第17题: [单项选择]In the fifth paragraph the underlined phrase "on sale" probably means ______. A. to display for selling B. to sell at a higher price C. to sell at a lower price D. to give as a present 参考答案:C 答案解析:[精解] 文章词汇的理解题。"on sale"的意义为减价销售,甩卖,这与选项[C]一致,为正确答案。