治疗绦虫病的首选药是( )。
A．吡喹酮
B．氯喹
C．酒石酸锑钾
D．乙胺嗪
E．甲硝唑
参考答案：A
Do you know the reason ________he was late for the class?
A．why
B．that
C．which
D．who
