听力原文

It's taken two hours for the little dragon to get its head out of the egg.
小鳄鱼需要耗费2个小时才能将脑袋伸出蛋壳。
It needs to gather its strength now for one final massive push. Free at last, the baby Chinese alligators instinctively head upwards toward the surface of the nest and waiting outside world.
现在是拼尽全力进行最后奋力一击的时刻。最终获得自由，扬子幼鳄出于本能的向巢的表面爬去，迎接全新的世界。
But the visitors are not what they seem. Sheshuzhen and her son live nearby.
但造访者并不是它们的同类。佘淑珍和她的儿子就住在附近。
She has been caring for her local alligators for over 20 years so she had a fair idea when the eggs will likely to hatch.
她已经照顾当地的扬子鳄20多年了，所以当这些蛋快要孵化的时候她有一个不错的主意。

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重点讲解

重点讲解：
1. need to do sth.
（为做成某事或正常生活）要求有，必须有，需要；
eg. A baby does not need to wear shoes until he starts to walk.
婴儿在开始走路前不需要穿鞋。
eg. I need you to do something for me.
我需要你为我做点儿什么。
2. at last
终于；最后；到底；
eg. He showed his sinister motive at last.
他终于露出了他那邪恶的用心。
eg. Mr. pearson won his suit at last.
最终皮尔逊先生赢得了他的诉讼。
3. care for
照料；照顾；护理；
eg. We all care for each other, love and help each other.
不过我们都互相关心、互相爱护、互相给予帮助。
eg. Kevin arrived right on cue to care for Harry.
凯文到的正是时候，可以照顾哈丽。