用于治疗再生障碍性贫血（）。

A.切脾术

B.糖皮质激素

C.雄激素

D.右旋糖酐铁注射

E.输血

Some American women were        the right to vote until 1920 after many years of hard struggle.

A．ignored

B．refused

C．neglected

D．denied