1 . Keeping animals safe on the road
Roadkill is not a rare sight when driving down most highways and sometimes also on roadways in cities.
They chose Nanjing as the study subject, where there are more than 9,700 kilometers of paved roads. A total of nine roads were chosen for the research, including three national highways.
| A．You may not feel good about seeing roadkill |
| B．The object is to educate people about road safety |
| C．The length of the roads combined was over 224.27 kilometers |
| D．It refers to animals being hit by cars or other vehicles by accident. |
| E．Cats, dogs and blackbirds were the three commonly killed animals |
| F．In the past, research in China focused on roadkill in nature reserves |
| G．Roadkill incidents are more likely to happen in November and January |
2 . For those of us who grew up watching Star Trek, exploring space has been about discovering strange new worlds. And there are plenty of worlds to explore in time, but we still need major technological advancements to reach planets that are light years away.
What we are doing in space today is providing unbelievable benefits right now, right here on Earth. From space, we can monitor, manage and care for our planet. Satellite-based sensors show us the short- and long-term effects of human activity on our environment. Many companies are using their interest in space to help solve problems here, from using hyperspectral imaging(高光谱成像), which enable us to map vegetation(植被) and rain forests, to microsatellites that provide global connectivity for the network of things.
My company, OneWeb, is focusing on what I believe is one of the world’s most important issues: the need for equal access to the Internet. The Internet has become our economic lifeblood. And yet, nearly half of the world’s population doesn’t have Internet access. Space is playing a key role in bridging this digital divide. OneWeb is launching 1,980 satellites to help bring Internet access to people everywhere, and our first production satellites are already flying in space and have shown very high download speeds.
Fiber and cable Internet access technologies already cover most financially viable(可行的) major cities. Similarly, these regions will also be the first to be served with 5G. Poor communities are the last to get connected, and without connectivity, those communities have no chance to lift themselves from poverty. OneWeb’s satellites will reach every community in the world and enable equal access to the Internet for the world’s less developed places.
Fifty years from the day when man first walked on the moon, we are still only approaching the possible. There will be tens of thousands of new satellites, space stations and factories in the coming years to bring advancements in communications, scientific research, monitoring the earth, exploring space and more. This is exciting, but we must take action carefully.
1. What is the second paragraph mainly about?| A．Benefits space exploration can bring to us. |
| B．Problems space exploration leads to. |
| C．Steps of space exploration requires. |
| D．Equipment space exploration needs. |
| A．Increase download speeds. |
| B．Narrow the gap in Internet learning. |
| C．Help people set up and maintain a website. |
| D．Enable people to make use of the Internet equally. |
| A．More than six decades ago, man first walked on the moon. |
| B．More than half of the world’s people have no access to the Internet. |
| C．OneWeb’s satellites will make it possible for most people to be served with 5G. |
| D．Without the Internet, poor communities can hardly help themselves out of poverty. |
| A．The risks of furthering space exploration. |
| B．The value of setting up space stations. |
| C．The way we could monitor our earth. |
| D．The features of microsatellites. |
Macquarie Island was a beautiful place where its native
4 . On an October morning in 2021, ornithologist (鸟类学家) Mark A. Michaels spotted a bird in a forest, which he first thought was a duck based on its size and long neck. But then he noticed it sometimes folding its wings during flight, something he says that ducks don’t do-but woodpeckers do. “Ivory-billed woodpecker (象牙喙啄木鸟)!” he shouted, certain that the bird was a species that hasn’t been clearly identified in the wild since 1944.
Michaels has had several possible ivory-bill encounters, but he couldn’t be fully certain. This sighting was different. “That was the first time I had been absolutely sure,” he says.
But not everyone agrees this woodpecker remains in the wild. In September 2021, the US Fish and Wildlife Service (USFWS) put forward a ruling that would declare the ivory-billed woodpecker, along with 22 other species, extinct. However, the supportive data are debated. As a result, on July 6,2022, the agency gave the woodpecker an extension of six months before deciding whether to strip away its protected status (地位) as an existing endangered species.
