One day Mrs. Smith visited her family doctor. He was an old man with a beard (胡须). 'What's tile problem?' the doctor asked her. 'I am very worried about my son. Teddy. ' Mrs. Smith said. 'I can't slop hen From belling(打赌). He spends all his money betting on horse races(赛马). And even worse he'll bet on anything. ft doesn't matter what it is. ' The doctor said. 'I've saved (挽救) many people from gantline (赌博) before. Send him to me. ' The next day Mrs. Smith sent her san to see the doctor. While they were talking. the boy was looking at the doctor's beard. Suddenly he said. 'I bet you S 50 that's not a main beard. bard'. 'Oh the doctor said. 'Call I pull your beard Lind find out?' the boy said. The doctor thought this was a good way to leach hen a lesson. so he said. 'OK. If my beard is main. you will have to pay me $ 50. ' The boy pulled it and soon Found out it was real. The doctor laughed. Two days later the doctor telephoned Mrs. Smith. 'l think I've saved your son. ' He told her the story. Btu Mrs. Smith said. 'You're wrong. You've made him worse. ' 'How can that be?' 'Before he went to see you. he bet me $100 that you would ask him to pull your beard!' Teddy's problem was that he liked burling too much.