《琥珀》(第十二册)这篇课文通过介绍科学家是怎样假想一块裹有苍蝇和蜘蛛的琥珀的形成过程,从而使学生懂得记叙一件事情,或说明一个事物,要抓住事情或事物的几个要点进行客观的分析,把与要点有关的情况考虑周到,有条理地叙述出来。琥珀是什么东西,它是怎样形成的?这对一般人来说是陌生的。因此,作者抓住这几个读者最关心的问题,即琥珀形成的要点 Amber (Volume 12) This essay introduces students how to hypothesize the formation of amber, a body of flies and spiders, so that students know how to write down one thing or one thing, to grasp things or things Objective analysis of some of the key points, taking into account the essentials of the situation thoughtful and orderly narrative. What is the formation of amber, which is unfamiliar to most people? Therefore, the author seizes the most concerned issues of these readers, that is, the formation of amber