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
2024-01-29
58
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、The improvement of computers’ performance.
B、The formation of a network.
C、The expansion of marketing channels.
D、The improvement of its after-sales service.
答案
B
解析
转载请注明原文地址:http://tihaiku.com/zcyy/3402538.html
相关试题推荐
Thereisnodenyingthatstudentsshouldlearnsomethingabouthowcomputers
Thereisnodenyingthatstudentsshouldlearnsomethingabouthowcomputers
Inthe1960s,medicalresearchersThomasHolmesandRichardRahedevelopeda
Inthe1960s,medicalresearchersThomasHolmesandRichardRahedevelopeda
Inthe1960s,medicalresearchersThomasHolmesandRichardRahedevelopeda
[originaltext]MyfatherwokemeupearlyonemorningwhenIwasfourteen,a
[originaltext]MyfatherwokemeupearlyonemorningwhenIwasfourteen,a
[originaltext]Didyouknowthatthere’sakindofbirdthatcansew?Thisb
[originaltext]Didyouknowthatthere’sakindofbirdthatcansew?Thisb
[originaltext]OnehundredandthirteenmillionAmericanshaveatleastone
随机试题
SDMemoryCardsareversatile,high-capacitystoragecardsthatareextremelysm
Onlinesocialnetworksaremassivelyinfluential,yetweunderstandverylit
在CNCERT/CC(国家计算机网络应急技术处理协调中心)处理的安全事件中,国内
现金流量表的内容包括()。 Ⅰ、经营活动产生的现金流量 Ⅱ、融资活动产生的
在中成药的储存过程中需经常检查霉变的是A.片剂B.胶囊剂C.蜜丸D.外用膏剂E.
下列关于气体灭火系统的维护管理,说法不正确的是()。A.每月对气体灭火系统组
“谁是我们的敌人?谁是我们的朋友?这个问题是革命的首要问题.”这句著名论断出自毛
个体工商户王某于2009年6月在某百货商场租赁一柜台用于销售绿叶公司生产的“绿源
淋巴细胞增多的诊断标准为A.>4.0X109/L B.>3.0X109/L
邮政储蓄机构办理银行卡业务开立的账户纳入个人银行结算账户管理。()
最新回复
(
0
)