为方便旅客的旅行生活，旅客可限量携带不超过20毫升的指甲油、去光剂、染发剂。（部竞赛题）
参考答案：对
简述熏烟的成分及其作用 。
—Could you tell me _______ to the post office, please?
—Yes. It's down Bridge Street on your right. [ ]
A．how I got
B．how I can get
C．how can I get
D．how did I get
