下列特殊检查中，哪项无助于梗阻性黄疸的诊断()
A．超声检查
B．腹部立位平片
C．ERCP
D．MRCP
E．核素扫描
参考答案：B
--- What is that wonderful smell?
--- Our neighbor ________ for a party.
A．have prepared
B．are preparing
C．prepare
D．will prepare
