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题型:阅读理解-单选 难度:0.65 引用次数:78 题号:22065351

One January morning. Thomas Smith is walking his dog, Jack, in the park. Mr. Smith is sitting under a tree and Jack is running on the ice (冰), the dog falls into (掉进) the water and can’t get out.

“I must save my dog.” says Mr. Smith. He doesn’t think much, and jumps into the cold water. It’s difficult for him to swim in the cold water, but he is just thinking about saving Jack.

Luckily, he helps Jack out of the water. And they are safe now. “When we get out of the water, every body asks how Jack is, and nobody is worried about me!” Mr. Smith says with a smile. Julie Brown sees this thing, too. “The dog gets onto the ice lake,” she says. “Suddenly, it starts to go under. Many people see it and they are shouting for help. But only Mr. Smith jumps into the cold water to save it.”

People think Mr. Smith is a hero (英雄). “In fact, many people in the world are doing the same as me,” Mr. Smith says. “But from now on, I must let Jack be away from the ice lake.”

Animals are our great friends. Can you do the same for them like Mr. Smith?

1. What’s Mr. Smith doing while the dog is running on the ice lake?
A.He is taking a walk in the park.B.He is sitting under a tree.
C.He is talking with someone.D.He is playing with another dog.
2. Why does only Mr. Smith jump into the cold water to save Jack?
A.Because he is good at swimming.B.Because he loves his dog very much.
C.Because other people don’t like the dog.D.Because no one sees the dog fall into the lake.
3. Which of the following is TRUE?
A.Mr. Smith feels angry because no one is worried about him.
B.Mr. Smith lets Jack get onto the ice and it falls into the water.
C.Mr. Smith won’t let Jack play on the ice lake next time.
D.Julie Brown doesn’t think it’s necessary (必要的) for Mr. Smith to do so.
4. What does the writer mainly want to tell us?
A.To be good with animals.B.To help people in danger.
C.To stay away from the ice lake.D.To learn to swim in the lake.

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【推荐1】A thirsty crow(乌鸦) comes across(偶然遇到) a bottle of water, but the water level is out of its reach. The bird then drops some stones into it and gets the water.

“It’s just a story,” you may think. But new research has found that crows’ brains may sometimes be better than those of 6-year-old children.

In a recent experiment, American scientist Corina Logan and her team caught six crows to test them. The crows and children had to choose between two sets of tubes(试管). They had to drop stones in and get water.

With the red set, when they dropped a stone into a wide tube, the water level raised in a connected narrow tube. The blue set of tubes, however, had no connection between them.

Children aged 7 to 10 were able to learn the rule. Children aged 4-6, however, failed. Five of the six crows failed the test. But Kitty, a 6-month-old crow, passed it. She put most of the stones into the red tubes.

So, could a bird be more clever than a kindergartner? Don’t be too quick to say no.

1. The first paragraph is ________ about crows.
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A.crows’ brains can’t be worse than those of 6-year-old children.
B.crows’ brains may be better than those of 7-year-old children.
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D.crows’ brains may be better than those of 6-year-old children.
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【推荐2】It is common to see many different kinds of insects while spending time outside in summer. Some of them do not trouble people and can even add beauty to the natural environment. Other insects can be bad for the environment or humans. The population of these insects seems to stay large.

But scientists say this may not be true for some flying insects. There is growing evidence (证据) that the number of these insects is getting smaller and smaller.

One researcher Doug Tallamy, a professor at the University of Delaware, looks into the present insect population. He remembers walking through Washington, D. C. in the past when it was “alive with insects, especially butterflies”. Now, he said, “The flying insects are actually gone.” E.O. Wilson, another researcher of Harvard University, said this seemed to be true when he made a drive last year from Boston to Vermont. He was surprised that, during his trip, he counted only one insect that had hit the car’s front window. Several other scientists have carried out similar tests by checking how many insects hit their cars while traveling.

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