One day,Eddy,the frog(青蛙)，meets his two friends：Tom，the squirrel(松鼠)，and Mary,the bird．

    "Eddy,can you climb trees?"asks Tom．

    "No，I can't，"says Eddy．Tom laughs(笑)and climbs up into a tree．

    "Eddy,can you sing?"asks Mary．

    "No，I can't，''says Eddy．Mary laughs and sings a beautiful song．

    "Look．"Eddy says．"I can swim．"He jumps into the water and swims．

    "That's nothing．"say Tom and Mary．

    Eddy is sad and he goes away．He meets a monkey and he learns to juggle(玩杂耍)from him．Then Eddy goes back to his friends and juggles for them．But they don't like it．Eddy is sad again．At that time they hear a baby bird crying in the water,"Help!Help!"

    ary and Tom can't swim，So they can't help the baby bird．Eddy jumps into the water and helps the baby bird out．

    "Thank you，Eddy!"says the baby bird．

    "You are great，Eddy,"say Mary and Tom．Eddy is very happy now．

根据材料内容完成下列任务。

{#blank#}1{#/blank#}Keep your food safe. At night put it in bags. Hang the bags from the trees. Eat food before it goes bad(变质). Keep food and water in closed boxes or bottles.

{#blank#}2{#/blank#}Find a place for your camp an hour before it gets dark. Look for a dry place. Don't make your camp under trees or very near a river. Look for firewood before it gets dark.

{#blank#}3{#/blank#}In very hot countries, don't walk in the middle of the day. Walk in the early morning before the sun conies up.

{#blank#}4{#/blank#}There are dangerous animals in some countries. Before you put on your shoes in the morning, hit them on the ground. There may be animals inside them. Do the same with your sleeping bag before you go to sleep.

{#blank#}5{#/blank#}If you are walking, you need to drink lots of water. In very hot countries you may need 5~8 litres(升)of water a day. If you are thirsty, stop and drink.

    Your body is special—no two people in the world are the same. Although you are different from everyone else, you have exactly the same body parts as the people around you, doing different jobs that keep all of us alive.

    What is inside my head？

    Your head holds the most valuable part of your body in it—your brain. As you are reading, your eyes send pictures to your brain which makes meaning from what you see. Your brain helps you to remember and think, and makes sure your body is doing what it should do.

    What is my skin for？

    Your skin covers your body. In most parts of your body, the skin is just as thick as 0.5cm.If you cut your skin, it will have a quick cure(治愈)and stop viruses(病毒)from getting into your body. Your skin also helps you feel the heat and coldness of the environment around you. Hair grows from inside the skin. When you feel hot, extra heat comes out through your skin. As a result, your body temperature drops.

    How do I move？

    Muscles(肌肉) are found in most parts of your body. They work with your bones to help you move— whenever you cry or smile, eat or speak, walk or dance, etc.

    What does my heart do？

    Your heart is a very special muscle. It is a little bigger than your fist(拳头)and grows bigger as you do. If you place your hand on your heart, you will feel your heart beating which pushes blood to move around your body.

    Some people from the country think that city life is the most interesting. They come to visit friends or go to a hotel in the city. They may stay for a few days or as long as a week.

    Some visitors think that foreign restaurants are the best part of city life. Others have the nicest time in museums. But many people think that movies or concerts are the most important attractions of the city. And most visitors like to go shopping for clothes or presents.

    In the city there are also many parks, different types of people, tall buildings, and other interesting things to see. Cities have the busiest streets and city life seems very busy, too.

    After a few days in the city, the visitors begin to think about the country. They remember the trees and flowers. Suddenly they do not want to be near the tallest buildings or the busiest streets. Now they want to return home in the country.