A:消化系统
B:运动系统
C:循环系统
D:呼吸系统
— That's amazing! AlphaGo won the game. It's much ____ (smart) than humans.
— It's hard to say. After all, AlphaGo was invented by humans.
把函数y=sin(2x﹣π3)的图象向右平移π3个单位得到的函数解析式为( )
在黄土高原上行走,本来距离很近,却常要绕道远行,原因是( )