I was traveling alone through the UK . To reach places that were off the public transportation map , I bought an old car , which cost most of my money . I couldn't afford to stay in the hotel , so I had to camp in my car for the rest of the trip . One morning I awoke in my old car on a country road in Ireland and saw a single house . The water in my thermos (保温瓶) had gone cold , so I knocked on the door of the house . A woman opened it . I asked her for some hot water . But she wouldn't let me get away with just that!I was invited indoors . She asked me to sit at the table and have breakfast with her family . They filled my thermos before I left . I was greatly moved . And I decided to pass the kindness on . The other day I met a young man who had been driving around to look for a parking lot . He looked increasingly upset . I was glad that I was able to point one out to him . His thankful smile was the hugest reward (奖赏) for me . 51 . The writer bought the car in order to . A . serve the public B . travel more easily C . take the trip alone D . save more money 52 . Why did the writer camp in his car ? A . He was short of money . B . It was his habit . C . He could have a better rest . D . It would be warmer . 53 . The writer asked the woman for . A . a map B . a thermos C . some hot water D . a light breakfast 54 . How did the young man feel at last ? A . Funny . B . Upset . C . Disappointed . D . ThankfuL 55 . What's the main idea of the text ? A . Traveling alone is interesting . B . Sharing food is a pleasure . C . Kindness is the sunshine in life . D . Smile is important to everybody .