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】paid for支付，这里指他用前一星期在股票市场赚的钱支付(购买礼物的钱)；paid off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付出(款项等)。