根据血红蛋白下降程度，中度贫血是指（）。

A.Hb<150g／L

B.男性Hb<120g／L，女性Hb<110g／L

C.Hb<90g／L

D.Hb<60g／L

E.Hb<30g／L

I haven't read        of the articles carefully, but I find that there is a striking similarity between them. [      ]

A. each

B. either

C. any

D. neither