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、In the 1940s. B、In the mid-1990s. C、In the 1970s. D、In the 1990s. A
A、In the 1940s. B、In the mid-1990s. C、In the 1970s. D、In the 1990s. A
admin
2019-02-18
18
问题
(19)The first modern digital computers were developed in the 1940s for military purposes that arose during World War Ⅱ. These computers filled entire rooms, and with rates of a few thousand calculations per second, they took hours to perform complex mathematical operations. In the 1970s, the first personal computers were sold. Fitting on a desktop, they are exponentially faster and more powerful than the computers that had once filled large room. (20)They were also affordable to individual consumers, which made it possible for many people to use them for personal, business and academic needs. By the mid-1990s, laptop computers able of millions of calculations per second had been developed. Currently, nearly half of the American homes have a personal computer, and businesses have come to rely on computers for nearly every function.
Now that computers are small, powerful, cheap, and affect every part of our lives, (21)the next step will be the formation of a network connecting all of these computers to each other. On this network, which some people are calling the information highway, great changes take place every day. The changes to society will be as revolutionary as those of the Industrial Age and the Renaissance. Not only will people shop and conduct business through their computers, but they will also engage with every type of human activity, from reading to simply hanging with friends. Computer networks will bring many benefits in the areas of business, education, and social interaction, producing widespread sharing of knowledge, wealth and the worldwide cultural renewal.
Questions 19 to 21 are based on the passage you have just heard.
19.When were the first modern digital computers developed?
20.Why could many people use personal computers?
21.What’s the next step for computers?
选项
A、In the 1940s.
B、In the mid-1990s.
C、In the 1970s.
D、In the 1990s.
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/TY47777K
0
大学英语四级
相关试题推荐
A、Thebestwaytoworkthroughafingermaze.B、Individualsdoingbetterinfrontofanaudience.C、Researchershavingcontribut
Thenumberofpostgraduatestudentstravellingfromnon-EUcountriestostudyatUKuniversitieshasfallenforthefirsttimei
Thenumberofpostgraduatestudentstravellingfromnon-EUcountriestostudyatUKuniversitieshasfallenforthefirsttimei
Oneinsix.Believeitornot,that’sthenumberofAmericanswhostrugglewithhunger.Tomaketomorrowalittlebetter,Feedin
A、Angry.B、Surprised.C、Indifferent.D、Worried.A听音重点是顾客听到店员说他不会戴耳机后的反应。由男士提到Look,Iknowhowtoputtheearphonesinmyears.Tha
A、TheWhiteHousewarnedthemnottodonow.B、Thepanelofexpertsobjectedtheproposals.C、NASAdidn’tgetadequatemoney.D、
A、Yes.B、No.C、Itdepends.D、Maybe.A短文中开头提到站着上课有助于学生更有效率地思考吗?德州农机大学的一项新研究表明确实如此。故选A。
A、Atleast18peoplewereinjured.B、AtleastonebuildingintheJapanesecapitalwasdamaged.C、Someofthehigh-speedtrains
Directions:Forthispart,youareallowed30minutestowriteacompositiononthetopicMyViewonDrivingRestrictionsinBig
A、Britain.B、German.C、France.D、Norway.A
随机试题
在考生文件夹下打开文档WORD.DOCX,按照要求完成下列操作并以该文件名(WORD.DOCX)保存文档。某高校为了使学生更好地进行职场定位和职业准备、提高就业能力,该校学工处将于2013年4月29日(星期五)19:30一21:30在校国际会议中心举办题
关于消防给水阀门的维护管理,每天对水源控制阀进行外观检查,并应保证系统处于无故障状态。()
我国封建社会最后一部大型官修本草是
下列哪项不属于醋制的作用
谷类蛋白质的第一限制氨基酸是
T细胞外周耐受的形成机制包括
某国有公司直接负责的主管人员王某;在签订一份商业合同的过程中,因严重不负责任而上当被骗,致使国家利益遭受重大损失。根据我国刑事诉讼法、刑法和有关的司法解释的规定,这一案件,应由哪一个机关直接受理?
一般而言,期权合约标的物价格的波动率越大,则()。
2009年3月,某卷烟厂从甲企业购进烟丝,取得增值税专用发票,注明价款50万元;使用60%用于生产A牌卷烟(甲类卷烟);本月销售A牌卷烟80箱(标准箱),取得不含税销售额400万元。已知:甲类卷烟消费税税率为56%加150元/标准箱、烟丝消费税税率为30%
1995年-2007年,全市地方财政收入增长了()按照2007年的趋势,2008年的全市财政总收入为()
最新回复
(
0
)