—What’s your friend like?

—______________．He often helps others.

A．He’s kind and helpful

B．He’s a driver

C．He likes cooking

D．He’s poor

我国古代城市中“坊”和“市”的界限被逐渐打破，市分布在城中。上述现象最早出现于（）

A.宋朝

B.元朝

C.明朝

D.清朝