A few weeks ago, scientists at Ukraine's Vernadsky Research Base in Antarctica found their usually white surrounds were covered in a shocking blood-red. For such a mess, the culprits behind this horrible scene are tiny.
“Our scientists have identified them under a microscope as Chlamydomonasnivalis(雪地衣藻),” said the National Antarctic Scientific Centre of Ukraine in a Facebook post.
These green algae, a type of seaweed, are common in all icy and snowy regions of Earth, from the Arctic to high mountain regions. They lie still during the freezing winter, but once the sunlight warms enough to soften their world, the algae awake, making use of the melt water and sunlight to rapidly bloom.
“The algae need liquid water in order to bloom,” University of Leeds microbiologist Steffi Lutz told Gizmodo in 2016. “The algal blooms contribute to climate change,” the center stated.
A study in 2016 showed that snow algal blooms can decrease the amount of light reflected from the snow by up to 13 percent across one melt season in the Arctic. “This will surely result in higher melt rates,” the researchers wrote.
In 2017 environmental scientists calculated that microbial communities contributed to over a sixth of the snowmelt where they were present in Alaskan ice fields. Their experiments showed that areas with more melt water led to the growth of 50 percent more algae and places with more algae melted further.
This Antarctic summer has certainly seen a lot more melt water than usual. Temperature records keep changing, leading to rapid melting previously only seen in the Northern Hemisphere.
1. What does the underlined word “culprits” in Paragraph 1 mean?| A．Risks. | B．Chances. |
| C．Effects. | D．Criminals. |
| A．They can be found anywhere. | B．They are sensitive to temperature. |
| C．They grow slower than before. | D．They survive only one melt season. |
| A．Ice and snow will soon disappear in the Antarctic. |
| B．Microbial communities bring about extreme weathers. |
| C．The Southern Hemisphere is warmer than the other parts. |
| D．Climate change and algae growth interact with each other. |
| A．Why Snow Turned Blood-red. | B．How Algae Began in the Arctic. |
| C．Why Climate Changes Greatly. | D．How the Snow Reflects Sunlight. |
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【推荐1】Humans are not the animal kingdom’s only fashionistas (时尚达人). Tits (山雀) can be fashion-victims, too. A study published, by Sonja Wild and Lucy Aplin of the Max Planck Institute for Behavioral Biology shows that, given the chance, they decorate their nests with this season’s must-have color.
Dr Wild and Dr Aplin were following up work published in 1934 by Henry Smith Williams, an American naturalist. He noticed that when he put various colored balls of yarn (纱线) out in his garden, almost always one and only one became popular that season for incorporation into local birds’ nests. But which particular color was favored varied from season to season. This suggested that the color chosen by one of the early birds was spotted and copied by others.
The birds chosen by Dr Wild and Dr Aplin were part of a well-monitored population of blue, great and marsh tits in a wood near the institute. Most birds in this wood carry transponders (发射机应答器) fitted to them after their capture in mist nets. That allows the institute’s researchers to keep track of a vast number of individuals by logging their arrival at food dispensers (投放器) placed throughout the wood.
One day in March 2021 Dr Wild, Dr Aplin and their collaborators employed five dispensers loaded with wool rather than food. Each contained threads of two colors — either orange and pink or blue and purple — but all were set to dispense only one of these. This remained so until at least one local nest was seen to include wool from a dispenser. At that moment, the other color was made available, too.
Of 68 tits’ nests built that season in the experimental areas, 26 included wool from a dispenser. Of these, 18 were constructed after both colors had become available from all dispensers. Even so, 10 of that 18 included only the color of wool first chosen by a nest builder.
Tits, then, do seem to be “on trend” when it comes to nest-building materials. Why that should happen remains unknown. Dr Wild and Dr Aplin suspect the trendsetters are older birds, and that evolution favors younger ones copying their elders since those elders have evidently survived what fortune has to throw at a tit.