This case highlights some challenges researchers face in determining whether a species has actually gone extinct. “It’s difficult to prove the absence of something,” says ecologist H. Resit Akcakaya, and so a lack of sightings is not necessarily evidence of extinction.
Moreover, there are costs to making the wrong call about a species’ existence in the wild. Continuing to classify (界定) an actually extinct species as endangered can misdirect financial resources away from protecting vulnerable (脆弱的) species to searching for ones that no longer exist. On the other hand, declaring something extinct when it isn’t can do further harm to a struggling species. “If we think a species is extinct, we no longer have to protect it,” Akcakaya says, “and then it may actually go extinct.”
In the case of the ivory-billed woodpecker, Michaels could do nothing but await USFWS’s ruling. But he was glad that the agency gave the extension. “I’m personally one hundred percent sure that it’s out there,” says Michaels.
1. What can we learn about the ivory-billed woodpecker from the first paragraph?| A．It was spotted many times. |
| B．It became extinct in 1944. |
| C．It looked a bit similar to a duck. |
| D．Its wings were always spread during flight. |
| A．Confirm. | B．Discuss. | C．Create. | D．Remove. |
| A．Winning the trust of the public. |
| B．Providing proof of their extinction. |
| C．Deciding which species are valuable. |
| D．Getting financial support for the research. |
| A．New protection measures will be carried out. |
| B．There will be a huge waste of financial resources. |
| C．The protection of this species will come to an end. |
| D．Researchers will conduct further studies on this species. |
5 . Researchers in Australia have identified enzymes (酶) in the body of certain beetle larvae (甲虫幼虫) that can degrade or break down plastic. In a study published in Microbial Genomics, they write that these “superworms” could help reduce plastic waste in the future.
“Superworms are like mini recycling plants, cutting up the polysyrene (聚苯乙烯) with their mouths and then feeding it to the bacteria in their stomach,” said Chris Rinke from the University of Queensland in Australia. “The breakdown products from this reaction can then be used by other microbes to create high-value chemicals.”
In the study, scientists divided beetle larvae into three groups, feeding one group wheat bran, one polystyrene and one nothing. Over three weeks, they monitored their growth. “We found that superworms fed a diet of just polystyrene not only survived, but even had marginal weight gains,” said Rinke. “This suggests the worms can get energy from the polystyrene, most likely with the help of their stomach bacteria.”
On the other hand, the plastic-fed worms gained much less weight and were overall much less healthy than the bran-fed ones, though better off than the starvation group. After three weeks, some larvae were also set aside to grow into beetles, according to the study. About 93% of the bran-fed larvae formed adult worms, while about 67% of the plastic-fed larvae and 10% of the starved larvae formed adult worms.
The researchers investigated the superworm’s stomach bacteria to find the specific enzymes linked to plastic degradation, writes Fionna M. D. Samuels for Scientific American. The enzyme that degrades the polystyrene appears to live with the stomach bacteria, not the worm itself.
Polystyrene is one of the most common plastics used today. But it’s not very chemically reactive, and breaking it down with industrial recycling methods takes high heat. So, researchers have been looking for plastic-degrading enzymes and bacteria for years.
Further research will still need to be done to figure out how to employ these worms, bacteria and enzymes in recycling facilities.
1. What does Chris Rinke compare superworms to?| A．Small plants. | B．Beetle larvae. | C．Stomach bacteria. | D．High-value chemicals. |
| A．Few. | B．Tiny. | C．Obvious. | D．Normal. |
| A．The damage of plastic to life. |
| B．Possible causes of plastic pollution. |
| C．Researchers’ efforts over the years to recycle plastic. |
| D．The necessity of finding out a way to degrade plastic. |
| A．To report a new way to recycle plastic. | B．To call on people to reduce plastic waste. |
| C．To explain how larvae can degrade plastic. | D．To introduce the findings of a new research. |
6 . Blowing Up Balloons with CO₂
Chemical reactions (化学反应) make for some great experiments. You can make use of the CO₂(carbon dioxide) given off by a baking soda (小苏打) and lemon juice reaction to blow up your balloon!
