— It’s already Monday. Sam lost his MP4 last Wednesday and he hasn’t found it.

— Really? Do you mean_?

A．did Sam lose his MP4 five days ago

B．Sam lost his MP4 for five days

C．it’s five days since Sam lost his MP4

D．has Sam lost his MP4 for five days

2009年2月，美国总统奥巴马针对日益严重的国内经济危机，签署了经济刺激计划。在70多年前，美国曾施行了类似的政策，史称[ ]

A．马歇尔计划

B．布什计划

C．里根计划

D．罗斯福新政