1 . This Is What Your Dog’s Behaviors Should Tell You
A straightened tail
When you see a dog’s tail in the air, that dog probably feels very excited or confident about something. If its tail is shaky and remains up, the dog probably just feels challenged in a way. Whenever a dog is content, its tail is always leveled with its body. However, if the tail is hanging low, this shows some kind of insecurity.
Chewing your furniture
When puppies start teething, they start chewing things around. It just means that they have not been getting as much physical activity as their body needs. You can easily help by taking them out for a nice walk or helping them exercise in some other ways.
Tilting (倾斜) their heads
When you are talking to dogs, you subconsciously end up speaking in a higher pitch. The dogs tip their heads in an attempt to understand what you are telling. Dogs have a great way of reading different body language and responding to vocal cues. They recognize specific words especially those associated with treats they love or walks. A certain theory states that dogs will move their heads in that manner as a way of adjusting their ears so that they can listen better.
Raising their ears
When you see a dog raise its ears, just know it’s listening keenly to you. It happens when they are unfamiliar with a certain sound and are trying to figure the sound out. So when you see this, just allow your dog to figure out things slowly for a second. After all, it’s very nice to have a dog that is observant.
1. If a dog keeps its tail hanging low, it suggests it feels _______.| A．satisfied | B．thrilled | C．unsafe | D．challenged |
| A．Tie the dog. | B．Walk the dog. |
| C．Feed the dog. | D．Bathe the dog. |
| A．Waving its tail. | B．Moving its head. |
| C．Raising its ears. | D．Showing its teeth. |
2 . When this year’s all-woman team arrived on Antarctica’s Goudier Island to run the world’s most remote post office, it was shovels they needed rather than stamps.
They’d traveled some 8,000 miles from the UK, by plane and boat, and Britain’s Royal Navy had helped them dig out their new home at the Port Lockroy scientific base, which was buried up to four meters deep under several tonnes of December snow.
It wasn’t just the frozen wastes that first struck postmaster Clare Ballantyne, who at 23 years old was the baby of the four-woman group. It was that “there’s penguins everywhere.”
More than a thousand Gentoo penguins live on this tiny island on the western side of the Antarctic peninsula (半岛), around the size of a soccer field. Since 1944, when the UK’s first permanent Antarctic base was established here, it’s also become a shelter for explorers, scientists and — in recent years — tourists.
Each year, a team is selected to run and maintain the site from November to March, or summertime in the southern hemisphere. Around 4,000 people applied for this job, but just four made the cut: Ballantyne, base leader Lucy Bruzzone, wildlife monitor Mairi Hilton and shop manager Natalie Corbett.
The job also involves counting penguins: The scientific data they gather on the Gentoos’ breeding patterns is part of a decades-long study of the colony.
When it comes to choosing candidates, “there is no recipe we can follow,” says Ballantyne. “It’s about your ability to work together as a team. Cheeriness goes a long way, being able to see the light in life and resolve problems quickly.”
Ballantyne notes that there has been “a bit of a decline in recent years in the breeding success” of the Gentoo penguins, but says “the causal connect ion is the tricky bit.” While climate change is probably “the biggest driver,” they also need to carefully examine if there’s a “human element” as well. In her opinion, Antarctica tourism has boomed significantly in the past couple of decades, but there aren’t legally enforced limits on tourism, which hopes to be a regulated industry.
1. What is the task of the all-woman team?| A．Making out all the living habits of penguins. | B．Serving as postmasters and environmentalists. |
| C．Designing stamps linked to the Antarctic peninsula. | D．Managing a post office including counting penguins. |
| A．It’s situated on the eastern side of the Antarctic peninsula. |
| B．Some scientists use it as a soccer field in their spare time. |
| C．It’s fit for man to study the Antarctic and live temporarily. |
| D．The number of the penguins on it has risen sharply. |
| A．Being optimistic, competent and cooperative. | B．Being sensitive, courageous and determined. |
| C．Being hardworking, modest and empathetic. | D．Being independent, elegant and generous. |
| A．Climate change leads to the decline of penguins. | B．Polar tourism desires for improved management. |
| C．Humans and penguins live in peace in the Antarctic. | D．Antarctica tourism has influenced climate change. |
3 . ▶Western Sydney University
The university undertakes ranges of sustainability-related research, including sustainable agriculture, soil biology and food security. It has a range of living labs on its campus to aid with teaching and research in areas such as renewable energy, water recycling and natural and cultural heritages.
▶University of Reading
The university offers a range of modules on environmental and social issues to all undergraduate students, regardless of which faculty they are studying in. There is also a free online two-week course where you can investigate the impact of climate change and the research being done into it. The university has a range of sustainability projects, including the Research Woodland and the Undergraduate Research Opportunities Programme.
