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Creating avatars (虚拟化身) is a possible job appearing from the rise of the metaverse (元宇宙). 1． The job of avatar maker has interested young people. According to the social platform (平台) Soul, over 80 young creators on the platform created 23,000 avatars from June to November of 2021.

2． So, virtual clothes makers are needed. 3． Users could buy the virtual clothes with real money to dress their avatars on this site. 4． This service helps IMVU attract 7 million active users each month.

5． As a result, people can buy land and build houses in the metaverse.

It might be fair to say that a new creator economy is on the rise because of the metaverse.

One day, a man visited an art factory. He saw a sculptor making a sculpture (雕塑). As he watched the man work on the sculpture found that there was a similar sculpture nearby.

He felt so strange and asked the sculptor, “Why are you making two same sculptures? Do you need two to put in different places?”

“No,” the man said without looking up, “We need only one, but the first one was damaged before I finished it, so I’m making a new one.”

The visitor picked up the damaged sculpture and checked it. But he couldn’t find anything wrong with it.

“Where is the damage?” he questioned.

“There is a scratch (划痕) on the sculptures nose,” the sculptor said while he was going on his work.

The man then asked, “Where are you going to show the sculpture?”

The sculptor replied that it would be shown on a six-meter platform (平台). “if the sculpture is up so high, who will see that there is a scratch on the nose?” the man asked.

The sculptor stopped his work, looked up at the man and said, “I will know it.”

The sculptor chose to keep to a high standard (标准) of excellence in his work. Even if other people didn’t notice it, he tried to make his work the best. We should work hard to keep on it.

In 1826, a Frenchman named Niepce needed pictures for his business. But he was not a good artist. So he invented a very simple camera. He put in a window of his house and took a picture of his garden. That was the first photo.

The next important year in the history of photography was in 1837. That year, Daguerre, another Frenchman, took a picture of his reading room. He used a new kind of camera in a different way. In his picture you could see everything very clearly, even the smallest thing. This kind of photo was called a Daguerreotype（银版照相）.

Soon, other people began to use Daguerre’s way. Travelers brought back wonderful photos from all around the world. People took pictures of famous buildings, cities and mountains.

In about 1840, photography was developed. Then photographers could take pictures of people and moving things. That was not simple. The photographers had to carry a lot of films and other machines. But this did not stop them; for example, some in the United States worked very hard. Mathew Brady was a famous American photographer. He took many pictures of great people. The pictures were unusual because they were very lifelike.

Photography had become one kind of art by the end of the 19th century. Some photos were not just copies of the real world. They showed feelings, like other kinds of art.

About ten men in every hundred suffer from color blindness in some way. W1． are luckier. Only about one in two hundred is affected in this matter. Perhaps, after all, it’s s2． to be driven by a lady.

There are different forms of color blindness. In some cases, a man cannot see deep red. He may think that red, orange and yellow are all shades of green. In rare cases, an unlucky man may see e3． in shades of green.

Color blindness in human beings is a strange thing to e4．. In a single eye, there are millions of very s5． things called “cones（视锥细胞）”. These help us to see in a bright light and to tell the difference between colors. There are also millions of rods（视杆细胞）but these are used for seeing when it is n6． dark. They show us shape but no color.

Some insects have favorite colors. Mosquitoes like blue but do not like yellow. A red light will not attract insects, but a blue lamp will. In a similar way, human beings also have favorite colors. Yet we are lucky. With the help of the cones in our eyes, we can see many beautiful colors by day, a7． with the help of the rods, we can see shapes at night. One day we may even learn more about invisible colors around.