As a businessman he was a success, but as a husband he was ______failure, so their marriage ended in______ failure.     

A．/; /

B．/; a

C．a; a

D．a; /

医学行为是否有利于医学科学发展和揭示人类的生命奥秘是（）

A.医德评价的经济标准

B.医德评价的科学标准

C.医德评价的社会标准

D.医德评价的人文标准

E.医德评价的医疗标准