封发
参考答案:是指对准备发出的文件进行分装和发送。
Lily and Lucy are twins from ______. They like ______ films very much. [ ]
A. Americans; America
B. America; Americans
C. American; Americas
D. America; American
最易经淋巴道转移的口腔癌是()。
A.唇癌
B.颊癌
C.牙龈癌
D.舌癌
E.口腔前部癌