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以下是gre考试写作部分issue的优秀写作实例，通过这些优秀范文或是习作，考生可以借鉴里面的短语、句子或思路，给自己的写作找一些思路和灵感。 题目： No field of study can advance significantly unless outsiders bring their knowledge and experience to that field of study. 在任何一个研究领域当中，除非有该领域之外的人引进他们的知识和经验，否则该领域就很难获得巨大的发展。 正文： Nowadays quite lot fields of studies develop quickly due to the juxtaposition. Perhaps the produce of some significant advances in those fields attributes to the outsiders.However, this does not mean that outsiders knowledge and experience is the necessary condition for the prosperity of a subject study as the author asserts. Admittedly, borrowing knowledge and experience from other fields of study has indeed triggered significant breakthrough in many subjects. Quite a few scientific subjects like biochemistry, economics, astronomy, are undoubtedly the hybrids of subjects originally thought far distant from one another. Among these subjects, the changing of the astronomy is a successful example for applying the small amplifying tubes which used on chemistry to telescope inventing. As we all know, since that Copernicus raised the Copernican system, the astronomy develops slowly because of no useful equipment for seeing the sky. Then, a clever inventor used the amplifying tube which was a device for doing experiments to make out the telescope which was a changing point of the astronomy. Thanks to the cross field studying of that inventor,the progress of astronomy can be advanced so much for that today people have already embark on the moon. So, it is one of the wise ways to borrow the knowledge and experience from other fields when your own study is impeded. | 
