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ИКТ 6 класс Босова ПР №9, задание 3 Фигурные стихи

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CONVERSATION

Exercise 1. Answer the questions.

1. What invention was the center of attention at the World Fair in New York in 1939? (the first black-and-white television set) 2. What stopped the TV production? (World War П) 3. What influence has had television on people's life and way of thinking? (great influence; boundaries of time and space have disappeared) 4. What kinds of TV exist now? (satellite, cable, colour, digital and high-definition television) 5. What is the latest and the most important stage in the development of television since the appearance of colour television? (high-definition television) 6. What is the advantage of high-definition television? (the television of much higher resolution) 7. What technology makes HDTV commercially practicable now? (plasma display panel technology) 

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В равнобедренном треугольнике ABC с основанием AC внешний угол при вершине В равен 130°. Найдите величину угла АСВ. Ответ дайте в градусах.

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