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1 . Urban planners may soon have a new way to measure traffic jams. By putting in the different routes by which vehicles can travel between locations, researchers have developed a new computer algorithm (运算法则) that helps quantify regions of jams in urban areas and suggests ways around them.

The study, published in the Journal of Physics: Complexity, used traffic speeds from taxis in New York City to demonstrate how road infrastructure (基础设施) and driver behavior can create complex road networks that differ among cities.

The team approached the issue by designing a computer algorithm to capture the topology-or relationship between the different routes between locations-of road networks. “We found that the most significant traffic bottlenecks in Manhattan seem to arise as a result of the city’s structural layout,” said study co-author Daniel Carmody. “For example, the fact that a bridge enters Manhattan at a range where traffic is already limited due to Central Park slows traffic in the area considerably.”

The researchers performed a comparative analysis using traffic patterns in Chengdu, China, to test if the algorithm works equally well in areas with different layouts. Manhattan has a long and thin structure, while Chengdu is round. There are significant differences in the way traffic moves between these two different setups, the researchers said.

“The bottlenecks in Chengdu seem to arise due to the function of the buildings in a particular area,” Carmody said. “For example, it is hard to travel in and out of the central business district in Chengdu because of the large amount of traffic alone. Beltways, or faster streets around busy areas, have emerged in circles around this area, which is not surprising because this feature was intentionally built into the city.”

In Manhattan, the bridges and underpasses that form the entry and exit points cause traffic slowdowns. However, in lower Manhattan, where drivers seem to obey the lower posted speed limits, traffic moves more smoothly, forming a new traffic beltway with the southern end of Central Park acting as a block between lower and central Manhattan.

“It surprised us that there is an emergent beltway in such a busy area of Manhattan,” Carmody said. “This indicates that, unlike in Chengdu, beltways seem to arise from driver behavior even when they aren’t part of the structural plan of a traffic network.”

“The researchers have imagined that this technology could give urban planners a means to quantify traffic patterns, leading to better traffic,” Carmody said. “As methods of transportation develop, new problems will emerge, and we hope that our tools will give planners new ways to measure what is going on with city traffic.”

1. According to the new study, what contributes to traffic jams in Manhattan?
A.The number of bottlenecks and beltways.
B.The location of bridges and underpasses.
C.Road facilities and driver behavior.
D.Road signs and urban population.
2. Researchers also studied Chengdu in order to         .
A.compare the layouts of the two cities
B.find better infrastructure for one city
C.design traffic patterns with the algorithm
D.assess the effectiveness of the algorithm
3. Why do vehicles move faster in lower Manhattan?
A.Because of lower posted speed limits.
B.Because drivers follow the traffic rules.
C.Because it is planned in the traffic network.
D.Because a beltway has emerged around the area.
4. Who is the target of this new computer algorithm?
A.City planners.
B.Slower drivers.
C.Infrastructure developers.
D.Road sign designers.
2021-05-18更新 | 690次组卷 | 2卷引用:福建师范大学附属中学2020-2021学年高二下学期期末考试英语试题

2 . Most of our everyday plastic items end up in landfill, left to rot away for many years. But some of it blows away, spoiling the countryside and causing damage to the natural environment and harming wildlife. The problem is most severe in our oceans. Research has found a deserted island in the South Pacific is littered with the highest density (密度) of plastic waste anywhere in the world.

The study described how remote islands act as a ‘sink’ for the world’s rubbish. They become collecting points for fishing items and everyday things including toothbrushes, cigarette lighters and razors-things that we throw away. Dr Jennifer Lavers from the University of Tasmania says “Almost every island in the world and almost every species in the ocean is now being impacted one way or another by our waste.”

This highlights the potentially deadly effect of our disposable (用后即丢弃) culture. When we throw something away, it doesn’t just disappear, it goes somewhere and because of the nature of plastic, it takes a long time to rot away and stays there causing great damage to the ocean’s ecology (生态). And worse still, plastic is broken down into tiny particles over a long period by the wind and the waves, then sea creatures at the bottom of the food chain swallow them. These creatures are eaten by the fish that we eventually consume.

The solution to this problem would be to use less plastic. Several countries now charge for using plastic carrier bags which reduces the amount used and some products now use natural and recyclable materials.

