The ______ of two people is the one who was born first.
4x-2×6=4
x=____
2017年5月,在乌镇举行的“人机围棋”旷世决战中,柯洁以0:3落败,AIPHAGO(阿法狗)取得了对人类的完全胜利,AIPHAGO(阿法狗)是基于第三次科技革命中的( )
Mike didn't get wet because his teacher _______ him an umbrella.
如图为人体排泄有关的主要器官结构示意图,请据图回答: