1 .      New research confirms that human footprints found in New Mexico are probably the oldest direct evidence of human presence in the Americas, a finding that upends what many scientists knew about human habitation and migration (迁徙).

The footprints were discovered at the edge of an ancient lakebed in White Sands national park. According to the new paper published in the journal Science, they date back to between 21,000 and 23,000 years ago. Actually, the estimated age of the footprints was first reported in Science in 2021, but some researchers raised concerns about the dates. Questions focused on whether seeds of water plants used for the original dating may have absorbed ancient carbon from the lake — which could, in theory, throw off radiocarbon dating by thousands of years. But the new study presents two additional lines of evidence for the older date range. It uses two entirely different materials found at the site, ancient pollen (花粉) and stone grains.

       The reported age of the footprints challenges the once conventional wisdom that humans did not reach the Americas until a few thousand years before rising sea levels covered the Bering land bridge between Russia and Alaska, perhaps about 15, 000 years ago. “This is a subject that's always been controversial because it's so significant. It's about how we understand the last chapter of the peopling of the world,” said Thomas Urban, an archaeologist (考古学家) at Comell University, who was involved in the 2021 study but not the new one.
       Thomas Stafford, an independent archaeological geologist in New Mexico, who was not involved in the study, said he “was a bit suspicious before” but now is convinced. The new study isolated about 75, 000 grams of pure pollen from the same stone layer that contained the footprints. ‘Dating pollen is laborious but worthwhile,” said Kathleen Springer, a research geologist at the US Geological Survey and a co-author of the new paper.
     Ancient footprints of any kind can provide archaeologists with a quick look of a moment in time. While some archeological sites in the Americas point to similar date ranges — including necklaces carved from giant animal remains in Brazil — scientists still question whether such objects really indicate human presence. “White Sands is unique because there's no question these footprints were left by people,” said Jennifer Raff, a scientist at the University of Kansas, who was not involved in the study.
1. The underlined word “upends” (paragraph 1) is closest in meaning to “_______”.

A．comprises

B．connects

C．challenges

D．compares

2. According to the passage, what is special about the new research?

A．It shows the footprints were made by the Russians.

B．It offers more convincing lines of evidence for dating.

C．It confirms that the ancient humans enjoyed living by the lake.

D．It reveals the footprints are much younger than previously thought.

3. It can be inferred from the last paragraph that _____________.

A．necklaces are valuable objects for archaeologists to date animals

B．human footprints are often sure signs of human presence

C．ancient objects in Brazil are excluded from the study

D．White Sands is one important archaeological site

4. Which of the following might be the best title of the passage?

A．Scientists Discovers New Species of Humans in Americas

B．Humans Reached Americas 15, 000 Years Earlier Than Believed

C．American Archaeologists Unearthed Valuable Manmade Objects

D．New Research Confirms Early Human Presence in Americas

2 . Directions: After reading the passage below, fill in the blanks to make the passages coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word;for the other blanks, use one word that best fits each blank

Seeing Math on the Page

Math and literature are probably two of the subjects that bring students headaches. However, scientists wonder     1     the beauty of math can be found in literary works. Once Upon a Prime: The Wondrous Connections between Mathematics and Literature, a book published recently by UK mathematician Sarah Hart,     2     (present) some interesting thoughts about "three". She argues that the beauty of this number is indeed evident in many works of western literature and languages in general.

‘Three’ is the minimum number     3     a two-dimensional shape can be defined. For example, three sticks can create a triangle, a stable structure. Many common phrases are in three words, such as “ready, set, go”. Being the first things kids may learn, some nursery rhymes have a word     4     (repeat) three times, such as “row, row, row your boat”. In stories, there are usually three main characters, such as Harry, Ron and Hermione in the Harry Potter series. For a series of novels, there are usually three books     5     four, according to Hart.

Why is it always the third son who behaves differently from his two older brothers, thus     6     (win) the princess? “The reason for this,” Hart explains, “ is obvious. We require two repetitions to get to know the pattern,     7     the breaking of the pattern in the third character can surprise or amuse us.”

