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In digital electronics, signals are broken down into thousands, maybe millions,______, whi

ch are encoded as zeroes and ones.

A.of information

B.of bits of information

C.of little in formation

D.of much in formation

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更多“In digital electronics, signal…”相关的问题
第1题
The purpose of the author in writing the text isA.to advocate the elimination of poverty.B

The purpose of the author in writing the text is

A.to advocate the elimination of poverty.

B.to justify the influence of the digital divide.

C.to democratize computer access today.

D.to expose the myths of the digital divide.

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第2题
Digital photography is still new enough that most of us have yet to form. an opinion about
it【1】develop a point of view. But this hasn’t stopped many film and computer fans from agreeing【2】the early conventional wisdom about digital cameras — they’re neat【3】for your PC, but they’re not suitable for everyday picture taking.

The fans are wrong. More than anything else, digital cameras are radically【4】what photography means and what it can be. The venerable medium of photography【5】we know, it is beginning to seem out of【6】with the way we live. In our computer and camcorder【7】, saving pictures as digital【8】and watching them on TV is no less practical — and in many ways more【9】than fumbling with rolls of film that must be sent off to be【10】.

Paper is also terribly【11】. Pictures that are incorrectly framed,【12】, or lighted are nonetheless committed to film and ultimately processed into prints.

The digital medium changes the【13】. Still images that are【14】digitally can immediately be shown on a computer【15】, a TV screen, or a small liquid crystal display (LCD) built right into the camera. And since the points of light that【16】an image are saved as a series of digital bits in electronic memory,【17】being permanently etched onto film, they can be erased, retouched, and transmitted【18】.

What’s it like to【19】with one of these digital cameras? It’s a little like a first date — exciting, confusing and fraught with【20】.

(1)

A.rather than

B.let alone

C.much less

D.so as to

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第3题
Digital photography is still new enough that most of us have yet to form. an opinion about
it, much less (1)_____ a point of view. But this hasn't stopped many film and computer fans from agreeing (2)_____ the early (3)_____ wisdom about digital cameras—they're neat (4)_____ for your PC, but they're not suit able for everyday picture-taking.

The fans are wrong: more than anything else, digital cameras are radically (5)_____ what photography means and what it can be. The venerable medium of photography as we know (6)_____ is beginning to seem out of (7)_____ with the way we live. In our computer and camcorder culture, saving pictures (8)_____ digital files and watching them on TV is no less (9)_____ and in many ways more (10)_____ than fumbling with rolls of film that must be sent off to be (11)_____.

Paper is also terribly (12)_____ Pictures that are incorrectly framed, focused, or lighted are nonetheless (13)_____ to film and ultimately processed into prints.

The digital medium changes the (14)_____. Still images that are (15)_____ digitally can immediately be shown on a computer monitor, TV screen, or a small liquid-crystal display (LCD) built right into the camera. And since the points of light that (16)_____ an image are saved as a series of digital bits in (17)_____ memory, (18)_____ being permanently etched onto film, they can be erased, retouched, and transmitted on-line.

What's it like to (19)_____ with one of these digital cameras? It's a little like a first date—exciting, confusing and fraught with (20)_____.

A.refute

B.evaluate

C.represent

D.develop

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第4题
选词填空:Scholars of the information society are divided over whether social

Scholars of the information society are divided over whether social inequality decreases or increases in an information-based society. However, they generally agree with the idea that inequality in the information society is_____(36)different from that of an industrial society. As informatization progress in society, the cause and structural nature of social inequality changes as well.

It seems that the information society_____(37)the quantity of information available to the members of a society by revolutionizing the ways of using and exchanging information. But such a view as a_____(38)analysis based on the quantity of information supplied by various forms of the mass media. A different_____(39)is possible when the actual amount of information_____(40)by the user is taken into account. In fact, the more information_____(41)throughout the entire society, the wider the gap becomes between "information haves" and "information have-nots," leading to digital divide.

