Some people often things trains and ______taxis.
A:forget;on;on
B:leaves;on;on
C:forgets;by;on
D:leave;on;in
|﹣12|的相反数是( )
烟台是美丽的海滨城市,海洋为我们提供了大量的鲜美食品,如鲍鱼、海蜇、对虾、银鲳等,它们分别属于( )
设a,b∈R,i是虚数单位,则“ab=0”是“复数a+bi为纯虚数”的( )