Linda is _____ kind girl. Everyone in our class likes her. [ ]
A. a
B. an
C. the
D. \
答案:A
凿空
单克隆抗体性质鉴定最常采用的方法是()
A.放射免疫法
B.ELISA
C.玫瑰花环形成试验
D.溶血空斑试验
E.免疫荧光技术