1. Pollution 1. 污染对人类有害 2. 为防止污染，3. 近年来采取了一些措施 4. 然而，5. 污染问题尚未完全解决 Pollution is harmful to human beings. Polluted water causes many kinds of diseases such as diarrhea, enteritis, etc. And sometimes these diseases e
Water pollution is a serious problem now. Hundres of dead fish can be found on the surface of Haihe beeause of serious pollution. Besides Haihe, there are some other rivers like this. We can't live without water, so we must keep'the water elean to p
