Dinosaurs
2012级（3）班[毕业]
阮敏念
2013-04-30 10:29
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英语作文
Dinosaurs are a class of animals which lived about 6500 million years ago ,and it can support the body upright , the control of global terrestrial ecosystems over 100 million years. Most dinosaurs have become extinct. but the descendants of dinosaurs - birds, survive and reproduce so far.