One day, about ten years ago, while working at the cash register in the gift shop at my University Museum of Natural History, I saw_______ elderly couple come in with a little girl in a wheelchair. As I looked________ ( close ) at this girl, I found that she was fixed on her chair. I then realized she had no arms or legs, just a head, a neck and upper body, _______( dress ) in a little white skirt. As the couple wheeled her up to me, I turned my head toward the girl. When I took the money from her grandparents, I looked back ________ the girl, who was giving me the most optimistic, largest smile I had ever seen. All of a sudden, her handicap(不利条件) was gone and all I saw was this beautiful girl, ________smile just melted me _______ almost instantly gave me a completely new sense of ______  life is all about. She took me from a poor, unhappy college student and ___________( bring ) me into her world; a world of smiles, love and ________( warm ). I’m a successful business man now and whenever I think about the troubles of the world, I think about that little girl and the remarkable lesson about life that she taught _________。