今年高考引起中学数学教学最大震动的当属第２１题，此题与往届试题风格迥异，打破了传统解法，它不需要太多的数学知识，甚至初中学生只要懂得棱锥和棱柱概念也能做。本题阅卷小组的抽样结果（１０００个样本）与一线教师的看法一致，平均分是２．８。正常情况下，绝大多数考? This year’s college entrance examination has caused the biggest shock in mathematics teaching in middle school. It is the 21st question. This question has a different style from the previous test questions, breaking the traditional solution. It does not require much mathematics knowledge, and even junior high school students can do as long as they understand the concept of pyramids and prisms. The sampling results (1000 samples) of this questionnaire group are consistent with the views of first-line teachers, with an average score of 2.8. Under normal circumstances, the vast majority of tests?