According to recent studies, digital divide has been caused by three major_____(42): class, sex, and generation. In terms of class, digital divide exists among different types of workers and between the upper and middle classes and the lower class. With_____(43)to sex, digital divide exists between men and women. The greatest gap, however, is between the Net-generation, _____(44)with personal computers and the Internet, and the older generation,_____(45)to an industrial society.

A.accustomed习惯的 通常的

B.acquired 取得

C.assembly 集合

D.attribute 把…归于

E.champions 冠军

F.elements 原理,元素

G.expands 扩大

H.familiar 熟悉的

I.flows 流动

J.fundamentally 从根本上地

K.interpretation 解释

L.passive 被动的

M.regard 把..看作,与…有关

N.respectively 分别地

O.superficial 表面的,肤浅的

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第5题
UN officials pledged Thursday to bridge, the world's digital divide, bringing computers an
d Internet training to poorer countries before they fall further behind in technology and wealth. The Digital Service Corps initiative expands on a University of Pennsylvania pilot that sent three professors and 27 students to the West African country of Mall last spring. Four countries will be selected for visits in December.

In partnering with the private Global Technology Organization, the UN Office for Projects Services wants to reduce the gap separating nations with good technology from those without. "There are more Web sites originating here in New York than in all of Africa," said Reinhart Helmke, executive director of the UN agency. "There are more Web sites originating in Finland than in all of Latin America and the Caribbean." Helmke said the digital divide would be better described as a digital chasm. He said the global economy cannot be sustained if some countries are left out.

Neysan Rassekh, founder and president of Global Technology Organization, vowed to tackle the problem "country by country, town by town, citizen by citizen." The initiative carries no funding, however. The UN projects office, as a self-financing agency with a limited budget, will provide only management know-how: Rassekh's group, which organized the University of Pennsylvania group, plans to solicit(恳求) cash and equipment donations. For the Mall project, the university paid airfare and other expenses through fees that students pay to receive academic credit.

Eliminating the global divide won't be easy. Persuading foreign governments to buy computers instead of food can be tough, even though technology can reduce poverty and hunger in the long run, said Hafidh Chaibi, who promotes global access through the World of Knowledge Foundation in Orlando, Fla. Ernest Wilson, an international development specialist at the University of Maryland, said his research found information technology growing by 18 percent a year in developing countries, compared with 23 percent in industrialized nations. That means the gap continues to grow despite improvements through programs from the United Nations, the World Bank, the Markle Foundation and other organizations.

The UN announcement came as world leaders met at the UN Millennium Summit to discuss such challenges as peace, disarmament and access, to new technology. Over four weeks in May and June, the University of Pennsylvania volunteers set up four computer centers in Mall and trained 120 residents, mostly students and educators who could then teach others. Organizers are also setting up a Web site to help residents obtain information on education and health. The UN agency and its private partner plan to replicate that effort in 10 to 12 countries a year.

The "digital divide" as is used in the first passage refers to ______.

A.the gap in technology and wealth between poor and rich countries

B.inadequate training which technicians in poorer countries have received

C.the availability of computer and Internet technologies to different nations

D.the difference in the number of Web sites created in poor and rich countries

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第6题
For office innovators, the unrealized dream of the "paperless" office is a classic example
of high-tech hubris (傲慢). Today's office drone is drowning in more paper than ever before.

But after decades of hype, American offices may finally be losing their paper obsession. The demand for paper used to outstrip the growth of the US economy, but the past two or three years have seen a marked slowdown in sales—despite a healthy economic scene.

Analysts attribute the decline to such factors as advances in digital databases and communication systems. Escaping our craving for paper, however, will be anything but an easy affair.

"Old habits are hard to break," says Merilyn Dunn, a communications supplies director. "There are some functions that paper serves where a screen display doesn't work. Those functions are both its strength and its weakness. "

In the early to mid-90s, a booming economy and improved desktop printers helped boost paper sales by 6 to 7 percent each year. The convenience of desktop printing allowed office workers to indulge in printing anything and everything at very little effort or cost.

