Who designed (设计) the first helicopter (直升机)? Who{#blank#}1{#/blank#} one of the most famous pictures in the world? Who knew more about the human body than most {#blank#}2{#/blank#}? There is an answer to all these questions——Leonardo da Vinci. You might {#blank#}3{#/blank#}what I said, but it is true.

    Leonardo was a great genius (天才). He didn't study at a(n){#blank#}4{#/blank#}. About 1,500 years ago, he lived in Italy. He had lots of {#blank#}5{#/blank#}. One of them was inventing (发明) things. One of his notebooks had drawings of a helicopter. Of course, he wasn't {#blank#}6{#/blank#}to build a helicopter with the things he had. But{#blank#}7{#/blank#}said his idea worked.

    Leonardo wasn't just an inventor. He enjoyed painting. He was one of the greatest {#blank#}8{#/blank#}of his day. When he was young, he was an excellent painter. As he {#blank#}9{#/blank#}he became more famous. Many of Leonardo's wonderful{#blank#}10{#/blank#}are still with us today, for example, the smiling woman the Mona Lisa.

    2019 is the Year of the Pig according to Chinese tradition. Do you know what pigs are really like? People sometimes say, "You are as stupid as a pig." But pigs are not stupid. They are {#blank#}1{#/blank#}one of the 10 smartest animals. They have a good memory and can tell different shapes apart. Many experts think pigs are{#blank#}2{#/blank#} to train than dogs or cats. In France, people teach pigs to find truffles(松露). With their good sense of smell, they can find truffles even faster than dogs. People in ancient China really liked pigs. People thought the pigs big head and ears were a symbol of {#blank#}3{#/blank#}. If someone had a round and chubby face, he or she was thought to be blessed(有福气的). People also believed the animal {#blank#}4{#/blank#}wealth. Piggy banks are a symbol of this. Most children have piggy banks that they can use to save money.

    People born in the Year of the Pig are said to be fun, patient and understanding. But some say they care for others too much and are willing to sacrifice their own {#blank#}5{#/blank#}. They also forget things quickly. Many famous people were born in the Year of the Pig, such as US writer Earnest Hemingway and Chinese athlete Liu Xiang. Pigs often {#blank#}6{#/blank#}in fairy tales, cartoons and movies. In the story the Three Little Pigs, a mother pig sends her three children to live on their own. Each of them builds a house with different {#blank#}7{#/blank#}. When the big bad wolf comes, each pig hides in his own house. Whose house will survive? Another popular pig is Mc Dull. He is a little pink pig who lives in Hong Kong. He is not bright, but he works hard. One of his simple wishes is to make his mother {#blank#}8{#/blank#}him. He also wants to go to the Maldives and have a turkey dinner for Christmas.

    Although Hilenburg wasn't sure whether people would like a cartoon about the ocean, he continued working on it. "At first, we just try to make ourselves laugh, then we ask if children will like it. " He didn't {#blank#}1{#/blank#} the innocent(天真无邪的)character would be such a success. It has won several Emmy Awards(文美奖)and has been shown in {#blank#}2{#/blank#} 60 languages.

    SpongeBob is popular because not only children but also adults like it. Children like SpongeBob's innocence. Teenagers and young adults love the show's {#blank#}3{#/blank#} , and others enjoy it for meme(表情包)culture.

    Above all, it is the character's innocence that attracts people.