编者按］指导高三学生解题不容易，而设计一道质量较好的题也不容易。有些初任高三历史课的教师苦于自己不会设计题目，只好在“题海”中选些题目供学生训练。由于掌握不好选题标准，往往所选的题会使学生挑出很多毛病，甚至问得老师无言以对。为此，我们邀请长期从事高三... Editor’s comment] It is not easy to instruct third grade students to solve problems, and it is not easy to design a good quality question. Some of the teachers in the first year of senior high school history are suffering from not designing their own topics. They have to choose topics in the “Title Sea” for students to train. Due to the difficulty in mastering the topic selection criteria, the questions often chosen will make the students pick out many problems and even ask the teacher to be speechless. To this end, we invite long-term engagement in the third year...