IV 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. Helicopters are used for carrying mail and passengers on short routes.

2. The temperature has been maintained at the point of 20 degrees since the beginning of the experiment.

3. The plans of the next year are being discussed at the meeting.

4. The bridge was designed by a well-known engineer.

Задание 2

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

1. It is known that there are rich deposits of coal in that district.

2. This good is in great demand as it is of high quality.

3. One can classify labour into productive and unproductive.

Задание 3

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

1. The farmer has to study thoroughly the conditions on his farm to get higher profit.

2. We are to study the main laws of physics.

3. Plastics are durable and simple in production materials.

4. Now every society has a money economy based on coins and paper bills.

Задание 4

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

1. We know the English language has a fixed word order.

2. This is the man I told you about.

Задание 5

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

1. They burnt coal to warm the house.

2. The conference to be held will discuss questions dealing with communication problems.

3. Specialists face many difficulties to solve the technical problems.

4. To manufacture this model of equipment is profitable for producers.

Задание 6

Прочитайте, перепишите и письменно переведите текст.

Radiant Energy

For many years men used light and heat energy from the Sun and from fires but they did not understand the nature of light and heat until quite recently. Near the end of the 19th century, scientists began to think of light as waves travelling through space, somewhat the way that waves move over water.

As the problem was explored, it seemed that there should be other forms of energy, which travel in the same way that light does.

This study led to the discovery of radio waves which are somewhat like light waves. They both travel at the same speed and go out in all directions, or radiate, from one sport. They have been called radiant energy.

Radiant energy waves are unlike anything else in the Universe. Radiant energy waves need no material to carry them from place to place. This seemed so unbelievable to scientists that for years they pretended that space was filled with a substance called ether, through which light, radio and other waves of radiant energy travelled.

The number of waves which are passing a given point in a second is the frequency. In sound, we know that the greater the frequency, the higher the pitch that we hear. Experiment shows that the short, high-frequency light waves are seen as violet in colour, while the longer low-frequency waves are seen as red in colour. Some radiant energy waves, such as X- rays, are so short and have so high frequency that they cannot be seen at all. Others, such as radio waves, are so long and have so low frequency that you do not know they are present. Scientists learn about them only by experimenting and using sensitive instruments.

It is known that a current in a wire produces a magnetic field about it. If the current goes back and forth, or oscillates, a wave is set up which moves through space with the speed of light. These are radio waves. They have all the properties of other waves of radiant energy.

Radio broadcasting stations, television studios, radar sets and signals from satellites all depend upon radiant energy waves for their operation.