【单选题】____journalism seems like a good profession(职业),I would prefer to be a teacher.
【单选题】_______ journalism seems like a good profession, I would prefer to be a teacher.
【简答题】绘制直线的快捷键是____。在绘制直线过程中还可以通过输入____来撤销所绘制的直线段,按____键结束画线,输入____来封闭图形并结束画线命令。