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Text C

NON-TRADITIONAL RENEWABLE SOURCES OF ENERGY

It is known that much is being done in the world today for the development of non-traditional sources of energy. Without them the Earth cannot support its present population of 5 billion people and probably 8 billion people in the 21st century.

Now we are using traditional power sources, that is oil, natural gas, coal and water power with the consumption of more than 50 billion barrels per year. It is evident that these sources are not unlimited.

That is why it is so important to use such renewable sources of energy as the sun, wind, geothermal energy and others. Research is being carried out in these fields.

One of the most promising (перспективный) research is the development of power stations with direct transformation of solar energy into electricity on the basis of photoeffect. It was Russia that was the first in the world to develop and test a photoelectric battery of 32,000 volts and effective area of only 0.5 sq.m., which made it possible to concentrate solar radiation. This idea is now being intensively developed in many countries.

However, the efficiency of a solar power station is considerably reduced because of the limited time of its work during the year. But it is possible to improve the efficiency of solar power station by developing different combinations of solar power stations and traditional ones–thermal, atomic and hydraulic. Today some engineers are working at the problem of developing electric power stations with the use of a thermal-chemical cycle. It will operate on products of the transformation of solar energy, whereas the “solar” chemical reactor uses CO2 and water steam of the thermal power station. The result is that we have a closed cycle.

All these advances in developing new sources of energy and improving the old ones help to solve the energy problem as a whole and they do not have negative effects on the environment.

Функции глаголов ‘should’ и ‘would’

Should Would
1 2
1. Вспомогательный глагол, употребляемый в косвенной речи во временной форме Future – in – the Past (будущее в прошедшем).
I said that I should come in time. Я сказал, что приеду вовремя. He said that he would come in time. Он сказал, что приедет вовремя.
2. Вспомогательный глагол, употребляемый в сослагательном наклонении. а) в условных предложениях
We should introduce this method if it were efficient. Мы бы внедрили данный метод, если бы он был эффективным. They would introduce this method if it were efficient. Οʜᴎ бы внедрили данный метод, если бы он был эффективным.
б) в придаточных предложениях
После оборотов it’s important (важно), necessary (крайне важно), required (требуется), desirable (желательно) и др. that … It is necessary that you should finish your work on time. Вам крайне важно заканчивать работу вовремя. После глаголов suggest (предлагать), insist (настаивать),demand (требовать), recommend (рекомендовать) и др. that… He insists that you should do it at once. Он настаивает на том, чтобы вы это сделали немедленно. В обстоятельственных предложениях цели We took a taxi so that we should not miss the train. Мы взяли такси, чтобы не опоздать на поезд. После глагола ‘to wish’ I wish she would come soon. (impossible wish for a future change) Я хотела, чтобы она пришла поскорее. (Жаль, что она придет нескоро) (нереальное желание, относящееся к будущему).
в) в простых предложениях To go there would be useless. Идти туда было бы бесполезно.


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