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本帖最后由 bruce520 于 2010-4-11 21:42 编辑
4.11的作业
Do you agree or disagree with the following statement? Renewable sources of energy (sun,
wind, water) will soon replace fossil fuels (gas, oil and coal).
It is undeniable that energy depletion is one of the biggest problems that our human encountered. However, with the development of the science and technology renewable sources of energy appear in our life. So many people share the belief that the renewable sources can displace the old one soon. As far as to me, I firmly consist that the renewable sources of energy will take place the traditional ones because of their lower or even no pollution and larger storage one day, but not soon.
Most important of all, the outstanding advantage of low even no pollution destines that the renewable sources can displace the old fuels one day. As we know, at the time the traditional sources bring us the bright industry civilization, they also produce the negative problem of pollution. Most types of pollution such as the air pollution, water pollution are directly contributed by the burning of coal and oil. However, the new sources can avoid of those issues. Another famous example of the old sources’ problem may be the depletion of the ozone. Nowadays, few things are as likely spark public interest as that involving the ozone depletion. Due to some fuels with florin are been burn, make all the living being of the earth expose to the harmful ray.
Nevertheless, if we use the new sources some like the sun, wind or water, this problem will not be existed. For the second, the large storage of the new sources makes a necessary condition that they can play the main role of the fuel consumption for the future society. The traditional sources of energy get a problem of shortage, which become more and more serious, making most countries both the developed and developing are beginning to search some new ones to solve the problem. According to an official statistic data, all the storage of coal of the world can only last for thirty years. Envision the terrible things that the factory run without coal, house burn without coal to warm, new and sources’ great role in the future cannot be deniable.
Nonetheless, as the limited technology advancement, the process of the clear sources taking place the traditional ones completely is a long time walk. Although the demand of new clear sources increases so rapidly, the modern technology cannot make all the usage of new sources to meet the increased requirement. For example,
the most way to use water to produce energy are the generating electricity and decomposing water, however, another significant way which have been considered for long periods by the scientist is not been realized, using the energy of the wave.
In the final analysis, the future of the renewable sources is very promising for both their two major advantages low even no pollution and great storage. However, due to some limit of technology, it is need time for the new sources to replace the old one. Maybe our society should invest more attention to. |
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