首页
登录
职称英语
DynaTAC 8000X was a______(2 words)often called "the brick." [br] [originaltext]
DynaTAC 8000X was a______(2 words)often called "the brick." [br] [originaltext]
游客
2025-03-27
36
管理
问题
DynaTAC 8000X was a______(2 words)often called "the brick." [br]
Until nineteen seventy-three, most telephone calls were made either at home, at a business or in a vehicle. But on April third of that year, Martin Cooper of the Motorola Company made history. While walking down the street in New York City, he made the first mobile telephone call.
Mr. Cooper had helped invent the DynaTAC 8000X. It was a mobile telephone often called "the brick." It was much larger and heavier than the mobile phones we use today. After that first call, it took ten years before the phone was ready to be sold to the public. The first ones were very expensive. They cost almost four thousand dollars each. But even with that size and cost, many people stood in line to buy them.
The first mobile telephones used a system, or network, called 1G. It was the "first generation" of technology. This allowed one person to call and talk to another person, but that was all. By the early nineteen nineties, the second generation, or 2G network, came into use. It allowed talking and sending text messages. By that time, cell phones were much smaller and cost much less.
In two thousand and one, the first 3G systems were being used. This new network permitted people using cell phones to make calls, send text messages and use the Internet. Users could even keep photographs and music on their phones, and send them to their friends.
Within the past two years, the 4G network has come into use. It permits cell phones to work much faster and with much more information. Modern cell phones can even act as small televisions. They can show movies and live sporting events.
As the networks have gotten more complex, the telephones have gotten smaller, lighter and less costly. Many electronics stores in the United States even give away the newest cell phones. But customers must agree to pay to use the network that sends their calls from one place to another. It is interesting to imagine what the 5G and 6G network cell phones of the future will be able to do.
选项
答案
live sporting events
解析
live sporting events文中说:现代手机甚至可以充当小电视。它们可以播放电影和直播体育赛事。
转载请注明原文地址:http://tihaiku.com/zcyy/4014487.html
相关试题推荐
Thestudyofgeneticshasgivenrisetoaprofitablenewindustrycalledbio
Thestudyofgeneticshasgivenrisetoaprofitablenewindustrycalledbio
Thestudyofgeneticshasgivenrisetoaprofitablenewindustrycalledbio
[originaltext]Physicalactivitymayhelpstudentsdobetterintheirclasse
[originaltext]Whydobridesneedsomethingold,new,borrowedandblue?Thi
[originaltext]Whydobridesneedsomethingold,new,borrowedandblue?Thi
[originaltext]M:Whattimedoesthelibraryclose?W:OnTuesdayandFridayit
[originaltext]M:Whattimedoesthelibraryclose?W:OnTuesdayandFridayit
[originaltext]W:Larry,areyoufeelingOK?You’resoquietatthepartytonigh
[originaltext]W:Larry,areyoufeelingOK?You’resoquietatthepartytonigh
随机试题
[img]ct_epebm_epeblisttp_00086(200912)[/img][originaltext]The2008OlympicGame
( )是第一部用于质量管理方面的国际标准,引起了各国工业界及其他行业的强烈反响
下列有关mRNA的叙述正确的是A.大多数真核生物的mRNA5′端都有多聚腺苷酸结
下列叙述中错误的是()。A、所有物质的燃烧焓 B C、所有单质的生成焓、
设备购置费是指为建设项目购置或自制的达到()的设备所需的费用。A.固定资产
对水液代谢起主宰作用的是A.心主血脉的作用 B.肾阳气化的作用 C.肺主宣发
A.30%、13%B.3年、1年C.4年、2年D.20%、6%E.8%卫人发[2
下列说法中,正确的是( )。A.大赦既赦其刑,又赦其罪B.特赦只赦其刑
盗窃信用卡并使用的,定( )。A.盗窃罪 B.金融凭证诈骗罪 C.信用证诈
患儿,6个月,冬季出生,人工喂养,睡眠不安、多汗。近日户外活动增多,突然出现惊厥
最新回复
(
0
)