计算机专业英语的第四版课后习题翻译

中译英参考答案

Unit 1

A computer system consists of hardware system and software system. The hardware of the computer is usually divided into three major parts or three primary subsystems: the CPU, the memory subsystem, and the I/O subsystem.

The CPU performs many operations and controls computer. The memory subsystem is used to store program being executed by the CPU, along with the program’s data. The I/O subsystem allows the CPU to interact with input and output devices such as the keyboard and monitor of a personal computer. The components of the computer are connected to the buses.

The part of the computer that performs the bulk of data processing operations is called the central processing unit and is referred to as the CPU. In microcomputer, it is often called the microprocessor. The CPU is made up of three major parts: control unit, ALU, and register set.

Memory is also known as internal memory or main memory. It refers to the circuits in the computer that hold whatever programs and data are available for immediate use by the CPU.

I/O subsystem includes I/O devices and interface. There are a wide variety of I/O devices, such as mouse, printer, sensor, disk, and so on. Input-output interface provides a method for transferring information between internal storage and external I/O devices. Peripherals connected to a computer need special communication links for interfacing them with the CPU. The purpose of the communication link is to resolve the differences that exist between the central computer and each peripheral.

Unit 2

Storage hardware provides permanent storage of information and programs for retrieval by the computer. Hard disk drives store information in magnetic particles embedded in a disk. Usually a permanent part of the computer, hard disk drives can store large amounts of information and retrieve that information very quickly.

Although fixed hard drive systems offer faster access and have a higher storage capacity than optical discs, optical disc systems use removable media –a distinct benefit. Optical discs –primary CDs and DVDs – are much more widely used than removable hard drive systems. They are the standard today for software delivery, as well as commonly used for storing high-capacity music and video files. There are also versions of both CD and DVD drives available for home audio and home theater use. Optical discs are commonly referred to as compact discs.

CD and DVD discs are read by CD and DVD drives. The speed of a CD or DVD drive is rated as 24x, 32x, 36x, and so on. These labels describe how fast the drive is compared to the first version of that drive. For example, a 36x drive is 36 times the speed of the baseline unit that was originally manufactured. Most optical discs have a title and other text printed only on one side and they are inserted into the drive with the printed side facing up. When inserting such a CD or DVD, be careful not to get dirt, fingerprints, scratches, or anything else that might hinder light reflectivity on the disc’s surface.

Unit 3

(a) A program is a list of instructions or statements for directing the computer to perform a

required data processing task. Programming is a multistep process for creating that list of instructions.

(b) It is important to understand the difference between a class and an object of that class. A class is simply a specification for creating objects. Thus, a single class may create multiple objects.

(c) Java is an object-oriented, network-friendly high-lever programming language that allows programmers to build applications that can run on almost any operating system.

(d) ActiveX is a set of controls, or reusable components that enables programs or content of almost any type to be embedded within a Web page. Whereas a Java must be downloaded each time you visit a Web site, with ActiveX the component is downloaded only once, then stored on your hard disk for later, repeated use.

(e) Programming involves a great deal of creativity. The design is guide to the function or purpose of each component, but the programmer has great flexibility in implementing the design as code. No matter what language is used, each program component involves at least three major aspects: control structures, algorithms, and data structures.

Unit 4

The software system can be divided into two broad categories: application software and system software. Application software consists of the program for performing tasks particular to the machine’s utilization. In contrast to application software, system software comprises a large number of programs. These programs start up the computer and function as the principle coordinator of all hardware components and application software. Without system software loaded into RAM of your computer, your hardware and application software are useless.

System software can be grouped into three basic parts: operating system, utility software, and language translators. The majority of an installation’s utility software consists of programs for performing activities that are fundamental to computer installations yet not included in the operating system. In a sense, utility software consists of software units that extend the capabilities of the operating system.

A computer’s OS is the main collection of programs that manage its activities. The primary chores of an OS are management and control. The OS ensures that all actions requested by a user are valid and processed in an orderly fashion. It also manages the computer system’s resources to perform these operations with efficiency and consistency.

