阅读理解。 I'm sure I'm not the only person (my age 15) who hates going to the dentist. Channel 4's late-night documentary (纪录片) Open wide last Tuesday was excellent for people like me. However, none of my school friends watched it because they didn't know it was on. Why can't television companies let us know about such important programmes in advance? This pragrammes was important because it showed how methods for helping people with toothache have developed over the centuries. If you think visiting the dentist today is an uncomfortable experience, just be grateful you didn't live 200 years ago! Then, the programmes told us, the only cure for toothache was removing the tooth. There weren't any dentists, so the person who cut your hair also pulled out your bad teeth, and there was nothing to stop you feeling the pain. The programme has also completely changed my attitude to looking after my teeth. My parents were always saying to me things like, 'Don't eat too many sweets.' And, 'Brush your teeth after meals.' But I never paid much attention. Now I've seen what damage sugar can do, especially if I don't use a toothbrush regularly. I'm going to change my habits. Many people would benefit from a repeat of this programme. Sophie Ashley, Oxford 1. Sophie has written this letter to _____. A. complain about the time a television programme was shown B. ask for more television programmes designed for school children C. advise people to watch a particular television programme D. persuade a television company to show a programme again 2. A reader can find out from this letter_____. A. how to encourage young people to take care of their teeth B. where to get information about future television programmes C. what kind of subjects young people enjoy studying at school D. which television channel shows the most interesting programmes 3. What did Open wide say about toothache? A. In the past, nobody could make it stop. B. Dentists used to help people who had it. C. Hairdressers have it more than other people. D. Ways of curing it have changed. 4. What does Sophie think about her parents now? A. They don't know as much as her about teeth. B. Their advice is worth listening to. C. They eat things that are bad for them. D. They don't clean their teeth often enough.