Question

阅读短文，根据语篇要求填空，使短文通顺、意思完整。每空限填一词。

Although the world is hungry, it is even thirstier. While nearly 3/4 of the earth is covered with water, we are short of drinking water. Actually about 97% of the water on the earth 1. sea water.

2. can we deal with the problem of lacking drinking water? Firstly, we should save water instead of wasting it. Second, we 3. protect our water resources and not pollute them. Lastly, we should discover ways to reuse water. Scientists 4. got some achievements in this field. But people's need for water is increasing day by day. We still don't have enough water.

The sea seems to have the best answer.There is plenty 5. water in the sea. But we need to take the salt away from the sea water. This is very expensive. Many scientists can find cheaper ways to do it. Without doubt, we will solve the problem gradually.

Answer

1.is

2.How

3.should

4.have

5.of

【解析】

【主旨大意】本文是一篇说明文。讲述了世界上水资源短缺的现状，并提出了一些解决方法。

1.句意：其实地球上百分之九十七的水都是海水。分析句子结构可知本句缺少谓语，且属于主系表结构，应填be动词。此处描述客观事实，所以用一般现在时。主语是单数概念，谓语动词用单数。故填is。

2.句意：我们怎样解决缺少饮用水的问题？分析句子结构可知此处缺少疑问词，根据后文的“Firstly; Second; Lastly”可知此处缺少询问方式的疑问词，how怎样，符合语境。且deal with强调处理的方式、方法，常与how连用。故填How。注意句首单词首字母应大写。

3.句意：第二，我们应该保护水资源不污染他们。根据上一句“Firstly, we should...”可知此处应用should表示建议。故填should。

4.句意：科学家已经在这个领域取得了一些成就。分析语境可知，此处是过去发生的动作对现在产生的影响，所以用现在完成时。故填have。

5.句意：海洋里有大量的水。plenty of 许多，大量，固定搭配。故填of。