计算机专业英语第3次作业

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计算机专业英语Unit 3

Unit 3Text 11.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.(1)The display of the computer is also called______.Screen(2)The function of a ____ is to print the information or data on a piece of paper.printer(3)The keyboard is one of the _____devices.input(4) A modem plays an important role when you want to use the ______.internet3. Translation.(1)我是一个操作员。

I am a computer programmer.(2)什么是电子计算机？What is a electronic computer?(3)我有一个键盘。

I have a keyboard(4)It costs me 4000 Yuan to buy a computer.买一台电脑需要花费我4000元人民币。

(5)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。

(6)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。

计算机专业英语全部答案(第三版)

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。

新编计算机专业英语3选择填空解读

三、选择填空Operating system for micro, mini, and mainframe computers perform many services. These services can be classified either as“external”or“internal”.The operating system provides external services that help users start programs, manage stored data, and maintain security. You, as the computer user, control these external functions. Using a command-line, menu-driven, or GUI user interface , an operating system provides you with a way to select the programs you would like to use. The operating system also helps you find, rename, and delete documents and other data stored on disks or tapes. On many, but not all computer systems , the operating system helps you maintain security by checking your user ID(用户标识) and password , as well as protecting your data from unauthorized access and revisions(修改).The operating system provides internal services“behind the scenes”to ensure that the computer system functions efficiently . These internal services are not generally under your control , but instead are controlled by the operating system itself. The operating system controls input and output, allocates(分配) system resources, manages the storage space for programs and data, and detects equipment failure without any direction from you.A programming language provides the tools a programmer uses to create software and produce a lengthy list of instructions, called source code ,which defines the software environment in every detail-what it looks like ,how the user enters commands ,and how it manipulates data. A computer’s microprocessor understands only machine language. Therefore, instructions written in a(n)high-level language must be translated into machine language before a computer can use them.The process of translating instructions from a high-level language into machine language can be accomplished by two special types of programs: compilers and interpreters . A compiler translates all the instructions in a program as a single batch(一批) ,and the resulting machine language instructions, called object code(目标代码),are placed in a new file . Most of the program files on a distribution CD for commercial software are compiled so that they contain machine language instructions that are ready for the processor to execute.As an alternative to a compiler, an interpreter converts one instruction at a time while the program is running . An interpreter reads the first instruction, converts it into machine language, and then sends it to the microprocessor. After the instruction is executed , the interpreter converts the next instruction, and so on.Software development is concerned with creating computer programs that perform efficiently. In developing computer software, computer scientists and engineers study various areas and techniques of software design, such as the best types of programming languages and algorithms to use in specific programs, how to efficiently store and retrieve information, and the computational limits of certain software-computer combinations. Software designers must consider many factors when developing a program. Often, program performance in one area must be sacrificed for the sake of the general performance of the software. For instance, since computers have only a limited amount of memory, software designers must limit the number of features they include in a program so that it will not require more memory than the system it is designed for can supply.Software engineering is an area of software development in which computer scientists and engineers study methods and tools that facilitate the efficient development of correct, reliable, and robust computer programs. Software engineers develop software tools and collections of tools called programming environments to improve the development process. For example, tools can help to manage the many components of a large program that is being written by a team of programmers.A local area network(LAN) is a group of computers and other devices spread over a relatively limited area and connected by a communications link that enables any device to interact with any other on the network LANs commonly include microcomputers and shared (often expensive ) resources such as laser printers and large hard disks . Most (modern) LANs can support a wide variety of computers and other devices. Each device must use the proper physical and data-link protocols for the particular LAN, and all devices that want to communicate with each other on the LAN must use the same upper-level communications protocol .Although single LANs are geographically limited , separate LANs can be connected to form larger networks. Similar LANs are linked by bridges , which act as transfer points between networks；dissimilar LANs are linked by gateways(网关)，which both transfer data and convert it according to the protocols used by the receiving network.The devices on a LAN are known as nodes(节点)，and the nodes are connected by cabling(电缆) through which messages are transmitted . Nodes on a LAN can be wired together in any of basic layouts, known as bus , ring, and star.。

新编计算机专业英语3、选择填空

1 三、选择填空Page 49 Unit 3 program interface system user storage classify unauthorized control document efficiently function detect internal security password input Operating Operating system system system for for for micro, micro, micro, mini, mini, mini, and and mainframe mainframe computers computers computers perform perform perform many many many services. services. services. These These services can be classified either as “external ”or “internal ”. The operating system provides external services that help users start programs, manage stored data, and maintain security. You, as the computer user, control these external functions. Using a command-line, menu-driven, or GUI user interface , an operating system provides you an operating system provides you with a way to select the programs you would like to use. The operating system also helps you find, rename, and delete documents and other data stored on disks or tapes. On many, but not all computer systems , the operating system helps you maintain security by checking your user ID (用户标识) ) and and password , , as as as well well well as as as protecting protecting protecting your your your data data data from from unauthorized access access and and revisions (修改). The The operating operating operating system system system provides provides internal services “behind behind the the the scenes scenes ”to to ensure ensure ensure that that that the the computer computer system system system functions functions efficiently . . These These These internal internal internal services services services are are are not not not generally generally generally under under under your your control , , but but but instead instead instead are are are controlled controlled controlled by by by the the the operating operating operating system system system itself. itself. itself. The The The operating operating operating system system system controls controls input and and output, output, allocates (分配) ) system system system resources, resources, resources, manages manages manages the the storage space space for for for programs programs and data, and detects equipment failure without any direction from you. Page 70 Unit 4 convert high-level execute processor interpreter send understand command accomplish code resulting run compile create process file A A programming programming programming language language language provides provides provides the the the tools tools tools a a a programmer programmer programmer uses uses uses to to create software software and and produce a lengthy list of instructions, called source code ,which defines the software environment in every detail-what it looks like ,how the user enters commands ,and how it manipulates data. A computer’computer’s microprocessor s microprocessor understands only machine language. Therefore, instructions written in a(n) high-level language must be translated into machine language before a computer can use them. The process of of translating translating translating instructions instructions instructions from from from a a a high-level high-level high-level language language language into into into machine machine machine language language can can be be accomplished by by two two two special special special types types types of of of programs: programs: programs: compilers compilers compilers and and interpreters . . A A compiler compiler translates translates translates all all all the the the instructions instructions instructions in in in a a a program program program as as as a a a single single batch (一批) ) ,and ,and ,and the the resulting machine language instructions, called object code (目标代码),are placed in a new file . Most of the the program program program files files files on on on a a a distribution distribution distribution CD CD CD for for for commercial commercial commercial software software software are are compiled so so that that that they they contain machine language instructions that are ready for the processor to execute. As an alternative to a compiler, an interpreter converts one instruction at a time while the program is running . An interpreter reads the first instruction, converts it into machine language, and . An interpreter reads the first instruction, converts it into machine language, and then sends it to the microprocessor. After the instruction is executed , the interpreter converts the next instruction, and so on. 2 Page 89 Unit 5 manage limit performance efficient memory develop technique system development programming store program engineer area factor environment Software development is concerned with creating computer programs that perform efficiently. In developing computer computer software, software, software, computer computer computer scientists scientists scientists and and and engineers engineers engineers study study study various various various areas areas areas and and techniques of software design, such as the best types of programming l anguages and algorithms to languages and algorithms to use in specific programs, how to efficiently store and retrieve information, and the computational limits of certain software-computer combinations. Software designers must consider many factors when developing a program. Often, program performance in one area m ust be sacrificed for the sake must be sacrificed for the sake of of the the the general general performance of of the the the software. software. software. For For For instance, instance, instance, since since since computers computers computers have have have only only only a a a limited limited amount of memory, software designers must limit the number of features they include in a software designers must limit the number of features they include in a program so that it will not require more memory than the systemi t is designed for can supply. it is designed for can supply. Software Software engineering engineering engineering is is is an an an area area area of of of software software development in in which which which computer computer computer scientists scientists scientists and and engineers study methods and tools that facilitate the efficient d evelopment of correct, reliable, and development of correct, reliable, and robust computer programs. Software engineers d evelop software tools and collections of tools called develop software tools and collections of tools called programming environments to to improve improve improve the the the development development development process. process. process. For For For example, example, example, tools tools tools can can can help help help to tomanage the many components of a large program that is being written by a team of programmers. Page 116 Unit 6 computer resource node dissimilar proper transmit limited protocol communicate enable bus connect disk network convert bridge A local area network(LAN) is a group of computers and other devices spread over a relativelylimited area and connected by a communications link that enables a ny device to interact with any any device to interact with any other other on on on the the network LANs LANs commonly commonly commonly include include include microcomputers microcomputers microcomputers and and and shared shared shared (often (often (often expensive expensive expensive ))resources such such as as as laser laser laser printers printers printers and and and large large large hard hard disks . . Most Most Most (modern) (modern) (modern) LANs LANs LANs can can can support support support a a a wide wide variety variety of of computers and and other other other devices. devices. devices. Each Each Each device device device must must must use use use the the proper physical physical and and and data-link data-link protocols for the particular LAN, and all devices that want to communicate w ith each other on the with each other on the LAN must use the same upper-level communications protocol .Although single LANs are geographically limited , separate LANs can be connected t o form larger networks. Similar LANs are to form larger networks. Similar LANs are linked by bridges , which act as transfer points between networks , which act as transfer points between networks ； dissimilar LANs are linked by gateways(网关)， which both transfer data and convert it according to the protocols used by the receiving network. The devices on a LAN are known as nodes(节点)，and the nodes a re connected by cabling(are connected by cabling(电缆) through which messages are transmitted . Nodes on a LAN can be wired together in any of basic . Nodes on a LAN can be wired together in any of basic layouts, known as bus, ring, and star. , ring, and star. 。

