اختبار إلكتروني: Open training Dinasaurs

Read this following text and answer the questions (A) Scientists used to think that all dinosaurs had scaly skin, like lizards. Now scientists have found fossils of dinosaurs which had feathers. (B) Scientists used to think that dinosaurs had no living relatives. Now scientists think that over millions of years, small dinosaurs became birds. (C) Scientists used to think that there were no poisonous dinosaurs. Recently scientists discovered a dinosaur with teeth like a poisonous snake. (D) Scientists used to think that dinosaurs were cold-blooded, like snakes. Then they discovered that dinosaur bones were like the bones of other warm-blooded animals. (E) Scientists used to think that dinosaurs couldnot climb trees. Then scientists in China discovered small dinosaurs which used their claws to climb trees.