【单选题】Auctions are public sales of goods, conducted by an officially approved auctioneer. He asks the crowd assembled in the auction-mom to make offers, or 'bids', for the various items on sale. He encourag...
A.
because they took place at night
B.
as a signal for the crowd to gather
C.
to keep the auctioneer warm
D.
to limit the time when offers could be made
【单选题】Auctions are public sales of goods, conducted by an officially approved auctioneer. He asked the crowd assembled in the auction - room to make offers, or bids, for the various items on sale. He encour...
A.
a person who sells something.
B.
a person who buys something.
C.
a person who offers a price.
D.
a person who borrows something
【单选题】一般讲,良性肿瘤异型性小,而恶性肿瘤异型性明显,异型性主要表现在()。