计算机专业英语教程(第三版)答案

Unit One/Section AI.Fill in the blanks with the information given in the text:1.Charles Babbage;Augusta Ada Byron2.input;output3.VLSI4.workstations;mainframes5.vacuum;transistors6.instructions;software7.digit;eight;byte8.microminiaturization;chipII.Translate the following terms or phrases from English into Chinese and vice versa:1.artificial intelligence人工智能2.paper-tape reader纸带阅读器3.optical computer光计算机4.neural network神经网络5.instruction set指令集6.parallel processing并行处理7.difference engine差分机8.versatile logical element通用逻辑元件9.silicon substrate硅衬底10.vacuum tube真空管11.数据的存储与处理the storage and handling of data12.超大规模集成电路very large-scale integrated circuit13.中央处理器central processing unit14.个人计算机personal computer15.模拟计算机analogue computer16.数字计算机digital computer17.通用计算机general-purpose computer18.处理器芯片processor chip19.操作指令operating instructions20.输入设备input deviceIII.Fill in each of the blanks with one of the words given in the following list,making changes if necessary:We can define a computer as a device that accepts input,processes data,stores data,and produces output.According to the mode of processing,computers are either analog or digital.They can also be classified as mainframes,minicomputers,workstations,or microcomputers.All else(for example,the age of the machine)being equal,this categorization provides some indication of the computer’s speed,size,cost,and abilities.Ever since the advent of computers,there have been constant changes.First-generationcomputers of historic significance,such as UNIVAC(通用自动计算机),introduced intheearly 1950s,were based on vacuum tubes.Second-generation computers,appearing in theearly 1960s,were those in which transistors replaced vacuum tubes.In third-generationcomputers,dating from the 1960s,integrated circuits replaced transistors.In fourth-generationcomputers such as microcomputers,which first appeared in the mid-1970s,large-scaleintegration enabled thousands of circuits to be incorporated on one chip.Fifth-generationcomputers are expected to combine very-large-scale integration with sophisticated approachesto computing,including artificial intelligence and true distributed processing.IV.Translate the following passage from English into Chinese:计算机将变得更加先进，也将变得更加容易使用。

《计算机英语（第3版）》参考译文第一单元：计算机与计算机科学课文A：计算机概览一、引言计算机是一种电子设备，它能接收一套指令或一个程序，然后通过对数字数据进行运算或对其他形式的信息进行处理来执行该程序。

要不是由于计算机的发展，现代的高科技世界是不可能产生的。

不同类型和大小的计算机在整个社会被用于存储和处理各种数据，从保密政府文件、银行交易到私人家庭账目。

计算机通过自动化技术开辟了制造业的新纪元，而且它们也增强了现代通信系统的性能。

在几乎每一个研究和应用技术领域，从构建宇宙模型到产生明天的气象报告，计算机都是必要的工具，并且它们的应用本身就开辟了人们推测的新领域。

数据库服务和计算机网络使各种各样的信息源可供使用。

同样的先进技术也使侵犯个人隐私和商业秘密成为可能。

计算机犯罪已经成为作为现代技术代价组成部分的许多风险之一。

二、历史第一台加法机是法国科学家、数学家和哲学家布莱斯?帕斯卡于1642年设计的，它是数字计算机的先驱。

这个装置使用了一系列带有10个齿的轮子，每个齿代表从0到9的一个数字。

轮子互相连接，从而通过按照正确的齿数向前转动轮子，就可以将数字彼此相加。

17世纪70年代，德国哲学家和数学家戈特弗里德?威廉?莱布尼兹对这台机器进行了改良，设计了一台也能做乘法的机器。

法国发明家约瑟夫―玛丽?雅卡尔，在设计自动织机时，使用了穿孔的薄木板来控制复杂图案的编织。

在19世纪80年代期间，美国统计学家赫尔曼?何勒里斯，想出了使用类似雅卡尔的木板那样的穿孔卡片来处理数据的主意。

通过使用一种将穿孔卡片从电触点上移过的系统，他得以为1890年的美国人口普查汇编统计信息。

1、分析机也是在19世纪，英国数学家和发明家查尔斯?巴比奇，提出了现代数字计算机的原理。

他构想出旨在处理复杂数学题的若干机器，如差分机。

许多历史学家认为，巴比奇及其合伙人，数学家奥古斯塔?埃达?拜伦，是现代数字计算机的真正先驱。

巴比奇的设计之一，分析机，具有现代计算机的许多特征。

计算机英语实用教程第三版课后练习题含答案第一章练习题答案1. What is the difference between a CPU and a GPU?A CPU (Central Processing Unit) is a general-purpose processor that performs tasks that require complex arithmetic and logical operations. A GPU (Graphics Processing Unit), on the other hand, is a specialized processor that is designed to handle tasks that involve highly parallelizable computations, such as those required for rendering graphics.2. What is the difference between RAM and ROM?RAM (Random Access Memory) is a type of memory that stores data temporarily while the computer is running. RAM is volatile, meaning that its contents are erased when the computer is turned off. ROM (Read-Only Memory), on the other hand, is a type of memory that stores data permanently, even when the computer is turned off. ROM is non-volatile, meaning that its contents are retned even when there is no power.3. What is the difference between a bit and a byte?A bit is the smallest unit of digital information, represented by a binary digit (0 or 1). A byte, on the other hand, is a unit of digital information that consists of eight bits. Bytes are commonly used to represent characters, such as letters and numbers.4. What is the purpose of an operating system?An operating system (OS) is a software program that manages the resources of a computer, including the CPU, memory, storage, and devices such as printers and displays. The purpose of an operating system is to provide an environment in which applications can run and interact with the hardware without directly accessing the underlying hardware.5. What is the difference between a compiler and an interpreter?A compiler is a program that translates the source code of a program into executable code that can be run on a specific computer platform. The resulting executable code can be run multiple times without the need for recompilation. An interpreter, on the other hand, is a program that reads and executes source code instructions one at a time. Interpreted code is typically slower than compiled code, but does not require the extra step of compilation before it can be run.第二章练习题答案1. What is the difference between a LAN and a WAN?A LAN (Local Area Network) is a network that connects computers and other devices that are located in the same physical location, such as an office building or a home. A WAN (Wide Area Network), on the other hand, is a network that connects computers and other devices that are located in different physical locations, often separated by vast distances.2. What is a router and how does it work?A router is a device that connects two or more networks together and forwards data between them. Routers use routing tables to determine thebest path for data to take between networks, and use protocols such as TCP/IP to communicate with other devices on the network.3. What is the difference between TCP and UDP?TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) are both protocols used for transmitting data over the internet. TCP is a connection-oriented protocol, which means that it establishes avirtual circuit between two endpoints over which data can be transmitted. TCP uses error correction and flow control to ensure that data arrivesat its destination correctly and in the correct order. UDP, on the other hand, is a connectionless protocol that does not establish a virtual circuit between endpoints. UDP does not provide error correction or flow control, but is often used in situations where speed and simplicity are more important than reliability.4. What is a DNS server?A DNS (Domn Name System) server is a special type of server that translates domn names into IP addresses. When a user enters a domn name into their web browser, the browser sends a request to a DNS server to find the corresponding IP address for that domn name. The DNS serverthen returns the IP address to the browser, which can then connect tothe website.5. What is a firewall and how does it work?A firewall is a security device that is used to protect a networkfrom unauthorized access. Firewalls can be implemented as hardware or software, and typically work by examining incoming and outgoing network traffic and blocking any traffic that does not meet a set of predefinedrules. Firewalls can be configured to block specific types of traffic, such as traffic from certn IP addresses or traffic that uses a certn protocol. Firewalls can also be configured to allow or deny access to specific network resources based on user or device credentials.。

