根据提供的信息和语言素材设计教学方案。用英文作答。
设计任务：请阅读下面学生信息和语言素材，设计15分钟的英语阅读教学方案。
该方案没有固定格式。但须包含下列要点：
teaching objectives
teaching contents
key and difficult points
major steps and time allocation
activities and justifications
教学时间：l5分钟
学生概况：某城镇普通中学初中三年级(九年级)学生，班级人数40人，多数学生已经达到《义务教育英语课程标准(2011年版)》四级水平。学生课堂参与积极性一般。
语言素材：
Different Customs in Different Countries
I′m from Colombia; we′re pretty relaxed about time. If you tell a friend you′re going to their house for dinner, it′s okay if you arrive a bit late. Spending time with family and friends is very important to us. We often just drop by our friends′ homes. We don′t usually have to make plans to meet our friends. Often we just walk around the town center, seeing as many of our friends as we can!
In Switzerland, it′s very important to be on time. We′re the land of watches, after all! If someone invites you to meet them at 4:00, you have to be there at 4:00. If you′re even fifteen minutes late, your friend may get angry. Also, we never visit a friend′ s house without calling first.
We usually make plan to see friends. We usually plan to do something interesting, or go somewhere together.