Application software is the software designed to help you solve problems specific to business or perform specific business tasks. Application software then is the layer of software closest to you. Basically, there are four categories of application software: productivity software, business and specialty software, entertainment software and education/reference software.

Unit 5

A computer network is often classified as being either a local area network (LAN), a metropolitan area network (W AN), or a wide area network (W AN). The connection of two or more networks is called an internetwork. The worldwide Internet is a well-known example of an internetwork.

LANs are privately owned networks within a single building or campus of up to a few kilometers in size. They are widely used to connect personal computers and workstations in

company offices and factories to share resources and exchange information.

In general, a given LAN will use only one type of transmission medium. V arious topologies are possible for LANs. The most common LAN topologies are bus, ring and star.

A MAN is basically a bigger version of a LAN and normally uses similar technology. MAN is designed to extend over an entire city. It may be a single network such as a cable television network, or it may be a means of connecting a number of LANs into a large network so that resources may be shared LAN-to-LAN as well as device-to-device. For example, a company can use a MAN to connect the LANs in all of its offices throughout a city.

A WAN spans a large geographical area that may comprise a country, a continent, or even the world. It provides long-distance transmission of data, voice, image, and video information over large geographical area.

In contrast to LANs, W ANs may utilize public leased, or private communication devices, usually in combinations, and can therefore span an unlimited number of miles.

Unit 6

Transmission media are used to transfer messages over a network. For instance, the transmission media used in a network may be a privately owned set of cables, the public phone lines, or a satellite system. Transmission media can either be wired or wireless.

The three types of wired media most commonly used to carry messages are twisted-pair wire, coaxial cable, and fiber-optic cable. One of the most successful developments in transmission media in recent years has been fiber optics. Fiber-optic cable is commonly used for the high-speed backbone lines of a network, or for Internet infrastructure.

Wireless transmission media have become especially popular in recent years. They support communications in situations in which physical wiring is impractical or inconvenient, as well as facilitate mobility. Wireless media are commonly used to connect devices to a network, to share information between computers, to connect wireless mice to a computer, and for handheld PCs, wireless phones, and other mobile devices. Radio signals transferred through the air are the heart of most types of wireless media. In addition to conventional broadcast radio application, the microwave, cellular, and satellite transmission media also use radio signals to transmit data.

Radio transmissions require the use of a transmitter to send the radio signals through the air.

A receiver (usually containing some type of antenna) accepts the date at the other end. When a device functions as both a receiver and transmitter, it is commonly called a transc eiver or transmitter-receiver.

Unit 7

(a) Since many database systems users are not computer trained, developers hide the complexity from users through several levels of abstraction, to simplify user’s interactions with the system: physical level, logical level, and view level.

(b) A database schema is specified by a set of definitions expressed by a special language called a data-definition language (DDL). The result of compilation of DDL statements is a set of tables that is stored in a special file called data dictionary, or data directory.

(c) The structured query language (SQL) is the most widely used and standard query language for relational database management systems. It is a kind of non-procedural language.

(d) An entity is a ―thing‖or ―object‖in the real world that is distinguishable from other

objects. For example, each person is an entity, and bank accounts can be considered to be entities. Entities are described in a database by a set of attributes.

(e) Data warehouse is one of the newest and hottest buzzwords and concepts in the IT field and the business environment. A data warehouse is a logical collection of information——gathered from many different operational databases——that supports business analysis activities and decision-making tasks.

Unit 8

Animation is the term used to describe a series of graphical images that are displayed one after the other to simulate movement. Cartoons on television are one example of animation.

Video differs from animation in that it usually begins as a continuous stream of visual information that is broken into separate images or frames when the video is recorded. When the frames are projected—typically at a rate of 30 frames per second—the effect is a smooth reconstruction of the original continuous stream of information. As you might imagine, at 30 frames per second, the amount of data involved in displaying a video during a multimedia presentation can require a substantial amount of storage space. Consequently, video data—like audio data—is often compressed. A variety of compression standards exist. Some of the most common video file formats are .avi, .mpeg, .mov, .rm.

For multimedia presentation, video may be recorded using a standard (analog) video camera and then converted to digital form as it is input into a computer. Alternatively, the film can be recording digitally using a digital video camera. Streaming video is frequently used on Web pages to reduce file size. Similar to streaming audio, Streaming video files can begin playing once a portion of the video has been downloaded.

