题目内容
人们在不同场合使用手机时需要选择不同的音量,改变音量是改变了声音的____;当你接听电话时,一般能够知道对方是熟人还是陌生人,这是根据声音的_____进行判断的.(填“音调”、“音色”或“响度”)略
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