At long last, Stefano Boeri Architects' brilliant Bosco Verticale towers are finally completed. The “world's first vertical forest” consists of a fantastic pair of costly towers that add nearly 2.5 acres of lush vegetation to the sky line of Milan, a city notorious (声名狼藉的) for its air pollution. {#blank#}1{#/blank#} Like a pair of green lungs, its forested appearance of 21,000 plants will absorb CO₂, control noise pollution, lessen the urban heat island effect, and create oxygen and favorable micro-climates.

    The Bosco Verticale mixed-use towers are constructed with a $2.5 billion public-private investment as part of the re-development of Milan's Porta Nuova district. The towers, measuring 260 feet and 367 feet, house 800 trees between 9 and 30 feet tall, over 4,000 shrubs (灌木) and 15,000 ground cover plants. Bosco Verticale is created with LEED Gold Certification (绿色建筑黄金认证) in mind. {#blank#}2{#/blank#} 

    The buildings shrub have welcomed their first residents. {#blank#}3{#/blank#}  A fast-growing bird population has already begun to nest in Bosco Verticale's rich leaves, of which over a hundred different species of trees and shrubs are represented. {#blank#}4{#/blank#} 

    The superstructure is also selected for the world famous International Highrise Building Award as one of the five most beautiful and original high-rises in the world that is completed. {#blank#}5{#/blank#} 

A. “We take great pride in this project, which may earn us an award” says Boeri.

B. Boeri is currently in China, where he plans to build another Bosco Verticale project.

C. It is also equipped with a gray water recycling and irrigation system.

D. However, Bosco Verticale will be more than just a beautiful sight to enjoy.

E. “The real key to this project is biodiversity,” says Boeri.

F. It is also well received by the Chinese experts in the field.

G. But those families aren't the only ones to call the vertical forest home.

    Imagine being a crew member, hundreds of years ago, sailing in southern waters. Your captain is searching for food while exploring unfamiliar waters. Your job is to watch the sea off the ship's side for ice. The wind is cold on your face. Alongside the ship, a fish darts past. Another slows to a stop and raises its head above the water to look at you. How could a fish do that?

    Did the sailors see fish with feathers or swimming birds? Today, we know that the sailors saw birds that developed the ability to swim. Their wings became flippers, and they could “fly” through the water with amazing speed.

    There are many types of penguins. Only two kinds raise their young on the continent of Antarctic. Adelie penguins grow up to 29 inches tall and have a white ring around each eye. Emperor penguins have yellow orange color near their necks. Standing about 35 inches tall, they are the tallest penguins living today.

    Emperor penguins have nests on top of their feet. Father Emperor penguins keep the egg on top of their feet for more than two months, until the egg is ready to hatch. The mother penguin goes out for food during that time. Imagine holding an egg on your feet for two months until someone returns with food!

    Male and female penguins are both good parents. Once the chicks hatch, both parents travel long distances to find food for them in the sea. It may be days before the parents return and the chicks eat again. When they return with food, the fun really begins. Chicks chase their parents, begging for food. Penguin chicks eat huge amounts at one time.

    Eventually, the adult penguins stop feeding the chicks. This is nature's way of forcing children to grow up. When the penguin chicks are hungry enough, they find their way to the sea. Without any swimming lessons, they make their way into the icy waters and swim as only penguins do.

                                                                       Balloon Volleyball

    It's a rainy, dark day and there's nothing to do. You don't feel like sitting quietly but you are not allowed to make a lot of noise. What can you do for fun? Try balloon volleyball.

    Items needed for this game: a balloon (or two, in case the first one bursts), some ropes, two chairs, at least two people and a room.

    Set up the room. If you're in the living room, or a family room, be sure to move all the furniture out of the way. Get two chairs and set them in the middle, outer edges(边缘)of the room. They should be at the same place where you put a volleyball net. Turn them so that the seat is facing the wall, not the “playing” space. Tie the rope onto the top of the chair, and run the rest of the rope to the other chair. Now tie it on this chair at the same place as the first chair. You can decide the “out-of-bounds”(出界) lines, if you want to have them, but they really are not necessary in this game.

    Blow up the balloon. Choose sides. You will play this game on your knees (at least until they start hurting and you want to stand). Each side must get the balloon over the rope in three hits. If it does not get over, the other side gets the balloon and a point. This game becomes more difficult because you must play without talking.

    You can also add other rules to make it more difficult; for example, you can only use your left hand or only your right hand to hit the balloon.

    Continue playing until one side gets 10 points. You can make your game longer or shorter by changing the number of points it takes to win.

    This is a fun way to get your energy out, have fun, and not make too much noise on a rainy, stay-in-the-house day.

    Suppose you are a visitor in the land of Mongolia, some friends ask you to eat with them. What kind of manners do they want you to have? They want you to give a loud burp (饱嗝)after you finish eating. Burping would show that you like your food. In some countries, if you give a big burp, you are told to say “Excuse me, please”.

    In many places people like to eat together. But in some parts of Polynesia it is bad manners（没礼貌） to be seen eating at all. People show their good manners by turning their backs on others while they eat.

    What are manners like in an East African town? The people try not to see you. They are being polite. You may see a friend. He may not see you at all. If you are polite, you will sit down beside him. You will wait until he finishes what he is doing. Then he will talk to you. Manners are different all over the world. But it is good to know that all manners begin in the same way. People need ways to show that they want to be friends.

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