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.

    Jack is my best friend. He is in a new school. He likes it very much. It's not far from his home. And it usually takes him 10 minutes to get to school by bike. School begins at 8: 00 every morning. But these days Jack is often late for school. This morning, he is late again. The teacher is very angry.

    "How do you usually come to school?" asks the teacher. "By bike." Jack answers. "What time do you usually get up?" "At 6: 30." "Well, it's not late. What time do you usually leave home?" "I leave home at 7: 55." "Why not leave home earlier?" "My mother is ill (生病的). She stays in bed all day. I must look after her and give her medicine at the right time， so I'm often late for school," says Jack with tears (泪水) in his eyes. "I see, Jack, you are a good boy!" says the teacher.

Hello! My name is Li Hua. I am {#blank#}1{#/blank#} student of No.5 Middle School. I am in {#blank#}2{#/blank#}(class) 5,Grade 7. I like spring because the weather {#blank#}3{#/blank#}(be) warm. I like green best. My two {#blank#}4{#/blank#}(ruler) are green. And my school bag is green {#blank#}5{#/blank#}.That boy is my good friend. {#blank#}6{#/blank#}(he) name is Tony. He likes summer because he can go {#blank#}7{#/blank#}(swim) in summer. At school, he likes art best because he likes {#blank#}8{#/blank#}(draw).Look！There is one red {#blank#}9{#/blank#}(apple) and three green {#blank#}10{#/blank#}(banana) in his picture.

"Our teas can help protect your teeth and your heart, possibly even helping to prevent cancer," said Luo Shengkai, one of four student hosts from Sichuan University High School. They 1 introduced three self-made health teas through a livestream (直播) on Douyin 2 March 27, 2022, and they 3 for several weeks by now. The livestream got over 60 4 likes and many online orders, with all profits (收入) going to local tea farmers.

"It's 5 first time we have sold tea online. We not only need to introduce 6 tea, but we also need to interact with the audience and answer their questions," said Luo. "We've learned a lot from the process, 7 it's tiring."

Luo is one of a group of students 8 take part in a two-year course on tea research. They learn about tea planting and picking, tea making, package design and marketing through research and fieldwork.

However, 9 a new and popular tea isn't easy. Luo and his team members 10 a tea to better protect students' eyesight. They first met with a professional from Chengdu University of Traditional Chinese Medicine and researched the properties (特性) of local tea. Then they learned 11 functions of ingredients such as goji berries (枸杞), mangosteen (山竹果) and cassia seed (决明子) and did experiments to find what would happen if they 12 all together. They ended up with a cassia seed tea and then added 13 ingredients based on people's feedback.

"Through the tea course, students 14 learn how to be creative and improve their hands-on skills. They also learn to respect tea workers and how to contribute to rural vitalization (乡村振兴). That's 15 our educational means." said Mi Yunlin, the principal of the school.

参考词汇：mobile phone（手机）

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