A. because the auction sales took place at night B. as a signal for the crowd to gather C. to keep the auction room warm D. to limit the time when offers of prices could be made 参考答案:D 答案解析:[试题分析] 本题是一道细节题。 [详细解答] 这道题要求考生注意第二段的最后一句话"...and bids could be made while it was burning."这句话就是答