计算：（-2）-2+2-2=______．
原式=1(-2)2+122
=14+14
=12．
故答案为：12．
装载机的配重是为了平衡货物重量产生的（）力矩。
A、侧翻
B、打滑
C、倾覆
D、支撑
Despite some good early reviews, World Trade Center, a big picture dealing with horrors of 9/11, has been criticized as its subject matter is too sensitive and traumatic.