计算机专业英语参考答案Unit (3)[3页]

Unit Three office softwareSection One Warming Up1. word2. excel3. power point4. outlookSection Two Real WorldFind InformationTaskⅠ:1.She works in the Technical support department.2.He doesn’t know how to add pictures to a document.3.He uses MS Word 2007.4.The insert pictures dialog box will appear.5.Yes, he does.Task II: 1.F 2. F 3. F 4. T 5. TWords BuildingTask Ⅰ: 1.D 2. A 3.B 4.B 5. CTask Ⅱ: 1. creation 2.operation 3.selection 4.illustration 5.appearance Task Ⅲ: 1.D 2. B 3.F 4. H 5. E 6. I 7. G 8. J 9. A 10. CCheer up Your EarsTask Ⅰ:1.department 2.document 3.operate 4.place 5.icon6.screenshot7.see8.button9.location 10.callingTask Ⅱ: 1.wrong 2. laptop 3. check 4. software system 5. outsiderTask Ⅲ: 1. A 2. C 3. B 4. C 5. CTable TalkTask Ⅰ:1.the common office software2.All companies will install this software.3.Like communication tools4.Online shopping is very popular5.be savedSection Three Brighten Your Eyes办公软件简介办公软件的发展用来解决企业用户在沟通，计算，演示，和信息存储中所遇见的基本问题，是用于商务办公中的常见软件。

《Unit 3 Information at Work Reading and Writing》作业

《Information at Work Reading and Writing》作业设计方案（第一课时）一、作业目标本次作业旨在帮助学生巩固和运用《Information at Work Reading and Writing》课程中所学的知识和技能，包括工作信息的阅读、理解和写作。

通过完成作业，学生将能够：1. 识别和获取工作相关信息；2. 准确理解和表达工作信息；3. 撰写符合工作要求的书面信息。

二、作业内容作业分为以下三个部分：1. 阅读理解：学生需阅读一篇关于工作场所的信息，并回答相关问题。

问题将涉及文章的主题、细节和作者的意图。

2. 写作练习：学生需根据所给模板撰写一份工作信息，内容包括个人基本信息、工作职责和技能要求等。

3. 小组讨论：学生需与同学进行小组讨论，分享各自的工作经验和信息处理技巧，并针对如何提高工作信息阅读和写作能力提出建议。

三、作业要求1. 独立完成作业，不得抄袭；2. 确保答案准确、完整，回答问题不得遗漏；3. 写作练习中，模板应严格按照要求填写，不得随意修改；4. 小组讨论时，需积极参与，尊重他人意见，共同解决问题。

四、作业评价1. 教师将对作业进行批改，并给出评价意见；2. 评价将包括对答案的准确性、写作内容的完整性以及小组讨论中的表现进行评价；3. 优秀作业将予以展示和表扬，以激励学生的学习积极性。

五、作业反馈部分学生将在课后收到教师对作业的评价和反馈，包括优点和需要改进的地方。

学生应认真对待评价和反馈，并在下次作业中加以改进。

同时，学生也可在课后与教师交流，就作业中遇到的问题和困惑进行沟通，以获得更好的帮助和支持。

通过本次作业，学生将进一步巩固和运用所学知识，提高工作信息的阅读和写作能力，为未来的职业发展打下坚实的基础。

同时，通过小组讨论和教师评价反馈环节，学生也将更好地了解自己的学习状况和不足，从而更好地规划自己的学习路径和提高学习效果。

作业设计方案（第二课时）一、作业目标：1. 学生能够根据具体工作场景，选择合适的信息表达方式；2. 学生能够阅读并理解相关的职场信息，并能正确书写出相应的工作报告；3. 通过作业，提高学生的英语应用能力和职场沟通能力。

计算机专业英语(第2版) (3)

Chapter ⅢSection ⅠKey Wordsintelligence [♓⏹♦♏●♓♎✞☜⏹♦] n. 智力，智能coordinate [ ☜◆♎♓⏹♓♦] vt. 调整，调节retrieve [❒♓♦❒♓] n. 找回；v. 重新得到，取得clock [ ●] n. 时钟instruction control unit 指令控制单元arithmetic and logic unit 算术逻辑单元register [ ❒♏♎✞♓♦♦☜] n. 寄存器clock speed 时钟速度megahertz [ ❍♏♈☜♒☜♦♦] n. 兆赫clock cycle 时钟周期nanosecond [ ⏹✌⏹☜◆♦♏☜⏹♎] n. 纳秒interpret [♓⏹♦☜☐❒♓♦] v. 解释，说明execute [ ♏♦♓◆♦] vt. 执行，完成计算机专业英语（第2版）40 subtract [♦☜♌♦❒✌♦] v. 减multiply [ ❍✈●♦♓☐●♓] v. 乘divide [♎♓♋♓♎] v. 除initiate [♓⏹♓☞♓♏♓♦] vt. 开始instruction set 指令集quartz crystal 石英晶体Syntax1. A processor can do nothing without a program to provide control; whatever intelligence acomputer has is derived from software, not hardware.【分析】whatever此句为被动语态；along with后跟名词或动名词，表示“连同……一起”。

