实现数据库操作的DAO技术，其模型采用的是层次结构，其中处于最顶层的对象是_____

—I hear Millie is _________ in playing badminton than going roller skating.

—I don’t think so.She’s just come first in the school badminton competition.

A．more interesting                                              

B．less interesting

C．more interested                                           

D．less interested