She is ________ new comer to ________ physics but she has made some useful inventions already

A．the, the

B．the, /

C．a, /

D．a, the

时有膀胱刺激症状，伴排尿困难及尿流中断，改变体位可继续排尿。首先考虑（）

A.急性膀胱炎

B.急性肾盂肾炎

C.泌尿系结核

D.膀胱结石

E.膀胱肿瘤