阅读《话说中国画》，回答问题。
本文用什么结构来组织全篇？
___________________________________
总——分——总
治疗石淋，宜首选：（）。
A.萆薢
B.木通
C.石韦
D.滑石
E.金钱草
——Do you know_____?
——He is a dentist.
A．where he is from
B．where is he from
C．what does his father do
D．what his father is
