The world is in danger. At one time there were 1,300 different plants, trees and flowers in Holland, but now only 860 remain(剩余). The others have been destroyed(破坏) by man. We are changing the earth, the air, the water and everything that grows and lives. We can't live without these things. If we continue doing like this, we will destroy ourselves.

    What will happen in the future? Perhaps it is more important to ask "What must we do now?" The people who will be living in the world of tomorrow are the young of today. A lot of them know that conservation(对自然环境的保护) is necessary. Many are helping to save our world. They plant trees and protect animals in forest. In a small town in the United States, a large group of volunteers cleaned the banks of their rivers. Young people may hear about conservation through a record called No One's Going to Change Our World. It was made by the Beatles, Cliff Richard and other singers. The money from it will help to protect wild animals.

    I'm Yu Fei. I come from No. 1 Junior High School in Ji'nan. It is {#blank#}1{#/blank#} beautiful. My friend Xiaoli is in this school Xiaoli is of medium {#blank#}2{#/blank#}. She has {#blank#}3{#/blank#} hair, a long face, a small mouth and big {#blank#}4{#/blank#}. She is thirteen. She is in Class Five, Grade Seven. She is a good student, and she is good at painting pictures. She hopes to be an {#blank#}5{#/blank#} when she grows up. She has two good {#blank#}6{#/blank#} in her school. They are Lucy and Lily. They are {#blank#}7{#/blank#}. They are twins. They are fourteen They have big noses and big eyes, and they are very {#blank#}8{#/blank#} and thin. Lucy, Lily and Xiaoli are in the {#blank#}9{#/blank#} class. Mrs. Smith is {#blank#}10{#/blank#} English teacher. She is friendly to them and often helps them.

Whenever I'm invited to somebody's house for the first time, I'll take a close look at their bookshelves. What they keep on their shelves, in my eyes, is a reflection(反映) of their personal tastes and interests. The books on a bookshelf tell the story of a life.

My own shelves are a kind of road map through my life, telling a chronological tale. First up come my favorite childhood reads, like Water ship Down and His Dark Materials. The collection then moves on to teenage things I read in school — Nineteen Eighty-Four, The Handmaid's Tale and A Clockwork Orange. Finally, we come out of full-time education and enter the real world, and this part is a reflection of my professional( 职业的) life, from the first exciting days of their work experience to the present.

If you pointed to any book on my shelves, I could name the year I got it, where I was working, and probably where I was living at the time.

▲  It is an easy way to get to know about his hopes, dreams and interests. And a big part of that story is how we arrange our books, and get on with them. It's such a personal thing, different from each other. Some want to be with their books in every room, others have them on shelves, behind glass or simply lining their floors. Each home has a story to tell through the way they live with their books.

It's often said that what we read says something about who we are. The way we fill our bookshelves might also send a message about ourselves. From the pile of books on your bedside table to your well-organized shelves, whether we notice it or not, our book collections are telling a story before a single page has been turned.

    A new rubbish sorting system (垃圾分类系统) has been put into use in Fangchengyuan Community in Beijing. Local people not only sort their rubbish, but also put QR codes (二维码) on it.

    "When the rubbish is collected and the codes are seen, I will get reward points to exchange for small gifts and even some money," one of the local people told reporters. "It's really creative and encouraging."

    This smart system has been carried out in 350 communities in Beijing. The capital of China has joined a list of cities in the country that take action to support rubbish sorting. For example, Shenzhen and Shanghai have made laws to punish people and organizations for not sorting rubbish correctly.

    China produces quite a lot of rubbish every year. Much of the rubbish is buried (填埋) in soil or burned without being sorted. Landfills (填埋场) take up a lot of land and have a risk of polluting the soil and water nearby. And burning rubbish can produce harmful gases. Through rubbish sorting, we can reduce the use of landfills and air pollution.

    What's more, rubbish sorting saves resources, which could bring economic benefits (经济利益). For example, a ton of waste paper can be reused to make about 850 kg of paper, saving 17 trees and 50 percent of water. Because of the benefits, some countries have developed successful sorting systems.

    Japan has a strict and detailed system. When people throw away a water bottle, the cap, the wrapper (包装纸) and the bottle itself have to go into three different bins. Every year, families receive special rubbish sorting timetables and directions from their local governments. They are advised to follow the timetables and directions when they throw away rubbish.

    In Australia, every family is provided with three rubbish bins—the red lid (盖子) bin for "general waste" like food and plastic bags, the yellow lid bin for "recycling" like steel and glass, and the green lid bin for "green waste" such as grass and leaves. On the streets, the bins are printed with pictures of the things that are allowed inside. It makes recycling quite easy.

    Hye-seung Hyun is a girl from South Korea韩国). She lives with her parents, sister and brother in Seoul. What is her school day like?

    Hyun gets up at seven. Her family usually eats breakfast at half past seven. Mom often makes breakfast.

    Hyun goes to school at 8:15. Classes in the morning are from 9:00 to 12:00. There are usually three lessons. Hyun loves art best.

    Hyun has lunch at school at 12:30. She doesn't have time to go home. Classes in the afternoon are from 13:00 to 15:00.

    After having a swimming lesson in the afternoon, Hyun has dinner at six. After dinner, she practices English and the piano. She goes to bed at 22:00. Before it, she talks with her family for some time.

A tornado (龙卷风) is a kind of strong storm with air which moves in a circle quickly. They can move over 200 miles per hour and cause a lot of damage (损坏). As they move across the land, they can easily pick up cars, trucks, and even houses, and then throw them very far. It is important to find a safe place if a tornado gets close.

A safe place could be a basement ( 地下室) or the lowest floor. If you are in a home without a basement, try to find a first-floor bathroom or a small room without windows in the middle of your house. You should curl up (蜷缩) into a ball and cover your head and neck with your hands.

But there are some people who actually want to get close to tornadoes. They are scientists who want to learn more about tornadoes. One of the best ways to do this is to get as close as possible to the tornado. They use special tools to measure (测量) what is happening in and around a tornado.

One special tool is called a tornado probe ( 探测仪). Inside the tornado probe, there are sensors (传感器) to measure wind speed, temperature, pressure, and direction.

Some probes even have cameras, so the scientists can see and understand what it's like to be in a tornado.

To be able to get these measurements, the scientists have to get a tornado probe near or into a tornado. Scientists will try to guess where a tornado will go next. Then they drive to that location and put down the probe. If they do not guess correctly, they pick up their probe and try another place. If they are right, the tornado will go near or even right over the probe. Then they take all of the measurements

from the probe and use them to predict where future tornadoes may form (形成) and travel. And they can give people some warning to keep away from a dangerous tornado.