纵观历年高考选择题,几乎每一道题都有多种解法,但往往有繁易之分,若在解题时具有一定的优先意识,则能大大地减少盲目性, 节省时间,争得主动权．一、优先挖掘隐含条件隐含条件常常巧妙地隐藏在题目的背后, 极易被解题者忽视,从而造成错解或繁解．优先考虑隐含条件往往能减少运算量,简化或避免复杂的变形与讨论,使问题简捷获解． Looking at the college entrance examination multiple-choice questions over the years, almost every question has a variety of solutions, but often there are many differences. If you have a certain degree of priority awareness when solving a problem, you can greatly reduce blindness, save time, and gain initiative. right. First, priority mining implicit conditions Implicit conditions are often cleverly hidden behind the title, easily overlooked by the solver, resulting in misunderstanding or confusing. Giving priority to implied conditions can often reduce the amount of computation, simplify or avoid complex deformations and discussions, and make the problem easier to solve.