▶University of Manchester
The university has a range of sustainability measures on campus to reduce waste. The Want Not, Waste Not shop on campus sells a selection of zero-waste products including spices, pulses, cleaning products and beauty products. The university is also working to reduce plastic at all its events, by replacing balloons with paper bunting, using potato-based tokens instead of plastic ones and eliminating plastic water bottles and printed flyers.
▶Manchester Metropolitan University
In April 2021, the university launched the Give It, Don’t Bin It” campaign, which encourages students to donate unwanted items and leftover food to charity partners, including the British Heart Foundation and Manchester Central Food Bank. Donation banks and boxes are situated all over campus. Students wishing to get involved in sustainability can choose from a range of initiatives across campus, including the Sustainability Ambassador scheme and Climate and Social Action Week. Students also run a clothing swap shop and MetMUnch, a student network that focuses on training and pop-ups all around food, nutrition and sustainability.
1. Which university focuses on global climate?| A．University of Reading. | B．University of Manchester. |
| C．Western Sydney University. | D．Manchester Metropolitan University. |
| A．It aims to find more renewable energy. |
| B．MetMUnch focuses on air improvement. |
| C．It has earned a reputation in controlling poverty. |
| D．Its “Give It, Don’t Bin It” helps those in need. |
| A．Development and improvement. | B．Recycling and sustainability. |
| C．Kindness and generosity. | D．Science and technology. |
4 . Should we hide in the “Triangle (三角) of Life” when the earthquake comes?
At 1:39 on June 15, a magnitude (里氏) 3.1 earthquake occurred in Qingpu District, Shanghai, with a focal depth of 8 kilometers. Earthquakes are one of the major natural disasters, so how to avoid danger and self rescue during earthquakes has become a topic of great concern.
There has always been a saying on the Internet that when an earthquake comes, collapsed objects and solid large objects will form a triangular space around them(the “Triangle of Life area”), and hiding in this area will have a greater probability of survival, which many people believe deeply.
In this regard, the China Earthquake Administration said that although observing the ruins after the earthquake, we can find that there are similar triangular spaces in some places.
However, when an earthquake occurs, people cannot know in advance the way of the earthquake, the direction of the collapse of buildings or objects, and it is difficult to know where there will be the so-called “Triangle of Life”.
The “Triangle of Life area” was proposed by an American disaster relief worker named Kupp, who believed that traditional self-help methods such as drilling tables were no longer suitable for people living in modern buildings. The collapsed floor structure would crush the tables or beds for refuge, and only hiding in the triangle area could survive.
Although the “Triangle of Life area” self-help method has been popular for more than ten years. However, the American Red Cross, the California State Emergency Service Office and earthquake experts have all pointed out the irrationality of the “Triangle of Life”. The Chinese Ministry of Emergency Management has also provided a refutation explanation.
In fact, after an earthquake, the internationally recognized most reliable method of self rescue is ‘lying on the ground, blocking, and holding onto your hands’. You should lie down, squat down, or sit down, try to lower the center of gravity of the body, and protect important parts such as the head, neck, eyes, and mouth and nose.
1. What information can we learn about the “Triangle of Life” in the first three paragraphs?| A．The Triangle of Life area is an official definition. |
| B．Many people believe in the “Triangle of Life”. |
| C．The earthquake in Shanghai has caused panic among the masses. |
| D．When an earthquake strikes, one should hide in the triangle area. |
| A．To protect himself | B．To overthrow the government |
| C．To avoid earthquakes | D．To attract attention |
| A．Its unpredictability | B．Its out-of-date construction |
| C．Its instability | D．Its illegality |
| A．Newspaper | B．Horror Book | C．History Book | D．Science Magazine |
5 . Between 20 and 40 per cent of planet Earth is covered in grasslands, across every continent except for Antarctica. Grass is a low-growing, flowering plant with groups of narrow leaves growing from its base. Strong roots typically hold this plant’s leaves firmly to the ground.
One of the most common sights along stretches of grass is grass-eating animals. This is because many large animals rely on extensive grasslands to survive, and grass grows well with this regular trimming (修剪). The plants gain their energy from sunlight and require healthy cells to do so. If the leaves aren’t cut, the tips die and start to rot. When they are damaged with a clean cut, however, the cells are caused to grow quicker and produce new, healthy tissue. This is also why cutting your garden’s grassland regularly can make your grass look thicker and healthier.
Humans rely on grass for food, too. Many grasses, such as w heat or corn, are harvested as a main part of some diets. Meanwhile, grass is used indirectly to produce food in the form of livestock (牲畜). Cattle farmers require grass in their fields to feed cows and sheep before they are turned into meat for human consumption.
One of the most debated questions is how long ago grass evolved. Because grass doesn’t preserve well as a fossil, a definitive answer is hard to come by. Until recently, many scientists estimated that grass began to grow on Earth between 50 and 65 million years ago.
