—What should we do next?
—Here are some vegetables. We have to _________.
A:cut it up
B:cut up it
C:cut them up
D:cut up them
关于香港地区位置、范围、描述错误的是:( )
若圆C的半径为1,圆心在第一象限,且与直线4x-3y=0和x轴都相切,则该圆的标准方程是( )
如图表示子宫内的胎儿,请据图回答下列问题