It provides evidence for people to imagine dinosaurs flying into the blue sky and the evolution of birds. This paper not only reveals the great discoveries made by scientists in paleontology research, but also opens a scientific door for students to explore paleontology and stimulates their strong interest in science. This article is included in the fourth grade Chinese lesson 3 1 read by Lu Yang.
The title of the text is "Dinosaurs Flying into the Blue Sky", which breaks people's inherent impression of dinosaurs and is quite attractive. At the beginning of the article, the heavy and dull dinosaurs and light and flexible birds that seem irrelevant to people's impressions are presented to readers in vivid language.
Tell us: In the Mesozoic era, a dinosaur finally became a bird soaring in the air after a long evolution, and then introduce the general process of this scientific discovery. Finally, the paper expresses scientists' good wishes: hope to find more and more sufficient evidence to reproduce the historical process of dinosaurs flying into the blue sky.
The third and fourth paragraphs of the text are the key paragraphs of the whole text. In the third paragraph, following the reader's reading ideas, the question "How did dinosaurs fly to the blue sky?" Naturally, it leads to the following, which leads our eyes to the Mesozoic era and reproduces the process of dinosaurs evolving into birds before our eyes.
In this process, the size, shape and walking mode of the first dinosaur 230 million years ago were described in chronological order. Then, tens of millions of years later, introduce the reproduction, change and different forms of their descendants; A carnivorous dinosaur finally became a favorite because of the change of its posture, body surface and living habits, and flew into the blue sky.