wE CAn lEArn From thE pAssAgE thAt thE two tAlk shows _____.
A．hAvE monopolizED thE tAlk show CirCuit
B．Exploit thE wEAknEssEs in humAn nAturE
C．AppEAr At DiFFErEnt timEs oF thE DAy
D．ArE tArgEtED At DiFFErEnt AuDiEnCEs