Among the 15-year-old children, some ____ studying in university while others are still learning to read and

write. [ ]

A. should have been

B. would have been

C. can be

D. must be

患者男性，60岁。因“间歇性无痛性全程肉眼血尿10天”就诊。无尿频、尿急、尿痛及排尿费力症状。

该患者输尿管癌病理分期是（）【提示】该患者接受了左输尿管癌根治术，术后病理报告提示为移行细胞癌，灶性浸润出输尿管肌层。送检腹膜后淋巴结共8颗，其中1颗见癌转移。

A.TisN0M0

B.T1N0M0

C.T2N0M0

D.T2N1M0

E.T3N0M0

F.T3N1M0