Unit 9

(a) AI is currently being applied in business in the form of knowledge systems, which use human knowledge to solve problems. The most popular type of knowledge-based system is the expert system. An expert system is a computer program that attempts to represent the knowledge of human experts in the form of heuristics. The term heuristic is derived from the same Greek root as the word eureka, which means ―to discover‖.

(b) The user interface enables the manager to enter instructions and information into the expert system and to receive information from it. The instructions specify the parameters that guide the expert system through its reasoning processing. The information is in the form of values assigned to certain variables.

(c) The knowledge base contains both facts that describe the problem area and knowledge representation techniques that describe how the facts fit together in a logic al manner. The term problem domain is used to describe the problem area.

(d) An expert system, also called a knowledge-based system, is an artificial intelligence system that applies reasoning capabilities to reach a conclusion. Expert systems are excellent for diagnostic and prescriptive problems.

(e) The DSS is not intended to replace the manager. The computer can be applied to the structured portion of the problem, but the manager is responsible for the unstructured portion——applying judgment or intuition and conducting analyses.

Unit 10

The linked list (see figure 1) consists of a series of nodes, which are not necessarily adjacent in memory. Each node contains the element and a link to a node containing its successor. We call this the next link. The last cell’s next link references null.

To execute printList or find(x) we merely start at the first node in the list and then traverse the list by following the next links. This operation is clearly linear-time, as in the array implementation, although the constant is likely to be larger than if an array implementation were used. The findKth operation is no longer quite as efficient as an array implementation; findKth(i) takes O(i) time and works by traversing down the list in the obvious manner. In practice, this bound is pessimistic, because frequently the calls to findKth are in sorted order (by i). As an example, findKth(2), findKth(3), findKth(4), and findKth(6) can all be executed in one scan down the list.

The remove method can be executed in one next reference change. Figure 2 shows the result of deleting the second element in the original list.

The insert method requires obtaining a new node from the system by using a new call and then executing two reference maneuvers. The general idea is shown in figure 3. The dashed line represents the old next reference.

figure 1

figure 2

figure 3

Unit 11

(a) A set is pure if all of its members are sets, all members of its members are sets, and so on. For example, the set containing only the empty set is a nonempty pure set.

(b) A language is a describable set of finite strings, drawn from a fixed alphabet. A grammar is one way to "describe" the language. The grammar consists of a finite list of rules, where each rule replaces one substring with another. The string on the left must contain at least one nonterminal. The first string "produces" or "generates" the second. Thus a rule is also called a production.

(c) A finite-state machine (FSM) or finite-state automaton（FA）is a mathematical abstraction sometimes used to design digital logic or computer programs. It is a behavior model composed of a finite number of states, transitions between those states, and actions, similar to a flow graph in which one can inspect the way logic runs when certain conditions are met.

(d) Sometimes it is inconvenient or impossible to describe a set by listing all of its elements. Another useful way to define a set is by specifying a property that the elements of the set have in common. The notation P(x) is used to denote a sentence or statement P concerning the variable object x. The set defined by P(x) written {x | P(x)}, is just a collection of all the objects for which

P is true.

Unit 12

(a) Because drawings are typically displayed in 3D, CAD is especially helpful in designing automobiles, aircraft, ships, buildings, electrical circuits (including computer chips), and even clothing.

(b) Computer-integrated manufacturing (CIM) is the manufacturing approach of using computers to control the entire production process. This integration allows individual processes to exchange information with each other and initiate actions. Through the integration of computers, manufacturing can be faster and less error-prone, although the main advantage is the ability to create automated manufacturing processes.

(c) In addition to supporting decision making, coordination, and control, information system may also help managers and workers analyze problems, visualize complex subjects, and create new products.

(d) Knowing the history and evolution of ERP is essential to understanding its current application and its future developments.

(e) In addition to monitoring operational activities such as tracking the status of orders and inventory levels, enterprise system also improve organization-wide reporting and decision making.

