摘要： Preview reading P45-46 Period 5 Step 1 Homework checking P5, Ex 3., P44, Using structures Ex.2 Step 2 Lead in P45, Ex 4 “Can you solve the problem? T: Do you know why you can’t go over it without missing any points or going over a line twice? Step 3 Listening P44

网址：http://m.1010jiajiao.com/timu_id_3939472[举报]