题文

阅读理解。  Light reflecting     You cannot see any object unless light from that object gets into your eyes. Some of the things you see  give off light of their own. The sun, the stars, a lighted lamp are the examples that can be seen by their own   light. Such things are luminous, most of the things you see are not giving off light of their own. They are  simply reflecting light that falls on them from the sun or some other luminous body. The moon, for  example, doesn't give off any light of its own. It is nonluminous. You see it because sunlight falls on it and  some of it reflects in our direction. So moonlight is only second-hand sunlight.      When you look at a book, it sends some of the light which falls on it to your eyes, and you see the  book. If light could be kept out from where you are so that there would be no light from the book to  reflect, then you could not see the book even with your eyes wide open. Light travels so fast that the time  in which it travels from the book you are reading to your eyes is as short as if there were no time at all.  Light reaches us from the moon, which is about 380, 000 kilometers away, in only a little more than a  second. 1. You can see the book because _____.      A. your eyes are close to it             B. it reflects some of the light     C. it has light of its own               D. your eyesight can get to it 2. The underlined word "luminous" means "_____".     A. can't be seen         B. can be seen         C. giving off light         D. not like sunlight 3. _____ have light of their own.     A. The sun and the moon                 B. The stars and the earth      C. The sun and the stars                 D. The moon and the earth 4. Light travels about _____ kilometers per second.     A. 380,000           B. 100,000           C. 400,000           D. 190,000 5. Which of the following is TRUE?     A. All the things you can see give off light.     B. Light from the book is much shorter than that from the moon.     C. The moment you open your eyes, the light from the book travels to your eyes.     D. Light travels so fast that there is no time for you to read.

题型：阅读理解  难度：中档

答案

1—5:  BCCAC

据专家权威分析，试题“阅读理解。Light reflecting You cannot see any object unless ..”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。