【简答题】阅读理解。 Valuing water Human beings use a little less than half the water available worldwide. Yet shortages and droughts (干旱) are causing starvation and poverty in some areas, and industrial and agricul...
【单选题】Water is one of the most important natural resources in the world. Everywhere, water use is【61】. Humans already use fifty-four percent of all the【62】 water in rivers, lakes and underground. There are ...