-Would you like to ________ the performance of newlydeveloped energysaving device?

-Sorry, but I am not in the position to ________.[ ]

A．make a comment on; comment

B．have a comment with; comment on

C．build up comments on; comment on

D．come up with a comment; on

治疗血瘀时，常配行气药物的机制是（）

A.气能生血

B.气能行血

C.气能摄血

D.血能载气

E.血能养气