A:可用氧化物形式表示为BaO•CuO•2SiO2
B:性质稳定,不易脱色
C:易溶解于强酸和强碱
D:x等于6
As for my experience last night, I was in a nightclub then and a fight between two young men broke in.
下列四组中,都属于结缔组织的是( )