在新生儿期，应进行哪些预防接种()
A．卡介苗
B．卡介苗，乙肝疫苗
C．卡介苗，百白破疫苗
D．乙肝疫苗，百白破疫苗
E．乙肝疫苗
参考答案：B
I must return the dictionary to Allen now. I _____ it for three weeks already. [ ]
A. kept
B. will keep
C. have kept
治疗溃疡性结肠炎首选药物是
A．甲硝唑
B．阿莫西林
C．强的松
D．柳氮磺胺吡啶
E．环磷酰胺
