英语笑话:A smart horse 聪明的马

There was a farmer who fell and broke his hip while he was plowing（耕地） , and his horse immediately galloped（疾驰，飞奔） five miles to the nearest town and returned, carrying a doctor on his back."That’s a pretty smart horse," the farmer’s friend later observed."Well, he’s not really so smart," the farmer said. "The doctor he brought back was a veterinarian!"