What was the Earth like 200 million years ago?The weather was warm and there was plenty of rain.Tall trees,thick bushes,and twisting（缠绕的） vines（藤） grew.In these jungles（丛林）,important creatures appeared.Maybe you\’ ve heard of them.We call them dinosaurs.
For about 150 million years dinosaurs ruled the Earth.Some of these four-legged animals were 17 meters tall.They could eat the leaves off the top of a tree.The heaviest dinosaurs weighed as much as twenty elephants.Others,however,were no bigger than chickens.No one has ever seen a living dinosaurs.So how do we know they existed （存在） ?The answer is fossils.
Fossils are dinosaur bones that we find in the ground.These fossils can show us what dinosaurs looked like.A dinosaur skull（头骨） tells us what their head looked like.To see what shape their bodies were,scientists put their bones back together.
Dinosaur footprints and teeth were also preserved in the mud they walked in.Footprints can show us how they moved and ran.Their teeth tell us about what they ate.So what happened to all of the dinosaurs?How did they disappear?Many people think the dinosaurs all died when the Earth\’s climate changed.The planet became colder and dinosaurs couldn\’t keep alive.Today they may die out ,but movies,television and museums are keeping dinosaurs alive in our minds.

（1）Some dinosaurs were so tall that they could ______.
A.eat as much as twenty elephants
B.ruled the Earth for about 200 million years
C.walked in the mud
D.eat leaves off the top of a tree
（2）The underlined word"preserved"in Paragraph 4 probably means ______.
A.saved
B.disappeared
C.appeared
D.recorded
（3）What is the story mainly about? ______
A.The jungles 200 million years ago
B.The fossils which show us what dinosaurs looked like
C.Dinosaurs who ruled the Earth for about 150 million years
D.The reason why dinosaurs die out
（4）Where can we probably read the text? ______
A.In a story book.
B.In a travel guide.
C.In a diary.
D.In a science magazine