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如图所示,在三棱锥A﹣BCD中,侧面ABD,ACD是全等的直角三角形,AD是公共的斜边且AD= 3 ,BD=CD=1,另一侧面ABC是正三角形.

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    An Interview with Pascal De Sarthe

    French-born Pascal de Sarthe was self-taught and becoming more and more famous among the art businessmen in the 1980s. He became one of the most recognized gallery managers of the 21st century. He made Hong Kong his base in 2010. Today, with one gallery here and another in Beijing, he's clearly fallen in love with art.

    By Philippe Dova

    What made you decide to based in Asia?

    I have been coming to Asia since 1981, doing business first in Japan and Korea, then in the early 90s in Taiwan, China and Southeast Asia. Half of my business was in Asia and I quickly started spending two weeks of every month in his area. I made many friends with new collectors who were interested in both Western and Eastern art. In 2010, staying in Asia and opening a gallery in Hong Kong seemed like the natural thing to do.

    Why Hong Kong?

    There was nothing to indicate that Hong Kong would become the center of the Asian art market. However, there were the wonderful location, the tax(税)advantages and so on---everything just came together.

    Art Basel came to Hong Kong shortly after you did

    There was already Art HK, but after careful research of the market. I believed it was reasonable for Art Basel to take over Art UK.

    What will you be exhibiting at Art Basel this year?

    We'll be showing only postwar Asian artists and new-generation Beijing artists. At the same time, we'll be opening our new gallery in Wong Chuk Hang on the south side of Hong Kong Island.

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Our brain is collecting information about the world around us all the time. It gets information from what we see,hear, touch, taste and smell. The brain works out what all this means and then we show a particular emotion (特别的情感) to all that information.

 But children with autism (自闭症) are different from us. In fact, children with autism can get all the information, but they are not able to understand it all.

★Their ears can hear normally, but their brain cannot understand what others are saying. Sometimes, sounds that we like are far too loud to them. They may feel really upset by the everyday noises and will try to shut them out of their ears.

★Their eyes can see normally, but some things seem to hurt their eyes; some things seem to be very interesting.

★Sometimes they are so interested in looking at something that they can't notice what else is going on around them.

★They may be more comfortable learning in their own homes or in a special class at school.

★They may not be able to learn much about a lot of things, but they may know a large amount about one or two things.

★They will have trouble communicating by talking, listening and watching, or understanding what people mean when they are talking.

★People who have autism are born with it, but the signs that they are having problems usually do not show up until they are at least a year or more older.

Everyone needs to feel loved. If you have someone in your family or in your class who is autistic, you can help him by encouraging and caring.  Try to give them love. It will make them feel much better.