More and more people like bicycling and it is no surprise. It is fun, healthy and good for the environment. Maybe that's why there are about 1.4 billion bicycles and only about 400 million cars on roads worldwide today. Bikes can take you almost anywhere, and there is no oil cost!

    Get on a bicycle and ride around your neighbourhood. You may discover something new all around you. Stopping and getting off a bike is easier than stopping and getting out of your car. You can bike to work and benefit (受益) from the enjoyable exercise without polluting the environment. You don't even have to ride all the way.

    Folding (可折叠的) bikes work well for people who ride the train. Just fold the bike and take it with you. You can do the same on an airplane. A folding bike can be packed in a suitcase. You can also take a common bike with you when you fly. But be sure to look for information by accessing on airline websites. Not all airlines are bicycle-friendly to travellers.

    Health Benefits of Bicycling:

    It helps to prevent heart diseases.

    Bicycling helps to control your weight.

    A 15-minute bike ride to and from work three times a week burns off five kilos of fat in a year. Bicycling can improve your mood (心情).

    Exercise like bicycling has been shown to make people feel better, more relaxed and self-confident. Bicycling is healthier than driving.

    Each one of us shares this planet with over seven billion others. And we all need1. People and products need to move from city to city and country to country. However, we all know2most cars, motorcycles, boats and planes cause air pollution. They are also3. This is a serious problem in many cities.4inventors are coming up with creative ideas to try to reduce the pollution and noise.

    In many cities around the world, motorcycles are very5. Now Vietnam has around 33 million motorcycles and China has almost 120 million. Motorcycles are a faster and cheaper way to get around a city than6. Yet air pollution is a growing problem. In large cities, people7it is difficult to breathe. To solve these problems, an American company designed an environmentally friendly motorcycle. It uses electricity as fuel (燃料). As a result, there is8pollution. It's also quiet and fast. This makes9a good choice for getting around a city.

    The Italian city of Venice is a city with only a few10. There are no cars in the city centre.11cars, water taxis and buses carry people along the city's canals (运河). However, they cause pollution,12to the water. English engineers Dick and Jem designed a solar-powered (太阳能的) water taxi. The water taxi13run for a day after being charged (充电).

    Planes also cause air and noise pollution. Designing an environmentally friendly airplane is a real14. Some airplane companies have15to solve the problems. Swiss engineers have gone one step further. They developed a solar airplane. This airplane even tries to travel around the world.

    Mike was the kind of guy you love to hate. He was always happy and always had something interesting to say. If someone asked him how he was doing, he would reply, "Couldn't be better!" He was really a care-free young man and never felt tired.

    Mike used to say, "Each morning I wake up and say to myself, 'Mike, you have two choices (选择) today. You can choose to be happy or you can choose to be upset.' I choose to be happy. Each time something happens, I am always ready to learn a good lesson. I choose to learn from life."

    I tried to understand what he said. Indeed life is all about choices. Every situation is a choice. The bottom line is: You're living your life and you make it either happy or sad.

    Several years later I had a car accident and my legs were seriously injured. When I was lying on the ground, I remembered that I had two choices: I could choose to live or choose to die. I chose to live.

    People like to say, "Choose the one you love and love the one you choose." Why not choose the one we love and live happily?

    I remember the first time I got on a horse. I was two years old and we were watching a friend of the family ride. My mom agreed to let me take a short ride around the ground with the friend and that was it' I became crazy about having a horse. From then on, I drove my parents mad beg­ging for a horse. Whenever I saw a horse, I would beg even harder.

    When I was four years old, problems appeared in my life. I had Selective Mutism (选择性缄默症). This is an unusual childhood disorder (失调) in which children stop speaking in certain social situations, many times at around the age of four. I spoke to my parents as usual, my brother and certain other people, but was silent at school and in social situations. I went days, weeks, months without a sound at school. At most, I might very quietly speak to a friend.

    My parents looked for a cure. One psychologist (心理医生) had an idea. Having discussed his plan with my parents in advance, one day I was asked by the psychologist what I wanted more than anything in the world. He explained that I was going to be given a chance to work for what I wanted. I couldn't believe my good luck, but I could not answer. I just stood there. Finally, I was allowed to whisper (低声说) the answer in my mother's ear. "A horse," was all I could say.

    I was to get a little horse, but before we could even start looking, I had to try to talk. I had a chart of weekly tasks I had to finish. I had to answer the phone five times every week, something I had never done before. I did everything that was asked of me and the day came when my parents found the perfect horse. His name was Sequoia, a strong little chestnut (栗子马). He was perfect, of course, and I fell in love immediately. It truly was a dream come true. When I was with Sequoia, I forgot all about my problems and felt strong and life.

    By connecting with them, I have learned to hug what I was once not able to do and I found my voice back.

    Have you heard of e-waste (电子垃圾), which can be produced every day? How do you deal with your computers, MP4 players or mobile phones when they're broken or you want a new one?

    Most people just throw them away. With the development of electronic industry (电子产业), e-waste pollution has become a serious problem. According to the United Nations, in 2014, people around the world produced 41.8 million tons (吨) of e—waste and only recycled 6.5 million tons. The US was the biggest waster, producing 7.1 million tons. China came second, with 6 million tons.

    It's important to pay attention to e-waste. It can be either valuable or harmful, depending on how we deal with it. E-waste is a valuable urban mine (城市矿藏). The value of the metals, like gold and silver in the waste around the world, is surprising. And the metals can be reused. But if people throw them away, the toxic chemicals (有毒化学物质) can get into the earth or air, affecting the environment and people's health.

    Apple, for example, now recycles people's used products in China when they are buying new ones. The company will test and repair the used ones and sell them at lower prices. To help reduce e-waste, we can buy longer-lasting electronic products. If you have unwanted electronics, find a new home for them. You can also take computers and phones to companies to see if they offer recycling programs.

    Want to be a hero? Better take a trip to the Great Wall. As the saying goes: You are not a hero1 you have climbed the Great Wall. As a wonder of architecture (建筑),it 2millions of tourists each year. Also, it is the most visited place for foreign leaders when 3come to China.

    The Great Wall has different sections (段)and each one is very 4 Jinshanling Great Wall in Hebei is 5 section. In spring, it is in the middle of a white apricot blossom (杏花林).6 summer time, green plants circle the wall. In autumn, maple leaves (枫叶) 7 a golden and red scene. And 8puts the great wall in a world of white snow.

    The "wild wall" is great for backpackers. Wild parts of the wall are for the adventurous (敢于冒险的人)9 they are the same as they were originally. Jiankou Great Wall is a famous one. Trees grow up from in between the stones. In some places, you have to climb the stones with both your hands and feet. Be 10when you visit the wild walls. You'd better not go there alone.