计算机专业英语全部答案(第三版)Unit1EX11 F2 T3 T4 F5 T6 F7 T 8 T 9 T 10FEX2Input hardware, storage hardware, processing hardware, output hardware power, speed, memorycentral processing unitinternal, primary, memorykeyboard, central processing unit, main memory, monitorEX3 PARTA1 F2 D3 G4 C5 B6 A7 E 8 HEX3 PART B1 F2 E3 G4 B5 A6 C7D 8 HEX41 input device2 screen3 manipulates4 instructions5 retrieve6 codes7 hardcopy8 functionEX51 T2 T3 F4 F5 T6 F7 T 8 TUNIT2EX11 T2 F3 T4 F5 T6 F7 T 8 FEX21 sizes, shapes, processing capabilities2 supercomputers, mainframe computers, minicomputers, microcomputers3 mainframe computer4 microcomputer, storage locations5 portables, laptop computers, desktop workstations6 semiconductor7 CPU, memory, storage, devices, processing, users8 microprocessor chipEX3 PARTA1 C2 A3 H4 I5 E6 F7 G 8 JEX3 PARTB1 capacity2 device3 laptop computer4 Portable computers5 Silicon6 semiconductor7 workstation8 Voltage, voltage9 RAM10ROMEX41 portable2 access3 main memory4 sophisticated programs5 processing capabilities6 instructions7 computation8 computer professionalEX51 T2 T3 F4 F5 F6 T7 F 8 T 9 T 10T11F 12T 13 T 14 TUNIT3EX11 T2 F3 T4 T5 T6 T7 F 8 F 9 T 10 F11T 12F 13F 14TEX21 microprocessor2 bus3 register 4control unit5 processor6 binary7 arithmetic, logic 8 milliseconds, microseconds9 instruction 10execution 11megahertz 12wordsize EX3 PARTA1 F2 A3 J4 C5 D6 E7 H 8 I 9 B 10GEX3 PARTB1 Storage 2chip3 buses4 ALU5 register 6control unit7 machine language 8 binary system 9 bits 10computer programEX41 configuration2 decodes3 data bus4 characters5 converts6 synchronize7 circuitry8 internal clockEX51 T2 F3 F4 T5 F6 F7 T 8 T 9 F 10 FUNIT4EX11 F2 T3 T4 F5 F6 T7 F 8 T 9 T 10 F11T 12T 13F 14F 15T 16F17T 18F 19T 20F21T 22FEX2memoryRAMdiskettes, diskschipsparityexpanded, extendedmonochromecacheROMupdatedEX3 PART A1 B2 E3 C4 J5 I6 H 7A 8 F 9 G 10DEX3 PART Bsecondary storagebufferaccesscodedisketteslotterminalsmotherboardbytescreenEX4desktopsoftwareanimationtransferredsophisticatedcompatiblecacheupgradeEX51 T2 F3 F4 T5 T6 T7 T8 F9 T 10 F11T 12F 13F 14T 15T 16F17F 18F 19F 20T21T 22TUnit 5Ex1:1 T2 T3 F4 T5 F6 F7 F 8 T 9 T 10 T11F 12T 13F 14F 15T 16T17F 18T 19F 20F21T 22T 23TEX2mail, courierhub, starlocal area networkpacketsEthernetkilobits per second, megabits per second, gigabits per second circuit switchingreassembledinternet protocol, transmission control protocol datagramsframesbinary, decimalEX3 part A1 C2 E3 B4 F5 A6 D7 H 8 GEX3 part Bhubzippeddecimalframebinary numberinternetpacketbandwidthEX4forwardedreassembledare encapsulatedcableburstysubmitare retransmittedprotocolEX5IP addressnotationdotted-decimalcomputer networkbackgroundsharedgeographicprivacyExercise to the Passage for ReadingEX6有意为维修技师使用所留被弃的、丢失的或损坏了的数据都进了数据桶。

