(oF thE) two lECturEs, (thE First) wAs By FAr (thE BEst) onE, (pArtly BECAusE) thE pErson who DElivErED it hAD suCh A plEAsAnt voiCE.
A．oF thE
B．thE First
C．thE BEst
D．pArtly BECAusE