Similarly, another study by researchers at the University of Vermont also connected math and storytelling. They analyzed more than 1, 300 fiction books and arranged for 10, 000 words from the books     8     (rate) by 50 participants on a happiness scale of 1 to 9. Then the ratings     9     (categorize) into different graphs, which showed how the readers' emotions changed while reading. It turned out that each story fit perfectly into one of six basic graphs, a mathematical pattern.

“The idea that one would     10     choose between mathematics and literature is something of a tragedy, ”Hart says, “The two fields are fundamentally linked”.

3 .

Zion National Park in Utah has plenty of trails, but Angels Landing may be the most breathtaking. Picture this. You begin the hike on the wide and well-maintained West Rim Trail. It follows the river and then crosses the bottom of the canyon, surrounded by 270-million-year-old layers of rock. Relaxing, right? Just wait for it. The trail then starts to climb via a series of switchbacks (急转弯) leading up the side of the mountain. Then more switchbacks: 21 tighter turns, called “Walter’s Wiggles,” where elevation levels rapidly increase. Your heartbeat is probably rapidly increasing at this point, too.

On top of Walter’s Wiggles, you can stop for a stunning view (perhaps with a marriage proposal) and a restroom stop while you contemplate (仔细考虑) the final stretch of the hike. If you’re afraid of heights, it’s best to turn back now. The last stretch is the real test of bravery.

The last half mile of the hike is what really ranks it as one of the nation’s most dangerous. Angels Landing itself is a fin-like formation jutting (突出) 1,500 feet out of the canyon, and this is where you make the final 500-foot climb. Guardrails and chains bolted (拴住) into the cliff help you keep from tumbling over the extremely steep ledge. You’re literally living on the edge, and you don’t want to trust the “angels” down there to catch you. Once you reach the top, however, it’ll all be worth it: 360-degree views of the canyon make a great backdrop for kicking back and having a meal before you come back down the way you came.

Angels Landing might be dangerous, but thankfully, not too many people have had fatal falls. According to the park website, seven people have died in the 100 years the park has existed. Still, this is a very vigorous hike. If you’re out of shape, bringing young children along, feel ill or prone to fainting, or are just plain afraid of heights, opt for an easier trail.

Angel’s Landing is a great hike for most of the year, besides the cold winter months when the trails could become dangerously slippery. Summer is the most popular time of year — and therefore the most crowded — but it can also get extremely hot, so opt for an early morning hike while the temperatures are still mild.

Sure, it’s dangerous, but there’s a reason this is one of Zion ‘s most popular hikes. If you’re up for the challenge, Angels Landing will definitely deliver rewards.

This article first appeared on Curiosity.com.

1. What geological feature surrounds the hiker during the initial part of the hike?

A．Plenty of trails in the park.	B．Mountain Peaks.
C．270-million-year-old layers of rock.	D．Grass Meadows.

2. What is the main attraction and appeal of Angels Landing?

A．The challenging hike with switchbacks.

B．The 360-degree views of the canyon.

C．The well-maintained West Rim Trail.

D．The river crossing and rock formations.

3. Which of the following statement is true according to the passage?

A．If a tourist is afraid of heights, it’s best to turn back onto Angels Landing.

B．Seven people have died so far due to slippery trails in winter.

C．Bringing young kids along to climb onto Angels Landing will be appreciated.

D．Taking a break with the views of the canyon as background is absolutely worth the trip.

4. Which of the following could be the best title for the passage?

A．Unveiling the Hidden Beauty: Exploring Zion National Park’s Trails

B．Zion’s Ultimate Thrill: The Adrenaline-Pumping Angels Landing Expedition

C．Chasing Heights: Angels Landing Adventure in Utah’s Zion National Park

D．Angels Landing: Conquering Utah’s Breathtaking and Daring Hike in Zion National Park

4 . Directions: Read the following passage. Summarize the main idea and the main point(s) of the passage in no more than 60 words. Use your own words as far as possible.

Drawing High Schoolers to Science

A group of educators and plant scientists at Michigan State University (MSU) are connecting to reshape science classes. And this particular partnership isn’t just helping students get a better understanding of biology; it’s turning them into young scientists, even if only during class.

