首页
登录
职称英语
The Japanese and U. S. governments both studied the concept of "wired citie
The Japanese and U. S. governments both studied the concept of "wired citie
游客
2023-09-01
23
管理
问题
The Japanese and U. S. governments both studied the concept of "wired cities" using cable TV to deliver entertainment, information and educational services similar to those discussed today in the context of the digital revolution. On the basis of these hopes, the US government allowed the cable companies to set up local monopolies. In the event, these never delivered anything other than television with the understandable justification that user trials found minimal consumer interest in any of the other service, including interactive TV.
What, then, is different this time?
First, computers have become more powerful, cheaper, smaller, easier to use (although they still have a long way to go on this front) and more widely distributed, especially within businesses and especially in the U. S. Many of us now have personal computer (PCs) at home and also interact with computer technology in many other guises-games machines, automatic teller machines (ATMs) and the fifty microcomputers in a typical modern car.
Second, the Internet. The Internet is a loose network of networks which enables PCs in most large organizations and many homes and small businesses (using a standard connection to a telephone line! to communicate with each other around the world at low cost. The Internet belongs to no one (although it uses telecommunication links which do)and has no central authority; it is really a set of "communication protocols", more like a language than a physical network, which means that any computer, whatever its internal language is, can communicate with any other. The Internet has existed for many years as an academic network, but took off as a mass application only in the mid-1990s. This was partly because of the invention of new software (the World Wide Web and "browsers") which made it easier to find useful information and move between different sites.
The Internet exhibits a characteristic crucial for all successful communication networks: that their value to each member increases with the number of other members. The same happened with telephones and, more recently, fax machines: neither would be useful except as a status symbol if no one else had one. Once enough other people were on the Web, it became worthwhile for yet more people. In reality, despite all the talk of Websites, "surfing" and cyber-commerce, the main way most people(including the authors)use the Internet today is for electronic mail (e-mail)-typed messages and documents sent from one PC to another. The e-mail population reached" critical mass" in about the mid-1990s. [br] The Internet was ______.
选项
A、mainly used in the academe circle before it found wide application
B、really a set of "communication protocols" before widely applied
C、restricted to domestic users before it found wide application
D、controlled by a central authority before widely applied
答案
A
解析
细节题。从题干和四个选项可以看出此题测试点是Internet广泛应用前的情况。此题应定位于第四段倒数第二句“Internet作为学术网络存在了很多年,但只是20世纪90年代中期才开始得到广泛应用”。此句表明A项“Internet广泛运用前主要用于学术界”是对的。
转载请注明原文地址:https://tihaiku.com/zcyy/2975710.html
相关试题推荐
TheEastIndiaCompanyTheconceptofcorp
[originaltext]Asisknowntoall,scientistsandphilosophershadstudiedt
[originaltext]ThereisoneforeignproducttheJapanesearebuyingfastert
[originaltext]ThereisoneforeignproducttheJapanesearebuyingfastert
What’sthemainideaofthepassage?[br]TheArabsandtheJapanesedifferint
[originaltext]AnewenemyisthreateningJapanesetraditions:leisure.[29]
[originaltext]AnewenemyisthreateningJapanesetraditions:leisure.[29]
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopulat
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopulat
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopulat
随机试题
[originaltext]RedCrossisaninternationalorganizationthatcaresforpeo
Howoftenonehearschildrenwishingtheyweregrownup,andoldpeoplewish
在我国黄土地区建造的各种窑洞式与拱券式住宅中,在地面上用砖、石、土坯等建造一层或
下列哪一项属于慢性病的第三级预防A.中老年妇女每年一次的妇科检查 B.中小学生
A.高张性子宫收缩紊乱 B.低张性宫缩乏力 C.强直性子宫收缩 D.病理缩
男性,30岁,两周前曾去南方出差,2天前突然寒战高烧,体温最高达39.5℃,4小
关于人类沙门菌感染肠炎型(食物中毒),叙述不正确的是A.病后多见带菌者B.潜伏期
患者男,31岁。因车祸造成骨盆骨折,如抢救不及时延误了治疗,可发生的严重并发症是
企业筹资、投资决策的主要依据是()。A:内部收益率 B:风险报酬率 C:资本
脂肪酸β-氧化的限速酶是( )。A.肉碱脂酰转移酶Ⅱ B.肉碱-脂酰肉碱转位
最新回复
(
0
)