Manatees — often called sea cows — are an anomaly in the animal kingdom. Neither predator nor prey, these peaceable creatures, which can grow to 13 feet and weigh more than 2,000 pounds, are evolutionarily devoid of aggression. Crystal River — “Manatee Capital of the World” — is the epicenter of their presence and recovery.
Yet despite some gains, manatees still face grave threats. Three-quarters of Florida’s 22 million people live along the coast, many in prime manatee habitat, where the strain of human-presence has degraded the state’s enchanted springs, waterways, and wetlands. In Indian River Lagoon, for example, an important manatee habitat along Florida’s densely populated east coast, decades of human waste, sediment from real estate development, and fertilizers from lawns and farms have clouded the water. That has killed seagrass, manatees’ main food source there. More than a thousand manatees have died in the lagoon during the past two years.
What people don’t understand is the need to help support them in waterways. That means restoring seagrass beds and freshwater aquatic vegetation, the basis of their existence and of the overall health of Florida’s waters. Steps to reverse the damage started small. Neighbors gathered with rakes, scooping up algae by hand. Ironically, it was Save Crystal River — the group environmentalists had opposed during their fight over the manatee’s endangered status — that spearheaded the restoration of aquatic vegetation. With funding from the state government, Save Crystal River hired Sea& Shoreline, an aquatic restoration firm, to remove the waste and replant the river bottom with eelgrass, which grows long, ribbon like leaves.
While the prospect of replanting the entire river was daunting, after vacuuming more than 300 million pounds of detritus and planting some 350,000 individual eelgrass pods by hand, the groups have flipped the river back to an ecosystem no longer dominated by algae.
Instead of spending the few short winter months in Crystal River before heading back out into the Gulf of Mexico to graze, some manatees now linger here year-round, enjoying fat times. Aerial surveys from January 2022 revealed the highest number of manatees ever recorded in these waters — more than a thousand in Kings Bay alone.
1. What is a feature of manatees?A.They are gentle animals. | B.They feed on small creatures. |
C.They are slightly aggressive. | D.They look cute for their shape. |
A.Climate change. | B.Habitat loss. |
C.Low food supply. | D.Human activities. |
A.By removing wastes from the river. |
B.By raising funds from the government. |
C.By replanting algae in the river bottom. |
D.By refining manatees’ living surroundings. |
A.They enjoy the cold winter of Mexico. |
B.They remain in Manatee Capital for long. |
C.They head towards the warmer waters during winter. |
D.They have the largest population ever recorded globally. |
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【推荐1】15 years ago, Erin Merryn met a kitten who needed a home when she was a college student.
He jumped into her arms and refused to let her go.
“I was attached immediately and decided that I would take a risk and try hiding a kitten in my college dorm where animals are obviously not allowed,” Erin recalled.
A week later she was caught and given 48 hours to remove the cat. After several phone calls, Erin was able to find an old lady to take Bailey, the kitten. But Bailey did not get along with his new housemate. As soon as Erin learned that he would be sent away, she immediately offered to take him back. “I plotted for a month to convince my parents to let me keep him.” said Erin.
Six years ago, Erin had Abby, her beautiful daughter. She didn’t know what Bailey would think about the new addition when she brought her home from the hospital.
“But it was love at first sight.” Erin said. Bailey stayed by Abby’s side, guarding and showering her with love and purrs. As Abby grew, he became her protective brother, watching over her every step of the way. Abby picked up a book one day and tried to read it with Bailey by her side. He became her perfect audience, and the sweet boy was completely attracted by Abby as she told him stories of wonder.
A video showing Abby reading to Bailey went viral on the Internet in 2018. Numerous people followed Erin on social media platforms.
Unfortunately, on December 8, 2018, just months after becoming famous, the 14-year old cat passed away from kidney failure.
A full month after Bailey’s passing, Erin still got cards and gifts from caring individuals. It is this love that Erin hopes Bailey’s fans hold on to. She wants her furry “first-born” to be remembered as a symbol of compassion that inspires others to treat the world with love.
