Thanks to our school program The same song , we ___________ about ten songs by the end of last month.

A．had learned

B．have learned

C．learned

D．were learning

下列何方的药物配伍体现了攻下扶正，邪正合治( )

A．十枣汤

B．防风通圣散

C．大承气汤

D．大柴胡汤

E．黄龙汤