1 . A baby giraffe, called a calf, can stand up and walk about an hour after it comes into the world. At least, it should be able to. That wasn’t the case with Msituni, a giraffe born at the Safari Park. The very day Msituni was born, her front legs were bending improperly, making it difficult for her to stand and walk.
Dr. Kinney, the wildlife care specialist at the park and his team recognized the problem and reacted quickly. They realized Msituni would need medical treatment. First of all, they decided to bottle raise Msituni because her injuries prevented her from staying with her mom. The care team aimed to reduce long-term joint damage, and do their best to ensure Msituni has a long, healthy life.
With the information from the detailed 3D imaging of Msituni’s legs, the care team determined that specialized orthotic braces(矫形器)should be able to fix the position of Msituni’s legs. However, her size made finding supports for her legs very challenging.
The solution came in partnership with Hanger Clinic, a nationwide provider of orthotic braces. While the company focuses on care for humans, the company’s experts asked Safari Park wildlife care staff for advice. Together, they made a pair of orthotic braces for the calf. They wanted to enable Msituni to lie down, stand, walk, and run like a healthy giraffe.
Finally, the treatments were a success. After about two months, with Msituni’s legs correctly positioned, caregivers were able to remove her leg braces. Today, Msituni can be found playing with the rest of giraffes in the Safari Park.
“It was worthwhile to use problem-solving skills to help wildlife,” said Dr. Kinney. “To address the challenges that wildlife faces, we need to work together.”
1. What was Msituni’s problem?A.She got injured in the park. |
B.She had trouble with her legs. |
C.She found it difficult to breathe. |
D.She was left alone by her mother. |
A.developed a special medicine |
B.were teamed up with other experts |
C.trained Msituni how to live in the wild |
D.guided the healthy giraffes to accept Msituni |
A.Deal with. | B.Come across. |
C.Concentrate on. | D.Be responsible for. |
2 . A butterfly’s wings can have many jobs besides keeping the insect high up in the air. They may be used to attract mates, or to warm potential attackers to stay away. All of these roles, though, depend on their unchanging colouration. This plays into the idea that butterfly wings are dead tissue, like a bird’s feathers. In fact, that’s not true. For example, in some species males’ wings have special cells releasing some chemicals which attract females.
Nanfang Yu, a physicist at Columbia University, in New York, has been looking into the matter. Together with Naomi Pierce, a butterfly specialist at Harvard University, he has now shown, in a paper published in Nature Communications in February, 2020, that butterfly wings are, indeed, very much alive.
In their experiments, the two researchers used a laser to heat up spots on the wings of dozens of butterfly species. When the temperature of the area under the laser reached 40℃ or so, the insects responded within seconds by doing things that stopped their wings heating up further. These actions included a butterfly turning around to minimize its profile to the laser, moving its wings up and down or simply walking away.
Butterflies engaged in all of these heat-minimizing activities even when the researchers blindfolded them. That suggested the relevant sensors were on the wings themselves. Dr. Yu and Dr. Pierce therefore searched those wings for likely looking sensory cells. They found some, in the form of neurons (神经元) that were similar to heat detectors known from other insects. They also uncovered disc-shaped cells that appeared to be similar to pressure-sensitive neurons. They guess that these are there to detect deformation of the wing—information an insect could use to control its flight pattern.
The third discovery they made to contradict the “dead wing” idea was that some butterfly wings have a heartbeat. A butterfly’s wings have veins (静脉). These carry a bloodlike liquid which, researchers have now found in males, shows a pulse of several dozen beats per minute. The source of this pulse appears to be the scent pad, a dark spot on the wings that produces the female-attracting chemicals. Apparently, this “wing heart” acts as a pump that helps bloodlike liquid through the scent pad.
In all their experiments simulating different environmental conditions, Dr. Yu and Dr. Pierce consistently found that, different parts of the wing are covered by different sorts of scales (鳞屑). In particular, tubes pass through scales over the scent pads. This improves their ability to spread heat away and helps keep the living parts of a butterfly’s wing alive.
1. A bird’s feathers are mentioned in Paragraph 1 to ________.A.introduce the latest research findings on a bird |
B.highlight the special feature of a bird’s feathers |
C.show common knowledge about butterfly wings |
D.stress the difference between a butterfly and a bird |
A.Butterfly wings are complicated living organs. |
B.Butterfly wings have little reaction to external heat. |
C.The scent pads on some male butterfly wings are their hearts. |
D.Heat-minimizing activities help detect deformation of the wings. |
A.Seeing Is Believing | B.More Than Meets The Eye |
C.Nothing Seek, Nothing Find | D.Fine Feathers Make Fine Birds |
3 . Around six weeks ago, Kaileen came running into the house, just getting off the bus from school. She was excited about a story about homeless pets because of Hurricane (飓风) Katrina and all that was going on to help them. She said that this information came from her animal newspaper (your KIND News). Kaileen has a great love and compassion (同情心) for animals, so her excitement did not surprise me. Her next ideas, however, did. She said that we should go around right then to our neighbors and collect all their change to send to the animal shelters (保护所).
