文档介绍
Question： What is the main idea of this passage? A. Weather maps are very important to students of geography. B. Weather maps can have a 30-day “outlook”. C. Students of geography should be able to make weather maps exactly. D. Those who major in geography should have the ability to have a good understanding of a weather map. 关键-主题句 主题句：凡表述段落（或短文）主旨大意的句子。 三个特点： （1）总领性强，概括性强 （2）结构简单，不用难句 （3）其他句子解释、支撑或扩展主题句，起服从、论证、补充的作用 实例 Joshna Bingham studied four years at the University of? Paris and decided to leave before his graduation. He changed to the University of Berlin and graduated with honors. Harvard Law School and later, Boston College provided him with an excellent legal background. He is presently a business lawyer in Miami, Florida. 从以上这个段落，我们发现没有一个句子可以单独陈述该段落的主题，那么，作者写这个段落的目的是什么呢？通过仔细阅