logical thinking
逻辑思维
The teacher told the class the story of a man who swam a river three times before breakfast.
老师给同学们讲了一个小故事，说有一个人早饭前要在河里游泳，横渡三趟。
Johnny laughed.
约翰尼笑了。
"Do you doubt that a good swimmer could do that?" asked the teacher.
老师问：“你不相信游泳很好的人可以做到这个？”
"No, sir," answered Johnny, "but I wonder why he did not swim it four times and get back to the side where his clothes were."
约翰尼回答说：“不，我相信，但我不明白他为什么不游四次，好回到他放衣服的那边呢。”
