1 . Atmospheric (大气层的) rivers are long and narrow bands of water vapor (水蒸气) in Earth’s atmosphere, which are called “large rivers in the sky”. These rivers form over warm ocean waters. They are huge. They can be 930 miles long and one-third that wide.

Like real rivers, they carry huge amounts of water. These large streams of small water drops are blown by wind over land. When that happens, the water vapor cools down and condenses (凝结). Atmospheric rivers can be good. They bring water to dry areas. However, they can cause huge, fast-moving storms. Some cause snowfalls that bury towns. They are also the main cause of floods on the U.S. West Coast.

Atmospheric rivers are hard to predict. But scientists are working to change that. Marty Ralph, a scientist who works at the University of California, directs the Center for Western Weather and Water Extremes (CW3E). They created the first computer model to predict atmospheric rivers on the U.S. West Coast. This model uses a program that runs on a computer to create a model of a real-world event. CW3E also studies atmospheric rivers using planes. Pilots drop instruments into atmospheric rivers to collect information like temperature and wind speed, which helps with forecasting.

Will climate change affect atmospheric rivers? Climate change happens naturally over a long period of time. But today, it is largely caused by human activities and is causing the Earth to warm, which affects atmospheric rivers.

Atmospheric rivers are pushed by the wind. Those winds are driven by the temperature differences between the poles and the equator (赤道). But the poles are also warming faster than areas near the equator. That makes the temperature difference between the areas smaller. This can make winds weaker.

Climate change might not cause more atmospheric rivers. But there may be very, very wet seasons and very, very dry seasons. Such a seesaw in rainfall could make it harder to manage what water there is.

1. What can we learn about atmospheric rivers?

A．They can be 930 miles long and 465 miles wide.

B．They are easy to predict as scientists are working on it.

C．They are bands of water vapor forming over warm ocean waters.

D．They are the main cause of floods in the U.S.

2. What is the third paragraph mainly about?

A．Why it is hard to predict atmospheric rivers.

B．Whether scientists can predict atmospheric rivers.

C．How technology helps the prediction of atmospheric rivers.

D．How scientists are working on the forecasts of atmospheric rivers.

3. What does the underlined word “seesaw” mean in the last paragraph?

A．Growth.

B．Drop.

C．Prediction.

D．Change.

4. Where is the text probably taken from?

A．A textbook.

B．A science magazine.

C．An academic article.

D．A news report.

2 . Lying in the Mexican state of Oaxaca, the fishing village Huatulco is home to nine bays, 36 beaches and thousands of baby turtles that apparently needed me. I had three open days on my calendar, and a desire to save some turtles. And so, away I went to Huatulco with Wildcoast, a group of champions-for-change who were protecting coastal and marine ecosystem in the U. S. and Mexico.

I was taken to La Escobilla to experience Wildcoast in action. Just one hour north of Huatulco, this protected beach is where mass turtle nesting happens. This natural phenomenon lasts just four days during rainy season, hundreds of thousands of female sea turtles swinging their way ashore to lay their eggs.

Between threats of dogs, crabs, development and oil spills, the little creatures have the whole world against them. As recently as 2002, turtles hunting was not only a common practice, but an important part of the culture and diet in the Oaxaca communities. Luckily, Wildcoast rescues turtle eggs and recreates habitats by monitoring temperatures and humidity. Thanks to their efforts, the sea turtles have made a major comeback, with now over 72 million turtles being born on the beaches that Wildcoast protects.

I got to hold 50 of the tiny creatures in a bowl. Despite an average laying of 100 eggs, just one in 1, 000 baby turtles will make it to adulthood. Gazing into the bowl, I so badly wanted them to taste the sea and find shelter somewhere deep in the ocean. Finally, it was time to liberate those little creatures. Out spilled the creatures, some moving full steam ahead while others barely paddled in place. Literally, hundreds of them began to spread out across the beach.

With each set of waves, we witnessed the survival of the fittest, some pushing past the whitewash while others crashed back to shore. Their fight for life made my eyes wet. A flock of birds were ready to dive into the sea for their moving targets. “One in 1, 000.” Nature was cruel and compassionate at the same time. After 30 long minutes, the last creature made his way to the sea.

