Consumers deprived of the information and advice they needed were quite simply ______ every cheat in the marketplace. A. at the mercy of B. in lieu of C. by courtesy of D. for the price of
【正确答案】
A
【答案解析】[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。