可与氨苄西林形成双酯化合物的是( )。
A．氯霉素B．青霉素钠C．阿米卡星D．强力霉素E．舒巴坦
参考答案：E
下列检查哪项改变与溶血无关（）
A.网织红细胞增多
B.血清直接胆红素增多
C.黄疸
D.结合珠蛋白减少
E.尿胆原增多
It's four o'clock in the afternoon. The boys _ at the pool.[ ]
A. is swimming
B. are swimming
C. swim