However, within the last decade, a piece of 100-million-year-old amber (琥珀) was found that appeared to contain the oldest grass fossil to date. Studies of fossilized dinosaur faces (粪便) also suggest that some dinosaurs lived at the same time that grass grew on the planet, incorporating it into their diets.
1. What is the function of the roots mentioned in Paragraph 1?| A．To fix the leaves to the soil. | B．To store water and nutrients. |
| C．To support the growth of the plant. | D．To protect the plant from animals. |
| A．By improving soil quality. | B．By encouraging cell growth. |
| C．By preventing the tips from dying. | D．By attracting more animals to eat them. |
| A．Grass doesn’t preserve well as a fossil. | B．There are no fossils of grass available. |
| C．There is no solid evidence of its evolution. | D．Scientists can’t agree on its origin. |
| A．The Variety of Grass | B．The Development of Grass |
| C．How Grass Change Life | D．How to Make Grass Grow Well |
South Koreans have enjoyed their first close-up look of new baby giant pandas at a name-revealing ceremony that is also
What to name the twin sisters was widely discussed among netizens after they were born on July 7 in theme park Everland. The names were
The baby pandas,
Everland said it would monitor the twins’ health
7 . Scientists have been experimenting with playing sounds to plants since at least the 1960s, during which time they have been exposed to everything from Beethoven to Michael Jackson. Over the years, evidence that this sort of thing can have an effect has been growing. One paper, published in 2018, claimed that an Asian shrub known as the telegraph plant grew substantially larger leaves when exposed to 56 days of Buddhist music — but not if it was exposed to Western pop music or silence. Another, published last year, found that marigolds and sage plants exposed to the noise of traffic from a busy motorway suffered growth difficulty.
Plants have been evolving (进化) alongside the insects that eat them for hundreds of millions of years. With that in mind, Heidi Appel, a botanist now at the University of Houston, and Reginald Cocroft, a biologist at the University of Missouri, wondered if plants might be sensitive to the sounds made by the animals with which they most often interact. They recorded the vibrations made by certain species of caterpillars (毛毛虫) as they chewed on leaves. These vibrations are not powerful enough to produce sound waves in the air. But they are able to travel across leaves and branches, and even to neighbouring plants if their leaves touch.
They then exposed tobacco plant — the plant biologist’s version of the laboratory mouse — to the recorded vibrations while no caterpillars were actually present. Later, they put real caterpillars on the plants to see if exposure had led them to prepare for an insect attack. The results were striking. Leaves that had been exposed had significantly higher levels of defensive chemicals, making them much harder for the caterpillars to eat. Leaves that had not been exposed to vibrations showed no such response. Other sorts of vibration — caused by the wind, for instance, or other insects that do not eat leaves — had no effect.
“Now speakers with the right audio files are more often being used to warn crops to act when insects are detected but not yet widespread,” says Dr. Cocroft. “Unlike chemical pesticides, sound waves leave no dangerous chemicals.”
1. What can we learn about plants from the first paragraph?| A．They may enjoy Western music. | B．They can’t stand Buddhist music. |
| C．They can react to different sounds. | D．They can make different sounds. |
| A．Plants can make a cry for help. | B．Plants evolve alongside insects. |
| C．Plants are sensitive to the sounds. | D．Plants have been studied for years. |
| A．They can recongnize harmful vibrations. | B．They look like laboratory mice. |
| C．They can threaten the caterpillars. | D．They can release poisonous chemicals. |
| A．Disadvantages of chemical pesticides. | B．Application of the experimental results. |
| C．Interaction between plants and insects. | D．Warning system of widespread insects. |
8 . In Canada, you can find dogs, cats, horses, etc. in almost every family. These are their pets. People love these pets and have them as their good friends.
Before they keep them in their houses, they take them to animal hospitals to give them injections (注射) so that they won’t carry disease. They have special animal food stores, though they can get animal food in almost every kind of store. Some people spend around two hundred Canadian dollars a month on animal food. When you visit people’s houses, they would be very glad to show you their pets and they are very proud of them. You will also find that almost every family has a bird feeder in their garden. All kinds of birds are welcomed to come and have a good meal. They are free to come and go and nobody is allowed to kill any animal in Canada. They have a law against killing wild animals. If you killed an animal, you would be punished. If an animal happened to get run over by a car, people would be very sad.
People in Canada have many reasons to like animals. One of them might be: Their family ties are not as close as ours. When children grow up, they leave their parents and start their own life. Then the old will feel lonely. But pets can solve this problem. They can be good friends and never leave them alone.
