患有癫痫的小儿不应接种百日咳菌苗。()
参考答案：对
I am sorry I can’t meet you at the station. I _____ by the time you come back from abroad.
A．am leaving
B．had left
C．will have left
D．have left
国家对进口玩具实行加施( )的管理。
A．检验检疫标志
B．检验检疫标识
C．检验检疫标签
D．A/B
