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、intricate
B、available
C、flexible
D、fluctuant

答案C

解析 intricate意为"复杂的";available意为"可以得到的";flexible意为"灵活的,有弹性的";fluctuant意为"上下波动的,不稳定的"。此处指通话灵活方便,flexible符合题意;intricate和fluctuant在意义上都是负面的,不符合上下文;available不能和speech构成主谓关系。
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