题目

请阅读下面这则寓言，并按照要求用英语写一篇150词左右的文章。 On a sunny day s shepherd (牧羊人) walked with his two hungry sheep along a winding country path. He managed to have them two tied to each other just in case they should go separated. It was quite a long time before they arrived at a place where there was merely a small amount of fresh grass on each side of the path. Both of the sheep were so hungry that they hurried to the grass but in the separated direction as the picture showed. Unfortunately the rope fastening them was not long enough. No matter ho0.125+0.77+0.875=0.77+（0.125+0.875）只运用了加法交换律． ．（判断对错）