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ation, more and more water is needed. The most serious problem China is facing is water pollution. It has spread to rivers, lakes, and even the seas or oceans. When dry weather comes, the water problem will go from bad to worse.ª¥

In order to survive, man has to be wise enough to treasure water and try to prevent it from being polluted. Man should also know that all resources in the world are limited, including water. Man should reasonably explore water and make good use of it. Otherwise man will be punished by nature. To treasure water is to treasure life. To protect our environment is to protect ourselves.