It's not WASTE until it is WASTED

    With the World Environment Day coming, our school is now requiring every student to form a habit of sorting the waste.

    Here in our schoolyard we lay four different colors of rubbish bins for different kinds of rubbish. The red is for harmful waste; the blue is for waste that can be recycled(循环再用); the green is for kitchen waste; the yellow is for other waste.

    The following are some instructions for you

    Glass: Empty bottles without caps can be recycled to make new glass bottles.

    Warning: Mirrors and light bulbs(电灯泡) must not be included in the glass waste.

    Paper: Newspapers, magazines, boxes must be clean enough to be recycled.

    Warning: Paper tissues (餐纸) and wall paper are not recyclable as paper and should be kept separately.

    PMD waste: Packaging made of Plastic or Metal and Drink boxes are used to make new packaging.

    Warning: Plastic pots(e. g yoghurt pots ), plastic bags must not be included with the PMD waste.

    Harmful waste: out-of-date drugs, used batteries(电池)， paint and oil…

    Besides, if you don't need your old bikes at all, our school volunteers will collect them. We're going to fix them up and then give them away to kids who don't have enough money for a bike.

    To find out more about recycling, you can visit our school website.

    Many people thought a computer wasn't supposed to be able to beat a top master at the ancient Chinese game, Weiqi, for at least another 10 years. But AlphaGo, an artificially intelligent system (人工智能系统) designed by Google, made it. It easily beat Lee Sedol last year, one of the best players in the world. It challenged the world's top players to show how much progress it had made over the past few years.

    In late May, 2017, AlphaGo appeared in China and played against 19-year-old Ke Jie in Wuzhen, China. He is No. 1 player now in the world. However, the result wasn't out of people's expectation. He lost the match. Though Ke Jie tried his best and he once saw the victory just a step away, he lost his best chance when he became excited.

    At the press conference (新闻发布会) after the match, Ke Jie was interviewed by the reporters. He said he had realized how powerful AlphaGo was, and it was getting perfect. When a Chinese reporter asked him in English, the reporter spoke so fast that the interpreter (口译员) couldn't catch him. Ke Jie got kind of angry and told him that it was unnecessary for two Chinese to speak in English. The reporter apologized to him and offered to ask him for a coffee.

    The cat and mouse game is over, but the challenge between man and robots will still go on.

    Carrots (胡萝卜) are grown on farms and in small family gardens all over the world. They are easy to plant and easy to harvest (收获). They have a good taste.

    When people think about carrots, a picture of a long, thin, orange-colored vegetable usually comes into their minds. But carrots come in many different sizes and shapes. And not all carrots are orange.

Carrots should be grown in sandy soil that does not hold water for a long time. The earth also should not be too hard. To prepare your carrot garden, dig up the earth and turn it over (翻土).

    Weather, soil, condition and time affect (影响) the taste of carrots. Warm days and cool nights are the best time to grow great delicious carrots.

    The best way to decide if a carrot is ready to be harvested is by its color. Usually, the brighter the color is, the better the taste is.

    Most people do not know that carrots can be grown during the winter months. If the winter is not cold enough to freeze the ground, you can grow and harvest carrots the same way as you do during the summer months.

Carrots are prepared and eaten in many different ways. They ate cut into thin pieces and cooked with other vegetables or meat. They are also washed and eaten just as they come out of the ground.

    When the Audet family turns on the lights at Blue Farm, they are using electricity that comes from cows- cow manure(粪肥).

    Cows produce a lot of waste. One cow can create 30 gallons of waste each day. Now imagine the output of over 1,000 cows at Blue Farm. That's really a big amount.

    When farmers clean their barns, they put the waste together，and spread some of it on their fields for fertilizer(肥料). But now places like Blue Farm have a new way of using cow waste. They use it to produce electricity.

    Here's how it works: A big machine moves back and forth cleaning the barn floor. "The cows are animals of habit; they get used to it,and just lift one foot and then another to let it go by. "says Marie Audet.

    The machine pushes the manure into a big 600-gallon tank like a small swimming pool. The tank is called a digester(化粪池) because what happens there is just like what happens inside a cow: Bacteria(细菌) get to work and continue to digest the manure.

    Methane gas(甲烷;沼气) in the atmosphere is known as a "greenhouse" gas because it keeps heat just like a greenhouse does, causing our planet to warm up. That's an environmental concern. But the digester has a good result. Its gas is kept and used to power electric generators(发电机).

    At Blue Farm, the generators make enough electricity to power 400 homes. The Audet family sells the extra electricity they can't use themselves.

    What will man be like in the future-in 5. 000 or even 50, 000 years from now？We can only make a guess, of course, but we can be sure that he will be different from what he is today. For man is slowly changing all the time. Now look at the chart below, and you'll find some differences.

    Perhaps all this gives the impression that future man will not be a very attractive creature(生物) to look at！This may well be true. All the same, in spite of all these changes, future man will still have a lot in common with us. He will still be a human being, with thoughts and emotions(情感) similar to our owns.