I've tried very hard to improve my English.But by no means ________ with my progress.

A．the teacher is not satisfied

B．is the teacher not satisfied

C．the teacher is satisfied

D．is the teacher satisfied

患者男，70岁，因“间歇性、无痛性肉眼血尿1周”来诊。

术后可选择的治疗方法是(提示　术后病理：膀胱高级别浸润性尿路上皮癌（pT3bN1M0），切缘阴性。)（）

A.放射治疗

B.全身化学治疗

C.膀胱灌注化学治疗

D.免疫治疗+手术

E.分子靶向治疗

F.密切随访