数学选择题是初中数学中一种重要的题型,快速而准确地解答选择题是我们追求的目标.而具有一双慧眼和一颗慧心,进行有效地审题,从而敏锐地洞察出问题的本质,是达到这个目标的关键所在.本文介绍在解选择题时应当关注的几种审题思路.一、能否找出反例要肯定一个命题,往往需严格的证明;而要否定一个命题,只需举出一个反例即可. The mathematics choice is one of the important questions in junior high school mathematics, it is our goal to answer the multiple choice questions quickly and accurately, and has a pair of wisdom and a sense of wisdom to carry out effective examinations so as to acutely perceive the essence of the problem, Is the key to achieve this goal.This article introduces several thought-solving ideas that should be paid attention to in solving multiple-choice questions.First, whether to find a counterexample to affirm a proposition, often need to be strictly proved; to deny a proposition, just to give A counter-example can be.