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Huongsu2001
2 năm trước
___________owe much of their success as a group to their unusual powers of migration.
 
A.That birds   
B.A bird    
C.The bird
D.Birds
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Read the passage carefully, then choose the best answer for each question.
THE MAMMOTH’S TALE
Imagine finding a body that had been lost for 40,000 years . . .
The strange animal in the ice looked like it was sleeping. Ten-year-old Kostia Khudi and his brother had never seen anything like it before. But they had heard stories of the mamont. It was an imaginary animal that lived in the ice-filled blackness of the Siberian underworld.  Their father, a reindeer herder  named Yuri Khudi, went to ask a friend for advice.  But when he returned, the body had vanished.
Yuri soon found the animal's body leaning against a store in a nearby town. While he was away, his cousin had sold it to the store owner. Dogs had eaten part of the tail and ear, but it was still in "as close to perfect condition as you can imagine," says scientist Daniel Fisher. The police came to help. The body was taken by helicopter to a museum.  The animal was a baby mammoth from the Ice Age. It was female, so the scientists named it after Yuri's wife.
From Siberia, the mammoth was sent to the Netherlands and Japan. Scientists there studied it more closely. Detailed studies of her teeth and tusks showed she was just one month old when she died. Ongoing research has also shown us the sequence of events that led to her death. Lyuba fell and died near a muddy river. The mud helped keep her body frozen until she was found, 40,000 years later. Scientists hope that further studies will help explain how mammoths, like Lyuba lived. They also want to know why mammoths became extinct.
The passage is mainly about_____.
A.animals that are now extinct
B.an important discovery
C.what life was like for a mammoth named Lyuba
D.life in the Ice Age

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