1. The passage mainly talks about ________.| A．how to keep disease from pets | B．pets in Canada |
| C．how to take good care of pets | D．life of the old in Canada |
| A．the pets are sick | B．the pets are wild |
| C．they want to stop them from carrying disease | D．they want them to sleep on the way home |
| A．hate animals | B．often kill animals | C．love animals | D．don’t keep pets inside houses |
| A．they don’t love their parents any more | B．they can only find jobs far from their parents |
| C．their parents’ houses are too small | D．they wouldn’t depend on their parents any more |
9 . Scientists say baby sharks are at risk of being born smaller and without the energy they need to survive because of warming oceans from climate change.
Scientists studied epaulette sharks, which live off Australia and New Guinea. They found that warmer conditions expedite the sharks’ growing process. That meant the sharks were born earlier and very tired. The findings could be used in the study of other sharks, including those that give birth to live young.
The scientists studied 27 sharks. Some were raised in average summer water temperatures, about27 degrees Celsius. Others were raised in higher temperatures around 29 degrees Celsius and 31 degrees Celsius. They found that the sharks raised in the warmest temperatures weighed much less than those raised in average temperatures. They also showed reduced energy levels.
Epaulette sharks can grow to a length of about one meter. Their name comes from large spots on their bodies that look like decorations on some military clothing.
One study this year found that worldwide numbers of oceanic sharks and rays dropped more than70 percent between 1970 and 2018. Overfishing is a main concern, while climate change and pollution also threaten sharks.
Carolyn Wheeler is a doctoral student at the University of Massachusetts Boston and with the ARC Centre of Excellence for Coral Reef Studies at James Cook University in Australia. She is the lead author of the epaulette shark study. She said that while all the sharks survived, those raised in warmer temperatures were not strong enough to survive for long in the wild.
She added that if the sharks are born smaller than usual, they are probably going to have to start looking for food sooner, and they’re going to have less time to adjust to their surroundings.
The study should serve as a warning to ocean governing agencies that careful management is needed to prevent the loss of more sharks.
1. What does the underlined word “expedite” in paragraph 2 mean?| A．Accelerate. | B．Slow. | C．Cause. | D．Influence. |
| A．By studying former data. |
| B．By tracking sharks in the wild. |
| C．By collecting information about climate change. |
| D．By comparing sharks in waters of different temperatures. |
| A．They are named after a military officer. |
| B．They can’t adapt to new surroundings quickly. |
| C．They are dying mainly because of climate change. |
| D．They would die soon after birth in warmer temperatures. |
| A．The reasons for sharks’ loss. | B．The measures to preserve sharks. |
| C．The function of the government. | D．The warnings about the endangered sharks. |
10 . While they can’t pick out precise numbers, animals can comprehend that more is, well, more. From birds to bees and wolves to frogs, animals use numbers to hunt, find a mate, return to their home, and more. Researchers believe that this ability, known as numerical competence, plays an important role in how animals make these decisions. Andreas Nieder, a biologist at the University of Tübingen, explores the current literature on how different animals comprehend numbers.
Honeybees, for instance, can remember the number of landmarks they pass when searching for food in order to find their way back home. This ability can also be seen in animals choosing a larger amount of food over a smaller amount or in animals forming hunting groups. Wolves are more likely to hunt successfully if they have the right number of wolves in their pack for their prey (猎物) with prey like elk (驼鹿), only around six to eight wolves are needed, while hunting wild pigs requires a pack of nine to thirteen. Their prey also uses this concept to protect themselves—elk tend to live in small groups, which rarely have encounters with wolves, or gather in large groups to reduce the chance of any individual becoming prey. “They are assessing the number of individuals in their groups for their everyday life situations,” Nieder says.
Furthermore, numerical competence also plays a role in attracting a mate. For example, male frogs sing “advertisement” calls to attract females. The females, listening to their complicated calls, choose the males that sing the most “chucks” in their calls.
Now researchers do have some sense of the rules that govern numerical competence in animals. For example, they count approximately (大概) rather than specifically and two numbers need to be more different for them to tell them apart as those numbers get bigger. However, Nieder argues that more research needs to be done. “I hope I can encourage behavioral ecologists to specifically explore numerical competence in the wild, and, in doing so, also open new research fields,” he says.
1. What do the examples of wolves and elk suggest about numerical competence?| A．It gives animals a reproduction benefit. | B．It affects animals’ chances of survival. |
| C．It is decided by animals’ hunting ability. | D．It develops well in social animals. |
| A．By listing figures. | B．By asking questions. |
| C．By giving examples. | D．By making comparisons. |
| A．Its fundamental rules. | B．Its appeal to behavioral ecologists. |
| C．Researchers in new study fields. | D．Expectations for further studies. |
| A．Animals’ understanding of numbers gives them an advantage |
| B．Numerical competence research achieves a breakthrough |
| C．Animals develop numerical competence? Never |
| D．Can many animals count? Better than you |
