2, the podium is three feet, a piece of chalk, a blackboard, the sound is harsh, I don't care at all, it's windy and rainy, and it's consistent. The gray hair is deep in years, and peaches and plums are fragrant all over the world! A serious face, two eyes, a three-foot platform, four steps, all corners of the country, six towers and three strategies, seven steps into an article, 80% of the years, 90% of the efforts, very hard just for the fragrance of peaches and plums, 100% grateful to the teacher! Happy holidays!