完形填空（共10小题；每小题1分，满分10分）
先通读下面的短文，掌握其大意，然后在每小题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
    Few people like changing their habits, good or bad. Whether it is smoking, drinking or over-eating, they   16   “enjoying” them to the end.
    On every packet of cigarettes(香烟), people are warned against the   17   of smoking: “Warning: Cigarette Smoking Is Dangerous to Your Health”.   18  , millions of them start smoking or go on  smoking. Why?
    Facts show that families and surroundings(环境) play a very important part in   19   smokers. All those smokers come from smoking families or have smoking   20   or relatives. Films and TV plays also play a part. People   21   their “heroes” on TV drinking alcohol(酒) or smoking cigarettes. “Heroes” seem to fear   22  , neither killing themselves nor killing others with alcohol and cigarettes. If they are not afraid of the harm of smoking and drinking,   23   should common people be afraid?
    The simple warning on the cigarette packet does not influence smokers’ habits. Even   24   warnings, like showing pictures of smokers who have died of cancer, don’t seem to work.  
    Knowing and believing seem to be two   25   things. If smoking is really as harmful as doctors say, it is time for smokers to think about it and try to give it up!
16. A. stop   B. continue   C. finish    D. avoid
17. A. chances   B. excuses   C. causes    D. dangers
18. A. Moreover  B. Also    C. However   D. Otherwise
19. A. influencing  B. explaining   C. improving   D. describing
20. A. parents   B. uncles   C. brothers   D. friends
21. A. hear   B. catch   C. watch    D. face
22. A. something  B. nothing   C. anything   D. everything
23. A. what   B. how    C. when    D. why
24. A. stronger   B. worse   C. longer    D. harder
25. A. similar    B. pleasant   C. different   D. boring

16. B     17. D    18. C    19. A    20. D
21. C    22. B    23. D    24. A    25. C