Now please tell me what they do ?
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    A group of swans flew down to a beach where a crow(乌鸦)was jumping around. The crow watched them with disdain(鄙视).

    "You have no flying skills at all!” he said to the swans. “All you can do is to move your wings. Can you turn over in the air? No, that's what you can't do. Let's have a flying competition. I'll show you what real flying is ! "

    One of the swans, a strong young male, took up the challenge(挑战). The crow flew up and began to show off his skills. He flew in circles, did other flying tricks, and then came down and looked proudly at the swan.

    Now it was the swan's turn. He flew up, and began flying over the sea. The crow flew after him, making all kinds of comments(评价)about his flying. They flew on and on until they couldn't see the land and there was nothing but water on all sides. The crow was making fewer and fewer comments. He was now so tired that he found it hard to stay in the air, and had to try to stop himself from falling into the water.

    The swan pretended(假装) not to notice and said, "Why do you keep touching the water, brother? Is that another trick?"

    "No," said the crow. He knew he had lost the competition. "I'm in trouble because of my pride! If you don't help me, I'll lose my life... "

    The swan took pity on him, and took him on his back and flew back to the beach.

C

Liang Xianghua, a 22-year-old girl from Guangxi University, has been well-known in China for her sand painting since her first work was used by CCTV.     "Sand paintings really attracted me while I was watching a video performance, I was surprised by how this artwork melted people's heart in minutes" said Liang. "I fell in love with the way the sand pictures, music and the light combined（融合）with each other to make a flow of emotion（情感）. You can express things freely."

In order to master the skills, Liang practised for several hours every day. She said that she couldn't even do the first step well of throwing sand onto the glass. But she didn't give up.     After finding success with her first show, she was invited to do many performances. This made her quite tired. She decided to give a stop and focus on her study. But an invitation from Malaysia changed her mind just as she was about to wash the sand from her hands. This spring, she was invited by a Malaysia middle school to give a performance. Liang didn't want to do a live show, but agreed to do a video for the school, showing its development over the years.     She received praise for her work and the performance was described as an eye-opener for the students. This made her wonder if her art would be more meaningful if she made it for the poor students.     As a volunteer this time, she plans to take part in a summer programme offering help to pupils in a mountain area, and give the most wonderful show in her life.

    Chuck was not an ordinary frog. He did love eating flies, but he didn't like catching flies himself. He didn't like snapping them from the air while they were flying around. Some frogs thought Chuck was lazy. Others thought he was strange.

    That didn't matter to Chuck. Each morning, Chuck hid himself under the spider's web between the cattails. Then when Lady Eightlegs went off, Chuck ate flies from her web.

    One morning while Chuck was enjoying the flies, Lady Eightlegs returned and caught him. She cried, "Go and catch your own". Chuck jumped back into the pond.

    Now there was an idea! Why not make his own web? Chuck got some vines. He put them together until they looked like a spider web. He worked on his web for hours until mid-night. And then he fell asleep. When he woke up the next morning, he was stuck inside and couldn't move.

    "Help!" he yelled.

    Lady Eightlegs got there and saved him.

    "No matter how hard I try,I can't spin a spider's web," Chuck said.

    " Of course not," Lady Eightlegs said. "You're a frog. Frogs can't spin spider's webs any better than spiders can swim, I guess. How I wish to swim in the middle of the pond and float (漂浮) peacefully under the sun like you!"

    Chuck smiled, "I have an idea."

    From that day on, Chuck carried Lady Eightlegs out to the middle of the pond, where they floated and played together. When they returned to shore, they shared a breakfast of flies. It wasn't exactly an ordinary friendship.

    You may have heard of people who are allergic（过敏）to seafood, smoke or pets. But did you know that some people were allergic to Wi-Fi signals(信号)?

    Rose White, a 44-year-old woman from Britain, first found herself being allergic to Wi-Fi signals in 2015.She had a cough, heart trouble and great pains in her head when she stayed at the places covered with Wi-Fi signals.

    Rose has tried many ways to keep away from Wi-Fi signals. In the past six months, she either slept in her car or in tent which she had put up in the woodland and in the fields. She even tried sleeping in a shed(棚子). Being completely tired, Rose had no choice but to quit her job and moved 370 kilometers away from her home to avoid Wi-Fi signals, but failed. Because of the hard life, she got a stomach problem.

    She is now living in a small house in the rural(乡下的) area in England. There are far fewer Wi-Fi signals. However, the house, which belongs to her friend, will be sold to others, so she has to move again soon.

    Rose is planning to move to a more rural area. She is also planning to buy a camper van(野营车) so that she can drive away from Wi-Fi signals whenever she is feeling uncomfortable. As she can not work to make money, she has to raise money online. She is hoping to raise 15,000 pounds. So far, she has raised over 1,600 pounds. She still has a long way to go.