一个人读书越多就会变得越聪明.
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Don't swim in the river.It's (危险的) for you.
The (人口) of China is about 1.41 billion in 2021.
Many people think computers and the Internet will (取代) books.
They'd like to go sightseeing (而不是) of staying at the hotel.
Chinese scientists (发送) a spaceship to the planet Mars to take photos in July 2020.