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高考文科数学淡化了对空间角的考查,所以有关体积和点面距离是近年的常考内容。考生解答时都能入手,但往往难拿到满分。就“2013年全国(课标卷I)文科19题”而言,在知识点上考查了线线垂直、线面垂直及其性质,柱体的体积公式;在能力上考查了证明并利用直线和平面的位置关系,空间想像能力,而对体积的求解则考查了运算求解能力和转化意识。整体难度不大,属中档题(原题略)。一、分析考情,梳理问题
College entrance liberal arts math desalination of the angle of the test, so the volume and surface distance in recent years, often test content. Candidates can start to answer, but often difficult to get the perfect score. In terms of “2013 National (Text Scroll I) Liberal Arts 19 questions ”, in the knowledge of points examined vertical lines, vertical lines and their properties, the column volume formula; in the ability to examine the proof and Using the relationship between the straight line and the plane, the spatial imagination, and the solution to the volume examined the ability to solve the problem and transformation consciousness. The overall difficulty is not, is a mid-range title (original title slightly). First, analyze the test conditions, sort out the problem