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托福阅读100篇的文章内容，也是大家日常备考中，练习的重点内容，这些文章的练习，有助于大家更好的提高阅读水平。那么在具体的对于备考中，到底这部分的内容是什么，大家如何更好的练习这些内容呢?下面小编为大家整理了详细的内容，供大家参考!

老托福阅读100解析资料汇总

Perhaps one of the most dramatic andimportant changes that took place in the Mesozoic era occurred late in thatera, among the small organisms that populate the uppermost, sunlit portion ofthe oceans the plankton. The term "plankton" is a broad one,designating all of the small plants and animals that float about or weaklypropel themselves through the sea. In the late stages of the Mesozoic era,during the Cretaceous period, there was a great expansion of plankton thatprecipitated skeletons or shells composed of two types of mineral: silica andcalcium carbonate.

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