1. What can we learn from Williams’ work published in 1934?| A．Local birds like to make their nests colorful. |
| B．Local birds can adapt well to seasonal changes. |
| C．Bright colors are always favored by local birds. |
| D．Early birds can lead the way in their color choices. |
| A．They are well equipped to be tracked. | B．Their nests come in a variety of colors. |
| C．Their population is gradually declining. | D．They are good at finding foods in woods. |
| A．To provide two colors at different times. |
| B．To attract more birds by offering different colors. |
| C．To mix different colors for the birds to choose from. |
| D．To test the effect of different colors on the feeding of tits. |
| A．Younger birds have a good sense of fashion. |
| B．Older birds have an appeal in setting the fashion. |
| C．Older birds force younger ones to follow in their steps. |
| D．Younger birds can influence older birds’ choice of color. |
【推荐2】Whaling was once a major industry worldwide. And by the 1940s, more than 30,000 whales were being caught every yean Oil from whales was widely used. In order to make possible the orderly development of the global whaling industry, the international Whaling Commission (IWC) was formed in 1946.
However, in 1986, the IWC voted (投票) for a ban on whaling. The biggest concern was the huge fall in whale populations across the planet. Indeed many people say the ban came too late and that commercial whaling has already driven many species close to extinction. According to Greenpeace, blue whales are less than 1% of their original number in the Antarctic while Sei Whales and Fin Whales are also listed as “endangered species”.
There are many other good reasons to oppose whaling. Whales are extremely intelligent creatures. They have social networks very similar to those of humans, and scientists have recently discovered that whales have brain cells only previously found in humans and great apes (猿) . On top of that, whaling is also a cruel industry. Whales are often caught using explosive harpoons (鱼叉). In some cases, when the harpoon doesn't bit its target properly, whales can take minutes or sometimes hours to die.
Despite this, some countries continue to hunt whales. And currently Japan hunts more than 1,000 whales a year-all of them part of a supposed “scientific research” programme. Many people argue that this “research” is nothing more than a front of commercial whaling — the meat that is left over after samples are taken is sold.
At present, the world is fairly divided on the issue with Iceland, Japan and Norway on the pro-whaling side and the US, Australia, New Zealand and the EU on the anti-whaling side. Asked recently bow difficult his job was on a scale (等级) of one to ten, Cristian Maquieira, the chairman of the IWC said, “About a twelve!”
1. What is the main reason for the IWC, voting for a ban on whaling?| A．Many whale species died out. |
| B．Whales are highly intelligent creatures. |
| C．The number of whales dropped sharply. |
| D．Whales suffer great pain when being caught. |
| A．Protest. | B．Maintain. | C．Permit. | D．Improve. |
| A．To ensure food supply. | B．To do scientific research. |
| C．To protect other species. | D．To make economic profit. |
| A．The IWC will make great efforts to promote the ban. |
| B．It is rather challenging for the IWC to carry out the ban. |
| C．There is still much room for the IWC to improve its work. |
| D．The IWC is confident of stopping all countries hunting whales. |
【推荐3】Happiness of dolphins
For those of us who’ve ever been to a marine(海洋的) park, the best part was probably seeing the beautiful and friendly dolphins.
And the luckier people among us may have even had the chance to swim with these amazing creatures.
At the same time, however, we can’t help but think that these animals would be happier in the wild, rather than be forced to perform for humans in captivity(囚禁).
According to a recent study though, we needn’t think like that.
The study, which was published in the journal Applied Animal Behavior Science, was led by scientist Isabella Clegg, who carried out her research at a dolphinarium(海豚馆) in France.
As the first of its kind, the study’s aim was to look at captivity from the animals’ point of view, according to BBC News.
Over the course of three years, Clegg and her team put together a series of experiments to figure out how captive dolphins felt about their lives.
“We wanted to find out what activities in captivity they like most,” she told BBC news.
There were three kinds of experiment: one in which the dolphins were left alone, one in which toys were added to their pool, and one in which a human played with the dolphins.
It was found that of the three types of experiment, the dolphins seemed to enjoy playing with humans the most.