Unit 13

(a) There are a wide variety of educational application programs available. Educational software is designed to teach one or more skills, such as reading, math, spelling, a foreign language, world geography, or to help prepare for standardized tests.

(b) Electronic business (e-business) is the use of information technology and electronic communication networks to exchange business information and conduct transactions in electronic, paperless form.

(c) Word processing software allows you to use computers to create, edit, store, and print documents. You can easily insert, delete, and move words, sentences, and paragraphs——without ever using an eraser.

(d) What is a spreadsheet? Spreadsheet software takes its name from the accountant’s columnar worksheet, which it imitates. A spreadsheet is a worksheet consisting of a collection of cells formed by the intersection of rows and columns. Each cell can store one piece of information: a number, word or phrase, or formula.

Unit 14

(a) A geographic information system (GIS) is a system that captures, stores, analyzes, manages and presents data with reference to geographic location data. In the simplest terms, GIS is the merging of cartography, statistical analysis and database technology.

(b) The GPS receiver uses the messages it receives to determine the transit time of each message and computes the distance to each satellite. These distances along with the satellites' locations are used to compute the position of the receiver. This position is then displayed, perhaps with a moving map display or latitude and longitude; elevation information may be included.

(c) Virtual reality (VR) is a term that applies to computer-simulated environments that can simulate physical presence in the real world. Most current virtual reality environments are

primarily visual experiences, displayed either on a computer screen or through special stereoscopic displays, but some simulations include additional sensory information, such as sound through speakers or headphones.

Unit 15

(a) The software development process is sometimes called the software development life cycle (SDLC), because it describes the life of a software product from its conception to its implementation, delivery, use, and maintenance.

(b) How can the CMM help your organization? There are three key roles the CMM plays. First, the CMM helps build an understanding of software process by describing the practices that contribute to a level of process maturity. The second role of the CMM is to provide a consistent basis for conducting appraisals of software processes. The CMM’s third key role is to serve as a blueprint for software process improvement.

(c) The UML offers a standard way to write a system’s blueprints, including conceptual things such as business processes and system functions as well as concrete things such as programming language statements, database schemas, and reusable software components. The UML represents a collection of the best engineering practices that have proven successful in the modeling of large and complex systems.

(d) Object modeling is a technique for identifying objects within the system environment and the relationships between those objects. The object-oriented approach to system development is based on several concepts, such as object, attribute, behavior, encapsulation, class, inheritance, polymorphism, persistence, etc.

Unit 16

―Security‖ is an all-encompassing term that describes all the concepts, techniques, and technologies to protect information from unauthorized access. There are several requirements for information security.

Confidentiality: hiding data, usually with encryption, to prevent unauthorized viewing and access.

Authenticity: the ability to know that the person or system you are communicating with is who or what you think it is.

Access control: once a person or system has been authenticated, their ability to access data and use systems is determined by access controls.

Data integrity: providing assurance that an information system or data is genuine.

Availability: making sure that information is available to users in a secure way.

To prevent unauthorized access, some type of identification procedure must be used. These vary from passwords to physical access object (access cards, etc.) to biometric devices that verify some type of personal characteristic, such as a fingerprint.

Some of the most secure access control systems address both identification and authentication. Identification involves verifying that the person’s name or other identifying feature is listed as an authorized user; authentication refers to determining whether or not the person is actually who he or she claims to be.

Unit 17

A distributed system is a collection of independent computers which appear to the users of system as a single computer. Nearly all large software systems are distributed. For example, enterprise-wide business systems must support multiple users running common applications ac ross different sites.

A distributed system encompasses a variety of applications, their underlying support software, the hardware they run on, and the communication links connecting the distributed hardware. The largest and best-known distributed system is the set of computers, software, and services comprising the World Wide Web, which is so pervasive that it coexists with and connects to most other existing distributed systems. The most common distributed systems are networked client/server systems. Distributed systems share the general properties described below.

