Английский язык. Барабанова Н.Е - 23 стр.

                                                                                                                ВАРИАНТ 2
              THE PROPERTIES OF BUILDING MATERIALS
     1. Materials that are used for structural purposes should meet several           I. Перепишите и письменно переведите на русский язык
requirements. In most cases it is important that they should be hard, durable,   следующие предложения. Помните, что объектный и субъектный
fire resistant and easily fastened together.                                     инфинитивные обороты соответствуют придаточным предложениям
     2. The mosl commonly used materials are steel, concrete, stone, wood        (см. образец выполнения 1).
and brick. They differ in hardness, durability and fire-resistance. Wood is           1. The team is reported to have made a great deal of work.
the most ancient structural material. It is light, cheap and easy to work. But        2. We know reinforced earth to be first investigated by the French
wood has certain disadvantages : it burns and decays.                            engineer Vidal.
     3. Stone belongs to one of the oldest building materials used by man. It         3. All building materials to be used for structural purposes are divided
is characteristic of many properties. They are mechanical strength,              into 3 main groups.
compactness, porosity, sound and heat insulation and fire-resistance. Bricks          II. Перепишите и письменно переведите на русский язык
were known many thousands of years ago. They are the              examples of    следующие предложения. Обратите внимание на перевод зависимого и
artificial building materials.                                                   независимого (самостоятельного) причастных оборотов (см. образец
     4. Concrete is referred to as one of the most important building            выполнения 2).
materials. Concrete is a mixture of cement, sand, crushed stone and water.            1. An architect designing a building should be careful in calculations.
Steel has come into general use with the development of industry. Its                 2. Many thousands of years ago men settling in caves wanted to
manufacture requires special equipment and skilled labour.                       protect themselves from stormy weather.
     5. Plastics combine all the fine characteristics of a building material          3. A new type of reinforced concrete having been tested, the builders
with good insulating properties. It is no wonder that the architects and         began to use it widely.
engineers have turned to them to add beauty to modern homes and offices.
     6. All building materials are divided into three main groups: 1) Main           III. Перепишите и письменно переведите на русский язык
building materials such as rocks and artificial stones, timber and metals. 2)    следующие сложные предложения. Обратите внимание на то, как
Binding materials such as lime, gypsum and cement.            3) Secondary or    переводятся условные предложения (см. образец выполнения 3).
auxiliary materials which are used for the interior parts of the buildings. We       1. If a man builds a house of stone and wood, the construction is called
use many building materials for bearing structures binding materials are         a nonfireproof one.
used for making artificial stone and for joining different planes. For the           2. If the house had been built in stone it would not have          been
interior finish of the building we use secondary materials.                      destroyed by the fire.
                                                                                     3. It would be impossible to erect the new bridge without a new device.
    V. Прочитайте 6-й абзац текста и ответьте письменно                    на
следующий вопрос:                                                                   IV. Прочтите и устно переведите с 1-го по 5-й абзацы текста.
    What are main building materials?                                            Перепишите и письменно переведите 1,2,3 и 4-й абзацы.

                                                                                                           Пояснения к тексту
                                                                                     1. concrete- бетон
                                                                                     2. an innovation - инновация, новшество
                                                                                     3. aggregate - заполнитель
                                                                                     4. limestone - известняк