Unit 1 Section A（P8）I．Fill in the blanks with the information given in the text:1．Charles Babbage; Augusta Ada Byron2．input; output3．VLSI4．workstations; mainframes5．vacuum; transistors6．instructions; software7．digit; eight; byte8．microminiaturization; chipII．Translate the following terms or phrases from English into Chinese and vice versa:1．artificial intelligence 人工智能2．paper-tape reader 纸空阅读机3．optical computer 光学计算机4．neural network 神经网络5．instruction set 指令集6．parallel processing 平行处理7．difference engine 差分机8．versatile logical element 通用逻辑器件9．silicon substrate 硅基10．vacuum tube 真空管（电子管）11．the storage and handling of data 数据的存储与处理12．very large-scale integrated circuit 超大规模集成电路13．central processing unit 中央处理器14．personal computer 个人计算机15．analogue computer 模拟计算机16．digital computer 数字计算机17．general-purpose computer 通用计算机18．processor chip 处理器芯片19．operating instructions 操作指令20．input device 输入设备III．Fill in each of the blanks with one of the words given in the following list, making changes if necessary:We can define a computer as a device that accepts input, processes data, stores data, and produces output. According to the mode of processing, computers are either analog or digital. They can be classified as mainframes, minicomputers, workstations, or microcomputers. All else (for example, the age of the machine) being equal, this categorization provides some indication of the computer’s speed, size, cost, and abilities.Ever since the advent of computers, there have been constant changes. First-generation computers of historic significance, such as UNIVAC, introduced in the early 1950s, were based on vacuum tubes. Second-generation computers, appearing in the early 1960s, were those in which transistors replaced vacuum tubes. In third-generation computers, dating from the 1960s, integrated circuits replaced transistors. In fourth-generation computers such as microcomputers, which first appeared in the mid-1970s, large-scale integration enabled thousands of circuits to be incorporated on one chip. Fifth-generation computers are expected to combine very-large-scale integration with sophisticated approaches to computing, including artificial intelligence and true distributed processing.Unit 2 Section A（P34）I．Fill in the blanks with the information given in the text:1．input; output; storage2．Basic Input Output System3．flatbed scanners; hand-held scanners4．LCD-based5．dot-matrix printers; inkjet printers6．disk drives; memory7．Volatile8．serial; parallelII．Translate the following terms or phrases from English into Chinese and vice versa:1．Function key 功能键2．voice recognition module 语音识别模块3．touch-sensitive region 触感区，触摸区4．address bus 地址总线5．flatbed scanner 平板扫描仪6．dot-matrix printer 点阵打印机（针式打印机）7．parallel connection 并行连接8．cathode ray tube 阴极射线管9．video game 电子游戏（港台亦称电玩）10．audio signal 音频信号11．operating system 操作系统12．LCD (liquid crystal display) 液晶显示（器）13．inkjet printer 喷墨打印机14．data bus 数据总线15．serial connection 串行连接16．volatile memory 易失性存储器17．laser printer 激光打印机18．disk drive 磁盘驱动器19．BIOS (Basic Input Output System) 基本输入输出系统20．video display 视频显示器III．Fill in each of the blanks with one of the words given in the following list, making changes if necessary:CD-ROM stands for compact disk read-only memory. Unlike floppy and hard disks, which use magnetic charges to represent 1s and 0s, optical disks use reflected light. On a CD-ROM disk, 1s and 0s are represented by flat areas and bumpy areas (called “pits”) on its bottom surface. The CD-ROM disk is read by a laser that projects a tiny beam of light on these areas. The amount of reflected light determines whetherthe area represents a 1 or a 0.Like a commercial CD found in music stores, a CD-ROM is a “read-only” disk. Read-only means it cannot be written on or erased by the user. Thus, you as a user have access only to the data imprinted by the publisher.A single CD-ROM disk can store650 megabytes of data. That is equivalent to 451 floppy disks. With that much information on a single disk, the time to retrieve or access the information is very important. An important characteristic of CD-ROM drives is their access rate.Unit 3 Section A（P57）I．Fill in the blanks with the information given in the text:1．artificial; instructions2．low-level; high-level3．low-level4．Machine5．functional; logic6．Statement7．Module8．digitalII．Translate the following terms or phrases from English into Chinese and vice versa:1．storage register 存储寄存器2．function statement 函数语句3．program statement 程序语句4．object-oriented language 面向对象语言5．assembly language 汇编语言6．intermediate language 中间语言，中级语言7．relational language 关系（型）语言8．artificial language 人造语言9．data declaration 数据声明10．SQL 结构化查询语言11．executable program 可执行程序12．program module 程序模块13．conditional statement 条件语句14．assignment statemen t赋值语句15．logic language 逻辑语言16．machine language 机器语言17．procedural language 过程语言18．programming language 程序设计语言19．run a computer program 运行计算机程序20．computer programmer 计算机程序设计员III．Fill in each of the blanks with one of the words given in the following list, making changes if necessary:A programming language is a language used to write instructions for the computer. It lets the programmer express data processing in a symbolic manner without regard to machine-specific details.The difficulty of writing programs in the machine language of 0s and 1s led first to the development of assembly language, which allows programmers to use mnemonics for instructions and symbols for variables. Such programs are then translated by a program known as an assembler into the binary encoding used by the computer. Other pieces of system software known as linking loaders combine pieces of assembled code and load them into the machine’s main memory unit, where they are then ready for execution. The concept of linking separate pieces of code was important, since it allowed “libraries” of programs to be built up to carry out common tasks—a first step toward the increasingly emphasized notion of software reuse. Assembly language was found to be sufficiently inconvenient that higher-level languages (closer to natural languages) were invented in the 1950s for easier, faster programming; alongwith them came the need for compilers, programs that translate high-level language programs into machine code. As programming languages became more powerful and abstract, building efficient compilers that create high-quality code in terms of execution speed and storage consumption became an interesting computer science problem in itself.Unit 4 Section A（P81）I．Fill in the blanks with the information given in the text:1．application; operating2．assemblers3．compiler4．interpreter5．Debugger6．Loop7．device driver8．John von NeumannII．Translate the following terms or phrases from English into Chinese and vice versa:1．inference engine 推理机2．system call 系统调用3．compiled language 编译语言4．parallel computing 平行计算5．pattern matching 模式匹配6．free memory 空闲内存7．interpreter program 解释程序8．library routine 库程序9．intermediate program 中间程序，过渡程序10．source file 源文件11．interpreted language 解释（性）语言12．device driver 设备驱动程序13．source program 源程序14．debugging program 调试程序15．object code 目标代码16．application program 应用程序17．utility program 实用程序18．logic program 逻辑程序19．ink cartridge 墨盒20．program storage and execution 程序的存储与执行III．Fill in each of the blanks with one of the words given in the following list, making changes if necessary:A compiler, in computer science, is a computer program that translates source code into object code. Software engineers write source code using high-level programming languages that people can understand. Computers cannot directly execute source code, but need a compiler to translate these instructions into a low-level language called machine code.Compilers collect and reorganize (compile) all the instructions in a given set of source code to produce object code. Object code is often the same as or similar to a computer’s machine code. If the object code is the same as the machine language, the computer can run the program immediately after the compiler produces its translation. If the object code is not in machine language, other programs—such as assemblers, binders (联编程序), linkers (连接程序), and loaders (装入程序)—finish the translation.Most computer languages use different versions of compilers for different types of computers or operating systems, so one language may have different compilers for personal computers (PC) and Apple Macintosh computers. Many different manufacturers often produce versions of the same programming language, so compilers for a language may vary between manufacturers.Unit 7 Section A（P153）I．Fill in the blanks with the information given in the text:1．Telegraph2．dots; dashes3．Media4．point-to-point5．Analog6．Digital7．text-based8．modemII．Translate the following terms or phrases from English into Chinese and vice versa:1．microwave radio 微波无线电2．digital television 数字电视3．DSL 数字用户线路4．analog transmission 模拟传输5．on-screen pointer 屏幕（触摸屏）上的指示（器）6．computer terminal 计算机终端7．radio telephone 无线电话8．cellular telephone 蜂窝电话（移动电话）9．decentralized network 分散的网络10．wire-based internal network 基于普通网线的内部网络11．fiber-optic cable 光缆12．fax machine 传真机13．wireless communications 无线通信14．point-to-point communications 点对点通信15．modulated electrical impulse 调制电脉冲16．communication(s) satellite 通信卫星17．telegraph key 电报电键18．transmission medium 传输媒体19．cordless telephone 无绳电话20．metal conductor 金属导体III．Fill in each of the blanks with one of the words given in the following list, making changes if necessary:Data communications is the process of transmitting and receiving data in an orderly way so the data that arrives at its destination is an accurate duplication of the data that was sent. When data travels a short distance, such as when you send data from your computer to your printer, it is referred to as local communications. When data travels a long distance, the communication is referred to as telecommunications; the prefix “tele” is derived from a Greek word that means “far” or “far off.”The difference between a short distance and a long distance is somewhat arbitrary (武断的). For example, if your computer sends data to a printer in the next room, it is regarded as local communications; if you phone the person in the next room, you are transmitting data over a telecommunications device. However, the same basic communications concepts apply to both local communications and telecommunications.Basic data communications concepts are the building blocks for understanding how data travels on a communications system. These concepts come in handy (派得上用处) when you install, configure, or upgrade a local area network. In addition, these concepts help you set up modems, fax machines, and cellular data transfers.Unit 12 Section A（P272）I．Fill in the blanks with the information given in the text:1．employees2．Hackers3．Crackers4．damage; manipulation5．Worm6．software piracy7．access; backup8．PasswordsII．Translate the following terms or phrases from English into Chinese and vice versa:1．encryption program 加密程序2．deletion command 删除命令3．authorized user 授权的用户4．backup copy 备份的副本5．voltage surge 电涌，浪涌电压6．circuit breaker 断路器7．electronic component 电子器件8．data-entry error 数据输入错误9．electronic break-in 电路中断10．power line 电力线，输电线11．detection program 检测程序12．power source 电源13．destructive computer program 破坏性计算机程序14．computer virus 计算机病毒15．software piracy 软件侵权16．hard-disk drive 硬盘驱动器17．virus checker 病毒检查程序18．primary storage 主存储器19．electronic bulletin board 电子公告板20．surge protector 浪涌电压保护器III．Fill in each of the blanks with one of the words given in the following list, making changes if necessary:A virus or other unwelcome surprise can lurk in your computer system for days or months without discovery. A time bomb is a computer program that stays in your system undetected until it is triggered by a certain event in time, such as when the computer system clock reaches a certain date. A time bomb is usually carried by a virus or Trojan horse. For example, the Michelangelo virus contains a time bomb designed to damage files on your hard disk on March 6, the birthday of artist Michelangelo.A logic bomb is a computer program that is triggered by the appearance or disappearance of specific data. For example, suppose a programmer in a large corporation believes that she is on the list of employees to be terminated during the next cost-cutting campaign. Her hostility (敌意) overcomes her ethical (道德的) judgment, and she creates a logic bomb program that checks the payroll (在职人员名单) file every day to make sure her employment status is still active. If the programmer’s status changes to “terminated,” her logic bomb activates a program that destroys data on the computer.A time bomb or logic bomb might do mischief(祸害) in your computer long before the timer goes off. If the bomb contains a virus, it could replicate and spread to other files. Meanwhile, you might send files from your computer to other computers, not knowing that they are infected.。

电子工业出版社“计算机英语教程（第三版）”练习答案第1课一、判断正误:1. F,2. F,3. T,4. T,5. T,6. T,7. F,8. T,9. T, 10. T二、根据课文内容填空:1. microprocessor, memory, disk drives, displays and keyboard2. the display screen3. the keyboard4. to store the BIOS instructions and the Configuration Utility program5. 61446. monochrome and color7. hard disk drives and floppy disk drives 或 fixed disk drives anddiskette drives8. letter keys, punctuation keys, a spacebar and function, numeric, andarrow keys9. mouse10. baud rate三、指出下列句中的定语从句，然后把句子译成汉语。

1. where we put our computer我们放计算机的那个房间很大。

2. who are requiring the full color capabilities of the color VGA monitor那些要求彩色显示器具有全彩色性能的用户，将发现本彩色VGA显示器是完美的选择。

3. why there are heat losses in a steam engine你知道为什么蒸气发动机中会有热量丢失吗？4. which allows electric current to flow easily能让电流容易流过的材料叫导体。

