A:二倍体
B:四倍体
C:六倍体
D:八倍体
Sichuan is famous _______ its hot (辣的) food.
(Ⅰ)求sin(﹣ 10π3 )的值;
(Ⅱ)化简: sin(π+α)cos(α−π)tan(3π−α)sin(π2−α)cos(5π2+α)tan(α−9π) .
下列行为中,属于先天性行为的是( )