee making the water 
cycle and the shop. 
THE WATER CYCLE 
Water circulates between the earth and the atmosphere; this is an example of a system 
occurring in nature. It is driven by. the heat of the sun which causes evaporation from bodies of 
water and transpiration from plants. The water vapour in the atmosphere forms clouds under 
certain conditions. When these clouds have more water vapour than they can hold, precipitation 
occurs and the water is returned back to the earth as rain;' hail, dew or snow. This process of 
moving water from the earth into the atmosphere and back to the earth is called the water cycle. 
The inputs are the heat from the sun, and water from oceans, lakes, rivers and plants. The 
process consists of actions such as evaporation, transpiration and precipitation. The output is the 
circulation of the water between the earth and its atmosphere. 
THE SHOP 
A shop is a retail system designed by people; its purpose is to allow customers to purchase 
goods or items. The inputs are the goods to be sold. The process consists of actions such as 
Câu hỏi 
 4
receiving goods from the warehouse, packing the goods into the shop and selling the goods at the 
counter. The output is the goods sold to the customers. 
1. Write down whether the following statements are true or false. 
a. A system is a group of elements which work together to achieve a purpose. 
b. An input is something taken from the system. 
c. Systems have only recently been studied. 
d. A process involves any actions or changes carried out by the system. 
e. A shop is an example of a. system designed by people. 
f. Systems cannot be represented by diagrams. 
g. An output is something taken from the system. 
h. All systems contain an input, a process and an output. 
i. Coffee making cannot be considered as a system. 
j. The water cycle is an example of a system occurring in nature. 
2. Making a piece of buttered toast is a simple system. 
a What are its input, process and output? 
b Draw an IPO diagram to represent this system. 
Câu hỏi 
 5
3. Planting a tree bought from the nursery can be considered a system. 
a What are its input, process and output? 
b Draw an IPO diagram to represent this system. 
4. A recorded music system involves using a record, cassette or compact disc to 
 listen to music. 
 a What are its input, process and output? 
 b Draw an IPO diagram to represent this system. 
5. Every action we take can be considered as a system. Do you agree? 
Câu 2: Refinement and synthesis 
Refining a system means analysing it in more detail and breaking it down into smaller 
components. Each part of the process may be considered either as a system in itself, or as a sub-
system. A sub-system is a small system which is part of a larger system. It also contains a group of 
elements which work together to achieve a purpose. 
Synthesis is the reverse process; it involves combining simple sub-systems into a larger, more 
complex system. 
The shaded area in the above diagram represents a large system which has been broken 
down into two smaller systems, or sub-systems. 
THE WATER CYCLE 
A refinement of the water cycle system could consider each part of the process - 
evaporation, transpiration and precipitation - as sub-systems. 
. Evaporation is a sub-system which converts water into water vapour. The inputs are the 
heat of the sun and water in large' bodies such as oceans, lakes and rivers. The process involves 
changing the water into vapour.The output is the water vapour. 
. Transpiration is a sub-system which converts moisture in plants and other bodies into 
water vapour. The inputs are the heat of the sun, and plants and other bodies. The process involves 
changing the moisture from plants into vapour. The output is the water vapour. . 
. Precipitation is a sub-system which converts water vapour into water in the form of rain, 
hail, dew and snow. The input is the water vapour in the form of clouds. The process involves 
changing the water vapour into water. The output is rain, hail, dew and snow. 
Câu hỏi 
 6
Refining the water cycle into these three sub-systems is only one way of understanding it. 
