The program “ Master’s Lectures” of CCTV are both interesting and instructive .No wonder they_______a large audience.

A．appoint to

B．account for

C．appeal to

D．appear on

我国《价格法》规定的价格歧视主要是指( )。

A．横向价格歧视

B．纵向价格歧视

C．横向价格歧视及纵向价格歧视

D．多边价格歧视