靖难之役是一场[ ]

A、叛乱战争    

B、统治阶级内部争权夺利的战争    

C、农民阶级反对统治阶级暴政的战争

D、外来民族的 * * 战争

—_____ is your new teacher?

—The one standing under the tree with a dictionary in his hand.        [ ]

A. Who  

B. What    

C. Where  

D. Which