【正确答案】A native of Chu after worshiping his ancestors gave his retainers a pot of wine. The retainers discussed and decided: " It’s insufficient for all of us, but too much for one of us. We suggest, therefore, that we draw snakes on the ground, and the one who first finishes will win the pot of wine. " When one retainer completed his drawing, he took the pot to drink. As he held it in his left hand, he continued to draw the snake with his right hand, saying: "I can add feet to it. " While he was adding feet to his snake, another man who finished snatched the pot from his hand, protesting: " No snake has feet. How can you add feet to it?" Then he drank the wine. The man who added feet to the snake lost his prize at last.