What you’ll need:
●Balloon ●About 40ml of water ●Soft drink bottle
●Juice from a lemon ●I teaspoon of baking soda
Instructions:
●Before you begin, make sure that you pull the balloon long to make it as easy as possible to blow up.
●Put the 40ml of water into the soft drink bottle.
●Add the baking soda and mix it with water.
●Put the lemon juice in and quickly put the balloon over the mouth of the bottle.
What’s happening?
If all goes well, then your balloon should inflate! Adding the lemon juice to the baking soda creates a chemical reaction and produces CO₂. The gas rises up and escapes (逸出) through the soft drink bottle. It doesn’t, however, escape the balloon, pushing it outwards and blowing it up.
1. Which of the following do you need for the experiment?| A．Two cups. | B．Apple juice. |
| C．250 ml water. | D．A teaspoon of baking soda. |
| A．Heat the water. | B．Drink some juice. |
| C．Blow up the balloon. | D．Pull the balloon long. |
| A．To describe an experiment. | B．To introduce a game. |
| C．To produce soft drinks. | D．To save some chemicals. |
7 . Finding a California condor in the wild would be the most unusual treat. perhaps even more unusual than finding a wolf in Yellowstone National Park. In fact, the wolf was what opened my eyes to the fact that humans could bring an animal back to the place where it had disappeared.
In 1987, there were only 27 California condors left, none of which were in the wild, only in captive breeding programs, It was those breeding programs that contributed to their population rise, enough that by 1991 some of them could be freed into the wild.
Still, the hope of seeing a California condor, which remains an endangered species, is very low, let alone getting a photo of one. California condor population dropped mostly due to human factors, such as poaching and living areas destruction-these are challenges California condors still face today.
Although this is just a bird’s-eye view of the challenges California condors face and there are many others, it is part of why the opportunity to work with the US Fish and Wildlife Service team and their partners helping their recovery is so special to me as a photographer. I am not only able to photograph the birds in their wild living areas, but also understand and record how difficult the work is of those people on the front lines of the protection.
I am grateful for the work of the team, and my hope is that California condor population will continue to rise allowing future generations an opportunity I never had when I first got here-to look to the sky and see one flying around.
1. What helped the increase of the California condor population in 1987?| A．Rules for hunters. | B．Captive breeding programs. |
| C．The improved natural environment. | D．The enlargement of wild living areas. |
| A．It is difficult. | B．It is easy. | C．It is boring. | D．It is dangerous. |
| A．He guided ways for them. | B．He made records by photos. |
| C．He helped the birds to recover. | D．He rebuilt the birds’ living areas. |
| A．New Way, New Hope | B．Wolves and California Condors |
| C．A Photo of a California Condor | D．The California Condor’s Coming Back |
8 . A lot of people find it difficult to do exercise regularly, even though they know it’s good for their physical and mental (身心上的) health. Yet keeping on a workout routine doesn’t necessarily go to the gym or run around your neighborhood. Gardening is a great example of a popular hobby that can be used as a workout.
Nashville resident Tom Adkinson, 72, is on board with the idea of gardening to stay fit. He has three gardens, which he uses primarily to grow tomatoes, sweet banana peppers and okra. Like traditional exercise, Adkinson does a lot of preparation before gardening, and then he spends hours watering and weeding (除草) all three gardens, involving bending and stretching, which he compares to performing garden yoga.
“It is wise of Adkinson to do so. Even though gardening may not appear difficult, using the body in new ways can make you hurt if you don’t warm up beforehand,” said Zeller, who teaches at the Rutgers Cooperative Extension of Cape May County in New Jersey.
Working in your garden just two hours a week could improve your mood. And the communal gardening, which is done by a number of people as a group in communities and schools, provides social benefits that can reduce stress and help fight against loneliness and even dementia according to studies.
