柚子

Have you watched the film Jurassic Park（侏羅紀(jì)公園）？ Its a series of movies about dinosaurs. From these movies， we know many kinds of dinosaurs. Some were huge and some were small. Some dinosaurs shrank（縮?。?in size and evolved（進(jìn)化） into birds. Most dinosaurs laid eggs.

Are all the shells of dinosaur eggs hard？ Thats not right. Some experts think that maybe all dinosaurs laid soft-shelled eggs（軟殼蛋） at first， then they evolved and laid hard-shelled eggs（硬殼蛋）.

Odd Acts奇怪的行為

Dinosaurs have odd acts of obsession（強(qiáng)迫）.Some dinosaurs liked to pile up（堆起來）their eggs， and put them in order.

恐龍有一些奇怪的行為，就像有“強(qiáng)迫癥”。一些恐龍會把許多圓溜溜的蛋堆成一堆，把這些恐龍蛋整齊地堆放在一起。

Some animals aren t dinosaurs有些動物并不是恐龍

Pterosaurs（翼龍）can fly in the sky. Mosasaurs（滄龍）can swim in the sea. But they are not dinosaurs. Dinosaurs are land animals. However， pterosaurs are flying reptiles（會飛的爬行動物）. Mosasaurs are marine animals（海洋動物）.

有一些我們熟知的古生物其實并不屬于恐龍。比如，天上飛的翼龍、海里游的滄龍，可都不是恐龍哦。因為所有的恐龍都是陸地動物，而翼龍只是會飛的爬行動物，滄龍是海洋動物。

Oviraptors dont steal eggs竊蛋龍其實不偷蛋

When the oviraptor（竊蛋龍） was first found， it was near a pile of eggs. Scientists thought these are the eggs of protoceratops（原角龍） and the oviraptor was stealing eggs. Actually， the eggs were her own eggs and she was hatching（孵蛋） eggs.

最初被人們發(fā)現(xiàn)時，竊蛋龍正在一堆蛋旁邊。當(dāng)時的科學(xué)家認(rèn)為那些是原角龍的蛋，而竊蛋龍正在“偷蛋”。事實上，竊蛋龍身下的蛋就是自己的蛋，人家明明是在認(rèn)真地孵蛋呢！