5. whose father works in AAA computer company汤姆就是那个他父亲在AAA计算机公司工作的学生。

Unit Seven: Computer CommunicationsUnit Seven/Section AI. Fill in the blanks with the information given in the text:1. telegraph2. dots; dashes3. media4. point-to-point5. analog6. digital7. text-based8. modemII. Translate the following terms or phrases from English into Chinese and vice versa:1. microwave radio 微波无线电2. digital television 数字电视3. DSL 数字用户线路4. analog transmission 模拟传输5. on-screen pointer 屏幕上的指针6. computer terminal 计算机终端7. radio telephone 无线电话8. cellular telephone 蜂窝电话，移动电话，手机9. decentralized network 分散型网络10. wire-based internal network 基于导线的内部网络，有线内部网11. 光缆 fiber-optic cable12. 传真机 fax machine13. 无线通信 wireless communications14. 点对点通信 point-to-point communications15. 调制电脉冲 modulated electrical impulse16. 通信卫星 communication(s) satellite17. 电报电键 telegraph key18. 传输媒体 transmission medium (或media)19. 无绳电话 cordless telephone20. 金属导体 metal conductorIII. Fill in each of the blanks with one of the words given in the following list, makingchanges if necessary:Data communications is the process of transmitting and receiving data in an orderly wayso the data that arrives at its destination is an accurate duplication (复制) of the data that wassent. When data travels a short distance, such as when you send data from your computer toyour printer, it is referred to as local communications. When data travels a long distance, thecommunication is referred to as telecommunications; the prefix (前缀) “tele” is derived from aGreek word that means “far” or “far off.”The difference between a short distance and a long distance is somewhat arbitrary (武断的). For example, if your computer sends data to a printer in the next room, it is regarded aslocal communications; if you phone the person in the next room, you are transmitting dataover a telecommunications device. However, the same basic communications concepts applyto both local communications and telecommunications.Basic data communications concepts are the building blocks for understanding how datatravels on a communications system. These concepts come in handy (派得上用处) when youinstall, configure, or upgrade a local area network. In addition, these concepts help you set upmodems, fax machines, and cellular data transfers.IV. Translate the following passage from English into Chinese:个人计算机使用电信来提供传输链路，用于传送音频、视频、文本、软件和多媒体服务。

武汉微博教育整理分享—计算机英语第三版课后答案（二）课后答案Unit 4 Computer Language and ProgrammingSection A I．Fill in the blanks with the information given in the text:1．artificial; instructions2．low-level; high-level3．low-level4．Machine5．functional; logic6．Statement7．Module8．digitalII．Translate the following terms or phrases from English into Chinese andvice versa:1．storage register 存储寄存器2．function statement 函数语句3．program statement 程序语句4．object-oriented language 面向对象语言5．assembly language 汇编语言6．intermediate language 中间语言，中级语言7．relational language 关系（型）语言8．artificial language 人造语言9．data declaration 数据声明10．SQL 结构化查询语言11．executable program 可执行程序12．program module 程序模块13．conditional statement 条件语句14．assignment statemen t赋值语句15．logic language 逻辑语言16．machine language 机器语言17．functional language 函数式语言18．programming language 程序设计语言19．run a computer program 运行计算机程序20．computer programme r 计算机程序设计员III．Fill in each of the blanks with one of the words given in the following list, making changes if necessary:A programming language is a language used to write instructions for the computer. It lets the programmer express data processing in a symbolic manner without regard to machine-specific details.The difficulty of writing programs in the machine language of 0s and 1s led first to the development of assembly language, which allows programmers to use mnemonics for instructions and symbols for variables. Such programs are then translated by a program known as an assembler into the binary encoding used by the computer. Other pieces of system software known as linking loaders combine pieces of assembled code and load them into the machine’s main memory unit, where they are then ready for execution. The concept of linking separate pieces of code was important, since it allowed “libraries” of programs to be built up to carry out common tasks—a first step toward the increasingly emphasized notion of software reuse. Assembly language was found to be sufficiently inconvenient that higher-level languages (closer to natural languages) were invented in the 1950s for easier, faster programming; along with them came the need for compilers, programs that translate high-level language programs into machine code. As programming languages became more powerful and abstract, building efficient compilers that createhigh-quality code in terms of execution speed and storage consumption became an interesting computer science problem in itself.IV．Translate the following passage from English into Chinese.One especially powerful feature of OOP (object-oriented programming) languages is a property which is known as inheritance. Inheritance allows an object to take on the characteristics and functions of other objects to which it is functionally connected. Programmers connect objects by grouping them together in different classes and by grouping the classes into hierarchies. These classes and hierarchies allow programmers to define the characteristics and functions of objects without needing to repeat source code, the coded instructions in a program. Thus, using OOP languages can greatly reduce the time it takes for a programmer to write an application, and also reduce the size of the program. OOP languages are flexible and adaptable, so programs or parts of programs can be used for more than one task. Programs written with OOP languages are generally shorter in length and contain fewer bugs (缺陷), ormistakes, than those written with non-OOP languages.面向对象程序设计语言的一个特别强大的功能，是称为继承的特性。

计算机专业英语第三版刘子轶答案1、Jack can speak Japanese, and his brother can _______ speak Japanese. [单选题] *A. tooB. also(正确答案)C. eitherD. as well2、26．There’s some fruit in the kitchen. We ________ buy any. [单选题] * A．need toB．needn’t toC．don’t needD．don’t need to(正确答案)3、19．Students will have computers on their desks ________ . [单选题] *A．in the future(正确答案)B．on the futureC．at the momentD．in the past4、Your homework must_______ tomorrow. [单选题] *A. hand inB. is handed inC. hands inD. be handed in(正确答案)5、40．—________ apples do we need to make fruit salad?—Let me think…We need three apples. [单选题] *A．How longB．How oftenC．How muchD．How many(正确答案)6、Lucy _______ at 7:00 every day. [单选题] *A. go to schoolB. goes to school(正确答案)C. to go to schoolD. went?to?school7、37．It’s fun _________ a horse with your best friends on the grass. [单选题] *A．to ride (正确答案)B．ridingC．ridesD．ride8、He _______ walks to school, because he lives near school. [单选题] *A. sometimes(正确答案)B. neverC. doesn’tD. don’t9、58．—How much is Lucy's skirt?—She________320 yuan for it. I think it's a little dear. [单选题] *A．tookB．paid(正确答案)C．spentD．bought10、He’s so careless that he always _______ his school things at home. [单选题] *A. forgetsB. leaves(正确答案)C. putsD. buys11、There may be something wrong with her _______. She can’t see things clearly. [单选题] *A. eyes(正确答案)B. earsC. mouthD. nose12、We often go to the zoo _______ Saturday mornings. [单选题] *A. atB. inC. on(正确答案)D. of13、Mom is making dinner. It _______ so nice! [单选题] *A. smells(正确答案)B. tastesC. feelsD. sounds14、26．—Mary, is this your pen?—No, it isn't. ________ is black. [单选题] *A．MyB．IC．MeD．Mine(正确答案)15、Mom, I need you ______ me a pencil box.（）[单选题] *A. buyB. buyingC. to buy(正确答案)D. to buying16、3．—Will you buy the black car?No, I won't. I will buya(n) ________ one because I don't have enough money. [单选题] *A．cheap(正确答案)B．expensiveC．highD．low17、--Do you know _______ girl with long curly hair?--Yes. She is Mary. She plays _______ piano very well. [单选题] *B. the; /C. the; the(正确答案)D. a; the18、We have made a _______ tour plan to Sydney. [单选题] *A. two dayB. two daysC. two-day(正确答案)D. two-days19、77．–Hey! Any idea about learning abroad? --You （)google the College Board to learn the names of college you ____ be interested in [单选题] *A. may;needB. can; might (正确答案)C. will; shouldD. shall; must20、The manager isn’t in at the moment. May I _______ a message? [单选题] *A. take(正确答案)B. makeD. keep21、As I know, his salary as a doctor is much higher_____. [单选题] *A. than that of a teacher(正确答案)B. than a teacherC. to that of a teacherD. to a teacher22、She spoke with a strong Scottish（）[单选题] *A. speechB. accent(正确答案)C.voiceD. sound23、He was?very tired，so he stopped?_____ a rest. [单选题] *A. to have(正确答案)B. havingC. haveD. had24、76．AC Milan has confirmed that the England star David Beckham （）the team soon. [单选题] *A. has rejoinedB. was going to rejoinC. rejoinedD. is to rejoin(正确答案)25、The manager demanded that all employees _____ on time. [单选题] *A. be(正确答案)B. areC. to beD. would be26、--Do you often go to the cinema _______ Sunday?--No, we _______. [单选题] *A. on; don’t(正确答案)B. on; aren’tC. in; doD. in; don’t27、66．—How much meat do you want?—________．[单选题] *A．Sorry, there isn't anyB．I can't give you anyC．Half a kilo, please(正确答案)D．Twelve yuan a kilo28、11．No one ________ on the island(岛). [单选题] * A．liveB．lives(正确答案)C．livingD．are living29、You can _______ Bus 116 to get there. [单选题] *A. byB. take(正确答案)C. onD. in30、They were both born _______ March, 1 [单选题] *A. in(正确答案)B. atC. onD. since。

