阅读理解。 I took my dog, Phil, to the vet's (兽医诊所) yesterday. When the doctor came into the room, he was limping (跛行). 'What's wrong?' I said. 'Oh, it's my knee. They want me to really appreciate the operation I'm about to have, so they delayed it another month, so I would suffer more,' he replied. It was then for the first time I actually showed my scar to someone. 'Look, I had an operation on my arm.' My wife has been telling me that it really didn't look bad. It healed very nicely. When I showed it to the doctor and his assistant, they said, 'That's terrible!' That's when I discovered something. 'Doctor, when I was a kid, I fell. I remember showing the scar to all my friends because I thought it was 'cool'. Having a scar at that age was like having a battle injury.' 'Then I went into the young adulthood and vanity (虚荣心) took over. I was in a band and never wanted anything to scar my beautiful face. Now, at 59, I just joined that group of older folks who are proud to compare operations, aches and pains,' I said struggling to get it out without laughing. The winner is the one who is in the worst shape, I guess. Then there are those at any age, who use their scars as an excuse. The kind of excuse holds them back, limits them and provides a crutch for why they aren't happy. 'Too short'... 'too fat'... 'my family'... 'ever since we had children' and so on. All scars never heal because we keep picking at (扯拉) them. I promised I'd never do that, yet today I didn't even hesitate to show the doctor my scar. It's okay. I see it as returning to my childhood. What scars do you have? 1. The doctor would limp for another month because _____ . A. he wanted to show it to the author B. his operation was put off C. he was proud to suffer from it D. he was too busy to receive the operation 2. The author felt bad about his scars when he was _____ . A. a baby B. a teenager C. a young adult D. a middle-aged man 3. As a child, the author _____ . A. often compared aches with others B. was proud to wear a scar C. often fought with other kids D. had an operation on his forehead 4. The underlined word 'crutch' in the passage most probably means ' _____ '. A. support B. injury C. experience D. chance 5.The passage suggests that we should _____ . A. avoid showing our scars B. fight against our scars C. be optimistic about our scars D. show off our scars to others