28. The presentation, management, and outcome of mental disorder differ between ethnic groups, so experts suggest delivering mental health services for a ______ society.

A．bureaucratic

B．diverse

C．conventional

D．Primitive

建立青少年组织，开展社区工作，进行青少年法规、政策或制度的修改及倡导工作等，属于青少年( )层面的社会工作。

A．微观

B．中观

C．宏观

D．综合