计算机专业英语教程（第3版）练习参考答案宋德福司爱侠Unit 1[Ex 1]1..F2.T3.T4.F5.T6.T7.T8.T9.T 10.F[Ex 2]1.input, storage, processing, and output2. power, speed, memory3. central processing unit4. internal, primary, memory5. keyboard, central processing unit, main memory, monitor[Ex 3]A. 1.F 2.D 3.G 4.C 5.B 6.E 7.H 8.AB. er 2.monitor 3.data 4.keyboard 5.data processing 6. information puter 8.memory [Ex 4]1.input device2. screen, screen3.manipulates4.instructions5.retrieve6.code7.hard copy8.function/code/instruction[Ex 5]1.T2.T3.F4.F5.T6.F7.T8.FUnit 2[Ex 1]1.T2.F3.T4.F5.T6.T7.T8.F[Ex 2]1. sizes, shapes, processing capabilities2. supercomputer, mainframe computer, minicomputers, microcomputers3. mainframe computer4.microcomputers, storage locations5. portables, laptop computers/ notebook/palm-sized computer, desktop workstations6.semiconductor7. CPU, memory, storage, devices, processing, users8. microprocessor ship[Ex 3]A. 1.C 2.A 3.H 4.I 5.E 6.F 7.G 8.BB. 1.capacity 2.device ptop computer 4.portable computers5.silicon6. semiconductor7.workstation8.voltage9.RAM 10.ROM[Ex 4]1. portable2.access3. main memory4.sophisticated programs5. processing capabilities6.instructions7.semiconductor putationputer professional[Ex 5]1.T2.T3.T4.F5.F6.T7.F8.T9.F 10.T 11.F 12.T 13.T 14.TUnit 3[Ex 1]1.T2.F3.T4.T5.T6.T7.F8.F9.T 10.F 11.T 12.F[Ex 2]1.microprocessor2.bus3.registers4.control unit5.processor6.binary7.arithmetic, logicalliseconds, microseconds, nanoseconds. 9.instruction 10.execution 11.megaherts 12.wordsize [Ex 3]A. 1.J 2.D 3.F 4.B 5.C 6.E 7.I 8.H 9.A 10.GB. 1.storage 2.chip 3.registers 4.ALU 5.bus 6.control bus 7.machine language 8.binary system9.bits 10. computer program[Ex 4]1. configuration2. converts3.data bus4.characters5.converts6.synchronize7.circuitry8.internal clock [Ex 5]1.T2. F3.F4.T5.T6.F7.T8.T9.T 10.FUnit 4[Ex 1]1.F2.T3.T4.T5.F6.T7.F8.T9.T 10.F 11.T 12.T 13.F 14.F 15.T 16.F 17.T 18.F 19 T 20.F 21.T 22.F[Ex 2]1. main memory2.RAM3.diskettes/floppy disks; hard disks4.chips5.parity6.expanded,extended7.monochrome 8.cache 9.ROM 10.updated[Ex 3]A. 1.B 2.E 3.C 4.J 5.I 6.H 7.A 8.F 9.G 10.DB. 1.secondary storage 2.buffer 3.access 4.code 5.diskette 6.slots 7.terminals 8.motherboard9.bytes 10.screen[Ex 4]1.desktop2.software3.animation4.transferred5.sophisticatedpatible7.cache8.upgrade[Ex 5]1.T2.F3.T4.T5.F6.T7.F8.T9.T 10.T 11.T 12.T 13.T 14.F 15.F 16.TUnit 5[Ex 1]1.T2.F .3.F4.F5.T6.T7.T8.F9.F 10.T 11.F 12.F 13.T 14.T[Ex 2]1.floppy disks2.disk drive3.revolutions4.bits5.megabytes, gigabyte, terabyte6.density7.sectors8.1.44 [Ex 3]A. 1.H 2.F 3.E 4.D 5.C 6.A 7.B 8.GB. 1.read/write heads 2.read/write heads 3.magnetic tape 4.index 5.disk drivers 6.format 7.clone 8.tracks [Ex 4]1.increment2.spins3.activate4.specification5.magnetize6.overwrite7.contaminated8.mechnism [Ex 5]1.T2.F3.F4.F5.T6.T7.F8.T9.T 10.T 11.F 12.F 13.T 14.T 15.F 16.T 17.F 18.T 19.T 20.TUnit 6[Ex 1]1.F2.T3.F4.T5.T6.T7.F8.T9.T 10.F 11.F 12.F 13.T 14.F[Ex 2]patible2.hardcopy3.terminal,monitor4.inked ribbon5.line6.Thernal7.Monochrone8.liquid crystal display[Ex 3]A 1.G 2.B 3.I 4.F 5.D 6.H 7.C 8.E 9.J 10.AB 1.printers 2.hard copy 3.CRT 4.hardware 5.pixel 6.output 7.software 8.Line printers 9.plotters10.graphics[Ex 4]1. are attachedpatible3.flexible4.mechanism5.perform6.rotate7.transfer8.video[Ex 5]1.T2.T3.T4.T5.T6.F7.T8.F9.F 10.T 11.T 12.F 13.T 14.T 15.T 16.T 17.F 18.TUnit 7[Ex 1]1.T2.F3.T4.T5.F6.F7.T8.T9.F 10.F 11.F 12.T 13.F 14.T 15.T 16.F 17.T 18.T 19.F 20.F[Ex 2]1.printers, plotters2.graphics3.pins4.pages per minute5.dots per inch6.lines per minute7.non-impact 8.carbon[Ex 3]A. 1.D 2.F 3.B 4.A 5.G .6.E 7.C 8.HB. 1.print wheel 2.Microcomputers 3.ink-jet printer work 5.noise 6.output device7.desktop publishing 8.dot-matrix printers[Ex 4]1.installation2.categorized3.image4.ribbon5.monochrome6.physical7.referred to8.dot[Ex 5]1.F2.T3.F4.T5.F6.T7.F8.T9.T 10.F 11.F 12.T 13.T 14.T 15.FUnit 8[Ex 1]1.T2.T3.F4.T5.T6.T7.F8.T9.F 10.T 11.F 12.F 13.T 14.T 15.F 16.T[Ex 2]第3 页共7页1.inputting2.dumb, smart, intelligent3.dumb4.smart5.intelligent6.point-of-sale, automated teller machine7.POS 8.terminals 9.portable 10.moderms 11.transmitted municate[Ex 3]A. 1.G 2.E 3.A 4.F 5.C 6.B 7.H 8.DB. 1display screen 2.programming 3.telecommunications 4.function keys 5.retrive 6.minicomputers7.moderm 8.automated/automatic[Ex 4]1.intelligent2.verify3.Programmable4.specialized5.identify6.built-in7.high-volume8.are transmitted [Ex 5]1.T2.T3.F4.T5.F6.T7.F8.T9.T 10.T 11.T 12.F 13.T 14.TUnit 9[Ex 1]1.T2.T3.F4.T5.F6.F7.T8.T9.F 10.F 11.T 12.F 13.T 14.F 15.T 16.T 17.T 18.F[Ex 2]1.channels2.electrical pulses or charges, electromagnetic waves, pulses of light3.telephone lines, coaxial cables, microwave systems, satellites systems, fiber optic cables4.telephone linesworks6.atmosphere7.microwave tower8.gigahertz9.digital 10.light[Ex 3]A. 1.B 2.D 3.F 4.G 5.A 6.C 7.E 8.HB. 1.noise 2.trnasmission 3.Fiber optics 4.Microwave 5.synchronous 6.optical media7.Coaxial cable 8.digits[Ex 4]municate2.revolves3.detect4.encrypted5.nonconductive6.optical media7.susceptible8.relayed 9.antenna 10.pulses[Ex 5]1.F2.T3.T4.F5.T6.T7.T8.F9.T 10.T 11.F 12.T 13.T 14.T 15.F 16.T 17.T 19.F 20.T 21.F 22.TUnit 10[Ex 1]1.F2.F .3.F4.T5.T6.F7.T8.F9.T 10.T 11.F 12.F 13.T 14.T 15.T 16.F[Ex 2]1.three-dimensional2.joystick3.transmitter4.frames5.virtual[Ex 3]A. 1.C 2.G 3.D 4.H 5.B 6.F 7.A 8.EB. 1.sensors 2.virtual reality 3.software package 4.host computer 5.joystick 6.mouse 7.input 8.transmitter [Ex 4]1.Conveying2.responds3.incorporate4.signals5.performance6.mounted7.cumbersome8.insert[Ex 5]1.T2.f3.T4.F5.T6.T7.T8.T9.F 10.T 11.T 12.T 13.F 14.T 15.T 16.F 17.F 18.F 19.T 20.F 21.F 22.F23.T 24.T 25.T[Ex 1]1.F2.T3.F4.F5.T6.T7.F8.F9.T 10.T 11.F 12.T 13.F 14.T 15.T[Ex 2]1.caller2.audio boards3.directory4.clicking5.IRC[Ex 3]A. 1.F 2.A 3.G 4.B 5.H 6.C 7.I 8.D 9.J 10.EB. 1.update 2.hard disks 3.Audio boards 4.directory 5.menu 6.ports 7.download 8.online9.icon 10.bug[Ex 4]1.fixes2.register3.specify4.created5.remove6.installed7.execute8.to load[Ex 5]1.T2.F3.T4.T5.F6.T7.T8.F9.T 10.F 11.T 12.F 13.T 14.TUnit 12[Ex 1]1.F2.T .3.T4.T .5.F6.F7.T8.T9.F 10.T[Ex 2]pressed2.specify3.screen4.wide5.attributes6.optional7.directory8.subdirectories9.lowercase 10.wildcards 11.prompt 12.target[Ex 3]A. 1.H 2.D 3.G 4.C 5.F 6.B 7.E 8.AB. 1.execute 2.prompt 3.file 4.format 5.backup file pressed 7.parameter 8.lowercase[Ex 4]1.is displayed2.archive3.attribute4.default5.subdirectory6.extension7.abbreviated8.lowercase[Ex 5]1.T2.T3.F4.T5.T6.F 8.T 9.T 10.TUnit 13[Ex 1]1.T2.F .3.F4.T5.T6.T7.T8.F9.T 10.F 11.T 12.F 13.T 14.T 15.T 16.F 17.T 18.F 19.T 20.T[Ex 2]1.executable2.configure3.variables4.download5.double click6.performance7.explorer8.customize 9.log 10.feature[Ex 3]A. 1.A 2.F 3.B 4.G 5.C 6.D 7.E 8.HB. 1.utility program 2.documentation 3.spreadsheet piled 5.virus scanner 6.configuraiotn7.features 8.Viruses[Ex 4]1.infect, being detected2.customized3.folders4.optimizes5.highlighted6.reveal7.prompt第5 页共7页[Ex 5]1.T2.F3.T4.F5.T6.T7.T8.F9.F 10.T 11.F 12.T 13.T 14.F 15.F 16.F 17.T 18.T 19.F 20.TUnit 14[Ex 1]1.T2.F .3.T4.F5.F6.F7.T8.F9.T 10.T 11.F 12.T 13.F 14.T 15.T 16.T 17.T 18.T[Ex 2]1.duplicate2.destination3.entriespound, single-entry5.overwrite6.array7.one-dimensional8.two-dimensional9.arrays, table/.DBF[Ex 3]A. 1.E 2.D 3.B 4.C 5.AB. 1.record 2.backup 3.field 4.tables 5.array[Ex 4]1.duplicate2.specific3.source, destination4.current5.path6.assign7.original8.dialog[Ex 5]1.F2.F3.T4.F5.F6.F7.F8.F9.F 10.F 12.FUnit 15[Ex 1]1.F2.T3.T4.T5.F6.T7.T8.T9.F 10.F 11.F 12.T 13.F 14.T[Ex 2]1.browse2.sub-directory3.copyrighted4. custom-written5.unzip6.atrribute7.automatically8.decompressed[Ex 3]A. 1.F 2.G 3.H 4.C 5.D 6.A 7.B 8.EB. 1.profile 2.batch program work-aware program 4.copyright 5.browse 6.platform 7.kit 8.zip [Ex 4]1.formatunch3.Custompressed5.unzip6.licensed7.test-run8.page mode[Ex 5]1.T2.F3.T4.F5.F6.F7.T8.F9.F 10.T 11.T 12.T 13.F 14.T 15.F 16.T 17.F 18.F 19.F 20.T 21.F 22.FUnit 16[Ex 1]1.T2.T3.T4.F5.T6.T7.F8.T 10.F 11.T 12.F[Ex 3]1.entitled2.impractical3.paper4.major5.conveying6.eminet7.suffice8.programming languagepilers 10.to lament 11.coincide 12.successive[Ex 4]1.stumbled across2.were appalled at3.making4.was leveled5.analogous6.in futility7.confusion 8.is focused on[Ex 5]1.F2.T3.T4.T5.F6.F7.T8.T9.F 10.T 11.F 12.T 13.F 14.T第7 页共7页。

