Could you tell me（）the seaport（）?
A.where/are
B.where/is
C.is/where
参考答案：B
If not _____, you can return everything on the spot and no further duties when you purchase goods at
www.amazon.cn.[ ]
A. to satisfy
B. being satisfied
C. satisfied
D.satisfying
为明确诊断，应首选哪一项检查
A．口服胆囊造影剂造影
B．静脉胆道造影术
C．B超检查
D．PTC
E．ERCP
