人类为什么能够区别左右?奥秘在于人类的左右大脑是不对称的!动物的大脑是对称的.因而动物不能区分左右。这一设想最初由奥地利

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This company is the major manufacturer of (  )air-conditione

This company is the major manufacturer of (  )air-conditioners in Europe.A.homew

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