在做题的过程中,常常有一些题看似条件不足或解题方法较为复杂时,不妨换个思路尝试一下,可能会得出一个出乎意料的解法或意料之外地得出一个较为狭义的规律.而在做一些难以理解的题时,可以做一下实验或简单的模拟一下,就会有新发现. In the process of doing the questions, there are often some problems that appear to be inadequate or problem-solving methods are more complicated, may wish to try another idea, you may come to an unexpected solution or unexpected to come to a more narrowly defined law While doing something difficult to understand, you can do some experimentation or a simple simulation and you will see new discoveries.