进一退二法倍投法

简介：However, Su Can was a man of two generations. His face remained calm and his heart did not beat. He looked very sincere and said: If I did not do well in the final exam this time, I thought about calling a deputy monitor of our class who has excellent grades, that is, I play A good friend gave me some tutoring, and the reward for the tutoring was that I bought her some sweets that girls eat at home.