_______, he could not persuade her to accept his idea that wealth is more important than health. [ ]

A. Might as he try                

B. Try as he might

C. As he might try              

D. He might as try  

社会保险具有的特征是（）。

A、自愿性

B、社会性

C、强制性

D、互济性

E、营利性

F、福利性