1 . Directions: Fill in each blank with a proper word chosen from the box. Each word can be used only once. Note that there is one word more than you need.

A. houses   B. approaching   C. appear   D. talent   E. exclusively F. lowered   G. hiding   H. limits   I. dramatically   J. natural   K. sensitive

Dolphin Senses

New research involving trained dolphins seems to further prove that these animals can sense electricity. The     1     may allow them to better lock onto hidden fish hunted and direct the path.

The ability to sense electric fields is known as electroreception(电感受). All animals produce a weak electric field, but electroreception has almost     2     been found in water creatures. About a decade ago, scientists published research suggesting that some dolphins have passive electroreception. And in 2021, researchers in Germany released their own study finding that dolphins likely have it, too.

This new research is a follow-up to that latter study by the same team—one intended to better describe the     3     of electroreception in bottlenose dolphins. The researchers teamed up with scientists from the Nuremberg Zoo, which currently     4     six dolphins. They specifically worked with two bottlenose dolphins named Donna and Dolly. They first trained them to rest their jaws on a metal bar in the water, and then to respond to an electric field     5     them by swimming away within five seconds. They then gradually     6     the strength of this field to test the dolphins’ sensitivity.

The findings further prove that bottlenose dolphins can indeed sense electricity, but suggest that some dolphins are better at it than others. Donna, for instance, was a bit more     7     and able to respond correctly to a weaker field than Dolly.

The electroreception found in dolphins doesn’t     8     to be as strong as it is in the typical shark, but it’s probably still useful enough for them to find fish     9     underneath sand, stones or mud within a few centimeters away. Other studies have suggested that dolphins also possess a sense that acts as a sort of     10     GPS for them. So these dolphins’ electroreception might provide an explanation for that ability as well, Huttner said.

2 . 阅读下面短文，掌握其大意，然后用方框中所给词的适当形式填空。每个词限用一次。

mouse   be   eat   health   stop   few   hungry   say   see   sometimes   body

Snake meat is popular in restaurants. Some people think eating snakes is good for their     1    . But these people don’t know that snakes feed on     2     and worms (虫), so there are many parasites (寄生虫) in snakes’     3    . They may     4     bad for our health. And we’re sorry     5     a butcher’s knife kill more snakes now.

An English newspaper     6    , “People eat about 1,000 tons of snakes every year in China. In Shenzhen,    7    , people serve 10 tons of snakes on dinner tables in a day. ”

If we continue (继续) to    8     snakes, there will be a vicious circle (恶性循环). If people eat more snakes, snakes are becoming fewer and fewer. But mice are becoming more and more, there will be     9     crops.

This will make more people     10    . Who wants to see such a bad thing happen? So people must     11    eating snakes. To protect snakes is to protect ourselves.

3 . Directions: Fill in each blank with a proper word chosen from the box. Each word can be used only once. Note that there is one word more than you need.

A. inky   B. ashore   C. facility   D. worldwide   E. female   F. conclusions   G. double    H. confused I. Talk   J. preservation   K. typically

Several deep-sea fish have been mysteriously washed up on California’s beaches this year, leaving marine biologists     1    .

The latest Pacific football fish to be washed     2     in the state was spotted near Encinitas last Friday. A surfer found the strange fish dead on Swami’s Beach and alerted lifeguards, who then notified scientists. Scientist Ben Frable then collected the unusual animal for research and     3     purposes.

The fish is black, almost spherical in shape and has sharp teeth. It has a strange external body sticking out from its head with multiple branches, used to attract prey in the     4     blackness of the deep ocean.

The fish found on Swami’s Beach is a mature     5     measuring nearly 13 inches in length and weighing around 5.5 pounds.

Pacific football fish are very rarely seen considering that they are     6     found at depths of between 650 and 2,600 feet. Only 31 known fish have ever been collected     7    and it has never been seen in the wild, so scientists know very little about the species.

