1. (2019六上·龙岗期中) 完形填空

    I read a book1 dinosaurs(恐龙)yesterday. The book is very interesting. There are many pictures about dinosaurs. From the book, I know there were2different kinds of dinosaurs. Some dinosaurs were big and strong. They had sharp3. They liked4meat. Some dinosaurs had swings(翅膀). They could 5in the sky.

    There were many dinosaurs in the world long time ago. But now there are no dinosaurs. 6they all died? Do you know the reason(原因)?