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{{B}}A Thirsty World{{/B}} The world is not only hungry; it is also thirsty for water. This seems strange to you, since nearly 75% of the earth’s surface is covered with water. But about 97% of this huge amount is from sea-water, or salt water. Man can only drink and use the other 3%—the fresh water that comes from rivers, lakes, underground, and other sources. And we cannot even use all of that, because some of it is in the form of iceberg (冰山) and glaciers (冰川). Even worse, some of it has been polluted. At the moment, this small amount of fresh water is still enough for us. However, our need for water is increasing rapidly. Only if we take steps to deal with this problem now can we avoid a severe worldwide water shortage l A. A limited water supply will affect industrial production. B. Every large city purifies and reuses its water. C. Purified water is not exactly as fresh as spring water. D. Oceans are the largest water source. 更多"下面有3篇短文，每篇短文后有5道题，每道题后面有4个选项。请仔细阅读短"的相关试题: [单项选择] 下面有3篇短文，每篇短文后有5道题，每道题后面有4个选项。请仔细阅读短文并根据短文内容回答其后面的问题，从4个选项中选择1个最佳答案。 {{B}}第一篇{{/B}}
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