A:disappointed; disappointed
B:disappointing; disappointing
C:disappointed; disappointing
D:disappointing; disappointed
不用其它试剂,仅仅利用试管和胶头滴管就可以区别下列四种物质的溶液:①CuSO4;②MgCl2;③KOH;④NaNO3,则正确的鉴别顺序是
台湾的少数民族主要是( )