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单选题Very old people do raise moral problems for almost everyone who comes in contact with them. Their values—this can"t be repeated too often—are not necessarily our values. Physical comfort, cleanness and order are necessarily the most important things. The social services from time to time find themselves faced with a flat with decaying food covered by small worms, and an old person lying alone on bed, taking no notice of the worms. But is it interfering with personal freedom to insist that they go to live with some of their relatives so that they might be taken better care of ? Some social workers, the ones who clear up the worms, think we are in danger of carrying this concept of personal freedom to the point where serious risks are being taken with the health and safety of the old. Indeed, the old can be easily hurt or harmed. The body is like a car, it needs more mechanical maintenance as it gets older. You can carry this comparison right through to the provision of spare parts. But never forget that such operations are painful experiences, however good the results. And at what point should you cease to treat the old body? Is it morally right to try to push off death by pursuing the development of drugs to excite the forgetful old mind and to activate the old body, knowing that it is designed to die? You cannot ask doctors or scientists to decide, because so long as they can see the technical opportunities, they will feel bound to give them a try on the principle that while there"s life, there"s hope. ? When you talk to the old people, however, you are forced to the conclusion that whether age is happy or unpleasant depends less on money or on health than it does on your ability to have sun.
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单选题 The process of gaining or losing weight can be explained by comparing your body to your car. Both run {{U}}(56) {{/U}} fuel, food for your body and gasoline for your car. Both {{U}}(57) {{/U}} that fuel, first into heat, then energy, some of {{U}}(58) {{/U}} is used to do work, and some emitted as waste. And {{U}}(59) {{/U}} your car uses more energy when the engine is racing than when it is idling, {{U}}(60) {{/U}} does your body use more energy when you are working hard than {{U}}(61) {{/U}} you are resting. For the purpose of this comparison, {{U}}(62) {{/U}}, there is one significant difference between them. Your car cannot store fuel by turning it into {{U}}(63) {{/U}} else; all gasoline not {{U}}(64) {{/U}} remains as gasoline. But your body stores {{U}}(65) {{/U}} energy as fat. When the gas tank is {{U}}(66) {{/U}} empty, the car won't run; but your body can burn fat to provide more energy. Therefore, if you want to gain weight, you must do {{U}}(67) {{/U}} of two things: eat more calories (units of heat, therefore energy), or use less through {{U}}(68) {{/U}}. If you want to lose weight, you do the {{U}}(69) {{/U}}, decrease your intake of calories or increase the amount of energy you spend. There is {{U}}(70) {{/U}} way. Gaining or losing weight is always a relation between intake and output of potential energy.
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单选题Millions of people are using cell phones today. In many places it is actually considered unusual not to use one. In many countries, cell phones are very popular with young people. They find that the phones are more than a means of communication—having a mobile phone shows that they are cool and connected. The explosions around the world in mobile phone use make some health professional worded. Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serous debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas. They say that there is no proof that mobile phones are bad for your health. On the other hand, why do some medical studies show changes in the brain cells of some people who use mobile phones? Signs of change in the issues of the brain and head can be detected with modern scanning (扫描) equipment. In one case, a traveling salesman had to retire at a young age because of serious memory loss. He couldn"t remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer"s doctor didn"t agree. What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about. As the discussion about their safety continues, it appears that it"s best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it"s wise not to use your mobile phone too often.
