Вариант №4.

I. Перепишите предложения, определите степени сравнения прилагательных или наречий, переведите на русский язык.

1. London is the largest city in Europe.

2. This film is twice as funny as that one.

3. She speaks English better than he.

4. Tree is one of the largest and oldest plants on the Earth.

5. The soil is more fertile than that one.

II. Перепишите предложения, определите видовременные формы глаголов и укажите их инфинитив, переведите предложения на русский язык.

1. He did not go to the country.

2. We will go to the library in the evening.

3. We went home as it was cold.

4. They had done much work by 7 o'clock.

5. They have seen them this month.

III. Перепишите предложения, подчеркните в каждом из них модальный глагол или его эквивалент, переведите предложения на русский язык.

1. I am to be at the library.

2. She is to come.

3. You must look through this journal.

4. May I take your dictionary?

5. He could play chess well.

IV. Перепишите предложения. Подчеркните причастия, установите функции каждого из них (определение, обстоятельство, часть сказуемого). Переведите предложения на русский язык.

1. Preparing for the examination she worked at the library.

2. Speaking she entered the room.

3. It was not snowing.

4. A reading student is my friend.

5. I am going to the library now.

V. Прочитайте и устно переведите весь текст. Письменно переведите абзацы 2, 5

METALWORKING PROCESSES

Metals are important in industry because they can be easily deformed into useful shapes. A lot of metalworking processes have been developed for certain applications. They can be divided into five broad groups:

1. rolling,

2. extrusion,

3. drawing,

4. forging,

5. sheet-metal forming.

During the first four processes metal is subjected to large amounts of strain (deformation). But if deformation goes at a high temperature, the metal will recrystallize - that is, new strain-free grains will grow instead of deformed grains. For this reason metals are usually rolled, extruded, drawn, or forged above their recrystallization temperature. This is called hot working. Under these conditions there is no limit to the compressive plastic strain to which the metal can be subjected.

Other processes are performed below the recrystallization temperature. These are called cold working. Cold working hardens metal and makes the part stronger. However, there is a limit to the strain before a cold part cracks.

Rolling is the most common metalworking process. More than 90 percent of the aluminum, steel and copper produced is rolled at least once in the course of production. The most common rolled product is sheet. Rolling can be done either hot or cold. If the rolling is finished cold, the surface will be smoother and the product stronger.

Extrusion is pushing the billet to flow through the orifice of a die. Products may have either a simple or a complex cross section. Aluminium window frames are the examples of complex extrusions.