“Their leaping(跳跃) from the water during training, and their curious approaches to the edge(边沿) of the pool appeared to be enthusiastic(热情的).” wrote BBC News science correspondents Victoria Gill.
However, this doesn’t necessarily mean dolphins are happier in captivity than they are in the wild.
According to wildlife and nature platform One Green Planet, being raised in captivity could actually be harmful for dolphins.
“By being born into captivity, they will never learn the skills necessary to survive in the wild. This means that any animal that is born in captivity can never be sent back into the wild,” it wrote on its website.
But while this may be true, at least it seems that captive dolphins still enjoy happy moments with humans.
1. What can we learn about the study on captive dolphins?| A．It was carried out in a dolphinarium in the UK. |
| B．It was the first study on captivity’s influence on animals. |
| C．It compared the behavior of captive dolphins and wild dolphins. |
| D．It studied the feelings of captive dolphins. |
| A．with toys. | B．with humans. |
| C．by themselves. | D．with other sea animals. |
| A．They may not be able to survive in the wild. |
| B．They may be less healthy than wild dolphins. |
| C．They may live an unhappy and lonely life among humans. |
| D．They might be unwilling to return to the wild. |
【推荐1】If job seekers knew companies were using artificial intelligence to fill open positions, would it stop them from applying for the job? The answer, according to a recent study, is yes-sometimes.
The researchers found that in certain instances, like the screening (筛选) of applications, study participants usually accepted some degree of automation. But in other instances, like interviews, the study suggests, automation could discourage job seekers from applying for a position.
Companies contending with recent labour shortages are increasingly turning to AI as away to facilitate and speed up the hiring process. AI can be used in such tasks as screening job applicants for basic qualifications, checking for professional licenses, interviewing candidates and conducting competency assessments.
The new research underlines when using AI in hiring could be counterproductive (事与愿违的). The researchers found that if the job posting said AI was used to both screen applicants and conduct interviews，participants’ intention to apply to the position averaged 2.77 on a six-point scale. If AI was used only for the screening process, participants’ intention to apply averaged 3.73.
In another experiment, the authors also found that study participants saw pros as well as cons (利与弊) in the use of AI in interviewing.
Participants who saw a job posting stating that AI was used to both screen applicants and conduct interviews expected the hiring process to be more consistent in its judgments than those who saw postings with less Al involvement.
On the other hand, participants who were told the hiring would be fully automated tended to believe more than others that they had less agency or voice in the final outcome. Overall, the study results suggest this concern tends to outweigh the appreciation of AI’s lack of bias (偏见) at the interviewing stage.
“A hybrid approach where companies use AI in some tasks but not others may be a way to get the best of both worlds,” says Jenny Wesche, a co-author of the study and a research fellow at the Free University of Berlin. Participants may have been more open to automation earlier in the hiring process because they had little expectation of direct interaction at that stage and could see some benefits from using AI — such as less-biased decisions and the avoidance of problems like nepotism (任人唯亲), she says. But during the later stages, she suggests, applicants expect personal interaction, to give them an opportunity to sell themselves and to learn more about the company.
1. Why do some companies use AI in job application?| A．To deal with the labour shortages. | B．To make sure the fairness. |
| C．To offer applicants more opportunities. | D．To choose excellent employees. |
| A．organization | B．communication |
| C．concern | D．relationship |
| A．it can be less biased. |
| B．it can avoid the problem of nepotism. |
| C．it can facilitate and speed up the hiring process. |
| D．it can give applicants more personal interaction. |
| A．AI will be widely used in job application. |
| B．AI will attract more and more job seekers. |
| C．AI has more pros than cons in the hiring process. |
| D．AI, good or bad, greatly depends on the context where it’s used. |
【推荐2】Race walking shares many fitness benefits with running, research shows, while most likely contributing to fewer injuries. It does, however, have its own problem.
