【推荐1】Microplastics are everywhere in our environment. It's hardly surprising that the tiny fragments have also been found in humans. A new study shows that Americans are consuming as many as 121,000 particles each year.

Measuring 50 to 500 microns in length, microplastics come from a variety of sources, including large plastics that break down into smaller and smaller pieces. Therefore, much remains unknown about the common existence of these materials within the human body, as well as their impact on human health.

Hoping to fill in some of these gaps, a research team led by Kieran Cox, a PhD candidate at the University of Victoria, looked at 26 papers assessing the amount of microplastics in commonly consumed food items, among which are seafood, sugars, salts, honey, alcohol and water. The team also evaluated the potential consumption of microplastics through inhalation （吸入）using previously reported data on microplastic concentrations in the air and the Environmental Protection Agency's reported respiration rates. Based on these data, the researchers calculated that our annual consumption of microplastics via food and drink ranges from 39,000 to 52,000 particles. When microplastics taken in through inhalation are taken into account, the range jumps to between 74,000 and 121,000 particles per year.

The authors of the study found that people who drink exclusively from plastic water bottles absorb an additional 90,000 microplastics each year, compared to 4,000 among those who only consume tap water. "This shows that small decisions, over the course of a year, really matter and have an impact." Cox says. The new study, according to its authors, was the first to investigate "the accumulative human exposure" to microplastics. But in all likelihood, the research tells only a small part of the entire story. Collectively, the food and drink that the researchers analyzed represent 15 percent of Americans' caloric intake. The team could not account for food groups like fruits, vegetables and grains because there simply is not enough data on their microplastic content.

For those worried about microplastic consumption, cutting down bottled water is a good place to start. But to the heart of the problem, we have to stop producing and using so much plastic.

1. What makes it difficult to know microplastics commonly exist in the human body?

A．The quality.	B．The quantity.
C．The shape.	D．The size.

2. How did Kieran Cox's team calculate the potential consumption of microplastics?

A．By studying papers.	B．By comparing the impacts.
C．By analyzing the data.	D．By conducting experiments.

3. Which of the following is true according to the text?

A．Drinking less plastic bottled water helps to take in fewer microplastics.

B．The study is among the earliest to investigate human exposure to microplastics.

C．Cox's team gained comprehensive information of microplastics taken in by humans.

D．People consume 74,000 to 121,000 particles of microplastics per year from food and drink.

4. What is the best title for the text?

A．The Potential Problems of Microplastics

B．Microplastics Coming From Various Sources

C．Microplastics Found Within Human Bodies

D．The Impact of Microplastics on Human Health

【推荐3】It is widely accepted that being overweight definitely poses a danger to our health. According to a new study, obesity may even damage the brain’s ability to recognize the sensation of fullness and be satisfied after eating fats and sugars.

Further, those brain changes may last even after people considered medically obese lose a significant amount of weight — possibly explaining why many people often regain the pounds they lose.

The study, published Monday in Nature Metabolism, was a controlled clinical trial in which 30 people considered to be medically obese and 30 people of normal weight were fed sugar carbohydrates (glucose), fats (lipids) or water (as a control). Each group of nutrients was fed directly into the stomach via a feeding tube on separate days.

The night before the testing, all 60 study participants had the same meal for dinner at home and did not eat again until the feeding tube was in place the next morning. As either sugars or fats entered the stomach via the tube, researchers used functional magnetic resonance(磁共振) imaging and single-photon emission computed tomography(断层扫描技术) to capture the brain’s response over 30 minutes.

In people with normal weight, the study found brain signals in the striatum(纹状体) slowed when either sugars or fats were put into the digestive system — evidence that the brain recognized the body had been fed. At the same time, levels of dopamine rose in those at normal weight, signaling that the reward centers of the brain were also activated. However, when the same nutrients were given via feeding tube to people considered medically obese, brain activity did not slow, and dopamine levels did not rise.

Next, the study asked people with obesity to lose 10% of their body weight within three months — an amount of weight known to improve blood sugars, reset metabolism and boost overall health.

Tests were repeated as before — with surprising results. Losing weight did not reset the brain in people with obesity.

Much more research is needed to fully understand what obesity does to the brain, and if that is triggered by the fat tissue itself, the types of food eaten, or other environmental and genetic factors.

1. What aspects did the researchers mainly focus on in the research?

A．Blood sugars and metabolism.	B．Diet and environmental factors.
C．Nutrients and the digestive system.	D．Brain activities and dopamine levels.

