We have to be fit, no matter (不管) what age we are. It's very important for kids. That's w{#blank#}1{#/blank#} they have P.E. class.

    In Britain students have two hours of P.E. each week. P.E. includes sit-ups, press-ups (俯卧撑) and skipping rope.

    Students also p{#blank#}2{#/blank#}football, basketball and cross-country running. In summer kids run and do the high and long jumps.

    When I was at school my favourite was trampoline(蹦床). Jumping high into the air always made me excited. But you need to be c{#blank#}3{#/blank#}. Sometimes you don't land where you planned!

    When you get your report card there will be a grade for P.E.. Your parents will see how good you are a{#blank#}4{#/blank#} push-ups, as well as maths. But the grade for P.E. doesn't affect (影响) your chances of g{#blank#}5{#/blank#} into a good school.

    Water is very important to us. Every day we drink water, cook with water, take a shower in water, and have many other activities with water. Let's read and learn more about it!

    70percent of an adult's body is water. And about 80percent of a baby's body is water.

    Drinking too much water q{#blank#}1{#/blank#} can cause water intoxication (醉).

People should have about eight c{#blank#}2{#/blank#} of water every day.

    By the time you feel thirsty, your body has l{#blank#}3{#/blank#} over one percent of its water.

    About 80percent of the Earth's surface is covered with water.

    Only one percent of this water is fresh, 97percent is salt water and two percent is f{#blank#}4{#/blank#} in glaciers (冰川).

    And now, it's time to s{#blank#}5{#/blank#} water!

    Why do we play sports? You might say "to get exercise" and you'd be right. To have fun? That's true, too. But there's more. In fact, there are at least five more reasons. According to the report, people who play sports get 1 more than just healthy.

    People who play sports do better in school. You might think that playing sports will 2 all your study time. But a research shows that students who play sports do better in school than 3 who don't. Exercise improves learning and memory, which can help students become more active in class.

    It's 4 that people who play sports learn teamwork and goal setting skills. Sports teach valuable life skills. When you work with coaches, trainers, and teammates to win games and achieve goals, you're learning 5 to be successful. Those skills will serve you well at work and in family life.

    Sports are good for people's health. Besides being healthy and keeping a healthy weight, people who play sports are also less possible to smoke. And 6 in life, people who exercise have fewer chances to have cancer (癌症)or some other illnesses.

    Playing sports improves confidence. People who play sports feel better about themselves. Why? It builds confidence when you know you can practice, improve, and 7 your goals. Sports are also a feel-good activity 8 they help people get in shape, keep a healthy weight, and make new friends.

    Exercise cuts the pressure. Playing sports can make you have less 9 and help you feel a little happier. A person's mood (心情)improves during exercise. Friends can also help improve your mood. And being on a team creates close relationship 10 friends. It's good to know your teammates will support you - both on and off the field!

    What is the hardest sport in the world? Some people say it's boxing (拳击), because boxing is dangerous and boxers have to be strong and fast. Other people say the hardest sport is soccer.

    However, most people say the hardest sport is the triathlon (三项全能运动). A triathlon is a race that includes three sports. First, racers swim. After that they ride bicycles and finally they run. In the most common triathlon, racers swim 1.5kilometres, bike 40 kilometres, and run 10 kilometres. The winner is the person who finishes the race first.

    There is another kind of triathlon too. It is called the "Ironman Triathlon (铁人三项)". This triathlon is much longer. People who finish this triathlon are called "ironmen" or "ironwomen". This is because these people are so strong that their bodies are just like iron (铁).

    In the past, there were other races including three sports. However, they didn't use the word "triathlon". That word was first used to describe a race in California in 1974.

    Triathlon racers have to train very hard for their races. Many of them swim and run. A lot of people also do things like yoga (瑜伽). They have many different ways to prepare, but they all have the same goal. They want to be in perfect shape.

    To be an ironman or an ironwoman, you have to be strong and smart. You should know how to save energy during the race.