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      2. 蟬發(fā)音的秘密英語(yǔ)作文

        時(shí)間:2022-03-26 10:20:43 其他類英語(yǔ)作文 我要投稿

        蟬發(fā)音的秘密英語(yǔ)作文

          無(wú)論在學(xué)習(xí)、工作或是生活中,大家最不陌生的就是作文了吧,寫作文可以鍛煉我們的獨(dú)處習(xí)慣,讓自己的心靜下來(lái),思考自己未來(lái)的方向。一篇什么樣的作文才能稱之為優(yōu)秀作文呢?以下是小編收集整理的蟬發(fā)音的秘密英語(yǔ)作文,歡迎閱讀,希望大家能夠喜歡。

        蟬發(fā)音的秘密英語(yǔ)作文

          蟬為么會(huì)發(fā)音,對(duì)我來(lái)說(shuō)一直是個(gè)謎。為了揭開這個(gè)秘密,我常常躲在樹下悄悄地觀察。我發(fā)現(xiàn)蟬鳴時(shí),總是“挺胸”、“翹尾”。

          Why cicadas can pronounce has always been a mystery to me. In order to uncover the secret, I often hide under the tree and observe it quietly. I found that cicadas always "hold their chests up" and "raise their tails" when they chirp.

          這是為什么呢?一天,我捉到了一只蟬,進(jìn)行了觀察研究。我摘掉了蟬的翅膀,把它放在地上,它在地上撲打著小翅膀,叫著;我又折斷了它針狀式的嘴,可它仍然叫著。蟬究竟靠什么發(fā)音呢?經(jīng)過(guò)反復(fù)觀察,我發(fā)現(xiàn)這聲音好像是從胸部發(fā)出來(lái)的。于是,我把它捉起來(lái)看,發(fā)現(xiàn)它凹部的'兩側(cè),各有一片魚鱗似的硬殼,像鉗甲一樣,里面有一對(duì)透明薄膜。蟬嗚時(shí),簿膜地回動(dòng),我用手輕輕地一捍這個(gè)地方,蟬就叫了。我不停地捏,它就不停地叫。我想:這對(duì)簿膜就是它發(fā)音器吧!我把簿膜刺破,再怎么捏,它也不叫了。后來(lái)媽媽告訴我這是蟬的“響板”,是雄蟬特殊發(fā)音器。發(fā)音膜的肌肉收縮振動(dòng),蟬就會(huì)發(fā)出聲音。雌蟬沒有“響板”,所以是啞巴。

          Why is that? One day, I caught a cicada and made an observation. I took off the wings of the cicada and put it on the ground. It flapped its little wings on the ground and cried. I broke its needle like mouth again, but it still cried. What pronunciation does cicada depend on? After repeated observation, I found that the sound seemed to come from the chest. So I caught it up and saw that on both sides of its concave, there was a hard shell like a fish scale, like a pair of Tongjia, with a pair of transparent films inside. When the cicada whines, it moves in a thin film. I use my hand to gently shake this place, and the cicada calls. I kept pinching, and it kept barking. I think: this pair of film is its pronunciation device! I pricked the film. No matter how I pinched it, it wouldn't scream. Later, my mother told me that this is the "soundboard" of cicadas, a male cicada special pronunciation device. The muscles of the vocal membrane contract and vibrate, and cicadas make sounds. Female cicadas are mute because they don't have a soundboard.

          這時(shí),我才明白,蟬叫的時(shí)候,為什么總愛“挺胸”和“翹尾”了。揭開了蟬發(fā)音的秘密,我又一次嘗到了動(dòng)腦筋、學(xué)科學(xué)的甜頭。

          At this time, I can understand why cicadas always love "open chest" and "cocked tail". The secret of cicada's pronunciation has been revealed, and I have once again tasted the sweetness of using my brain and learning science.

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