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  • 更新 2022-09-03
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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.

A.listeners B.players C.viewers D.engineers

A.direct business system B.direct broadcast satellites C.digital broadcast sound D.data bank system

A.available B.access C.linked D.sent

A.televisions B.lines C.strings D.wires

A.it B.them C.this D.that

A.cheaper B.clearer C.colourful D.delight

A.TV B.invention C.viewers D.video

A.communication B.traffic C.dialogue D.operation

A.books B.minds C.screens D.computers

A.age B.time C.process D.stage

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Since1980therehavebeenfourmajo