John went to the hospital alone. If he    me about it, I would have gone with him. 

A．tells

B．told

C．should tell

D．had told

男性，21岁。25分钟前左胸部被刀刺伤。就诊时烦躁不安，面色苍白，随后出现意识淡漠。查体：脉搏细弱，血压测不到。左胸第4肋间胸骨旁2cm处可见一长2cm伤口，心音遥远、微弱。最可能的诊断是（）

A.心脏贯通伤

B.左侧气胸

C.左侧血胸

D.左侧血气胸

E.胸腹联合伤