Прочитайте текст и заполните пропуски подходящими по смыслу словами. Maldacena is an Argentine 1____...: ответ на тест 857103 - Английский язык

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As the population increases, the 1_______ of water supply in many desert regions becomes more urgent with every year.
Scientists 2_______ that the best way to solve this problem is to construct plants that will use atomic energy to distill fresh 3_______ from the sea. It is believed that it will be cheaper to distill sea water than to make 4_______ freshwater reservoirs.

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1_______ are versatile, easy to use, easy to digest and most people like them. Store them in a cool 2_______, larder or refrigerator. Brown or white eggs? The answer is that it does not matter, the difference is only in the eye of the beholder. In America they 3_______ extra for pure white ones, 4_______ do the same for dark brown. Boil them, scramble them, fry them with bacon, make an omelet, make mayonnaise.

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A solid body has a definite form, and tends to keep it; a liquid body must be kept in a vessel and adapts itself to the shape of that vessel, but so as to keep its upper surface horizontal, it tends, moreover, to flow from a higher to lower level. A gas, or a gaseous body, cannot be kept in an open vessel, but must be kept in a vessel closed in all sides; it always fills the vessel completely.
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What form does a solid body have?

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Marie and Pierre Curie knew that radium existed, but they had to prove it because a chemist believes in the existence of a new substance after seeing it, touching it, weighing it and finding out its atomic weight. They began working at that problem in 1898. Their task was to obtain pure radium. The way to separating radium was a difficult one. They could separate radium by treating large amounts of pitchblende.
In 1902 they succeeded in preparing a decigram of pure radium. Radium had something better than a beautiful colour, it was luminous. The discovery of radium gave them the possibility of discovering other radioactive substances.
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What colour was radium?

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Tin is a silvery metal which is not corroded by air. The chief use is for making tin plate, i.e. sheetiron coated with tin. Tin plate is suitable for cans in which acid fruit and other food-stuffs are packed because tin is not attacked by weak acids. For good containers, iron is coated with tin instead of zinc because tin is not subject to attack by acids in food.
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Why is tin plate suitable for cans?

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Atomic energy must serve peaceful purposes only. This is what Academician Igor Kurchatov (1903-1960) worked for until his death.
His team of scientists worked on application of atomic energy in such fields as chemistry, geology, biology and medicine. Academician Kurchatov headed the Atomic Energy Institute of the USSR Academy of Sciences (which is now bears his name) where a great deal of progress has been made in the complicated field of controlling thermo-nuclear reactions.
In 1940 Flerov and Petrzhak, two Russian Scientists, experimentally detected spontaneous nuclear fission of uranium and determined its average life-time.
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What did Kurchatov’s team of scientists work on?