What do you mean by five sets of volumes of Gonggong University?
Five sets of test papers. The five sets of upper, middle and lower test papers of Polytechnic University refer to the five sets of test papers created by teachers of Hefei University of Technology, which are divided into three parts: upper, middle and lower. * * * The problems created focus on high-number multiple-choice questions, and the calculation of high-probability questions proves that the problems are moderately difficult, sometimes easy to see and sometimes difficult to find.