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单选题{{B}}Passage 1{{/B}} If you are a fan of science fiction, you've no doubt encountered the term nanotechnology. Yet over the past year also, a series of breakthroughs have transformed nanotech from sci-fi fantasy into a real world. Applied science, in the process, inspired huge investments by business, academia, and government. In industries as diverse as health care, computers, chemicals, and aerospace, nanotech is overhauling production techniques, resulting in new and improved products, some of which may already be in your home or workplace. The inspiration for nanotech goes back to a 1959 speech by the late physicist Richard Feynman, then a professor at the California Institute of Technology, titled "There's Plenty of Room at the Bottom. " Four decades later, Chad Mirkin, a Chemistry professor at Northwestern University's $ 34 million nanotech center, used a nanoscale device to etch most of Feynman's speech onto a surface the size of about 10 tobacco smoke particles. What accounts for the sudden acceleration of nanotechnology? A key breakthrough came in 1990, when researchers at IBM's Almaden Research Center succeeded in rearranging individual atoms at will. Using a device' known as a scanning probe microscope, the team slowly moved 35 atoms to spell the three-letter IBM logo, thus proving Feynman right. The entire Logo was less than three nanometers. Soon, scientists were not only manipulating individual atoms but "spray painting" with them as well. Using a tool known as a molecular beam epitaxy, scientists have learned to create ultra fine films of specialized crystals, built up one molecular layer at a time. This is the technology used today to build read-head components for computer hard drives. The next stage in the development of nanotechnology borrows a page from nature. Building a supercomputer no bigger than a speck of dust might seem an impossible task, until one realizes that evolution solved such problems more than a billion years ago. Living cells contain all sorts of nanoscale motors made of proteins that perform myriad mechanical and chemical functions, from muscle contraction to photosynthesis. In some instances, such motors may be re-engineered, or imitated, to produce products and processes useful to humans. How are these biologically inspired machines constructed? Often, they construct themselves, manifesting a phenomenon of nature known as self assembly. The macromolecules of such biological machines have exactly the right shape and chemical binding preferences to ensure that when they combine they will snap together in predesigned ways. For example, the two strands that make up DNA's double helix match each other exactly, which means that if they are separated in a complex chemical mixture, they are still able to find each other easily.
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单选题{{B}}Passage 2{{/B}} Fire can help people in many ways. But it can be very dangerous. Fire can heat water, warm houses, give light and cook. But fire can bum things, too. It can bum trees, houses, animals or people. Sometimes big fires can burn forests. Nobody knows for sure how people began to use fire. But there are many interesting stories about the first time a man or a woman started a fire. One story from Australia tells about a man very, very long time ago. He went up to the sun by a rope (绳子) and brought fire down. Today people know how to make a rue with matches (火柴) . Children sometimes like to play with them. But matches can be very dangerous. One match can bum a piece of paper and then it might bum a house. A small fire can become a big fire very fast. Fire kills many people every year. So you must be careful with matches. You should also learn to put out rues. (80) {{U}}Fires need oxygen(氧气). Without oxygen they will die. Cover a fire with water, sand, or sometimes with your coat.{{/U}} This keeps the air away from a fire and kills it. Be careful with fire, and it will help you. Be careless with fire, and it will burn you.
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单选题In the dimly lit cyber-café at Sciences-Po, hot-house of the French elite, no Gauloise smoke fills the air, no dog-eared copies of Sartre lie on the tables. French students are doing what all students do: surfing the web via Google. Now President Jacques Chirac wants to stop this American cultural invasion by setting up a rival French search-engine. The idea was prompted by Google's plan to put online millions of texts from American and British university libraries. If English books are threatening to swamp cyberspace, Mr Chirac will not stand idly by. He asked his culture minister, Renaud Donnedieu de Vabres, and Jean-Noel Jeanneney, head of France's Bibliothèque Nationale, to do the same for French texts--and create a home-grown search-engine to browse them. Why not let Google do the job? Its French version is used for 74% of interuet searches in France. The answer is the vulgar criteria it uses to rank results. "I do not believe", wrote Mr Donnedieu de Vabres in Le Monde, "that the only key to access our culture should be the automatic ranking by popularity, which has been behind Google's success. " This is not the first time Google has met French resistance. A court has upheld a ruling against it, in a lawsuit brought by two firms that claimed its display of rival sponsored links (Google's chief source of revenues) constituted trademark counterfeiting. The French state news agency, Agence France-Presse, has also filed suit against Google for copyright infringement. Googlephobia is spreading. Mr Jeanneney has talked of the "risk of crushing domination by America in defining the view that future generations have of the world. " "I have nothing in particular against Google," he told L' Express, a magazine. "I simply note that this commercial company is the expression of the American system, in which the law of the market is king. " Advertising muscle and consumer demand should not triumph over good taste and cultural sophistication. The flaws in the French plan are obvious. If popularity cannot arbitrate, what will? Mr Jeanneney wants a "committee of experts". He appears to be serious, though the supply of French-speaking experts, or experts speaking any language for that matter, would seem to be insufficient. And if advertising is not to pay, will the taxpayer? The plan mirrors another of Mr Chirac's pet projects : a CNNà la franeaise. Over a year ago, stung by the power of English- speaking television news channels in the Iraq war, Mr Chirac promised to set up a French rival by the end of 2004. The project is bogged down by infighting. France's desire to combat English, on the web or the airwaves, is understandable. Protecting France's tongue from its citizens' inclination to adopt English words is an ancient hobby of the ruling elite. The Académie Francaise was set up in 1635 to that end. Linguists devise translations of cyber-terms, such as arrosage (spam) or bogue (bug). Laws limit the use of English on TV--" Super Nanny" and "Star Academy" are current pests--and impose translations of English slogans in advertising. Treating the invasion of English as a market failure that must be corrected by the state may look clumsy. In France it is just business as usual.
