1．All parents know that young children are always energetic，eager to run，jump and play.Turning that natural energy into competitive sports can help keep kids active and healthy as they grow.Competitive sports such as soccer，track，basketball and swimming can also help kids learn important life lessons about teamwork and fair play.（1）.
Learning How to Compete
   Joining in sports teaches children and teenagers how to compete in the real world.As they grow older，they'll face competition in school，in the workforce and other areas of life.But these competitions don't have
to be negative or unhealthy. （2） .
Understanding the Value of Exercise
   （3）.In addition，many children who are active in sports are encouraged to eat healthier foods，such as fruits and vegetables.
Improving Self-respect
   Improved self-respect is another benefit of competitive youth sports. （4）.Even when he doesn't win，he can learn a valuable lesson：that you can't win every time.Losing with his team can also increase self-esteem，as he learns to hold his head high and feel proud for trying his best.
（5） .
   Youth sports can help stop negative behavior，such as joining a gang（幫派），because competitive sports provide a way of expressing their energy，friendship and controlled attacking behavior.Teens who have positive influences and friends feel less of a need to join in risky behaviors.

A.Reducing Risky Behavior
B.Developing Character Values
C.Here are the benefits of competitive sports for youth
D.If you try your hardest，you have a better chance to succeed
E.When a child wins a game with his team，he feels recognized
F.Taking part in competitive youth sports burns calories and helps to keep slim
G.Playing sports can help kids understand how competition works in a friendly environment

2．Is Fresh Air Really Good for You？
We all grew up hearing people tell us to "go out and get some fresh air." （1）According to recent studies，the answer is a big YES，if the air quality in your camping area is good.
   （2）If the air you're breathing is clean—which it would be if you're away from the smog of cities—then the air is filled with life-giving，energizing oxygen.If you exercise out of doors，your body will learn to breathe more deeply，allowing even more oxygen to get to your muscles（肌肉）and your brain.
   Recently，people have begun studying the connection between the natural world and healing（治愈）.（3） In these places patients can go to be near nature during their recovery.It turns out that just looking at green，growing things can reduce stress，lower blood pressure，and put people into a better mood（情緒）.Greenery is good for us.Hospital patients who see tree branches out their window are likely to recover at a faster rate than patients who see buildings or sky instead.（4） It gives us a great feeling of peace.
   （5）While the sun's rays can age and harm our skin，they also give us beneficial Vitamin D.To make sure you get enough Vitamin D—but still protect your skin—put on sunscreen right as you head outside.It takes sunscreen about fifteen minutes to start working，and that's plenty of time for your skin to absorb a day's worth of Vitamin D.

A.Fresh air cleans our lungs.
B.So what are you waiting for？
C.Being in nature refreshes us.
D.Another side benefit of getting fresh air is sunlight.
E.But is fresh air really as good for you as your mother always said？
F.Just as importantly，we tend to associate air with health care.
G.All across the country，recovery centers have begun building Healing Gardens.

3．How Not to Annoy Wild Animals at National Parks National parks are a treasure that offer the chance to view native plants and animals in their natural habitat．However，as the number of visitors and wildlife populations increases，humans and animals too often find themselves in close distance．（1）
   Remember that the animals living in national parks are wild．Wild animals can be unpredictable and in national parks and many state parks，they are not contained．（2） Never think that it is safe to approach them．
   （3） Stop by the visitor's center and take the time to read about the types of wildlife in the park and what to expect，The park service posts these signs to protect you and the wildlife．So，if you see the warning signs，take care．
   Make sure you give animals space．The general rule is to keep 25 yards away from all wildlife，and minimum of 100 yards away from wolves and bears．（4） If you're out hiking and you encounter wildlife，stick your thumb out and hold it out at eye level．If your thumb covers the entire animal，you're a safe distance away from that animal．
   Some wild animals look adorable and maybe you think handing them a snack two won't hurt．（5） Feeding wildlife is a bad idea and you risk getting a bite．Plus human food is not healthy for animals and it makes them learn that people aren't the threat．This becomes a vicious cycle（惡性循環(huán)）that results in people getting too close and getting hurt．Wildlife have all they need to eat in their environment．

A．But don't do it．
B．You can follow the "rule of thumb"．
C．In national parks，there are warning signs everywhere．
D．At certain times of the year，wildlife can be more lovely．
E．So it's important to know how to respect wildlife and stay safe．
F．In another word，they go anywhere within the park as they please．
G．You should always pack up food after a picnic stop or at the campground．