2007年高考物理江苏卷的两个非常显著的特点是,新题多,注重考查学生提取信息的能力;运算量大,对数学能力的要求较高,主要涉及近似计算(第16题),微小量的计算(第17、18题),微元思想(第18题),数列与极限(第19题)等,因此给笔者的总体感觉是难度较大.笔者想通过本文对有关“近似计 The two very significant characteristics of the 2007 Jiangsu Physics Exam in college entrance examinations are that there are many new questions and they focus on the ability of students to extract information; they have a large amount of calculations and require a higher level of mathematics ability, mainly involving approximate calculations (Item 16). The calculation of the quantity (17th and 18th questions), the microelements (18th problem), the sequence of numbers and the limit (19th problem), etc. Therefore, the author’s overall feeling is more difficult. The author wants to pass this paper on the "approximation