Only by shouting at the top of his voice _________________.

A．he was able to make himself hear

B．he was able to make himself heard

C．was he able to make himself hear

D．was he able to make himself heard

一返流性肾病患者，反复尿频、尿急、尿痛多年，再发2周。尿常规白细胞2+，蛋白1+。但尿细菌定量培养为阴性，下列分析不正确的是（）。

A.可能为非细菌性尿感

B.收集标本时混入消毒液

C.饮水过多，标本被稀释

D.可以排除尿感

E.正在进行长程低剂量抑菌治疗