第33题: [单项选择]The end of the bidding is called "knocking down" because ______. A. the auctioneer knocks the buyer down B. the auctioneer knocks the rostrum down C. the goods are knocked down onto the table D. the auctioneer bangs the table with a mammer 参考答案:D 答案解析:[精解] 文章第一段指出“For the bidding ends when the auctioneer bangs a small hammer on a table at which he st