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单选题Although many people are ______ on going abroad, he prefers to stay in his own country.
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单选题It was with great effort that the_______between the two families was finally arranged.
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单选题
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单选题According to the passage thermal cameras ______.
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单选题Question 21-25 are based on the following passage:
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单选题
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单选题Which of the following is NOT true according to the passage? A. However old she is, a women with some excellent qualities can still maintain her beauty. B. As a women grows old, her beauty will gradually disappear. C. Even a plainly dressed woman may have pure and real beauty. D. A women with a young mind never feels old.
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单选题Jane has ______ won the respect of everyone in the field of dance both for the society and herself. A. deservedly B. exactly C. despicably D. diffusely
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单选题It's very interesting to note where the debate about diversity (多样化) is taking place. It is taking place primarily in political circles. Here at the College Fund, we have a lot of contact with top corporate (公司的) leaders; none of them is talking about getting rid of those instruments that produce diversity. In fact, they say that if their companies are to compete in the global village and in the global market place, diversity is an imperative. They also say that the need for talented, skilled Americans means we have to expand the pool of potential employees. And in looking at where birth rates are growing and at where the population is shifting, corporate America understands that expanding the pool means promoting policies that help provide skills to more minorities, more women and more immigrants. Corporate leaders know that if that doesn't occur in our society, they will not have the engineers, the scientists, the lawyers, or the business managers they will need. Likewise, I don't hear people in the academy saying "Let's go backward. Let's go back to the good old days, when we had a meritocracy (不拘一格选人才)" (which was never true--we never had a meritocracy, although we've come closer to it in the last 30 years). I recently visited a great little college in New York where the campus has doubled its minority population in the last six years. I talked with an African American who has been a professor there for a long time, and she remembers that when she first joined the community, there were fewer than a handful of minorities on campus. Now, all of us feel the university is better because of the diversity. So where we hear this debate is primarily in political circles and in the media-- not in corporate board rooms or on college campuses.
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单选题{{B}}Passage Three{{/B}} In 1998, consumers could purchase virtually anything over the Internet. Books, compact discs, and even stocks were available from World Wide Web sites that seemed to spring up almost daily. A few years earlier, some people had predicted that consumers accustomed to shopping in stores would be reluctant to buy things that they could not see or touch in person. For a growing number of time-starved consumers, however, shopping from their home computer was proved to be a convenient alternative to driving to the store. A research estimated that in 1998 US consumers would purchase $ 7.3 billion of goods over the Internet, double the 1997 total. Finding a bargain was getting easier owing to the rise of online auctions and Web sites that did comparison shopping on the Internet for the best deal. For all the consumer interest, retailing in cyberspace was still a largely unprofitable business, however. Internet pioneer Amazon.com, which began selling books in 1995 and later branched into recorded music and videos, posted revenue of $ 153.7 million in the third quarter, up from $ 37.9 million in the same period of 1997. overall, however, the company's loss widened to $ 45.2 million from $ 9.6 million, and analysis did not expect the company to turn a profit until 2001. Despite the great loss, Amazon.com had a stock market value of many billions, reflecting investors' optimism about the future of the industry. Internet retailing appealed to investors because it provided an efficient means for reaching millions of consumers without having the cost of operating conventional stores with their armies of salespeople. Selling online carried its own risks, however. With so many companies competing for consumers' attention, price competition was intense and profit margins thin or nonexistent. One video retailer sold the hit movie Titanic for $ 9.99, undercutting (削价) the $ 19.99 suggested retail price and losing about $ 6 on each copy sold. With Internet retailing still in its initial stage, companies seemed willing to absorb such losses in an attempt to establish a dominant market position.
