Вопрос № 347515 - Английский язык

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How does digital television work? Basically it performs by splitting the continuous analogue signal into a series of separate pulses. A continuously varying electric signal generated by a usual broadcasting camera is fed into an electronic device which converts it into pulses. These pulses represent binary recordings of the signal’s values at any given moment. At the receiving end of the circuit, the digital signal of binary pulses can be unscrambled back into the analogue signal which is then fed into ordinary TV sets. But the advantages of digital techniques can themselves be used in TV sets in order to improve their reception qualities considerably.

Signals can be either analogue or digital. In an analogue signal, the signal is varied continuously with respect to the information. In a digital signal, the information is encoded as a set of discrete values (for example ones and zeros). During transmission the information contained in analogue signals will be degraded by noise. Conversely, unless the noise exceeds a certain threshold, the information contained in digital signals will remain intact. This noise resistance represents a key advantage of digital signals over analogue signals.
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There are different stories about the beginning of Uncle Sam, but that one Congress officially recognized in 1961 is the story that follows.
Samuel Wilson was born in Arlington, Massachusetts in 1766. He fought in the Revolutionary War with his father and brothers. When the war was over, he moved to Troy, New York. He started a meatpacking business and was well-respected in the community. During the war of 1812, Sam Wilson supplied meat to the U.S. Army in barrels marked U.S. Then asked what the U.S. stood for, one of Wilson’s workers said, Uncle Sam Wilson, the meatpacker. The story gained popularity when it was printed. Soon many things labelled U.S. were being called Uncle Sam’s, not just meat!
After the war, Uncle Sam became the symbol of the nation. People drew him and dressed up like him. Uncle Sam is a U.S.’s symbol that is middle recognized all over the world.

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The two major 1_______ are animal fats and vegetable oils. Butter is a special 2_______ product from milk. The vegetable 3_______ are pressed or extracted from a variety of plant seeds. Of primary importance as sources of edible oils are soybeans, sunflower, cotton seed, corn germ, 4_______, etc.

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Some fast foods contain a lot of 1_______ and sugar. Some health 2_______ believe that high-fat and 3_______ foods change children’s behavior. A recent survey in Japan found that badly behaved children ate more 4_______ than well-behaved children.

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The good news is that 1_______ is changing. It is becoming 2_______. Thai, Turkish, Japanese and Filipino fast food is becoming 3_______ in the United States. You can have a quick snack system in Elephant Jump (Thai), Jollibee (Filipino) or Yoshinoya (Japanese) if you don’t want4_______ .