_____, the subject was always in my mind.

A．Walking or sleeping

B．Walking or slept

C．Having walked or slept

D．To walk and sleep

适于装置人工起搏器的疾病是（）

A.心脏传导阻滞

B.心力衰竭

C.反复发作的心室停顿

D.反复发作的颈动脉窦性昏厥

E.病态窦房结综合征