All living things on the earth need other living things to live. Nothing lives alone. Most animals must live in a group, and even a plant grows close together with others of the same kind. Sometimes one living thing kills another, one eats and the other is eaten. Each kind of life eats another kind of life in order to live, and together they form a food chain (食物链). Some food chains are simple, while others are not. But all food chains begin with the sun, and all food chains become broken up if one of the links (联系) disappears.

    All life needs sunlight to live on. But only plants can use sunlight directly (直接). Plants are “factories”. They make food from sunlight, water and things in the soil (土壤) and air.

    Plants feed all other living things. Animals can only use the sun's energy (能量) after it has been changed into food by plants. Some animals feed directly on plants, others eat smaller animals. Meat-eating animals are only eating plants indirectly.

    What about human beings? We are members of many food chains. We eat wheat (小麦), rice, vegetables, fruits and so on. We also eat meat and drink milk. But humans often break up the food chains. They kill wild animals. They also make rivers, lakes and seas dirty. When these rivers, lakes and seas are polluted, the fish in them cannot be eaten. If men eat the fish, they will get strange diseases (疾病).

    Each form of life is linked to all others. Breaking the links puts all life in danger.

    Now satellites(卫星)are helping to forecast(预报)the weather. They are in space and they can reach any part of the world.The satellites take pictures of the atmosphere(大气), because this is where the weather forms(形成). They send these pictures to the weather station. So meteorologists(气象专家)can see the weather of any part of the world. From the pictures, the scientists can often say how the weather will change.

    Today, nearly five hundred weather stations in sixty countries receive satellite pictures. When they receive new pictures, the meteor- ologists compare(比较)them with earlier ones. Perhaps they may find that the clouds have changed during the last few hours .This may mean the weather on the ground may soon change, too. In their next weather forecast, the meteorologists can say this.

    So the weather satellites are a great help to the meteorologists. Before satellites were invented, the scientists could forecast the weather for about 24 or 48 hours. Now they can make good forecasts for 3 or 5 days. Soon, perhaps , they may be able to forecast the weather for a week or more ahead(提前)

Practicing yoga(瑜伽) is a helpful, popular way to keep fit. It has many followers around the world. There are many kinds of yoga. You may have heard of "hot yoga" before. Now, in India, a new kind of yoga, water yoga, is becoming more and more popular among the local people.

In the city of Agra, people practice yoga in water. It is more difficult to practice yoga in water than on land. But practicing yoga in water can be good for your flexibility (灵活性).

Harish Chaturvedi, a lawyer, teaches people water yoga for free even the poor people can learn from him. "Water yoga can become more popular than other kind of yoga, because the body does not get tired so quickly," he said. "Everybody can learn to swim, but if they learn yoga at the same time, they will never feel tired."

"The level of Oxygen(氧气) is very high in water, and you will not have any breathing problem," he added.

Harish believes that water yoga really helps people to keep away from illness. He mainly trains children. He has classes at the swimming pool of a local sports room regularly. Many children are interested in it and come to team from him.

"Harish is very good at performing yoga in water," said Sudhir Narayan, a water yoga student. "He is teaching children free of cost and that is a very good thing."

● Earthworms are doing their part

Do you know that earthworms (蚯蚓) help to make healthy soil? Many scientists think they play a {#blank#}1{#/blank#} role in growing our food. New research has found that the animals help grow 65% of the world's rice. They make themselves one of the world's greatest rice {#blank#}2{#/blank#}.

How do the earthworms have the {#blank#}3{#/blank#} on soil? Worms make soil healthier by eating dead plants. As they eat the plants, they make something other plants need in order to grow. Worms also help soil keep water, and their movements {#blank#}4{#/blank#} tunnels that help plants grow roots. 

However, some scientists believe other living things in the soil can also do the similar things as the earthworms. They think more research is needed. 

● Wild elephants can solve puzzles

Recently scientists have found that wild elephants can solve puzzles with no training after the elephants in zoos were seen {#blank#}5{#/blank#} solving problems. 

Researchers at a wildlife area in Thailand set up puzzle boxes with three compartments (间隔). Each compartment was filled with jackfruit and opened in a {#blank#}6{#/blank#} way. By using cameras, the scientists watched 77 Asian elephants to see what they would do. By the end of the {#blank#}7{#/blank#}, they found that 11 elephants were able to get the fruit from one compartment, eight got into two compartments, and five solved all three puzzles to get the treats. 

Elephants that returned to try the boxes several times had the most success. Researchers say the ability to solve problems can help the animals {#blank#}8{#/blank#} in changing environments. And understanding how they do this could help scientists protect them in a better way.

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写作要求:1.短文必须包含以上表格中的所有要点,可以适当发挥;2.60词左右,开头已经给出,不计入总词数。

My new friend

Hello! My name is Li Hua.