I thought this was a school project, but in fact, it was not. This was what Kaileen wanted to do on her own! Well, it warmed me all over. To see your child so willing to help others just lets you feel that maybe you had done something right in raising (养育) her.
Anyway, I told her to make a card and send it out to our neighbors first. With the help of her older brother, Kaileen soon made a lovely card that asked our neighbors to help these pets by giving their spare change. She gave them a few days and a date she would come by to pick up any donations (捐赠).
Well, I had to go out and buy a donation box. Kaileen collected $279.50!!! I just thought you would like to know how KIND News had touched a little one’s heart and given her the idea to show her compassion for animals. Thank you — we really enjoy your paper.
1. Why was Kaileen excited when getting off the bus from school?A.Because she was excited about a story. |
B.Because she was excited about homeless pets. |
C.Because she heard about a story about Hurricane. |
D.Because she wanted to help homeless pets because of Hurricane. |
A.Pleased and excited. | B.Surprised and moved. |
C.Tired and sad. | D.Worried and angry. |
A.collects donations for homeless people | B.sets up many shelters for homeless animals |
C.tells children how to keep pets healthy | D.encourages children to help homeless pets |
A.parent | B.teacher | C.brother | D.neighbor |
4 . Shaw began losing his sight as a young man and had difficulty holding jobs due to his failing vision.
Finally Shaw heard of a program about the tiny guide horses. Shaw learned that the horses are clean, friendly, and easy to train. They can be housebroken and learn to live in an urban setting, but they are best suited for suburban or rural homes.
Shaw immediately applied to be and was accepted as the first person to receive a guide horse. He went to the Burlesons’ farm to begin his training.
As part of their training, Shaw and Cuddles learned to cross busy streets, step onto stairs, and find doorknobs and elevator buttons. Cuddles even showed his ability to step in front of Shaw and block him, to prevent him from walking into a dangerous situation.
A.Shaw felt most satisfied with it. |
B.Eventually, they took the final test. |
C.Best of all, they live for 25-35 years. |
D.His friends suggested that he apply for a guide dog. |
E.The guide dog was so helpful while accompanying him. |
F.The little horse also expertly led Shaw through busy shopping malls. |
G.As soon as he met Cuddles, he knew he was making the right choice. |
5 . Love Is Blind: The Magic of Tabby
In October, 2003 I started my work at my local animal shelter’s Adoption Department. Over the years, more than 50,000 animals have
Tabby was an ancient Cocker Spaniel, probably 14 years old. What’s more, she was blind and deaf. Tabby’s chances at adoption seemed remote at best. After all, we didn’t have many adopters coming in asking: “Can you show me all of your really old dogs who are also
One day a woman named Loretta came to the shelter. Her son, Gary, had seen Tabby’s pictured and stories on the shelter’s website at home. They were interested in meeting her! It was the only enquiry we ever received about Tabby. What could a young child possibly see in a 14-year-old dog who was both blind and deaf? Most boys would want a dog who could grow with them and
If Tabby’s story had simply ended with her successful adoption, it would still have been something very special indeed.
How could it be? Nobody could explain how Tabby did it. But those of us who were fortunate enough to know her and her family had
A.broken | B.passed | C.painted | D.locked |
A.recall | B.leave | C.forget | D.abandon |
A.stubborn | B.active | C.disabled | D.patient |
A.hospital | B.shelter | C.farm | D.roadside |
A.get | B.run | C.look | D.break |
A.often | B.possibly | C.never | D.generally |
A.However | B.Moreover | C.Therefore | D.Otherwise |
A.learnt | B.suffered | C.heard | D.differed |
A.explanation | B.notice | C.suggestion | D.warning |
A.witnessed | B.created | C.achieved | D.performed |
Since 2015, Shanghai Disney Resort (迪士尼度假区) has been carrying out monthly bird-watching activities in its Wishing Star Park. Over the past eight years, more than 120
7 . Working Together to Save the Sea Turtles
Florida has some of the best beaches in the world. Thousands of people visit the state to enjoy the sand. But these beaches are also home to five species of sea turtles. A major problem is facing these interesting creatures.
Some volunteers and researchers in Florida take direct action to help the turtles. They look closely at the sand to find the fin (鳍) marks the mother sea turtles left there.
These are not the only Floridians taking action to help protect these creatures. Florida’s government has passed laws to save the turtles. One of these laws is “Florida’s Marine Turtle Protection Act”. This law prohibits anyone from disturbing or destroying marine turtles, nests, or eggs.
Another way Floridians work together to save these creatures is through organizations like the Sea Turtle Conservancy. The Sea Turtle Conservancy helps people take steps that will help reduce the threats that put sea turtles in danger. For instance, bright lights on buildings near the beach can negatively impact sea turtles. Baby sea turtles usually hatch on the sandy beach and head to the ocean. When there are bright lights coming from the other side of the shore far from the ocean, the baby turtles get confused.
