Most American students go to traditional public schools. There are about 88, 000 public schools all over the US. Some students attend charter schools.

    Charter schools are self­ governing. Certain companies operate some charter schools. They are similar in some ways to traditional public schools. They receive tax money just as other public schools do. Charter schools must prove to local or state governments that their students are learning. These governments provide the schools with the agreement called a charter that permits them to operate.

    Charter schools are different because they do not have to obey most laws that govern traditional public schools. Each school can choose its own goals and decide what to teach and how to teach them in their own way. Class size is usually smaller than in traditional public schools.

    The government strongly supports charter schools as a way to re­organize public schools, which are failing to educate students. But some education unions are against charter schools. One teachers' union has just released the results of the first national study, which compared the progress of students in both traditional schools and charter schools.

    The results of the study show that charter school students performed worse on math and reading tests than the students in traditional public schools.

    Some experts say the study is not fair because students in charter schools have more problems than students in traditional schools. Other education experts say the study results would make charter school officials realize that they should help their students make greater progress .

    Most people, when they travel to space, would like to stay in orbit (轨道) for a few days or more. And this stands to reason, if you're paying $ 20,000 for your trip to orbit! So in order for tourism to reach its full potential there's going to be a need for space hotels. What would a space hotel actually be like to visit? Hotels in orbit will offer the services you expect from a hotel—private rooms, meals, bars. But they'll also offer two unique experiences: impressive views—of Earth and space—and the endless entertainment of living in zero gravity—including sports and other activities that make use of this.

    The hotels themselves will vary greatly—from being quite simple in the early days to huge luxury (奢侈的) structures at a later date. It's actually surprising that as later as 1997, very few designs for space hotels were published. This is mainly because those who might be expected to design them haven't expected the costs to come down far enough to make them possible.

    Lots of people who've been to space have described vividly what it's like to live in zero gravity. There are obviously all sorts of possibilities for dancing, gymnastics, and zero-G sports. Luckily, you don't need to sleep much living in zero gravity, so you'll have plenty of time for relaxing by hanging out in a bar with a window looking down at the turning Earth below.

    Of course all good things have come to an end, unfortunately. And so after a few days you'll find yourself heading back to the earth. You'll be thinking how soon you can save up enough to get back up again-or maybe you should change jobs to get to work in an orbiting hotel!

    A telescope, called Gaia, is being designed by astronomers in Europe, and it couldn't be more different from Pan-STARRS, which is another telescope being designed. While Pan-STARRS will be looking for asteroids (小行星) and comets headed for Earth, Gaia will be looking at our entire galaxy (银河系).

    Gaia is designed to draw a map of the Milky Way, our home galaxy. Just as a map of your town gives you a picture of where things are located, Gaia's map of the galaxy will tell astronomers where the stars are. Over five years, Gaia will observe (观察) about a billion stars and other objects in our galaxy. Each object will be observed about 70 times.

    Gaia will be sent into space connected to a rocket. It contains two telescopes, each focused at a different angle (角度). These two telescopes act like Gaia's “eyes”. The reason why humans can see things in 3D is that we have two eyes focused on the same object, at slightly different angles. By using two telescopes like eyes, Gaia can produce the first 3D map of the positions of the stars it views.

    Gaia, which is to be sent into space, will be a powerful telescope. If you were to use it on Earth, for example, you could stand 600 miles away from your best friends and still get a clear picture of their hair.

    Gaia is one of more than a dozen telescopes being designed by scientists right now. The next generation of telescopes will reveal new parts of our universe that will seem surprising. The universe, with all its planets, stars and other strange objects, is a puzzle with pieces that we can see by using powerful telescopes.

    Opened in September 2005, Hong Kong Disneyland is the second Disney Park in Asia. It experienced a difficult time upon its opening. The Park, as well as two themed hotels, was built on Lantau Island.

    The Park opened to strong competition in the form of Ocean Park. Hong Kong Disneyland is one of only two parks in Hong Kong, which has become one of the world's leading cities in recent years. It kept Chinese cultural traditions in mind when they built the Park to avoid a cultural backlash (抵制). Designers added to the custom of Feng Shui.

    Disney and Hong Kong announced the Park in 1999, and construction (建设) began in 2003. The Park had one of the shortest construction periods in Disney history. Disney actually announced that the opening of the Park would be brought forward, from 2006 to September 2005.

    The Park attracted 5.2 million visitors in its first year, below the expected 5.6 million. There was a lack of attractions, with Fantasyland opening with just one dark ride. Summer Passes were announced to increase the number of tourists. Autopia, Stitch Encounter and it's a Small World opened between 2006 and 2008 to offer more attractions at the Park.

    The number of tourists dropped in 2007 to just over 4 million, so Disney planned a big expansion (扩大) project to attract more tourists and bring the Park back to its normal level. In July 2009, the Legislative Council of Hong Kong passed a three-land expansion of Hong Kong Disneyland, and in 2010, Toy Story Land opened.

    These new attractions have certainly paid off, with the Park earning record profit (盈利) in 2013. In that year, over 7 million guests entered the Park.

    With enough room for a second Park and the promise of more attractions to come, it seems that there is indeed a great beautiful tomorrow for Hong Kong Disneyland.

    The man goes quietly into the room. He stands over the bed where his three-day-old son is lying and begins to speak to him.

    "My son, I have dreamt of you for many, many years. I had your name picked out even before you were born because I knew that I wanted you. Every time I thought of you I would have a smile on my face. Gabriel. You always gave me joy."

    "I really hope we have a great relationship, where you can talk to me about anything and not be embarrassed. Most of the time it will seem like I am too old to understand, but I'm sure you will see that, as I did with my father, my advice is some of the best you will get."

    "I am sorry for the misunderstandings (误会) we will have, but you will understand I spent my whole life waiting for you. You are my son, so I am not going to sit back and watch you hurt yourself. You are very important to me."

    The man stops and looks at his son. Then he begins to sob (呜咽).

    "Sorry my dear, I'm crying because something bad happened. I am seriously ill. I will leave you soon." The man gives a weak laugh. "This is the first time in many years I have been brought to tears." The man kisses the baby who is sleeping so soundly and whispers, "I will love you forever."

    It has been described as art by some people, but to others it's an ugly part of modern life. What is it? Graffiti (涂鸦), of course. Look around cities in the UK today and you can see graffiti on buildings, walls, doors and even on buses or trains that have stayed in one place for too long. But where modern technology creates a problem, it also finds a way to deal with it. Last week, The Weekend West was shown around the factory of a small but successful company, Hubdean.

    Hubdean's achievement is a series of special paints which are graffiti-resistant. How do they work? It couldn't be simpler. Take any graffiti-covered surface. First, a treatment called Agproclear is used. Then, using a very hot pressure jet (压力喷嘴), this treatment is taken away and the graffiti disappears at the same time. Now you have a clean wall. But before this clean wall can be painted on by graffiti lovers, a new product, Agproshield, is used. This paint has a special surface which gives it two important advantages. Firstly, spray paint (喷雾颜料) won't stick to the surface very well, and secondly, the whole surface can be cleaned very easily, just using water. Once the surface is painted, no specialist equipment is needed to keep the area clean and graffiti-free.

    Not surprisingly, Hubdean's products are used by both local governments and private companies all over the UK, and now orders are being received from around the world. This brings the company a problem, however. Can they increase production to satisfy the needs? Of course, they can build a second factory or work with a large international company to make their products. The future is looking good for Hubdean!