Mrs. Smith warned her husband _____after drinking again and again.

A．never to drive

B．to never drive

C．never driving

D．never drive

腰部突然剧痛，向少腹部放射，伴见尿血，多由______导致。

A．寒湿侵袭
B．瘀血停留
C．湿热浸淫
D．结石阻滞