设计任务：
请阅读下面学生信息和语言素材，设计20分钟的英语听力教学方案。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：某城镇普通中学八年级（初中二年级）学生，班级人数40人。多数学生已达到《义务教育英语课程标准（2011年版）》三级水平。学生课堂参与积极性一般。
语言素材：
Reporter: Hi,I'm doing a survey for the Green City Daily News. What's the best clothing store in town?
Boy:I think Jason's is the best.
Reporter: Why?
Boy: Jeans Corner and Trendy Teens are good stores, but Jason's has good quality clothes. It's also cheaper than the other stores.
Reporter: What do you like about the other stores?
Boy: Well, let me see. Trendy Teens is in a fun part of town, but it's expensive. Don't go to Funky Fashions. It has the worst clothes in town.
Reporter: OK. What about the radio stations in Green City? What's the best radio station?
Boy: I guess Jazz 107.9 FM is the best.
Reporter: Why?
Boy: Because it has the most interesting music. It's much better than the other stations in town.
Reporter: What about the other radio stations?
Boy: Well, I think Oldies 102.1 FM is pretty bad. It has the worst music.
Reporter:I heard that Easy Listening 97.9 FM is the most popular.
Boy: Not for me.
Reporter: Why not?
Boy: Just listen to their commercials. They' re worse than commercials of All Talk 970 AM!