Despite the fact that the fish are rarely seen, three of them have been washed up on California’s beaches this year —including one that was spotted last month at Black’s Beach, north of San Diego. The three sightings this year     8     the total number of sightings on record in California, and it’s the     9     of the town among the experts working at the Los Angeles County Natural History Museum, which has four fish in its collection.

Despite the series of recent sightings, experts said, it’s hard to jump to any     10    about why this is happening.

4 . Directions: Fill in the blank with a proper word chosen from the box: Each word can be used only once. Note that there is one word more than you need.

A. dramatic   B. concerns   C. frequently   D. threats   E. revealed F. emerge   G. previously   H. keep   I. deepened   J. native   K. exist

The reason for the mysterious deaths of hundreds of elephants

When hundreds of African savanna elephants dropped dead in Botswana’s Okavango Delta in 2020, conservationists were alarmed. As the death toll rose — from dozens in March to more than 350 animals by July — their     1     increased, especially because nobody knew what was happening. A short time later, the mystery     2     when 34 more individuals of the endangered species died across the border in northwestern Zimbabwe in a three-week period, with one more found in November. “It was very quick,” says Chris Foggin, a vet who examined the elephant carcasses (尸体) in Zimbabwe. “That was so     3    .”

African savanna elephants     4     to this area represent the majority of what’s left of that species. Around 350,000 African savanna elephants remain, and given the already significant     5     to their survival, a new disease could be what tips that last domino towards extinction.

Now, new research published recently in Nature Communications points to a bacterium not     6     found in elephants of any species, called Bisgaard taxon 45, that causes a massive systemic blood infection called septicemia. “It’s a disease we know can kill a reasonable number of elephants in a short space of time,” says Foggin, co-leader of the study. And “it has the potential to kill a lot more given the right circumstances.” What those are, however, remains unknown — yet it’s pressing to find out. Aerial population surveys in KAZA in 2022 found a high number of new elephant carcasses. The examination     7     the elephants had enlarged livers and spleens, as well as internal bleeding in multiple organs — signs of septicemia (败血症).

However, scientists still don’t know how widespread Bisgaard taxon 45 is, or if the bacteria     8     as a normal group of bacteria within elephants and other animals. “We’re assuming it’s probably present more     9     than we’ve known, without causing disease, but we don’t have proof of that,” Foggin says. It’s possible environmental stressors, such as heat and lack of food and water, may have led Bisgaard taxon 45 to multiply and cause the septicemia in the Zimbabwe elephants. With much of Africa predicted to get hotter and drier, the bacterium “could cause much worse mortalities down the line,” says Foggin. That’s why, he says, “it is important to     10     monitoring elephant deaths and see if it’s responsible.”

5 . Directions: Complete the following passages by using the words in the box. Each word can only be used once. Note that there is one word more than you need.

A. approach B. beneficiaries C. recently D. eliminates   E. nutrients F. practices G. irreparable   H. threat   I. undesirable   J. panic K. naturally

The Beneficial Effects of Forest Fires

Forest fires are undoubtedly a threat. In the mid-1900s, all forest burns were considered     1    , and firefighters responded to all of these fires whether or not they were burning close to where humans lived. This     2     to forest fires was both expensive and risky. However, more     3     forest managers began to see that forest fires did have benefits. Foresters saw that forest fires were beneficial for trees and soil.

Previously, people believed that forest fires caused     4     damage to trees, however, now forest managers know that trees are the major     5     of fires. Many     6     occurring forest fires, often caused by lightning strikes, are surface fires that burn the understory — the shrubs and herbs from the forest — without damaging the trees in the overstory. In this way, the fire     7     competition from the smaller trees, allowing the larger trees to flourish. Once the understory has been burned away, the forest is less likely to burn from high-temperature fires that can do real damage to the tall trees.

In the past, it was not obvious how forest fires enriched the soil. Today, foresters understand that forest fires improve soil quality by changing the ‘litter’ — dead leaves and branches on the forest floor — to nutrient-rich soil. Normally, litter decomposes very slowly. However, fire releases the     8     in the litter immediately. This creates an increase in the amount of phosphorus and potassium which are key elements that promote tree growth.