计算机专业英语第三版全部练习答案计算机专业英语教程第三版练习参考答案Unit 1[Ex 1] 1. F 2. T 3. T 4. F 5. T 6. T 7. T 8. T 9. T 10. F[Ex 2] 1. input, storage, processing, and output 2. power; speed; memory3. central processing unit4. internal; primary; memory5. keyboard; central processing unit; main memory; monitor[Ex 3] A. 1. F 2. D 3. G 4. C 5. B 6. A 7. E 8. HB. 1. user 2. monitor 3. data 4. keyboard 5. data processing6. information7. computer8. memory[Ex 4] 1. input device 2. screen, screen 3. manipulates 4. instructions 5. retrieve6. code7. hard copy8. function[Ex 5] 1. T 2. T 3. F 4. F 5. T 6. F 7. T 8. FUnit 2[Ex 1] 1. T 2. F 3. T 4. F 5. T 6. T 7. T 8. F[Ex 2] 1. sizes, shapes, processing capabilities2. supercomputers, mainframe computers, minicomputers, microcomputers3. mainframe computer4. microcomputers, storage locations5. protables, laptop computers/notebook/palm-sized computer.desktop workstations6. semiconductor7. CPU, memory, storage, devices,processing, users8. microprocessor chip[Ex 3] A. 1. C 2. A 3. H 4. I 5. E 6. F 7. G 8. B1. capacity2. device3. laptop computer4. Portable computers5. Silicon6. semiconductor7. workstation8. voltage9. RAM 10. ROM[Ex 4] 1. portable 2. access 3. main memory 4. sophisiticated programs5. processing capability6. instructions7. computation8. computer professional[Ex 5] 1. T 2. T 3. T 4. F 5. F 6. T 7. F 8. T 9. F 10. T 11. F 12. T13. T 14. TUnit 3[Ex 1] 1. T 2. F 3. T 4. T 5. T 6. T 7. F 8. F 9. T 10. F 11. T 12. F13. F 14. T[Ex 2] 1. microprocessor 2. bus 3. register 4. control unit 5. processor6. binary7. arithmetic, logical8. milliseconds, microseconds, nanoseconds.9. instruction 10. execution 11. megahertz 12. wordsize[Ex 3] A. 1. F 2. A 3. J 4. C 5. D 6. E 7. H 8. I 9. B 10. G1. Storage2. chip3. registers4. ALU5. bus6. control unit7. machine language 8. binary system 9. bits 10. computer program[Ex 4] 1. configuration 2. converts 3. data buses 4. characters5. decodes6. synchronize7. circuitry8. internal clock[Ex 5] 1. T 2. F 3. F 4. T 5. T 6. F 7. T 8. T 9. T 10 FUnit 4[Ex 1] 1. F 2. T 3. T 4. T 5. F 6. T 7. F 8. T 9. T 10. F 11. T 12. T13. F 14. F 15. T 16. F 17. T 18. F 19. T 20. F 21. T 22. F[Ex 2] 1. main memory 2. RAM 3. diskettes/floppy disks; hard disks4. chips5. parity6. expanded, extended7. monochrome8. cache 9. ROM 10. updated[Ex 3] A. 1. B 2. E 3. C 4. J 5. I 6. H 7. A 8. F 9. G 10 D1. secondary srorage2. buffer3. access4. code5. diskette6. slots7. terminals8. motherboard 9. bytes 10. screen[Ex 4] 1. desktop 2. software 3. animation 4. transferred 5. sophisticated6. compatible7. cache8. upgrade[Ex 5]1. Introduction to How Bluetooth Works1. T2. F3. F4. T2. How Bluetooth Creates a Connection5. T6. T7. T8. F9. F 10. F 11. T 12. T3. How Bluetooth Operates13. T 14. F 15. T 16. F 17. T 18. T 19. F4. Bluetooth Piconets20. T 21. T 22. TUnit 5[Ex 1]Para 1 to Para 41. T2. T3. F4. T5. F6. F7. F8. T9. T 10. TPara 5 to Para 711. F 12. T 13. FPara 8 to Para 1014. F 15. T 16. TPara 11 to Para 1417. F 18. T 19. F 20. F 21. T 22. T 23. T[Ex 2] 1. mail, courier 2. hub, star 3. Local area Network 4. packets 5. Ethernet6. kilobits per second, megabits per second, gigabits per second7. circuit switching8. reassembled9. Internet Protocol, Transmission Control Protocol 10. datagram 11. frames 12. binary, decimal[Ex 3] A. 1. C 2. E 3. B 4. F 5. A 6. D 7. H 8. GB. 1. hub 2. zipped 3. decimal 4. frame5. binary number6. Internet7. packet8. bandwidth[Ex 4] 1. forwarded 2. reassembled 3. are encapsulated 4. cables 5. bursty6. submit7. are retransmitted8. protocol[Ex 5]1. E2. A3. C4. F5. B6. D7. H8. G[Ex 6]有意为技术服务人员留下的抛弃、丢失或毁灭的数据都进入到数据接受器中远远不能覆盖绝大多数嫌疑人真正奇才所掌握的技术文件和程序1. 系统详情、扩展其性能 5. 敏感信息的人滞缓的特性和控制开发的复杂性非常巧妙的权宜之计，旨在解决很棘手的问题不能有效与他人沟通的人一个程序、数据结构或全部程序的交叉指向不合适的新闻组打免费长途电话了；通信网络，但不单指通信网络眼睛疲劳无关紧要或令人讨厌的琐碎问题不会有人发现这些漏洞的，或发现了也不会利用受人雇佣，为测试系统的安全性而攻入某个地方那种使用许多GOTO、例外或另外的“非结构的”分支构造不能定期运行适当的抑制程序某种非常友好程序的远在没有正式发行之前该技术也许不能发挥作用。

