Critical Period

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Oct 8, 2016 01:19
We animals,spend the point called critical period.The proffessor in my university taught me that.Animal spend the period without doing something,afterwords we can't do it though we practice very well.For example,the bird which blinded since it was born can't fly the sky though its blinder is taken off.That reason why is the bird spent the critical period when it put on blinker.
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