1 . Any schoolchild knows that a whale breathes through its blowhole. Fewer know that a blowhole is a nostril (鼻孔) slightly changed by evolution into a form more useful for a mammal that spends its life at sea. And only a dedicated expert would know that while toothed whales, such as sperm whales, have one hole, baleen (鲸须) whales, such as humpback and Rice whales, have two.
Even among the baleen whales, the placing of those nostrils differs. In some species they are close together. In others, they are much further apart. In a paper published in Biology Letters Conor Ryan, a marine biologist at the Scottish Association for Marine Science, suggests why that might be. Having two nostrils, he argues, helps whales smell in stereo (立体空间).
Many types of baleen whales eat tiny animals known as zooplankton (浮游动物), which they catch by filtering (过滤) them from seawater using the sheets of fibrous baleen that have replaced teeth in their mouths. But to eat something you first have to find it. Toothed whales do not hunt by scent. In fact, the olfactory bulb—the part of the brain that processes smell—is absent in such creatures. But baleen whales still have olfactory bulbs, which suggests smell remains important. And scent can indeed give zooplankton away. Zooplankton like to eat other tiny creatures called phytoplankton (浮游植物). When these are under attack, they release a special gas called dimethyl sulphide, which in turn attracts baleen whales.
Most animals have stereoscopic senses. Having two eyes, for instance, allows an animal to compare the images from each in order to perceive depth. Having two ears lets them locate the direction from which a sound is coming. Dr Ryan theorized that paired blowholes might bring baleen whales the same sorts of benefits.
The farther apart the sensory organs are, the more information can be extracted by the animal that bears them. The researchers used drones to photograph the nostrils of 143 whales belonging to 14 different species. Sure enough, baleen whales that often eat zooplankton, such as the North Atlantic right whale, have nostrils that are farther apart than do those, such as humpback whales, that eat zooplankton occasionally. Besides allowing them to breathe, it seems that some whales use their blowholes to determine in which direction dinner lies.
1. What do we know about whales’ nostrils according to the first two paragraphs?| A．They are adapted ones. | B．They are developed merely for smell. |
| C．They are not easy to detect. | D．They are fixed universally in numbers. |
| A．The teeth that baleen whales have. |
| B．The smell that phytoplankton send. |
| C．The sound waves that zooplankton create. |
| D．The chemical signals that zooplankton give off. |
| A．By quoting a theory. | B．By using examples. |
| C．By making contrast. | D．By making inferences. |
| A．The sense of smell. | B．The possibility to attract food. |
| C．The ability to locate food. | D．The ability to communicate. |
2 . Thanks to in-depth reporting by the Wall Street Journal, we now know that Facebook has long been aware its product Instagram has harmful effects on the mental health of many adolescent users. Young girls, in particular, struggle with their body image thanks to a constant stream of photos and videos showing beautiful bodies that users don’t think they can attain.
While the information the Journal covered is essential and instructive, it does not tell the whole story. Deep down, this is not an Instagram problem; it’s a people problem. Understanding that distinction can make the difference between a failed attempt to contain a teen’s interest in an addictive app and successfully addressing the underlying problem leading to mental distress induced (诱发) by Instagram.
Critics were quick to shame Facebook for sitting on the data and not releasing it to researchers or academics who asked for it. Others criticize the social media giant for not using the research to create a safer experience for its teen users. The anger, while understandable, is misplaced.
While I’m reluctant to defend Facebook, I’m not sure it’s reasonable to blame the company for withholding data that would hurt its business. Have you ever binge-watched (狂看) a Netflix series? I assure you it wasn’t a healthy endeavor. You were in active, likely did nothing productive, mindlessly snacked and didn’t go outside for fresh air. It is an objectively harmful use of time to stare at a TV or laptop for a full weekend. Should we respond by shaming Netflix for not alerting us to how damaging an addictive product can be?
While it’s reasonable to say Instagram makes esteem issues worse, it strains credulity (夸张到难以置信) to believe it causes them in the first place. You create your own experiences on social media. For the most part, you choose which accounts to follow and engage. If you’re already vulnerable to insecurities and self-sabotage (自损) — as many teens are — you will find accounts to obsess over. And this isn’t a new phenomenon.
