Second, highlight appreciation and enlightenment.

1. Adhere to the principle of "emphasizing generality and general methods while diluting skills";

This problem is the basic knowledge and important content of high school mathematics, whether it is to use the nature of inequality to deform, or to use the function idea to set new variables and determine the definition domain. The mathematical thinking method used is also a general method emphasized in the new curriculum standard, and it does not deliberately pursue skills.

2. Show the characteristics of "think more, calculate less"

In the process of analyzing the test questions, the calculation amount of each step is not large, but each step is a good test of candidates' thinking, which well reflects the innovative concept of the new curriculum standard and inspires us to take improving students' thinking ability as an important educational goal.

3. Guide the direction of "improving students' mathematics literacy"

In the analysis of test questions, many implicit conditions are used, and the process of discovering implicit conditions just hits the weaknesses of many students, which inspires teachers to improve students' mathematical literacy in the usual teaching process.