治疗皮肤疣常选（）
A.隔附子灸
B.非化脓灸
C.化脓灸
D.隔蒜灸
E.灯火灸
参考答案：B
钙的最好来源是（）
A.小虾皮
B.各种瓜子
C.奶及奶制品
D.白菜
E.面粉
He commanded that all the gates _____ during the holidays. [ ]
A. should shut
B. would be shut
C. shut
D. be shut