The water cycle is a very complex system and contains many other processes which could ha ... âu 51: Documentation .................................................................................................... 70 
Câu 52: Programming....................................................................................................... 71 
Câu 53: Programming languages...................................................................................... 73 
Câu 54: BASIC and Pascal ............................................................................................... 75 
Câu 55: Perspective-Employment .................................................................................... 76 
Câu 56: REVIEW EXERCISE......................................................................................... 77 
Câu 57:.............................................................................................................................. 78 
Câu 58: Software .............................................................................................................. 79 
Câu 59: Data ..................................................................................................................... 81 
Câu 60: Applications ........................................................................................................ 83 
Câu 61: People.................................................................................................................. 85 
Câu 62: REVIEW EXERCISE......................................................................................... 86 
Câu 63:.............................................................................................................................. 87 
Câu 64: Networks ............................................................................................................. 90 
Câu 65: Software .............................................................................................................. 91 
Câu 66: Data ..................................................................................................................... 93 
Câu 67: Applications ........................................................................................................ 96 
Câu 68: People.................................................................................................................. 97 
Câu 69: REVIEW EXERCISE......................................................................................... 98 
Mục lục 
 134
Câu 70: ..............................................................................................................................99 
Câu 71: Software .............................................................................................................101 
Câu 72: Data....................................................................................................................103 
Câu 73: Applications .......................................................................................................105 
Câu 74: People.................................................................................................................107 
Câu 75: REVIEW EXERCISE........................................................................................108 
ĐÁP ÁN ..............................................................................................................................110 
Câu 1: ..............................................................................................................................110 
Câu 2: ..............................................................................................................................110 
Câu 3: ..............................................................................................................................110 
Câu 4: ..............................................................................................................................111 
Câu 5: ..............................................................................................................................111 
Câu 6: ..............................................................................................................................111 
Câu 7: ..............................................................................................................................111 
Câu 8: ..............................................................................................................................112 
Câu 9: ..............................................................................................................................112 
Câu 10: ............................................................................................................................112 
Câu 11: ............................................................................................................................113 
Câu 12: ............................................................................................................................113 
Câu 13: ............................................................................................................................113 
Câu 14: ............................................................................................................................113 
Câu 15: ............................................................................................................................114 
Câu 16: ............................................................................................................................114 
Câu 17: ............................................................................................................................114 
Câu 18: REVIEW EXERCISE........................................................................................115 
Câu 19: ............................................................................................................................116 
Câu 20: ............................................................................................................................116 
Câu 21: ............................................................................................................................117 
Câu 22: ............................................................................................................................117 
Câu 23: ............................................................................................................................118 
Câu 24: ............................................................................................................................118 
Câu 25: ............................................................................................................................119 
Câu 26: ............................................................................................................................119 
Câu 27: ............................................................................................................................119 
Câu 28: ............................................................................................................................120 
Câu 29: ............................................................................................................................120 
Câu 30: ............................................................................................................................120 
Mục lục 
 135
Câu 31:............................................................................................................................ 120 
Câu 32:............................................................................................................................ 121 
Câu 33:............................................................................................................................ 121 
Câu 34:............................................................................................................................ 121 
Câu 35:............................................................................................................................ 121 
Câu 36:............................................................................................................................ 121 
Câu 37:............................................................................................................................ 122 
Câu 38:............................................................................................................................ 122 
Câu 39:............................................................................................................................ 122 
Câu 40:............................................................................................................................ 122 
Câu 41:............................................................................................................................ 122 
Câu 42:............................................................................................................................ 123 
Câu 43 :........................................................................................................................... 123 
Câu 44:............................................................................................................................ 123 
Câu 45:............................................................................................................................ 123 
Câu 46:............................................................................................................................ 123 
Câu 47:............................................................................................................................ 124 
Câu 48:............................................................................................................................ 124 
Câu 49:............................................................................................................................ 124 
Câu 50:............................................................................................................................ 124 
Câu 51:............................................................................................................................ 124 
Câu 52:............................................................................................................................ 125 
Câu 53:............................................................................................................................ 125 
Câu 54:............................................................................................................................ 125 
Câu 55:............................................................................................................................ 126 
Câu 56: Review exercise ................................................................................................ 126 
Câu 57:............................................................................................................................ 126 
Câu 58:............................................................................................................................ 126 
Câu 59:............................................................................................................................ 126 
Câu 60:............................................................................................................................ 127 
Câu 61:............................................................................................................................ 127 
Câu 62: Review .............................................................................................................. 127 
Câu 63:............................................................................................................................ 127 
Câu 64:............................................................................................................................ 127 
Câu 65:............................................................................................................................ 128 
Câu 66:............................................................................................................................ 128 
Câu 67:............................................................................................................................ 128 
Mục lục 
 136
Câu 68: ............................................................................................................................128 
Câu 69: Review ...............................................................................................................129 
Câu 70: ............................................................................................................................129 
Câu 71: ............................................................................................................................129 
Câu 72: ............................................................................................................................130 
Câu 73: ............................................................................................................................130 
Câu 74: ............................................................................................................................130 
Câu 75: ............................................................................................................................130 
MỤC LỤC...........................................................................................................................132 
TIẾNG ANH 
CHUYÊN NGÀNH CNTT 
Mã số: 492ANH214 
Chịu trách nhiệm bản thảo 
TRUNG TÂM ÐÀO TẠO BƯU CHÍNH VIỄN THÔNG 1