On no account           to the teacher．

A．is this the first time he has lied

B．this is the first time he has lied

C．is this the first time has he lied

D．this is the first time he is lying

男性，32岁。因一周来水肿少尿，BP120／80mmHg，尿镜检无RBC，血浆清蛋白28ｇ／L，24h尿蛋白定量为8ｇ。

经足量激素治疗8周，尿蛋白无减少，这时应进一步检查（）

A.肾脏B超

B.静脉肾盂造影

C.尿细菌培养

D.肾穿刺病理检查

E.肾放射性核素检查