Race walkers are conditioned athletes. The longest track and field event at the Summer Olympics is the 50-kilometer race walk, which is about five miles longer than the marathon. But the sport’s rules require that a race walker’s knees stay straight through most of the leg swing and one foot remain in contact with the ground at all times. It’s this strange form that makes race walking such an attractive activity, however, says Jaclyn Norberg, an assistant professor of exercise science at Salem State University in Salem, Mass.
Like running, race walking is physically demanding, she says. According to most calculations, race walkers moving at a pace of six miles per hour would burn about 800 calories per hour, which is approximately twice as many as they would burn walking, although fewer than running, which would probably burn about 1,0000 or more calories per hour.
However, race walking does not pound the body as much as running does, Dr. Norberg says. According to her research, runners hit the ground with as much as four times their body weight per step, while race walkers, who do not leave the ground, create only about 1.4 times their body weight with each step.
As a result, she says, some of the injuries associated with running, such as runner’s knee, are uncommon among race walkers. But the sport’s strange form does place considerable stress on the ankles and hips, so people with a history of such injuries might want to be cautious in adopting the sport. In fact, anyone wishing to try race walking should probably first consult a coach or experienced racer to learn proper technique, she says. It takes some practice.
1. Why are race walkers conditioned athletes?| A．They must run long distances. |
| B．They have to follow special rules. |
| C．They are qualified for the marathon. |
| D．They are good at swinging their legs. |
| A．It’s less challenging physically. |
| B．It’s more popular at the Olympics. |
| C．It’s less likely to cause knee injuries. |
| D．It’s more effective in body building. |
| A．Doing regular exercises. | B．Having a medical checkup. |
| C．Hiring an experienced coach. | D．Getting experts’ opinions. |
| A．Objective. | B．Doubtful. |
| C．Tolerant. | D．Supportive. |
【推荐3】For nearly every step of his almost 12-mile walk, Darryl Dyer has company. Flocks of crows follow him, signaling each other, because they all know that he’s the guy with the peanuts.
“They know your body type. The way you walk,” Dyer said. “They’ll take their young down and say: ‘You want to get to know this guy. He’s got the food.”
Scientists for years have known that crows have great memories, that they can recognize a human face and behavior, and can pass that information onto their babies.
Nowadays, researchers are trying to understand more about the crow’s brain and behavior, specifically what it does when the birds see one of their own die. They react loudly to the dead, but the reasons aren’t entirely known. Among the guesses is that they are mourning; losing a partner could be a significant moment for the social animals. Crows place sticks and other objects on dead birds—a funeral of sorts.
“Crows have evolved to have these complex social relationships, and they have a big brain,” said Kaeli Swift, who led the study.
How big of a brain? Crows are on par with smart mammals, like dolphins and monkeys, in brain-to-body proportion (比例). They have been known to be problem solvers and are among the few animals recorded to use tools.
In another part of the experiment, using slightly radioactive tracers, researchers measured the brain activity of crows after they were shown a dead bird. The scans showed the section of the hippocampus-the part involved in memory formation-light up at the sight of death. “In that particular situation at least, that crow was learning about a place, or a face, or a situation and associated it with that dead crow,” said Johin Marzluff, the lead researcher.
