Have you ever planted a few trees on Tree Planting Day? Each year, millions of people, both  1 , plant a lot of trees. But this may not be the best way to make your home a  2 place.

   Last week we visited a park in Hebei. We were  3  to find most of the trees had been burned. The workers told us that the trees 4 soon after they were planted because they weren't watered well enough. 5workers burned them and cleaned the place for 6 trees to be planted this year. 7 a card found in one of the dead trees, a student wrote, ＂I hope this tree will grow up with me to   8   the backbone(栋梁) of our country.＂The workers said that the survival(存活) of the trees was really more important than  9   trees were planted.

    Some people in Beijing now have a new idea that they can donate(捐赠) some money and let professionals (专业人士) plant and  10  the trees.

    We are lucky to live in a rich country where we have many things. However, some of us sometimes 1 some things.

    Electricity is one thing that we waste most. Lights, TVs, radios and other things are often kept on. We should turn them off when no one is using them. It 2 less than a second to do it. Anyhow, not wasting electricity 3 money, because we do not have to pay for the electricity we do not use.

    The second thing that we often waste is water. 4 water is precious (珍贵的) and important, so it shouldn't be wasted. It is only a(n) 5 matter of turning off a tap. I am sure everybody can do it 6 if he wants to.

    Another big waste is 7. My mother used to cook so much food that much of it was thrown away. I told her we had wasted so much food. She thought l was 8. And now she cooks only what we can 9 up.

    It is not right to be wasteful. I find there is a simple way of not wasting things. That is to use only what we need and not to 10 what we do not need. In this way, we can stop being wasteful.

    Animals are our friends. There are many zoos in the 1It's good to 2 animals in zoos. Zoos have many advantages, I think.

    Firstly, zoos are places for people to see 3 kinds of animals. Without zoos, most people would4see a real bear or tiger.

    5 , zoos can take good care of animals. Zoos give 6 to animals and. clean them on time every day. In the wild, it is not always easy for an animal to find food. So sometimes it goes 7. But animals in zoos never go hungry.

    Thirdly, people protect the animals in zoos and offer them safe places to live 8 Animals are living in zoos safely and happily. In the wild, some kinds of animals are 9 and endangered. But zoos give these animals a chance to live. Without zoos, there would be 10 kinds of animals in the world.  People should do more things to protect animals.

    There was a small village near the mountain. There were a lot of trees in the mountain. People in the 1 always got something from it, such as animals and trees.  When they wanted to 2 a house, they cut down the trees. And they also killed the animals for 3 . Trees were very 4 in their daily life. They made tables, chairs 5   beds by cutting down the trees. In addition, when they 6 meals, they still used some trees for wood. However, they only cut down trees but 7planted new trees. So the trees were fewer and fewer; the animals were becoming 8 as well.

    One summer, it rained 9in the village. The rain lasted for about a week. The soil(土壤)and the stones on the mountain fell down and soon 10  the whole village. They finally knew they should not only cut down trees but also needed to protect them.

    Today more and more people live in cities. So there is usually little room in a city to grow food.1of the land in a city is used 2 homes, shops, roads and parks. Most food for city people is grown in the country. It is often brought to the city by3, train and plane. Some food 4 comes into the city by car.

    Water is5 thing that cities get from the country. Everyone needs water every day. We use a little of it for6, but we use even more to 7bathtubs(浴缸) and wash streets.

    The water used in cities comes mostly from the rain. But people8use the rain that falls on cities. The rain becomes dirty as it falls through dirty air. Once it hits city buildings or streets, the rain will pick up more dirt. It is not good for drinking or bathing.

So cities must reach out to the 9 country for water. There the rain falls through air onto trees and grass. The fallen rain runs 10 rivers and lakes. So it is important to keep both cities and the country clean.

    Arctic fox (北极狐) is a kind of small fox that lives in the Arctic. It grows about 50 centimeters long, not including its tail, 30 centimeters tall and 1 from 3 to 7 kilos.

    The Arctic foxes are white or blue 2 color. The white ones are white in winter,3 gray-brown in summer. The blue ones are blue-gray all year round. The Arctic foxes have long thick hair 4 is called fur. And the long fur covers their whole bodies, including both their cat eyes and rabbit feet, to keep them 5in the low temperature in the Arctic.

    The Arctic foxes feed mainly on birds, birds' eggs and other small animals. Teamwork is the way they look for food, and they don't like to do that 6.

    Baby Arctic foxes are very lovely. They don't.7their eyes until a week after their birth. For the first half of the year, their parents offer them food. They begin to 8food on their own when they are about six months old. The next year they can live alone.

    Today,9the Arctic foxes is becoming smaller and smaller, because people kill them for their 10to make beautiful coats for money. Something must be done to protect the Arctic foxes.