A.Many of them do not make it to the ocean and die. |
B.Some of these turtle species are in danger of going extinct. |
C.This helps them to locate where the sea turtles laid their eggs. |
D.It also helps make sure that sea turtles’ natural habitats are protected. |
E.Female sea turtles come from the ocean and onto these beaches at night. |
F.They use their fins to move back across the beach and return to the ocean. |
G.Every Floridian can do their part to protect sea turtles and their environment. |
Most gardeners will probably say gardening is good for you. According to a study, people who garden have a
Discovered by Amateurs
Some astronomers spend their entire careers looking for new discoveries in space, but a 10-year-old Canadian girl found one on her first try. In January, 2011, Kathryn Gray, who often studied stars, was looking at recent pictures of outer space and comparing them to pictures taken years earlier. The pictures were just thousands of tiny spots of light, but Gray spotted a star that looked different in the recent pictures. Could it possibly be a supernova (超新星)? Usually a supernova is brighter, and it becomes visible through a telescope due to the brightness. Later Gray’s discovery was confirmed, and she became the youngest person to discover a supernova.
Throughout history, important discoveries in astronomy have been made by amateurs. An early example is William Herschel, who discovered Uranus in 1781. Uranus had been observed before, but expert astronomers thought it didn’t belong to our solar system. When Herschel saw it with a telescope he had designed and built himself, he realized that it was orbiting the sun. This meant that Uranus was a planet. And so, the map of our night sky was changed forever.
Then in 1930, a major discovery was made by a 24-year-old man, a farmer’s son, with no college education or formal training in astronomy. Clyde Tombaugh had built a homemade telescope using instructions from an article in a boy’s magazine. He used to draw detailed pictures of the surfaces of Mars and Jupiter. He sent the pictures to Dr. V. M. Slipher at the Lowell Observatory, who was so impressed and offered him a job on his team. Within a year, Tombaugh discovered a ninth planet, Pluto. It was regarded as a planet for 76 years, but scientists decided in2006 that Pluto didn’t meet all of the criteria for a true planet. It was then considered to be a dwarf planet.
John Dobson is another influential amateur astronomer because he enabled so many others to take up astronomy as a hobby. In 1956, after constant attempts, he built a powerful telescope out of low-cost materials, such as paper tubes used in construction. With affordable tools like Dobson’s telescope, more amateurs today have the technology that is needed to make discoveries of their own.
1. How did Kathryn Gray discover the supernova?2. Why did Clyde Tombaugh get a job at the Lowell Observatory?
3. Which of the amateur astronomers mentioned in the passage has impressed you most? Why? (about 40 words)
10 . Episodic memory (情景记忆) allows humans to revisit past personal experiences in their minds, and it was once thought to be a special skill of humans. Although there are still arguments about the extent of this type of memory in non-human animals, scientists have proved that creatures like rats and dogs can pass tests that are developed to assess episodic memory over the past two decades. “Curiously, there is a lack of research investigating dolphins’ episodic memory,” University of Cambridge cognitive (认知的) scientist James Davies says. Therefore, this surprising fact encourages him to fill this gap.
The team used “where” and “who” questions in their research, each on a different test. Each dolphin was first trained to retrieve a ball from the water, and then trained to get a ball by approaching a person holding it in front of them while ignoring an empty-handed person standing at a different spot. During this training, the locations were randomized (使随机化) and the person holding the ball differed each time, so that those details were irrelevant to learning the retrieving behavior. Then, for the tests, the dolphins were asked to retrieve the ball as they had learned to do, but after 10 minutes, something changed-this time, the ball couldn’t be seen, as it was now behind one of the two people’s backs. In the “where” tests, the ball was hidden in the same spot as in the training, but both people had been changed, while in the “who” tests, the locations of the people changed but the ball remained with the person who’d had it previously.
Eight dolphins went through each of the two tests, separated by at least 48 hours. All the dolphins got it right in choosing the correct spot on the “where” experiments, and seven achieved success on the “who” experiments.
Kelly Jaakkola, a psychologist, says that based on their cognitive skills, dolphins are a good candidate for having episodic-like memory, and this study goes really far in showing that. She also says, “The more we look for such capabilities in non-human animals, the more species we’ll likely find them in.” She adds, “An exciting question is therefore ‘Where do we draw that line? Which animals do have it, which animals don’t, and what sort of cognitive or neurological or social characteristics do those animals share? ’ That’s going to be the fun part of the game.”
1. What does the underlined word “retrieve” in Paragraph 2 probably mean?A.Fetch. | B.Move. | C.Throw. | D.Play. |
A.The locations of the people involved in the tests. |
B.The memory tasks that dolphins need to perform. |
C.The ability of dolphins to communicate with humans. |
D.The dolphins’ characteristics related to their memory processing. |
A.Dolphins pass the tests as a result of training. |
B.It is very likely that dolphins are affected by people during the tests. |
C.Scientists will probably find episodic memory in all non-human animals. |
D.The influence of dolphins’ familiarity with a location or a person is avoided. |
A.Dolphins Are the Most Intelligent Animals |
B.Dolphins May Remember Personal Experiences |
C.Episodic Memory Is Important for Humans and Animals |
D.A Scientific Method Is Used to Study Dolphins’ Memory |