文档介绍：dinosaur
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Hello,everybody, Iˊm very glad to stand here to talk something with you ,then today Iˊd like to share my topic about dinosaurs……
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2020/3/8
dinosaur
As you can see,the dinosaurs introuduced now is real dinosaurs ,not like this……O__O”…
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2020/3/8
What is a Dinosaur?
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.
恐龙是生活在距今大约6500万年前的、能支撑身体直立行走的的一类动物，支配全球陆地生态系统超过1亿年。大部分恐龙已经灭绝，但是恐龙的后代——鸟类存活下来，并繁衍至今。
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2020/3/8
As is known to us all,there are varieties of dinosaurs long long ago such as Carnivorous dinosaur, Stegosaurus and so on.
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2020/3/8
These dinosaurs walked on two feet. They had thick, dome-shaped skulls. Scientists think they may have used their thick heads to butt other dinosaurs
肿头龙是用两条腿走路的，它们有很细的，圆顶形的头骨，科学家认为它们有可能是用它们细小的头部去顶撞其他恐龙的。
PACHYCEPHALOSAURS
肿头龙
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2020/3/8
STEGOSAURS
剑龙
These ornithischians walked on four legs and had a row of bony plates down their back. Stegosaurus, a large stegosaur, also had spikes on its tail. It used its spiked tail for fighting off meat-eating theropods. Stegosaurus was about 30 feet (9 meters) long.
这些鸟臀目恐龙用它的四条腿走路，而且它们的背上有一排骨板，剑龙，大的剑龙，在它的尾巴上有那种板钉状的东西，它经常用它那带有板钉的尾巴去和兽脚亚目食肉恐龙战斗，剑龙是大约30英尺（9米）长。
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2020/3/8
Oviraptor
偷蛋龙
The oviraptorids are a theropod group in which the skull and mandible are highly are characterized by a short snout,the absence of teeth,a tall mandible,a long pa-rietal,an enlarged tooth-like process on the palate,and a large,anteriorly located external man-dibular fenestra
偷蛋龙是一种兽脚亚目食肉恐龙，它的头部和下颚骨都是改进过的，偷蛋龙的特点就是有很短的吻部，缺损的牙齿，壮实的下颚骨，还有一个长长的顶和一个扩充的像牙齿一样的东西，一个大的，前面的位于下颌外部的孔
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2020/3/8
The extinction of dinosaurs
Thought dinosaurs once were the overlord of the word ,they died out