As forest managers have leared more about the long-term effects of forest fires, they have realized that forest fires can have beneficial effects and have changed their forest management     9     to reflect this new opinion. It is now recognized that forest fires, are a natural part of forest ecosystems and are beneficial to the trees and soil. As long as fires are no     10     to homes and communities, foresters now often choose to do nothing to stop the fires.

6 . Directions: Fill in each blank with a proper word chosen from the box. Each word can be used only once. Note that there is one word more than you need.

A awareness       B. clear       C. encourage       D. ignore E. immediate       F. limiting       G. redesigning       H. significantly I. team       J. theme       K. unlikely

Go Recycling

No one looking at the state of Earth in 2023 can be in any doubt that we are facing three serious environmental problems: climate problem, loss of biodiversity (生物多样性) and pollution of air, soil and water. To solve the problems, we increase the use of electric cars,     1     greener eating and reduce plastic use. However, sometimes these solutions can be opposite to the expected goals. For instance, creating space for biofuel crops to give off fewer pollutants and greenhouse gases can, in fact,     2     increase the cutting down of trees. That means in most cases solutions aiming at one problem each time are     3     to be effective. And, what is perhaps lacking is a(n)     4     of how interlinked these problems are.

We should realize that a key     5     linking all the three problems is waste. The root cause of global warming is CO₂, a waste gas. The seas are polluted by plastic and other waste products. We     6     forests, among other things, to grow more food — much of which goes to waste.

A shocking figure lies at the heart of our special report on our world — of the more than 100 billion tons of things that humans use each year, hardly 10% is recycled. That makes it obvious a full-range war on waste should be paid     7     attention. The situation requires our speedy moving away from the way of thinking — “take, make, throw” — towards a more recyclable one, which means we should begin     8     the products and when they reach the end of their useful lives, they can be recycled.

Solving the three problems calls for a huge transition with joint efforts. Governments must take the lead by introducing laws with the purpose of rewarding green practices, such as the     9     of waste. Industries can reduce, re-use and recycle wherever possible, and     10     themselves with suppliers and the like-minded to realize recyclable business models.

7 . Directions: Complete the following passages by-using the words in the box. Each word can only be used once. Note that there is one word more than you need.

A. typically          B. limited            C. markings             D. items            E. treated F. fenced             G. fear               H. packs                    I. gently            J. present          K.pair

Red foxes exist throughout much of the United States, with the exception of the southwest. In Chicago, they are not common in high numbers, but are still     1    in certain areas of the city. Coyotes(丛林狼) usually compete with red foxes, and the large coyote population and     2    living space in Chicago maybe related to the small number of red foxes.

Red foxes are     3    smaller than coyotes, weighing 7-15 pounds on average and standing up to 20 inches. Easily recognizable by their striking redcoats, red foxes also have black     4    on their feet, black-tipped ears, as well as along tail.

Generally living alone, red foxes do not form     5    like other dog-like animals. Adults    6    during the breeding(繁殖) season to raise their young in hidden places, such as fallen trees, or other natural or artificial structures. As omnivores(杂食动物), red foxes eat a variety of foods including rabbits, birds, insects and fruits. Red foxes may store food in buried locations where they pile up     7    to eat later. Sometimes they are killed by coyotes and humans. They are also easily affected by harmful skin diseases that can lead to death if not     8    .

When digging homes under buildings, red foxes may come into conflict with people. Sometimes foxes may hunt outdoor cats or chickens. Keep cats indoors and get these areas     9    to prevent foxes entering. As with any wild animal, it is important to never feed red foxes, as this may cause them to lose their natural     10    of humans and exhibit unusual behaviors.

8 . Directions: Fill in each blank with a proper word chosen from the box. Each word can be used only once. Note that there is ONE WORD MORE than you need.

