第6题: [单项选择]Your collection of pictures must be very ___________ now that prices have increased so much. A. priceless B. worthless C. valueless D. costless 参考答案:A 答案解析:[译文]既然价格涨了那么多,你收藏的作品一定很值钱。
[解析]形容词辨义。priceless意为“无价的,极贵重的”,如:a priceless treasure(无价之宝);worthless意为