Before social media, there were similar issues fueling self-esteem issues. Whether the target be magazines, movies or television shows depicting difficult-to-attain bodies, there has been a relatively steady chorus (异口同声) of experts nothing the damage new media could cause young viewers.
Self-esteem issues have an underlying cause — one that’s independent of social media use. Instagram merely enhances those feelings because it provides infinitely more access to triggers than older forms of media. It’s more worthwhile to address those underlying factors rather than to attack Facebook.
1. The author thinks the criticisms against Instagram __________.| A．are successful attempts to change teens’ interest in addictive apps |
| B．address the Instagram - induced mental pain |
| C．are only based on the data released by Facebook |
| D．are not directed at the fundamental problem |
| A．compare the criticisms against it and Facebook |
| B．defend why Facebook is to blame |
| C．suggest the critics’ remarks are not to point |
| D．show Netflix does more harm to teens |
| A．it is human nature to get addicted to social media |
| B．users decide on their experiences on social media |
| C．people have a tendency to feel insecure online |
| D．people are keen on fabricating their self - profile |
| A．the unprecedented criticism facing Facebook |
| B．the alarming online habits of teenagers worldwide |
| C．the root cause of Instagram - induced mental strains |
| D．the harmful impact of Instagram on teenagers |
A skywell, or “tian jing” in Chinese, is a typical feature of a traditional home in Southern and Eastern China. They are commonly seen in homes
Since decades ago, the government
The fact that skywells still exist today shows
On a hot September afternoon, Peter and his friend Isabel were on their way to the library. When they passed by Tubman park, Isabel suggested cutting through it to get to the library. As they entered the park, the sight of the swings (秋千) and the merry-go-round brought back a flood of memories of their childhood spent there. But now everything looked so old, sad, and dirty. Litter lay on the ground next to an overflowing trash bin. There were still young schoolchildren playing there but they had to avoid the trash that littered the playground. A little boy told them that the city took the other trash cans away and the remaining one never got emptied often.
As they headed toward the library, the two high school students wrinkled their forehead. In the library, they encountered Mrs. Evans, their kind-hearted fifth-grade teacher, retired yet still passionate. Mrs. Evans listened as Isabel and Peter eagerly explained what they’d seen. Finally, she recommended them to go to the City Hall to voice their concerns.
The next day, Isabel and Peter went into the building of the City Hall but were met with an impatient officer. They were informed that the city couldn’t help with their problem due to a tight budget. Discouraged, they left and turned to Mrs. Evans for help.
Under her guidance, they decided to ask Go Green, a non-profit organization whose goal is to protect the environment, for help. “This group is good at raising money for projects just like yours, ” said Mrs. Evans. She promised to arrange them to present their ideas to Go Green. Hearing this, their face lit up.
Two main tasks remained ahead: researching ways to clean up the park and preparing a convincing presentation. As Isabel was good at researching while Peter always had a talent for speaking, they cooperated quite well. Isabel learned from a science magazine that a new type of trash bin can squeeze the trash down without being emptied often, which saves time, money, and energy. Based on this, Peter practiced his presentation over and over again.
注意：1. 续写词数应为150左右；2. 请按如下格式在答题卡的相应位置作答。
A week later, Peter stood nervously at the back of the hall where Go Green was meeting.
_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________After the meeting, Isabel excitedly told Peter the good news.
_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Sam was a junior high school student. He lived in a community in Charlotte and usually had little exposure to country life. So much of what he knew about plants came from text-books. Sam was a kind-hearted person. He longed for a chance to explore nature and he wanted to do his part to beautify the world.
Finally, the opportunity came. On Arbor Day (植树节), his class organized a trip to a local village to plant trees. Sam was excited about it and couldn’t wait to tell his mom the good news. So the next day, Sam and his mom went to buy some tools for planting trees, including a shovel(铲), a bucket, gloves and so on.
On the day of the event, Sam and his classmates arrived early at the starting point. It was a beautiful day and everyone looked particularly happy. With the tools in hand, Sam got into the bus with everyone else and headed off to their destination.
