阅读理解。
If your mother wants to tell you something, she uses words. Birds cannot talk as we do. But some birds
can make sounds to warn their young of danger. They have their own way to make the young birds do certain
things.
The jackdaw is a kind of blackbirds that lives in Europe. Jackdaws live together in flocks (群). Young
jackdaws do not know their enemies. When an older jackdaw sees a dog, it makes a loud rattling (格格响的)
sound. The younger birds know this sound means an enemy is nearby. The sound warns them to know their
enemies.
If a young jackdaw is in a dangerous place, a jackdaw parent flies over him from behind. The parent bird
flies low over the young bird's back. The parent's tail feathers (羽毛) move quickly from side to side. It is
trying to say, "Follow me."
At the same time, the parent calls out, "Key-aw, key-aw." The parent means, "Fly home with me." The
young bird then follows the older home.
Young jackdaws do not have to learn what certain sounds mean. They know the meaning of these sounds
from the time they hatch.
1. The jackdaw lives in _____. [ ]
A. Europe
B. Australia
C. America
D. Africa
2. When an old jackdaw sees a dog, it _____. [ ]
A. calls out, "Follow me."
B. makes a loud sound
C. flies away
D. fights the dog
3. Which of the following does this story lead you to believe? [ ]
A. All animal parents can talk to their young.
B. Dogs are the most dangerous enemies for jackdaws.
C. Young jackdaws know the meaning of their parents' sound when they grow older.
D. Some birds can give certain information to one another.