2003年苏州市化学中考试题达到了高中选拔学生的要求,但学生答题并不理想,经调查发现他们在解决问题中出现的困难,并不是对概念、原理本身没有理解清楚,而是不能灵活运用这些慨念、原理去解决实际同题,从而在许多情况下,未能实现认识上的 In 2003, the middle school chemistry exam in Suzhou City met the requirements for selecting students in high schools. However, the students’ answer was not satisfactory. After investigation, they found that they had difficulties in solving problems. They did not understand the concepts and the principles themselves, but they could not use them flexibly. These ideas and principles have been used to solve practical problems, so that in many cases, understanding has not been realized.