He usually goes shopping ______ Sunday. [ ]
A. in
B. on
C. at
D. to
答案：B
下列可治疗小儿疳积的奇穴为
A．中魁B．耳尖C．四缝D．腰奇
烂喉痧的病因是（）
A.风热病邪
B.暑热病邪
C.温热时毒
D.风热时毒
E.湿热病邪
