标签：话题作文 话题 英语四级作文
字数：900字
提要：Water Is the Source of Life由英语作文网整理收集 Water Is the Source of Life As the source of life, water is indispensable (不可缺少的) to human beings. People consume much water in production and daily life. Agriculture and industry account for most of mankind's water usage. Without adequate water supplies, human future is threatened. Nowadays water shortages touch a large percentage of world popu..