答案:C
Mr. Wood, students are here today.[ ]
A. a
B. the all
C. an
D. all the
若检查显示胆总管及以上胆管扩张,胆总管上段直径约2.8cm,下段探查不清。为进一步明确诊断,应选择的检查是
A.CTB.ERCPC.MRID.核素扫描E.腹腔镜检查