______ until the lights have turned to green.

A．Wait

B．To wait

C．Waiting

D．Having waited

泌尿系肿瘤血尿特点是（）

A.全程肉眼血尿

B.终末血尿伴尿频

C.初始血尿

D.镜下血尿

E.血红蛋白尿