1. What does the author really want to tell us in the first parapraph?
A.It is a good idea to end plastic items in a landfill.
B.Plastic items blow away easily in the strong wind.
C.It is a bad habit to throw away plastics everywhere.
D.Plastic pollution in oceans is a most serious issue.
2. What does the author mean by saying the islands act as a ‘sink’ for the world rubbish?
A.The islands begin to sink with much rubbish on them.
B.The islands have become gathering places for rubbish.
C.The islands are ideal places to hide the plastic products.
D.The islands are inaccessible due to the white pollution.
3. What does the underlined word “This” in Paragraph 3 refer to?
A.Impact on sea species.B.Thrown-away rubbish.
C.The nature of plastic.D.The ocean’s ecology.
4. What’s the really frightening fact about the plastic pollution in oceans?
A.Breaking the balance of ocean ecology.B.Causing many sea creatures to die out.
C.Presenting potential risks to our health.D.Cutting off the food chain of sea creatures.
21-22高三上·全国·阶段练习
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3 . Google Cloud is racing to roll out new features and services aimed at helping its customers maintain business during the coronavirus pandemic, including a new security product expected to launch Tuesday. The new security product includes technology that could attract more businesses, especially those in highly regulated industries, to adopt cloud services. The technology protects data while it is being processed. “We wanted people comfortable in knowing they can move to the cloud and don’t have to worry about the security of their data,” said Mr. Kurian, chief executive of the unit.

Google Cloud accelerated the development of several features for its virtual meeting product, Google Meet, in April, including one that automatically filters out background noises such as keystrokes and dog barks. Another feature automatically adjusts a user’s video with lighting variations. In 2018, the company launched an AI tool for manufactures that automatically inspects products for quality.

Google Cloud also benefited from the protocols(协议) for Black Friday, when shopping websites see a rush of online shoppers, to deal with sudden more demand for cloud services. The protocols benefited the customers in online videogames, government services, education and shopping, who needed assistance in more computing capacity.

Also, the protocols benefited many companies. Godbole, chief information officer for home improvement company Lowe’s Cos., worked with Mr. Kurian and his team in March and April to manage increased business. Lowe’s customers were doubling on projects such as those related to home offices during those months, and “Our company saw tremendous demand,” Ms. Godbole said.

The coronavirus pandemic presented a new opportunity for Google Cloud to prove its value for customers, said Plummer, chief of research for cloud computing. “Google Cloud aims to differentiate itself by being known as a provider that can handle unpredictable events,” Mr. Plummer said. It aims to do that by offering secure remote-work tools and software development tools that require minimal coding. “Trust is built in times of crisis,” he said.

1. During the coronavirus pandemic, Google Cloud is working hard to ________.
A.start more highly regulated businesses.
B.help customers to save more money.
C.make people move to the cloud more safely.
D.remove data while it is being processed.
2. What does the underlined phrase “filters out” in Paragraph 2 mean?
A.Produces.B.Breaks.C.Matches.D.Removes.
3. Why does the author mention Ms. Godbole’s company?
A.To show the market needs the new products of Google Cloud.
B.To share the experience of Ms. Godbole’s company.
C.To offer an example of running a company in times of crisis.
D.To encourage people to follow the step of Godbole.
4. What does Mr. Plummer think of the new service of Google Cloud?
A.Insufficient.B.Reliable.C.Unpredictable.D.Complex.
2021-04-26更新 | 239次组卷 | 3卷引用:福建省永春第一中学2021-2022学年高二上学期期中考试英语试题

4 . If your in-box is currently reporting unread messages in the hundreds or thousands, you might have a hard time believing the news: e-mail is on the decline.

At first thought, that might seem to be the case. The incoming generation, after all, doesn’t do e-mail. Oh, they might have an account. They use it only as we would use a fax machine: as a means to communicate with old-school folks like their parents or to fulfill the sign-up requirements of Web sites. They rarely check it, though.

Today’s instant electronic memos — such as texting and Facebook and Twitter messages — are more direct, more concentrated, more efficient. They go without the salutation (称呼语) and the signoff (签收); we already know the “to” and “from.” Many corporations are moving to messaging networks for exactly that reason: more signal, less noise and less time. This trend is further evidence that store-and-forward systems such as e-mail and voicemail are outdated. Instead of my leaving you a lengthy message that you pick up later, I can now send you an easily-read message that you can read — and respond to — on the go.

