Heroes come in all shapes and sizes. Many heroes are not even human, such as dogs, horses and cats. They are so brave and helpful that human beings are proud of them, too. Lucca, a 12-year-old dog, is a great animal hero. She is a retired US Marine Corps dog. On April 5, 2016 she received the Dickin Medal from PDSA in London, England. And PDSA will provide free medical care for the sick and wounded animals in need. The Dickin Medal was founded in 1943 by Maria Dickin.

    The Medal is the highest prize for animals working in wars in the world.

    Lucca is the first U.S. Marine Corps dog to receive the medal. As a search dog, Lucca's work was dangerous. She was trained to find hidden weapons and explosive devices. According to the US Marine Corps, Lucca protected the lives of thousands of soldiers, and no soldiers were killed while she was going around. She completed over 400 dangerous pieces of work during six years in Iraq and Afghanistan. In 2012, she lost her front left leg in an explosion while working in Afghanistan.

    Lucca is the 66th animal to receive the Dickin Medal. 30 dogs (including Lucca) have got the Medal as well as 32 World War II messenger pigeons, three horses and one cat.

From Asia to America and everywhere in between, Swing—an energetic form of dance that includes six-step and eight-step rhythms(节奏) — has taken the world by storm. Making a recent comeback, swing dance floors have popped up all over the world. Many clubs make fans of Swing happy by holding nights when swing music is played, and sometimes even offering classes to attract customers.

Though Swing is now popular worldwide, it first appeared alongside the jazz movements of the 1920s and 1930s in New York City. While listening to jazz, the young black people of that time developed the movements of the Lindy Hop — a style of dance that is best known for a break away or 'swing out' move and sudden improvisation(即兴表演).

It was reportedly given this name when a reporter was interviewing a man at the dance hall who was watching other couples dance. When asked what that dance was called, the watcher looked at a newspaper next to him that had an article about Lindbergh— the first person to fly alone across the Atlantic(大西洋)—which was titled, 'Lindy Hops the Atlantic'. Then the watcher announced that the 'Lindy Hop' was the name of the dance, and it has stuck since then.

    In 1926, the Savoy Ballroom was the first large business to offer a place for people to listen to swing music and dance. With its huge dance floor, the Savoy became a big success overnight, attracting some of the best dancers and musicians in the New York area.

    Within ten years, the Lindy Hops was sweeping through the United States and became a symbol of unity, as young people of all racial(种族的) backgrounds crowded into dance halls to swing the night away. Traditional dance teachers did not welcome it because they thought it was not even a real dance and were quite sure about its demise but Swing has proved them wrong; it continues to be one of the world's most fun dances.

    My name is Tom. I'm a boy from England. I have healthy food every day.

    I often have bread and milk for breakfast at home. They are healthy. I love hamburgers, but I seldom(极少) eat them. They are not good for us. I eat my lunch at school. I eat rice with meat and vegetables. After it, I eat an apple. I like apples very much. For dinner, my mother cooks soup, fish and vegetables for us. I like vegetables because they can make me stay healthy.

    Before I go to bed, I drink a cup of milk. It's good for sleep(睡眠). I also drink lots of water in the day. It's very important for me. There are few calories(几乎没有卡路里) in water. So I'm not fat now.

    Do you know the astronaut Chen Dong? He and another astronaut Jing Haipeng stayed in space for more than 30 days from October to November in 2016. During the days, they, did some experiments in space. For example, they tried to plant vegetables there.

    Chen Dong was born in Henan Province in 1978. When he was a child, he wasn't a good student. When he was in Grade 3, he made the vegetables at school dirty for fun. The vegetables were a gift to the teachers from the school, He was very afraid after that. However, his teacher wasn't angry with him. "You have to think about others when you do such things," the teacher only said.

    After that, Chen became a good student. He later became the class monitor, In 1997, he joined the PLA Air Force(中国人民解放军空军). With a safe flight record of 1,500 hours as a pilot, Chen became a member of the Shenzhou-11 mission(任务) in June, 2016.

    Before flying to space, Chen told his twin sons, "Dad is going out. When you look up at the sky and see a shining star, I am probably there, and say hi to me."