make her famous cinnamon crisps. She moves 18 and with precision (准确) to avoid another 19 .

　　But she hasn't 20 moving. In fact, she and my father attended their first Jimmy Buffet concert this summer, where they sat on the lawn. Here's the thing about my parents: They 21 say no to an invitation or a new 22 . If they can make it work, they're willing to 23 just about anything. When we need them to come stay with the kids, we have to get on their 24 far in advance.

　　They 25 us daily.

　　When asked how she was feeling, my mother responded without an ounce (盎司) of 26 : "Well, almost everything hurts every day. Some days are better than others. But you know what I've discovered? It doesn't 27 a bit to smile. So that's what I've decided to do... 28 at everyone I see. I may not be able to do all the things I used to do, but I can at least 29 someone's day."

　　It is such simple wisdom, and such a profound shift.

　　Moving the 30 from what we don't have, from what we've lost, from how we've been burdened to what we can 31 others is the difference between living in the dark and giving off 32 . And illumination (光亮), of course, makes traveling so much easier for us and for others.

　　In chaos theory (混沌理论), the butterfly effect maintains that the 33 breeze from a butterfly's wing can 34 the path of a hurricane halfway across the world.

　　Imagine, then, the possibilities that exist 35 a single smile.

16. A. after all B. on average C. for sure D. at first

17. A. wisely B. perfectly C. thoroughly D. patiently

18. A. curiously B. slowly C. cruelly D. freely

19. A. rest B. fall C. hurry D. cure

20. A. stopped B. tolerated C. regretted D. risked

21. A. sincerely B. constantly C. scarcely D. reluctantly

22. A. destination B. investment C. trust D. adventure

23. A. recover B. repeat C. try D. refuse

24. A. programs B. routines C. schedules D. procedures