2.2我们怎样区分声音一、判断题：1、只要物体发生振动，都可以使人听到声音．（）2、一切气体、液体、固体物质都能传播声音.（）3、因为一...
我们怎样区分声音（沪科粤教版§2.2内容）一、判断题：1、判断正误：只要物体发生振动，都可以使人听到声音．（）2、判断正误：一切气体、...
我们怎样区分声音课堂练习1．什么是音调？音调的高低与什么有关？2．物体振动的快慢用什么表示？单位是什么？3．在学习吉他演奏的过程中，...
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THEARCHERGIRLTHEARCHERGIRLTHEARCHERGIRLTHEARCHERGIRL_______PaulaliveinIreland?_______PaulaliveinIreland?DoesDoes1/12_______sheusua...
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幼儿园小班数学活动区分左和右幼儿园小班数学活动：区分左和右设计意图：有一天，班上有个小朋友跑来问我：“老师，我转个身，为什么右边改...
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