A:浮游植物、鱼
B:小虾、鱼鹰
C:浮游植物、小虾
D:浮游植物、鱼鹰
81:27
0.3:0.09
5: 57
0.25:1
Not only the students but also the teacher ___ enjoying the film at 9 pm yesterday.
我国共有多少个少数民族?( )