题目内容：
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，设计一节20分钟的英语阅读活动。
教案没有固定格式，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：20分钟
学生概况：某城镇普通中学七年级(初中一年级)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)》二级水平，学生课堂参与积极性一般。
语言素材：
Mr. Cool's Clothes Store
Come and buy your clothes at our great sale! We sell all our clothes at very." good prices. Doyou like sweasters? We have green sweasters for only $15! Yellow sweasters for only $12! Do youneed trousers? For boys, we have black trousers for only $22. And shorts are only $16! For girls,we have skirts in purple for only $20. How much are our jackets? Only $30!And we have blackshoes for only $28. Socks are only $2 for three pairs!Come to Mr. Cool's Clothes Store now!
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