男性，32岁，稍长距离步行后右小腿疼痛，肌肉抽搐而跛行，稍休息后症状消失．平时感右足发凉，怕冷，有麻木感。右足背搏动减弱，最可能的诊断是

A．血栓性静脉炎

B．深静脉血栓形成

C．血栓闭塞性脉管炎(局部缺血期)

D．血栓闭塞性脉管炎(营养障碍期)

E．动脉粥样硬化症

Can you tell us ______ on April Fool's Day?        [ ]

A. what she happened         

B. what did she happen

C. what happened to her

D. what had happen to her