As soon as they reached the village, all the students were divided into three teams by their teacher. One team was responsible for planting the trees, one team for shovelling the soil and one team for watering the trees. At the teacher’s command, everyone started to do their job.
However, it was the first time that many of the students had taken part in planting trees, so they had no idea about how to start. Of course, Sam was one of them. Fortunately, their teacher was a middle-aged man from the countryside who had some knowledge of planting trees. In order to set an example to the students, the teacher started to plant trees himself. After watching the teacher plant the trees, everyone also became busy. Before long, they planted hundreds of trees. Sam watched very carefully, not wanting to miss any of the details. Finally, Sam learned how to plant trees by himself and felt happy.
注意：1.续写词数应为150左右;
2.请按如下格式在答题卡的相应位置作答。
A few days later, a storm damaged some young trees in the community.
_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________The neighbours praised Sam for what he had done.
_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________6 . The motivation for his invention came to Aarrav Anil last year when he saw his uncle Arjun, who has Parkinson’s disease, struggle to eat. Some food spilled (溢出) out of his mouth, the rest splattered (溅) on his clothes. Arjun attempted to keep his dignity but the frustration forced him to give up and call his helper to feed him.
The sight of his uncle’s shaking the spoon so violently inspired Aarrav, 17, from Bengaluru, south India, to turn to robotics. He locked himself in his room with microcontrollers, sensors, motors, and a 3D printer. What emerged was a prototype (原型) of a smart spoon that is now undergoing trials at the RV College of Physiotherapy in Bengaluru.
The sensors in the battery-operated spoon detect shaking on one side and activate movement on the other, effectively cancelling out shaking to keep the spoon stable.
“I’ve been fine tuning the design based on the college’s feedback-that it needs to be waterproof so that it can be washed without damaging all the electronics inside; that it must be removable so it can be cleaned and replaced by a fork, ” Aarrav says.
For Aarrav it is the peak of a 10-year interest in mechanics that began when his mother bought him a Lego set. He has now represented India at more than 20 robotics competitions across the world.
When the blueprint for the smart spoon won first prize in the future innovators category at last year’s World Robot Olympiad in Germany, Aarrav felt encouraged to make the prototype.
More than 7 million people in India are estimated to have Parkinson’s disease, a condition in which parts of the brain become progressively damaged and which mainly affects people over the age of 50. Symptoms (症状) include involuntary shaking and stiff muscles. As the disease progresses, eating can become more difficult, forcing people to rely on help from others.
Aarrav’s ambition is that every family that has someone with Parkinson’s will have the smart spoon. He says his uncle Arjun’s words keep echoing (回响) in his mind: “Who would have thought such a small thing could mean the difference between dignity and indignity?”
1. What can Aarrav’s invention help people with Parkinson’s do?| A．Control their physical balance. | B．Boost their mood and relieve stress. |
| C．Maintain a good range of movement. | D．Feed themselves more independently. |
| A．Overturning. | B．Reconsidering. |
| C．Conducting a study of. | D．Making minor changes to. |
| A．To show prospects of Aarrav’s invention. |
| B．To reveal the nation’s poor health situation. |
| C．To popularize general knowledge of the disease. |
| D．To convince people to volunteer for social causes. |
| A．He enjoys being alone. | B．He has an innovative mind. |
| C．He used to be a health worker. | D．He longed to be a businessman. |
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1. What is special about United Travel company?| A．It provides one-stop complete tourism. | B．It supplies the best flight and hotels. |
| C．It offers transfer service. | D．Its guides speak various languages. |
| A．Send it to your destination directly. | B．Carry it by yourself. |
| C．Keep it as light as possible. | D．Hand it to Luggage Concierge. |
| A．To diversify the economy. | B．To attract tourists. |
| C．To conserve the environment. | D．To entertain readers. |
Since the pre-Qin period, Chengdu
It is believed that “face changing” has its roots in evolution. Early humans needed survival strategies to avoid fierce animals and foreign
Once the performance starts, the actor keeps pulling down one mask after
In fact, the different kinds of characters and personalities that Sichuan Opera brings alive can
9 . The sperm whale is an astonishing creature. It’s longer than a semi-truck, weighs more than 90, 000 pounds and is the largest member of the toothed whale family. It’s known to dive 6, 500 feet in search of food, and to stay down there for longer than an hour at a time.
