首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
What began with the invention of the telephone in 1876 has today become a global net of cables, satellites, transmitters, and re
What began with the invention of the telephone in 1876 has today become a global net of cables, satellites, transmitters, and re
admin
2013-10-17
43
问题
What began with the invention of the telephone in 1876 has today become a global net of cables, satellites, transmitters, and receivers that enables half the population of the planet to exchange works, data, and images in seconds. It could take less than 25 years more to give the other half of the world’s people this same power.
The unified global telecommunications system, which is called "the Meganet’, represents the greatest construction project ever undertaken. If present trends continue, by early in the 21st century the Meganet will link every computer terminal, fax machine, databank, and telephone instrument on earth.
Unlike its anarchic (无政府主义的) cousin the Internet, which evolved from free interaction among interest groups of computer users, the Meganet of local telephone service, long-distance lines, communications satellites, and mobile relays has been planned, constructed, regulated and largely sponsored by governments and for-profit business interests. As new materials and technologies bring reliable voice and data links to formerly isolated or closed communities, political and economic power struggles grow.
The Meganet breaks long-established patterns of social identity and responsibility. Where private individuals have uncensored access to global information sources, local standards of legality or decency become difficult even to set, let alone to enforce. Economic values may shift, too. Public utility companies have long supplied electric power over miles of high-tension lines, or pumped water through underground pipelines into thousands of homes. Now they are finding that their power-line rights-of-way and physical into-home connections let them compete with cable TV and phone companies to supply information services as well.
Meganet impacts are often double-edged for finance and business, too. New York’s Wall Street district lost 20% of its work force—some 100 000 jobs—in less than a decade, as computers took over tasks once performed by clerks and banks did more of their business by phone transfers and automated teller machines.
选项
A、sponsored by governments
B、similar to its cousin the Internet
C、the continuity of the Internet
D、evolved from spontaneous interaction among interest groups of computer users
答案
A
解析
细节题。文章第三段指出,与Internet不同,Meganet是由政府部门设计、建造、管理,并主要由政府给予支持。因此应选A。
转载请注明原文地址:https://kaotiyun.com/show/ckXO777K
0
在职攻硕英语联考
相关试题推荐
Itwas______thelasttimearoundthetrack______Ireallykickeditin—passingthegossipinggirlfriends,blockingoutthewhistle
ReadthefollowinginformationandwriteanessayofABOUT200WORDS.ItisanARGUMENTATIVEESSAYANDATITLEisNEEDED.Acc
Mostworthwhilecareersrequiresomekindofspecializedtraining.Ideally,therefore,thechoiceofa(n)【C1】______shouldbemad
Eachworkday,theworkersfollowedthesameschedulesandrarely______fromthisroutine.
Theeldestchildisthoroughly______becausetheyalwaysgivehimwhateverhewants.
Allanimalsmustrest,butdotheyreallysleepasweknowit?Theanswertothisquestionseemsobvious.Ifananimalregularly
Thenexttimethemenweretakenupontothedeck,Kuntamadeapointoflookingatthemanbehindhiminline,theonewholay
Thenexttimethemenweretakenupontothedeck,Kuntamadeapointoflookingatthemanbehindhiminline,theonewholay
ClassifiedAdvertisingisthatadvertisingwhichisgroupedincertainsectionsofthepaperandisthusdistinguishedfromdisp
Mostofourfearsareunreasonable,butwefind______.
随机试题
肺胀属外感风寒诱发,痰从寒化为
女性,26岁。有静脉吸毒史,一周前突起畏寒,高热,近日反复咳嗽,咯痰。胸部X线检查示双肺多发结节状致密影,中央有小透光区并可见液平。患者最可能的致病菌是
咳嗽痰少,或痰中带血,口燥咽干,或声音嘶哑,腰膝酸软,或见骨蒸潮热,盗汗颧红,形体消瘦,男子遗精,女子月经不调,舌红少苔,脉细数。证属心悸健忘,失眠多梦,头晕目眩,两目干涩,视物模糊,或肢体麻木,震颤拘挛,或女子月经量少色淡,甚则经闭,面白无华,爪甲不
急性呼吸衰竭患者的护理措施不包括
设计单位对原设计缺陷提出的工程变更应编制设计变更文件,由( )签发工程变更单。
下列关于信托受托人权利和义务的表述中,正确的有()。
在资本资产定价模型中,β系数表示()。
按照现行资源税税目税率规定,石墨以精矿为征税对象,则下列说法正确的有()。
设总体X服从对数正态分布,其概率密度为其中μ为未知参数,且X1,X2,…,Xn是来自总体X的一个简单随机样本.(Ⅰ)求参数μ的最大似然估计量;(Ⅱ)验证是μ的无偏估计量.
Itisanunfortunatefactoftoday’slifethatmostpeoplearegrowingupunabletoseethestars.Theprimenightskyexistson
最新回复
(
0
)