第 2 页 共 r pollution, noise pollution and so on. Water pollution cause many kinds of disease that have negative effects on human beings, sometimes the diseases will take peoples life away. Dirty air will increase the rate of getting lung cancer. While the noise pollution will cause insomnia. Peoples health condition will be damaged. In my humble opinion, people should take measures to control the pollution. Recently, not only the government, but also individual has taken part in the action of protecting the environment. This is a good sign. Rivers are being cleaned, air is purified, and the people come to realize that the importance of protecting the environment. However, this is not enough, the problems are still exist. Not all of them have been solved. Some factories are still pouring dirty water into the rivers or give off the toxic gas into the sky. We should know that protecting the environment needs everybodys effort. 我们都知道，污染对生物有很大危害。在这个世界上，有很多不同类型的污染。例如：水污染，空气污染，噪音污染等等。水污染会使人们生病，甚至死亡。脏空气会使患肺癌的几率上升。而噪音污染会让人失眠。人们的安康水平会下降。
