血友病诊断的实验室指标为()
A.STGT及纠正试验结果
B.黏膜、关节出血
C.基因诊断
D.有家族史
E.Ⅷ因子活性促凝活性测定
参考答案:A, C, E
As the old man ____ dying in bed, he finally let out the secret about his daughter.
A.lied
B.lay
C.laid
D.lain
一般而言,紫外光对微生物的变异有一定的影响。( )