2022年考博英语-大连理工大学考试题库及全真模拟冲刺卷（附答案带详解）1. 单选题Another trend of the 1990s in the computer industry is toward multimedia formats, as the market for conventional types of computer-those that have computation and data processing as their major functions-has begun to become saturated. Multimedia computers are systems that can process graphics, sound, video, and animation in addition to traditional data processing. Videocassette recorders, televisions, telephones, and audiocassette players have recently undergone a change in technology from analog to digital formats. Television images, for example, can be processed by computer programs once they have been converted to digital signals while those in conventional analog signals cannot. In other words, digital video images can be zoomed up or down, reshaped, or rearranged by the appropriate software. Also, due to advances in video-signal compression technology, the memory space required for storing a video program has been greatly reduced.Multimedia has important applications for consumer products and for business needs. Video scenes that are captured by camcorders can be combined with text, sound, and data and can be on television sets in homes, schools, or offices. These multimedia presentations are becoming useful educational and communication tools. For example, there are availableEncyclopedias that contain video programs depicting animal behaviors, geomorphic processes, and other natural phenomena. Automobile mechanics can watch videos that demonstrate how to repair new models. In business applications, documents can be annotated with voice or video. New consumer products can be more effectively marketed by demonstrating how they can be used, CD-ROMS of numerous other subjects have been recently published; all of them can be viewed on TV monitors using multimedia computers. These multimedia computer systems can, in turn, be incorporated into computer networks enhancing the effectiveness of communication.This multitude of new products and capabilities has been made possible by the tremendous progress of microprocessor technology. Because of the advances in this area, personal computers have become more powerful, smaller, and less expensive, which has enabled computer networks to proliferate. Many of the tasks that were traditionally performed by mainframes have been transferred to personal computers connected to communications networks. Although the mainframe continues to be produced and serves a useful purpose, it has been used more often as one of many different computers and peripheral devices connected to computer networks. In this new role, the function of mainframes as powerful processors of database systems in becoming important, and, as a result, massively parallel computers with hundreds or thousands of microprocessors are being produced. In addition to being powerful, the microprocessors used for this purpose must be inexpensive, but low costs can be achieved only if they are mass-produced. Throughout the world, more than 100,000,000 personal computers and 500,000 workstations are in use whereas only several hundred supercomputers are in operation; the numbers of mainframes and minicomputers fall somewhere between those of supercomputers and workstations. Because of such high-volume production, microprocessors for personal computers or workstations tend to be inexpensive and are available for use in massively parallel computers as well.1.Multimedia computers（ ） .2.The underlined word “annotated” in the second paragraph most probably means（ ）3.According to this passage4.Which of the following is a proper title for this passage?问题1选项A.can process anything but digital dataB.can even process television imagesC.are rarely used in educationD.has few business applications问题2选项A.explainB.forwardedC.preparedD.presented问题3选项A.the market for multimedia computers has become saturatedB.most mainframes have been transformed into personal computersC.most personal computers have become much more powerful than mainframesD.the now costs of microprocessors have been achieved thanks to the high-volume production问题4选项A.Multimedia ComputersB.Microprocessor TechnologyC.Computer NetworksD.Changing Role of Computers【答案】第1题:B第2题:A第3题:D第4题:A【解析】1.文章第一段television images, for example, can be processed by computer programs once they have been converted to digital signals while those in conventional analog signals cannot提到电视画面能够通过计算机程序处理，所以选项B符合题意。2.题干中的单词出现在句子In business applications, documents can be annotated with voice or video中，意思是“在商务英语中，文件通常能用视频或者音频作为注释”。选项A “解释”符合题意。3.文章最后一段In addition to being powerful, the microprocessors used for this purpose must be inexpensive, but low costs can be achieved only if they are mass-produced 提到大量生产降低了微处理器的成本，选项D与之相符，符合题意。4.文章讲述的是多媒体电脑给计算机市场带来了各种各样的变化，以及这类电脑在消费类产品和商业需求中的应用，选项A符合题意。2. 单选题First