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
18
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:https://tihaiku.com/zcyy/3403859.html
相关试题推荐
[originaltext]Ifyouaresomeonewhotendstofocusonthenegative,[19]th
[originaltext]Ifyouaresomeonewhotendstofocusonthenegative,[19]th
[originaltext]Requestingsomeone’sbusinesscardisastraightforwardproce
[originaltext]Requestingsomeone’sbusinesscardisastraightforwardproce
[originaltext]AfellowhadjustbeenhiredasthenewCEO(ChiefExecutive
[originaltext]Ifyouaresomeonewhotendstofocusonthenegative,thinkin
[originaltext]Ifyouaresomeonewhotendstofocusonthenegative,thinkin
[originaltext]Ifyouaresomeonewhotendstofocusonthenegative,thinkin
[originaltext]Requestingsomeone’sbusinesscardisastraightforwardproces
[originaltext]Requestingsomeone’sbusinesscardisastraightforwardproces
随机试题
【B1】[br]【B9】[originaltext]Thelackofpersistenceisthereasonmostpeop
A、Readthebookquickly.B、Speakslowly.C、TellhimmoreabouttheIceAgesocie
Themedicinecanpreventyou().A、fromgettingdrunkB、gotdrunkC、getdrunkD、b
Therearethreedifferentbodytypes:ectomorph,mesomorphandendomorph.Le
—Hi,Steve.Ihaven’tseenyouforages.—Youknow,I’vegotanewjob.—Oh,that
JoyceCarolOatespublishedherfirstcollectionofshortstories,ByTheNo
关于基坑监测点布置的说法正确的是()。A、水平位移监测点宜布置在阴角处 B、支
共用题干 TalkingtoKidsaboutSARS(非典)Scho
预备用于交换的上市公司股票应具备的条件有()。A:该上市公司最近1期末的净资产不
A.恶寒发热 B.寒热往来 C.但热不寒 D.长期低热 E.但寒不热虚寒
最新回复
(
0
)