7. 最高级词处有答案：在听力对话中，经常有很多烟雾弹，烟雾弹就是你轻松就能听懂的部分，比如考生在考这个题目的时候，很容易就会听到30%，于是作出错误的判断。
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n选项：
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na)it gives a 30% discount to all customers.
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nb)it is run by mrs. winter's husband.
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nc)it hires mrs. winter as an adviser.
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nd)it encourages husbands to shop on their own.
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n听力原文：
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nm：mrs. winter, i need your advice, i want to buy a dress for my wife, can you tell me where i can get one at a reasonable price?
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nw：sure, go to richard's.it has the latest styles and gives a 30% discount to husbands who shop alone（款式最新，而且给独自购物的丈夫们7折。）
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nq：what do we know about richard's shop?