1. The baby turtles are threatened by various factors except ________.

A．the cruel hunters	B．the rapid development
C．the extreme weather	D．the oil-polluted ocean

2. What do the underlined words “full steam ahead” in paragraph 4 mean?

A．With slow pace and fear.	B．With all energy and enthusiasm.
C．With full caution and curiosity.	D．With great satisfaction and responsibility.

3. What does the author indicate by mentioning “One in 1,000” in the last paragraph?

A．One baby turtle in 1,000 can make his way to the sea.

B．Thousands of baby turtles were crashed back to shore.

C．The struggle of baby turtles for life touched the author.

D．Baby turtles can hardly survive the harsh living conditions.

4. What can we learn from the author’s experience in saving baby turtles?

A．Think twice before you leap.	B．God helps those who help themselves.
C．Cease to struggle and you cease to live.	D．When the buying stops, the killing can too.

3 . A team of psychologists led by Dr. Karen McComb at the University of Sussex in the UK have discovered an effective way for humans to communicate with cats through slow blinking (眨眼睛), similar to how cats interact with each other.

Dr. McComb and her team conducted two experiments to study this phenomenon. In the first study, owners were instructed by researchers Tasmin Humphrey and Andrew Wood to slowly blink at their cats from a distance while being recorded. Humphrey and Wood found the cats were more likely to respond with slow blinking of their own compared to when no interaction took place.

To follow up on these findings, McComb, Humphrey, and Wood designed a second experiment without considering the exsisting relationship between humans and cats. Researchers, including McComb, performed the same slow blinking action. Like in the first experiment, the cats in this study also responded more favorably to slow blinking by returning the gesture and more readily approaching an extended hand, according to Humphrey’s analysis.

The slow blink expression involves partially closing the eyes briefly, copying a relaxed, friendly facial expression in humans. McComb notes that for cats, it appears to signal good intentions as constant staring could be seen as threatening. Wood says that cats may have developed this language to acknowledge humans who react positively to the signal. Being able to effectively communicate acceptance in this subtle cat way seems to strengthen the bond between cats and their owners, McComb adds.

McComb, Humphrey and Wood hope their findings can provide insight into cat behavior and thinking. They also aim to apply this knowledge of cross-species communication to evaluate cat health in various places like veterinary (兽医的) clinics and shelters, according to Humphrey. A deeper understanding of how cats interpret and respond to humans can improve our ability to properly care for household and outdoor cat populations, McComb concludes.

1. How was the second experiment different from the first one?

A．It recorded the interactive behavior of cats.

B．It required cat owners to blink from a distance.

C．It studied how cats communicate with each other.

D．It focused on how cats react to strangers’ slow blinking.

2. Why may cats develop slow blinking according to experts?

A．To attract their owners’ attention.

B．To show friendliness to other animals.

C．To respond to humans’ positive reactions.

D．To send out a signal for help to their partners.

3. What do the researchers hope to apply their findings to?

A．Improving cat behavior and habits.

B．Assessing health conditions of cats.

C．Developing ways to treat cats’ diseases.

D．Helping cat owners train their cats quickly.

4. What does the text mainly talk about?

A．Humans can communicate with cats by blinking slowly.

B．Extending hands to cats can strengthen the bond with them.

C．Cats respond favorably to humans’ friendly facial expressions.

D．Understanding cat signals improves humans’ ability to care for them.

4 . “Consumers complain that the modern tomato has little flavor. It’s like a water bomb,” said Sanwen Huang, who works at the Agricultural Genomics Institute at Shenzhen at the Chinese Academy of Agricultural Sciences. “Tomato farmers care about yield, and the genetic variants related to yield are not related to tasty tomato favors.”

How can farmers ditch this unpleasant thing and recover the rich, sweet flavor of the tomato? To find out, Huang and colleagues investigated which genes are related to tomatoes’ taste. The scientists created a 100-person group that sampled 160 tomatoes based on sensory qualities. Based on the group’s feedback, the researchers identified dozens of chemical compounds (化合物) that could be related to the tomato’s taste. Using a statistical model that determined the concentration of various chemicals in the tomatoes, the scientists identified 33 most important flavor compounds. The researchers then measured the content of them in each of the tomatoes, and identified about 250 genetic loci (基因座) that controlled tomato flavor. This finding revealed the genetic basis of tomato flavor.

But the researchers also wanted to determine why store-bought tomatoes don’t taste good. It turns out that modern tomato varieties are selected according to qualities such as big size because buyers prefer large fruit, and firmness because it makes tomatoes easier to ship. Meanwhile, the quality of flavor has been ignored, said the researchers.

