Many scholars have commented on the difficulty in producing secondary source narratives from the raw data which makes up the past. Historian/philosopher Hayden White has written extensively on the rhetorical strategies by which historians construct narratives about the past, and what sorts of assumptions about time, history, and events are embedded in the very structure of the historical narrative. In any case, the question of the exact relation between historical facts and the content of written history has been a topic of discussion among historians since at least the nineteenth century, when much of the modern profession of history came into being.

　　As a general rule, modern historians prefer to go back to primary sources, if available, as well as seeking new ones, because primary sources, whether accurate or not, offer new input into

　　historical questions, and most modern history revolves around heavy use of archives for the purpose of finding useful primary sources. On the other hand, most undergraduate research projects are limited to secondary source material.

　　以上即是新gre作文备考素材的整理，每天积累一点点也符合大家的阅读量，所以备考新gre作文考试的考生一定要坚持，说话说授人以鱼不如授人以渔掌握了一定的素材再加不懈的练习，才可能在新gre考试的道路上立于不败之地!

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