One afternoon, my son Adam asked me, "Are all people the same even though they are different in colour?"

    It was a serious question. I1for a while, and then said, "I'll explain it sooner. Let's go to a fruit shop. I have something interesting to show you."

 At the fruit shop, we bought some apples in different 2—red, green and yellow ones. After we got home, I told Adam, "It's time to 3your question now." I put one apple of each kind colour on the table. Adam 4them carefully. He had a 5look on his face.

    "People are like apples. They come in all different colors, shapes and sizes. On the 6, some of the apples may not even look as delicious as7." While I was talking, Adam was8each one carefully. Then, I took each of the apples and peeled(削皮) them, placing them back on the9, but in a different place.

    "Okay, Adam, tell me which is which."

    He said, "I10tell. They all look the same now."

    "Take a11of each one. See if that helps you decide12one is which."

    He took big bites, and then a huge smile came across his face. "People are13like apples! They are all different, but once you take off the outside, they're pretty much the14on the inside."

    He totally15it. I didn't need to say or do anything else.

    I like Saturday and Sunday because I don't have to go to school. 1do my mum and dad. On Saturday and Sunday I do not need to get up 2. Then I eat a light breakfast at about 8: 30. I always finish my homework on Saturday morning. In the afternoon, I do some housework. I also clean my own room and wash my own clothes. I think doing some houseworkis 3. In the evening, my family usually watch TV together and we talk a lot about the TV programmes. On Sunday, my parents and I go to see my grandparents. We go there by bike. It's a kind of good 4. Sometimes we go to the cinema or parties, 5we have a wonderful time at weekends.

Long long ago, there was a swan（天鹅）with golden feathers. She lived in a lake. A woman lived in a small house 1 the lake with her two daughters. They were very poor. They worked hard all year round, 2 still, they lived a hard life and sometimes they even didn't have enough 3 to buy food.

The swan was 4 to see that. She said to herself, "I'll give one of my 5 to them each day, then they can live a happy life with the money selling my feathers." That evening, she 6 to the poor woman's house and left a golden feather on the table without saying 7 .From then on, the swam came every day and gave them a feather. The woman was very happy because their life was much 8 than before.

But day after day, the woman became greedy（贪婪）.She said to her 9 "The swan may fly away one day. If so, we will be poor again. We should take all 10 feathers if she comes next time."

"Oh, no, Mom!" cried the daughters, "This will 11 the swan. She helps us a lot !"But the mother wouldn't listen. When the 12 came as usual, the mother caught her and took all her feathers. But suddenly, the golden feathers 13 chicken feathers.

Then, the Golden Swan said, "Poor Mother, I came to 14 you, but you wanted to kill me. Now, I am leaving and will 15 come back. Never be greedy!" With these words, the swan left.

 Guo Guangpu, a university professor, can be a bit odd outside the classroom, especially when he is seen sniffing(闻) bird droppings, or even pretending to eat them for dramatic effect.

 This dramatic way of teaching has proved to be effective. To date, Guo has made more than  100 short science videos about animals and plants, as well as eco logy systems. People can find information on a wide range of interesting natural phenomena(现象) in Guo's educational videos on the popular short video- sharing platform Douyin.

 His followers have watched his trips to learn about unusual knowledge. For example, they can see lychee in Dongguan of Guangdong province, Asiatic toad (蟾蜍) in Zhejiang province, and weird fruits of various shapes and sizes in Yunnan province.

" Science videos are not easy to make. You have to be professional as well as lively and interesting. Only in this way can people with different levels of knowledge understand," Guo says. Therefore, he needs to look up plenty of information to make sure that there are no mistakes in his videos. While presenting the knowledge, he also tries his best to deliver the information in plain words.

 As a result, his efforts have attracted more than 14,000 followers since March. Some of his videos have received as many as 17,000 likes.

" With the help of Professor Guo,I am able to appreciate the beautiful land across the country even without leaving home," says Ren Jiaxi, one of Guo's Douyi n followers." His video encourages my interest in learning," Ren adds.