题目内容

Choose the best words or expressions and complete the passage

Number sense is not the ability to count. It is the ability to recognize a change in number. Human beings are born with this ability. ______________, experiments show that many animals are, too. For example, many birds have good number sense. If a nest (巢) has four eggs and you remove one, the bird will notice. However, if you remove two, the bird generally leaves. This means that the bird ______________the difference between two and three.

Another interesting experiment showed a bird's______________number sense. A man was trying to take a photo of a crow (乌鸦) that had a nest in a tower, but the crow always left when she saw him coming. The bird did not______________ until the man left the tower. The man had an idea. He took another man with him to the tower. One man left and the other stayed, but they weren't successful in fooling the bird. The crow stayed away until the second man left, too. The experiment was_______________with three men and then with four men. It was not until five men went into the tower and only four left that they finally managed to take a photo.

How good is a human's number sense? It's not very good. For example, babies about fourteen months old______________ notice if something is taken away from a small group. But when the number goes beyond three or four, the children are often very confused.

It seems that number sense is something we have in common with many animals in this world, and that our human ability is not much better than a crow's.

1.A.Importantly B.Surprisingly C.Disappointedly D.Fortunately

2.A.went out B.found out C.looked out D.turned out

3.A.forgetful B.friendly C.amazing D.silly

4.A.escape B.return C.fly D.sing

5.A.noticed B.mentioned C.repeated D.produced

6.A.never B.rarely C.properly D.usually

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When I was a small boy, something happened to me that made me never put any wild creature in a cage.

We lived near a forest, and every evening the mockingbird would come and______. I decided to catch a young______and keep it in a cage, and in this way, I would have my own private musician. Then I succeeded in catching one and put it in a cage. At first, the bird was______, so it fluttered (扑腾) in the cage. But finally it was used to living in its new home. I felt very excited with myself and look forward to some beautiful singing.

On the second day, the little bird’s mother flew to the cage with______in her mouth. The baby bird ate everything. I was______to see this. Certainly the mother bird knew how to feed her baby better than I did.

The following morning when I went to see my bird, I found it______on the floor of the cage. I was terribly surprised and sad! What had happened?

Arthur Wayne, a famous biologist, happened to______my father at that time. After she knew my story, she explained to me, “A mother mockingbird, finding her young in a cage, will sometimes bring it poison berries. She thinks it better for her baby to die than to lose______.”

Since then I have never caught any living creature and put it in a cage. All living things have a right to live free.

1.A.dance B.fly C.sing D.jump

2.A.bird B.boy C.fish D.thief

3.A.happy B.careful C.active D.afraid

4.A.water B.food C.songs D.stones

5.A.worried B.pleased C.bored D.tired

6.A.alone B.alive C.dead D.sick

7.A.invite B.visit C.challenge D.introduce

8.A.friends B.parents C.freedom D.happiness

Once upon a time, a proud swallow lived in a large tree. He liked his colorful feathers and his long tail so much that he believed nothing could be better than them. One day, he saw a crow and thought, “How silly this bird is! All his feathers are black.” He looked at himself lovingly and enjoyed his own feathers.

Just then, the crow flew and sat on the same branch(树枝) as the swallow. The swallow said, “All your feathers are black and your tail is so short.” The crow smiled and said, “But they help me fly.” The swallow said, “So do mine. But look at how beautiful they are!” He spread his wings and flew a little closer to the crow. The crow saw that the swallow had lots of blue feathers and some white and pink ones, too. He looked at his own feathers and thought, “It’s true. The swallow’s feathers are much prettier than mine.”

The crow said, “Swallow, you’re right. You have lovely feathers and a long tail, but only in summer. Your little feathers cannot keep you warm in winter at all. While you shiver in the cold, my thick feathers keep me warm in the cold winters.”

1.When the swallow said the crow’s feathers and tail weren’t beautiful, the crow _______.

A.became angry B.smiled and explained

C.flew away quickly D.became worried and sad

2.The underlined word “shiver” means “_______” in the passage.

A.shake B.lose C.fall D.turn

3.What does the story want to tell us?

A.Birds of a feather flock(聚集) together.

B.Don’t be proud of something that’s of little use.

C.Find out our own problems and solve them quickly.

D.Don’t make friends with people who are too proud.

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