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Hidden among the X’s are five Y’s. Can you spot them within 5 seconds? If you can, you have an exceptionally sharp brain with equally sharp eyes. Studies suggest that puzzles like this ...

综述 在我们脚下的地球，是一个生机勃勃且不断变化的星球。它的表面由数块巨大的岩石板块组成，这些板块在缓慢但不停息地移动着，重塑着地球的面貌。