It doesn’t take long to see that the curriculum born from this collaboration makes for a much different experience than the traditional high school biology classes. For starters, it has a comic book for a workbook. Secondly, students are getting their hands dirty growing plants. MSU researchers are also studying the plant. The high schoolers are asking some of the same questions professional plant scientists are trying to answer.

“We’re getting them engaged with science in science practices, not just having them learn about science,” says Hildah Makori, a researcher at MSU. “They learn to look at things differently. That’s a life-time impact.”

The main characters of the comic book are a pair of young field scientists. They invite the high school students to help with plant research inspired by a real project at MSU. By growing their own plants, the students learn about genetics, evolution and how these interact with the environment.

The team has seen how this practice could keep students in the driver’s seat of their learning. To help the characters out, students set up different experiments to test their ideas.

The program is working. “This comic personally gave me a click that sparked my curiosity,” reads one student’s survey response. “The comic book put a lot of creative atmosphere into the story instead of just looking at words, instead of just listening to the teacher talk,” says another.

Teachers also had positive reviews. In a survey, one remarked how helpful it was to have the comic to refer to. The students could see the comic’s characters doing something in the lab and realize, “I’m able to do this right here at my table and I can do the same thing,” the teacher says.

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5 . Scientists know that the internal forces that generate Earth’s magnetic field (磁场) can change and that the strength of the field swings over time. This can lead to gradual shifts in the intensity and location of Earth’s magnetic north and south poles and even reversals where Earth’s magnetic poles trade places.

But are these geomagnetic events responsible for extreme weather, extinction, and even disasters? Claims that Earth’s magnetic field is responsible for climate change are widespread online, but scientists say the theory has no basis. “At this time there aren’t any credible mechanisms that could make it a possibility,” says Gavin Schmidt, a climatologist in New York.” It’s not that we’re ruling out magnetic effects on climate without thinking about it, we collectively have thought about it, and it’s been found devoid.

There are three north poles on Earth: true north, geomagnetic north, and magnetic north. True north is a fixed position on the globe that points directly towards the geographic North Pole. But geomagnetic north, currently located over Canada’s Ellesmere Island, is not a fixed point — it represents the northern axis (轴) of Earth’s magnetosphere and shifts from time to time. Magnetic north corresponds to magnetic field lines and is what your compass locates.

During a pole reversal, Earth’s magnetic north and south poles exchange locations. This happens on average every 300,000 years or so, but the last reversal occurred around 780.000 years ago. Some scientists have assumed that reversals and the corresponding decrease in strength of the magnetic field could cause a big problem that increased solar radiation was able to enter Earth’s atmosphere, altering ozone levels and driving global climate shifts and extinctions.

Kirk Johnson, a director of the Smithsonian’s National Museum of Natural History, has spent much of his career studying the extinction of dinosaurs. While analyzing fossil records and timelines surrounding his research, Johnson zeroed in on the magnetic reversal that occurred around 66.3million years ago.

Deep ocean samples revealed significant climate change around 66.3 million years ago. But this also coincides with a large volcanic eruption in India called the Deccan volcanism, which produced some of the longest lava (熔岩) flows on Earth. “We’ve always owed that transition to the carbon dioxide released by the Deccan volcanism and the increase of greenhouse gases,” says Johnson. “There are two things happening: The magnetic field is changing, the Deccan volcanism is happening, and there’s climate warming. So that would be an example of coincidental climate change.”

1. The underlined word “devoid” in paragraph 2 probably means        .

A．fruitless

B．obvious

C．reasonable

D．misleading

2. Which north pole on earth is involved in the pole reversal?

A．True north.

B．Geomagnetic north.

C．Magnetic north.

D．Geographic north

3. Which of the following is TRUE according to the passage?

A．The geomagnetic events are to blame for the climate change.

B．The decrease in strength of the magnetic field resulted in extinction.

C．The magnetic field is changing all the time with the climate warming.

D．Internal forces which produce Earth’s magnetic field can alter over time

4. Which of the following statements does Kirk Johnson most probably agree with?

A．A magnetic reversal doesn’t necessarily cause climate change.

