It’s my           to make sure that the disabled people in our neighborhood have access to all public buildings.

A．ambition

B．behavior

C．dignity

D．assistance

下列变化需要加入还原剂才能实现的[ ]

A．MnO₄^-→Mn²⁺　　　　　　　

B．HCl→Cl₂

C．Fe→Fe³⁺　　　　　　　　

D．KClO₃→O₂