胆总管下段位于胰头的
A.前方
B.外侧
C.后方
D.内侧
E.实质内
参考答案:E
The time the old man devotes ____ English at home is very important to him. [ ]
A. to studying
B. to study
C. of being studied
D. of studying
男,46岁,无痛性肉眼血尿1个月。查体无异常。尿中找到瘤细胞。IVP:右肾盂有一小的充盈缺损影。膀胱镜检查见右输尿管口喷血。最可靠的诊断是()
A.肾癌
B.肾盂癌
C.肾错构瘤
D.输尿管癌
E.肾母细胞癌