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单选题 The Early History of Computers 计算机史 One of the first occurrences of computer technology occurred in the USA in the 1880s. It was due to the American Constitution demanding that a survey be undertaken every 10 years[1]. As the population in the USA increased, it took an increasing amount of time to produce the statistics. By the 1880s, it looked likely that the 1880 survey would not be complete until 1890. To overcome this, Herman Hollerith[2] (who worked for the Government) devised a machine which accepted punch cards with information on them. These cards allowed a current to pass through a hole when there was a hole present. Holleriths electromechanical machine was extremely successful and used in the 1890 and 1900 Censuses. He even founded the company that would later become International Business Machines (IBM)[3]: CTR (Computer Tabulating Recording). Unfortunately, Holleriths business fell into financial difficulties and was saved by a young salesman at CTR, named Tom Watson, who recognized the potential of selling punch card-based calculating machines to American business. He eventually took over the company, and, in the 1920s, he renamed it International Business Machines Corporation (IBM). After this, electromechanical machines were speeded up and improveD. Electromechanical computers would soon lead to electronic computers, using valves. The first electronic computers were developed, independently, in 1943; these were the Harvard Mk I and Colossus[4]. Colossus was developed in the UK and was used to crack the German coding system whereas Harvard Mk I was developed at Harvard University and was a general-purpose electromechanical programmable computer. These led to the first generation of computers which used electronic valves and used punched cards for their main, non-volatile storage[5]. The worlds first large electronic computer(1946), containing 19000 values, was built at the University of Pennsylvania by John Eckert during World War Ⅱ. It was called ENIAC (Electronic Numerical Integrator and Computer)[6] and it ceased operation in 1957. By todays standards, it was a lumbering dinosaur and by the time it was dismantled it weighed over 30 tons and spread itself over 1500 square feet. Amazingly, it also consumed over 25 kw of electrical power but could perform over 100000 calculations per second (which is reasonable, even by todays standards). Unfortunately, it was unreliable, and would only work for a few hours on average, before a valve needed to be replaceD. Faultfinding, though, was easier in those days, as a valve, which was working, would not glow, and would be cold to touch. Valves were fine and were used in many applications, such as in TV sets and radios, but they were unreliable and consumed great amounts of electrical power, mainly to the heating element on the cathode[7]. By the 1940s, several scientists at the Bell Laboratories[8] were investigating materials called semiconductors, such as silicon and germanium. These substances only conducted electricity moderately well, but when they were doped with impurities their resistance changeD. From this work, they made a crystal called a diode, which worked like a valve, but had many advantages, including the fact that it did not require a vacuum and was much smaller. It also worked well at room temperatures, required little electrical current and had no warm-up time. This was the start of microelectronics. One of the great revolutions of all time occurred on December 1948 when William Shockley, Waiter Brattain, and John Bardeen at the Bell Labs produced a transistor that could act as a triode. It was made from a germanium crystal with a thin p-type section sandwiched between two n-type materials. Rather than release its details to the world, Bell Laboratories kept its invention secret for over seven months so that they could fully understand its operation. They soon applied for a patent for the transistor and, on 30 June 1948, they finally revealed the transistor to the world[9]. Unfortunately, as with many other great inventions, it received little public attention and even less press coverage (the New York Times gave it 41/2 inches on page 46). It must be said that few men have made such a profound change on the world, and Shockley, Brattain, and Bardeen were deservedly awarded the Nobel Prize in 1956. In 1959, Fairchild Semiconductor[10] filed for a patent for the planar process of manufacturing transistors. This process made commercial production of transistors possible and led to Fairchild s introduction, in two years. of the first commercial integrated circuit[11]. Within a few years, transistors were small enough to make hearing aids that fit into the ear, and soon within pacemakers. Companies, such as Sony, started to make transistors operate over higher frequencies and within larger temperature ranges. Eventually, they became so small that many of them could be placed on a single piece of silicon. These were referred to as microchips and they stared the microelectronics industry. The first two companies who developed the integrated circuit, were Texas Instruments and Fairchild Semiconductor. At Fairchild Semiconductor, Robert Noyce constructed an integrated circuit