水是人类赖以生存的必不可少的物质。人体血液中含有80%以上的水,组织细胞必须依赖水才能完成新陈代谢的功能。而这些水绝大部分靠饮水补充。人们最早饮用自然的水。但现代工业的发展,使各种水源均受到不同程度的污染,如农药、洗涤剂、有机致癌物、细菌及有害重金属等。它们会随饮用水进入人体内,长期积 Water is an indispensable material upon which mankind depends. Human blood contains more than 80% of water, tissue cells must rely on water to complete the metabolic function. Most of these water supplements by drinking water. People first drink natural water. However, the development of modern industry has polluted all kinds of water sources to varying degrees, such as pesticides, detergents, organic carcinogens, bacteria and harmful heavy metals. They will enter the body with drinking water, long-term plot