武汉微博教育整理分享—计算机英语第三版课后答案（五）练习答案e-BusinessSection A I．Fill in the blanks with the information given in the text:1．commercial; network2．catalogs; engines3．currencies; checks4．relationship-based; purses5．Signatures6．cash; token7．Public8．SymmetricII．Translate the following terms or phrases from English into Chinese andvice versa:1．user authentication 用户认证2．electronic purse 电子钱包3．information filter 信息过滤4．data integrity 数据完整性5．smart card 智能卡6．HTML 超文本标记语言7．symmetric key cryptosystem 对称密钥密码系统8．message authentication code 信息鉴定码9．unauthorized access control 未授权访问控制10．electronic catalog 电子目录11．electronic money (或cash) 电子货币12．search engine 搜索引擎13．digital signature 数字签名14．user interface 用户界面15．EFT (Electronic Funds Transfer) 电子资金转帐16．public key cryptosystem 公钥密码系统17．PDA (personal digital assistant) 个人数字助理18．hypertext link 超文本链接19．3D image 三维图像20．credit card 信用卡III．Fill in each of the blanks with one of the words given in the following list, making changes if necessary:The term electronic commerce encompasses the entire process of buying, selling, and advertising products and services using electronic communications media. But when people talk about (e-commerce) today, they're usually referring to the emerging marketplace on the Internet. (Retailers) of all kinds are now scrambling to establish themselves and reach (customers) in this new marketplace.The major obstacle to e-commerce is the problem of how to pay for (products) and services online. How can electronic (payments) be made convenient, reliable, and (secure) for consumers and retailers alike? As with every other Internet (technology), a global standard for online (transactions) must emerge beforee-commerce becomes a widely accepted (practice).The drive to establish a standard for (electronic) money is well underway. Software developers, banks, and (credit) card companies are all pushing transaction systems to (online) merchants, each betting that their system will become the (standard) way to pay for things online. As a Web (storefront) owner, you must investigate all the (options) and offer as many choices to your customers as they demand, while keeping (costs) and complexities from getting out of hand.IV．Translate the following passage from English into Chinese.A computer virus is a program tha t “infects” computer files (usually other executable programs) by inserting in those files copies of itself. This is usually done in such a manner that the copies will be executed when the file is loaded into memory, allowing them to infect still other files, and so on. Viruses often have damaging side effects, sometimes intentionally, sometimes not.A virus that propagates (传播) itself across computer networks is sometimes referred to as a “Worm”, especially if it is composed of many separate segments distr ibuted across the network. A “Trojan Horse”, though technically not a virus, is a program disguised as something useful, which when run does something equally devious (阴险的) to the computer system while appearing to do something else.计算机病毒是通过在计算机文件（通常是其他可执行程序）中插入自身的拷贝来“传染”这些文件的程序。

Unit One Computer and Computer Science计算机与计算机科学/ Section A参考答案I. Fill in the blanks with the information given in the text:1.Charles Babbage; Augusta Ada Byron2.input; output3.VLSI4.workstations; mainframes5.vacuum; transistors6.instructions; software7.digit; eight; byte8.microminiaturization; chipII. Translate the following terms or phrases from English into Chinese and vice versa:1.artificial intelligence人工智能2.paper-tape reader纸带阅读器3.optical computer光计算机4.neural network神经网络5.instruction set指令集6.parallel processing并行处理7.difference engine差分机8.versatile logical element通用逻辑元件9.silicon substrate硅衬底10.vacuum tube真空管11.数据的存储与处理the storage and handling of data12.超大规模集成电路very large-scale integrated circuit13.中央处理器central processing unit14.个人计算机personal computer15.模拟计算机analogue computer16.数字计算机digital computer17.通用计算机general-purpose computer / versatile computer18.处理器芯片processor chip19.操作指令operating instructions20.输入设备input device III. Fill in each of the blanks with one of the words given in the following list, making changes if necessary:We can define a computer as a device that accepts input, processes data, stores data, and produces output. According to the mode of processing, computers are either analog or digital. They can also be classified as mainframes, minicomputers, workstations, or microcomputers. All else (for example, the age of the machine) being equal, this categorization provides some indication of the computer’s speed, size, cost, and abilities.Ever since the advent of computers, there have been constant changes. First-generation computers of historic significance , such as UNIVAC (通用自动计算机), introduced in the early 1950s, were based on vacuum tubes. Second-generation computers, appearing in the early 1960s, were those in which transistors replaced vacuum tubes. In third-generation computers, dating from the 1960s, integrated circuits replaced transistors. In fourth-generation computers such as microcomputers, which first appeared in the mid-1970s, large-scale integration enabled thousands of circuits to be incorporated on one chip. Fifth-generation computers are expected to combine very-large-scale integration with sophisticated approaches to computing, including artificial intelligence and true distributed processing.IV. Translate the following passage from English into Chinese: 计算机将变得更加先进，也将变得更加容易使用。

