What does you brother do?[ ]

A. He works very hard.

B. He is outgoing and friendly.

C. He is a sales assistant.

D. He is tall with curly hair.

德国早期养老保险基金实行的筹集模式是( )

A．现收现付式

B．完全积累式

C．部分积累式

D．预收预付式