[英语作文至少60词]Wang Fang and her parents moved to Canada one years ago. She was afraid of makeing friends with her classmates. She was worried taht her classmates will laugh a...+阅读
今天,我在《西游记》这部电视中看到马是站着睡觉的。马是站着睡觉的?这个问题让我觉得很好奇:马不是躺着睡觉才舒服吗,站着睡觉那得多累啊!我决定要探个究竟。
带着我的疑问,我马上打开电脑,上寻找答案。原来马站着睡觉是继承了野马的生活习性。野马生活在一望无际的沙漠草原地区,在远古时期既是人类的狩猎对象,又是豺、狼等肉食动物的美味佳肴。它不像牛羊可以用角与敌害作斗争,唯一的办法,只能靠奔跑来逃避敌害。而豺、狼等食肉动物都是夜行的,它白天在隐蔽的灌木草丛或土岩洞穴中休息,夜间出来捕食。野马为了迅速而及时地逃避敌害,在夜间不敢高枕无忧地卧地而睡。即使在白天,它也只好站着打盹,保持高度警惕,以防不测。家马虽然不像野马那样会遇到天敌和人为的伤害,但它们是由野马驯化而来的,因此野马站着睡觉的习性,至今仍被保留了下来。哦,原来如此,怪不得马不像我们人一样躺着睡觉,我恍然大悟!
小朋友们,生活中处处是知识,只要我们细心发现,勇于探究,就一定能打开知识的宝库,获取更多的“宝藏”哦!
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