●Multiple nodes

●Message passing or communication

●Resource sharing

●Decentralized control

●Concurrency or parallelism

●Fault tolerance

●Heterogeneity

●Openness

Distributed systems have many inherent advantages, especially over centralized systems. Some applications are inherent distributed as well. In general, distributed systems:

●Yield higher performance

●Allow incremental growth

●Allow one user to run a program on many different machines in parallel

●Provide higher reliability

英语课后翻译答案新

U n i t1 1. 任何年满18岁的人都有资格投票。(be eligible to, vote) Anyone over the age of 18 is eligible to vote. 2. 每学期开学前，这些奖学金的申请表格就会由学校发给每一个学生。(apply for, scholarship) A form to apply for these scholarships is sent by the university to every student before the start of every semester. 3. 遵照医生的建议，我决定戒烟。(on the advice of) On the advice of my doctor, I decided to give up smoking. 4. 公园位于县城的正中央。(be located in) The park is located right in the center of town. 5. 这所大学提供了我们所需的所有材料和设备。(facilities) The university provides all the materials and facilities we desire. 1. 他们花了多年的时间寻找内心的平静，但是收效甚微。(search for) They spent many years searching for peace of mind, but with little success. 2. 这种新药的成功研制已经使许多疾病的治疗发生了根本性的变革。

习题参考答案-《计算机专业英语(第

1.Oral practice. Work in pairs and talk about what you have done for exercise. Omitted. 2.Fill in the blanks with proper forms of words and phrases given. (1)favorite (2)are good for (3)have prepared for (4)will compete (5)did well in 3.Drill three: Choose the best answer from the given choices. (1)B (2)B (3)C (4)A (5)B 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 A 1.honor 2.good for

3.Jogging 4.spend 5.except Part B 1.settings 2.Related 3.document 4.folder 5.menus Part 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)E (2)D (3)B (4)C (5)A 2.从A、B、C、D选项中选择正确答案。 (1)A (2)A (3)C (4)A

(5)C (6)A (7)A (8)A (9)B (10)C Part Three: Translation 翻译 1.将下列短语翻译成英文。 (1)jogging in the playground every day (2)favorite singer (3)to join a sports meet (4)over 60 percent of market (5)all kinds of versions (6)by far 2.将下列句子翻译成中文。 (1)足球是你最喜爱的运动吗？ (2)夺冠固然光荣，但从运动中获得快乐更有价值。 (3)GUI是图形用户界面的缩写。 (4)桌面显示Windows里所有的工作。 (5)人们可以通过使用鼠标轻易地拖曳一个窗口并改变它的大小和位置。Part Four: Reading 阅读

计算机专业英语教程(第四版)习题答案解析

计算机专业英语（第四版）课后习题答案 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; memory 3. central processing unit 4. internal; primary; memory 5. 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. H B. 1. user 2. monitor 3. data 4. keyboard 5. data processing 6. information 7. computer 8. memory [Ex 4] 1. input device 2. screen, screen 3. manipulates 4. instructions 5. retrieve 6. code 7. hard copy 8. Function [Ex. 5] 新处理器开始IT技术的新时代 New Processors Open New Era of IT Technologies Last week, Intel introduced to the public in Russia and other CIS countries a family of processors Intel Xeon E5-2600. They are more powerful and reliable and, importantly, are very economical in terms of energy consumption. Their presence opens a new era in the field of IT technologies and means that the cloud technology is getting closer. These processors are primarily designed for servers, data centers (DPC) and supercomputers. The emergence of this class of devices is not accidental. According to the regional director of Intel in Russia and other CIS states Dmitri Konash who spoke at the event, the market of IT-technology is developing so rapidly that, according to forecasts, by 2015 there will be 15 billion devices connected to the Internet, and over 3 billion of active users. 上周，英特尔公司向俄罗斯和其它独联体国家的公众推出了英特尔Xeon E5-2600系列处理器，它们更加强大可靠，尤其是在能量消耗方面更加经济实惠。它们的问世意味着IT技术领域开始了一个新时代，标志着云技术距离我们越来越近。 这些处理器主要是为服务器、数字处理中心和超级计算机设计的。这种处理器的出现并非偶然。根据英特尔公司俄罗斯和其他独联体地区负责人Dmitri Konash就此事发表的看法，IT技术市场的发展速度极快，根据预测，到2015年与英特网连接的设施将有150亿，用户超过30亿。 [Ex 6] 1. T 2. T 3. F 4. F 5. T 6. F 7. T 8. F Unit 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 capabilities

