读句子,选答语。
A. She is my sister.
B. They are in the kitchen.
C. No, they aren't.
D. He's a student.
E. No, she isn't.
二里头遗址中有宫殿建筑群、大型墓葬和手工作坊,还有平民生活区和墓葬群,这反映了夏朝代的现象。( )
法国大革命爆发的根本原因是( )