The days when he was_________ his best is already a thing of the past.

A．in

B．on

C．at

D．with

急性心肌梗死时主要引起

A．左心室容量负荷过重

B．右心室容量负荷过重

C．肺动脉楔压升高

D．心肌代谢障碍

E．左心室压力负荷过重