第5题: [单项选择]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 参考答案: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 court
第20题: [单项选择]Good heavens! There you are! We ______ anxious about you, and we ______ you back throughout the night. A. are; expect B. were; had expected C. have been; were expecting D. are; were expecting 参考答案:C 答案解析:担心是从过去某时到说话时为止一直在进行的动作,用现在完成时;expect是在过去某一段时间里(整个晚上)正在进行的动作,故用过去进行时。