甲型血友病患者缺乏的凝血因子是（）。
A.纤维蛋白原
B.凝血酶原
C.组织因子
D.稳定因子
E.Ⅷ因子
参考答案：E
Both the parents and James London. They will come back soon.
A．has been to
B．have been to
C．has gone to
D．have gone to
