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互联网三级分层模型中的核心层的实现通常是高速wan、atm、t1/e1或帧中继。()

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幼儿班集体不具有独特的心理调节功能。()

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对脑力劳动进行工作分析时，很适宜采用观察法。()

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The neuroimaging studies show that shyness is______.

A. a kind of disability due to differences on the brain
B. something that only emerges in a child in infancy
C. something that stays with the person for all his or her life
D. not a learned behaviour—it is innate

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菲德勒认为一个人的领导风格是稳定不变的。()

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