It's a wonderful, warm summer day without a coud in the sky. You're outside, and you can feel the sun's heat on your skin. Do you know what else you are feeling? You're feeling the sun's energy! Without it, the earth would be a cold, dark, lifeless place The sun's radiation(辐射) gives us light and heat energy.

 The Sun's radiation can be harmful to us as well. We can't see it, but ultraviolet(紫外线) radiation comes from the sun along with heat and light. You can not see ultraviolet radiation, but it influences our health. Ultraviolet radiation is what burns our skin.

 Ultraviolet radiation has three parts: ultraviolet radiation A, ultraviolet radialion B, and ultraviolet radialion C. Waves of ultraviolet radiation  A and B may cause harm to our body when we get sunburned. The harm to our body can give us skin cancer(皮肤癌) and cause other health problems.

 You can help to protect yourself from ultraviolet radiation by wearing sunscreen(防晒霜), sunglasses and hats.

 Try to stay out of the sun when it is especially strong .You can find out ultraviolet radiation levels by watching the weather report on television.

      Lu Xun is one of the greatest Chinese writers of the 20th century. Besides his famous stories, he also wrote many influential articles about the living conditions of Chinese people.

Born in 1881 to a wealthy family, Lu Xun had a happy childhood. In 1893, however, his grandfather, a senior government official, was put into prison for taking money. At the same time, his father became seriously ill. From that time on, his family were no longer accepted by their relatives and friends. These early experiences greatly influenced his writing.

By the time Lu Xun arrived in Nanjing to study at university in 1899, he already believed that Chinese society had to change and become modern. In 1902 he went to study in Japan. There, he began writing articles for several Chinese student magazines. He showed a gift for writing and translating and he even wrote several books, although none was popular. He returned to China in 1909 because he was in need of money.

    Everyone needs friends. They are very important because friends bring us happiness and hope in our lives. But the ability to make friends changes from person to person. To some people, making friends is not hard, and to others it's very difficult. Making friends is a skill, and the first thing is to know how to get on with others. If you have trouble in making friends, maybe I can tell you how to do it.

    a)Realize your own good points. You have skills and talents(才能) that others will like.

    b)Believe that you are a good person and have something nice to share with others.

    c)Be humorous. Learn to laugh at yourself and your weakness. Remember to smile at others.

    d)Respect(尊敬) the others. Everyone has his own idea. Learn how to listen to others' ideas without trying to make them accept yours.

    e)Be kind. If you are kind to others, they will usually be kind to you. There are hundreds of little things you can do to show your kindness. Open the door for someone. Wave to a friend and so on.

    f)Don't complain. Learn to accept what you can't change, and work hard to change what you can. No one is willing to hear your complaints all the time.

    g)Never give up. Even if you are faced with some closed-minded people, never give up. And try to find someone who will understand you.

    How do you spend your time at school? Do you know how students in other countries study every day? Here are the studying ways in some western schools.

American Students

    American students spend seven hours in their schools every day. And the day is divided（划分） into classes of about 40 to 50 minutes. Students study English, history, math, science, art and foreign languages. They go to listen to different lessons taught by different teachers in different classrooms. After class they learn job skills. Sometimes they study by working in an office, a hospital or other places one day a week.

German Students

    German students love practicing. Lots of schools have lessons for only half a day. They spend most time practicing. Teachers give students enough freedom. Students may try all kinds of ideas they have. They begin to plan what they will do in the future and work hard at a young age.

French Students

    French students like independence（独立） and freedom. Their school life is very relaxing and interesting. When they have tests, they may have snacks. For example, they can put a few desks together, and put some peanuts （花生）or candies on them.

    People have always wanted to know what our future will look like. Go on reading this text, and you will know what will happen in the next fifty years.

    How can we know what the future will look like? To be able to understand the future, you have to know the past, what has taken us to where we are today and what has changed along the way? The world has changed a lot in the last 150 years, but people are driven by the same basic needs as they were 150 years ago. Will this change in the next 150 years? No.

    What inventions have really made a different in the last 150 years? In the past years, the inventions that have changed most people's everyday life are telephone, radio, television, computer, the car and the internet. Then we of course have a lot of inventions that have made life easier, like new medicine, faster cars, trains, etc. In general, people have been working hard in the last 150 years to make inventions that will make the world a better place. Since there is still much to do in the area, this will be important for at least the next 150 years.

    Why do we need to guess the future? Guessing the future is important for two reasons: First, we need to start to think about what kind of future we would like for ourselves and our children. And then we need to know what decisions we need to make today that will give us the best future.