—Jenny is always _______ for appointments. Why is she late today?

—She might have got trapped in a traffic jam in the rush hour.

A．patient

B．grateful

C．punctual

D．available

对T_a、T₁期膀胱肿瘤，膀胱内灌注治疗目前效果最好的是

A．BCG

B．丝裂霉素

C．阿霉素

D．羟喜树碱