We can't live without water, but now the water was polluted(污染）. It is the big problem（问题）. So we must find a way to work this problem out. Water is an important resource（资源）. In our daily life, we often leave the tap on after cleaning hands. Sometimes we litter in the river, so the water was polluted by us. I think we should save water. Don’t let the last drop（滴） of water on the Earth becomes our last tear（眼泪）.
1．This passage(短文) is mainly about the air pollution.
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