A:牵牛要牵牛鼻子
B:红花好看也要绿叶扶
C:好钢要使在刀刃上
D:工作要做到点子上
— Thanks. But I watched it _______. It was really moving(令人感动的).
计算(﹣5sin20°)0﹣(-13)﹣2+|﹣24|+273.