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1 - The British Universities 2 - The last candidate 3 - The Power of Imagination 4 - Who Invented the Internet? 5 - The Modern Venus 6 - Michael Faraday and the Start of the Elecc Era 7 - Ernest Rutherford 8 - Caged 9 - Dusk 0 - Few Facts about English 1 - Newton lt;...........> 3 - Why You Should Learn More About Computer Security
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THE DEVELOPMENT OF TRUE ROBOTS
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For centuries people have dreamed of having a perfect slave - a robot worker to do their work for them. The name "robot" was first used in 1920, in a play called Rossum's Universal Robots by Karel Capek, a Czechoslovakian science fiction author. The term "robot" is derived from the Czech word "robota", meaning "forced labour". The origin of robots goes as far back in history as the prehistoric man himself. The Stone Age man made the first simple stone tools. With the passage of time, the wheel, the lever and the pulley were invented. These aids multiplied the power of the human muscle, though man still had to control them.
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The USA
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The USA is a highly developed industrial country, and its agriculture is also highly mechanized. There are coal-mines in the Cordillera Mountains, in the Kansas City region, and in the east near Birmingham and Pittsburgh. Iron is mined near the Great Lakes and in the Pittsburgh, Birmingham and Philadelphia areas. The USA has rich oil-fields in California, Texas and other regions. It holds one of the first places for production of coal, iron and oil, and it also produces silver and gold.
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TRANSISTORS
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The transistor is like a crystal diode, except that the emitter and the collector separated by a few thousands of an inch touch the surface of the crystal. Electrical contact to the bottom of the Germanium crystal is made through the metallic base upon which it rests.
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Составные предлоги
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Таблица времён
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Sources of Electrical Energy

     To produce an electric current requires employing a chemical, as in the battery, or a mechanical, as in the electromagnetic generator, source of energy.

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Текст Free access

London is the capital of Great Britain, its political, economic and cultural centre. It's one of the largest cities in the world. It was founded more than two thousand years ago. Traditionally London is divided into several parts: the City, the West End, the East End and Westminster.

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