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  3. In the 90’s．people went crazy about wireless．Electronic communications once thought bound pennanently to the world of cables and

In the 90’s．people went crazy about wireless．Electronic communications once thought bound pennanently to the world of cables and

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问题 In the 90’s．people went crazy about wireless．Electronic communications once thought bound pennanently to the world of cables and hard wired connections suddenly were sprung free，and the possibilities seemed endless．Entrenched monopolies would fall，and a new uncabled era would usher in a level of intimate contact that would not only transform business but change human behavior． Such was the view by the end of that groundbreaking decade--the 1 890s．
    To be sure the wild publicity of those days wasn’t all hot air．Marconi’s“magic box”and its contemDoraneous inventions kicked off an era of profound changes，  not the least of which was the advent of broadcasting．So it does seem strange that a century later，the debate once more is about how wireless will change everything．And once again，the noisy confusion is justified Changes are on the way that are arguably as earth shattering as the world’s first wireless transformation．
   Certainlv a huge part of this revolution comes from introducing the most powerful communication tools of our time  Between our mobile phones，our BlackBerries and Treos，and our Wi—Fi(Wireless Fidelitv)computers，we’re always on and always connected  and soon our cars and our appliances will be too．While there has been considerable planning for how people will use these tools and how they，U pay for them，the wonderful reality is that，as with theInternet，much of the action in the wireless worid will uhimatelv emerge from the imaginative twists and turns that are possible when digital technology trumps the analog mindset of telecom companies and government regulators•
   Wi-Fi is itseIf a shining exampie of how wireless innovation can shed the tethers of conventional wisdom．  At one point，  it was assumed that when people wanted to use wireless devices for things other than convrsation．they’d have to rely on the painstakingly drawn，investment-heavy standards adopted by the giant corporations that earn a lot through your monthly phone bill．  But then some researchers came up with a new communications standard exploiting an unlicensed part of the spectrum．It was called 802．1 1．and only later sexed up with the name Wi—Fi．
   Though the range of signal was only some dozens of meters Wi-Fi turned out to be a great way to wirelessly extend an Intemet connection in the home or office  A new class of activist was born：the bandwidth liberator．with a goal of extending free wireless Internet to anyone ventunng within the range of a free hotspot．  Meanwhile，Apple Computer seized on the idea as a consumer solution,others foilowed and now Wi-Fi is as common as the modem once was．
The assumption of the future is not all hot air because____________•
选项 A、Marconi made a profound change in the past
B、the wireless technology will change everything，
C、the possibility of wireless technology is justified
D、the wireless technology is already sophisticated
答案C
解析 推理判断题。根据题干中的au hot air定位至第二段首句。本段中讲到马可尼发明的无线电报和其他同时期的发明已经揭开了一个伟大的变革新时代，所以如果再次争论无线技术如何改变生活会让人觉得很奇怪，并且由And once again，the noisy confusion is justified可知C项为答案；第二段提到。Marconi’s“magic box”and its contemporaneousinventions引起了时代的巨大变革，并不是其本人进行改变，排除A项；由该段第三句 “the debate once more is about how wireless will change everything．”可知这只是人们争论的内容，排除B项；D项在文中未提及。
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