A. voyaged     B. barely     C. renowned     D. abnormality     E. discipline     F. navigable G. unprecedented     H. eyed     I. Fortunately     J. accessible     K. degradation

For voyager and green promoter Zhai Mo, the 504-day non-stop voyage to the Arctic Ocean has stimulated his concern about the climate and awareness of his responsibilities.

Navigating more than 28,000 nautical miles (51,856 kilometers) in harsh conditions, Zhai, a (n)     1     Chinese explorer, returned to Shanghai on his aluminum sailboat on Nov 17, along with two crew members, becoming the first man to successfully circle, both ways, the Arctic Ocean without stop. “This non-stop Arctic Ocean circle route can be said to be     2    . We     3     both the northeast and northwest routes while previous explorers only chose one route. This is a self-challenge and transcendence in the history of human navigation,” the 54-year-old says.

Zhai undertook this task as an ambassador of the Chinese navigation science and marine public welfare, and also the ForNature Campaign of the United Nations Development Program. He set sail on June 30 last year to raise public awareness of global warming, climate change and land     4    . During the trip, he crossed the East China Sea, the Western Pacific, the Bering Strait, the Chukchi Sea, the East Siberian Sea and the Beaufort Sea. He saw dolphins, whales, walruses, sea lions and seals, as well as shoals of cod and wolf fishes.

“When we passed through the Northwest Pacific Ocean on our way back, we encountered three typhoons within a week, which     5     happened in the past,” Zhai recalls.

Zhai didn’t see any floating ice during his one-week voyage in the Kara Sea while the previous meteorological data showed ice there.

“My own experience tells me that climate     6     is obvious now,” Zhai says.

The voyage, to enter the Arctic Ocean from the Bering Strait before making a round trip returning to Shanghai, was planned to take four months, but the return schedule was delayed for more than a year. “As soon as we entered the Bering Strait, we encountered a polar cyclone. A large number of ice floes and icebergs were blown to the coast. However, the Arctic Ocean can only be     7     near land, so we had been carefully crossing between ice floes and icebergs for a long time and the speed was only 1 to 3 knots,” Zhai says. But for Zhai, the most difficult part of the whole voyage was around 75 degrees north. The Arctic Ocean is known as the “dead channel”, Zhai says, adding that the location where the Titanic went down was on his route and dotted with countless icebergs. After entering the iceberg region, Zhai navigated the sailboat while the two crew members went on watch to report on the menacing ice. Despite the precaution, the boat hit an iceberg near Greenland, causing water seepage below the waterline that had to be dealt with. Meanwhile, compasses and electronic goods on the boat failed because of the magnetic field. “I had never encountered this situation in sailing before,” says Zhai.     8    , he took a fiber optic compass specially used for high latitude navigation, and managed to leave this area with visual aids. In addition to ice floes and icebergs, Zhai and his team also faced severe tests such as heavy fog, strong winds and huge waves. When sailing through the Chukchi Sea, the boat navigated around a large area of ice floes and heavy fog resulting in visibility of no more than 10 meters. They spent nearly 11 hours to get just 50 nautical miles. “We tried to leave as soon as possible during our voyage in the Arctic Ocean,” he says, adding that there was a constant danger of being trapped by the ice.

Zhai was attracted by sailing when holding an art exhibition abroad in 2000. In 2007, he got a second-hand sailboat with simple supplies, such as instant noodles, pancakes and potatoes, and started his voyage trip around the world.

After that 35,000-nautical-mile voyage, Zhai     9     an Arctic Ocean journey. “Navigation is a comprehensive     10    . You should know not only astronomy but also geography. You also need to be a carpenter, fitter, hammerer and painter, and should be able to survive in a harsh, outdoor environment,” Zhai says.

He adds that he hopes more young people would participate in navigation, to promote and publicize the ocean awareness and navigation spirit. He is preparing for the third voyage trip around the world next year or the year after that. “Antarctica is also a very big challenge. I hope to explore more unknowns, and I also want to launch a transoceanic sailing competition.”