with components connected by aluminium lines on a silicon-oxide surface layer on a plane of silicon. He then went on to lead one of the most innovative companies in the world, the Intel Corporation. In the same year, IBM built the first commercial transistorized computer named the IBM 7090/7094 series, which dominated the computer market for many years. In 1960, in New York, IBM went on to develop the first automatic mass-production facility for transistors. In 1963, the Digital Equipment Company (DEC)[12] sold their first minicomputer, to Atomic Energy of Canada DEC would become the main competitor to IBM, but eventually failed as they dismissed the growth in the personal computer market. The second generation of computers started in 1961 when the great innovator, Fairchild Semiconductor, released the first commercial integrated circuit. In the next two years, significant advances were made in the interfaces to computer systems. The first was by Teletype, who produced the Model 33 keyboard and punched-tape terminal. It was a classic design and was on many of the available systems. The other advance was by Douglas Engelbart, who received a patent for the mouse-pointing device for computers. The production of transistors increased, and each year brought a significant decrease in their size. Gordon Moore, in 1964, plotted the growth in the number of transistors that could fit into a single microchip[13], and found that the number of transistors that can be fit into an integrated circuit approximately doubled every 18 months. This is now known as Moores law[14], and has been surprisingly accurate ever since. In 1964, Texas Instruments also received a patent for the integrated circuit. The third generation of computer started in 1965 with the use of integrated circuits rather than discrete transistors. IBM, again, was innovative and created the System/ 360[15] mainframe. In the course of history, it was a true classic computer. Then, in 1970 IBM introduced the System/370, which included semiconductor memories. All of the computers were very expensive (approx. $1,000,000), and were the great computing workhorses of the time. Most companies had to lease their computer systems, as they could not afford to purchase them. As IBM happily clung to their mainframe market, several new companies were working away to erode their share. DEC would be the first, with their minicomputer, but it would be the PC companies of the future who would finally overtake them. The beginning of their loss of market share can be traced to the development of the microprocessor, and to one company: Intel. In 1967, though, IBM again showed their leadership in the computer industry by developing the first floppy disk. The growing electronics industry started to entice new companies to specialize to key areas, such as International Research who applied for a patent for a method of constructing double-sided magnetic tape utilizing a Mumetal foil inter layer[16]. In 1968, Douglas C. Engelbart, of the Standford Research Institute, demonstrated the concept of computer systems using a keypad, a mouse, and windows at the Joint Computer Conference in San Franciscos Civic Center. He also demonstrated the use of a word processor, a hypertext[17] system, and remote collaboration. His keyboard, mouse, and windows concept has since become the standard user interface to computer systems. In 1969, Hewlett-Packard branched into the world of digital electronics with the worlds desktop scientific calculator: the HP 9100A.At the time, the electronics industry was producing cheap pocket calculators, which led to the development of affordable computers, when the Japanese company, Busicom, commissioned Intel to produce a set of between 8 and 12 ICs for a calculator. Then instead of designing a complete set of ICs, Ted Hoff, at Intel, designed an integrated circuit chip that could receive instructions, and perform simple integrated functions on datA. The design became the 4004 microprocessor. Intel produced a set of ICs, which could be programmed to perform different tasks. These were the first ever microprocessors and soon Intel produced a general-purpose 4-bit microprocessor, named the 4004. The 4004 caused a revolution in the electronics industry as previous electronic systems had a fixed functionality. With this processor, the functionality could be programmed by software. Amazingly, by todays standards, it could only handle 4 bits of data at a time (a nibble) , contained 2000 transistors, had 46 instructions and allowed 4KB of program code and I KB of datA. From this humble start, the PC has since evolved using Intel microprocessors. Intel had previously been an innovative company, and had produced the first memory device (static RAM, which uses six transistors for each bit stored in memory), the first DRAM (dynamic memory, which uses only one transistor for each bit stored in memory) and the first EPROM (which allows data to be device, which is then permanently stored). In 1974, Intel was a truly innovative company, and was the first to develop an 8-bit microprocessor. These devices could handle 8 bits (a byte) of data at a time. These were much more powerful than the previous 4-bit devices and were used in many early microcomputers and in applications