— Jim, how did your English test go?

— I had thought I ________, but luckily I came top in the list in class.

A．should have failed

B．could have failed

C．need have failed

D．might have failed

骨骼疾病时血清ALP活性升高的原因是（）

A.细胞内此酶合成增加

B.此酶排泄障碍

C.此酶释放增加

D.遗传缺陷

E.细胞膜通透性增加