The coming of the mobile era is responsible for the decline of e-mail. Instant written messages bring great convince to people. They can deal with them at about any time: before a movie, in a taxi, waiting for lunch. And because these messages are very brief, they’re suitable for smart phone typing.

Does this mean e-mail is on its way to the dustbin of digital history? Not necessarily. E-mail still has certain advantages. On the other hand, tweets and texts feel ephemeral — you read them, then they’re gone, into an endless string, e-mail still feels like something you have and that you can file, search and return to later. It’s easy to imagine that it will continue to feel more appropriate for formal communications: agreements, important news, longer explanations.

So, e-mail won’t go away completely. Remember, we’ve been through a transition (过度) like this not so long ago: when e-mail was on the rise, people said that postal mail was dead. That’s not how it works. Postal mail found its smaller market, and so will e-mail. New technology rarely replaces old one completely; it just adds new alternatives.

1. What would the incoming generation like to do with their e-mail accounts?
A.Check bank accounts.B.Send long messages.
C.Fill in some forms.D.Communicate with their colleagues.
2. Which of the following is mainly discussed in paragraphs 3 and 4?
A.The possible reasons behind the decline of e-mail
B.The likes and dislikes of the young generation
C.The rapid development of e-communication channels
D.Evidence about the uncertain future of easily-consumed messages
3. What does the underlined word “ephemeral” in paragraph 5 mean?
A.Automatically-sending.B.Randomly-written.
C.Hardly- recognized.D.Shortly-appearing.
4. According to the passage, which of the following statements is true?
A.It’s too early to determine the decline of e-mail.
B.E-mail has reasons to exist with its own advantages.
C.E-mail, just like postal mail has come to its end.
D.We should feel sorry for the decline of e-mail.
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5 . In a study published in Nature Machine Intelligence, researchers at Ohio State University show how artificial intelligence(AI)can follow clinical trials to identify drugs for repurposing, a solution that can help advance innovative treatments.

Repurposing drugs is legal and not unusual. When doctors prescribe(开处方)drugs that have been approved by the Food and Drug Administration(FDA)for purposes different from what is printed on the labels, the drugs are being used “off-label” Just because a drug is FDA-approved for a specific type of disease does not prevent it from having possible benefits for other purposes.

For example, Metformin, a drug that is FDA-approved for treating type 2 diabetes, is also used to treat PCOS(a disease of women), and other diseases. Trazodone, an anti-depressant with FDA-approval to treat depression, is also prescribed by doctors to help treat patients with sleep issues.

The Ohio State University research team created an AI deep learning model for predicting treatment probability with patient data including the treatment, outcomes, and potential confounders(干扰因素).

Confounders are related to the exposure and outcome. For example, a connection is identified between music festivals and increases in skin rashes(红疹). Music festivals do not directly cause skin rashes. In this case, one possible confounding factor between the two may be outdoor heat, as music festivals tend to run outdoors when the temperature is high, and heat is a known cause for rashes. When working with real-world data, confounders could number in the thousands. AI deep learning is well-suited to find patterns in the complexity of potentially thousands of confounders.

The researcher team used confounders including population data and co-prescribed drugs. With this proof-of-concept, now clinicians have a powerful AI tool to rapidly discover new treatments by repurposing existing medications.

1. What do we know about a drug used off-label?
A.It is sold without a label.
B.It is available at a low price.
C.Its uses extend beyond the original ones.
D.Its clinical trials are rejected by doctors.
2. Metformin and Trazodone are similar as both of them________.
A.are used off-label
B.treat rare diseases
C.result in sleep issues
D.are medical breakthroughs
3. What can be inferred about “confounders”?
A.They are possible treatments.
B.They are environmental factors.
C.They can be easily recognized in real-world data.
D.They should be taken into serious consideration.
4. What is the main idea of the text?
A.AI examines benefits of existing drugs.
B.AI identifies off-label uses for drugs.
C.AI finds new drugs for common diseases.
D.AI proves the power of drug research.

