单选题 Your personal information is everywhere—processed and manipulated, stored and sold. But few people really know what is going on and how extensive this vacation has grown.

【正确答案】 B
【答案解析】[解析] vacation假期，休假，(房屋等的)腾出；A．vocation号召，召唤，天职，行业(常指赖以为生的正业)，才能；B．industry工业，产业，行业(指某一种行当)；C．profession职业，专业；D．occupation职业；因此B为答案。