男的说：我花了3500美元买了个数码相机,这个价格是原价7折（30% off）
女的说：真实惠.
问题：相机原价多少钱?
x(1-30%)=3500
答案5000
英语高手进来看下 简短听力2.M:I paid $3,500 for this digital camera.It wa
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