首创的或国外已有戒毒研究报道尚未获得主管当局批准上市的戒毒有效单体和复体属于
A．新药B．现代药C．传统药D．国产药品E．进口药品
参考答案：E
检测抗核抗体常用的检测方法是（）
A.ELISA
B.RIA
C.间接免疫荧光法
D.免疫电泳
E.免疫比浊
— Why do you suggest we buy a new air conditioner?
— Because the old one has been damaged _____. [ ]
A. beyond reach
B. beyond repair
C. beyond control
D. beyond description
