阅读理解。 Old John goes to see a doctor. The doctor looks over (检查) him carefully and says, 'Medicine can't help you. You must have a good rest. Go to a quiet place for a month. Go to bed early,drink some milk,walk a lot and smoke one cigar (抽一支雪茄烟) a day.' 'Thank you very much,' says Old John,'I can do everything you say.' Four weeks later,Old John comes to the doctor again. 'Well,' says the doctor. 'I am glad to see you.  You look much younger.' 'Oh,doctor,' says Old John, 'I feel quite well now. I have a good rest. I go to bed early. I drink a lot of milk and walk a lot.  Your advice (建议) helps me.  But you ask me to smoke one cigar a day, and it nearly kills me at first. It is no joke (笑话) to smoke at my age. ' 1. The doctor ____. A. asks him to take some medicine B. asks him not to take any medicine C. doesn't say any word about medicine D. gives him some medicine 2. Old John ____ after four weeks. A.doesn't B. looks younger C. is young D. is old 3. Which one is true (正确)? A. Old John smokes now. B. Old John doesn't smoke now. C. Old John smokes less than before (比以前少). D. Old John doesn't smoke a cigar a day. 4. What does Old John need? A. Some medicine. B. Some water. C. A lot of rest. D.  A cigar. 5. The best title (标题) of this story should be____. A. Old John B. Old John is ill C. The doctor's advice (建议) D. One cigar a day