【句意】如果没有程序进行控制，处理器什么都做不了。

无论计算机具有什么智能化功能都是由软件而非硬件提供的。

2. It determines which operations should be carried out and in what order.【分析】该句是由which引导的一个宾语从句，carry out意为“完成，执行，实现”。

计算机专业英语3

Unit 3 Computer Language andProgrammingSection AProgrammingLanguageI. IntroductionProgramming languages, in computer science, are the artificial languages used to write a sequence of instructions (a computer program) that can be run by a computer. Similar to natural languages, such as English, programming languages have a vocabulary, grammar, and syntax. However, natural languages are not suited for programming computers because they are ambiguous, meaning that their vocabulary and grammatical structure may be interpreted in multiple ways. The languages used to program computers must have simple logical structures, and the rules for their grammar, spelling, and punctuation must be precise.Programming languages vary greatly in their sophistication and in their degree of versatility. Some programming languages are written to address（处理）a particular kind of computing problem or for use on a particular model of computer system. For instance, programming languages such as FORTRAN1 and COBOL2 were written to solve certain general types of programming problems—FORTRAN for scientific applications, and COBOL for business applications. Although these languages were design to address specific categories of computer problems, they are highly portable(可移植), meaning that they may be used to program many types of computers. Other languages, such as machine languages, are designed to be used by one specific model of computer system, or even by one specific computer in certain research applications. The most commonly used programming languagesare highly portable and can be used to effectively solve diverse types of computing problems. Languages like C , PASCAL and BASIC fall into(属于) this category.II. Language TypesProgramming languages can be classified as either low-level languages or high-level languages. Low-level programming languages, or machine languages, are the most basic type of programming languages and can be understood directly by a computer. Machine languages differ depending on the manufacturer and model of computer. High-level languages are programming languages that must first be translated into a machine language before they can be understood and processed by a computer. Examples of high-level languages are C, C++6, PASCAL, and FORTRAN. Assembly languages are intermediatelanguages that are very close to machine languages and do not have the level of linguistic sophistication ex h ibited by other high-level languages, but must still be translated into machine language.1. Machine LanguagesIn machine languages, instructions are written as sequences of 1s and 0s, called bits, that a computer can understand directly. Aninstruction in machine language generally tells the computer four things: (1) where to find one or two numbers or simple pieces of data in the main computer memory (Random Access Memory, or RAM), (2) a simple operation to perform, such as adding the two numbers together, (3) where in the main memory to put the result of this simple operation, and (4) where to find the next instruction to perform. While all executable programs are eventually read by the computer in machine language,they are not all programmed in machine language. It is extremely difficult to program directly in machine language because the instructions are sequences of 1s and 0s. A typical instruction in a machine language might read 10010 1100 1011 and mean add the contents of storage register A to the contents of storage register B.2. High-Level LanguagesHigh-level languages are relatively sophisticated sets of statements utilizing words and syntax from human language. They are more similar to normal human languages than assembly or machine languages and are therefore easier to use for writing complicated programs. These programming languages allow larger and more complicated programs to be developed faster. However, high-level languages must be translated into machine language by another program called acompiler before a computer can understand them. For this reason, programs written in a high-level language may take longer to execute and use up(用完) more memory than programs writtenin an assembly language.3. Assembly LanguagesComputer programmers use assembly languages to make machine-language programs easier to write. In an assembly language, each statement corresponds roughly to one machine language instruction. An assembly language statement is composed with the aid of（借助于，帮助）easy to remember commands. The command to add the contents of storage register A to the contents of storage register B might be written ADD B, A in a typical assembly language statement. Assembly languages share certain features with machine languages. For instance, it is possible to manipulatespecific bits in both assembly and machine languages. Programmers use assembly languages when it is important to minimize the time it takes to run a program, because the translation from assembly language to machine language is relatively simple. Assembly languages are also used when some part of the computer has to be controlled directly, such as individual dots on a monitor or the flow of individual characters to a printer.III. Classification of High-Level LanguagesHigh-level languages are commonly classified as procedure-oriented, functional, object-oriented, or logic languages. The most common high-level languages today are procedure-oriented languages. In languages, one or more related blocks of statements that perform some complete function are grouped together into a program module, orprocedure, and given a name such as "procedure A." If the same sequence of operations is needed elsewhere in the program, a simple statement can be used to refer back to the procedure. In essence, a procedure is just a mini-program. A large program can be constructed by grouping together procedures that perform different tasks. Procedural languages allow programs to be shorter and easier for the computer to read, but they require the programmer to design each procedure to be general enough to be use in different situations.Functional languages treat procedures like mathematical function and allow them to be processed like any other data in a program. This allows a much higher and more rigorous level of program construction, Functional languages also allow variables—symbols for data that can be specified and changed by the user as theprogram is running—to be given values only once. This simplifies programming by reducing the need to be concerned with the exact order of statement execution, since a variable does not have to be redeclared, or restated, each time it is used in a program statement. Many of the ideas from functional languages have become key| parts of many modem procedural languages.Object-oriented languages are outgrowths of functional languages. In object-oriented languages, the code used to write the program and the data processed by the program are grouped together into units called objects, Objects are further grouped into classes, which define the attributes objects must have. A simple example of a class is the class Book. Objects within this class might be Novel and Short Story. Objects also have certain functions associated with them, calledmethods. The computer accesses an object through the use of one of the object's methods. The method performs some action to the data in the object and returns this value to the computer. Classes of objects can also be further grouped into hierarchies, in which objects of one class can inherit methods from another class. The structure provided in object-oriented languages makes them very useful for complicated programming tasks.Logic languages use logic as their mathematical base. A logic program consists of sets of facts and if-then rules, which specify how one set of facts may be deduced from（推断）others, for example: If the statement X is true, then the statement Y is false.In the execution of such a program, an input statement can be logically deduced from other statements in the program. Many artificial intelligence programs arewritten in such languages.IV. Language Structure and Components Programming languages use specific types of statements, or instructions, to provide functional structure to the program.A statement in a program is a basic sentence that expresses a simple idea—its purpose is to give the computer a basic instruction. Statements define the types of data allowed, how data are to be manipulated, and the ways that procedures and functions work. Programmers use statements to manipulate common components of programming languages, such as variables and macros(mini-programs within a program). Statements known as data declarations give names and properties to elements of a program called variables. Variables can be assigned different values within the program. The properties variables can have are called types, and they includesuch things as what possible values might be saved in the variables, how much numerical accuracy is to be used in the values, and how one variable may represent a collection of simpler values in an organized fashion, such as a table or array. In many programming languages, a key data type is a pointer. Variables that are pointers do not themselves have values; instead, they have information that the computer can use to locate some other variable—that is, they point to another variable.An expression is a piece of a statement that describes a series of computations to be performed on some of the program's variables, such as X+Y/Z, in which the variables are X, Y, and Z and the computations are addition and division. An assignment statement assigns a variable a value derived from(得自) some expression, while conditional statements specifyexpressions to be tested and then used to select which other statements should be executed next.Procedure and function statements define certain blocks of code as procedures or functions that can then be returned to later in the program. These statements also define the kinds of variables and parameters the programmer can choose and the type of value that the code will return when an expression accesses the procedure or function. Many programming languages also permit minitranslation programs called macros. Macros translate segments of code that have been written in a language structure defined by the programmer into statements that the programming language understands.V. HistoryProgramming languages date back almost to the invention of the digital computer in the 1940s. The first assemblylanguages emerged in the late 1950s with the introduction of commercial computers. The first procedural languages were developed in the late 1950s to early1960s;FORTRAN, created by John Backus, and then COBOL, created by Grace Hopper. The first functional language was LISP, written by John McCarthy in the late 1950s. Although heavily updated, all three languages are still widely used today.In the late 1960s, the firstobject-oriented languages, such as SIMULA, emerged. Logic languages became well known in the mid 1970s with the introduction of PROLOG , a language used to program artificial intelligence software. During the 1970s, procedural languages continued to develop with ALGOL, BASIC, PASCAL, C, and Ada. SMALLTALK was a highly influential object-oriented language that led to the merging of object-oriented and procedurallanguages in C++ and more recently in JAVA . Although pure logic languages have declined in popularity, variations have become vitally important in the form of relational languages for modem databases, such as SQL.。