But now, the growth rate of paper sales in the United States is flattening by about half a percent each year. Between 2004 and 2005, Ms. Dunn says, plain white office paper will see less than a 4 percent growth rate, despite the strong overall economy. A primary reason for the change, says Dunn, is that for the first time ever, some 47 percent of the workforce entered the job market after computers had already been introduced to offices.

"We're finally seeing a reduction in the amount of paper being used per worker in the workplace," says John Maine, vice president of a pulp and paper economic consulting firm. "More information is being transmitted electronically, and more and more people are comfortable with the information residing only in electronic form. without printing multiple backups. "

In addition, Mr. Maine points to the lackluster employment market for white-collar workers—the primary driver of office paper consumption—for the shift in paper usage.

The real paradigm shift may be in the way paper is used. Since the advent of advanced and reliable office-network systems, data storage has moved away from paper archives. The secretarial art of "filing" is disappearing from job descriptions. Much of today's data may never leave its original digital format.

The changing attitudes toward paper have finally caught the attention of paper companies, says Richard Harper, a researcher at Microsoft. "All of a sudden, the paper industry has started thinking. 'We need to learn more about the behavioural aspects of paper use. '" he says. "They had never asked, they'd just assumed that 70 million sheets would be bought per year as a literal function of economic growth. "

To reduce paper use, some companies are working to combine digital and paper capabilities.

For example, Xerox Corp. is developing electronic paper: thin digital displays that respond to a stylus, like a pen on paper. Notations can be erased or saved digitally.

Another idea, intelligent paper, comes from Anoto Group. It would allow notations made with a stylus on a page printed with a special magnetic ink to simultaneously appear on a computer screen.

Even with such technological advances, the improved capabilities of digital storage continue to act against "paperlessness," argues Paul Saffo, a technology forecaster. In his prophetic and metaphorical 1989 essay, "The Electronic Pinata (彩罐)", he suggests that the increasing amounts of electronic data necessarily require more paper.

The information industry today is like a huge electronic pinata, composed of a thin paper crust surrounding an electronic core. " Mr. Saffo wrote. The growing paper crust "is most noticeab

A.It further explains high-tech hubris.

B.It confirms the effect of high-tech hubris.

C.It offers a cause for high-tech hubris.

D.It offers a contrast to high-tech hubris.

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第7题
It is generally recognized in the world that the second Gulf War in Iraq is a crucial test
of high-speed Web. For decades, Americans have anxiously (1)_____ each war through a new communications (2)_____, from the early silent film of World War I to the 24-hour cable news (3)_____ of the first Persian Gulf War.

Now, (4)_____ bombs exploding in Baghdad, a sudden increase in wartime (5)_____ for online news has become a central test of the (6)_____ of high-speed Internet connections. It is also a good (7)_____ both to attract users to online media (8)_____ and to persuade them to pay for the material they find there, (9)_____ the value of the Cable News Network persuaded millions to (10)_____ to cable during the last war in Iraq.

(11)_____ by a steady rise over the last 18 months in the number of people with high-speed Internet (12)_____, now at more than 70 million in the United States, the Web sites of many of the major news organizations have (13)_____ assembled a novel collage(拼贴) of (14)_____ video, audio reports, photography collections, animated weaponry (15)_____, interactive maps and other new digital reportage.

These Internet services are (16)_____ on the remarkable abundance of sounds and images (17)_____ from video cameras (18)_____ on Baghdad and journalists traveling with troops. And they have found a (19)_____ audience of American office workers (20)_____ their computers during the early combat.

A.notified

B.publicized

C.followed

D.pursued

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第8题
It is generally recognized in the world that the second Gulf War in Iraq is a crucial test
of high-speed Web. For decades, Americans have anxiously (1)_____ each war through a new communications (2)_____, from the early silent film of World War I to the 24-hour cable news (3)_____ of the first Persian Gulf War.

Now, (4)_____ bombs exploding in Baghdad, a sudden increase in wartime (5)_____ for online news has become a central test of the (6)_____ of high-speed Internet connections. It is also a good (7)_____ both to attract users to online media (8)_____ and to persuade them to pay for the material they find there, (9)_____ the value of the Cable News Network persuaded millions to (10)_____ to cable during the last war in Iraq.

