Вопрос № 933002 - Английский язык

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Building a road
1_______.
Then the ground is leveled. This is done by cutting the top layer until it is flat and level.
2_______. Finally the top layer is added. 3_______. If it is a blacktop road, layers of hot tarmacadam are poured onto the gravel and pressed down using rollers. The total layer of blacktop materials is approximately 300 mm thick. If it is a concrete road, the concrete is laid on top of the gravel. 4_______.

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Cement is the most important component of concrete. 1_______. Concrete may be considered an artificial conglomerate of “crushed stone, gravel or similar inert material with a mortar”. A mortar is a mixture of sand, screenings or similar inert particles with cement and water. 2_______. The most accurate method of measuring proportions is to weigh the required quantities of each material. This may be done whether the proportions are based upon volumes or weights. 3_______. It is also widely used in large building constructions. 4_______.

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1_______. Early man probably got the idea of a bridge from a tree fallen across a stream. 2_______. Timber beams were embedded into the banks on each side of the river with their ends extending over the water. These made simple supports for a central beam reaching across from one bracket to the other. 3_______. A simple bridge on the suspension principle was made by early man by means of ropes, and is still used in countries such as Tibet. Two parallel ropes suspended from rocks or trees on each bank of the river, with a platform of woven mats laid across them, made a secure crossing. 4_______. When the Spaniards reached South America, they found that the Incas of Peru used suspension bridges made of six strong cables, four of which supported a platform and two served as rails.

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Architects have done some very good work in designing new schools. Many of these are prefabricated, which means that as much of the building work as possible is done not on the building site, but in factories where mass production methods can be used. The parts are taken to a site and put together there. Children who attend the best of these new schools are very happy. Their classrooms are light and big, and they have a fine large assembly hall. The children have dinner at school, and there is a dining-hall completed with modern kitchen.
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The parts are taken to a site and …

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Most of the time of a modern man is spent within the walls of some building. Houses are built for dwelling; large buildings are constructed for industrial purposes; theatres, museums, public and scientific institutions are built for cultural activities of the people. The purposes of modern buildings differ widely, but all of them originate from the efforts of primitive men to protect themselves from stormy weather, wild animals and human enemies. Protection was looked for everywhere. In prehistoric times men looked for protection under the branches of trees, some covered themselves with skins of animals to protect themselves from cold and rain; others settled in caves.
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Most of the time of a modern man is spent …

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In the country ordinary people lived in a simple one-storey cottages which did not differ much from the mud and stone huts of an earlier age.
The rich people in the country, on the other hand, built huge castles with thick walls and narrow windows. These castles were built not only as dwellings, but also to stand up to enemy attack and to be strong bases in time of war. The earliest houses of which anything is known are those of ancient Egypt. They were built of bricks dried in the sun. Some of them were built around a courtyard or garden with rooms opening into it.
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The earliest houses of ancient Egypt were …