such as electronic instruments and printers. The 8008 had a 14-bit address bus and could thus address up to 16KB of memory, and the 8080 and 8085 had 16-bit address buses, giving them limit of 64KB. At the time, Intels main product area was memory, and microprocessors seemed like a good way of increasing sales for other product lines, especially memory. Excited by the new 8-bit microprocessors, two kids from a private high school, Bill Gates and Paul Allen, rushed out to buy the new 8008 device. This they believed would be the beginning of the end of the large, and expensive, mainframes (such as the IBM range) and minicomputers. They bought the proceessors for the high price of $360 (possibly, a joke at the expense of the IBM System/360 mainframe), but even they could not make it support BASIC programming. Instead, they formed the Traf-O-Data company and used the 8008 to analyze tickertape read-outs of cars passing in a street. The company would close down in the following year (1973) after it had made $ 20000, but from this enterprising start, one of the leading computer companies in the world would grow: Micro-soft. In 1975, Micro-soft (as it was known before the hyphen was dropped) realized the potential of BASIC for the newly developed 8-bit computer and used it to produce the first programming language for the PC. Their first product was BASIC for the Altair, and licensed it to MITS, their first customer. The MITS, Altair 8800 was a truly innovative system and sold for $375 and had I KB memory. Soon Microsoft BASIC 2.0, for the Altair 8800, was available in 4K and 8K editions. The Altair was an instant successl and MITS began to work on a Motorola 6800-based system. Even its bus became a standard: the S100 bus. The third generation of microprocessors began, in June 1976, with the launch of the 16-bit processors, and it was on May 1978 that Intel released the 8086 microprocessor. This processor was mainly an extension to the original 8080 processor and thus retained a degree of software compatibility. 1985 was the year that Microsoft released their first version of Windows, at a price of $100. It was hardly starting, and would take another two versions before it completely dominated the market. It could not multitask, and still used DOS. Another major failing was that it did not use the full capabilities of the new 32-bit processor(80386) or the enhanced 16-bit processor(80286), and could thus only access up I MB of memory. Microsoft had over the past few years initiated many new products for both the IBM PC, and the Apple Macintosh. In 1985, they consolidated their market with new versions of the successful software, such as MS-DOS 3. 2 and Microsoft Word 3. 0. In MS-DOS 3. 2, support was added for 3. 5-inch 720 KB floppy disk drives (these disks were much more reliable than the older, floppy, 5-inch floppy disk, as they had a hard case to protect them). The initial investment of time, and energy, for those involved in Microsoft was rewarded when, for the first time, Microsoft sold its shares to publiC. When floated, each share was worth $ 21, which raised $ 61 million for Microsoft, and made Bill Gates the worlds youngest billionaire. Notes [1]...American Constitution demanding that a survey be undertaken every 10 years. ……美国宪法要求每10年进行一次调查。一般情况下demand引起的宾语从句中的谓语动词用虚拟语气should do结构,should常可省略。如: (1)Our boss demanded that all the staff members should come to work before 8:00. (2)The teacher demanded that every student hand in the homework in time. [2]Herman Hollerith(1860-1929赫尔曼·哈雷里斯),美国科学家。他开发了卡片制表系统,这一系统被认为是现代计算机的雏形。他于1896年成立了制表机器公司(Tabulating Machine Company)。1911年,哈雷里斯的制表机器公司合并了另外一家公司,组成了计算机制表公司。1924年,在Thomas Watson的领导下,公司更名为国际商业机器公司(IBM)。哈雷里斯至今仍被认为是信息处理之父。 [3]International Business Machines Corporation(IBM)(美国)国际商用机器公司 [4]Harvard MK I哈佛大学20世纪20年代末40年代初设计的机电计算机 [5]... non-volatile storage:(不变)非易失性存储器 [6] ENIAC(Electronic Numerical Integrator and Computer)电子数字积分计算机(第一台通用电子数字计算机的名字) [7]...mainly to the heating element on the cathode:主要是由于阴极射线管上的发热电极 [8]Bell Laboratories: Bell Laboratories贝尔实验室,世界上公认的最大工业实验室,为ATT和Western Electric两家公司所共有.1948年它产生了晶体管,它的成就还包括太阳能电池及第一颗通信卫星(tester)等。 [9]They soon applied for a patent for the transistor and, on 30 June 1948, they finally revealed the transistor to the world. 他们很快申请了晶体管的发明专利,并且在1948年6月30号最终向全世界公布了晶体管。 [10]FairChild(美国)仙童半导体公司 [11]integrated circuit集成电路,常简写成IC [12]the Digital Equipment Company (DEC)(美国)数字设备公司 [13]could be fitted ontoa single microchip. 可以安在一个单芯片上。 [14]This is now known as Moores law. 这就是现在人们熟知的摩尔定律。 [15]the System/360: IBM360计算机系统 [16]Mumetal foil inter layer:钼铁铜锰合金箔夹层。 [17]hypertext: 超级文本,一系列逻辑上互相联结的数据库,一个数据库内的信息和另一个数据库内的信息能够在逻辑上交叉链接 Choose the best answer:
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单选题Which of the following is transparent?
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单选题Man: Ken and Sandra hope to sell their house for $ 3 million. Women: Yeah, they always think big. Question: What does the women think of Ken and Sandra's plan?
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单选题He cannot see anything without his glasses, so he made a ______ of remembering to get them fixed before he went to work, A. chore B. success C. point D. mess
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