题文

阅读理解

Every object has weight. But the center of its weight is not always in the middle of the object. If the top of an object is heavier than its bottom, it will fall over easily. We say that its center of gravity(重力) is high. But if the bottom is heavier, it won't fall easily. Then we say that its center of gravity is low.      Look at the first picture. This empty box must fall over, because its center of gravity (C) is not above the line of its bottom (AB).      Now look at the second picture. There are some heavy things in the bottom of this box. It will not fall, because its center of gravity is above its bottom. 1. Box _____________will not fall.. 2. The main idea of the passage is _________. A. why things fall over   B. a low center of gravity C. a high center of gravity D. that everything has weight

题型：阅读理解  难度：中档

答案

1-2 CA

据专家权威分析，试题“阅读理解 Every object has weight. But the center of its we..”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。