A、A sportsman. B、A coach. C、A runner. D、A reporter. B选项均是不同的职业，而且三项都跟体育有关，推测本题与跟运动职业相关。本文是关于运动医学的讲座：Wartman体育学院的院长Helen Wartman介

I’m Helen Wartman, Director of the Wartman Sports Academy, a school that helps promising young athletes fulfill their dreams. We coach youngsters who want to swim faster than anyone else in the world and children who dream of running the marathon at the Olympic Games one day. I’ve coached many athletes in my life, going back to the day when the daughter of a friend announced she had entered for the long jump in an amateur athletics event. I enjoyed coaching her, and that was the start of my career.
    I also became interested in sports medicine at about that time, when my nephew fell off his bike and hurt his back. He’d been a keen athlete before his accident, but unfortunately, he never really got over his injury sufficiently to get back into serious training. That’s when I realize the importance of sports medicine, and the staff of the academy includes two doctors.
    Perhaps at this point I should answer a question often asked by young people when they enroll in the academy: How important is an athlete’s build? Well, nobody can deny the build does matter, and one cannot hope to be a world-class long distance runner, say, if one is built like a weight-lifter. But other factors also play a vital role. For a start, good general health and fitness. These are important, even in sports where you might not think they are a priority. In shooting for instance, athletes have to be fit to lower their heart rate. This enables them to fire between heart beats and so achieve maximum accuracy.
    At the academy, we encourage healthy eating habits. Without a proper diet, young athletes cannot achieve their optimum physic, nor will they have the energy for training. Then there’s the role of technology in sports. These days, athletes cannot compete successfully at the highest level without access to state-of-the-art equipment. I’ve already mentioned sports medicine, and it goes without saying that young athletes need to be able to consult specialists in case of an injury. But above all, at the academy, we stress the importance of attitude. Without the will to succeed, you may as well not bother to take up any sports seriously. In my opinion, it is this that is most important for our successful athlete.
20. What’s Helen Wartman’s job?
21. What do young people often ask when they enroll in the academy?
22. What does Helen Wartman stress in training at the academy?