小學(xué)英語(yǔ)作文：Hibernation冬眠

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　　Hibernation is more than sleep. It is a very deep sleep.The animal's temperature drops to just over zero centigrade, and its heart beats very slowly.People who find hibernating animals asleep often think that they are dead: the body feels very cold, and the creature may breathe only once every five minutes.A hibernating animal cannot feel any pain.You can touch it, or even pull its tail, without causing it to move or wake up.In its hibernating state it can even live in a poisonous atmosphere for a long time without any ill effect.

　　冬眠不僅僅是睡眠，而是一種沉睡。動(dòng)物的體溫降到剛好在零攝氏度以上，心臟跳動(dòng)非常緩慢。人們看到處于冬眠狀態(tài)的動(dòng)物，常常以為它們是死的：身體摸上去冰涼，可能每5分鐘才呼吸一次。冬眠的動(dòng)物感覺不到任何疼痛。你可以摸它，拉它的尾巴，也不能使它動(dòng)一動(dòng)或醒過(guò)來(lái)。當(dāng)它處于冬眠狀態(tài)時(shí)，甚至可以長(zhǎng)時(shí)間地生活在有毒空氣中而無(wú)任何不良后果。

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