患者，女性，反复出现尿频、尿急伴右腰阵发性隐痛，且放射至下腹部，近1个月来2次全程血尿，尿涂片发现革兰阴性杆菌。为明确诊断，哪项检查最有意义（）

A.尿结核菌培养

B.尿高渗培养

C.内生肌酐清除率测定

D.膀胱镜检

E.KUB—FIVP检查

A certain theater has 100 balcony seats. For every$2 increase in the price of a balcony seat above$10, 5 fewer seats will be sold. If a11 the balcony seats are sold when the price of each seat is$10, which of the following could be the price of a balcony seat if the revenue from the sale of balcony seats is$1,360 ？（）

A．$12

B．$14

C．$16

D．$17

E．$18