Volatiles (挥发性物质), in particular, are essential for good flavor. The removal of specific volatiles from tomatoes results in significant reduction in people’s liking. Moreover, refrigeration can change a tomato’s volatile compounds.

“But there is hope for a future filled with tasty, new varieties of store-bought tomatoes, as our results provide a road map for improvement of flavor. By working together, geneticists, biochemists, farmers and customers can provide better-flavored tomatoes for our society.” Huang said.

1. How does the author present the study in paragraph 2?

A．By giving a definition.	B．By listing figures.
C．By analyzing the cause.	D．By making a comparison.

2. What is the main idea of paragraphs 3-4?

A．The reasons why stores favor such tomatoes.

B．Some qualities consumers prefer in buying tomatoes.

C．The importance of volatiles in deciding tomato flavor.

D．The reasons why store-bought tomatoes have little flavor.

3. Which of the following statements will Huang probably agree with?

A．The store-bought tomatoes have a promising future.

B．Yield-related genetic variants provide tasty tomatoes.

C．Their research has changed a tomato’s volatile compounds.

D．Farmers and customers can certainly provide better-flavored tomatoes.

4. What’s the purpose of the text?

A．To persuade readers to buy tomatoes.

B．To introduce the high yielding tomatoes.

C．To prove store-bought tomatoes are tasteless.

D．To inform readers of the research about tomato flavors.

5 . The long-awaited return journey of female giant panda Ya Ya, who has lived in the Memphis Zoo in the US state of Tennessee for 20 years, finally started on Wednesday local time, according to media reports. The news resulted in heated cheers of Chinese netizens as they had been closely watching and looking forward to Ya Ya’s return for months over concerns about the giant panda’s health.

Ya Ya had left the Memphis Zoo in Tennessee, the US, starting her journey back to China on Wednesday morning, the Xinhua News Agency reported. When asked about the latest progress on Ya Ya’s return journey, Chinese Foreign Ministry spokesperson Mao Ning said at the Wednesday press conference that Ya Ya would soon return to China as arranged. “Related parties in China and the US are actively promoting related preparations and arrangements,” Mao said.

According to information released by Chinese flight tracking platform Feichangzhun, FedEx special flight FX9759 would take off at 12:05 p. m. on Wednesday US time from the Memphis airport for the Shanghai Pudong International Airport. The flight duration is estimated to be nearly 16 hours. Many netizens volunteered to go to the Shanghai Pudong Airport to welcome Ya Ya and Le Le. “I am sure there will be a crowd of people there for them! We all want to see them land in the motherland safely!” said a Weibo user.

Ya Ya was born in the Beijing Zoo in August 2000. In April 2003, as part of a cooperation program on the protection and research of giant pandas between China and the US, Ya Ya and Le Le, a male panda from the Shanghai Zoo, were flown to Memphis.

Since the beginning of 2021, there have been continuous reports about the poor health conditions of Ya Ya and Le Le, with heart-wrenching photos surfacing online. After passing away of Le Le in February, pictures of the weak Ya Ya caused a stronger impact on the Chinese social media, leading many netizens to call for the early return of Ya Ya.

1. What can we infer from the text?

A．Ya Ya is twenty years old now.

B．Related parties care little about Ya Ya.

C．Many netizens are very concerned about Ya Ya’s health.

D．Ya Ya will reach Shanghai at about 4:00 a. m. on Thursday Beijing time.

2. What does the underlined word “released” in paragraph 3 probably mean?

A．Changed.

B．Announced.

C．Developed.

D．Achieved.

3. What made Ya Ya so weak in the USA?

A．Le Le’s death.	B．Missing her motherland.
C．Too many people’s concern.	D．No clear reason mentioned.

4. Where can this text come from?

A．A news report.	B．A travel journal.
C．A science fiction.	D．A popular magazine.

6 . People who work with octopuses(章鱼)or who spend a lot of time in their company describe the sense that when you look at an octopus, there is something looking back. Given this feeling as a starting point, how do you begin to explore the consciousness(意识)of an animal so unlike ourselves?