1. Which of the following best describes Erin Merryn?A.An able college student. | B.A perfect mother. |
C.A lover of cats. | D.An online influencer. |
A.He was appointed to guard the newly born baby. | B.He showed Abby much love and affection. |
C.He shared many interesting stories with Abby. | D.He made great progress in reading. |
A.Erin Merryn. | B.The Old Lady. | C.Bailey. | D.Abby. |
A.No Ordinary Cat. | B.A Wonderful World. |
C.Importance of Protecting Animals. | D.Love from Animals. |
【推荐2】Sharks have lived in the world’s oceans for millions of years. A shark has a very good sense of smell. It can find small amounts of substances in water, such as blood, body liquids and chemicals produced by animals. These powerful senses help sharks find their food.
Sharks grow slowly. About forty percent of all sharks lay eggs.
People hunt sharks for sport, food, medicine and their skin. Experts say the international market for some kinds of sharks has increased because many parts of a shark are valuable.
Sharks are among the oldest animals on Earth.
A.The others give birth to their young. |
B.Sharks are important for the world’s oceans. |
C.This is a threat to other forms of life in the ocean. |
D.Collectors pay thousands of dollars for the Jaws of a shark. |
E.Sharks are valuable to us and we can make full use of them. |
F.But some sharks are in danger of disappearing from Earth. |
G.Sharks cat fish, other sharks, and plants that live in the ocean. |
【推荐3】The world’s insects are going down the path of extinction,threatening a“catastrophic collapse of nature’s ecosystems”,according to the first global scientific review.More than 40%of insect species are declining and third are endangered,the analysis found.The rate of extinction is eight times faster than that of mammals,birds and reptiles.
“It should be of huge concern to all of us,for insects are at the heart of every food web.They pollinate(授粉)the large majority of plant species,keep the soil healthy,recycle nutrients,control pests,and much more.Love them or 1oathe them,we humans cannot survive without insects,”said Prof Dave Goulson at the University of Sussex in the UK.
The analysis,published in the journal Biological Conservation,says intensive(集约型)agriculture is the main driver of the declines,particularly the heavy use of pesticides.Urbanisation and climate change are also significant factors.
“If insect species losses cannot be stopped,this will have catastrophic consequences for both the planet’s ecosystems and for the survival of mankind.It is very rapid.In 10 years you will have a quarter less,in 50 years only half left and in 100 years you will have none,”said review author Francisco Sánchez-Bayo,at the University of Sydney,Australia.
One of the biggest impacts of insect loss is on many birds,reptiles,amphibians and fish that eat insects.“If this food source is taken away,all these animals starve to death,”he said.Such effects have already been seen in Puerto Rico,where a recent study revealed a 98%fall in ground insects over 35 years.
Matt Shardlow,at the conservation charity Buglife,said:“It is thoughtful to see this evidence that shows the pitiful state of the world’s insect populations.It is increasingly obvious that the planet’s ecology is breaking and there is a need for a strong and global effort to prevent and change these terrible trends.”
1. Why are people worried about the insect decline?A.They are vital to ecosystems. | B.They provide food for pests. |
C.They pollinate all plants. | D.They enrich the soil. |
A.More and more trees. | B.Restrictions on pesticides. |
C.Upgrading agriculture. | D.Friendly environment. |
A.In paragraph 1. | B.In paragraph 2. |
C.In paragraph 3. | D.In paragraph 4. |
A.Humans can survive the punishment of nature |
B.Insect declining is breaking nature’s ecosystems |
C.Nature’s ecosystems are influenced by humans |
D.Insects and animals are dying out in Puerto Rico |
【推荐1】Every few years, there’s a hot new management-strategy that promises to make employees happier, healthier and more productive. To that end we’ve seen the rise of positions like chief happiness officer’ as well as workplace dogs and on-site meditation. But while the employers may have improved the office itself, they have not solved the stress itself: the crushing tide of emails and IMs, which-thanks to the rise of smartphones-can pull us back to work, anytime, anywhere.
Now, in an effort to prevent burnout, a growing number of employers have started to suggest ways in which employees should unplug their connected devices. The automaker, Volkswagen, in collaboration with its union, sets its servers to stop mobile email service for some workers from 30 minutes after quitting time until 30 minutes before starting time.
