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.

    Did you ever set up a lemonade stand (柠檬水小摊) when you were a kid？ Many of us did and if we were very lucky, we could make enough money to buy ice cream from the Good Humour Truck.

Last Saturday, Jack Yielding, a five-year-old boy from Oakville, Ontario, got $41,233from two lemonade stands and a car charity (慈善) wash. Jack gave the money to Toronto's Hospital for Sick Children, where Jack who has epilepsy (羊癫疯）, is a patient there.

    This was Jack's second year to host the Lemonade Stand for sick kids, and the whole town came to show their love. More than 1,000people came to the lemonade stands on Saturday.

    "Jack is working hard to turn his lemons into lemonade to help his friends at Toronto's Hospital for Sick Children," Jack's mother, Jodi Yielding, told us.

    The grand military parade (盛大阅兵式) and celebrations were held in Tian'anmen Square, Beijing on Oct. 1 for the 70th anniversary of the founding of the People's Republic of China.

    A grand military parade was held in the morning, showing the great progress made by the Chinese armed forces in recent years. About 15,000 officers and soldiers took part in the 80-minute parade in front of Tian'anmen Square. Then, a mass pageant(群众游行展) showing China's historical achievements and the nation's great rejuvenation(伟大复兴)was held. It was seen as a lesson on Chinese history and how far the nation has progressed. The mass pageant lasted 65 minutes and was divided into five parts, each part showed respect to Chinese leaders in the past and leaders now, from Mao Zedong to Xi Jinping. In the evening, a gala(盛会)took place in Tian'anmen Square. The songs, dances and fireworks celebrated the nation and its people.

    President Xi expressed warm National Day congratulations to Chinese people home and abroad. Standing on the Tian'anmen Rostrum in Beijing, where Chairman Mao Zedong announced the founding of the PRC on Oct 1, 1949, Xi recalled Chinese history. He also showed a road map for the country to realize the Chinese dream of national rejuvenation. He called for efforts to make a better life and to keep making achievements. The parade and celebrations have set off Chinese people's patriotism (爱国心)and a strong sense of pride.