4. What is the industrial progress of mankind based on?

5. Whish is the first widely applied method of producing electricity at present?

6. Which is the second way of generating power?

7. What (how high) is the efficiency of these two methods?

8. What do we use the energy of hot waters for?

9. When and where did the first power station using ocean tides begin operating in Russia?

10. What can you say about the energy of the sun?

11. What fuel is the most promising for the production of electricity?

12. Is the efficiency of generating power from atomic fuel high or not?

13. What problem do scientists pay great attention to?

14. How high may the efficiency of devices converting electricity directly from the fuel be?

V. Прочитайте текст и выполните задание после текста hydrogen – source of power

Scientists consider hydrogen a very promising energy source. The reserves of hydrogen are practically unli­mited. Per unit of weight it contains almost three times more thermal energy than benzene. Besides, hydrogen can be used as fuel in transport, industry and home.

Hydrogen is easy to transport and store. It can be transported over large distances using conventional pipe­lines. It can be accumulated and kept for a long time either in conventional or natural reservoirs.

Scientists have found many ways of producing hydro­gen — basically from ordinary water. And large volumes of this fuel can be obtained from coal, whose global re­serves are tremendous. There is also an idea of using nuclear power plants to generate hydrogen. Scientists hope to use the energy of the sun, wind and tides to obtain hydrogen.

In several countries car engines fed by hydrogen have been tested successfully. Tests have also shown that adding five to ten per cent hydrogen to benzene increases engine efficiency by 40-45 per cent.

What is still-holding back the use of hydrogen as fuel, and what has to be done in order to apply it extensively in the economy? The main reason is that now it is more expensive than mineral fuels, but in the near future hydro­gen can be made cheaper to obtain. This new kind of ener­gy opens up new prospects in aviation, metallurgy and some other industries.

Закончите предложения в соответствии с содержанием текста. Полученные предложения переведите на русский язык.

1. Scientists consider hydrogen ….

2. Hydrogen can be used as fuel in transport, industry and home because …

3. Hydrogen can be produced by different ways….

4. Adding a few per cent of hydrogen to benzene ….

5. Hydrogen is not used widely as a fuel at present because … but in future …

Control workn 3

Для того, чтобы выполнить контрольную работу N 3, необходимо усвоить следующие разделы курса английского языка по рекомендованному учебнику.

1. Многофункциональность глаголов “to be” и “to have”

2. Многозначность английских слов “one”, “that”, “it”

3. Неличные формы глагола – герундий (Gerund), причастия настоящего времени (Participle I) и инфинитива (Infinitive): функции и перевод.

I. Многофункциональность глагола to be.

Present Past Future

Am, is are was, were will be

В предложении глагол to be может быть:

1. смысловым глаголом со значением быть, находиться. В настоящем времени ”to be” в этом случае часто не переводится.

2. Связкой в составном именном сказуемом со значением быть, являться, состоять, заключаться, когда за ним следует существительное с предлогом of , прилагательное, числительное.

Physics is a natural science. Физика – естественная наука

The calculations will be very Расчеты будут очень сложными.

сomplicated

This problem was of great Эта проблема представляла для