Clothes are traditionally made of natural materials, such as cotton, leather and wool. They are all from plants or animals, but that doesn't mean they're friendly to the earth. For example, farmers have to use a lot of chemicals to grow cotton plants.

    Scientists are now looking for new ways to make clothing materials. They hope the new materials are both comfortable and good for the earth. Scientists have worked out how to make materials out of cornhusks (谷壳), chicken feathers and rice straws.

    "They used to be useless things. We always have a problem of how to deal with them," Yang, a scientist says. "Now, we can turn them into beautiful materials. Chicken feathers are better than other things. They have small air pockets like honeycombs. That means it will be very warm if you use them to make a jacket or sweater, and I think more and more people will like to buy these kinds of clothes."

    In England, people often talk about the weather because you can experience four seasons in one day. In the morning the weather is warm just like in spring. An hour 1 black clouds come, and then it rains hard. The weather gets 2 cold. In the late afternoon the sky will be clear, the sun will begin to shine and it will be summer at this time of a day.

    In England, you can also have summer in winter, 3 have winter in summer. So in 4 you can swim sometimes, and in summer sometimes you should wear warm clothes.

    When you go to England, you will see some English people take umbrellas or rain-coats with them on the 5 morning, but you shouldn't laugh at them. If you don't take an umbrella or a raincoat, you will regret later in the day.

    Water is the1of all the things we eat and drink. Not many people understand this but2quite true. The human body3go without food for a long time. We've got many examples for this. Yet two4three days without water can usually make people5. Man can't live6water.

    Many people don't understand how7water the human body needs8work well, and many people, especially young people, do not drink enough,9in very hot weather. Our body is mostly water, about 65% to 75%. That is to say about two thirds of our body is water. When we do sports, some of the water will get away from our body.10we don't drink some water, we won't have enough water. If we don't have enough water, we'll feel tired and many of us will get ill. So you know how important water is to us.

    Imagine you are taking a walk on the beautiful beach. Just then, your feet step over something and you hear a crack (噼啪声) —an empty plastic bottle. Things like this are happening more often because of sea rubbish.

    Studies show that 80% of all the waste is from the land. The waste is mainly plastics (塑料制品) which are really hard to degrade (降解). So the rubbish will remain there for a long time. Some of the pollution is caused accidentally. For example, about 10,000 product-filled boxes are lost at sea every year from business ships. Sometimes people just throw things into the water from boats or land. Many large rubbish areas are formed in the North Pacific Ocean.

    Thankfully, the situation isn't ignored (忽视). Groups like the National Oceanic and Atmospheric Administration (NOAA) are taking action to help clean the sea. Since 2006,76 projects have cleared out 3,814 metric tons (公吨) of rubbish from the sea. Methods of rubbish cleaning include using machines to remove (移除) the waste away from the surface of sea water. Besides, special nets are set by the mouths of rivers to stop the rubbish before it reaches the sea. If everyone does his part, sea rubbish seems like a problem that can be solved.

A Bite of China

Are you an eating-lover? Do you want to eat every delicious food in the world? Then do you watch the popular program A Bite of China? It's a TV program on Chinese delicious food which has been produced by CCTV. Is there any holiday that isn't celebrated with special festival food? Here are several traditional Chinese foods:

Noodles are a symbol of long life in Chinese culture. They are as much a part of Chinese birthday celebration as a birthday cake with its candles lit in many western countries. Since noodles mean long life, it is considered very unlucky to cut it off.

Although westerners sometimes may be very sorry to see fish lying on the plate, in China a whole fish is a symbol of richness. In fact, at a party it is a tradition to serve the whole fish last, pointed towards the most valued guest. Fish also has a special meaning because the Chinese word for fish, yu, sounds like the word for richness or plenty, and it is believed that eating fish will help your wishes come true in the year to come.

A very popular dish during the Dragon Boat Festival is Zongzi. This tasty dish is made of rice dumplings with meat, peanuts or other delicious food in bamboo leaves. The tradition of Zongzi is meant to remind us of a great man, Qu Yuan in Chinese history.

Sleep Tight!

Many teens aren't getting enough sleep.According to a U.S.survey，more than 1/5 teens have difficulty falling asleep or staying asleep.Here，some health experts are offering tips to help teens get a better night's sleep.

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Try changing one bad sleep habit at a time.For example，avoid having a big meal close to bedtime or make sure your room is dark and comfortable.It's not possible to change everything all at once.If you can change one habit even several night s a week，that's great.

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We have plenty of research showing how destructive technology is to sleep.No one—children or adults—should have a phone in their bedroom at night.If that's too hard for you，you can start with some easier ways to reduce the damage of nighttime screen time.Passive（被动） use，is better than active use，like gaming.

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Many of you like to sleep late on weekends.This can affect your weekday sleep.On Sunday night，you haven't been awake long enough to fall asleep at the right time.You'll then have trouble getting up for school on Monday morning.Then your whole sleep schedule just gets out of control.So it's necessary to set a proper bedtime on weekends.

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Like adults，some teens may have a lot of worries on their minds："Oh，no!I still have so much work to do.If I don't get enough sleep，I'll fail my test tomorrow!"

If you are one of these teens，try keeping a diary.Write down what you did today and what you plan to do tomorrow.You can also just write about your worries.It can help you get rid of them.

A.Control screen time before bed

B.Keep a diary to reduce stress

C.Avoid sleeping late on weekdays

D.Start with small changes

E.Set a normal bedtime on weekends

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