阅读下列短文,从每题所给的四个选项中选出最佳选项。

　　I am here to teach ，offering my way of life which has enabled me to beat the doctor an the hangman for ninety years．Some of the details may sound untrue，but they are not．

　　We have no permanent habits until we are forty，then they begin to harden．Since forty l have been regular about going to bed and getting up and that is one of the man things．I have made it a rule to go to bed when I had to．This has resulted in a regularity Of irregularity．It has saved me sound，but it would injure another person．

　　In the matter of diet-which is another main thing-I have been strict in sticking to the things which didn't agree with me until one or the other of us got the best of it．Until lately I got the best of it myself．But last spring I stopped eating mince pie after midnight．For years I have taken coffee and bread at eight in the morning，and no bite until seven thirty in the evening．That is all right for me，because I have never had a headache in my life, but headachy people would not reach ninety comfortably by that road，and they would be foolish to try it．

　　I have made it a rule never to smoke more than one cigar at a time，but no other limits．I do not know just when I began to smoke，I only know that I didn't let my father know it ．He passed from this life early in 1917，when I was a shade past eleven; ever since then I have smoked publicly．As an example to others，it has always been my rule never to smoke when asleep，and never to stop when awake．It is a good rule I mean，for me；but some of you know quite well that it wouldn't answer for everybody that's trying to get to be ninety．

　　I smoke in bed until I have to go to sleep; I wake up in the night，some-times once，sometimes twice，sometimes three times，and I never waste any Of these opportunities to smoke．This habit is so old and dear and precious to me．I will admit，however，that I have stopped smoking now and then，for a few months at a time，but it was on principle，it was only to show Off；it was to pulverize(粉碎)those people who said l was a slave to my habits and couldn't break away from them．

1．The author of this passage________．

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A．always goes to sleep at different time every day

B．only smokes one cigar every day

C．doesn't have any for eight hours during the day

D．has some good habits which help him to get to ninety

2．The underlined phrase “got the best of it”in Paragraph 3 probably means________．

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A．got the best result

B．made the best use of it

C．got a lot of good effect

D．won the fight

3．Sometimes the author stops smoking________．

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A．to have a break for a few months

B．to show how dear the habit is to him

C．to prove that he can give his habits if he wishes

D．to tell those people who don't like him that he wants to get out of his smoking habit

4．This passage was most likely written________．

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A．in the early 20th century

B．in the mid 20th century

C．in the late 20th century

D．in the early 21st century

5．Although the author says，“I am here to teach”，his purpose is really to________．

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