A:He lost the game
B:Lost the game
C:Losing the game
D:Because of losing the game
(2016•山东)已知函数f(x)的定义域为R.当x<0时,f(x)=x3﹣1;当﹣1≤x≤1时,f(﹣x)=﹣f(x);当x> 12 时,f(x+ 12 )=f(x﹣ 12 ).则f(6)=( )
ABCD是正方形,以BD为棱把它折成直二面角A﹣BD﹣C,E为CD的中点,∠AED的大小为( )