“地球运动”的相关考点,普遍具有难度大的特点,在高考中出现频率很高。目前试题命题时涉及到该考点的难度与以往相比明显下降,但是无论如何变化,其所考查的原理规律是不变的。很多原理规律教师在指导学生运用时,往往让学生记住会用就行,但是对于很多原理规律的形成或推导过程很多学生甚至包括部分教师未知其所以然,故笔者就某些常用规律做简单 “Earth ” related test sites, generally have the characteristics of difficulty, appeared in the college entrance examination frequency is high. The difficulty of the test questions involved in the current test questions is obviously lower than that in the past, but no matter what changes, the principles and rules of the test are unchanged. Many principles of law teachers in the guidance of students to use, often allow students to remember will be used on the line, but many principles for the formation or derivation of a lot of students and even some teachers do not know why, so the author of some common law to do simple