大学英语三课后习题翻译及答案

Unit 1 From her accent I guess she’s from the Northeast. 从她的口音我猜她是来自东北地区的。 It was very clever of her to turn his argument against himself. 她很聪明，使他对自己的论点 I found a couple of shoes under the bed but they don’t make a pair. 我在床下发现了一双鞋，但他们不做一双 4. Dr. Bright always takes his time as he examines his patients and treats them with extreme care. Bright博士总是把他的时间用于他检查他的病人，并把他们的极端护理 5. British companies are trying to avoid the fate their American counterparts have already suffered. 英国公司正试图避免他们的美国同行已经遭受的命运。 6. Wilfred’s remarks confirmed me in my opinion that he was an honorable young man. 威尔弗雷德的话证实了我在我看来，他是一个光荣的年轻人 7. The key witness for the prosecution was offered police protection after she received death threats. 检察机关的主要证人在收到死亡威胁后提供了警方的保护 8. I thought that was the end of the matter but subsequent events proved me wrong. 我认为这是事情的结束，但随后的事件证明我错了。 9. Having practiced for so long, the New York baseball team stands a chance winning the World Series this year. 经过这么长时间的练习，纽约棒球队赢得了今年的世界系列赛的机会。 10. At the trial , Bob’s teacher, who was called as a character witness, said he was a quiet boy who had never been in trouble before. 在审讯中，鲍伯的老师，被称为证人，说他是个安静的男孩以前从未惹过麻烦。 Unit 2 11. We’ve just had a very fruitful meeting with the management and we’re now much more hopeful about the pay rise. 我们刚刚与管理层有了一个非常富有成效的会议，我们现在对加薪的希望更大了 12. The book I’m reading explains the evolution of plant and animal life on earth. 我读的这本书解释了地球上动植物的进化

计算机专业英语复习题完整版

计算机专业英语复习题标准化管理处编码[BBX968T-XBB8968-NNJ668-MM9N]

1.home page 主页 2.graphical user interface (GUI) 图形用户界面 3.artificial intelligence 人工智能 4.carbon copy 打字副本 5.field 字段 6.software suite 软件套装 7.desktop operating system 桌面操作系统 https://www.wendangku.net/doc/9b13999859.html,ser printer 激光打印机 9.machine language 机器语言 10.relational database 关系数据库 11.menu bar 菜单栏 12.secondary storage 辅助存储器；二级存储器 13.system software 系统软件 二、 1.内存 memory 2.输入设备 input device 3.扬声器 speaker

4.局域网 local-area network 5.传输控制协议 transmission control protocol 6.集成电路 integrated circuits 7.上下文敏感 context sensitive 8.微处理器 microprocessor 9.只读存储器 Read-only memory 10.触摸屏 touch screen 11.像素 pixel 12.多媒体 multimedia 13.自动换行 word wrap 三

_________.

A、people B、OS C、keyboards D、procedures E、software ( abc ) 2、For microcomputer, there are three basic system units: ____________ . A、Desktop system units B、Notebook system units C、Personal digital assistant system units D、Arithmetic-logic units ( a ) 3、Language translators convert programming statements into__________. A、machine languages B、UNIX C、service programs D、operating systems ( b ) 4、The ____________is a list of commands or options from which you can choose. A、icon B、menu C、window D、pointer ( a ) 5、Database management systems are comprised of tables that are made of rows called __________ and columns called __________ . A、fields, records B、ranges, sheets C、records, fields D、 records, ranges ( abcd )6、The four main computer operations are _________.

