5,6,6,9,( ),81
A.12
B.15
C.18
D.21
参考答案:C
My bike is _______, but I can go there with you. [ ]
A. break
B. broke
C. broken
D. breaking
下列腧穴中,常用于治疗呃逆症的是()
A.睛明
B.攒竹
C.下关
D.挪香
E.印堂