1 . There are two distinctive types of electric buses making their way along Nanjing Xi Lu, one of Shanghai’s busiest roads. The first is a fleet of blue trolleybuses that serve bus route number 20, a line set up by a British-run transport company in 1928. They use poles to receive electricity from wires overhead and have kept the route running in this way for nearly a century. But while the historic electric buses are a reminder of Europe’s past technological innovation, the new buses traveling alongside them are symbols of China’s contemporary net-zero ambition. These modern electric buses powered by lithium batteries (锂电池) , were introduced in Shanghai in 2014. They offer a smoother ride, especially during starts and stops. Widely used across China, these buses are key to the country’s EV transition and are influencing the global shift towards green transportation.
The most recent data available shows that China in 2018 was still the second largest source of carbon dioxide emissions in the global transport sector, responsible for 11%, and behind only the United States, which accounted for 21%. After around two decades of government support, China now boasts the world’s largest market for e-buses, making up more than 95% of global stock. At the end of 2022, China’s Ministry of Transport announced that more than three-quarters (77% or 542, 600) of all urban buses in the country were new energy vehicles. The speed of this transition was remarkable.
So far, however, the Chinese cities with the most successful e-bus introduction — such as Shenzhen, Beijing and Shanghai — all have moderate weather and are relatively flat. To take its e-bus campaign to the next level, China faces challenges. For one thing, it is difficult to bring fleets to cities such as Hong Kong, which — like London — have double-deckers. These two-storeyed vehicles are “very hard” to electrify, because they are heavier, use more energy, and so need bigger batteries, reducing the number of passengers they can carry. Cold weather is a problem, too, as it can make a battery’s charging time longer and its range shorter. The reason China has not achieved 100% electrification for its buses is its northern regions, which have cold winters, says Xue Lulu, a transportation expert at the World Resources Institute China.
1. How does the author describe the two types of electric buses in the first paragraph?| A．By contrasting their historical significance and technological advancements. |
| B．By highlighting their roles in protecting the environment and lasting use. |
| C．By focusing merely on their technical details and performance. |
| D．By explaining their operational challenges and requirements. |
| A．The global impact of carbon dioxide emissions. |
| B．The progress of China in reducing CO2 emissions. |
| C．The different emission levels of China and the USA. |
| D．The need for more government support in e-bus market. |
| A．Poor winter weather conditions. | B．Lack of transportation experts. |
| C．Short charging time of the battery. | D．Heavier and bigger bus bodies. |
| A．Worklife. | B．Culture. | C．Travel. | D．Earth. |
2 . If you haven’t taken down your Christmas tree yet, no worries. Here’s an idea: have you ever thought about eating it?
Julia Georgallis has some recipes. Over the last five years, she’s been preparing carefully for Christmas dinners in London with a friend. “How can we make something sustainable around Christmas time? What can we cat? What’s the thing that no one eats and that somehow represents Christmas? And then we just decided on Christmas trees,” Georgallis says.
She turned it into a book, How to Eat Your Christmas Tree. And her idea is that it’s not that odd. Some people enjoy Christmas wine. Some people like to go shopping and most people can get behind saving the planet.
“What I aimed for this book to do, really, was to get people thinking about the odd ways that they can be more sustainable in their daily lives,” Georgallis says.
“Eating Christmas trees isn’t going to save any animals in danger or freeze any ice caps. But if we start to think about everything that we do as a whole, then that builds up, you know, and that helps,” she says.
Most of the recipes in her book use the needles from the tree. “You’d use the needles like a herb,” she says.
“And different Christmas trees kind of have different flavors. They’re quite subtle, but they do have different flavors. So fir (冷杉), which is a really popular choice of Christmas trees, gives people better feeling and atmosphere. And then you have pine, which is a little bit more delicate.”
