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、The improvement of computers’ performance. B、The formation of a network. C、The expansion of marketing channels. D、The improvem
A、The improvement of computers’ performance. B、The formation of a network. C、The expansion of marketing channels. D、The improvem
admin
2018-07-24
22
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://kaotiyun.com/show/RR47777K
0
大学英语四级
相关试题推荐
A、SheworkedasapeacemakerbetweentheU.S.andUK.B、ShefoundedthefirstprivateinfirmaryinBritain.C、Sheadvocatedwome
BackinthecarefreedaysoftheNoughtiesboom,Britain’syoungstersweresweptalongbythebuy-now-pay-latercultureembraced
InAugust,environmentalistsinthePhilippinesvandalized(肆意破坏)afieldofGoldenRice,anexperimentalgrainwhosegeneshadbe
A、Inthe1940s.B、Inthemid-1990s.C、Inthe1970s.D、Inthe1990s.A
A、64B.C.B、604A.D.C、64A.D.D、604B.C.B
TechnologicalchangesbroughtdramaticnewoptionstoAmericanslivinginthe1990s.Duringthisdecadenewformsofentertainme
TechnologicalchangesbroughtdramaticnewoptionstoAmericanslivinginthe1990s.Duringthisdecadenewformsofentertainme
TechnologicalchangesbroughtdramaticnewoptionstoAmericanslivinginthe1990s.Duringthisdecadenewformsofentertainme
A、SantiagoCalatrava.B、AntonioGaudi.C、SirChristopherWren.D、LeCorbusier.C
随机试题
病房里,一个生命垂危的病人从房间里看见窗外的一棵树的树叶在秋风中一片片地掉落。病人望着眼前的萧萧落叶,身体也随之每况愈下,一天不如一天。她说:“当树叶全部掉光时,我也就要死了。”一位老画家得知后,用彩笔画了一片叶脉青翠的树叶挂在树枝上。于是,最后一片叶子始
某幼儿园中班发现一例甲型病毒性肝炎病例,该园立即采取以下措施:①对患儿进行隔离,时间为30天。②对患儿使用过的玩具、食具进行消毒。③对该班儿童进行医学观察。该园还应采取哪些措施?
普洱茶以其特殊的槟榔香味而被列为全国名茶之一,享誉海内外。
A.极化液疗法B.阿司匹林,口服C.低分子右旋糖酐,静滴D.尿激酶静脉溶栓E.胺碘酮,静注病人经上述治疗后交替出现心房纤颤和心房扑动,心率达120次/分,这时应再采用上述哪种药物治疗
动物有机氟化物中毒治疗时,禁用的药物是()。
星火电器公司是大华银行的开户单位。某日,李某持星火电器公司开出的现金支票到大华银行取款。大华银行的该笔业务涉及的会计要素是()。
编制数量指标指数一般是采用()做同度量因素。
某国内旅行社的导游员小陆作为全陪带一个40人的国内旅游团在东北旅游。按计划全体客人将在某日中饭后乘坐卧铺返回原居住地。前一天晚上,当地地接社的票务员就告诉小陆,由于正值旅游旺季卧铺火车票无法买到,全体客人只能乘硬座返回。小陆知道情况后应采取的措施是(
民族区域自治制度的核心在于()。
Whatisthemaintopicofthisreport?
最新回复
(
0
)