单克隆抗体性质鉴定最常用（）
A.沉淀试验
B.凝集试验
C.玫瑰花环形成试验
D.RIA法
E.ELISA法
参考答案：E
It is accepted that children need friends of their own age .
A．to play
B．to play with
C．to be played
D．to be played with
发展援助