2. What are the correct procedures of the study?
①Providing participants with the same nutrients separately.
②Classifying participants in different groups by weight.
③Repeating the test on those who lost required weight.
④Detecting the brain’s reaction of the participants.

A．①④③②	B．④①②③
C．②①④③	D．②①③④

3. What can be inferred about the study?

A．Weight loss had no impact on the brain’s response to food.

B．The level of dopamine was closely related to people’s brain activity.

C．Nutrients taken by participants affected their digestive system rather than brain activity.

D．The sum of dopamine released varied slightly among participants with different weights.

4. What is the most suitable title for the article?

A．Effective Strategies for Weight Loss in Obesity

B．The Persistent Effects of Obesity on the Brain

C．Exploring the Brain’s Response to Sugars and Fats

D．How Obesity Harms the Brain’s Fullness Sensation

【推荐1】Today’s journalists face modern challenges. Online media platforms are springing up. And the lowly newspaper — and its reporters — are fighting money, tech, and distrust issues. Journalism students and teachers must emphasize new skills to keep their profession alive.

A trustworthy press helps inform people and monitor all levels of government. That is essential to a nation. Yet this useful establishment is growing increasingly unpopular. According to the University of North Carolina (UNC), newsroom jobs across the Country are fewer than half what they were 10 years ago. And on many college campuses, the news about the news is bleak too.

Take the Syracuse, New York, student-run newspaper The Daily Orange: It isn’t daily anymore. The paper prints just three times each week. Next year, The Diamondback of the University of Maryland will be online only. Half the newspapers that still exist on paper say they don’t print as many copies. And UNC’s The Daily Tar Heel has cut staff pay and rented cheaper offices to make is budget.

Considering the problems in journalism, it’s surprising that the enrollment (注册人数) in college journalism programs is up. The Daily Orange managing editor Catherine Leffert calls the layoffs and cutbacks disheartening. “But what keeps me wanting to be a journalist is seeing the effect that The Daily Orange has,” he says.

But journalism educators wonder, “Are we preparing young people for a dying industry?” Years ago, journalism graduates took low-level reporter jobs at newspapers or television stations. That sill happens. But today’s jobs more often involve digital editing, social media production, and video streaming. Some universities are taking action. The University of Florida offers a sports media program. Several schools highlight statistics-driven data journalism.

The news isn’t all bad. Journalism professor Kathleen Culver says, “When I look at 18-and 20-year-olds in journalism and see what they want to do, I’m optimistic.” Maddy Arrowood is the student editor of The Daily Tar Heel. She says her experience makes her more interested in a journalism career, not less. Her optimism “comes from knowing that people still need news. They still need information.”

1. What does the underlined word “bleak” in paragraph 2 mean?

A．Useless.

B．Interesting.

C．Hopeless.

D．Encouraging.

2. How do some universities respond to today’s journalism?

A．They reduce student enrollment.

B．They offer students specialized programs.

C．They prepare students for low-level reporter jobs.

D．They encourage students to run their own newspaper.

3. Why is Maddy Arrowood mentioned in the last paragraph?

A．To prove the potential of a career in journalism.

B．To show people’s positive attitudes to journalists.

C．To show the popularity of The Daily Tar Heel.

D．To prove people’s thirst for the latest news.

4. What might be the best title for the text?

A．Does journalism have a future?	B．Are journalists still influential today?
C．What is journalism?	D．What does a journalist do?

【推荐2】All animals—from humans to birds，worms and crocodiles—sleep，however，not all species sleep alike. Scientists have long puzzled over which aspects are truly fundamental. Now a new study on lizards(蜥蜴)suggests that sleep states once thought to occur only in mammals and birds have much older evolutionary origins.

Scientists had long doubted that birds and mammals are the only vertebrates(脊椎动物)to experience rapid eye movement(REM)，a sleep state in which the body is mostly immobile but the brain is overworking. During REM sleep，the brain produces high-frequency waves of electrical activity and the eyes turn suddenly from time to time. In humans，REM is closely linked to dreaming. REM is a pattern of slow-wave sleep，a state in which brain activity weakens and the waves become more consistent. This slower state is widely thought to be important to memory formation and storage.

“But scientists who looked for signs of REM and slow-wave sleep in reptiles(爬行动物) have had‘confusing’results，”says Gilles Laurent，a neuroscientist at the Max Planck Institute for Brain Research in Frankfurt，Germany. So he and his colleagues had planned to examine how the lizards—a common pet in Germany use visual information to chase treats. Using camera，the team found that the sleeping lizards’eyes twitched during the REM-like stage，just like other animals. They also found a very familiar pattern within the slower phase of the lizards’brain waves. Some scientists believe these waves help transform new information into memories by replaying past events quickly.

