II вариант

Задание 1

Перепишите следующие предложения, определите в каждом из них видо-временную форму и залог глагола-сказуемого (см. образец выполнения 1). Переведите предложения на русский язык.

1. The balloon was filled with hot smoke.

2. The new apparatus has been installed in the laboratory.

3. The ships are generally driven by steam turbines.

4. The new principle of the construction will be insisted upon by the invention.

Задание 2

Перепишите следующие предложения и переведите их на русский язык, обращая внимание на разные значения слов it, that, one.

1. It is presumed that the ship's radio equipment was put out of action during the fire.

2. One must be careful working with sharp tools and motors.

3. An ideal soil is one which is never waterlogged.

Задание 3

Перепишите следующие предложения и переведите их на русский язык, обращая внимание на разные значения глаголов to be, to have, to do.

1. We are to test this device.

2. The fertilizers had all the necessary elements.

3. Some substances do not conduct heat.

4. Science is important to everyone who is affected by modern technology.

Задание 4

Перепишите следующие предложения и переведите их на русский язык, обращая внимание на бессоюзное подчинение.

1. Every language consists of words we put together in sentences.

2. He said he would make a report at the conference.

Задание 5

Перепишите следующие предложения и переведите их на русский язык, обращая внимание на функцию инфинитива.

1. To obtain these data was easy.

2. Bell was the first to invent the telephone.

3. The commodity is too expensive to be in large demand.

4. The problem to be solved is of great importance for this branch of science.

Задание 6

Прочитайте, перепишите и письменно переведите текст.

Polymers

Life depends on organic polymers. Nearly all the material needs of man could be supplied by natural organic products. The list of these materials and things made from them might be very long: wood, fur, leather, wood, cotton, silk, rubber, oil, paper and so on. The organic polymers which these things are made from include: proteins, cellulose, starch, resins and a few other classes of compounds.

Synthetic polymers possess several of the properties required in a structural material. They are light in weight, easily transported, easily repaired, highly resistant to corrosion and solvents, and satisfactorily resistant to moisture. It would be necessary to add that they have long- lived durability and resistance to high temperature.

It was only in the 20th century that scientists began thorough investigation of these materials. Having used some powerful physical instruments, an electron microscope, viscosimeter, they could have revealed the polymers in all their intricacy. Their molecules were incredibly large.

The giant molecules can be composed of a large number of repeating units and they are given the name “polymer” from the Greek word “poly” (many) and “meros” (a part). Many polymers have the form of long flexible chains.

Now the chemists synthesize artificial polymers. This has led to the establishment of industries producing synthetic fibers and numerous polymeric materials.