Sino-foreign educational program on business is popular in China now, and the demand for high level interpretation is great.

A．programs in enterprises/high level interpreters

B．programs in international business/senior interpreters

C．program in international biz/senior interpretations

D．programs of business/high-level interpretations

与经典的根治性颈清扫术不同，功能性改良根治性颈淋巴结清扫术，应保留颈部哪些结构（）。

A.颈内静脉

B.副神经

C.颈外静脉

D.胸锁乳突肌

E.颈丛神经