The old man feels very _________because all his children have gone abroad and his wife _________ for almost two years.

A．alone, has died

B．lonely, died

C．lonely, has been dead

D．alone, has been dead

应用吗啡或芬太尼复合全麻后，拔管指征是（）

A.咳嗽反射存在

B.呼吸>12次/分，潮气量正常

C.自主呼吸恢复，Sp0₂>95%

D.意识恢复

E.对疼痛刺激有反应