. They got married in 2001 and three years later they ________ their child.

A．have

B．had

C．had had

D．will have

关于α–丁酸萘酚酯酶（α–NBE）染色，下述概念不正确的是（）

A.粒细胞系统均为阴性反应

B.幼单核细胞为阳性反应，不被NaF抑制

C.组织细胞呈阳性反应，不被NaF抑制

D.非T非B细胞可呈颗粒状阳性

E.幼单核细胞为阳性反应，可被NaF抑制