Millions and millions of years ago,the world was much warmer than it is now.There was never winter or snow.Warm rain fel

Millions and millions of years ago,the world was much warmer than it is now.There was never winter or snow.Warm rain fell on the land.Even the sea was warm.In this warm world lived strange animals called dinosaurs.They were the kings of the world for a long time.
In the days of the dinosaurs,there were not men.So no man has ever seen a living dinosaur,But we found their bones and after years of study ,a lot about the dinosaurs have been learned.
Some dinosaurs lived near the water while some lived on dry land.Some ate only plants and some ate other animals.
Many dinosaurs were very large,but some of them were as small as chickens.
After millions of years,something happened to the dinosaurs.They began to die out(绝种)at once.No one knows what happened.But we know that the world grew a little colder.Maybe the dinosaurs could live only when it was very warm,and they died out when it became colder.But we are not sure.All we know is that the dinosaurs were the kings of the world for a long time.And no animals like them have ever been seen again.
( )1.Some dinosaurs were like because they_______________.
A.ate grass and plants B.ate other animals
C.lived in the water
( )2.How did people find out that some dinosaurs were very large?
A.Because some people have ever seen some dinosaurs.
B.Because the weather was very warm when dinosaurs lived.
C.Because they found bones of dinosaurs.
( )3.Dinosaurs died out because________________.
A.it became too cold for them
B.of some reasons we are not sure about
C.they ate up all the grass and plants.
( )4.Why do we call dinosaurs kings of the world
A.Because they ate grass and plants.
B.Because they ate up all the other animals .
C.Because they were very large and they were the main animals on the earth at that time.
( )5.According to the story which of the following is NOT true
A.Dinosaurs liked warm weather.
B.Some dinosaurs were large while others were small.
C.Dinosaurs appeared(出现)after human beings.