全新版大学英语3综合教程课后习题翻译原题及答案

1.我们的计算机系统出了毛病，但我觉得问题不大 We have a problem with the computer system, but I think it’s fairly minor. 2.父亲去逝的时候我还小,不能独立生活。就在那时，家乡的父老接过了教育我的责任。My father died when I was too young to live on my own. The people of my hometown took over my upbringing at that point. 3.这些玩具必须得达到严格的安全要求后才可出售给儿童 The toys have to meet strict safety requirements before they can be sold to children. 4.作为新闻和舆论的载体，广播和电视补充了而不是替代了报纸。 Radio and television have supplemented rather than replaced the newspaper as carriers of news and opinion. 5.至于这本杂志，它刊载了世界各地许多报纸杂志上文章的摘要 When it comes to this magazine, it is/ carries a digest of articles from many newspapers and magazines around the world. 1.虽然受到全球金融危机后果的巨大影响，但是我们仍然相信我们能够面对挑战，克服危机。Though greatly affected by the consequences of the global financial crisis, we are still confident that we can face up to the challenge and overcome the crisis. 2.在持续不断的沙尘暴的威胁下，我们被迫离开我们喜爱的村庄，搬迁到新的地方。 Under threat of constant sand storms, we were compelled to leave our cherished village and move to the new settlement. 3.根据最近的网上调查，许多消费者说他们也许会有兴趣考虑购买电视广告中播放的产品。According to a recent online survey, a lot of consumers say they may be motivated to consider buying products shown in TV commercials. 4.看到卡车司机把受污染的废弃物倒在河边，老人马上向警方报告 Having spotted a truck driver dumping contaminated waste alongside the river, the old man reported to the police at once. 5.一些科学家坚信人们总有一天会喜欢转基因农作物的，因为它们能够提高产量，帮助发展 中国家战胜饥荒和疾病 Some scientists hold to the firm conviction that people will come to like genetically modified crops someday since they can increase yields and help combat hunger and disease in the developing world. 1.无论是在城市还是农村，因特网正在改变人们的生活方式。 The Internet is changing the way people live, whether they are in urban or rural areas. 2.和大公司相比，中小公司更容易受到金融危机的威胁。 Medium-sized and small companies are more vulnerable to the threat of the global economic crisis than large ones. 3.关于期末论文，教授要求我们先分析失业图表，然然后对过家的经济发展提供批评性的见解。 With regard to our term paper, the professor asked us to analyze the unemployment chart first, and then provide critical reflections on the nations economic development. 4.他从来也没有想到他们队会大比分赢得那场篮球赛。 It never occurred to him that their team would win the basketball match by a large margin.

计算机专业英语教程(第四版)习题答案

计算机专业英语教程(第四版)习题答案
计算机专业英语（第四版）课后习题答案 Unit 1 [Ex 1] Fb5E2RGbCAP [Ex 2] 1. input, storage, processing, and output 2. power; speed; 1. F 2. T 3. T 4. F 5. T 6. T 7. T 8. T 9. T 10.
memoryp1EanqFDPw 3. central processing unit memoryDXDiTa9E3d 5. keyboard; [Ex 3] B. A. central processing unit; 1. F 2. D 2. monitor 3. G 4. C 5. B main memory; 6. A 7. E monitorRTCrpUDGiT 8. H5PCzVD7HxA 4. internal; primary;
1. user
3. data
4. keyboard
5. data processingjLBHrnAILg
6. information [Ex 4] instructions
7. computer
8. memory 3. manipulates 4.
1. input device 2. screen, screen 5. retrievexHAQX74J0X 8. Function
6. code 7. hard copy
[Ex. 5] 新处理器开始 IT 技术的新时代 New Processors Open New Era of IT Technologies Last week, Intel introduced to the public in Russia and other CIS countries a family of processors Intel Xeon E5-2600. They are more powerful and reliable and, importantly, are very economical in terms of energy consumption. Their
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英语课后翻译答案

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新视野大学英语课后习题翻译答案

新视野大学英语课后习 题翻译答案 -CAL-FENGHAI.-(YICAI)-Company One1

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我们已经在这个项目上投入了大量时间和精力，所以我们 只能继续。 We have already poured a lot of time and energy into the project , so we have to carry on. IIA: 尽管她是家里的独生女，他父母也从不溺爱她。 Despite the fact that she is the only child in the family , her parents never baby her . 迈克没来参加昨晚的聚会，也没有给我打电话作任何解 释。 Mike didn’t come to the party last night , nor did he call me to give an explanation. 坐在他旁边的那个人确实发表过一些小说，但绝不是什么 大作家。 The man sitting next to him did publish some novels , but he is by no means a great writer. 他对足球不感兴趣，也从不关心谁输谁赢。 He is not interested in football and is indifferent to who wins or loses.

