When Tracy was told her son's illness could be cured, she left the hospital          . [ ]

A. in peace

B. in surprise

C. in relief

D. in time

对吗啡急性中毒所致的呼吸抑制有显著疗效的药物是

A．多巴胺

B．肾上腺素

C．可拉明

D．纳洛酮

E．山梗菜碱