三七含
A．人参皂苷Rb1等
B．三七皂苷R1、R2等
C．田七氨酸
D．三七多糖
E．黄酮苷
参考答案：A,B,C,D,E
John caught a cold on Saturday and ______ in bed ever since. [ ]
A．was
B．has been
C．is
D．have been
喹诺酮类药物不宜用于
A．老年人B．婴幼儿C．溃疡病患者D．妇女E．肝病患者