6 . The sea could be the food bowl of the future. In Jervis Bay, south of Sydney, seaweed, which is rich in fibre and omega 3, is grown and harvested.

Pia Winberg is a marine scientist who runs Australia's first food-grade fanned seaweed company. Her crop is grown alongside mussels (贻贝)and is used as an additive in pasta (意大利面)and other products.

Seaweed is also raised in large tanks, where it absorbs carbon dioxide waste from a wheat processing factory. The business is small, but could help to reduce the ecological footprint of traditional farming.

“We used ten percent of seaweed instead of wheat in breads and pastas, we've eliminated a million hectares of land, we've eliminated all of the carbon dioxide emissions associated with that, and we've also reduced the pressures on very precious fresh water.” said Pia Winberg.

Spiny sea urchins (多刺海胆虫)are another blue economy resource. They can destroy marine habitats, but a recent competition for environmental start-ups in Australia, saw them not as a pest but a delicacy (美味).

Martina Doblin, CEO of Sydney Institute of Marine Science, said, “By 2050 we will have some ten billion people on the planet, and about half the food they eat will come from the ocean. So, we really do need to pay attention to the way that we manage the blue economy-generating wealth from the ocean but in a sustainable (可持续的)way.”

Farming at sea has its challenges. Infrastructure (基础设施)has to be sound, as do supply chains and biosecurity. But get these things right, and the ocean might just be the next great economic frontier.

1. What is the function of the first paragraph?
A.To lead to the main topic.
B.To describe a new kind of seaweed.
C.Tell how important the food safety is.
D.To explain the meaning of blue economy.
2. What can we learn from what Martina Doblin said in paragraph 6?
A.Ocean exploration has made little progress so far.
B.More and more people will die of hunger in the future.
C.More work is needed for a better use of the natural resources.
D.Sea farming will be a good way to solve the coming world food problem.
3. Which word can be used to describe the author's attitude towards sea fanning?
A.Skeptical.B.Objective.C.Tolerant.D.Negative.
4. Which can be a suitable title for the text?
A.How to Protect the Marine Animals
B.Measures to Develop Blue Economy
C.Farming the Sea for the Future of Food
D.Traditional Farming is Gradually Disappearing
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7 . Until recently, several lines of evidence — from fossils genetics, and archaeology — suggested that humans first moved from Africa into Eurasia (the land of Europe and Asia) about 60,000 years ago, quickly replacing other early human species, such as Neanderthals and Denisovans, that they may have met along the way.

However, a series of recent discoveries, including 100,000-year-old human teeth found in a cave in China, have clouded this straightforward statement. And the latest find, a prehistoric jawbone at the Misliya Cave in Israel dating back to nearly 200,000 years ago, which is almost twice as old as any Homo sapiens (智人) remains discovered outside Africa, where our species was thought to have originated from, has added new and unexpected twist.

The find suggests that there were multiple waves of migration across Europe and Asia and could also mean that modern humans in the Middle East were interacting, and possibly mating, with other human species for tens of thousands of years. “Misliya breaks the mould (模式) of existing assumptions of the timing of the first known Homo sapiens in these regions,” said Chris Stringer, head of human origins at the Natural History Museum in London. “It’s important in removing long-lasting-constraint (限制) on our thinking.”

Prof. Hershkovitz, who led the work at Tel Aviv University said, “What Misliya tells us is that modern humans left Africa not 100,000 years ago, but 200,000 years ago. This is revolution in the way we understand the evolution of our own species.” He also added that the record now indicates that humans probably travelled beyond the African continent whenever the climate allowed it. “I don’t believe there was one big departure from Africa,” he said. “I think that throughout hundreds of thousands of years humans were coming in and out of Africa all the time.”

The discovery means that modern humans were potentially meeting and interacting during a longer period with other ancient human groups, providing more opportunity for cultural and biological exchanges. It also raises interesting questions about the fate of the earliest modern human pioneers. Genetic data from modern-day populations around the world strongly suggest that everyone outside Africa can trace their ancestors back to a group that left around 60,000 years ago. So, the inhabitants of the Misliya Cave are probably not the ancestors of anyone alive today, and scientists can only guess why their branch of the family tree came to an end.