(11)_____ by a steady rise over the last 18 months in the number of people with high-speed Internet (12)_____, now at more than 70 million in the United States, the Web sites of many of the major news organizations have (13)_____ assembled a novel collage(拼贴) of (14)_____ video, audio reports, photography collections, animated weaponry (15)_____, interactive maps and other new digital reportage.

These Internet services are (16)_____ on the remarkable abundance of sounds and images (17)_____ from video cameras (18)_____ on Baghdad and journalists traveling with troops. And they have found a (19)_____ audience of American office workers (20)_____ their computers during the early combat.

A.notified

B.publicized

C.followed

D.pursued

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第9题
根据下列材料,请回答下列各题: Passage One Questions 56 to 60 are based on the following pas
sage. Living in a time when an ever-increasing number of news providers push a constant stream of headlines at us every day, people cannot say they do not feel overwhelmed. But what of its the ways we choose to read the news that make us feel overwhelmed? An interesting new study conducted by Avery Holton and Iris Chyi from the University of Texas looks at the factors that contribute to the concept of information overload. They surveyed more than 750 adults on their digital consumption habits and perceptions of information overload. What the findings suggest, Holton said, is that the news platforms a person is using can play a bigger role in making him feel overwhelmed than the sheer number of news sources being consumed. So even if you read The Huffington Post and The New York Times in a day, you may not feel as drowned with news ff you read on your phone instead of on your desktop. The more contained, or even constrained, aplat form. feels, the more it can contribute to people feeling less overwhelmed, Holton said. That may also explain why people have feelings of being overwhelmed by Facebook, which like reading on the web, can be a bottomless hole of stories, videos, and endless links. But it doesnt explain why people in the survey had different feelings towards Twitter, which can also be a stream of links. One possible explanation is whether you define yourself" as a news fan. The survey asked people to report. how much they enjoyed keeping up with the new——people who said they did had less of a perception of information overload. If youre the type of person who wants to follow news during the day, its likely you have an established routine and a set of sites you check regularly. You also may not need as much context around the news. All of that would make Twitter a good source for you. Conversely, if youre more passive about following the news, you might need to make more , of an effort to find the right sources or find background or contextual information, which could lead to feelings of being overloaded, Holton said. "Knowing what youre looking for can decrease overload or perceptions of overload. So can constant engagement," he said. The new study conducted by Avery Holton and Iris Chyi

A.examines how news providers take advantage of headlines

B.studies what can lead to the concept of information overload

C.discusses solutions for people who feel overwhelmed

D.reviews different attitudes to the digital consumption

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第10题
填空:Videoconferencing is nothing more than a television set or PC monitor with a camera

Through the videocenferencing, not only your voice but also your face, the surroundings and any other graphic and phisical __1__ can be captured and transmitted through the communication system with or without wires. Of course, when you go into the details, the technology involved is very __2__ and the subject matter littered with jargon. Such as ISDN (Integrated Services Digital Network), POTS (Plain Old Telephone Service) or the __3__ behind bandwidth, latency and isochrony which are used to explain how videoconferencing works.Good people communication is __4__ in any business, and the more interaction you can achieve, the more likely it is that your __5__ will be the right ones. Videoconferencing not only allows you to speak to people in different locations, but also note __6__ expressions and gestures that let you know what the other person is really thinking. Meetings are made more __7__ by sharing documents and computer applications that a simple telephone cannot __8__.__9__, organizations are discovering the competitive advantages and the power of videoconferencing. With advances in performance, economical pricing, the ability to __10__ essential meeting tools and connectivity to global telephone networks and standardized videoconferencing protocols, videoconferencing is now a practical reality for any organization.

A) fortunately

B) effective

C) images

D) articulate

E) facial

F) manage

G) decisions

H) connect

I) advanced

J) integrate

K) progressive

L) concepts

M)pictures

N) increasingly

O) important

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