论文部分内容阅读
【文题展示】鹰是世界上寿命最长的鸟类,可以活到70岁。一只幼鹰出生不久就要经受母鹰近似残酷的训练。母鹰把幼鹰带到高处,然后把它们摔下去,有的幼鹰因胆怯而被母鹰活活摔死。母鹰“残忍”地折断幼鹰翅膀中的大部分骨骼,骨骼的再生能力很强,只要在被折断后仍能不停地振翅飞翔,使翅膀不断充血,不久便能痊愈,并且变得更加强健有力。如果不这样,它就永远与蓝天无缘。鹰在40岁时还要做出重要的
【Topic Exhibition】 Eagle is the longest life in the world of birds, you can live to 70 years old. A baby eagle soon after birth undergoes approximately brutal training. The female eagles took the young eagles high and then dropped them off, and some young eagles fell alive due to cowardice. Mother Hawk “cruel ” to break most of the young eagles in the bones of the skeleton, the regenerative ability of the skeleton is very strong, as long as after being broken can still keep its wings fly, so that the wings continue to congestion, and soon healed, and Become more robust. If not, it will never miss the sky. The eagle will have to make important at age 40