不知今天应该写哪篇,就挑了一篇题目堆立没有标时间的,麻烦大家改改! 我会回拍的~ Renewable resources of energy (Sun, wind, water) will soon replace fossils fuels such as gases, oil, and coal. Do you agree or disagree?
Although there is a rapid growth of using renewable resources such as solar energy, wind forces etc., I somehow disagree with the hypothesis presented in the subject. We can see certain facts at this time which show the time of fossil fuels being replaced has not yet come to us.
Applying renewable resources into practice has some limitations. We use wind to actuate windmills only in wide, flat plains where strong wind goes through very often, otherwise the windmills couldn't generate electricity. And taking advantage of the solar energy isn't so efficient that it can just be applied to some machinery using less power. Adversely, fossil fuels like petroleum and coal can be easily used in trains or automobiles. It's hard to imagine how a car can use wind forces to start its engine.
Renewable fuels limitation also imitates its young age comparing to the years of the technology development aiming at fossil fuels' utility. It has been just some decades since humans begun to realize the significance of energy saving and turned to researching those renewable fuels' application. As a result, motivation technology in the renewable resources field has not yet been mature and it cannot keep up with the high pace of modern life, which regards speed or efficiency as its principle. It obviously shows us that renewable fuels replacing traditional fossil resources still has a long way to go.
What takes the transition even a longer time is people’s lifestyle. Being accustomed to traditional fuels, it’s difficult for us to get used to this new fuels so swiftly. As we all can see, renewable resources has advantage over fossil fuels, however it has weakness as well, for example, inefficiency as I mentioned above. What we see is the international oil price has raised so much attention of experts, economics, even political officers, which reflects a fact that oil is so crucial that we can’t leave it for one day.
A worldwide sustainable development needs a wide spread of renewable energy application, but we must still see this initial state now we are in. Though that renewable fuels replace traditional fuels is not a legend, only by developing the technology of renewable resource step by step, can we reach that destination. |