A lot of people play sports， but very few people become sports professionals（专业人员）． 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（酸痛） the next day？ Wouldn't it be better to forget sports and only pay attention to your lessons？

There are actually a lot of good 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 state． When you exercise， your body produces endorphins（内啡肽）． Endorphins give you more energy and make you feel happier．

Sports are important for everyone， but they are especially important for young people． They teach young people about winning and losing． Also， they teach young people how to communicate and work as a team． For example， when you play football， you must learn how to communicate with your teammates and work together． Sports teach young people to respect their coaches， teammates， and people they fight against as well．

Many reports say that sports help young people stay out of trouble． If a young person plays sports， he or she is less likely to have 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 video games． When you play sports， you go outside and exercise in the sun． You take in fresh air． All of these things are important．

You're probably not going to become a sports professional， but that doesn't matter． Sports will help you become a better and happier person． Sports will help you make friends and stay healthy． Here is another good reason to play sports： Sports are fun．

34． The purpose of the first paragraph is to 　　．

A． introduce the topic

B． make a survey

C． share knowledge of sports

D． ask for advice

35． The underlined word "They" in Para 4 refers to 　　．

A． reports

B． sports

C． problems

D． rules

36． In the writer's opinion， sports can bring people 　　．

A． happiness， health， friendship and fun

B． fashion， health， friendship and fun

C． happiness， wealth， health and courage

D． health， courage， friendship and value

37． The best title for this passage is 　　．

A． Sports are very interesting

B． Sports teach people rules

C． Sports make people go outside

D． Sports are good for everyone