It was ______ back home after the experiment. 

A． not until midnight did he go

B． until midnight that he didn’t go

C． not until midnight that he went

D． until midnight when he didn’t go

下列氨基糖苷类抗菌药物中，损害肾小管上皮细胞发生率最高的是（）

A.新霉素

B.卡那霉素

C.妥布霉素

D.阿米卡星

E.奈替米星