下列各项中，不属于讲授法的优点的是( )。

A．易于操作

B．经济高效

C．多向式信息交流

D．有利于教师作用的发挥

—Do you think Mark Twain's stories are ______?  

—Yeah. Most of us are ______ in his stories.[ ]

A. interesting, interested    

B. interested, interesting

C. interesting, interesting  

D. interested, interesting