比较是一种重要的思维方法,它是将两个以上的对象放在一定条件下,按照同一标准对照,从而确定各对象属性的异同、地位的主次或功能的优劣,以达到认识对象的目的.这种思维方法应用于解题就构成了比较法,即在题设条件下,按照一定的标准,通过比较而得解题途径的解题方法. Comparison is an important way of thinking, it is more than two objects under certain conditions, in accordance with the same standard control, so as to determine the similarities and differences between the attributes of the object, the status of primary and secondary functions or advantages and disadvantages in order to reach the target The purpose of this method of thinking applied to the problem-solving constitutes a comparative law, that is, under the conditions of setting, according to certain standards, through comparison and problem-solving approach to solving the problem.