儿童在熟悉了“钢琴”、“二胡”和“手风琴”这类概念之后,再学习“乐器”的概念,这属于(  )。

儿童在熟悉了“钢琴”、“二胡”和“手风琴”这类概念之后,再学习“乐器”的概念,这属于(  )。A.下位学习 B.上位学习 C.组合学习 D.派生类属学习 E.相

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These are defensive behavior patterns which derive from our

These are defensive behavior patterns which derive from our fears. A.stem B.rel

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Younger people in America seldom complain of sleep disorders

Younger people in America seldom complain of sleep disorders. A.Right B.Wrong C.

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Many students today display a disturbing willingness to cho

Many students today display a disturbing willingness to choose institutions and

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