Although more studies are still needed to determine whether the function of these brain wave patterns is the same across species，the results suggest that these REM and slow-wave sleep patterns could date all the way back to the common ancestor of reptiles，birds，and mammals.

1. What does paragraph 2 mainly talk about?

A．The origin of human dream.

B．The definition and effect of REM.

C．The features and course of memory.

D．The advantages and disadvantages of REM.

2. Which of the following can best replace the underlined word“twitched”in paragraph 3 ?

A．opened wide	B．moved quickly
C．stayed closed	D．kept still

3. How does the lizards’brain waves turn information into memories according to some scienfists?

A．By increasing their frequency slowly.

B．By changing their pattern occasionally.

C．By playing back the past events quickly.

D．By connecting visual information effectively.

4. What can we infer from the last paragraph?

A．The function of the brain wave is the same.

B．All the animals have the common ancestor.

C．The sleep pattern of all the animals is the same.

D．The study about sleep pattern has a long way to go.

【推荐1】Why do people undertake volunteer work and what keeps their interest in the work?

Let’s begin with the question of why people volunteer. Researchers have identified several factors that motivate people to get involved. For example, people volunteer to express personal values related to unselfishness, to expand their range of experiences, and to strengthen social relationships. If volunteer positions do not meet these needs, people may not wish to participate. To select volunteers, you may need to understand the motivations of the people you wish to attract.

People also volunteer because they are required to do so. To increase levels of community service, some schools have launched compulsory volunteer programs. Unfortunately, these programs can shift people’s wish of participation from an internal factor to an external factor. When that happens, people become less likely to volunteer in the future. People must be sensitive to this possibility when they make volunteer activities a must.

Once people begin to volunteer, what leads them-to remain in their positions over time? To answer this question, researchers have conducted follow-up studies in which they track volunteers over time. For instance, one study followed 238 volunteers in Florida over a year. One of the most important factors that influenced their satisfaction as volunteers was the amount of suffering they experienced in their volunteer positions. Although this result may not surprise you, it leads to important practical advice. The researchers note that attention should be given to “training methods that would prepare volunteers for troublesome situations or provide them with strategies for coping with the problem they do experience”.

Another study of 302 volunteers at hospitals in Chicago focused on individual differences in the degree to which people view “volunteer” as an important social role. It was assumed that those people for whom the role of volunteer was most part of their personal identity would also be most likely to continue volunteer work. Participants indicated the degree to which the social role mattered by responding to statements such as “Volunteering in hospital is an important part of who I am.” Consistent with the researchers’ expectations, they found a positive correlation (正相关) between the strength of role identity and the length of time people continued to volunteer. These results, once again, result in concrete advice: “Once an individual begins volunteering, continued efforts might focus on developing a volunteer role identity... Items like T-shirts that allow volunteers to be recognized publicly for their contributions can help strengthen role identity.”

1. People volunteer mainly out of ________.

A．school requirements	B．social expectations
C．financial rewards	D．internal needs

2. What does the author want to tell us in the third paragraph?

A．People who participate in volunteer programs in schools are sensitive.

B．External factors are more important than internal factors in volunteer work.

C．Being required to be volunteers may make people reluctant to do volunteer work.

D．Volunteer programs in school can encourage people to do more volunteer work in future.

3. What can we learn from the Florida study?

A．Follow-up studies should last-for one year.

B．Volunteers should get mentally prepared.

C．Strategy training is a must in research.

D．Volunteers are provided with concrete advice.

4. What is most likely to motivate volunteers to continue their work?

A．Individual differences in role identity.

B．Practical advice from researchers.

C．Role identity as a volunteer.

D．Publicly identifiable volunteer T-shirts.

【推荐2】Alzheimer's AI

An estimated 5.7 million people in the U.S. have Alzheimer's disease-the most common type of dementia(痴呆）－and that number is expected to more than double by 2050. Early diagnosis is crucial for patients to benefit from the few therapies available. But no scans can deliver a conclusive diagnosis while a person is alive; instead doctors have to conduct numerous and complicated clinical and neuropsychological tests.So there is growing interest in developing artificial intelligence to identify Alzheimer's based on brain imaging.

