单选题
A: Excuse me, madam, ______ know where the nearest post office is? B: I'm sorry, I've got no idea. I'm a stranger here, too.
【正确答案】
C
【答案解析】[解析] “Do you happen to know, ...?”是一个常用来向陌生人打听事、问路等时的用语。意为：“您(碰巧)知道……?”，“您可知道……吗?”语气较“can (could) you tell me…?”更婉转。该句型不可说成“Would you happen to know…?”形式。题中若选A、D两项，则上下文在意思上讲不通。