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
2018-06-24
63
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/7W47777K
0
大学英语四级
相关试题推荐
ThingsYouCan’tSayinCanadaA)Attackingoursacredcows(thingsorpeoplethatcannotbecriticized)mayturnyouintoo
ThingsYouCan’tSayinCanadaA)Attackingoursacredcows(thingsorpeoplethatcannotbecriticized)mayturnyouintoo
A、Anengineroom.B、Abigkitchen.C、Agreattheatre.D、Ahighbuilding.C短文提到:“这种大型喷气式飞机的内部看上去更像一个大剧院。”故C正确。
A、Gettingalongwellwithcolleagues.B、Payingattentiontoeverydetail.C、Planningeverythinginadvance.D、Knowingtheneeds
Forthispart,youareallowed30minutestowriteashortessayonthetopicofDifficultiesinOurLife.Youshouldwriteatl
A、PineappleandmushroomsononehalfandgreenpeppersandItaliansausageontheother.B、Pineappleandgreenpeppersononeh
A、Islamistmilitantsarestillincontrolofthetown.B、Frenchforceshaveenteredthetown.C、Frencharegoingtolandatthe
Directions:Nowadays,althoughpeople’slivingstandardsimproved,manypeoplefeelunhappy.Happinesshasbecomeaprevailingt
A、Helookedsillywithonlyoneleginsidethewindow.B、Heknewthepolicemanwouldn’tbelievehim.C、Thetorchlightmadehiml
A、Allowtheboytohavearest.B、Protecttheboyfrombeinginjured.C、Forcetheboytodowhathedoesn’twant.D、Lettheboy
随机试题
下面有关颈外静脉的描述正确的是()
与传统出版产业相比,我国数字出版产业集中度的表现()。
A.氨基肽酶B.羟化酶C.多核糖体D.寡聚体E.鸦片促黑皮质素原切除多肽链N一蛋氨酸的是
示范文本的组成包括()。
人防工程每个防火分区的安全出口数量不应少于()个。
评价工资是否达到市场一般水平是对工资方案()的评价。
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性:
Wetendtothinkofplantsasthefurnitureofthenaturalworld.Theydon’tmove,theydon’tmakesounds,theydon’tseemtore
在影像世界中,“近景”主要指()。[2009年真题]
设f(x)=讨论函数f(x)在x=0处的可导性.
最新回复
(
0
)