Tall man. "660 Questions of Mathematics Basis for Postgraduate Entrance Examination (Special Exercise for Objective Questions)" is a book published by China University of Political Science and Law Press on 20 16. The topic of 660 is more difficult than other topics. 660 mistakes, 100 mistakes, reaching a very high level. This is a professional preparation book suitable for the basic stage review of postgraduate entrance examination. The authors are Ding Yong and Wu Lili.