一黄疸病人超声发现肝内胆管扩张、胆囊肿大、主胰管不扩张，其阻塞部位可能在
A．肝门部B．肝总管C．胆囊管以下D．壶腹部
参考答案：A
China is ________ of Australia.
[ ]
A. northeast
B. southeast
C. northwest
D. southwest
