Shaanxi Zhonggong Postgraduate Entrance Examination shows that the average score of No.2 in 20 18 Postgraduate Entrance Examination is 6 1.22, which is low, mainly because the mathematics of No.2 is difficult. Of all the subjects, Math II is more difficult, especially Math II of 20 18. Therefore, when preparing for Math II, candidates need to make full preparations and improve their math level in order to achieve good results in the exam.