Researchers at the University of California,San Francisco, have now successfully trained an AI algorithm(算法）to recognize one of the early signs of Alzheimer's-a reduction in the brain's glucose（葡萄糖）consumption-in positron emission tomography (PET) imaging.

The algorithm accurately predicted an eventual Alzheimer's diagnosis in nearly all the test cases, according to the study. In PET imaging, a very small amount of a radioactive compound are injected into the body, producing three-dimensional images of metabolism(新陈代谢）,circulation and other cellular activities. PET is well suited for an AI diagnostic tool because Alzheimer's leads to subtle changes in the brain's metabolism that begin years before neural(神经的） tissue starts to go downhill, says study co-author Jae Ho Sohn,a radiologist at UCSF. These changes are "very hard for radiologists to pick up,"he notes.

The algorithm was trained and tested on 2,100 PET brain images from about 1,000 people 55 years and older. The images came from a 12-year study that tracked people who would ultimately be diagnosed with Alzheimer's, as well as those with mild memory declines and healthy control participants. The algorithm was trained on 90 percent of the data and tested on the remaining 10 percent. It was then retested on a second, independent data set from 40 patients monitored for 10 years. The algorithm was highly sensitive and was able to recognize 81 percent of the patients in the first test group and 100 percent in the second who would be diagnosed with Alzheimer's six years later, on average. The findings were published in February in Radiology.

The algorithm is based on "deep learning ,a machine-learning technique that uses artificial neural networks programmed to learn from examples. "This is one of the first promising,preliminary(初步的） applications of deep learning to the diagnosis of Alzheimer's," says Christian Salvatore, a physicist at Italy's National Research Council, who was not involved in the study. “The model performs very well when identifying patients with mild or late diagnoses", he says, “but catching it in the earliest stages remains one of the most critical open issues in this field."

1. People are increasingly interested in using AI to identify Alzheimer's because______

A．the number of people suffering from dementia is more than doubling

B．diagnostic methods that are both reliable and convenient are in need

C．there are only a limited number of effective therapies for the patients

D．diagnosing Alzheimer's disease through AI is still an unexplored area

2. What can we learn about PET imaging?

A．It recognizes the worsening of the neural tissue.

B．It reduces the glucose consumption in the brain.

C．It changes the pattern of the brain's metabolism.

D．It photographs various kinds of cellular activities.

3. According to Paragraph 4,_________.

A．90% of the people in the study were trained on the algorithm

B．the participants in the study consist of people both young and old

C．81% of the people in the first test group were diagnosed with Alzheimer's

D．the algorithm managed to recognize all the patients in the second test group

4. What can be inferred from Paragraph 5?

A．The algorithm serves as a promising treatment of Alzheimer's.

B．Deep learning has been widely applied in diagnosing Alzheimer's.

C．To detect Alzheimer's in its earliest stages calls for more exploration.

D．Whether to use the model to detect Alzheimer's remains a critical issue.

【推荐3】Scientists studying honeybees in Vietnam have discovered an unusual trick used by Asian honeybees to drive away giant hornets(大黄蜂).

Like bees in much of Asia, these bees were constantly being attacked by hornets. They can target hives(蜂巢) with precision, cutting off the heads of the bees and using younger bees for food. The honeybees there have developed some ways of fighting back. For example, by gathering around the hornets and beating their wings very quickly, the bees can raise the temperature high enough to kill the hornets.

Now scientists found something completely new. After the bees were attacked by giant hornets, the bees began collecting small bits of animal poop(粪便) from many kinds of animals, including pigs, cows and chickens, with their mouths and sticking it near the entrance to the hive. The scientists and beekeepers recorded over 300 giant hornet attacks on the beehives. They learned that the more poop there was near the hive entrance, the less likely the hornets were to attack. The poop also made the hornets 94% less likely to chew on the hive to make the entrance larger — something they have to do to get inside.

When the giant hornets attack a hive, they mark it with a special chemical. To see if the bees were using poop in response to the hornets, the scientists marked a hive with this special chemical, and they found the bees soon began to spot the entrance with poop. The scientists don’t know why the poop works to keep the hornets away. It could be that the poop smell hides the normally sweet smell coming from the hive. It’s also possible that the smell drives them away.

Asian honeybees have developed methods for fighting giant hornets. But that’s not true in North America. Recently, the first Asian giant hornets were discovered in North America, which are a close relative of the giant hornets that the researchers studied. Scientists are now working hard to wipe them out. Otherwise, honeybees there could be in trouble.

