| The world is not only hungry; it is
also thirsty for water. This may seem strange to you because nearly 75% of the
earth’s surface is covered with water. But about 97% of this huge amount is
seawater or salt water. Man can only drink and use the other 3%—the freshwater
that comes from rivers, lakes, underground, and other sources. And we cannot use
all of that, because some of it is in the form of iceberg and glaciers (冰河).
Even worse, some of it has been polluted. However, as things stand today, this small amount of fresh water, which is constantly being replaced by rainfall, is still enough for us. But our need for water is increasing rapidly almost day by day. Only if we take steps to deal with this problem now can we avoid a severe worldwide water shortage later on. A limited water supply would have a bad effect on agriculture and industr A. the world has not enough fresh water to meet our future needs B. people all over the world are thirsty for water now C. we are now facing a serious problem of worldwide water shortage D. people in the world all feel hungry and thirsty [填空题]Not only the mother but also the children (kill) ______ in the fire.
我来回答: 提交
|
