首页
登录
职称英语
[originaltext](19)The first modern digital computers were developed in the 1940
[originaltext](19)The first modern digital computers were developed in the 1940
游客
2023-06-25
67
管理
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、Because they were developed very well.
B、Because they were portable for every consumers.
C、Because they sold very well in the world.
D、Because they were affordable to individual consumers.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2781432.html
相关试题推荐
[originaltext]Anewstudyfoundthat43percentofboyandgirlparticipant
[originaltext]Peoplewithbiggerbrainstendtoscorehigheronstandardte
[originaltext]Peoplewithbiggerbrainstendtoscorehigheronstandardte
[originaltext]Iliveinasmallvillageinthecountry.MywifeandIrunt
[originaltext]Iliveinasmallvillageinthecountry.MywifeandIrunt
[originaltext]W:Goodafternoon,Mr.Burke.Didyouhaveagoodlunch?M:Yes,
[originaltext]W:Goodafternoon,Mr.Burke.Didyouhaveagoodlunch?M:Yes,
[originaltext]M:Hello.Ineedtotalkwithsomeoneaboutmydriver’slicense.
[originaltext]M:Hello.Ineedtotalkwithsomeoneaboutmydriver’slicense.
[originaltext]Fifteenyearsago,Japaneseengineersastonishedtheworldwi
随机试题
Upgoesgold,downgoesthedollar.Mosteconomistshategold.Not,youunders
Ifyoufeeloverwhelmedbyyourcollegeexperiences,youarenotalone—many
Didhe____________(注意到他去了那家俱乐部)?Didhenoticehimgotothatclub?根据语感,待译部分考查的是感
水泥砂浆强度的合格标准()。A.同强度等级试件的平均强度不低于设计强度等级
在我国的古代名桥中,孔数最多的连拱石桥是()。A.河北赵州桥 B.北京卢沟桥
测算DUI的意义不包括A:了解医生的用药习惯 B:发现用药的流行趋势 C:估
20世纪70年代,中国国际地位进一步提高的主要标志是 A.恢复在联合国的合法席
某年,某市连降暴雨,一矿山尾矿库突然发生垮塌,数百万方矿渣将山下村庄掩埋,该村1
患者男,60岁。患高血压、冠心病多年,病情时轻时重,进入冬季后胸痛加重,胸痛彻背
施工单位在工程施工过程中,必须进行有关检验,未经检验或检验不合格的,不得使用。下
最新回复
(
0
)