1. Which word best describes hornets’ attacking Asian honeybees?

A．Aimless.	B．Rare.
C．Risky.	D．Unwilling.

2. What is the scientists’ statement about the honeybees based on?

A．Field research.	B．Relevant reports.
C．Published statistics.	D．Beekeepers’ descriptions.

3. What makes scientists confused about Asian hornets?

A．Why they find the hives easily.	B．How they are affected by the poop.
C．How they get a special chemical.	D．Why they attack hive entrances.

4. What can be inferred about the honeybees in North America?

A．They aren’t able to deal with the hornets.

B．They are learning from Asian honeybees.

C．They’re close relatives of Asian honeybees.

D．They follow the hornets to move into Asia.

【推荐1】The next time a giant Big Mac or Coke flashes into your mind when you’re walking home from the pub, you may not simply have the snacks.

A British hi-tech company has created a new advertising system that uses lasers (激光) to project images up to 200 metres tall from the sides of tall buildings, enabling advertisers to reach people from virtual billboards in the sky. Passers-by will see each image for only between one tenth and quarter of a second, as their eyes catch the light from certain angles.

Advertising agencies and big businesses have already signalled their interest, but Skyline campaigners have branded the technology “greedy” and said that it could fill our skies with showy and tasteless brands.

The Echo system uses a high laser projector to bounce light off a narrow reflective strip fixed to the side of a building, visible up to 1km away. This creates large-scale images that are captured briefly in the viewer’s eye as a result of the “persistence of vision” effect: the same effect that leaves an imprint (印记) of a light source on your vision after you’ve turned away.

Daniel Siden, the technology’s inventor, explained: People often think this could be subversive, but it’s actually less invasive and more fun than traditional advertising. Mr.Siden said that the system was safe because of the distance between the projector and passers-by. And images would be above the line of sight of drivers and cyclists and below the field of vision of airline pilot. The images have been tested and shown not to cause epileptic seizures (癫痫发作).

Because it uses only one strip of reflected light, the system needs a small amount of the power, about one-twentieth of a standard 96-sheet digital outdoor display for an image of the same height.

Still, some Skyline campaigners dislike the technology and believe it delivers subliminal advertising (隐形广告). Barbara Weiss of the Skyline Campaign, said: “It’s actually offensive. London’s latest tall buildings are not particularly well-built or well designed, but unfortunately people are forced to look at them. Adding stupid advertising that’s invasive in its nature will only make it worse.”

1. Why does the writer use the example of Big Mac, Coke in paragraph 1?

A．Because he attempts to promote these products to potential consumers.

B．Because he wants to introduce a new advertising technology to readers.

C．Because he studies the association between products and images in advertising.

D．Because he tries to illustrate the effectiveness of flashing images of advertised goods.

2. Which of the following statements about the Echo system is true according to the passage?

A．Pedestrians can see the flashing images from specific angles.

B．It’s a new system developed by an advertising agency.

C．The image will no longer exist in vision after you’ve turned away.

D．The system consists of a laser projector, a reflective strip and a physical billboard.

3. The underlined word “subversive” in paragraph 5 probably means ________.

A．subconscious

B．damaging

C．harmless

D．imaginative

4. Which party is likely to set obstacles to the application of the Echo system?

A．Environmentalists worried about energy consumption.

B．Drivers, cyclists and pilots whose sight might be affected.

C．The Skyline Campaign regarding the technology as flashy.

D．The patients who suffer from epileptic seizures.

【推荐2】The purpose of the American court system is to protect the rights of the people. According to American law, if someone is accused of a crime, he or she is considered innocent until the court proves that the person is guilty. In other words, it is the responsibility of the court to prove that a person is guilty. It is not the responsibility of the person to prove that he or she is innocent.

In order to arrest a person, the police have to be reasonable sure that a crime has been committed. The police must give the suspect the reasons why they are arresting him and tell him his rights under the law. Then the police take the suspect to the police station to “book” him. “Booking means that the name of the person and the charges against him are formally listed at the police station.

The next step is for the suspect to go before a judge. The judge decides whether the suspect should be kept in jail or released. If the suspect has no previous criminal record and the judge feels that he will return to court rather than run away -- for example, because he owns a house and has a family -- he can go free. Otherwise, the suspect must put up bail（保释金）. At this time, too, the judge will appoint a court layer to defend the suspect if he can’t afford one.