电大计算机专业英语作业3答案.

计算机专业英语
第三次作业
一、Vocabulary(词汇)
（一）Translate the following words and expressions into Chinese。(写出下列词组的汉语。）
1.transmission media 2.bus network
1、传输介质 2、总线型网络 3、管理信息系统
9．hacker
10．firewall
i．图形
j．黑客
1.d 2.c 3.f 4.g 5.a 6.h 7.i 8.b 9.j 10.e
四、Fill in the blanks with suitable words or expressions from the list given below，and change the form where necessary．(从下面方框中选择合适的词或表达，以其适当的形式填空) traffic facilitate network protocol message transmission packet destination
1.c 2.g 3.a 4.f 5.d. 6.b 7.i 8.e 9.i
(二 ) 1．router a．音频
2．hub
3．switch 4．Multimedia 5．audio 6．video 7．graphics 8．Image
b．图像
c．集线器 d．路由器 e．防火墙 f．交换机 g．多媒体 h．视频
15. security patch
16. IMS
(Information Management Strateg )
16、信息管理策略
一、Vocabulary(词汇)
• ( 二 )Fill in the blanks with the corresponding English abbreviations．(根据汉语写出相应的英语缩写。) • • • • • • 1.局域网 2.广域网 3.万维网 4.超文本链接标示语言 5.文件传送[输]协议 6.传输控制协议/网际协议 1、LAN 2、WAN 3、WWW

《Unit 3 Information at Work Reading and Writing》作业

《Information at Work Reading and Writing》作业设计方案（第一课时）一、作业目标本次作业旨在帮助学生巩固和运用在《Information at Work Reading and Writing》课程中所学的知识和技能，提高他们的阅读和写作能力，同时培养他们在实际工作中运用英语的能力。

二、作业内容1. 阅读练习：学生需要完成一篇与工作相关的文章阅读理解，并回答相关问题。

文章内容应涵盖工作场所的信息，如工作职责、工作流程、团队合作等。

问题应涉及文章中的关键信息点，以帮助学生理解文章内容。

2. 写作任务：学生需要根据他们在课堂上所学到的知识，撰写一篇关于他们理想的工作环境的短文。

短文应包括工作职责、工作流程、团队合作等方面的内容，并使用所学到的英语表达方式进行描述。

三、作业要求1. 作业应独立完成，不得抄袭或使用参考资料。

2. 作业应按照题目要求完成，确保准确性和完整性。

3. 学生在完成作业后，应将作业提交至教师指定的平台或邮箱，确保提交的作业能够被正确评估。

四、作业评价1. 教师将根据学生的作业完成情况，包括准确性、完整性、语言表达等方面进行评价。

2. 教师将根据学生在课堂上的表现和参与度，给予一定的加分或鼓励。

3. 评价结果将作为学生课程成绩的一部分，以激励学生积极参与课堂活动和完成作业。

五、作业反馈部分教师将在作业评价后向学生提供反馈，包括对作业的整体评价、存在的问题和建议的改进措施。

学生可以就作业中的疑问或困难向教师提出，教师将给予解答和指导。

此外，学生还可以通过作业反馈了解自己在英语阅读和写作方面的优势和不足，从而更好地规划后续的学习和提高。

在阅读练习部分，教师可能会发现学生在理解文章时存在一些困难，例如对于专业术语或特定工作场景的词汇不熟悉。

针对这些问题，教师可以在下一次课堂上加强相关词汇的教学，以帮助学生更好地理解文章内容。

在写作任务部分，教师可能会发现学生在描述工作环境时存在一些表达上的问题，例如语法错误、用词不当等。

计算机专业英语作业及答案

计算机专业英语作业答案（供参照）计算机专业英语作业1第 1－3 章作业一．Vocabulary( 词汇 )(一 )．Translate the following words and expressions into Chinese(写出以下词组的汉语。

) 1． central processing unit （ CPU）中央办理器 2.title bar标题栏3． operating system操作系统4． personal computer个人计算机5． menu bar菜单栏6．desk publishing桌面排版7． electronic spreadsheet电子表格8． hard disk硬盘9． database数据库10． Cursor光标(二 )．Fill in the blanks with the corresponding English abbreviations.(依据汉语写出相应的英语缩写。

)1．随机储存器RAM2．只读储存器ROM3．传输控制协议TC P4．数字视频光盘DVD5．通用串行总线USB6．计算机协助设计CAD7．计算机协助制造CAM8．中央办理器CPU(三 )．Translate the following Chinese into English.(依据汉语写出相应的英语。

)1．键盘keybord2．鼠标mouse3．扫描仪scanner4．打印机printer5．输入input6．输出output7．显示器monitor8．储存器storage9．数据库database 10．操作系统operating system11．应用软件application software 12．字办理器word processor13．网络阅读器web browser二．Tell whether the following statements are true(T) or false(F)判.(断正误。

《Unit 3 Information at Work Reading and Writing》作业

《Information at Work Reading and Writing》作业设计方案（第一课时）一、作业目标本次作业旨在帮助学生巩固和运用在《Information at Work Reading and Writing》课程中所学的知识和技能，提高他们的阅读和写作能力，以及培养他们在职场环境中有效获取和传递信息的能力。

