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關于聲音的作文:聲音的傳播_800字
關于聲音的作文

        大家有沒有想過?人類平時說話交談時,聲音是怎么傳播的呢?記得在我11歲時,爺爺送給了我一個有趣的玩具,爺爺說它的名字叫“紙杯電話”?!凹埍娫挕本褪怯靡桓K子將兩個紙杯穿起來,然后就可以互相打電話了。這看上去是不是很神奇呢?  我仔細地打量這個“電話”。一根普通的繩子,    (共 805 字)     [閱讀本文] >>

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