新起点大学精读教程4作文

新起点大学精读教程4作文
Why Should We Attach Importance to Both Theory and Practice?
It is generally accepted that theory is based on practice. Galileo, for example, based his studies of natural laws on
experimentation and observation. It was by observation that he proved the theory that the sun is the center of the solar system. Likewise, Comrade Deng Xiaoping's theory concerning the building of socialism with distinctive Chinese features has been established on the basis of revolutionary practice in China today. Beyond doubt, there can be no scientific theory without practice. It is also certain that theory, in turn, serves practice. For instance, astronomers apply theories about the heavenly bodies to foretell eclipses and suchlike. Another case in point is, again, Comrade Deng Xiaoping's theory, which guides the Chinese people on their way to building a prosperous and powerful socialist society. Practice without theory as its
guide is like a ship sailing into a port without a pilot. The
consequences can be disastrous. In view of the above, we can safely conclude that it is highly important to combine theory with practice in our work. We must never ignore one in favor of the other.
The modern world gets most of its energy needs from coal, oil and natural gas. These sources have one thing in common: once they have been taken from the depths of the earth, they can never be replaced. Naturally, their reserves tend to be on the decrease. However, as economies develop, the world demand for energy is growing enormously day by day. It is quite obvious, therefore, that we are threatened with the
approach of energy crisis. What, then, can we do to prevent energy crisis? The answer lies partly in practicing conservation of resources. Large amounts of energy are being wasted in all sections of the modern society so that the present major energy sources will be used up much sooner than expected. If we heighten our awareness of the urgent need to conserve energy, however, we will be able to make the sources last a lot longer. Of course, conservation is not the perfect solution to
the energy problem. Eventually, sources like coal and oil will be exhausted. But there are many other energy sources that can be used in place of them, such as nuclear power, wind energy and solar energy. Scientists are now doing their best to develop new sources of energy, which is our hope for the future. We are convinced that so long as both solutions are applied, energy crisis can be prevented。