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  3. Any sufficiently advanced technology, noted Arthur C. Clarke, a British science-fiction writer, is indistinguishable from magic.

Any sufficiently advanced technology, noted Arthur C. Clarke, a British science-fiction writer, is indistinguishable from magic.

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问题    Any sufficiently advanced technology, noted Arthur C. Clarke, a British science-fiction writer, is indistinguishable from magic. The fast-emerging technology of voice computing proves his【C1】______Using it is just like casting a spell: say a few words into the air, and a nearby device can【C2】______your wish.
   The Amazon Echo, a voice-driven cylindrical computer that sits on a table top and answers to the name Alexa, can【C3】______music tracks and radio stations, tell jokes, answer trivia questions and control smart【C4】______; even before Christmas it was already resident in about 4% of American households. Voice assistants are【C5】______in smartphones, too: Apple’s Siri【C6】______over 2 billion commands a week, and 20% of Google【C7】______on Android powered handsets in America are input by voice. Dictating e-mails and text messages now works【C8】______enough to be useful. Why type when you can talk?
   This is a huge shift. Simple【C9】______it may seem, voice has the power to transform computing, by providing a natural means of interaction. Windows, icons and menus, and then touchscreens, were welcomed as more【C10】______ways to deal with computers than entering complex keyboard【C11】______But being able to talk to computers【C12】______the need for the abstraction of a "user interface" at all.【C13】______mobile phones were more than existing phones without wires, and cars were more than carriages without horses, so computers without screens and keyboards have the【C14】______to be more useful and powerful than people can imagine today.
   Voice will not wholly【C15】______other forms of input and output. Sometimes it will remain more【C16】______to converse with a machine by typing rather than talking. But voice is destined to【C17】______a growing share of people’s interactions with the technology around them, from washing machines that tell you how much of the cycle they have left to virtual assistants in corporate call-centres.【C18】______,
   to reach its full potential, the technology requires【C19】______breakthroughs—and a resolution of the【C20】______questions it raises around the trade-off between convenience and privacy.
【C11】
选项 A、contents
B、comments
C、commands
D、contexts
答案C
解析 词义辨析题。[A]contents内容；[B]comments评论；[C]commands命令；[D]contexts背景。文中entering complex keyboard 11 意思为“输入复杂的键盘______”。选项[B][D]明显与文章内容无关，比较容易排除。选项[A]与上下文可以搭配，但是比起[C]项commands“命令，指令”，[C]项更符合文章背景，且上文第6空提到过“handles over 2 billion commands”一句，commands一词在文中属于原词复现。故本题答案为[C]。
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