题文

阅读理解.

The World's Water Shortage     The world is not only hungry, but it is also thirsty for water. This may seem strange to you, since nearly 70 percent (百分比) of the earth's surface is covered with water. But about 97 percent of this huge amount is sea water, or salt water. Man can only drink and use the other 3 percent－the fresh water from rivers, lakes, underground, and other sources (资源). And we cannot even use all of that, because some of it is in the form of icebergs and glaciers (冰川). Even worse, some of it has been polluted.     However, as things stand today, this small amount of fresh water is still enough for us. But our need for water is increasing (增加) rapidly－almost day by day. Only if we take steps to deal with this problem now can we avoid (避免) a severe (严重的) worldwide water shortage later on.     We all have to learn how to stop wasting our valuable water. One of the first steps is to develop ways of reusing it.     Today in most large cities, water is used only once and then sent out into a sewer system (下水道). From there it returns to the sea or runs into underground storage tanks. But it is possible to pipe used water to a purifying (净化) plant. There it can be treated with chemicals so that it can be used again, just as if it were fresh from a spring.     But even if every large city purified and reused its water, we still would not have enough. All we'd have to do to make use of the vast reserves (贮备) of sea water in the world is to remove the salt.     If we take these steps we'll be in no danger of drying up.

1. The world is thirsty for water because we can only use _____ percent of the water covering the surface of the earth.     A. 3     B. more than 3     C. less than 3     D. 97 2. Which of the following statements is Not true?     A. As things remain unchanging, this small amount of fresh water is still enough for us.     B. Our need for water is becoming larger and larger.     C. There will be no water shortage in the future.     D. We should take steps to deal with the water shortage problem. 3. To reuse water, we should _____.     A. treat it with chemicals     B. use it only once     C. send it out into a sewer system     D. make it flow into underground tanks 4. In order to have enough water, we should also make use of _____.     A. icebergs and glaciers     B. sea water     C. rivers and lake     D. underground water 5. In the passage, the writer tells us _____.     A. to make enough water     B. to pay more attention to the water shortage problem     C. to pipe used water to a purifying plant     D. to reuse the water

题型：阅读理解  难度：中档

答案

1-5:  CCABB

据专家权威分析，试题“阅读理解. The World's Water ShortageThe world is not only ..”主要考查你对  科教类阅读  等考点的理解。关于这些考点的“档案”如下：

科教类阅读

考点名称：科教类阅读

• 科普类的阅读：
  科普类的阅读理解包含介绍科学知识、社会知识的短文。阅读这类短文时，要以事实为中心进行思考，抓住事物的特征、用途、相互关系等。
  如果是介绍社会现象的文章，要掌握所谈现象的内涵。

• 答题技巧：
  1. 加强整体意识，把握文章的主要内容。在阅读的时候可给段落标上序号，并给重要的句子和
     关键词做上记号，尤其是各段中心句，为答题提供更快捷更多的信息源。
  2. 审清题干，发觉和把握试题中有效的提示性信息，确认命题的角度、阅读范围和答题方式。
  3. 定位阅读，强化对应意识。同时要注意原文利用和自我加工相结合。