B．A magnetic reversal is accompanied with significant climate change

C．The extinction of the dinosaurs is due to the magnetic reversal.

D．Climate change is not relevant to the carbon dioxide emission.

6 . Social Masking

Amanda is always an expert at working the room. She would adopt the manner of the people around her to fit in while hiding her true personality. This is social masking, the process of hiding your natural way of interacting with others so you can feel accepted.     1    Instead, they are hoping to fit in with everybody else. Social masking is a set of learned pattern-matching behaviors, movements and actions where you try to be normal to fit in rather than stand out.

    2    People all wear certain social masks in order to get through some tricky life situations with confidence, according to Dr. Tara Quinn-Cirillo. And some experts even think social masking is built in all human beings at a physical level, adding that something in our brain gives indications of how to essentially stay safe and not stick out.

In a world that often tells us to just be ourselves, you might wonder why we are still dependent on these social masking behaviors. “Social masking happens because we as a species want to be included,” says Tara. “It has been a tribal thing of being together rather than being on our own, from a historical perspective.     3    ”

There is a huge difference between naturally identifying with someone and consciously social masking.    4    Social masking, on the other hand, involves a conscious effort to change your personality to suit your surroundings. It typically involves depressing your natural urges and changing your personal interests to fit the crowd.

A．Social maskers do not try hard to match other people in pace and tone.

B．Social masking is something we all engage in to some extent.

C．Social maskers are not trying to fox anyone.

D．When we are in natural identification with someone, it happens naturally, and there is very little effort involved.

E．It’s adopted by people unable to naturally act in a way considered socially acceptable.

F．That is, it’s an ancient part of our evolution to socialize, rather than be anti-social or a misfit.

7 . Antibiotics, which can destroy or prevent the growth of bacteria and cure infections, are vital to modern medicine. Their ability to kill bacteria without harming the patient has saved billions of lives and made surgical procedures much safer. But after decades of overuse, their powers are fading. Some bacteria have evolved resistance, creating a growing army of superbugs, against which there is little effective treatment. Antimicrobial (抗菌的) resistance, expected to kill 10 million people a year by 2050 up from around 1 million in 2019, has been seen as a crisis by many.

It would be unwise to rely on new antibiotics to solve the problem. The rate at which resistance emerges is increasing. Some new drugs last only two years before bacteria develop resistance. When new antibiotics do arrive, doctors often store them, using them only reluctantly and for short periods when faced with the most persistent infections. That limits sales, making new antibiotics an unappealing idea for most drug firms.

Governments have been trying to fix the problem by channeling cash into research in drug firms. That has produced only limited improvements. But there is a phenomenon worth a look. Microbiologists have known for decades that disease-causing bacteria can suffer from illnesses of their own. They are supersensitive to attacks by phages, specialized viruses that infect bacteria and often kill them. Phages are considered a promising alternative to antibiotics.

Using one disease-causing virus to fight bacteria has several advantages. Like antibiotics, phages only tend to choose particular targets, leaving human cells alone as they infect and destroy bacterial ones. Unlike antibiotics, phages can evolve just as readily as bacteria can, meaning that even if bacteria do develop resistance, phages may be able to evolve around them in turn.

That, at least, is the theory. The trouble with phages is that comparatively little is known about them. After the discovery of penicillin, the first antibiotic, in 1928, they were largely ignored in the West. Given the severity of the antibiotic-resistance problem, it would be a good idea to find out more about them.

The first step is to run more clinical trials. Interest from Western firms is growing. But it is being held back by the fact that phages are an even less appealing investment than antibiotics. Since they are natural living things, there may be trouble patenting them, making it hard to recover any investment.

Governments can help fun d basic research into phage treatment and clarify the law around exactly what is and is not patentable. In time they can set up phage banks so as to make production cheaper. And they can spread awareness of the risks of overusing antibiotics, and the potential benefits of phages.

