I also played a famous hall.

When I was young, when I went out to play at the beach, I found out why the sea can float people on it. I suddenly had a problem in my mind. I took this question in my heart and looked up the information. I realized that the buoyancy of sea water is very large, so people can float up. I did not expect that I can play a famous name! Teacher comment: The teacher really admire you, play can also play famous, play knowledge. In fact, there are many places that you deserve to learn. For example, you can observe carefully during play, find problems during play, and solve problems with your own initiative to learn more. In the article, you know that "the buoyancy of sea water is very large, so people can float up." Some children read your article and don't understand why sea water is buoyant? Therefore, when introducing scientific knowledge, it must be clear and specific. 2007-12-20 21:49:00

I also played a famous hall.

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