Look at the koala! It is 1 lovely that I want to touch it. How much do you know about koalas, especially a baby koala? Let's look at it.

    A newborn koala is smaller than a peanut. For the first few months the baby 2 inside its mother's pouch(育儿袋), and drinks its mother's milk.

    By the age of 5 3, its eyes are open and it can look out 4 the pouch. It still stays there.

     About six months after the baby is born, it leaves its mother's pouch for the 5 time for a short time, but it hangs onto its mother's back.

    It is now about 500g. It comes in and out of the pouch. It keeps very close to its 6and returns to the pouch within a few minutes. Gradually the baby will stay out longer.

    By 12 months old, the baby wants to eat only eucalyptus(桉树) 7, no more its mother's milk. The mother koala begins teaching her baby which eucalyptus leaves are 8 to eat.

    A one-year-old koala can 9 on its own, 10 it doesn't often do that. Most young koalas stay with their mothers until they are two or three years old.

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    Mike Myers is a teacher at Chauncey Rose High School in Terre Haute, Indiana. Last year, he taught his students about the world's rain forests. They learned that rain forests are important because the plants and animals of the rain forest give us food, wood, and medicine.

    Destruction of the world's rain forests is a serious problem. Unluckily, rain forests are disappearing at a rate of 80 acres per minute! As part of a class project, Myers' students bought three acres of rain forest in Central America. They paid $25 per acre. The students hope that the land they bought will be protected and not destroyed. The students became so interested in rain forests that they decided to get a closer look at a real rain forest.

    So last June, Myers and four of his students took a boat ride down a river. They saw alligators and crocodiles. In the middle of the week, a guide took Myers and his students into the rain forest. "The monkeys were not happy that we were in their forest. They broke small branches off the trees and threw them at us," one of the students said. "It was a great learning experience for all of us," said Myers.

    Each student chose something specific about Costa Rica to study involving the plants, animals, food, and culture. During the last few days the group had time to do fun activities. They went whitewater rafting and horseback riding, and visited Costa Rica's active volcano.

    Myers hopes to make the trip every year with a different group of kids.

    Do you like drinking coke, coffee, juice or milk? Do you often drink them instead of water? However, of all the things we eat and drink, water is the most important. Not all of us understand this but it is quite true. Human body can go without food for a long time, but two or three days without water usually makes people die.

    Many people do not understand how much water the human body needs to work well. What is true is that many people do not drink enough, especially in hot weather. Most people drink only when they are thirsty but often need more water after they take exercise.

    Does anyone know what is the 65%-75% of human body? It is water. If we do not have enough water, we will feel tired and become ill. So, do you know what the best drink is? It's water.