A:attending
B:to attending
C:attended
D:being attended
When you move somewhere new, the first thing is to find a place __________.
已知:抛物线y=ax2+bx﹣3经过点A(7,﹣3),与x轴正半轴交于点B(m,0)、C(6m、0)两点,与y轴交于点D.
材料一:周天子把土地和平民、奴隶分给亲属、功臣等,封他们为诸侯。
材料二:如下图所示
下面的物理量中,属于矢量的是( )