Commentary: A complete interpretation of Xue Jinxing middle school textbooks. The explanation is fully detailed, the summary is in place, the topic is typical, and there are few mistakes. Wang Houxiong's "Complete Interpretation of Textbooks" explains in a simple way, and there are some knowledge points that other teaching AIDS do not have but will be involved in the exam. Few questions but precise, saving time.

Exercise category: Rong can choose electric midpoint or electric dial. (Personally, I think CLP is better. ) The difficulty is moderate and the questions are comprehensive. Review and improve. Ren Zhihong's "Optimal Design" has a large number of questions and is slightly more difficult.

Problem: top students' question bank Liaoning Education Press. Longmen Bookstore divergent thinking classroom. Ability Development Exercise by Liaohai Publishing House

There are too many teaching AIDS marked Huanggang Qidong in the market, and it is difficult to distinguish between true and false.