在阴极区和阳极区之间的区域称为弧柱区，由于阴极区和阳极区长度较大，故弧柱的长度不可以认为就是电弧的长度。( )
参考答案：错
________ everyone else wouldn’t go to the mountain area, he went without a second thought.
A．As long as
B．While
C．Where
D．In spite of
在Fireworks MX中，系统默认的撤销步骤是（）步。
