语法与词汇 20.Consumers deprived of the information and advice they needed were quite simply ______every cheat in the marketplace.
【正确答案】 A
【答案解析】本题空格处是说消费者对在集市上被骗毫无办法。A项“at the mercy of任……摆布,在……前毫无办法”符合题意。其他三项中,in lieu of的意思是“替代”;by courtesy of的意思是“在……的允许下”;for the price of不是固定用法,都不正确。