Вариант 3

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

1. The radar has been used for the automatic control of ground transport.

2. Today plastics are being widely used instead of metals.

3. The construction of the dam has been completed this month.

4. The alloys were experimented upon in our lab.

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

1. It is the number of electrons within the atom that determines the properties of a substance.

2. The territory of Moscow is larger than that of London.

3. In London one must get used to the left-side traffic.

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

1. Some substances do not conduct heat.

2. Our plant is to increase the output of consumer goods.

3. Soon our industry will have new and cheap sources of energy.

4. These computers will have to perform millions of operations per second.

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

1. The hostel our students live in is situated not far from the metro station.

2. I think he has made a mistake in his calculations.

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

1. They promised to supply us with the necessary equipment.

2. The purpose of this book is to describe certain properties of metals.

3. The experiment to be carried out is of great importance for our research.

4. To convert chemical energy into electrical energy we must use an electrical cell.

6. Прочтите и устно переведите с 1-го по 4-й абзацы текста. Перепишите и письменно переведите 1, 2 и 3-й абзацы.

What is a hovercraft ?

1. Hovercrafts or cushion crafts are vehicles that support themselves a small distance above the ground or water surface on a cushion of air forced downward by vertical fans. Unlike road vehicles and boats, hovercrafts have no physical contact with the surface over which they float and, unlike aircraft, they are incapable of rising above this surface much over a foot or so.

2. As a vehicle the hovercraft requires three or four times as much power as an automobile or truck to operate. The same is true in comparison to boats and ships. On the other hand, cushion crafts require one half to one quarter the power needed to support an airplane or helicopter in flight.

3. Hovercrafts find application in those surface transportation tasks that cannot be done efficiently by automobiles, trucks, buses, trains, or boats. A hovercraft could ferry troops from conventional troopships to the shore at speeds over 60 mph. It would not be obliged to stop at the beach but would continue inland. Hovercrafts are used as ferries, taking passengers, cars and goods to and from the continent. Another application is for inter-island transportation in arctic waters, where winter ice often makes the waterways impassable for ships and where the ice is not solid or smooth enough to permit the passage of trucks or sledges.

4. Hovercrafts are propelled in forward flight by various methods. The most efficient method is propulsion with air propellers, but the rotating propellers may form a serious hazard to passengers and operators. Another method is by tilting the machine as a whole in the direction of intended motion so that a part of the high-pressure becomes available for the forward movement. Sometimes a combination of various methods is used.

7. Прочтите 4-й абзац текста и вопрос к нему. Из приведенных вариантов ответа укажите номер предложения, содержащего правильный ответ на поставленный вопрос:

How many methods are there to move the hovercraft forward?

1. only one most efficient method

2. two main methods

3. 3. various methods