These measures may sound dramatic and possibly impractical, but there is a data to suggest they are needed. A recent research has suggested that limiting the number of times a day that we check email or work-chat services -- from say 10 or 20 to three or four--can not only reduce stress levels but also increase the overall productivity.
But in order for any solution to succeed, workers have to be willing to regulate their own habits. Yet that is especially tough in a country like the U.S., where, being super-busy, or at least appearing to be super-busy, is a point of pride. Even if more U.S employers were to implement the kinds of limits that Volkswagen do, experts are skeptical that they’d work. “If the social norm is to be on all the time, you don’t want to be the odd one out,” says Angela Leaney, a New Jersey-based marketing consultant, adding that some bosses will think less of employees for not answering emails after work hours, even if they say they won’t.
Moreover, dictating (强制规定) when and how employees should use their connected devices will inevitably hamper many workers. There are plenty of people who do their best work at 3 a. m. In fact, a majority of working adults say that being able to check work email at home makes it easier to get more done; many also said it improved their relationships with their colleagues.
For now, it seems, the best way for employers to foster a fulfilled, productive workforce is to be flexible, both inside and outside the office. One example, although Andy Mon-fried, the CEO and founder of Lotame, a New York-based data management company, says those kinds of time limits wouldn’t work for his business-- it’s too global-- he does give his employees flexibility on when and where they can work. He’s also vigilant (警惕的) about burnout. “I vowed that I would not create a company where people had the Sunday-might blues--the kind where you go to bed sick to your stomach,” he says. “I tell people if that’s happening repeatedly, it’s a sign of work-life imbalance and they should come talk to me.”
1. To stop employees from getting exhausted, employers have begun to ________.A.allow pet dogs in the office |
B.encourage meditation in the workplace |
C.promise to make their staff happier and more productive |
D.advise their staff to disconnect their communication devices |
A.Volkswagen’s policy will also apply to U.S. companies. |
B.Employers will find ways to regulate workers’ working habit. |
C.U.S employers won’t think of contacting employees after work. |
D.U.S experts cast doubt on the feasibility of limiting connected time. |
A.comfort | B.harm |
C.tighten | D.relieve |
A.Employees applaud the way to cut down their connected time. |
B.The "time limits" are considered worldwide but not entirely practical. |
C.Impractical as the measures sound, they will work well for employers. |
D.Flexibility on when and where to work is the best way to avoid burnout. |
【推荐2】Thomas Edison received a patent(专利) for his kinetoscope(电影放映机) on August31, 1887. It was a machine for viewing moving pictures. Edison had hoped to combine his no invention with the phonograph(留声机), which he had invented 10 years earlier. He thought that people would like to watch moving pictures that went along with the sound. He was not able to make them work together. The kinetoscope, however, was a popular attraction by itself. A person looked through small holes in a box-like machine and saw pictures in action. One of the first films made showed a man sneezing.
A problem with this invention was that only one person could view the moving pictures at a time. By 1891, Edison had invented a projector that showed the film on a screen. Many people could watch together.
In 1893, Edison built a motion-picture studio. He made over 300 silent films. Most of them were short. That was because the pictures flashed, or shook a lot. It was hard for people to watch more than 10 minutes at a time.
The first films were mostly of real events. They would show famous people walking somewhere, cars on a street, burning houses, and other news stories. Then comedies and short dramas were made.
Edison’s movie studio closed in 1918. By then other companies were also making films. Better cameras were made. Sound was added. Then color came along. Today, movies are among the most popular forms of entertainment.
1. What do we know about the first kinetoscope?A.It was a machine to play pictures with sound. |
B.It was invented 10 years earlier than phonograph. |
C.Many people were able to see films together with it. |
D.Only one person could see moving pictures with it at a time. |
A.A film player. |
B.An electric lamp. |
C.A programme. |
D.A talking machine. |
A.People didn't like long films. |
B.The film stories were really short. |
C.The film pictures were not very steady. |
D.People could only watch a short time at a time. |
A.The trouble in making films. |
B.The efforts of Edison in the development of films. |
C.Why Edison invented the phonograph. |
D.How Edison improved the kinetoscope. |
【推荐3】Peer pressure is the phenomenon where we tend to get influenced by the lifestyles and the ways of thinking of our peers. Peer pressure can prove beneficial but it is often observed to have negative effects on society.
