首页
登录
职称英语
Many people are surprised when they find the Internet(因特网)was set up in the 1960
Many people are surprised when they find the Internet(因特网)was set up in the 1960
游客
2025-07-01
16
管理
问题
Many people are surprised when they find the Internet(因特网)was set up in the 1960s. At that time, computers were large and expensive. Computer networks(网络) didn’t work well. If one computer in the network broke down, then the whole network stopped. So a new network system (系统) had to be set up. It should be good enough to be used by many different computers. If a part of the network was not working, information could be sent through another part. In this way computer network system would keep on working all the time.
At first the Internet was only used by the government, but in the early 1970s,universities(大学) ,hospitals and banks were allowed(允许) to use it too. However, computers were still very expensive and the Internet was difficult to use. By the start of the 1990s, computers became cheaper and easier to use.
Today it is easy to get on-line(上网) and it is said that millions of people use the Internet every day. Sending e-mail is more and more popular among students.
The Internet has now become one of the most important parts of people’s life.
选项
A、less than 30
B、about 40
C、about 20
答案
B
解析
从文中第一段看出,因特网建立在上世纪60年代,至今约40年的历史了。
转载请注明原文地址:http://tihaiku.com/zcyy/4142866.html
相关试题推荐
Thechangeofweathermadealotofpeoplesick.[br]Theoldman’sdaughterwas
Thechangeofweathermadealotofpeoplesick.[br]Theoldman’shomewasin
ItwasacoldspringmorninginLondon.Peoplewalkinginthestreetwerewearin
Peoplegothereformeals.[br]He/Shemakessomefoodforyou.C
Peoplegothereformeals.[br]Peopleseeafilmthere.E
Thekingwantedallhispeopletoknowthemessage.[br]Thekingwrotethemess
Thekingwantedallhispeopletoknowthemessage.[br]Thekingaskedaservan
Manypeoplewerewatchingthematchyesterdayafternoon.Thereweremanypeople
TheInternethasahistoryof______years.[br]Theword"information"mayprob
TheInternethasahistoryof______years.[br]Agoodnetworksystem______.A、
随机试题
Itdidn’thappenovernight.Theproblemofpollutedairhasbeenfesteringf
BlackFridayBlackFridayisthedayfollowingThanksgivingDayintheUnite
关于血钙描述错误的是A.正常人血钙浓度波动较小B.血钙分为扩散钙和非扩散钙C.血
在异步通信中,每个字符包含1位起始位、7位数据位、1位奇偶位和1位终止位,每秒钟
不属于碳水化合物的是()。A.淀粉 B.葡萄糖 C.多肽 D.糊精
依法对期货公司及其分支机构实行监督管理的机构是()。A、中国证监会 B、期货
下列哪项是锐利手术器械应选用的消毒方法A.化学灭菌法 B.煮沸消毒法 C.紫
测试接地引下线导通首先选定一个与主地网连接良好的设备的接地引下线为参考点,再测试
在镇规划编制过程中,优先要确定的战略性工作是()。A.镇的发展方向 B.镇
我国职业危害申报工作实行属地化管理,下列有关职业危害申报工作的要求中,正确的是(
最新回复
(
0
)