Вопрос № 223875 - Английский язык

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In many fields the science of the Mayas surpassed that of the Greeks and 1_______. Possessing a profound knowledge of mathematics and 2_______ they had achieved a rare degree of perfection in chronology and everything pertaining to calendar-making. In Chichen Itza they 3_______ observatories whose domes were better orientated than the one erected in Paris in the 17th century. They had adopted a sacred year of 260 days, a solar of 365 days and a Venusian year of 584 days. The exact duration of the solar year has been fixed at 365.2422 days. The Mayas put it at 365.2420 days, - i.e. with a decimal point of the number we have arrived after lengthy calculations. It is 4_______ that the Egyptians arrived at the same approximation, but to establish that we should have to believe in concordances in the Pyramids which are doubtful, whereas we actually possess the Mayas calendar.

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It was in London that the word ‘smog’ (smoke+ fog) was first used. In the 19th century London’s thick smogs became famous through descriptions of them in the works of Charles Dickens and Sir Arthur Conan Doyle. The situation in London reached its worst point in 1952. At the end of that year a particularly bad smog, which lasted for several days, caused about 5,000 deaths. At one time, a scene of fog in a Hollywood film was all that was necessary to symbolize London. This image now is out of day.

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Hypatia of Alexandria. Hypatia lived in Alexandria, Egypt from about AD 370 to AD 415. She was well-known for explaining difficult ideas very clearly and simply. Her work in geometry - the mathematics of shapes - helped mathematicians who lived much later to understand the movements of the planets in space. This may help people get to Mars one day!

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Philip Emeagwali. Philip Emeagwali, a Nigerian, left school at fourteen because his family couldn’t afford to pay. He continued studying on his own. At seventeen, he passed an exam and was invited to study in the USA. In 1990, while studying, he used mathematics to predict the location of oil under the ground. He helped people in Nigeria find oil. And everyone knows that oil = money!

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The triangle of fire.
A fire needs three things to burn: ignition (a spark or flame to start the fire), air and fuel (something to burn, for example: wood.) If any one of these three things is removed, a fire cannot burn.
Never try to stop a fire unless you have called the emergency services first! Do not risk your own safety to fight a fire!

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As the old story shows, people have always thought the wind was angry and destructive while the sun was warm and life-giving. And everyone knows that the wind and the sun are very powerful.
In 1934, the wind blew at 372 kilometres per hour in New Hampshire in the USA. In 1958, a powerful wind called a tornado, in Texas, USA, blew at 451 kilometres per hour.
The temperature in the centre of the sun is about 15,400,000 degrees Celsius. It burns 4,400,000 tonnes of hydrogen every second. The light from the sun is so powerful that it gives life to planet Earth.