我们在解题时必须做的第一件事是理解题目,知敌方能应敌.我们必须清楚地看到我们所要达到的目的,认清目标再动手.如果我们心中对目标不明确,就很容易偏离题目以致半途而废.智者从目标着手,愚者在起点止步. The first thing we must do when we solve a problem is to understand the problem and let the enemy know the enemy. We must clearly see what we are going to achieve and recognize the goal. If the target is not clear in our hearts Easy to deviate from the title and halfway through. The wise man starts from the goal, the fool stops at the beginning.