1. What does the underlined word “they” refer to in Paragraph 1?
A.Early human species living in Europe.
B.Neanderthals and Denisovans.
C.People first moving from Africa into Eurasia.
D.Ancient people living in Africa all the time.
2. What does the Misliya discovery suggest?
A.Our ancestors were powerful and kind of aggressive.
B.Our ancestors left Africa much earlier than thought.
C.The origins of modern humans are from Europe.
D.Homo sapiens, Neanderthals and Denisovans once lived together.
3. What can be learned from Prof Hershkovitz’s words?
A.Climate was a big factor in human migration from Africa.
B.There was a large-scale human migration from Africa.
C.Human migration was occasional in Africa 200,000 years ago.
D.The Misliya find is against our understanding of human evolution.
4. What can we infer about those living in Misliya 200, 000 years ago according to the last paragraph?
A.They were ancestors of people living in China.
B.They left evidence for their mysterious disappearance in history.
C.They probably contributed little to present-day people genetically.
D.They could be traced by their remains left on their travelling route.

8 . You are given many opportunities in life to choose to be a victim or creator. When you choose to be a victim, the world is a cold and difficult place.“They” did things to you which caused all of your pain and suffering.“They” are wrong and bad, and life is terrible as long as “they” are around.Or you may blame yourself for all your problems, thus internalizing(内化)your victimization.The truth is, your life is likely to stay that way as long as you feel a need to blame yourself or others.

Those who choose to be creators look at life quite differently.They know there are individuals who might like to control their lives, but they don't let this get in the way.They know they have their weaknesses, yet they don't blame themselves when they fail.Whatever happens, they have choice in the matter.They believe their dance with each sacred(神圣的)moment of life is a gift and that storms are a natural part of life which can bring the rain needed for emotional and spiritual growth.

Victims and creators live in the same physical world and deal with many of the same physical realities, yet their experience of life is worlds apart.Victims relish(沉溺)in anger, guilt, and other emotions that cause others--and even themselves---to feel like victims, too.Creators consciously choose love, inspiration, and other qualities which inspire not only themselves, but al1around them.Both victims and creators always have choice to determine the direction of their lives.

In reality, all of us play the victim or the creator at various points in our lives.One person, on losing a job or a special relationship, may feel as if it is the end of the world and sink into terrible suffering for months, years, or even a lifetime.Another with the same experience may choose to first experience the grief, then accept the loss and soon move on to be a powerful creative force in his life.

In every moment and every circumstance, you can choose to have fuller, richer life by setting a clear intention to transform the victim within, and by inviting into your life the powerful creator that you are.

1. What does the word “they” in Paragraph 1 probably refer to?
A.People and things around you.B.Opportunities and problems.
C.Creators and their choices.D.Victims and their sufferings.
2. According to Paragraph 2, creators__________.
A.seem willing to experience failures in lifeB.possess the ability to predict future life
C.handle ups and downs of life wiselyD.have potential to create something new
3. What is the author's purpose in writing this passage?
A.To define victims and creators.
B.To evaluate victims against creators.
C.To explain the relationship between victims and creators.
D.To suggest the transformation from victims to creators.
4. The examples mentioned in Paragraph 4 show that_________.
A.strong attachment to sufferings in life pulls people into victims.
B.people need family support to deal with challengers in life.
C.it takes creators quite a long time to get rid of their pains.
D.one's experiences determine his attitude toward life.
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9 . Some students get so nervous before a test, they do poorly even if they know the material. Sian Beilock, a psychology professor at the University of Chicago in IIIionois, has studied these highly anxious test-takers.

Sian Beilock:"They start worrying about the consequences. They might even start worrying about whether this exam is going to prevent them from getting into the college they want. And when we worry , it actually uses up attention and memory resources. I talk about it as your cognitive (认知) horsepower that you could otherwise be using to focus on the exam.

Professor Beilock and another researcher, Gerardo Ramirez, have developed a possible solution. Just before an exam, highly anxious test-takers spend ten minutes writing about their worries about the test.

Sian Beilock:" What we think happens is when students put it down on paper, they think about the worst that could happen and they reassess the situation. They might realize it's not as had as they might think it was before and, in essence, it prevents these thoughts from popping up when they're actually taking a test."