Perhaps most fantastically, the sperm whale’s brain weighs as much as 20 pounds-the biggest of any species on Earth. But when it comes to brains, is size all that matters? There’s a lot we don’t know about the sperm whale’s intelligence because it’s difficult to carry out neurological (神经的) testing on such a huge marine mammal. But some clues point to sperm whales being much smarter than we give them credit for.
A 2021 study published in Biology Letters, for example, looked back to 19th-century historical logbooks from whalers. Researchers found that sperm whales were at first easy to catch-but almost immediately, the whales learned how to evade hunters and whaling success dropped by 60 percent. The study suggests that the whales passed information to one another through soundwaves to avoid being caught.
Animals that have big brains usually have a few things in common. They usually live long lives; for example, sperm whales can live for 70 years or longer. Additionally, they’re capable of complex behaviors and they tend to be more socia1. Whales may work together to hunt or communicate in a language all their own.
What’s more, humans, whales and dolphins all have spindle neurons in their brains. These nerve cells make us capable of deeper thought, such as reasoning skills, memory, communication and adaptive thinking. And like humans, whales have emotional intelligence- meaning they＇re capable of empathy, grief and sadness. Still, in proportion to (与…成比例)our body size, the human brain is bigger than that of the sperm whale.
Yet there’s still so much we don’t know about how smart sperm whales really are. And just like the whalers of a century ago, we have likely been underestimating marine mammals, whether large or small, for as long as we’ve known of their existence.
1. Why do people know little about the sperm whale’s intelligence?| A．Sperm whales’ big size makes research difficult. |
| B．It didn’t attract scientists’ attention until recently. |
| C．Whalers didn’t keep enough records of their hunting. |
| D．Sperm whales usually stay deep down in the ocean. |
| A．Track. | B．Avoid. | C．Locate. | D．Trick. |
| A．The nerve cells distinguish humans from animals. |
| B．Sperm whales have smaller brains than humans. |
| C．Spindle neurons make higher intelligence possible. |
| D．Emotional intelligence is unique to whales and humans. |
| A．Sperm Whales Are Astonishingly Smart |
| B．Sperm Whales Have the Biggest Brain |
| C．Break the Code of Whale Language |
| D．Unlock the Mystery of Sea Mammals |
As a single mother, I’ve never doubted my daughter Jane’s dream to be a singer on the stage. At an early age, she was crazy about singing. Whenever she had a chance, she would sing to her heart’s content. Her sweet and charming voice tended to get people around attracted to her songs.
Living in a small city, I took several odd jobs, determined to do everything in my power to support her. Soon after Jane attended school, her music teacher Mary noticed her talent by chance and volunteered to give her some guidance on how to sing. Jane practiced so hard that before long she made great progress in singing.
Unfortunately, one noon a year later, Jane was crossing the street when a careless driver knocked her down. She was rushed to hospital. When I hurried there, the doctor told me that my daughter would probably not stand on her own feet. I froze with shock, feeling as if I had been thrown into a dark world. Weak and dizzy, I was about to fall to the ground when someone took hold of me.
It was Mary, who got the news and raced here. She comforted me, saying firmly, “Grace, Jane needs you. You must stay calm and strong.” I nodded. Having calmed down, I entered the ward with Mary.
That night, Jane recovered her consciousness (知觉) and opened her eyes. Holding her hand, I said, “My dear, everything would be fine.” Mary comforted her gently, “I know you are a strong girl, Jane. Don’t worry. We’ll be standing by you.” I was heartbroken to see tears streaming down Jane’s cheeks.
After two months, we returned home from hospital. Her teachers and friends frequently visited her. Jane eventually accepted the fact that she would have to get around in a wheelchair. Never did she refer to the subject of singing again. I knew she was a nice and understanding girl, who was afraid that talking about her original dream would upset the two of us.
注意：1.续写词数应为150左右；2.请按如下格式在答题卡的相应位置作答。
One day, however, Mary came with good news.
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________When the host announced it was Jane’s turn, she was wheeled onto the stage.
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