格林先生和格林太太的猫饿了。 "She just wants some milk," said Mrs Green. “别吵！”格林先生说。 “喵！” “她只想要喝点儿牛奶。”格林太太说。 But the milk jug was empty. "I will go and milk the cow," said Mrs Green. 可是牛奶罐是空的。 “我去 ...

趣味数学#1 —— Jugs problem. 倒水问题. 如何倒水？ Two friends who have an eight-quart jug of water wish to share it evenly. They also have two empty jars, one holding five quarts, the other three. How can they each ...