A primary-school student does a physical experiment at Yunnan Provincial Science Museum in Kunming, capital of southwest China's Yunnan Province July 9, 2004. Many middle-school and primary-school students come to the museum in the summer vacation to learn more about the natural world.
Two primary-school students have a physical experiment at Yunnan Provincial Science Museum in Kunming, capital of southwest China's Yunnan Province July 9, 2004. Many middle-school and primary-school students come to the museum in the summer vacation to learn more about the natural world.
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