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题型:阅读理解-阅读单选 难度:0.65 引用次数:127 题号:10725577

Elephants are truly incredible animals. August 12 is World Elephant Day which means to help save elephants. What do you know about elephants? Here are some facts you may not know.

We know that elephants are large. But did you know that elephants often avoid eating a type of acacia tree(金合欢树), because it is home to ants and an elephant doesn’t want to get the ants inside its trunk. Its trunk is full of sensitive nerve endings(敏感神经末梢).

Female elephants live in groups of about 15 animals. The oldest in the group is the leader. She decides not only when and where they move but also when they rest all the year. Male elephants leave the female groups between age 12 and 15. But they aren’t loners. They live in all-male groups.

Asian elephants don’t run. Running requires lifting all four feet at once. But elephants filmed in Thailand always kept at least two on the ground at all times.

Elephants have passed the mirror test. They recognize themselves in a mirror. According to tests, great apes(巨猿), and dolphins(海豚) also have this ability.

Elephants can get sunburned so they take care to protect themselves. “Elephants will throw sand on their backs and on their head to keep them from getting sunburned and to keep bugs off,” said Tony Barthel, working at Smithsonian’s National Zoo. How do elephants protect their young? Adult elephants will put them in sand and then they will stand over the little ones as they sleep.

Some farmers in Kenya protect their fields from elephants by lining the borders with beehives(蜂巢). Not only are their crops saved, but the farmers also get more money from honey.

1. World Elephant Day is designed to________.
A.show some facts about elephantsB.call on people to protect elephants
C.tell people some animals are in dangerD.introduce Asian elephants features
2. Why are elephants not willing to eat acacia trees?
A.Elephants are sensitive to acacia trees.
B.Acacia trees are too tall to reach.
C.Fruits on the acacia trees are hard to eat.
D.Elephants’trunks are easily hurt by ants in the trees.
3. What do we infer about male elephants?
A.They live with female elephants at an early age.
B.They decide when and where their groups move.
C.Their oldest male elephant is chosen as their leader.
D.They can run faster than female elephants.
4. How do elephants protect their young kids?
A.Put some sand on kids’heads.B.Guard kids when kids sleep.
C.Pat kids’backs from time to time.D.Use their trunks to keep bugs off.

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【推荐1】Some termite (白蚁) species have figured out how to enjoy the shelter of the huge complex nests that the insects build without contributing to their construction. They avoid the full anger of their builder hosts by being extremely easy-going.

Animals that live in the nests of another species without affecting them are known as inquilines. Inquiline termites are unique among termites in being unable to make their own nests. Instead, they live in the hallways built by another termite, Constrictotermes cyphergaster. Until now, it has been unclear how the two parties kept peaceful in such tight quarters because termites are typically very aggressive towards outsiders.

Helder Hugo at the University of Konstanz in Germany and his colleagues collected Constrictotermes cyphergaster’s nests in the Brazilian Cerrado and brought them into the laboratory. They then placed host and tenant (房客) termites in either open or narrow areas and used video to track and record the ways in which the two species reacted to each other.

Right from the start, the inquiline’ termites moved around less than their hosts and interacted little with them, even in the much narrower area. “Many times,” says Hugo, “when two unrelated groups are put together in a limited space—such as an experimental area—the outcome is conflict with losses from both sides.” But that didn’t happen here. Despite attacks from host termites, the tenant termites were obedient. Hosts would bite or attack the inquilines with strong chemicals, but their targets never responded in the same way, choosing to flee. Some ignored the hosts completely.

“We did not expect that they would never fight back,” says Hugo, noting that the inquilines are capable of protecting their own place with mouths. “By preventing conflict going worse, inquiline termites may considerably improve their chances of living together with their host termites peacefully.”

“Passiveness does not necessarily lead to defeat, but can be a very useful strategy, saving energy and resources,” she adds. “Nature may not always be red in tooth and claw, and aggression is not any more successful a strategy than ‘cowardice’ (儒弱).”

1. What is the feature of the inquiline termites?
A.They live in another termite species’ nests.
B.They are aggressive towards outsiders.
C.They like to build their own nests.
D.They are communicative tenants.
2. What do you learn about the experiment in paragraph 3?
A.The differences between the two species.
B.The findings of the observation.
C.The living habits of termites.
D.The process of the research.
3. What does Hugo think of the inquiline termites’ living strategy?
A.Aggressive.B.Unacceptable.C.Effective.D.Dangerous.
4. What’s the best title for the text?
A.The Characteristics of Termites
B.Passiveness Doesn’t Necessarily Lead to Defeat
C.The Relationship Between Host and Tenant Termites
D.Termites Use Cowardice to Avoid Their Hosts’ Anger
2021-03-05更新 | 1139次组卷
阅读理解-阅读单选(约350词) | 适中 (0.65)

【推荐2】On May 9, 2016, biologist Chris Kelly saw a lone bat on a bridge crossing the French Broad River outside Asheville, North Carolina. Five years later, everything wildlife biologists thought they knew about endangered gray bats in this corner of the Blue Ridge Mountains has been changed.

