艾滋病病毒检测的确证试验通常采用何种检测方法（）
A.竞争法
B.免疫印迹法
C.化学发光法
D.斑点—ELISA法
E.斑点免疫渗滤试验
参考答案：B
原生质体融合
She was complaining that the doctor was________too much for the treatment he was giving her.[ ]
A．spending
B．offering
C．costing
D．charging
