《珍贵的动物》是一篇常识性的说明文。这篇课文的特点是条理清楚,层次分明。这不仅表现在全篇文章的结构上,也表现在每段的结构上。特别是重点的段落,层次分明,段式又很典型,正是用来教学生读懂读好一段话的好教材。如“凶猛的犀牛”的第二节,有两层意思。第一层写犀牛的外形特点,第二层写犀牛战斗力最强。第一层又分为三小层,分别写了三个外形特点,是并列关系;第二 “Precious animals” is a common sense description. This text is characterized by well-organized and well-structured. This is not only reflected in the structure of the entire article, but also in the structure of each paragraph. In particular, the focus of the paragraph, structured, paragraph-style is very typical, it is used to teach students to read a good passage to read a good textbook. As the “fierce rhinoceros” section II, there are two meanings. The first layer to write the shape of rhinoceros, the second layer to write the strongest fighting rhino. The first layer is divided into three layers, respectively, wrote the three shape characteristics, is tied to the relationship; second