Kelly, a biologist with the N.C. Wildlife Resources Commission, was on the bridge doing bird work. Bats aren't her area of expertness, so she reached out to the state's bat experts. Joey Weber, a technician who was working for the Commission, arrived at the bridge later that day and found 19 big brown bats inhabiting in the expansion joints. But he heard many more.

That night, Weber was joined by Katherine Etchison, the Commission's bat biologist, for an emergence count. They counted 240, but a busy schedule meant the team couldn't return for a second emergence count until July 18. “I was very eager to get back out there because I really thought there would be something besides big brown bats. I was thinking Mexican free-tailed bats, which would be a first for Buncombe County, and I was right but that wasn't the big news,” said Etchison.

The second emergence count recorded 1,000 bats. To learn which species used the bridge, biologists recorded the ultrasonic(超声的) sounds made by emerging bats, which are species-specific. Later that night, Etchison rolled through the recorded calls, displayed vividly on her computer, and the suspected Mexican free-tailed bats showed up. But, so too did something very unexpected.

She immediately texted Susan Cameron, an Asheville-based biologist. Along with big brown and Mexican free-tailed bats, the computer identified the calls of endangered gray bats. The discovery was confirmed the next day when Etchison, Weber, and Cameron visited the bridge at dusk-just before bat emergence-and carefully captured a bat from one of the expansion, joints. The 2016 discoveries marked the first time gray bats were known to inhabit in North Carolina.

1. How did Kelly find the bat on the bridge?
A.Accidentally.B.Professionally.
C.Purposefully.D.Skillfully.
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A.That a big brown bat was identified.
B.That Mexican free-tailed bats showed up.
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D.That 1000 bats were recorded.
3. How did biologists recognize the species of the bats?
A.By emergence counting.
B.By recording specific sound.
C.By capturing the bats.
D.By looking through the computer.
4. Which of the following is a suitable title for the text?
A.An Endangered Bat DiscoveryB.A Biology Research
C.The Emergence of BatD.The Way of Finding Endangered Bats
2021-08-07更新 | 92次组卷
阅读理解-阅读单选(约370词) | 适中 (0.65)

【推荐3】I rescued my little Foxy several years ago. I wasn't looking for her, but she just crawled (爬)up onto my lap and went to sleep, so I took her home. She spent the night with her head on my pillow, and I knew she belonged to me.

I was her person. She didn’t really like other dogs or people.. .until I met my wife-to-be. The day Angelika came over to visit for the first time was the last time Foxy was truly my dog. She abandoned me for the love of a tender (温柔的)woman, and who can blame her? I would have done the same. Then Angelika and I got married, and we became a happy family.

The three of us always walk together through our village from the hills to the lake. We get exercise and have fun because Foxy enjoys her walks and strolls (漫步)through the neighborhood like a 10-pound prize pony (小马).

How sweet and lovely, you say, but there is dark side to the little furball! Foxy is now a one-woman dog - she has totally bonded with my wife and won’t go for a walk at all if Angelika is out. She just lies in her bed by the window waiting for her angel to come walk through the door, and I have to tell you, I feel a little rejected. But it is pretty cute.

I understand animal bonding. My therapy dog, Mercy, was with me for over a decade, and we were a total item. In fact, it wasn’t until Mercy died that I decided to remarry. That’s how much unconditional love she gave me.

Now my wife is getting to experience that kind of bond for the first time. Young or old, big or little, when your dog finds you, it’s an amazing experience, and the love you feel just makes your life sweeter.

When you adopt an animal, remember that it’s a lifetime commitment. And if your pet falls for your other half,   just enjoy watching the love.

1. What can we know about Foxy?
A.Foxy was always friendly to strangers.
B.Foxy introduced Angelika to me by accident.
C.Foxy’s love for the author remains unchanged.
D.Foxy fell in love with Angelika at first sight.
2. How did the author feel about the relationship between Foxy and Angelika?
A.Jealous.B.Delighted.C.Embarrassed.D.Disappointed.
3. What is the tone of the text?
A.Plain.B.Lively.C.Ironic.D.Serious.
4. What does the author mainly want to tell us in the text?
A.Pets can keep us company and never leave us.
B.Pets can bring us more joy than sorrow in our life.
C.Pets are our lifelong partners and deserve our care.
D.Pets are so cute that they are in great demand nowadays.
2021-04-27更新 | 132次组卷
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