1. What does Darryl Dyer say about the crows?| A．They have good teamwork. |
| B．They want to get to know him. |
| C．They like peanuts best. |
| D．They are familiar with him. |
| A．Crows behave badly to each other. |
| B．Crows can’t remember things well. |
| C．Crows can acquire information from their parents. |
| D．Crows mourn their partners’ death in a silent way. |
| A．the same as |
| B．different from |
| C．related to |
| D．opposite to |
| A．Crows Are Friends of Humans |
| B．A Big Brain Makes Crows Intelligent |
| C．Crows Can Memorize Things |
| D．Crows Hold-a Funeral for the Dead |
| Position: Home>Book A Trip> Tips for Arriving by Air: 1.According to the Embassy of the People's Republic of China in the French Republic, starting from December 1, 2020, all Chinese and foreign passengers flying from France to China are required to conduct the sampling and testing of a nucleic acid test and an IgM anti-body test at testing institutions in France within 2 days before boarding. They must obtain the certificates of negative results of both tests issued by the organizations to apply for the green health declaration code with the “HS" mark or “HDC" mark from the local Embassy of China in France. Please visit the official Embassy website at http://www.amb-chine.fr/chn/zgzfg/zgsg/lsb/t1835249.htm for further details. To avoid any delay on your trip, please be sure to keep a close eye on the local requirements prior to your flight departure. Thank you for your understanding and support! 2. Starting from November 16,2020,China Eastern Airlines and Shanghai Airlines will suspend transit services of passengers originating from Africa, Argentina, and India passing by a third country to China. 3.Passengers transiting by way of a third country please pay particular attention to the specific visa requirements of the transiting country. Select A Flight  |
| A．Take two nucleic acid tests. |
| B．Visit the official Embassy website. |
| C．Pay attention to the local requirements upon arriving. |
| D．Have the green health declaration code with the "HS" or "HDC" mark. |
| A．They are not allowed to fly to Shanghai. |
| B．They must hold a specific visa to enter China. |
| C．They must first fly to France and then go on flying to Shanghai. |
| D．Shanghai Airline won't fly them if they are not taking a direct flight. |
| A．The one on Sunday. | B．The one on Monday. |
| C．The one on Wednesday. | D．The one on Friday |
【推荐2】Organizers of Paris 2024 have suggested that breakdancing(霹雳舞) should be included as a new sport in the Olympic sports. The committee is pleased with the suggestion as it is in line with its aim of rejuvenating the Olympics. But, what is breakdancing on earth?
Breakdancing is not simply a style of dance. It’s a unique culture with its own history. Popularized by African Americans and US Latinos, breakdancing is an energetic form of dance including stylized footwork and moves such as spinning on the head, hands or knees. It arose in New York City during the late 1960s and early 1970s from martial arts moves. The moves, originally learned as a form of self-defence eventually developed into the complex and athletic moves of today’s breakdancing.
Breakdancing is largely improvisational(即兴的) without standard moves or steps. The key is on energy, movement, creativity and certain danger. The people who perform this style of dance are known as b-boys or b-girls. They are also called breakers.
From those early roots, breakdancing began to add different moves to their routines, such as “pops” and “locks”, which brought a robotic quality to the dance. That style was popularized in the early 1970s by artists of the time. In the 1980s breakdancing reached a greater audience when it was adopted by mainstream artists like Michael Jackson. Jackson’s moonwalk, a step that involved sliding backward and lifting the soles of the feet so that he appeared to be sliding or floating, caused huge excitement among teens of all races.
With the growing popularity over the years, breakdancing has gone from a street phenomenon to one that is accepted by the wider culture.
Breakdancing is universal and it is popular with more than one million b-boys and b-girls in France. We hope the energetic dance is to be in the Olympic Games.
1. Which of the following best describes breakdancing?| A．Unique and defensive. | B．Standard but dangerous. |
| C．Energetic and creative. | D．Improvisational but simple. |
| A．Its features and history. | B．Its birthplace and audience. |
| C．Its changes and culture. | D．Its moves and complexity. |
| A．It took on a robotic look. | B．It caused excitement among teens. |
| C．It involved pops and locks. | D．It was adopted by mainstream artists. |
| A．To popularize breakdancing worldwide. |
| B．To explain what breakdancing is on earth. |
| C．To promote breakdancing to an Olympic sport. |
| D．To introduce the development of breakdancing. |
【推荐3】Scientists can figure out a movie's emotional tone from the gasps(喘气) of its audience. These gases could point the way to a subtle(微妙的，精细的) form of human communication, a new study suggests.
"When you see a movie, you can hear the music and see the pictures. However, you don't realize here are chemical signals in the air. And they, too, could be affecting you, says Williams, who led the study. As an atmospheric chemist, he studies the chemical makeup of the air around us.
