4．The couple as well as all their family members were informed of the details on Sunday morning,  _________a meeting was held.

A．in which

B．after that

C．from which

D．after which

免疫反应的特异性是指（）

A.样品测定值与标准品值的符合程度

B.样品测定值与平均值的偏差

C.检测物与其对应物之间选择性反应

D.某一试验方法的最小可测量

E.某一试验方法对同一样品的重复测定值