Unit Five: Software ProcessUnit Five/Section AI. Fill in the blanks with the information given in the text:1. off-the-shelf1 2. exclusive2 3. cascade3 4. requirements; integration4 5. throwaway5 6. immediate; stable67. reuse-oriented; framework78. software; compromisesII. Translate the following terms or phrases from English into Chinese and vice versa:1 1. system specification 系统规格说明2 2. unit testing 单位（或单元、部件）测试3 3. software life cycle 软件生命周期（或生存周期）4 4. system validation testing 系统验证测试5 5. evolutionary development process 演化开发过程6 6. simple linear model 简单线性模型77. program unit 程序单元88. throwaway prototype 抛弃式原型99. text formatting 正文格式编排，文本格式化1010. system evolution 系统演变1111. 系统设计范例system design paradigm1212. 需求分析与定义requirements analysis and definition1313. 探索式编程方法exploratory programming approach1414. 系统文件编制system documentation1515. 瀑布模型waterfall model1616. 系统集成system integration1717. 商用现成软件commercial off-the-shelf ( 或COTS) software1818. 基于组件的软件工程component-based software engineering (CBSE)1919. 软件维护工具software maintenance tool2020. 软件复用software reuseIII. Fill in each of the blanks with one of the words given in the following list, makingchanges if necessary:There are three different types of software maintenance. Firstly, there is maintenance to repair software faults. Coding errors are usually relatively cheap to correct; design errors are more expensive as they may involve rewriting several program components. Requirements errors are the most expensive to repair because of the extensive system redesign that may be necessary. Secondly,there is maintenance to adapt the software to a different operating environment. This type of maintenance is required when some aspect of the system’s environment such as the hardware, the platform operating system or other support software changes. The application system must be modified to adapt it to cope with these environmental changes. And thirdly, there is maintenance to add to or modify the system’s functionality. This type of maintenance is necessary when the system requirements change in response to organizational or business change. The scale of the changes required to the software is often much greater than for the other types of maintenance. In practice, there isn’t a clear-cut distinction between these types of maintenance. When you adapt the system toa new environment, you may add functionality to take advantage of new environmental features.Software faults are often exposed because users use the system in unanticipated ways. Changing the system to accommodate their way of working is the best way to fix these faults.IV. Translate the following passage from English into Chinese:软件过程比较复杂，而且像所有其他的智能和创造性过程一样，依靠人们作出决定和判断。

EX11 F2 T3 T4 F5 T6 F7 T8 T9 T 10FEX21.Input hardware, storage hardware, processing hardware, output hardware2.power, speed, memory3.central processing unit4.internal, primary, memory5.keyboard, central processing unit, main memory, monitorEX3 PARTA1 F2 D3 G4 C5 B6 A7 E8 HEX3 PART B1 F2 E3 G4 B5 A6 C 7D 8 HEX41 input device2 screen3 manipulates4 instructions5 retrieve6 codes7 hardcopy8 functionEX51 T2 T3 F4 F5 T6 F7 T8 TUNIT21 T2 F3 T4 F5 T6 F7 T8 FEX21 sizes, shapes, processing capabilities2 supercomputers, mainframe computers, minicomputers, microcomputers3 mainframe computer4 microcomputer, storage locations5 portables, laptop computers, desktop workstations6 semiconductor7 CPU, memory, storage, devices, processing, users8 microprocessor chipEX3 PARTA1 C2 A3 H4 I5 E6 F7 G8 JEX3 PARTB1 capacity2 device3 laptop computer4 Portable computers5 Silicon6 semiconductor7 workstation8 V oltage, voltage9 RAM10ROMEX41 portable2 access3 main memory4 sophisticated programs5 processing capabilities6 instructions7 computation8 computer professionalEX51 T2 T3 F4 F5 F6 T7 F8 T9 T 10T 11F 12T 13 T 14 TUNIT3EX11 T2 F3 T4 T5 T6 T7 F8 F9 T 10 F 11T 12F 13F 14TEX21 microprocessor2 bus3 register4 control unit5 processor6 binary7 arithmetic, logic 8 milliseconds, microseconds9 instruction 10execution11megahertz 12wordsizeEX3 PARTA1 F2 A3 J4 C5 D6 E7 H8 I9 B 10GEX3 PARTB1 Storage2 chip3 buses4 ALU5 register6 control unit7 machine language 8 binary system9 bits 10computer programEX41 configuration2 decodes3 data bus4 characters5 converts6 synchronize7 circuitry8 internal clockEX51 T2 F3 F4 T5 F6 F7 T8 T9 F 10 FUNIT4EX11 F2 T3 T4 F5 F6 T7 F8 T9 T 10 F 11T 12T 13F 14F 15T 16F 17T 18F 19T 20F 21T 22FEX21.memory2.RAM3.diskettes, disks4.chips5.parity6.expanded, extended7.monochrome8.cache9.ROM10.updatedEX3 PART A1 B2 E3 C4 J5 I6 H 7A 8 F 9 G 10D EX3 PART B1.secondary storage2.buffer3.access4.code5.diskette6.slot7.terminals8.motherboard9.byte10.screenEX41.desktop2.software3.animation4.transferred5.sophisticatedpatible8.upgradeEX51 T2 F3 F4 T5 T6 T7 T8 F9 T 10 F 11T 12F 13F 14T 15T 16F 17F 18F 19F 20T 21T 22TUnit 5Ex1:1 T2 T3 F4 T5 F6 F7 F8 T9 T 10 T 11F 12T 13F 14F 15T 16T 17F 18T 19F 20F 21T 22T 23TEX21.mail, courier2.hub, star3.local area network4.packets5.Ethernet6.kilobits per second, megabits per second, gigabits per second7.circuit switching8.reassembled9.internet protocol, transmission control protocol10.datagrams11.frames12.binary, decimalEX3 part A1 C2 E3 B4 F5 A6 D7 H8 GEX3 part B1.hub2.zipped3.decimal4.frame5.binary number6.internet7.packet8.bandwidthEX41.forwarded2.reassembled3.are encapsulated5.bursty6.submit7.are retransmitted8.protocolEX51.IP address2.notation3.dotted-decimalputer network5.background6.shared7.geographic8.privacyExercise to the Passage for ReadingEX61.有意为维修技师使用所留2.被弃的、丢失的或损坏了的数据都进了数据桶。

Unit 5 Hobbies and Interests / System Unit课后习题答案（Keys to Task 4）1.Oral practice.Work in pairs and practise how to introduce the hobbies and interests to the other.Omitted.2.Fill in the blanks with proper words.(1)major(2)spare(3)reading(4)produced(5)programs(6)hiking(7)beauty3.Choose the best answer from the given choices.(1) C(2) B(3) D(4) C习题册答案（Keys to the exercise book）Part One: Vocabulary 词汇用所给的词或短语的正确形式填空。

Part A1.take up2.leisure3.reading4.taking part in5.such asPart B1.locate2.container3.Desktop4.digital5.secondaryPart Two: Grammar & Function 语法与功能1.在右列中找出可与左列对应的句子。

(1) C(2) D(3) B(4) A(5) E2.从A、B、C、D选项中选择正确答案。

(1) B(2) C(3) C(4) C(5) C(6) B(7) C(8) C(9) A(10) APart Three: Translation 翻译1.将下列短语翻译成英文。

(1) a basketball lover(2)from Wednesday to Sunday(3)collecting coins(4)system unit(5)electronic components(6)input and output devices2.将下列句子翻译成中文。