We tend to get influenced by the lifestyles of our peer group. The changing ways of life of our peers often force us to change our ways of looking at life and leading it. It's a human tendency to do what the crowd does.
When you do not like a particular idea, it is obvious that you won't like to follow it. For sure, you won't like to go that way. But it is your peer group that may force you to do something you hate. In such cases, there are chances that you won't do well in those things.
There are many teenagers who experience great pressure from their peer group that forces them to take to drinking.
A.Peer pressure is not always bad. |
B.So what is negative peer pressure? |
C.Peer pressure can lead to a loss of individuality. |
D.Things you do not enjoy doing cannot bring you success. |
E.However, following your peers blindly leaves a negative effect on your life. |
F.They may even enjoy something as harmful as drug use because of peer pressure. |
G.However, the good effect of the crowd is greater during your teen years. |
【推荐1】Foxes and farmers have never got on well. These small dog-like animals have long been accused of killing farm animals. They are officially considered as harmful and farmers try to keep their numbers down by shooting or poisoning them.
Farmers can also call on the services of their local hunt to control the fox population. Hunting consists of running after a fox across the countryside, with a group of specially trained dogs, followed by men and women riding horses. When the dogs eventually catch the fox they kill it or a hunter shoots it.
People who take part in hunting think of it as a sport; they wear a special uniform of red coats and white trousers, and follow strict principles of behavior. But owning a horse and hunting regularly is expensive, so most hunters are wealthy.
It is estimated that up to 100,000 people watch or take part in fox hunting. But over the last couple of decades the number of people against fox hunting, because they think it is cruel, has risen sharply. Nowadays it is rare for a hunt to take place without some kind of conflict between hunters and hunt saboteurs (阻拦者). Sometimes these incidents lead to violence, but mostly saboteurs interfere with the hunt by misleading riders and disturbing the trail of the fox’s smell, which the dogs follow.
Noisy conflicts between hunters and saboteurs have become so common that they are almost as much a part of hunting as the pursuit of foxes itself. But this year supporters of fox hunting face a bigger threat to their sport. A Labour Party Member of the Parliament, Mike Foster, is trying to get Parliament to pass a new law which will make the hunting of wild animals with dogs illegal. If the law is passed, wild animals like foxes will be protected under the ban in Britain.
1. Rich people in Britain have been hunting foxes ______.A.to entertain themselves | B.in the interests of farmers |
C.to limit the fox population | D.to show off their wealth |
A.It involves the use of a deadly poison. |
B.It is a costly event which rarely occurs. |
C.The hunters have to go through strict training. |
D.The hunters have set rules to follow. |
A.by using violence | B.by taking legal action |
C.by confusing the fox hunters | D.by demonstrating on the scene |
A.hunting fox with dogs is considered cruel and violent |
B.limiting the fox population is unnecessary |
C.killing foxes with poison is illegal |
D.fox-hunting often leads to conflicts between the poor and the rich |
【推荐2】Robots are famously cold, hard and unfeeling, so they may not be the greatest audience for your favourite knock-knock joke. However, scientists in Japan are looking to change their reputation, by teaching them when and how to laugh using artificial intelligence.
The researchers created an android, named “Erica”, which they trained to detect laughter in conversation, then decide whether to laugh in response and what kind of laughter would be best. Her conversations and chuckles (轻笑) were then watched by volunteers, who decided whether her responses demonstrated empathy and human-likeness.
Lead author Dr Koji Inoue, from Kyoto University, said: “We think that one of the important functions of conversational AI is empathy. Conversation is, of course, multi-modal, not just responding correctly. So we decided that one way a robot can empathize (产生共鸣) with users is to share their laughter, which you cannot do with a text-based chatbot (聊天机器)”
The aim of the research was to develop an AI that can understand slight differences in humour. While it would be possible to train an algorithm (计算程序) to recognize laughter, or read out a joke, these abilities would not enable it to copy natural conversation.
