题文

阅读理解。

Trees are useful to men in three important ways: They provide them with wood and other products (产品), they give them shade (树荫), and they help to prevent drought and floods.    Unfortunately, in many parts of the world, men have not realized that the third of these services is the most important. In their eagerness (渴望) to make money from trees, some people have cut trees down in large numbers, only to find that without them they have lost the best friends they had. And besides (此外), they are usually too careless to plant and look after new trees, so the forests slowly disappear.    This doesn't only mean that men will have fewer trees. The results are even more serious: where there are trees, their roots (根) break up soil-allowing the rain to sink in and also bind (固定) the soil, thus (因而) preventing it from being washed away easily, but where there are no trees, the rain falls carrying away the rich top-soil. When all the top-soil is gone, nothing remains (剩下) but worthless desert.

1. Land becomes desert after all trees arte cut down, because ____.

[     ]

A. there is too much rain B. there are no more trees to keep the rich top-soil from being carried away by floods C. there is a strong wind D. roots of trees break up the soil

2. People cut down many trees because ____.

[     ]

A. they wanted to get wood from them B. they wanted to get money from them C. they didn't realize the importance of them D. all the above

3. Which of the following is NOT true?

[     ]

A. Tree roots can make the top-soil rich and the ground hard. B. Trees can make the rain sink into the ground. C. Trees can prevent drought and floods. D. Tree roots can take away the top-soil

题型：阅读理解  难度：偏难

答案

1-3: BDD

据专家权威分析，试题“阅读理解。 Trees are useful to men in three important ways: ..”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。