Imagining an octopus’s inner life is a hard thing to do from our human standpoint. When you picture the tips of your suckered limbs moving, what do you imagine it feels like? “The octopus’s arms are, in some ways, more like lips or tongues than hands,” says Godfrey-Smith, a professor of history and philosophy of science. “There’s a great deal of sensory information that’s coming in every time the animal does anything. That’s very different from our situation.”

Take a closer look at the octopus’s nervous system, and things get even stranger. The octopus’s arms have more autonomy than our human arms and legs do. Each has its own minibrain, giving it a degree of independence from the animal’s central brain. Our own nervous system, however, is highly centralized, with the brain the center of sensory integration, emotion, movement, behavior and other actions.

The closer you look at the octopus’s body and nervous system, the harder it becomes to grasp—or believe you are grasping—what it might be like to be an octopus. However hard it might be to do, it’s worth trying to understand whether octopuses have consciousness, and what it’s like if they do, says Godfrey-Smith. This is why the octopus is such an interesting case. Octopuses are different enough from us that a lot of our assumptions about them have to be questioned—and even our assumptions about ourselves. “By asking whether octopuses are conscious like us, we might be asking a question that doesn’t make a lot of sense because we don’t fully know what it’s like to be conscious,” says Godfrey-Smith.

1. What does the author try to do in paragraph 1?

A．Introduce his special feeling about studying octopuses.

B．Share his unique experience of working with octopuses.

C．Inspire the readers’ interest in learning about octopuses.

D．Show the meaning of studying consciousness of animals.

2. In which way are the octopus’s arms special according to Godfrey-Smith?

A．Their structure.	B．Their function.
C．Their movement.	D．Their number.

3. How is paragraph 3 mainly developed?

A．By listing statistics.	B．By analyzing causes.
C．By giving examples.	D．By making comparisons.

4. What can we know about octopuses from the last paragraph?

A．Octopuses are really similar to humans in some way.

B．More work is needed to study octopuses’ consciousness.

C．Most assumptions about octopuses are completely wrong.

D．It makes no sense to research if octopuses are conscious.

7 . A giant sunfish, about nine feet long, was caught on camera by kayakers off the coast of California. Ocean sunfish and southern sunfish are the world’s biggest bony fish, and they are both found in the Pacific Ocean. Adult ocean sunfish may reach more than 4,000 pounds, which is the same weight as an adult male rhinoceros (犀牛).

During a trip off the coast of Laguna Shore on December 2, Rich German and his friend Matthew Wheaton came across the massive sunfish just a few hundred yards from the beach. They then dialed 911. According to German, who talked to the media, this was the biggest sunfish that any of them had ever encountered.

Sunfish are a genuinely global species that can be found all over the world, but they spend their whole lives in the open ocean. Therefore, encounters like these are few and far between.

German captured images and footage of the sunfish. An underwater close-up shot of a sunfish as it wanders past the camera is included in one of the short films. “It was a one-of-a-kind and really interesting event,” German said of the most recent encounter, which he described as “another indication of why we need to conserve the ocean and the incredible creatures that call it home.”

Beyond its particular shape without the caudal fin (尾鳍), the species also surprises us with its impressive size, up to 3.10 meters long, which allows it to have few natural enemies. However, as a great lover of jellyfish (水母), its greed for food often leads it to confuse plastic bags with its favorite dish, making seawater pollution one of its main threats alongside overfishing.

Behind its impressive size, the sunfish is a harmless swimmer who today faces many threats. The sharp decline observed among its populations is due not to other sea animals of which it would be the food but to human activities which participate in destroying its habitat.

1. Why is the chance to encounter sunfish off the coast small?

A．It has impressive size.	B．Its habitat has been destroyed.
C．It usually lives far from the coast.	D．An adult ocean sunfish is too heavy.

2. What does German think of the encounter?

A．Encouraging and pitiful.	B．Interesting and dangerous.
C．Anticipated and incredible.	D．Impressive and meaningful.

3. What do we know about sunfish according to the text?

A．It’s greedy for food to support.	B．It’s threatened by other sea animals.
C．It suffers from seawater pollution.	D．It mistakes jellyfish for plastic bags.

4. Which could be a suitable title for the passage?

A．The Biggest Sunfish in the World Was Encountered

B．Why We Need to Conserve the Ocean as the Habitat

C．Sharp Decline Observed Among Sunfish’s Populations

D．Giant Ocean Sunfish Filmed off the Coast of California

8 . Sixteen miles off the windswept coast of northern Scotland, the future of renewable energy is taking shape. Turning rhythmically in the breeze, the five enormous turbines of the Hywind Scotland wind farm look like any other off-shore wind project, except one major difference — they’re floating.

