The comments which he made ______ marketing bothered his boss greatly.

A．being concerned

B．concerned

C．to be concerned

D．concerning

血证治疗可归纳为三原则，是：

A．治风、治气、治火

B．治虚、治瘀、治风

C．治火、治气、治血

D．治火、治虚、治气

E．治虚、治气、治瘀