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高级课程
第09单元第05课时

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 1 T-Rex — Basic Story

Dinosaurs lived a long time ago before humans were around. Skeletons tell us what shape they were. Little is
known about their daily lives. Looking at what they ate helps us to know more about them.
Researchers have found teeth marks of one dinosaur on the bones of another dinosaur. A large dinosaur known
as Tyrannosaurus Rex, or T-Rex, made teeth marks on the bones of a smaller dinosaur. There were many marks
on the bones suggesting that the dinosaur kept chewing on the bones.
The bones of a T-Rex were found 65 million years after they all died and became extinct. People did not know
if it killed what it ate or only ate already killed animals.
Scientists found that the bite of a T-Rex was strong enough to kill another animal. This does not prove that he
tracked and killed his food himself. It does show that he could use his bite to kill other animals.

 2 dinosaurs

a type of animal no longer living

 3 extinction

all of one type of plant or animal have died

 4 humans

people

 5 researchers

people who examine and study things

 6 scientists

people who do research using science

 7 skeletons

bones

 8 tracked

followed

 9 Tyrannosaurus Rex

a large dinosaur

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