How do you study each day? You may answer it in one second: by having classes at school, taking notes and doing homework. Feeling a little bored? There are other ways that can make learning interesting and varied. It's called digital learning.

    Digital learning is a way to help students learn by using the Internet There are three important kinds of digital learning. Apps are computer software applications(应用). People can download them on their mobiles. The other two kinds are social networking services, including Weibo and Wechat and websites. Every one of them is like your teacher. They help you master what you learn at school.

    Compared with traditional learning ways, digital learning has its advantages. Digital learning is varied. It covers almost every school subject. More importantly, it always offers students the newest resources(资源) to earn from.

    Digital learning is also personalized. You can choose what you like to learn. If you don't master what you have learned at school, you can learn again through digital ways.

    However, digital learning also has disadvantages. When you use digital ways to learn, you've got little chance of talking with teachers and classmates. As digital learning uses computers or smartphones, watching the screen too long may be bad for your eyes. It is better to take a rest every 20 minutes

    You must be told many times about the four historical stories. However, have you learned anything different about them in history classes?

    George Washington lost his first adult tooth at the age of 22. When he became the first American president, he only had one real tooth left. All his other teeth were made of wood.

    Everyone knows that in 1492, Christopher Columbus sailed from Spain to prove (证明) that the Earth was round. However, the truth is that Columbus didn't think the world was round at first

    Many of us believe that Isaac Newton was hit on the head by an apple and he had the idea about gravity. In fact, he was never hit on the head by an apple. The story didn't appear until the year Newton died. Newton's story is interesting, but it isn't true.

    Besides being one of the greatest people in history, Napoleon Bonaparte is remembered as a tiny man. And thanks to a famous painting by Louis David, people think he always had his hands hidden in his coat. But in fact his height was about 1.7 metres. It is very normal even at present.

    Of course, sometimes it's difficult to tell whether some historical stories are true or not. However, most of them can bring us much fun and teach us a lot.

—It's _______ 200 km per hour.