总抗核抗体筛选试验常采用（）
A.ELISA法
B.放免法
C.免疫印迹法
D.间接免疫荧光法
E.免疫双扩散法
参考答案：D
It may have been unusually cold recently but experts say it's ________ for this time of year.
A．normal
B．formal
C．ordinary
D．common
2个月是味觉发育的关键期，此期宜引入各类食物。()
