下列哪一结构不属于颌下三角内容（）。
A.颌下腺
B.面动脉
C.面前静脉
D.舌神经
E.舌下腺
参考答案：E
I don’t know the reason ______ you were absent from the meeting, but I am sure that someone will tell me the reason ______ you haven’t told me.
A．why; that
B．that; why
C．because; which
D．of which; that
企业货物入境报检时应填写( )，并提供外贸合同、发票、提运单、装箱单等有关单证。
A．入境货物报检单B．入境货物通关单C．入境货物调离通知单D．入境货物检验检疫证明
