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
A、Millions of Americans began to doubt the efficiency of telecommunications. B、Millions of Americans sued(起诉)the telecommunicati
A、Millions of Americans began to doubt the efficiency of telecommunications. B、Millions of Americans sued(起诉)the telecommunicati
admin
2010-03-26
49
问题
People in most countries depend on communications technology more than ever before. One day in May, an accident forced millions of Americans to be silent. They had to live and work without the technology they depend on every day.
A telecommunication satellite experienced computer failure. The satellite, known as Galaxy Four, moved from its correct orbit and was unable to receive signals from Earth. A backup computer failed to turn on, and the satellite began to spin out of control.
Galaxy Four was launched in 1993. It cost two hundred fifty million dollars. Galaxy Four provided the major link for millions of pagers, credit card operations, company communications systems, and home satellite equipment. The satellite also was used to send television and radio broadcasts.
The telecommunication satellite failure created big problems for many companies. At least eight of the nation’s ten biggest paging companies depend on Galaxy Four. A pager is an electronic device that receives telephone messages. The pager makes a beeping sound when it receives one. Ninety percent of the nation’s forty-five million pagers lost service when Galaxy Four failed. Paging companies were unable to provide services to police department, doctors and other individuals.
The satellite failure affected many television and radio broadcasts. Thousands of computer users were unable to use the Internet.
A nearby satellite called Galaxy Six has replaced the Galaxy Four satellite. Signals for broadcasting companies are being sent through Galaxy Six. Another satellite, Galaxy Three-R, is replacing Galaxy Four for paging and other signals. Technical experts had to move each person’s satellite equipment to point to Galaxy Three-R. Each move takes about thirty minutes. Technicians say the moves must be exact to within less than a centimeter. They were able to restore service to most customers within a few days.
选项
A、Millions of Americans began to doubt the efficiency of telecommunications.
B、Millions of Americans sued(起诉)the telecommunications company.
C、Millions of Americans were frightened by the accident and became silent.
D、Millions of Americans bad to live and work without the technology they depend on every day.
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/N8k7777K
0
大学英语四级
相关试题推荐
A、Theywelcomedthepublicityinthemedia.B、Theyavoidedappearingontelevision.C、Theyreleasedavideoofhisprogress.D、T
A、Scientistsandphilosophershadneverstudiedthehumanbodyanditsfunctions.B、Manyoftheideasandtheoriesthatpeopleu
IntheUnitedStatesthescienceofclimatechangestillremainsacontroversialissue.Partoftheproblemisthatitiscomple
ThepassagefocusesontheneedforAmericanstolearnforeignlanguages.Itispossibletoget______ofEsperantospeakersan
ThepassagefocusesontheneedforAmericanstolearnforeignlanguages.ThewriterdiscoveredEsperantowhiledoing______on
A、Tobuysomenationaldebt.B、Toopenasavingsaccount.C、Toasktheinterestrate.D、Towithdrawsomemoney.BWhatdoesthem
In1993,womenheld46percentofthepayingjobsintheUnitedStates.Theapplicationofadvancedautomatedandcomputerized
A、Shewantstoseethemanimmediately.B、Sheisn’tsurewhichtrainshe’llbeon.C、Ittakesanhourtogettherebytrain.D、S
A、Bywritingapersonalcheck.B、Bychangingthemtotheirpersonalaccount.C、Bypayingincash.D、Byusingastorecreditcard
Scientistshavedevelopedanewcancerdrug.Sofar,theyhavetesteditonlyon【B1】______animals.Thedrugisdesignedto【B2
随机试题
赋予法人或者其他组织特定的资格、资质的,行政机关根据申请人的()的考核结果作出行政许可决定。
双向沟通
两性霉素B对下列真菌较敏感:
王某,男性,70岁,高血压病30余年,未系统诊治;近几日患者心悸,气短,倦怠乏力,面色苍白,动辄汗出,头晕,面颧黯红,夜寐不安,口干,舌质红,苔薄白,脉细数无力。应首选方剂为
二〇〇七年二月二十五日,××市委、市政府《关于加快发展旅游业的决定》(××字[××××]七号)明确指出:“同意建立旅游建设发展专项资金,其部分资金来源于交通建设附加费的分配,并将此分配比例从原来的5%调高到10%”。对此,我委认为该措施
Oneoftherulesforbeingrichistoavoidfrivoloustemptations.Thatiseasiersaidthandone,andwedonotnecessarilyreco
MobilePhonesMobilephonesshouldcarryalabeliftheyprovedtobeadangeroussourceofradiation,accordingtoRobertBell,
MississippiisatypicalAmericansouthernstate.
Weallthinkthatsheismoreintelligentthan______intheclass.
Asmedicalevidencemountsthatweareindeedwhatweeat,consumingahealthierdiethasbecomealmostanationalpassioninth
最新回复
(
0
)