明中叶以后，地方官府所制定的集市日渐次频繁，间隔缩短。江南有许多乡村市集，也都超越了定期市的阶段，如苏州昆山县的半山桥市，“民居辐辏，朝夕为市”。这反映了当时江南（ ）
回答下列问题：
A：Good morning．
B：____
A：I am Li Fei．____
B：My name is Wang Qiang．
A：____
B：Yes,I am.
A：I am twelve．____
B：I am twelve too．
B：OK! Let's go．
A．Good idea!
B．How are you?
C．Good morning．
D．What about you?
E．What's your name?
F．Are you from Beijing?
G．Let's go and play football．
如图，正六边形ABCDEF中，BA→+CD→+EF→= ( )
