Once an old gentleman went to see a doctor. The doctor examined him and said, “Medicine won’t help you.” You must have a complete rest. Go to a quiet country place for a month, go to bed early, drink milk, walk a lot, and smoke just one cigar a day.”

　　“Thank you very much,” said the old gentleman, “I shall do everything you say.”

　　A month later, the gentleman came to the doctor again, “How do you do!” said the doctor, “I am very glad to see you. You look much younger.”

　　“Oh, doctor,” said the gentleman, “I feel quite well now. I had a good rest. I went to bed early. I drank a lot of milk. I walked a lot. Your advice certainly helped me. But you told me to smoke one cigar a day, and that one cigar almost killed me at first. It’s no joke to start smoking at j\my age.”

　　1.D 2.B 3.A 4.B 5.D