Guangdong and Shanghai version eighth version 1.1 "Hope you like physics" ppt Scientists have done an experiment, blindfolded the eyes of the bat, it can still avoid flying freely. How does the bat rely on "navigation"? In June 1988, a strange sunrise scene appeared in the "Penglai Fairyland" in Shandong Province, China. In the early morning, the rising sun rises from the surface of the sea. A flat sun appears first, and then a sun appears above it. The two days overlap, and it is spectacular.
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