治疗肩周炎的主方为（）
A.肩髃、肩贞、肩前
B.阳陵泉、阿是
C.阴陵泉
D.昆仑
E.后溪
参考答案：A, B
---Who ______ it be that hasn’t handed it in yesterday.
---It _______ be Bob. He handed it in yesterday.
A．can; mustn’t
B．must; can
C．can; can’t
D．may; mustn’t
