东南亚流经国家最多的河流是 ( )
A:湄公河
B:湄南河
C:伊洛瓦底江
D:红河
Not only Jam but also his parents _______ a few interesting places since they came to China.
如图所示分别为物体甲的x﹣t图象和物体乙的v﹣t图象,两物体的运动情况是( )
有一个数,比6多2,它是4的几倍?
复平面上复数z1与z2的对应点关于直线y=x对称,且z1·z2=4i,则z1为( )