Прочитайте текст. Materials used for construction purposes possess different properties. They differ...: ответ на тест 1104909 - Английский язык

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Materials used for construction purposes possess different properties. They differ in durability, strength, weight, fire-and decay-resistance and, naturally, cost. Wood, brick, stone, concrete, metals, and plastics belong to the most popular building materials used nowadays. They all have their advantages and disadvantages that are taken into account when designing a structure.
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Materials used for construction purposes possess different properties. They differ in durability, strength, weight, fire- and decay-resistance and, naturally, cost.
Wood, timber, brick, stone, concrete, metals, and plastics belong to the most popular building materials used nowadays. They all have their advantages and disadvantages that are taken into account when designing a structure.

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Aluminum is a considerably new structural material. For a long period it was considered to be rather expensive since its production required the use of electric power. Because of its relatively high cost, aluminum was not very popular as a construction material till the middle of the twentieth century. But now the situation is absolutely different. Aluminum and aluminum-alloys are extremely popular and widely used in various forms for construction purposes. The advantages of aluminum, compared with other popular metals, are its high strength combined with lightness.
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Wood has been a highly used 1_______ material since prehistoric times. Among other highly used building materials there are concrete, steel, brick, stone, and plastics. Being the oldest building material, 2_______ is also known to be the only naturally growing organic material. Among other advantages of wood there are its low cost, 3_______ weight, and high workability. But, as any other construction material, wood has its 4_______. The main ones are the following – it is not fire-resistant, it easily burns.

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Brick, stone, and timber are known to be the oldest building 1_______. Bricks belong to artificial materials. Their 2_______ started in prehistoric times. Since then they have been produced and tested in all types of climate and in many 3_______. Thousands of years ago the builders in Egypt already knew the advantages of bricks and used them for 4_______.

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Concrete is considered to be a universal material for construction. Different 1_______ of concrete can be used practically for every building purpose. The raw materials for producing 2_______can be found in every part of the world. There exist different ways of producing concrete. It can be 3_______ by mixing the ingredients and pouring the mixture into position on the very site of building. Concrete can also be produced in a factory, and 4_______ as a material for manufacturing prefabricated blocks.