把33枝花,平均扎成6束,每束几枝花,还剩几枝?
33÷6=5(枝)……2(枝)
能和正八边形一起铺满地面的是( )
She was____busy____go fishing with me.
Al2O3+N2+3C ⇄高温 2AlN+3CO下列叙述正确的是( )