超过有效期的《进境动植物许可证》自行失效，不能办理延期手续。( )
参考答案：对
They did not find ________ to prepare for the worst conditions they might meet.
A．it worthy
B．it worthwhile
C．it worth
D．worth their while
善治血淋的药物是（）
A.金钱草
B.萆薢
C.海金沙
D.石韦
E.瞿麦