The researchers first developed a “shared-laughter” model for Erica to run, which would allow her to respond to human laughter as an empathetic response. This model asks three questions in order for the robot to appropriately respond to a conversational cue. First is “Did the user laugh?”, then “Will Erica laugh in response?” and finally, if she responds yes to both, “Which type of laughter is proper?”. The types of laughter Erica would choose from are a “social laugh”, a polite chuckle to fill conversation when humour is not involved, or a “mirthful laugh” for funny situations.
To teach the AI to use the shared-laughter model effectively, the researchers gathered data by sending the robot speed dating. Erica, who was remotely operated by four female actors, had over 80 dialogues with male university students. The laughter that appeared during the conversations was then classified into solo, social or mirthful. This was then used to train Erica’s neural network how to decide when it is appropriate to laugh, and which type of laughter to use.
1. What the scientists in Japan exactly want to do in this research?A.To change the robot’s reputation. |
B.To use artificial intelligence. |
C.To teach the robot when and how to laugh. |
D.To create a new android. |
A.Empathy is the most important function of conversational AI. |
B.Sharing their laughter can make a robot empathize with users. |
C.Multi-modal is one of the characteristics of conversation. |
D.Conversation only needs to respond correctly. |
A.A text-based chatbot can have sympathy for others. |
B.An algorithm can not recognise laughter, and read out a joke. |
C.Erica can learn to laugh from three questions. |
D.The actors and students can give examples of laugh. |
A.Scientists try to teach a robot when it is appropriate to laugh. |
B.Robots know how to laugh after learning and training. |
C.A new trend is coming as artificial intelligence learns to laugh. |
D.Researchers try to teach a robot how to make a conversation. |
【推荐3】For many years, humans have looked up at the collection of stars and planets shining in the night sky that make up the Galaxy (银河系). However, the Galaxy is now being observed for the first time in a new way. They have produced an image of the Galaxy not based on light. Instead, the image is based on neutrinos (中微子).
Scientists discovered the high-energy neutrinos in ice deep be low Antarctica’s surface over a period of 10 years at the Ice Cube Neutrino Observatory, a research station at the South Pole. They then tracked their source back to locations in the Galaxy. It is the first time these small pieces of matter have been observed arising from the Galaxy. This observation of the Galaxy is different from what can be seen with our own eyes, or even instruments that measure other electronic (电磁能的) sources. The image does not contain stars or planets or other things observable because of their light. Rather they are observable because of the neutrinos originating in the Galaxy.
“This observation is groundbreaking. It established the Galaxy as a neutrino source. Every future work will refer to this observation,” said Taboada, the spokesperson for the Ice Cube research.
Neutrinos are electrically neutral created in nuclear processes. They are not affected by even the strongest magnetic field and rarely interact with matter. As neutrinos travel through space, they pass clear through everything: matter like stars, planets, and even people, just as light goes without stopping through glass. Neutrinos are elementary units, meaning they are not made up of anything smaller.
Many parts of the universe are impossible to observe using light alone. The ability to use neutrinos in astronomy makes for a more complete examination. The direction from which neutrinos arrive points directly to their original source, so the researchers used machine learning to help determine which neutrinos originated in the Galaxy and which originated elsewhere. But how the neutrinos originated is up for debate. This is now the key question.
1. How were neutrinos found?A.By observing the Galaxy. | B.By examining nuclear processes. |
C.By studying ice at the South Pole. | D.By measuring electromagnetic sources. |
A.Pioneering. | B.Changeable. | C.Predictable. | D.Confusing. |
A.They can’t be further divided. |
B.It’s clear how they originated now. |
C.They will be disturbed by magnetic field. |
D.The Galaxy is the final source of neutrinos, |
A.The Origin of Neutrinos | B.The Image of the Galaxy |
C.A Secret beneath the South Pole | D.A New Way to Look at the Galaxy |