While conventional offshore turbines sit atop mental and concrete towers fixed into the seabed, Hywind’s turbines rest on floating steel structures that rise and fall with waves. Carefully balanced, they remain upright despite the waving conditions. This simple sounding, yet extremely complex design is changing the way green developers view offshore wind.

It could prove to be an important development as the world attempts to meet the net zero carbon emission targets that countries committed to in the Paris Agreement on Climate Change. The energy department as a whole currently accounts for around three quarters of all the greenhouse gases emitted by human activity.

To cut those emissions, green electricity will need to be at the main source of global energy, according to the International Energy Agency. It says that by 2024, half of the world’s energy needs will have to be met by electricity produced in a net zero way.

With growing numbers of electric vehicles, combined with increased demand for electricity to replace fossil fuels in domestic and industrial uses, electricity networks will also need to become far more flexible with more ways to generate and store energy. It means that by 2045, our energy network could look thoroughly different to the way it does today. Projects like Hywind’s floating wind farm offer a present-day glimpse of what the future could look like.

While floating turbines overcome some of the issues that make offshore wind farms in deep waters impossible, there are still challenges to be overcome. There are some concerns about what impact large wind turbines might have on the marine environment. The price of floating wind projects is also still high — costing almost twice as much per megawatt hour of electricity produced compared to bottom-fixed offshore wind. But those costs are expected to drop as the technology becomes increasingly advanced, as has been seen with other wind energy projects, helping pave the way towards net zero emissions, and a future powered by carbon-free fuel.

1. Which of the following words can replace the underlined word “emitted” in the third paragraph?

A．Released.

B．Replaced.

C．Wasted.

D．Influenced.

2. What is the author’s opinion on floating wind projects?

A．Disapproving.

B．Objective.

C．Doubtful.

D．Indifferent.

3. What is the author’s purpose of writing this text?

A．To share his research on energy.	B．To call on people to save energy.
C．To replace the traditional fossil fuels.	D．To introduce a clean renewable energy.

10 . Stripy and Jake are baby bears. They are fed by bottle and play around happily. Other bear orphans are sitting in the trees when Ben Kilham goes into their area.

Kilham, an American bear whisperer, lives in the woods of New Hampshire. His life work is all about understanding black bears, winning him not just international fame, but also greater insight into humankind.

From the bear photos and paintings on the wall to the three little wooden bears welcoming visitors at the entrance, everything in his home shows his passion. So does the nearby 3-hectare area. This is where he cares for orphan baby bears that are entrusted (委托) to him each year by the New Hampshire Fish and Game Department. With their mothers perhaps shot dead or knocked down by a car, Kilham cares for the baby bears. He makes sure they grow up safe and well, before releasing them back into the wild at the age of 18 months.

In addition, he observes adult bears in the wild. His dedication to black bears has made   him such an expert that China asked for his help with the giant panda. After a quarter of a century of study, Kilham has no doubt that bears are as close to humans as great apes, even though, as he says, “apes are our closest genetic relatives.”

Kilham has released 165 bears back into the wild and recorded more than 1,500 black bear interactions in nature. Recently his work led to a PhD in environmental sciences. He has written articles in National Geographic and a popular book, Among the Bears, which came out in 2002.

His goal is to raise awareness of caring about bears feared and hunted in the United States. Around 10 to 15 percent of New Hampshire’s 5,000 to 6,000 bears are killed every year in the hunting season.

“Bears are not interested in people. They are afraid of us. We can live very easily with bears; it’s a matter of educating the public,” says Kilham.

1. What is Ben Kilham’s daily job mainly about?

A．Studying different kinds of wild animals.

B．Protecting humans from being hurt by bears.

C．Training bears to communicate with humans.

D．Taking care of baby bears that lost their mothers.

2. What does the underlined word “dedication” in paragraph 4 probably mean?

A．Devotion.	B．Exposure.
C．Contribution.	D．Assistance.

3. What is the author’s purpose of writing this passage?

A．To call on people to protect the environment.

B．To tell people to keep away from black bears.

C．To tell people about Ben Kilham and his studies.

D．To introduce Ben Kilham and his book—Among the Bears.