When I stayed in the countryside, I enjoyed ____ leisurely walk in the fields, and felt ____ warmth of

the sun on my face. [ ]

A. / ; the    

B. a ; a    

C. / ; a    

D. a ; the

CV穿刺后突然发绀，脉压低，奇脉、心音遥远

A．气胸
B．心脏压塞
C．血胸
D．空气栓塞
E．血肿