【題目】隨著科學技術的不斷進步，一種新型鎖——“聲紋鎖”已經(jīng)面世，只要主人對著“聲紋鎖”說出事先設定的暗語，它就會自動打開，別人即使說出相同的暗語也打不開，這種“聲紋鎖”辨別聲音主要是依據(jù)（ ）

A．音色B．響度C．音調(diào) D．聲速

【答案】A

【解析】

試題分析：音色：發(fā)聲體的聲音品質(zhì)，由發(fā)聲體本身的特征決定．是區(qū)別聲音的重要標志．只要主人對著“聲紋鎖”說出事先設定的暗語，它就會自動打開，別人即使說出相同的暗語也打不開，是由于主人的音色與其他人的不同。

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