1. We can learn from paragraphs 1 and 2 that        .

A．doctors tend to use new antibiotics when the patients ask for them

B．antimicrobial resistance is developing more rapidly than predicted

C．new antibiotics fail to attract drug firms due to limited use of them

D．previous antibiotics are effective in solving modern health problems

2. What is phages’ advantage over antibiotics?

A．They can increase human cells when fighting bacteria.

B．They are not particular about which cells to infect and kill.

C．They can evolve accordingly when bacteria develop resistance.

D．They are too sensitive to be infected by disease-causing bacteria.

3. According to the passage, the obstacle to phage treatment is that        .

A．there is little chance of patenting phages in the future

B．governments provide financial support for other research

C．the emergence of superbugs holds back drug firms’ interest

D．over-dependence on antibiotics distracts attention from phages

4. What is the main idea of the passage?

A．Governments fail to stop the use of antibiotics.

B．Phages could help prevent an antibiotics crisis.

C．Development of antibiotics is limited by phages.

D．Antimicrobial resistance calls for new antibiotics.

8 . Directions: After reading the passage below, fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.

Buy Now, Pay Later Spending

Buy now, pay later(BNPL) spending is expected to rise to record levels this holiday season. With so many young “buy now, pay later” shoppers already in debt from this short-term financing tool not requiring interest, questions emerge: Why do these shoppers use such a tool? And what risks does it pose to their budgets in the months     1     (come)?

The many Generation Z and millennials (typically around 40 years and younger) tend to use this short-term financing,     2     allows them to buy items and pay for them over time. Offered mostly by financial technologies, BNPL allows these customers to pay back their purchases     3     interest and with the first payment usually made at checkout. The most common “buy now, pay later” plan is     4     customers make four equal payments and pay off the debt in six weeks. It’s been a lifeline for some people, such as a university student     5     weekly income is not big enough. “BNPL provides consumers with flexible payment options so they     6     manage spending,” said Vivek Pandya, lead analyst at Adobe Digital Insights. That is of great importance for many consumers, especially     7     with a tendency to purchase higher-cost items.

However, since BNPL     8     (appear), warnings from experts have come into our view. They have been indicating that it’s financially unhealthy to form such a spending habit. According to New York Federal Reserve economists, BNPL may encourage debt to increase over time,     9     (influence) a consumer’s ability to meet non-BNPL commitments, or users to over extend themselves. Users should also note that     10     interest is not charged on the loan, they’ll be hit with late fees for missed payments, which can add up quickly, says the Consumer Financial Protection Bureau.

10 . Directions: Read the following passage. Summarize the main idea and the main point(s) of the passage in no more than 60 words. Use your own words as far as possible.

Will Plant-based Protein Continue to be an Appetizer in Food World?

A good vegan milk needs to look like milk and taste like milk, whether it’s a fatty version, preferred by bakers, or a skimmed one, favored by the health-conscious. For years, manufacturers of plant-based protein have had trouble hacking this delicate imitation game and it seems that they are winning back a bit. The global revenues (收益) from alternative proteins could reach $290 billion by 2035 and that is a cautious estimate. However, can it last?

Unlike those early products, which were neither terribly tasty nor particularly nutritious, cleaver (剁肉刀) processing improves textures, additives boost taste and a pinch of specially engineered peas and beans adds nutrient in the latest products. Still, ultra-processed substitutes seldom match animal proteins in nutritional value. Animal products, including milk, are better for children’s bone development, though lab- grown versions of meat or dairy are becoming more nutritious. Meanwhile, green-minded consumers are realizing that plant-based does not necessarily mean sustainable in that it still takes a lot to obtain raw materials. Farming almonds (杏仁) to make a milk-like drink, for example, uses huge quantities of water.

Plant-based proteins are also a tough sell in giant markets like India, where diets are already rich in plants and vegetables, or Nigera, where meat-eating is a sign of wealth. That limits their global appeal.

All these suggests that alternative proteins have far to go to replace the animal kind. The limitations may be weighing on the firms involved. Oatly’s market value has fallen by about 80% since its listing, partly because of production difficulties. That of Beyond Meat, whose burgers feature in McDonald’s latest menu, is down by 90% from its peak. Plant-based foods may no longer be only an appetizer in diets, but their maker remain one in food business.

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