The suspect returns to court a week or two later. A lawyer from the district attorney’s office presents a case against the suspect. This is called a hearing. The attorney may present evidence as well as witnesses. The judge at the hearing then decides whether there is enough reason to hold a trial. If the judge decides that there is sufficient evidence to call for a trial, he or she sets a date for the suspect to appear in court to formally plead guilty（认罪）or not guilty.

At the trial, a jury of 12 people listens to the evidence from both attorneys and hears the testimony of the witnesses. Then the jury goes into a private room to consider the evidence and decide whether the defendant is guilty of the crime. If the jury decides that the defendant is innocent, he goes free. However, if he is convicted, the judge sets a date for the defendant to appear in court again for sentencing. At this time, the judge tells the convicted（宣判有罪的）person what his punishment will be. The judge may sentence him to prison, order him to pay a fine, or place him on probation（缓刑）.

The American justice system is very complex and sometimes operates slowly. However, every step is designed to protect the rights of the people. These individual rights are the basis, or foundation, of the American government.

1. What is the main idea of the passage?

A．The American court system requires that a suspect prove that he or she is innocent.

B．The US court system is designed to protect the rights of the people.

C．Under the American court system, judge decides if a suspect is innocent or guilty.

D．The US court system is designed to help the police present a case against the suspect.

2. According to the passage, ‘he can go free’ (para. 3) means _________.

A．the suspect is free to choose a lawyer to defend him

B．the suspect does not have to go to trial because the judge has decided he is innocent

C．the suspect will be informed by mail whether he is innocent or not

D．the suspect does not have to wait in jail or pay money until he goes to trial

3. What is the purpose of having the suspect pay bail?

A．To pay for the judge and the trial.

B．To pay for a court lawyer to defend the suspect.

C．To ensure that the suspect will return to court.

D．To ensure that the suspect will appear in prison.

4. According to the passage, which of the following statements is true?

A．The American justice system sometimes operates slowly

B．The police can arrest a suspect without giving any reasons.

C．It is the responsibility of the suspect to prove he is innocent.

D．The jury considers the evidence in the court room.

【推荐3】China's Bao Yongqing has been named the overall winner of the Wildlife Photographer of the Year competition for 2019, claiming one of the world's top photography awards.

The competition is developed and produced by the Natural History Museum in London. This year's competition, the 55th, drew more than 48,000 entries from 100 countries. The winning entry by Bao, a native of Qinghai province, is titled The Moment. It captures a remarkable standoff between a Tibetan fox and a marmot, and was taken on the Qinghai-Tibet Plateau. "Photographically, it is quite simply the perfect moment," said Roz Kidman Cox, the chairwoman of the judging panel. "The expressive intensity of the postures holds you transfixed, and the thread of energy between the raised paws seems to hold the protagonists in perfect balance, Cox said. "To have captured such a powerful interaction between a Tibetan fox and a marmot — two species key to the ecology of this high-grassland region — is extraordinary. Museum Director Michael Dixon said the picture captured "nature's ultimate challenge — the battle for survival". Bao, in a group interview on Wednesday, said of the photo: "It is very difficult and rare to capture this kind of moment, so I knew it was something very special. It took about two or three hours to get this photo. I was watching them for a long time. I have paid attention to this competition for a long time, and my first purpose was to show my image to the world, and secondly to protect the environment and my homeland," he said. " In my hometown, everyone looks after the animals, so when I go home with this award, it will be an encouragement to our people to be more protective of animals and the environment." In addition, the photographer said : "This competition is one of the most important among photographers in China, so I wanted to draw people's attention to animal protection. I hope it will introduce a passion for animals to more people."

The exhibition at the Natural History Museum in Kensington will open on Friday and run through the end of May next year, when it will go on a national and international tour. Entries for next year's competition will be accepted beginning on Oct. 21.

1. What does the underlined word " protagonists" in the 2nd paragraph mean?

A．Onlookers.	B．Photographers.
C．Hunters.	D．Main characters.

2. Which statement is TRUE according to the passage?

A．The competition originated from London.

B．It is a domestic competition in China.

C．The competition drew worldwide attention, making it the best event in photography.

D．Entries are strictly restricted, mainly focused on endangered animals.

3. What is the reason for Bao's winning the award?

A．His capturing a crucial moment between two typical species.

B．His expertise in photography.

C．His devotion to wildlife protection.

D．His publicizing the knowledge of rare animals.

4. What can we know from the passage?

A．The exhibition will go on a tour in China.

B．Bao has decided to submit his latest photo.

C．Taking photos is not painstaking.

D．Photograph is a way to raise people's awareness of animal protection.