Williams started out measuring the air in a soccer stadium. He noticed that levels of carbon dioxide and other gases changed wildly whenever the crowd cheered. That got him wondering -- Could the gases people breathe out be influenced by emotions?
To find out, he went to the movies.
Williams and his coworkers measured air samples collected over six weeks in two movie theaters. Overall, 9,500 movie goers watched 16 films. They included a mix of comedy, romance, action and horror films. Among them were The Hunger Games, Catching Fire, Carrie, and Walking with Dinosaurs. The researchers gave scenes from the movies such labels as “suspense(悬疑)”, "laughter" and "crying". Then they looked for hundreds of chemicals in the air that showed up as people were watching particular movie scenes.
And certain scenes had distinct chemical "fingerprints". Scenes that had people laughing or on the edge of their seats were especially distinctive. During screenings of The Hunger Games, levels of carbon dioxide and isoprene got to the highest at two suspenseful moments. Because isoprene is related to muscle movement, the researchers think tense movie moments likely led to its spikes(尖峰). Williams and his colleagues think the increase in carbon dioxide was due to the viewers' increased pulse and breathing rates.
Scientists need more data to make stronger links between human emotions and what's in their breath. But Williams can see potential practical uses. Companies, for instance, could quickly measure the air during tests to see how people feel about new products. He pictures future studies recording other body variables(变数) as well. These might include heart rate and body temperature, for instance. "It's something to find out."
1. What was Williams's purpose of the research?| A．To know more about the makeup of the air. |
| B．To find out how the air changes in a crowded stadium. |
| C．To study how greatly the movies influence people's emotion. |
| D．To see whether people's emotion affects the air they breathe out. |
| A．Each participant watched about 16 films. |
| B．The movies were a mixture of comedy and romance. |
| C．The film scenes were labeled with three main features. |
| D．The samples were taken in two theaters over six weeks. |
| A．Romantic moments. | B．Exciting situations. |
| C．Suspenseful situations. | D．Horrible moments. |
| A．Human emotions are strongly related to the chemicals humans breathe out. |
| B．People's temperature will be measured when they' re watching movies. |
| C．Williams thinks more measures should be taken for practical uses. |
| D．Companies will spend much money testing their new product. |
【推荐1】More than 100 scientists from 25 countries have traveled to faraway places to collect wild crop seeds(种子) in an effort to help battle climate change.
The scientists, who have been compared to the heroes of the “Indiana Jones” movies, traveled on foot, four-wheeled vehicles(交通工具), boats, horses and even elephants to reach faraway areas. They faced extreme heat,dust, and danger from wild animals. At last, they collected 4, 644 seeds of 371 wild relatives of 28 world crops, many of which are said to be endangered.
The Crop Trust, an organization that works to save different kinds of crops, is directing the project. The group is working in partnership with Britain's Royal Botanic Gardens and Millennium Seed Bank. Additional financial support comes from Norway. The project is believed to be the largest organized international effort yet to collect and protect crops' wild relatives.Hannes Dempewolf is a scientist and the head at the Crop Trust. He said“What these seed collectors went through in the field resembles scenes from an Indiana Jones movie.”
Some crops are threatened because of destruction of forests, climate change and expanded cities. The newly-found wild seeds have developed so plants can grow in extreme temperatures, poor soils, and even in low rainfall areas.
A United Nations report says that food production is at risk because of a shortage of rain and other weather extremes connected to climate change. The U.N. Food and Agriculture Organization says that the number of plant species is quickly decreasing and people are depending on fewer species for food. Those wild seeds could be important in feeding a growing human population in some areas and offer a largely unused source of diversity(多样性) to crops.
1. What does the second paragraph show?| A．Collecting seeds is not an easy job. |
| B．The scientists’ story is made into a movie. |
| C．The wild seeds are in danger of extinction. |
| D．The scientists can choose from many vehicles. |
| A．Depends on. | B．Looks like. |
| C．Turns out. | D．Refers to. |
| A．They can increase green areas. | B．They can provide more nutrients |
| C．They can survive bad conditions. | D．They can improve existent crop seeds. |
| A．Bringing more plant species to the world. |
| B．Helping farmers improve their farming skills. |
| C．Knowing about the worlds farming practices. |
| D．Helping battle climate change. |
【推荐2】I must have looked deep in thought, or as deep in thought as an 11-year-old man can, when my grandmother glanced up from her weeding to ask, "You have something on your mind, don't you?"
