Rudolph just stood there，saying nothing．_________ he was a man of few words．

A．Particularly

B．Approximately

C．Surprisingly

D．Apparently

CMMI模型基于过程途径思想，通过过程把软件质量的3个支撑点：受训人员、__________、__________进行集成，以开发所期望的系统/产品。