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以冬眠为话题的英语作文

投稿:李翡翠 时间:1年前

在求学的道路上,写作文往往是一件令人头大的事,经常不知道怎么写,但必须清醒认识到:拥有好的文笔,绝对是受益一生的硬实力。而写作能力的提升,必须从小培养,对于这篇作文题目,建议多看《以冬眠为话题的英语作文》相关范文,多动笔练习《以冬眠为话题的英语作文》相关习作,相信功夫不负有心人。本文由作文汇用户投稿,希望为你的写作带来帮助,如果觉得这篇以冬眠为话题的英语作文1200字不错,记得推荐给同学哦~

导语:你知道的需要冬眠的动物有哪些?以下是小编为大家收集的一篇以冬眠为话题的英语作文。供大家参考阅读。希望喜欢。

  以冬眠为话题的英语作文

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.

Hibernating in this way, the animal can sleep all through the winter. You might wonder how it manages to live without eating for so many months. The answer lies in two facts. Thefirst is that it has stored supplies of fat in its body during the summer and autumn. The second is connected with the main use the body makes of food -- to supply the energy for movement. We have seen that hibernating animal reduces movement to far below the ordinary level. Even the movements of the heart and lungs are greatly reduced. The animal hardly makes any movement, hardly use any energy, and hardly needs any food.

Some animals, including some bears only half hibernate.That is to say, they sleep during the winter, but their sleep is not deep and their body temperature does not drop, as they are warm-blooded animals. In the antumn the bear eats and eats and becomes very fat. His hair grows longer. Soon he has a thick covering of fat and fur. In November he finds a place to lie down and goes to sleep. On warm winter days he may think spring has arrived; he gets up and walks around. When he sees that the snow is still thick on the ground, he quickly goes to sleep again.


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