9 . Directions:   Fill in each blank with a proper word chosen from the box.   Each word can be used only once.   Note that there is one word more than you need.

A. carved          B. unknowingly            C. ecosystem          D. artificial          E. elemental F. changing       G. practically        H. wrinkled        I. unmoving          J. species       K. inspection

Magical Creatures: AN APPRECIATION OF AUTUMN MOTH (蛾)

Moths seem to have a bit of a bad reputation: to some they are ill indications or something scary, to others they are dull in comparison to our well-loved butterflies. But moths are an essential part of a(n)     1    , and important food sources for species like birds and bats. And for me, moths are far from dull.

My first meeting with an Angle Shades moth was nearly a non-encounter. I almost passed by without noticing it, thinking it was a fallen leaf on a fence post. But there was something about it that stopped me in my tracks. Its angular shape perhaps? Or the way it sat,     2    , despite the breeze. Closer     3     revealed cream and buff shell-shaped wings, painted with triangles of light pink and brown. Suddenly, it transformed from a(n)     4     leaf into a living thing before my eyes. I’ve been fascinated ever since.

The Canary-shouldered Thorn, with its hairy buttercup-coloured body and yellow and orange wings, reminds me of a fallen silver birch (白桦树) leaf. A night-flyer, it favours gardens and woodlands, and is often drawn to     5     light, meaning that your torch beam may be attracting moths as well as lighting your way in the dark. It’s also worth double-checking any leaves in farm houses, as these sheltered spots are a favourite hiding place of another overwintering     6    : the Herald moth. This elegant creature’s beautiful wings look as though they’ve been     7     by hand and painted with bronze.

There’s more to these imitators than fallen leaves. The Green-spotted Crescent, which     8     disappears on rough branches, has metallic green spots integrating with the moss (苔藓). Maybe I’ve already     9     crossed paths with one, though. As we dig out our big coats and slip on boots for walks beneath branches, how many moths are we missing? These clever creatures aren’t bad indications, but     10     parts of nature, with a gift for fancy-dress.

10 . Directions: Fill in each blank with a proper word chosen from the box. Each word can be used only once. Note that there is one word more than you need.

A. alarming B. carbon-intensive C. durability D. glued E. labels F. man-made G. manufacturing H. recycle I. redefine J. samples K. share

How sustainable are your sneakers?

Over the last five years the sneaker industry has grown rapidly and shows no sign of slowing down. The global athletic footwear market is expected to exceed 95 billion (USD) by 2025. According to the World Footwear Yearbook, over 24 billion pairs of shoes are produced annually. Among them sneakers account for the largest     1    . What are the environmental impacts of the rapidly growing sneaker industry?

Sneaker production is very     2    . A typical pair of running shoes produces about 13.6 kilograms of CO₂ emissions which is unusually high for a product that does not use electricity or require power-driving components.

These emissions mainly come from     3    . The majority of sneakers are made from plastic and/or plastic-like materials. All these petroleum-derived plastics produce a(n)     4     number of carbon dioxide.

Then why don’t we move away from the use of plastic? Since sneakers have to endure much more than a regular pair of shoes, the aspect of their     5     is very important when it comes to their overall performance. Unfortunately,     6     materials hold up better than natural ones. Plastic has made shoes better, lighter, faster, more comfortable, and more accessible to everyone worldwide. Another issue with sneakers today is that most of them are made by using a combination of different plastics     7     in a very complicated way, making them very hard to     8    .

The footwear industry is at least 10 years behind the rest of fashion in terms of environmental standards. Seven out of ten brands are having discussions on sustainability, yet only 40% of companies have a sustainability program in place. Big industry players (such as Adidas and Nike) and some smaller     9     are trying to reduce their carbon footprint in different ways.

Considering that close to 25 billion pairs of shoes were produced worldwide in the last year, it is clear that immediate action is very important. It is my hope that we consumers will     10     our relationship with fashion and think about the environmental impact of our shopping habits.