中国象棋是一种古老的智力游戏，是中国人智慧的体现。以下说法不符合史实的是 [ ]

A．“火”旁的“炮”最早可能始于唐朝

B．“相”退出历史舞台始于明成祖朱棣

C．“楚河、汉界”源于秦末汉初的历史

D．“围魏救赵”的象棋战术源于战国史

We have two rooms_________, but I can’t decide_________.

A．to live , to choose which one

B．lived, choose which one

C．to live in, which one to choose

D．live, which one