人工合成的单环β-内酰胺类药物：
A．哌拉西林
B．亚胺培南
C．头孢氨苄
D．氨曲南
E．舒巴哌酮
参考答案：D
某公司进口一批生羊皮，请根据所提供的单据，完成相关的判断题。
报检时须提供发货人出具的品质证书。()
— Did you remember to give Mary the money you owed her ?
—Yes.I gave it to her _______ I saw her.
A．while
B．the moment
C．suddenly
D．once