“With all these benefits, gardening for fitness will be a trend (趋势) in the coming year,” announced Mandal, CEO of the fitness coaching app Future, “Our users at Future have already been asking their coaches to add gardening and landscaping activities into their routines because it’s easy to get and fit into their lifestyle.”
1. What do the underlined words “on board with” mean in paragraph 2?| A．In support of. | B．At the risk of. |
| C．Under the control of. | D．In opposition to. |
| A．Having a good rest. |
| B．Getting enough water ready. |
| C．Doing warm-up exercise. |
| D．Preparing tools for weeding. |
| A．Tips for gardening. |
| B．The benefits of gardening. |
| C．The process of garden management. |
| D．The difference between personal and group gardening. |
| A．Running. | B．Yoga. | C．Gardening. | D．Walking. |
9 . It is believed that it’s dangerous to have plants in the bedroom. Plants take in carbon dioxide (CO₂) and produce oxygen (氧气) in the day.
Firstly, how much CO₂ do plants produce at night compared with what they take in during the day?
Thankfully, in 2015, researchers at Turkey’s Kastamonu University found that large houseplants take in between six and eight times as much CO2 in the day as they produce at night.
Finally, we don’t live in the sealed (密封的) boxes in which these studies are carried out.
Let’s enjoy houseplants whenever we like, because if sleeping near plants were bad for our health, camping in a forest would be deadly.
| A．This is hard to answer. |
| B．So, they are quite necessary. |
| C．The question has more than one answer. |
| D．Besides, we often share a room with someone else. |
| E．Indoor air is being exchanged through doors and windows. |
| F．At night they compete with us for the air we breathe while asleep. |
| G．Secondly, compare the influence of a plant with that of a person sharing a room. |
10 . For most of human history, the stars shone brightly in a dark night sky. But today, cities and towns, increasingly lit by artificial light at night, dramatically reduce the visibility of stars.
Satellite data suggests that light pollution has been increasing in many parts of the world over the last decade. However, satellites miss the blue light of LEDs (发光的二极管), which are commonly used for outdoor lighting, resulting in an underestimate of light pollution.
An international citizen science project called Globe at Night (环球夜景) aims to measure how everyday people’s view of the sky is changing. The data shows that the night sky got, on average, 9.6% brighter every year. For many people, the night sky today is twice as bright as it was eight years ago. The brighter the sky, the fewer stars you can see. If this trend continues, a child born today in a place where 250 stars are visible now would only be able to see 100 stars on his/her 18th birthday.
The main factors leading to increasing brightness of the night sky are industrialization and the growing use of LEDs for outdoor lighting. The loss of dark skies threatens our ability as astronomers to do good science. But everyday people feel this loss too. Starry night skies have inspired artists, writers, musicians and philosophers for thousands of years. Light pollution also has a bad effect on the daily cycle of light and dark that plants and animals use to adjust their lifestyle. Two-thirds of the world’s key biodiversity (生物多样性) areas are affected by light pollution.
Individuals and their communities can make simple changes to reduce light pollution. The secret is using the right amount of light, in the right place and at the right time. Making outdoor lights shine downward, using lights that give out more yellow-colored light instead of white light and putting on light timers can all help reduce light pollution. A view of about 2,500 stars in a truly dark sky might convince you that dark skies are a resource worth saving.
1. How is the first paragraph mainly developed?| A．By giving an example. | B．By making a comparison. |
| C．By reaching a conclusion. | D．By raising a question. |
| A．The light pollution is getting more serious. |
| B．The night sky today gets darker than before. |
| C．It’s difficult to imagine a child’s fast growth. |
| D．LEDs are commonly used for outdoor lighting. |
| A．The bad effects of light pollution. | B．The factors causing light pollution. |
| C．The functions of starry night skies. | D．Key biodiversity areas in the world. |
| A．To explain a phenomenon. | B．To suggest a solution. |
| C．To remember a scientist. | D．To increase public awareness. |
