国产av不卡一区二区_欧美xxxx做受欧美_成年人看的毛片_亚洲第一天堂在线观看_亚洲午夜精品久久久中文影院av_8x8ⅹ国产精品一区二区二区_久久精品国产sm调教网站演员_亚洲av综合色区无码一二三区_成人免费激情视频_国产九九九视频

 

Bill is a good student and an intelligent boy. He likes to study arithmetic, and he can do all of the arithmetic problems in his book easily.

One day on his way to school, Bill passed a fruit store. There was a sign in the window which said, "Apple-Six for five cents." An idea came to Bill and he went into the store.

"How much are the apples?" he asked the store.

"Six for five cents."

"But I don't want six apples."

"How many apples do you want?"

"It is not a question of how many apples I want. It is a problem in arithmetic."

"What do you mean by a problem in arithmetic?" asked the man.

"Well, if six apples are wroth five cents, then five apples are worth four cents, four apples are worth three cents, three apples are worth two cents, two apples are worth one cent and one apple is worth nothing. I only want one apple, and if one apple is worth nothing then it is not necessary for me to pay you."

Bill picked out a good apple, began to eat it, and walked happily out of the store. The man looked at the young boy with such surprise that he could not say a word.