A man was very hungry,and he went to buy cakes at a snack bar.When he ate the first cake,he found he was still hungry,and so he ate a second one.He felt so hungry.After seven cakes,he was not hungry.Suddenly,he had an idea."Ah,if I eat the seventh one first,I only need to buy one cake,and I can save six yuan."
有个人非常的饿，于是就去零食店买了几块蛋糕。当他吃完一块的时候，还是感觉很饿，于是就吃了第二块。但无论怎么吃，还是感觉非常的饿。在吃完第七个蛋糕之后，他突然感到饱了。于是他就想，“啊，如果我一开始就吃第七块蛋糕，我就只需要买一块蛋糕就好了，那样就能省下6元钱了！”

suddenly ['sʌdənli]：突然
sudden death ：突然死亡法（足球术语，常用于淘汰赛。）
second ['sɛkənd]：第二，秒
snack [snæk]：零食