单选题 The retired engineer plunked down $50,100 in cash for a midsize Mercedes as a present for his wife—a purchase______with money made in the stock the week before.
A. paid off B. paid through C. paid out D. paid for

【正确答案】 D

【答案解析】[解析] 本句空格处意为“工程师用前一星期在股票市场赚的钱支付(购买礼物的钱)”。paid for意为“支付”；paid off意为“偿还，付清”；paid through，有pay through the nose的固定用法，意为“被敲竹杠，付出过高的代价”；paid out意为“付出(款项等)”。只有D项符合句意。