A few years back in the U.S., there was a huge wave of cicadas.



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送交者: Enlighten 于 2005-11-21, 14:50:53:

回答: “螳螂捕蝉”是说螳螂想捕蝉。 可人家17年蝉一直都躲在地下,螳螂老在地上等 由 Latino2 于 2005-11-21, 14:33:31:

I wonder if the cicadas in the U.S. were all coming here in the same year and therefore maintain the clear 17-year cycle?

And this means that most of the mantises have never seen one cicada in there previous 16 generations. How do they know cicadas are food not threat?



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