Since 1980 there have been four major developments in TV. The first is video, which has gi

Since 1980 there have been four major developments in TV. The first is video, which has given 1 the power to control what they watch and when they watch it. These days, fifty percent of homes have a VCR (video-cassette recorder) and millions more are being sold every year. The second is satellite TV. Thanks to DBS ( 2 ), dozens of new channels are now 3 to anyone who buys a receiving “dish”.
The third development is cable－a system of hi-tech 4 , which provides even more channels. But not only that, cable also makes 5 possible for you to communicate through your TV.
Fourthly, there’s HDTV (high definition television), which now offers a much 6 and more realistic picture than was possible even a few years ago.
So more channels, more choice, more clarity (清晰). What is there left for 7 to achieve in the future? The answer to that is two-way 8 . Modern technology means that 21st century televisions will be linked to computer data-banks. This way. Views will be able to ask questions about what they’re watching and the answers will appear on their 9 . This idea is called “hyper-media” and it’s still at an early 10 . But then, as we’ve just seen, TV had come a very long way in a very short time. The hyper0media revolution could happen sooner than any many people think.
【小题1】A．listenersB．playersC．viewersD．engineers【小题2】A．direct business systemB．direct broadcast satellitesC．digital broadcast soundD．data bank system【小题3】A．availableB．accessC．linkedD．sent【小题4】A．televisionsB．linesC．stringsD．wires【小题5】A．itB．themC．thisD．that【小题6】A．cheaperB．clearerC．colourfulD．delight【小题7】A．TVB．inventionC．viewersD．video【小题8】A．communicationB．trafficC．dialogueD．operation【小题9】A．booksB．mindsC．screensD．computers【小题10】A．ageB．timeC．processD．stageC

(答案→)C 解析：【小题1】【小题2】【小题3】【小题4】【小题5】【小题6】【小题7】【小题8】【小题9】【小题10】

就是这个解释