A lot of people play sports, but very few people become sports professionals(专家). If sports aren't going to be your future, then why should you play them? Why should you train every day? Why should you work hard and feel sore the next day? Wouldn't it be better to forget sports and only pay attention to your lessons? In fact, there are a lot of reasons to play sports.
First of all, sports are a great way to exercise. Exercising keeps you healthy and strong. It also helps you stay in a good condition. When you exercise, your body makes endorphins(安多芬) which give you more energy and make you feel happier.
Also, sports teach young people how to communicate and work as a team. They teach young people to respect(尊重) their coaches(教练), teammates and players from the other team. Many reports say that sports help young people stay out of trouble. If a young person plays sports, he or she may have fewer problems. This is because sports teach people about rules. They also teach people that if they work hard, they might succeed.
Another good way of sports is that they make people leave their houses. These days, a lot of people spend too much time watching television and playing computer games. When you play sports, you go outside and exercise in the sun. You take in fresh air. All of these things are important.
Maybe you're not going to become a sports professional, but that doesn't matter, sports will help you become a better and happier person.
① how to communicate with others; ② t o be the best one;
③ how to work as a team; ④ to respect others;
(①=Paragraph 1 ②=Paragraph 2)
B . 
C . 
D . 
