Do you want to feel happy and know how great you are? Here are five ways to make you feel good about yourself.

    Encourage yourself. Look in the mirror and say to yourself, “I am a special person and there's no one in the world like me. I can do anything.” It may not sound so good, but it really works!

    Help others. Do something nice for someone who always makes you feel good.

    Smile! Be friendly to people you meet. No one can refuse(拒绝) a big smile. Look for the good things in your friends and family.

     Learn something new! New things may be great challenges(挑战), but when you fall in love with them or get some progress, you'll be very happy.

    Stay with your family. We all need our family time. Talk with your mom and dad or maybe even your cousin. This can make you feel warm and give you confidence to get on well with others.

    Let's have a look at American students' school life. On school days, American students usually get up at 7:00 a.m. Most students walk or take a yellow school bus to school. Some students ride bikes. After they arrive at school at about 8:30 a.m., they meet their friends and talk about their activities. They put their backpack in a small cupboard(衣柜）and take out only one book, some writing paper and a pencil for each class. In the middle school, they take only five or six subjects each term. They usually go to the same class every day, and they have homework for every class.

    At noon, the students eat lunch at school. They often have meat, vegetables, fruit and some drinks. But some students like pizza, hot dogs or hamburgers better. At 13:00 in the afternoon, they begin to have classes. Their classes are always over at 15:00. Then they join the school clubs or play sports. They go back home at about 5:30 p.m.

Information Card

    Many people seem to know well about the rain forests. Some people even go to the rain forests to spend some of their time trying to make friends with the plants and animals there. The scientists are actually hard at work studying the plants that grow in the very top level of a rain forest. Rain forests are one of the richest environments on Earth. They are home to millions of species of plants and animals. The red research raft provides scientists with a platform from which to study life in the treetops. Scientists can even sleep on the raft, so they can stay up in the treetops for days at a time.

    Rain forests cover only about 6 percent of Earth's land surface. However, they contain more than half of the plant species on Earth. Many of these plants provide useful medicines to use against human diseases. In fact, about 25 percent of prescription medicines in the United States are based on chemicals from rain forest plants. Scientists think that many new medicines might be developed from plants that are yet to be discovered.

    Unluckily, rain forests are disappearing. Rain forest trees are being cut down for wood. Huge chunks of the forests are cleared to provide land for farm animals and crops. Scientists haven't identified all the plants in these forests yet. Some scientists think thousands of kinds of plants that we'll never even know about are being destroyed each year.

    Why do people cry? Scientists say the body produces tears because they need them. One kind of tears is for the eye, the other is for the heart. They both work as cleaners. If something else like dust(灰尘) gets into your eye, tears also come into the eye to clean it out. If you are hurt by something, your strong feelings produce some poisonous chemicals(毒素) in your body, and at the same time, tears come out with them. If these poisonous chemicals are not cleaned out of your body as soon as possible, they will do harm to the heart sooner or later.

    In the United States men have heart problems more often than women do. Doctors say heart problems have something to do with the pressures(压力) of living and working now. Perhaps men suffer more from these illnesses because they do not cry enough. They need to cry more.

    In fact, you can find many ways of reducing the pressures to keep fit. Crying is a natural and physical one.

    Fire was discovered many thousands of years ago. The first time humans saw fire was probably when a tree was destroyed by lightning(闪电).Humans soon learned how to make a fire. They probably made the first fire by rubbing (摩擦)two sticks together. Fire was very important to humans. They needed fire to keep warm at night. They used fire to cook food. ⑶They used fire to keep enemies and wild animals away. In some parts of the world fire was used to send messages. The Indians in America, for example, used fire to make smoke as a message. In some other countries people lit fires to warn their friends of danger. ⑷Fire was also used to give light. Before the invention of the oil lamp(灯), humans burned sticks to get light. One man even used fire to tell the time. He invented a candle clock. He made a candle that took exactly twelve hours to burn. Then he marked this candle in twelve equal(相等的) parts. He lit the candle and could tell the time by counting the number of parts left of the burning candle. But the candle clock did not always work well. If there was a wind blowing on the candle, it burned too quickly.