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問答題
樂隊(duì)的小號吹響5，這是______振動(dòng)發(fā)出的聲音，按下不同的鍵，可以使其發(fā)出不同的聲音，這主要是改變5聲音的____樂隊(duì)的小號吹響5，這是______振動(dòng)發(fā)出的聲音，按下不同的鍵，可以使其發(fā)出不同的聲音，這主要是改變5聲音的______．演奏同一樂曲時(shí)，人能分辨出的胡和小提琴發(fā)出的聲音，主要是因?yàn)樗鼈兊腳_____不同．
答案：
樂隊(duì)的小號吹響5，這是空氣柱振動(dòng)發(fā)出的聲音，按下不同的鍵，可以使其發(fā)出不同的聲音，這主要是改變聲音的音調(diào)。演奏同一樂曲時(shí)，人能分辨出的胡和小提琴發(fā)出的聲音，主要是因?yàn)樗鼈兊囊羯煌?/span>
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問答題
Do you see the man over there. He is sitting at the assemb ly line and packing toys. He is our director. The man is our diractor.
答案：
The sentence "He is our director." is repeated twice with a typo in the first instance. The correct sentence should be "He is our director." The word "assemb ly" is misspelled and should be "assembly." The correct and polished version of the sentence would be:
"Do you see the man over there? He is sitting at the assembly line and packing toys. He is our director."
