Tony was very unhappy for _______ to the party.

A．having not been invited

B．not having invited

C．having not invited

D．not having been invited

醋酸可的松

A．四氮唑比色法
B．铁-酚试剂比色法
C．异烟肼比色法
D．气相色谱法
E．碘量法下列药物可采用的含量测定方法为