二、作业内容1. 阅读理解：学生需要完成一份与课程主题相关的阅读理解练习，包括选择题、简答题等不同题型。

练习材料可以选择教材中的相关文章，也可以自行选择适合的职场英语阅读材料。

要求学生在规定时间内完成，并总结文章主要内容。

2. 写作任务：学生需要撰写一篇与课程主题相关的应用文写作，如工作邮件、会议记录、报告等。

要求学生在写作过程中注意语法、拼写、标点等细节，并在完成后检查修改。

三、作业要求1. 作业完成后，学生需提交纸质版或电子版作业，包括阅读理解练习的答案和写作文章的原稿。

2. 提交的作业应符合格式要求，清晰整洁，易于批改。

3. 作业应围绕课程主题，与职场英语应用紧密相关。

4. 鼓励学生在完成作业过程中积极查阅资料，提高自主学习能力。

四、作业评价1. 教师将对作业进行批改，给出分数或评价，并针对学生的问题进行反馈和指导。

2. 评价将包括对阅读理解练习的理解程度、写作任务的完成质量等方面。

3. 对于完成优秀的作业，将给予表扬和展示机会。

五、作业反馈部分1. 教师将根据学生的作业情况，提供针对性的反馈和建议，包括语法、词汇、表达等方面的问题，以及需要改进和提高的地方。

2. 学生将收到反馈后，可根据建议进行修改和完善，进一步提高自己的英语阅读和写作能力。

3. 此外，教师还将收集学生的作业问题，作为教学反思和改进的依据，以更好地满足学生的需求和提升教学效果。

通过本次作业，学生将能够巩固和运用所学知识，提高自己的职场英语应用能力，为未来的职业生涯做好准备。

同时，教师也能通过作业反馈不断优化教学内容和方法，提高教学质量。

国开电大计算机专业英语阅读(河北)形考三参考答案

a.个人数字助手
b.处理速度
【答案】：个人数字助手
题目11.Soft Update的中文释义为（）
a.软件升级
b.桌面应用
【答案】：软件升级
题目12.file system的中文释义为（）
a.文件系统
b.桌面应用
【答案】：文件系统
题目13.high performance的中文释义为（）
a.高性能
b.文件系统
题目4.GUI的中文释义为（）
a.图形用户界面
b.诊断例程
【答案】：图形用户界面
题目5.DDE的中文释义为（）
a.动态数据交换
b.系统配置
【答案】：动态数据交换
题目6.OLE的中文释义为（）
a.对象链接和嵌入
b.安全检查
【答案】：对象链接和嵌入
题目7.mainframe computers的中文释义（）
【答案】：高性能
题目14.Blue Screen of Death的中文释义为（）
a.蓝屏错误
b.高性能
【答案】：蓝屏错误
题目15.non-synchronous的中文释义为（）
a.非同步
b.桌面应用
【答案】：非同步
题目16.open source的中文释义为（）
a.开放源代码
b.文件系统
【答案】：开放源代码
对
错
【答案】：对
题目22.pull-down menu的中文释义为“下拉菜单”
对
错
【答案】对
题目23.table of contents的中文释义为“目录”
对
错
【答案】：对
题目24.DialogBox的中文释义为“对话框”
对

Unit 3 Computers 作业

Unit3 Computers 作业Ⅰ.阅读理解Banks view online banking as a powerful “valueadded” tool to attract and keep new customers while helping to eliminate costly paper handling or teller (出纳员) interactions in an increasingly competitive banking environment.Today, most large national banks, many local banks and credit unions offer some form of online banking, variously known as PC banking, home banking, electronic banking or Internet banking. Online banks are sometimes referred to as “bricktoclick” banks, both to tell them from “bricktomortar” banks that haven't yet offered online banking, as well as from “virtual” (虚拟) banks that have no physical branches or tellers whatsoever.The challenge for the banking industry has been to design this new service channel in such a way that its customers will readily learn to use and trust it. Most of the large banks can now offer fully safe, fully functional (功能的) online banking for free or for a small cost. As more banks succeed online and more customers use their sites, fully functional online banking will likely become as commonplace as automated teller machines (ATM).Online banking has a lot of advantages. Unlike your corner bank, online banking sites never close; they're at hand 24 hours a day, seven days a week and they're a mouse click away. If you're out of state or even out of the country when a money problem appears, you can log on instantly to your online bank and take care of business. Online bank sites generally carry out and confirm deals at or quicker than ATM processing speeds. Many online banking sites now offer fashionable tools to help you manage all of your valuable items more effectively.1．The underlined word “eliminate” in the first paragraph probably means “________”.A．keep B．removeC．raise D．improve2．What is the challenge for the online banking industry according to the text?A．To make online banking attractive.B．To open new services all over the world.C．To offer online banking for free.D．To take care of business 24 hours a day.3．From the text we can conclude that ________.A．“bricktoclick” banks are in fact another kind of physical banksB．the function of a “bricktoclick” bank is as common as that of an A TMC．a “bricktomortar”bank is no better than a virtual oneD．customers can deal with their banking by a mouse click4．What would be the best title for this text?A．Banking of Various FormsB．Improvement of Banking IndustryC．Development of Online BankingD．Functions of the “BricktoClick”Bank答案与解析本文介绍网上银行这一强大的增值工具，用它来吸引和维护新的客户。

