Birthdays are celebrated（庆祝）all over the world. Some ways to celebrate birthdays are rather similar from county to country: candles, cakes, and birthday wishes. But there are also different ways to celebrate birthdays. Here are a few:

    Many children go to the zoo on October 4 to see elephants, monkeys and tigers because that day is World Animal Day.

    Now, more children like animals and want to make friends with them. In the zoo, they learn about animal life. They don't need to go out to show their love of animals. They have pets(宠物)at home.

    Mark is a middle school student. He has a black cat. He gives it milk to drink and meat to eat. The cat is his true friend. Jane is also a middle school student. She has two tortoises. They are as big as her hand. Every day, she changes(换)the water for them. She likes to watch them.

    Earlier this year, China achieved a new milestone in space exploration. On Jan 3, Chang'e 4 became the first space probe in history to successfully land on the far side of the moon, People's Daily reported.
    From Earth, we can only see one side of the moon. The other side has been a mystery. Scientists have long wondered what lies on this side of the moon.

    Chang'e 4 has sent back photos of the far side of the moon. It is also being used to carry out experiments, such as growing seeds in a low-gravity environment. The data collected from these experiments could be used to help us build a base on the moon in the future.
    The success of the Chang'e 4 mission is a major achievement for China's space program. It marks a new stage in China's deep space exploration, said Wu Yanhua, deputy head of China National Space Administration.
    China launched its lunar exploration program in 2004, naming it Chang'e. Chinese scientists set three goals—"orbiting, landing and sample returning" – referring to launching probes that could circle around the moon, touch down on its surface and bring lunar materials back to Earth.
    Chang'e 4 has realized the second goal. The third will be achieved during the Chang'e 5 mission , which is set to take place before the end of this year, China Daily reported.
    Following the success of the Chang'e missions, Chinese scientists are looking even farther into our solar system. China's first Mars mission is expected to be carried out by 2020, Wu said.
    In addition to the first-ever soft landing on the far side of the moon, the Chang'e 4 mission has achieved many other firsts. One of them is international cooperation and joint exploration. The experiments will provide valuable data for the scientists.

    Welcome to Isle Royale National Park! It is a US national park in the state of Michigan.

    Isle Royale is surrounded by the deep blue waters of Lake Superior, the largest freshwater lake on Earth by area. No cars are permitted in Isle Roy ale. There are no real roads on the island. The only way to get to the park is by boat or sea plane. A boat trip to Isle Royale takes three to five hours. Isle Royale is the largest of the islands within the national park. It is over 72 kilometers long.

    The whole national park covers a total area of 2, 320 square kilometers, with 540 square kilometers above water. Isle Royale became a national park in 1940. But once they arrive, most visitors stay a white. The average stay for visitors in Isle Royale National Park is 3.5 days. Isle Royale offers hiking, camping, boating and even scuba diving.

    Visitors to Isle Royale can see a lot of mouse and wolves in winter. The national park is closed from November l through April 15, due to extreme weather conditions. But for the other months of the year, Isle Royale offers green forests and clear blue waters.

    How funny would it be to see memes(表情包) in our textbooks? Fourteen high school students from Sichuan Province have made this a reality.

    They wrote a set of creative textbooks that includes five subjects: Chinese, English, Maths, Chemistry and Physics. They share their notes and experiences to help you prepare for high school entrance exams. You can see funny memes almost everywhere in their textbooks. The language they use is not too serious.

    Each textbook has its own highlights(亮点), too. The English textbook introduces tongue twisters(绕口令), movies and TV series. The chemistry textbook has wuxia characters. There is a boy named Shangguan Huaxue(chemistry) in the book. He meets a girl and they learn chemistry together. It has ancient poems and wuxia-style descriptions.

    Yan Zuhuai, 15, a top student from Chengdu No.7 High School, is the textbooks' editor-in-chef. He got the idea to create the books in June. "Many underclassmen wanted me to share my notes with them. When I saw people sharing bikes, I thought, why not share knowledge as well?" Yan said.

    But when he put all of his notes together, he found that they were boring. Realizing that his classmates enjoy online novels and memes, he decided to add these things. He wrote guidelines and samples for each textbook and invited 13 students to join him in creating them.

    Their first drafts(草稿) came out in August. Students and teachers praised them. But Yan felt the books needed to be improve. In October, he and his team learned how to use the design software to improve the books. The final version(版本) will come out at the end of December. About 2,500 people have preordered them. Many publishing houses have shown great interest in them.