The researchers tested the idea on a group of twenty anxious college students. They gave them two short math tests. After the first one, they asked the students to either sit quietly or write about their feelings about the upcoming second test.

The researchers added to the pressure. They told the students that those who did well on the second test would get money. They also told them that their performance would affect other students as part of a team effort.

Professor Beilock says those who sat quietly scored an average of twelve percent worse on the second test. But the students who had written about their fears improved their performance by an average of five percent.

Next, the researchers used younger students in a biology class. They told them before final exams either to write about their feelings or to think about things unrelated to the test.

Professor Beilock says highly anxious students who did the writing got an average grade of B+,compared to a B- for those who did not.

Sian Beilock :" What we showed is that for students who are highly test-anxious, who'd done our writing intervention(干预), all of a sudden there was no relationship between test anxiety and performance. Those students most likely to worry were performing just as well as their classmates who don't normally get nervous in these testing situations."

But what if students do not have a chance to write about their fears immediately before and exam or presentation? Professor Beilock says students can try it themselves at home or in the library and still improve their performance.

1. What will happen to test-takers worrying too much before an exam?
A.No entry into the college.B.More concentration on the exam.
C.An undesirable outcome of the exam.D.Weak awareness of the exam.
2. What is strongly suggested to case test-takers' deep anxiety?
A.Making adjustments to the exam.B.Listing their fears about the exam.
C.Sitting doing nothing before an exam.D.Getting pressed by tho examiners.
3. What does the writer intend to tell us?
A.How to look at test anxiety.
B.How to reduce concern about the results.
C.How to contact anxiety with performance.
D.How to cope with anxiety before a big event.
2021-01-12更新 | 79次组卷 | 1卷引用:福建省龙岩市2019- 2020学年高二上学期期末教学质量检查英语试题
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10 . Skeptics are strange a lot. Some of them refuse to admit the serious threat of human activities to the environment and they are tired of people who disagree with them. Those people, say skeptics, spread nothing but bad news about the environment. The "eco-guilt" brought on by the discouraging news about our planet gives rise to the popularity of skeptics as people search for more comforting worldviews.

Perhaps that explains why a new book by Bjorn Lomborg received so much publicity. That book, The Skeptical Environmentalist, declares that it measures the "real state of the world" as fine. Of course, another explanation is the deep pockets of some big businesses with special interests. Indeed, Mr. Lomborg's views are similar to those of some industry-funded organizations, which start huge activities through the media to confuse the public about issues like global warming.

So it was strange to see Mr. Lomborg's book go largely unchallenged in the media though his beliefs were contrary to most scientific opinions. One national newspaper in Canada ran a number of articles and reviews full of words of praise, even with the conclusion that "After Lomborg, the environmental movement will begin to die down."

Such one-sided views should have immediately been challenged. But only a different review appeared in Nature, a respected science magazine with specific readership. The review remarked that Mr. Lomborg's "preference for unexamined materials is incredible".

A critical eye is valuable, and the media should present information in such a way that could allow people to make informed decisions. Unfortunately, that is often inaccessible as blocked by the desire to be shocking or to defend some special interest. People might become half-blind before a world partially exhibited by the media. That's a shame, because matters concerning the health of the planet are far too important to be treated lightly.

1. According to the passage, which of the following may be regarded as "skeptics"?
A.People who agree on the popularity of "eco-guilt".
B.People who dislike the harmful effect of human activities.
C.People who disbelieve the serious situation of our planet.
D.People who spread comforting news to protect our environment.
2. Which of the following can be a reason for the popularity of Lomborg's books?
A.The book challenges views about the fine state of the world.
B.Some big businesses intend to protect their own interests.
C.The author convinces people to speak comforting worldviews.
D.Industry–funded media present confusing information.
3. The author mentioned the review in Nature in order to_________.
A.find fault with Lomborg's book
B.voice a different opinion
C.challenge the authority of the media
D.point out the value of scientific views
4. What is the author's main purpose in writing the passage?
A.To show the importance of presenting overall information by the media.
B.To warn the public of the danger of half–blindness with reviews.
C.To blame the media's lack of responsibility in information.
D.To encourage the skeptics to have a critical eye.
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