_____ that Marie was able to set up new branches elsewhere. [ ]

A. So successful her business was    

B. So successful was her business

C. So her business was successful     

D. So was her successful business

氢氧化铝的含量测定

A．使用EDTA滴定液直接滴定，铬黑T作指示剂

B．使用EDTA滴定液直接滴定，二甲酚橙作指示剂

C．先加入一定量、过量的EDTA滴定液，再用锌滴定液回滴，二甲酚橙作指示剂

D．先加入一定量、过量的EDTA滴定液，再用锌滴定液回滴，铬黑T作指示剂

E．用锌滴定液直接滴定，用铬黑T作指示剂