本文描寫作者應邀為老同學解決一起與學生的物理題“糾紛”。學生不同意單一的答案，覺得自己應該得到高分而不是零分，于是和老師協(xié)議邀請第三方公正的我解決問題。

Hints：

有引號

S=1/2 at^2

?

I excused myself for interrupting him and asked him to go on. In the next minute, he dashed off his answer, which read: "Take the barometer to the top of the building and lean over the edge of the roof. Drop the barometer and time its fall with a stop watch. Then, using the formula S=1/2 at^2 calculate the height of the building." At this point, I asked my colleague if he would give up. He nodded yes, and I gave the student almost full credit. When I left my colleague's office, I recalled that the student had said that he had other answers to the problem. I was curious, so I asked him what they were. "Oh, yes," said the student. "There are many ways of getting the height of a tall building with the aid of a barometer. For example, you could take the barometer out in a sunny day and measure the height of the barometer, the length of its shadow, and the length of the shadow of the building, and by the use of a simple proportion, determine the height of the building. The beauty of this method is that you don't have to drop the barometer and break it." "Fine," I said. "Any more?"
我為自己打斷他感到抱歉，讓他繼續(xù)做題。在下一分鐘，他匆忙地寫下了他的答案，他是這樣寫的：“將氣壓計帶到樓頂，將氣壓計靠在頂部的邊緣。然后把氣壓計丟到樓下，同時用秒表計算跌落到地的這段時間。最后，運用S=1/2 at的平方這個計算公式計算出樓房的高度?！?對于這個答案，我問我的同事他是否決定放棄他的唯一答案，承認這個學生的也是對的。他說他放棄，于是我給了這個學生幾乎滿分。 當我離開我同事的辦公室的時候，我回想起這個學生說他還有好幾種方法解決這個問題。我感到很好奇，于是我問他還有哪些方法?！芭?，是這樣的?！蹦莻€學生說?！斑€有很多種方法可以只用氣壓計就測量出樓房的高度。舉個例子，你可以在晴朗的天氣拿出氣壓計然后量出氣壓計以及它的影子的長度，還有樓房影子的長度。然后通過一個簡單的比例，就可以計算出樓房的高度。這個方法最棒在于你可以不用把氣壓計從高空扔到地上以至于氣壓計被摔壞。 “不錯，”我說.“還有別的方法嗎？”