"Yes, I was thinking that someday I want to be an Olympic speed skating champion like my hero, Eric Heiden, I want to be a doctor like my parents and I want to help children in Africa."
I immediately knew I had confided in the right person when a knowing smile broke across her face. "Johann, of course! You can do anything you want to do!" she said simply. And with my grandmother's support, I set out to pursue my passions.
14 years later, I was well ready to take hold of my first dream: becoming an Olympic champion. The Olympics in 1994 were in my home country, Norway. As I entered the Olympic stadium, I wasn't the best athlete, and many had doubts about my ability to perform well. But I had something special working for me. I had a woman in the first row who believed in me following my passions just as much as I did. For the first time ever, my grandmother was going to see me skate.
It happened. Breaking a world record, I won the gold.
As I stood on the podium(领奖台) that I had dreamed about my entire life, a curious question popped into my head. Why me? Why did I win, given all the other incredible competitors out there? The reason had to be more than a grandmother who shared a belief in her grandson's dream. The question led me to only one answer: because I wanted to make a difference in the world, and with all the media attention on my success, I could.
I immediately knew what that difference had to be: hope in the lives of the children in Africa. Six months earlier, I'd been invited to Eritrea as an ambassador for Olympic Aid.
1. When the author spoke out what was on his mind, his grandmother______.| A．laughed at him | B．supported him |
| C．had no confidence in him | D．felt quite surprised |
| A．20 | B．22 |
| C．25 | D．28 |
| A．His efforts in helping the African children. |
| B．His hard training in preparing for the next Olympics. |
| C．His successes at other Olympic games. |
| D．His grandmother’s attitude towards him. |
| A．a young boy who had many dreams |
| B．the encouragement from a grandmother |
| C．a sportsman who realized his first dream of helping African children |
| D．an Olympic hero who made a difference in the world |
【推荐3】China’s largest search engine Baidu has said it will make its latest artificial intelligence (AI) technology accessible to developers and businesses as part of the company’s latest move into AI, big data and cloud computing.
AI solution “Tianzhi” was launched at a cloud-computing summit held in Beijing Wednesday. It includes services in three fields: sensing technology, such as image and voice processing, machine learning, and deep learning, an advanced form of machine learning, said Zhang Yaqin, CEO of the Nasdaq-listed company, at the summit.
Developers can access facial or voice recognition, algorithms (演算法) for data analysis and projections, and deep learning applications, Zhang said, adding that the technology could help users innovate in their sectors.
“With more devices connected to the cloud, enterprises will use cloud computing and AI more frequently,” said Wu Hequan, an academician at the Chinese Academy of Engineering, “Open AI technology can play a bigger role.”
The company also revealed a plan to invest 10 billion yuan (1.45 billion U.S. dollars) in cloud computing in the next five years and establish an innovation center, which will serve 10 million enterprises.
1. What is the main idea of paragraph one?| A．Baidu will further develop its latest AI technology. |
| B．Baidu has attracted developers’ and businesses’ attention. |
| C．Users will be able to access Baidu’s latest AI technology. |
| D．A company will move to AI, big data and cloud computing. |
| A．sensing technology |
| B．voice processing |
| C．machine learning |
| D．deep learning |
| A．It’s important for AI technology to be open. |
| B．AI technology is more important than the cloud. |
| C．People aren’t aware of the importance of AI technology. |
| D．Enterprises will hardly benefit from open AI technology. |
| A．Reveal a plan to invest in cloud computing. |
| B．Invest 10 billion yuan to serve enterprises. |
| C．Get invested from enterprises in the next five years. |
| D．Invest in computing and build an innovation center. |
