After the war, the American soldiers returned home,     .

A．safely and tiring

B．safety and tiring

C．safe and tiring

D．safe but tired

该患者术后需要膀胱内灌注治疗，目前认为效果最好的药物是下列哪一种

A．BCG

B．丝裂霉素

C．阿霉素(多柔比星)

D．塞替哌

E．羟基喜树碱