【简答题】
A--air mail B--date stamp
C--EMS D--express delivery letter
E--letter box F--please forward
G--post-office box H--registered letter
I--sub-post office J--telecommunications service
K--regular mail L--mail order
M--mailing list N--postage stamp
O--post-free P--postage paid
( )特快专递 ( )免付邮资
参考答案:
参考解析:
举一反三