It is not excluded that there are some good and difficult questions, but the comprehensive degree of most questions is far from enough, which does not meet the current standards for postgraduate entrance examination. I have done 660, the high number part of the book, 18 tells the real question of 98- 1 1 year. Wu Zhongxiang's ten-year analysis of Huang Xiankai's five volumes 1000, and this book, 100.