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  3. The communications explosion is on the scale of the rail, automobile or telephone revolution. Very soon you’ll be able to record

The communications explosion is on the scale of the rail, automobile or telephone revolution. Very soon you’ll be able to record

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问题     The communications explosion is on the scale of the rail, automobile or telephone revolution. Very soon you’ll be able to record your entire life (1)_____—anything a microphone or a camera can sense you’ Il be able to (2)_____. In particular, the number of images a person captures in a lifetime is set to rise exponentially. The thousand (3)_____ a year I take of my children on a digital camera are all precious to me. (4)_____ a generation’s time, my children’s children will have total image documentation of their entire lives—a (5)_____ log of tremendous personal value.
    By then we’ll be wrestling with another question: how we control all the electronic (6)_____ connected to the internet: trillions of PCs, laptops, cell phones and other gadgets. In Cambridge, we’re already working (7)_____ millimetre-square computing and sensing devices that can be linked to the internet through the radio network. This sort of (8)_____ will expand dramatically (9)_____ microscopic communications devices become dirt-cheap and multiply. Just imagine (10)_____ the paint on the wall could do if it had this sort of communications dust in it: change colour, play music, show movies or even speak to you.
    (11)_____ costs raise other possibilities too. (12)_____ launching space vehicles is about to become very much cheaper, the number of satellites is likely to go up exponentially. There’s lots of (13)_____ up there so we could have millions of them. And if you have millions of loworbit satellites, you can establish a (14)_____ communications network that completely does away with towers and masts. If the satellites worked on the cellular principle so you got spatial reuse of frequencies, system (15)_____ would be amazing. Speech is so (16)_____ that I expect voice communication to become almost free eventually: you’ 11 pay just a monthly fixed (17)_____ and be able to make as many calls as you want. By then people will also have fixed links with business (18)_____, friends and relatives. One day I (19)_____ being able to keep in touch with my family in Poland on a fibreoptic audio-video (20)_____; we’ll be able to have a little ceremony at supper-time, open the curtains and sit down "together" to eat.

选项 A、When
B、Though
C、If
D、Because
答案D
解析 语篇连贯。根据语篇，该句前后是因果关系，意为：因为发射太空运载工具很快就会便宜许多，卫星的数量很可能直线上升。
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考研英语一

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