Our school is a green school．What makes it green？

    First，we have a lot of trees．There are trees in front of and behind every building．Some trees are green only in spring and summer．And some are green all year round．The trees make our school look like a big forest.

    And our school is a green one because we "go green". How do we go green？We have two green days every month．On green days，no students or teachers go to school by car．And we have clean﹣up Day every month．That day，students go to streets to pick up rubbish．Also，we have tree﹣planting Day every spring．We plant young trees on hills．We have three green clubs The members of the clubs look after those trees well．

    Green is not only a colour．It is about life．Please go green with us and make the world a more beautiful place．

    There are millions of stars and planets in space. What's the difference between stars and planets? Stars can give out heat and light, but planets cannot.

    The sun is one of the stars. Some planets are balls of rock and some are balls of gas. We live on the planet earth. The earth spins around once every day to give us day and night. The earth goes around the sun once every year to give us different seasons.

    There are eight planets moving around the sun. We call the family of the sun and its planets the solar system. Mercury is the nearest to the sun, so it is very hot. It is the smallest planet. Venus is very bright and hot. It is the nearest to the earth. Mars is covered with orange-red desi and rocks, so it looks like a red star in the sky. It has seasons like the earth. Jupiter has more than 16 moons （卫星）and it is the biggest and heaviest planet. Saturn has more than 22 moons. The other planets, such as Uranus and Neptune, are all very far from the sun and very cold. We need a telescope（望远镜）to see them.

    Cars make our lives more convenient. But they can also be a problem. For example, fossil fuel(化石燃料) cars mainly cause air pollution.

    To improve the environment, many countries are developing electric vehicles(EVs，电动车). Among them, China is' taking a leading role and has created the world's largest EV market.

    Last year, over 40 percent of the 753, 000 EVs sold in the world were sold in China, more than twice as large as the number sold in the United States.

    "Filling up a fossil fuel car with gas is more expensive than charging an electric car," said Wu Hao, who bought an electric car this year.

    However, there are still some problems. It can be hard to find charging piles and the cars can't go far before needing to be recharged.

    Some of these problems are being solved. In 2014, China had 31, 000 charging piles. Now China has the world's largest EV charging network, with more than 167，000 charging piles in total.

    Developing EVs is one of many efforts that China has made to cut down pressure on its environment after the government promised to stop increases in carbon dioxide emissions by 2030.

    "As China goes, so will the world's car industry," the Wall Street Journal said. China has taken a leading role in the world's electric vehicle industry.

    There is one thing. We can't see it. Sometimes we can hear it and even feel it. Without(没有) it, all the living things will die. Do you know what it is? Oh, it is air.

    However, what's the air like today?

    In cities, there are too many people and too many cars on the roads. The cars send out (排放) a lot of bad gases(气体) In cities, there are many chemical factories(化工厂). They send out terrible smoke every day. This kind of smoke is very bad for our health. Now the air is becoming worse and worse. Every day, we breathe (呼吸) the bad air in and out. This is very unhealthy for us and it makes us feel sick.

    To keep us healthy, we have to go to the countryside to breathe more fresh air. Or we can go up hills to get more fresh air.