Прочитайте текст и заполните пропуски подходящими по смыслу словами. Before the invention of radio i...: ответ на тест 857131 - Английский язык

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One of 1_______ types of radio programme is radio drama. Although some radio stations only broadcast music, 2_______ also produce plays for their listeners. Many people prefer listening to a play on the radio to watching it on TV because they can be more creative. On TV, the programme-makers 3_______ exactly what a place or a person looks like. On radio, though, you 4_______ imagine it any way you like.

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People can now use the Internet and e-mail to communicate with each other cheaply and quickly. Twenty years ago, however, this wasn’t possible. In those days in Britain, some people used amateur radio to contact people all over the country, and even around the world. They had special radios in their houses that sent out radio signals. They contacted each other to exchange news about their lives and about the weather, or even to play games such as chess.
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People can now use the Internet and e-mail to communicate with each other …

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The invention that swept the world and changed leisure habits for countless millions 1_______ by Scottish-born electrical engineer John Logie Baird. It was television.
It had been realized for some time that 2_______ could be converted into 3_______ impulses, making it possible to transmit such 4_______ over a distance and then reconvert them into light.

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The name electricity came from the Greek word for amber and 1_______ by Elizabeth I’s physician William Gilbert who was among those 2_______ noticed that amber had the power to attract light objects after being rubbed. In the 3_______ century such great names as Michael Faraday, Humphry Davy, Alessandro Volta and Andre Marie Ampere all did 4_______ work on electricity.

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As you know personal computers use a lot of power. In fact, with their printers and monitors, computers in the USA use each year as much electricity as the whole state of Oregon. Not to waste electricity, new ‘green’ computers are being developed by more than a hundred personal computer firms in the USA. When left on but unused for more than a few minutes, they go down to a standby, using 80 per cent less energy. At a command the PCs return to full power.
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How much electricity do the computers in the USA use every year?

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Nowadays, people working in offices use computers, which contain hundreds of documents! Do you know how much space these documents would take up, if they were printed on paper? They’d occupy whole rooms! In many offices computers are linked in a network. This way, employees can exchange information and messages without moving from their tables.
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Why can employees exchange information and messages without moving from their tables?