Вопрос № 223801 - Английский язык

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Exploration for oil around the Scottish shores has become a very big 1_______. This is an account of how oil is extracted from beneath the North Sea.
To get the oil out, four production problems will be used: huge structures, three made of concrete and one of 2_______, designed to work for 25 years or more. Instead of floating, they are planted firmly on the sea bed and designed to stand up to the worst of sea and weather. From each platform a series of holes is 3_______, some going almost straight down, others drilled at an 4_______ away from the platform so that a large volume of oil can be extracted. The oil does not lie there like a great swimming pool full of black liquid, it is trapped in small spaces between the porous rocks. To get as much as possible out many separate holes have to be drilled.

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The ZX 1000 electric 1_______ has two speeds: the fast speed is 3,000 rpm and the slower speed is 1,000 rpm. Adjust the speed according to the 2_______ of material and the size of the hole. For example, use the faster speed for a soft material such as 3_______ to drill holes smaller than 10 millimetres (10 mm) in diameter but choose the slower speed for holes between 10 and 25 mm. However, for steel, a 4_______ material, use the faster speed for holes smaller than 6.5 mm and choose the slower speed to drill holes between 6.5 and 10 mm.

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A variety of housing has been provided in new towns, including two-storey houses, bungalows, flats and maisonettes. The greatest demand is for 1_______ with gardens. Many families moving to the new towns have previously lived in overcrowded 2_______ in flats or rooms in the centres of cities and want the space and freedom of a house and a garden where children can play in safety. In view of this preference, care is taken to provide houses of varied 3_______ types, avoiding monotony and ensuring privacy. Houses may, for example, be built in courts, closes, terraces or other groupings and set various distances from, and angles to, roads. A number of 4_______ such as bricks and cements of different colours and panels of natural timber are also used.

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A variety of housing has been provided in new towns, including two-storey houses, bungalows, flats and maisonettes.
The 1_______ usually have two or three bedrooms and one large or two smaller living rooms, though a number of larger and smaller dwellings are also provided; all have kitchens and bathrooms with hot and cold 2_______ and inside lavatories. Many have 3_______ and broadcast relay systems whereby radio and TV programmes are received at a central point and distributed by wire to listeners and viewers. At Washington the development corporation has designed a 4_______ house which can be adapted to meet the changing needs of growing families: the house has all the traditional living areas complete on the ground floor and an upper floor free from dividing walls and with windows and plumbing arranged to enable householders themselves to provide room areas to meet their requirements.

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The first scientists to study colour was Sir Isaac Newton. He was an English 1_______ who lived from 1642 to 1727. Newton was the first person to 2_______ white light into different colours.
In 1861 another English scientist, James Clerk Maxwell, showed that he could make other colours by mixing the primary colours – red, blue and yellow – in different ways. These other colours are called secondary and tertiary colours. We make secondary colours by 3_______ two primary colours together. For example, red and yellow become orange, yellow and blue become green, and blue and red become violet. We make tertiary colour with one 4_______ colour.
We can make a room look bigger or smaller, hotter or colder by using colour. Green and blue are cold colours. They can also make a room look bigger. Red, orange and yellow are hot colours. They can make a room look smaller.

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There have been many 1_______ number systems in the world. A long time ago the Babylonians counted in 60s and today computers count in 2s – using only 1 and 0. We call this 2-number system the binary system. Most systems, however, count in 10s. This is because we have 10 2_______. We call this system the decimal system from ‘decem’, the Latin word for 10.
The Romans used letters like I, V, X and C to count in 10s but these are not very easy to use. The numbers most people use today come from India. We think they were invented by the Hindu people there. In the Hindu system the place of each 3_______ is important. For example, 832 is a different number to 238 or 382. The Hindu system was also used by the Arabs, and we now call them Arabic numbers. In about the 12th century an Italian called Leonardo Fibonacci wrote a book about 4_______ numbers, and people all over Europe began using these numbers.
We do not know who invented the decimal point, but we know that in 1585 a man called Simon Stevin wrote  a book about the decimal point. The book was called ‘The Tenth’. Before we knew about the decimal point, we had to use fractions like Ѕ and system ѕ when we talked about numbers smaller than 1.