参考答案

正确答案：C
解析：[听力原文]
How do many senior citizens feel?
根据选项可知问题可能询问老龄市民的感觉。文中关键句为“They feel unproductive when they no longer work...they may feel lonely being away from their families and the contacts they had in their work.”由于不再工作使老龄市民感到没有收益……他们不与家人同住，也脱离了原来工作，这使他们感到孤独。故正确答案为C)。