比较是人们认识客观事物的思维过程和辨别真伪的方法。人们常常通过对事物的比较研究产生新的认识，形成新的概念，或作出正确判断，形成新的理论。学生在学习时，也是通过同中求异、异中求同来掌握知识，并由此获得新知识。有些学生在学习中只求“应该这样”，并不懂得“... Comparison is the process of people's thinking process of understanding objective things and the method of distinguishing authenticity. People often create new ideas through comparative study of things, form new concepts, or make correct judgments to form new theories. Students in learning, but also through the same, different in different ways to grasp the knowledge, and thus obtain new knowledge. Some students in learning only “should be” do not know "...