2020-2021学年三都民中计算机协会高三英语第三次联考试题及答案解析

2020-2021学年三都民中计算机协会高三英语第三次联考试题及答案解析第一部分阅读（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项AArtificial intelligence (Al) is practically everywhere today. There are so many products out there which use Al. Some are being developed, some are already in use, and some failed and are being improved, so it’s very difficult to name a few of them and regard them as the best.ViIt is an Al personal trainer which is mainly concerned with fitness and coaching. It, however, requires the use of bio-sensing earphones and other fitness tracking equipment! It can play your favourite music while you work out and all you have to worry about is the exercise you're doing.Deep TextDo you ever wonder how an ad appears suddenly just when you are looking for something similar? This is because of Deep Text. It uses real-time consumer information to produce data which in turn is used to target consumers. Thus, if you search online for flight tickets fromBangaloretoDelhi, it is very likely that an ad relating to hotels inDelhiwill soon follow.Hello EggIf you live alone and miss your mother because you always miss your breakfast or don’t know what to eat for dinner, then Hello Egg is exactly what you are looking for. A very healthy choice of the 2-minute noodles and oats, Hello Egg provides you with a detailed weekly meal plan about the needs of your body. It is truly a modern AI-powered home cooking tool for the young.WordsmithYou can put Mr. Smith into your Microsoft Excel using their free API, and let it write up detailed analysis of the stories behind your numbers. It can produce detailed reports on thousands of pages of spreadsheets in seconds.1. What can we learn about Vi from the text?A. It is an AI music player.B. It is a bio-sensing earphone.C. It doesn't work without bio-sensing earphones.D. It can make you more energetic while you work out.2. Which can help you improve cooking skill?A. Deep Text.B. Vi.C. Wordsmith.D. Hello Egg.3. What can Wordsmith do for us?A. Produce a detailed report.B. Provide us with a detailed meal plan.C. Book a ticket ahead of time.D. Offer us information on hotels for traveling.BA student had to get his long hair cut off in a middle school in GuangDong Province. It was talked a lot among teachers and students.In fact, all schools have their own rules. In most schools, boy students are not allowed to have long hair while girls are not allowed to dye their hair. And most school rules say that students should wear their school uniforms at school. And students must obey these rules so that they can get healthy development at school.But some students have disagreements. They think that boy students having long hair doesn't mean that they are not good students. They want to show their own personality. They think that they would look cool too if they had long hair and the hairstyles like their favorite stars.A girl student thought that she would look much more beautiful if she had brown hair. So she had her dark hair dyed brown one day. When she went back to school the next day, the teacher was very angry with her. She said that she worked hard at her lessons and did well in every subject. She just didn't know why the teacher didn't allow her to dye her hair while women teachers can.It is not wrong for teenagers to love stars' hairstyles or wear their favorite clothes. However, a school has its own rules for all the students to obey so that the school can be in good order. Students should not break the rules at school.4. What aren't boy students allowed to do in most middle schools according to this passage?A. To have long hair.B. To wear uniforms.C. To like famous stars.D. To show their own personalities.5. Why did the girl make her hair brown?A. Because she wanted to be cool.B. Because she thought that she would look much more beautiful.C. Because she wanted to make her teacher angry.D Because women teachers dyed their hair.6. What does the writer think of these school rules?A. The students should be against them.B. They are bad for students.C. They can make schools in good order.D. They can't make students grow healthily.7. What is the passage mainly about?A. Hair styles and clothes.B. Schoolboys and schoolgirls.C. Students and famous stars.D. School rules.CIt’s become an accepted part of keeping up to date with extended family and friends, but if schoolchildren were in their parents’ shoes, the majority wouldn’t share posts of their sons and daughters online. Over 55% said they would not upload news about, or images of, their children to their social media feeds, according to survey of over 16,000 pupils by Votes for Schools.While some were concerned about being embarrassed or the longevity of content which could remain online indefinitely, others expressed concern about their personal data beingcompromised. One of the pupils surveyed said, “Although our parents mean well, sometimes theconsequenceof a post can be disastrous.”In response to thesurvey, children’s mental health charity Place2Be and law firm Mishcon de Reya have produced three films ahead of the Christmas holidays – the best period for parental oversharing.In one video, about safety online, 10-year-old Adavan said, “If you share anything with your family, you know who’s going to see it. But if you share it publicly, there are millions of people who can see your picture.”Joe Hancock, a security lead at Mishcon de Reya, encouraged parents to share wisely. “Simple steps, such as checking your privacy settings and asking others not to share content of your children on their accounts if they have not updated their privacy settings, are a good start. And, as we found out from the children during filming, having their permission is key,” he said.The study marks a shift away from the usual debate about teaching children to use the Internet safely. Sandra Davis, head of the law firm’s family department, said, “Children are the experts on the real and immediate impact of sharenting（晒娃）– the full extent of which we cannot know yet. We must ensure we listen to children and taketheir views into consideration now in order to avoid any unintendedconsequences further down the line.”8.What’s most pupils’ attitude towards sharing posts about children?A. Skeptical.B. Unconcerned.C. Tolerant.D. Unwilling.9.What does the author intend to do in Paragraph 2?A. Summarize the previous paragraph.B. Provide some advice for parents.C. Predict the consequence of sharing posts.D. Give reasons for the result of the survey.10.What should parents first pay attention to according to Joe Hancock?A. Safety.B. Consequence.C. Wisdom.D. Health.11.What can we learn from the last paragraph?A. Parents should take children’s opinions into account.B. Parents should teach children to use the Internet safely.C. Children must make sure to listen to their parents.D. Children should avoid unintended consequences of sharenting.DOn March 18, 34-year-old Lance Karlson was walking on the beach and looking for somewhere toswim in Geographe Bay when he saw what he thought was a stingray (黄貂鱼) leap from the water.Realizing the creature was, in fact, an octopus (章鱼), he started filming it — just in time for the angry octopus to launch itself at him. He immediately felt a sharp pain across his left arm, followed by a second strike across his neck and upper back. His goggles (护目镜) fogged and the water around him turned dark with what he thought might have been octopus ink as he struggled back toward the shore."I was confused — it was more of a shock than a fright," said Karlson, "I might have hit on its home." Within a minute, a perfect imprint of an octopus tentacle (触手) appeared on Karlson's neck and back.A former volunteer lifeguard, Karlson rushed back to his hotelroom to find something acidic to put on the wound. All his family could grab was Coca-Cola, which his wife poured over his back and the pain disappeared."The pain went away and more than anything since then, it's been more the physical hit that was painful.... The imprint on my neck is more from the physical hit, and I guess it makes complete sense when you look at the video I took," he said.Karlson said he'd never seen an octopus that close before and watched Netflix documentary "My OctopusTeacher" after the incident to learn more about the species."They are beautiful creatures and I really hope this promotes more interest in octopuses as opposed to fear of them. I think this is a fascinating creature with clearly some very strong emotions just like we do as humans," he added.12. When did the octopus attack Karlson?A. When he was swimming in the bay.B. When he was shooting the octopus.C. When he was looking for some fish.D. When he was fighting against the octopus.13. What plays an essential role in reducing Karlson's pain?A. The lifeguard's timely help.B. Karson's wife's quick action.C. The family members' efforts.D. Karlson’s knowledge of first aid.14. What does Karlson learn from his experience?A. The octopus is dangerous.B. People should get away from the octopus.C. People need know more about the octopus.D. The physical hit from the octopus is painful.15. Which of the following might be the best title?A. Pain from Strong AttackB. First Aid for Octopus' StrikeC. Face to Face with Angry OctopusD. Under Sea with Dangerous Creature第二节（共5小题；每小题2分，满分10分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。

