6个数字三中三有多少组不重复

简介：Then, under the stimulation of Su Can, all the students in the class began to study enthusiastically. The students with poor grades looked up to Zhao Shun, the students with middle grades regarded Su Can as their goal, and the top students with good grades were even more unconvinced, thinking in their minds Why could Su Can do so well in the exam? His mind was no worse than others, so he worked harder and studied harder.