已知一个男孩和一只猪等于5个盒子的重,一只猪和两只猫等于三只盒子的重,一只猪等于4只猫的重
已知一个男孩和一只猪等于5个盒子的重,一只猪和两只猫等于三只盒子的重,一只猪等于4只猫的重
判断three cats weigh as much as a box
six cats weigh as much the boy
a pig and two cats are hevier than the boy
a cat and two pigs weigh as much as the boy
three boxes weigh as much as the boy
急