2020届三都民中计算机协会高三英语第三次联考试题及答案解析

2020届三都民中计算机协会高三英语第三次联考试题及答案解析第一部分阅读（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项AWelcome to join our Summer Youth Language Program to improve English language skills, make new friends worldwide. and have a good time here! The program capacity is limited, so if you are interested, you should register as soon as possible.Dates andCostsAll programs require a $ 100 nonrefundable deposit (不退还的押金)to reserve a spot in the program.June 15—July 16 5-week program：( $ 1920)July 20—August 20 5-week program：( $ 1920)June 15—August 20 10-week program：( $ 3620)You can also study with us for shorter periods. 4-week programs cost $ 1580 tuition and 3-week programs cost $ 1240.DiscountsThere is a 10% discount for each additional family member!Appropriate AgesRecommended Ages：14 and olderRestrictions：Students who are younger than 16 must have a parent or guardian with them.Program ScheduleIn the morning, you will join the all-aged Intensive English classes from 9：00 am to 2：00 pm, Monday to Thursday, where they can meet other students from worldwide. In the afternoonfrom 2 to 3 pm, we will have fun after-school activities, like soccer in the Park, visit toScienceMuseumand story writing competition.Items Students Should BringClothes：Shirts, a jacket, long pants ,a swimsuit and comfortable shoes, etc.Other personal items：Camera phone? plug adapter, photos of friends/family.Study materials：Notebooks, pens, and pencils.Airport Safe Items：Don't bring foods and snacks, or they'll be charged before you board the airport.1. How much will be charged if you and your brother join in a 3-week program?A. $ 1920,B. $ 2356.C. $3002.D. $ 3620.2. What will participants do at 2：30 pm on Monday?municate with foreign students.B. Attend intensive English classes.C. Join in some interesting activities.D. Talk with their parents on the phone.3. Why should students avoid bringing foods and snacks?A. To save space for their luggage.B. To protect the environment.C. To avoid any unwanted fees.D. To follow the rules of the airport.BMany teens may feel anxious sometimes. It’s the kind of nervousness that makes you bite your nails before a big test. We spend more time online than we should. We feel good about ourselves or bad based on how many Likes and Followers we get on social media. Young people are developing a false view of life.On the screen, we see what people want to show us. People usually only post photos where they are looking their best. They are surrounded by friends and seem that they are having a great time. No one seems sad or lonely. In short, life isfabulous. But sooner or later, our young people compare their real life to it. They find that theirs doesn’t seem as fun or exciting and grow worried that they may be missing out.No wonder teachers are reporting more anxious students. It’s reported that a lot more college students feel ―overwhelming anxiety. The percentage jumped from 50% in 2011 to 62% in 2016. Anxiety is now the most common mental-health problem in my country. It affects nearly one-third of teens and adults.Certainly, we can’t blame it on social media alone. We expect toomuch from our children and a lot of these expectations aren’t reasonable. Their schedules are packed with sports, clubs and homework. They don’t have enough free time. We want our children to succeed, and we don’t care how much it costs.As parents, we must have more balance. On one hand, we push too hard, and on the other hand, we make life too easy for children. We shouldn’t and can’t promise our children that they will always be happy. We shouldn’t try to protect them from the problems of everyday life. Let them solve the problems in person.4. What is the text mainly about?A. What causes teens’ nervousness.B. How to deal with teens’ anxiety.C. What a view of life means to people.D. How to treat social media appropriately.5. What does the underlined word “fabulous” in paragraph 2 mean?A. Wonderful.B. Encouraging.C. Anxious.D. Doubtful.6. Why does the author mention the numbers in paragraph 3?A. To draw teachers’ attention.B. To show teachers’ mental problems.C. To present the seriousness of teens’ anxiety.D. To show adults have more problems than teens.7. What should parents do to help their children out?A. Try to meet their expectations.B. Help them with their homework.C. Give them more free time to play sports.D. Allow them to solve their own problems in life.CWhen Alex Linwas 11 years old, he read an alarming article in the newspaper, which said that people were burying old computers in backyards, throwing TVs into streams, and dumping (丢弃) cell phones in the garbage. This was dangerous because e-waste contains harmful chemicals that can leak into the environment, getting into crops, animals, water supplies and people.Alex was really worried and decided to make it next project for WIN-the Westerly Innovations Network. Alex and six of his friends had formed this organization to help solve community problems two years before.But what could they do about this project with e-waste? The team spent several weeks gathering information about the harmful chemicals in e-waste and their effects on humans. They learned how to dispose(处置) of e-waste properly and how it could be recycled. Then, they sent out a Survey and found only one in eight know what e-waste was, let alone how to properly dispose of it.Alex and his friends went into action. They advertised in the local newspaper and distributed notices to students, asking residents to bring their unwanted electronics to the school parking lot. The drive lasted two days, and they collected over 9, 500 kilograms of e-waste. The next step was to set up a long-term e-waste drop-off center for the town. After some research, they’d learned that reusing is the best way to deal with electronic devices and it is seven times more efficient than recycling. So, they began learning to retrofit (翻新) computers themselves and distributed them to students who didn’t have their own. In this way, they could help students in the area and protect the environment at the same time.For a lasting solution to e-waste, the drop-off center wasn’t enough. Lawswould have to be passed. In 2016,WIN helped push for an e-waste bill in their town, which required companies that manufactured or sold electronics to take back e-waste. The bill clearly forbids the dumping of e-waste. Because of the work of WIN, more and more people, like Alex and his team, are getting the message about safe disposal of e-waste. As Alex says, “Today’s technology should not become tomorrow’s harmful garbage.”8. What was Alex’s worry after he read the article?A. The littering of e-waste.B. The recycling of plastic.C. The change of environment.D. At 11 p.m. on Monday.9. What did Alex do to start the project?A. Set up WIN.B. Collect information.C. Ask friends for help.D. The overuse of old computer.10. Which can best describe the way Alex and his team did their work?A. Traditional.B. Competitive.C. Scientific.D. Convenient.11. What message does the story convey?A. There is no end to perfection.B. success comes through failure.C. Every positive attitude has a reward.D. young people can make a big difference.DThermoelectric generators turn waste heat into electricity without producing greenhouse gas emissions, like a free lunch. But the high cost of these devices has prevented their widespread use. Now, researchers have found a way to make cheap thermae-lectrices that work just as well. The work could pave the way for greener car engines, and other energy-generating devices.“This looks like a very smart way to realize high performance,” says Li-Dong Zhao, a materials scientist. He notes there are still a few more steps before these materials can become high-performing. However, he says, “This will be used in the not too far future.”Thermoelectrics are semiconductor devices placed on a hot surface. That gives them a hot side and a cool side. If a device allows the hot side to warm up the cool side, the electricity stops flowing. A device’s success at preventing this, as well as its ability to conduct electrons, feeds into a score known as the figure of merit, or ZT.Researchers have produced thermoelectric materials with increasing ZTs. The record came in 2014 when Mercouri Kanatzidis came up with a tin selenide with a ZT of 3.1. Yet the material was too fragile to work with. “For practical applications, it’s a non-star-ter,” Kanatzidis says.Getting through that door will still take some time. The tin selenide the team makes is mixed with Na,creating a “p-type” material that conducts positive charges. To make working devices, researchers also need an “n-type” version to conduct negative charges.Zhao’s team is now working on making an n-type version. Once successful, researchers should have a clear path to making a new generation of super-efficient thermoelectric genera-tors. Those could be installed everywhere from automobile exhaust pipes to water heaters and industrial smelters toscavengesome of the 65% of fossil fuel energy that winds up as waste heat.12. The first paragraph wants to tell us________.A. The wide use of thermoelectric generatorsB. The devices of current thermoelectric generatorsC. The reason why researchers make cheap thermoelectricsD. The greener car engines that contribute to environmental protection13. How does Li-Dong Zhao feel about cheap thermoelectric generators?A. Indifferent.B. Optimistic.C. Critical.D. Worried.14. What do you know about the research in 2014 from paragraph 4 and 5?A. It was far from a success for practical applications.B. A tin selenide with a ZT of 3.1 can be easy to work with.C. Researchers made an “n-type” version to make working devicesD. A “p-type” material made from the tin selenide conducts negative charges15. What does the underlined word “scavenge” in the last paragraph mean?A. Recycle.B. Produce.C. Clean.D. Increase.第二节（共5小题；每小题2分，满分10分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。