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新视野大学英语（第二版）读写教程2 1至7单元课后翻译答案总结 IA：她连水都不愿意喝一口，更别提留下来吃饭了。 She wouldn’t take a drink , much less would she stay for dinner. 他认为我在对他说谎，但实际上我讲的是实话。 He thought I was lying to him , whereas I was telling the truth. 这个星期你每天都迟到，对此你怎样解释? How do you account for the fact you have been late every day this week？ 他们利润增长的部分原因是采用了新的市场策略。 The increase in their profits is due to their new market strategy. 这样的措施很可能会带来工作效率得提高。 Such measures are likely to result in the improvement of work efficiency. 我们已经在这个项目上投入了大量时间和精力，所以我们只能继续。 We have already poured a lot of time and energy into the project , so we have to carry on. IIA: 尽管她是家里的独生女，他父母也从不溺爱她。 Despite the fact that she is the only child in the family , her parents never baby her .

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大学英语 课后翻译答案

Unit 1 1.3000多辆汽车因刹车问题昨日被召回（because of；recall） 1. More than 3000 cars were recalled yesterday because of a brake problem. 2.他尽管病得很重，但还是来参加会议了。（despite） 2. He came to the meeting despite his serious illness. 3.要确保同样得错误今后不再发生了。（see it that） 3. See to it that the same mistake won't happen again. 4.现在他们之间的了解多了一些，他们相处得就好些了。（now that） 4. Now that they've got to know more about each other，they get along better. 5.此时我发现自己被五六个男孩子围住了。（find oneself） 5. Then Ifound myself surrounded by five or six boys. 6.在这幸福的时刻，我向你致以最美好的祝愿。（on occasion） 6. I send you my best wishes on this happy occasion. Unit3 1)很多事情导致了我与那家公司断绝关系。(contribute to) A lot of things contributed to the end of my relationship with that company. 2.面对严峻的疾病，她表现出了巨大的勇气。（in the face of） She showed great courage in the face of serious illness. 3.我们得出结论，她讲的是真话。（come to） We came to the conclusion that she was telling the truth. 4他的秘书没有告诉他那次会议的情况。（fail to）

计算机专业英语复习题

一、判断对错 1. The software system is the physical equipment that you can see and touch. 2. Typically, a data value is set to zero to represent FALSE and 1 value for TRUE. 3. In the earliest general-purpose computer, most input and output media were magnetic disks. 4. Supercomputers are largest, fastest, and most expensive computer available. 5. A computer system consists of hardware system and software system. 1. The data bus always receives data from the CPU, and the CPU never reads the data bus. 2. Main memory holds whatever programs and data are available for immediate use by the CPU. 3. Dynamic RAM does not have to be refreshed. 4.Dot-matrix printer work by squirting tiny droplets of liquid ink at the paper. 5. The auxiliary memory is very small, relatively expensive, and has very high access speed. 1. Shift registers operate in serial fashion all the bits of the word at a time. 2. RISC processors have larger instruction sets that often include some particularly complex instructions. 3. SIMD represents an organization that includes many processing units under the supervision of a common control unit. 4. Parallel processing is established by distributing the data among the multiple functional units. 5. RISC is a complex instruction set computer. 1. A number of different algorithms can exist for solving a computational problem, and each of these algorithms could have a same running time complexity. 2. The divide-and-conquer algorithm is a bottom-up technique that usually begins by solving the smallest subproblems, the dynamic programming solves problems in a top-down fashion. 3. An important property of arrays is that their size and shape are constant. 4. If all of the elements stored in a list are of the same type, then the list is said to be heterogeneous. However, if different types of elements are stored in the list, then the list is said to be homogeneous. 5. A queue is a dynamic set that obeys the LIFO property. 1. The computer hardware recognizes only assembly language instruction. 2. A program written in the assembly language of one microprocessor can run on a computer that has a different microprocessor. 3. Assembly languages are platform-independent, but high-level languages are not platform-independent. 4. The 4GLs are also called nonprocedural languages. 5. Each assembly language instruction corresponds to one unique machine code instruction.