2020届三都民中计算机协会高三英语第三次联考试卷及参考答案

2020届三都民中计算机协会高三英语第三次联考试卷及参考答案第一部分阅读（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项ALost cities that have been foundThe White CityIn 2015, a team of explorers to Honduras in search of"the Lost City of the Monke God"led to the discovery of the White City. They found the ruins in the Mosquitia region of the Central American country which is known for poisonous snakes, vicious jaguars and deadly insects. It is believed that local people hid here when the Spanish conquerors(征服者) occupied their homeland in the16th century.Canopus and HeracleionModern researchers were teased by the ancient writings about the Egyptian cities Canopus and Heracleion-where Queen Cleopatra often visited. But the cities weren’t found until 1992, when a search in Alexandria waters found that the two cities had been flooded for centuries. Artifacts(史前器物) showedthat the cities once highly developed as a trade network, which helped researchers piece together more about the last queen of Egypt. Machu PicchuA Yale professor discovered "the Lost City in the Clouds"in 1911. A combination of palaces, plazas, temples and homes, Machu Picchu displays the Inca Empire at the height of its rule. The city, which was abandoned in the 16th century for unknown reasons,was hidden by the local people from the Spanish conquerors for centuries keeping it so well preserved.TroyThe ancient city of Troy in homer's The Iliad was considered a fictional setting for his characters to run wild. But in 1871, explorations in northwestern Turkey exposed nine ancient cities layered (层叠) on top of each other, the earliest dating back to about5,000 years before. It was later determined that the sixth or seventh layer contained the lost city of Troy and that it was actually destroyed by an earthquake, not a wooden horse.1.Why did people hide in the White City in the 16th century?A.To survive the warB.To search for a lost city.C.To protect their country.D.To avoid dangerous animals2.Which of the following was related to a royal family member?A.The White CityB.Canopus and HeracleionC.Machu PicchuD.Troy3.What can we learn about Troy?A.It was built by Homer.B.It consisted of nine citiesC.It had a history of 5,000 yearsD.It was ruined by a natural disaster.BThe English language is changing, and you are responsible! Whether we consider changes in grammar, spelling, pronunciation, or the very vocabulary of the language, you have played your part and continue to do so.When we first learned basic grammar and spelling, perhaps in elementary school, we might have gotten the impression that these things were sacred. The rules that apply to such things might have been presented as unchanging and unchangeable. While this way might be helpful for teaching children, it is far from accurate.The English language, like many others, is a living, growing, ever-evolving thing. Like it or not, you are involved in this change. These changes take many forms. Grammar and spelling have changed greatly over the years and centuries, with the spelling differences in different countries today a reflection of this. While the language of a thousand years ago might be called English, most of us would hardly recognize it today as the same language.The first involves changes in the pronunciation of words. Many are familiar with the differences between the British and American ways of pronouncing certain words. In addition to these differences, the pronunciation of many words has changed over the years because of how you have decided to pronounce them. For example, consider the word "err." The traditional pronunciation of this word rhymes with the word "her." Older dictionaries show this to be the primary or only pronunciation. However, in recent years, more and more people have been pronouncing it so that it sounds like "air." Another change in the language involves the addition and removal of words. The makers of dictionaries decide which words deserve to be officially adopted as part of the English language. Through the centuries, many words have come from other languages. In fact, English has probably donethis more than any other language in the world, which is why spelling and pronunciation rules for English have so many exceptions.Of course, many slang words have been just short-lived fashions that have died out quickly. Others, though, have been adopted by mainstream society and become respectable, as have many technical terms. So then remember, the next time you repeat the newest expression to hit the street, or make up your own words, you may be contributing to the future of the English language.4. When we begin to learn English, we think _________.A. it is interesting to pick up a new languageB. English rules are wrongly presented in factC. grammar and spelling rules are unchangeableD. only adults have the ability to affect a language5. From paragraph 3 we can know that_________.A. we can change the English languageB. many languages are changing over yearsC. English has changed little in the past 1,000 yearsD. there were main changes in grammar and pronunciation6. Why is the pronunciation of words changing?A. people speak in different waysB. people have adopted foreign wordsC. it has been affected by American EnglishD. makers of dictionaries often change them7. Which of the following is the best title for the passage?A. Foreign words involved in English.B. The British speaks differently from Americans.C. English language is changing over years.D. You can change the English language.CYellowstoneNational ParkbecameAmerica's first national park in 1872. The National Park Service was formed 44 years later in 1916.Yellowstone, which is mostly in the state of Wyoming, is considered an example of the success of the National Park System.Humans have been present in Yellowstone for more than 11,000 years.Yellowstone contains beautiful mountains, deep canyons(峡谷), lakes and rivers.The nameYellowstonecomes from the river running through the area. At first known as Rock Yellow River, it became known as theYellowstoneRiver.Yellowstoneis host to many different species of plants. However, the park is most distinctive because of what lies underneath it. It sits on top of an ancient super volcano, known as The Yellowstone Caldera. The caldera is 48 by 72 kilometers. And it remains an active volcano.It is believed that the last time the volcano erupted was one half million years ago. The area has had three major eruptions in the last three million years.Experts say it may erupt again in another 1,000 to 10,000 years. But each year, there are thousands of earthquakes atYellowstone. Most are too small to be felt by people visiting the park.Yellowstoneis filled with the beauty of many hot water springs. hot water and gasses are trapped under the earth. they rush to the surface in the form of hot water and steam.Old Faithful is The most famous one .Iterupts about every hour or hour and a half. The eruption can last from one and a half minutes up to 5 minutes. The amount of hot water it expels（排出）in that time can be as much as 31,000 liters or more.In addition to its beauty and wonder, Yellowstone is an animal sanctuary（保护区）. It is home to the largest group of wild animals in theUnited States. As you travel through the park, you can sometimes see them in their natural habitat and hear their calls .8. What wasYellowstonenamed after?A. RockYellow RiverB. The amazing mountains.C. The stones with yellow color1D. The first discovery inwyoming.9. What makesYellowstonequite unique?A. The scenery is beautiful.B. There are a lot of explorers.C. It’s home to many plants.D. Its location is very special.10. What does the underlined word“It”in Paragraph 5 refer to?A. The earth.B. Yellowstone.C.Old Faithful.D. TheYellowstoneCaldera.11. What can we infer from the text?A. The Yellowstone Caldera has been dead for years.B. Yellowstone is a shelter for the protected wildlife.C. Big earthquakes happen frequently atYellowstone.D.YellowstoneNational Parkhas attracted visitors for centuries.DThe grocerystore might not be your favorite place to visit when you're at home, but is it ever fun when you're in another country? Honestly speaking, they're one of those strange little destinations that I like to sniff out everywhere I go, much as other travelers head toward clothing stores, libraries, coffee shops or galleries.The greatest beauty of the grocery store –– whether it's a supermarket or a tiny shop –– is that it gives you aglimpse into what local people buy to cook their own meals. This offers clues into their lifestyles and preferences, and into the agricultural and cooking practices of the country. I stare at the strange fruits and vegetables, the seafood, the cheese, the spices, the bread, and oh, the chocolate...always the chocolate!Being the environmental nerd（呆子）I am, I like paying attention to packaging, which can reflect people's attitudes towards environmental protection. Italy, for example, has a habit of requiring customers to bag their fruits and vegetables in plastic for weighing, while Sri Lanka leaveseverything loose in bins. In Brazil, everything is prepackaged in a layer of plastic.People in grocery stores tend to be friendlier. They smile, say hello, and sometimes ask questions, which can lead to great conversations. I had a further discussion with a teenaged cashier in Sri Lanka, over which bag of crunchy（松脆的）mix to buy. He insisted that the one labeled “spicy” would be too hot for me, but I told him I was willing to risk it. He laughed and we ended up talking about my favorite Sri Lankan foods for ten minutes.It's interesting then to come home and look at one's own local grocery store through new eyes. What would a visitor think? What stands out, and what do the food displays say about us as a culture? You might be surprised by what you realize.12. According to the author, what is the key benefit of visiting foreign grocery stores?A. Learning to cook foreign dishes.B. Making friends with local people.C. Buying cheaper food and souvenirs.D. Knowing local people and the country.13. What does the author show by mentioning some countries in paragraph 3?A. People's special lifestyles.B. People's shopping habits.C. People's environmental awareness.D. People's packaging methods.14. What can we infer from paragraph 4?A. Sri Lankans know a lot about food.B. Grocery stores are good social places.C. Grocery stores vary in different countries.D. Sri Lankans like to give strangers suggestions.15. Which of the following shows the structure of text? (P: paragraph)A. B.C. D.第二节（共5小题；每小题2分，满分10分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。