A warning: some Christmas trees are poisonous if eaten — like cypress and cedars. And be sure your tree wasn’t sprayed with pesticides (杀虫剂) and other chemicals. “So if you have any doubt that your Christmas tree might not have been grown to eat, then maybe don’t eat it,” Georgallis says.
And, of course, don’t even think about eating your artificial tree!
So, with all those instructions and with the appropriate tree, what could we cook? Well, Georgallis’ book has all sorts of recipes for different foods and drinks. Let’s open up the world’s cuisine with simple ingredients!
1. What’s the main purpose of Georgallis’ book?| A．To tell people not to buy real trees. | B．To inspire people to be more eco-friendly. |
| C．To teach people how to enjoy Christmas wine. | D．To encourage people to throw away odd traditions. |
| A．Artificial trees can also be cooked. |
| B．Eating Christmas trees does good to saving animals. |
| C．Different trees have different features and tastes. |
| D．All Christmas trees have their own ways to be cooked. |
| A．Tips for choosing Christmas trees. | B．Warnings for cooking Christmas meals. |
| C．Comparison between real and artificial trees. | D．Recipes for different foods with Christmas trees. |
| A．A diary. | B．A novel. | C．A scientific report. | D．A lifestyle magazine. |
3 . 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. |
4 . Back in 2007, Uruguay had a serious problem with no obvious answer: The economy was growing very fast, but there wasn’t enough energy to power the rapid
Then Ramón Méndez Galain, a physicist, started
Méndez Galain’s plan was built around two simple
To solve the problem of how to pay for all those wind farms, Méndez Galain came up with a variation on a(n)
The strategy worked
| A．decline | B．growth | C．consumption | D．program |
| A．building | B．blocking | C．repairing | D．seeking |
| A．rely on | B．find out | C．refer to | D．give up |
| A．risk | B．power | C．pollution | D．benefit |
| A．facts | B．theories | C．answers | D．principles |
| A．water | B．light | C．wind | D．ice |
| A．tended | B．undeveloped | C．protected | D．limited |
| A．break | B．put | C．send | D．turn |
| A．tool | B．software | C．image | D．approach |
| A．responsible | B．weak | C．private | D．profitable |
| A．public | B．opposite | C．rich | D．powerful |
| A．managing | B．selling | C．abandoning | D．starting |
| A．hardly | B．relatively | C．unexpectedly | D．rarely |
| A．forgotten | B．achieved | C．apologized | D．approved |
| A．income | B．food | C．supply | D．electricity |
5 . As a young girl growing up in France, Sarah Toumi dreamed of becoming a leader who could make the world a better place. Her passion to help others was awakened when, from the age of nine, she accompanied her Tunisian father to his birthplace in the east of the country during holidays. There she organized homework clubs and activities for children.
Toumi witnessed first-hand the destructive effect of desertification (沙漠化). “Within 10 years rich farmers became worse off, and in 10 years from now they will be poor. I wanted to stop the Sahara Desert in its tracks.” A decrease in average rainfall and an increase in the severity of droughts have led to an estimated 75 percent of Tunisia’s agricultural lands being threatened by desertification.
Toumi recognized that farming practices needed to change. She is confident that small land areas can bring large returns if farmers are able to adapt by planting sustainable crops, using new technologies for water treatment and focusing on natural products and fertilizers rather than chemicals.
In 2012, Toumi consolidated (巩固) her dream of fighting the desert. She moved to Tunisia, and set up a programme named Acacias for All to put her sustainable farming philosophy (理念) into action. “I want to show young people in rural areas that they can create opportunities where they are. Nobody is better able to understand the impact of desertification and climate change than somebody who is living with no access to water.”
By September 2016, more than 130, 000 acacia trees had been planted on 20 pilot farms, with farmers recording a 60 percent survival rate. Toumi estimates that some 3 million acacia trees are needed to protect Tunisia’s farmland. She expects to plant 1 million trees by 2018. In the next couple of years, Toumi hopes to extend the programme to Algeria and Morocco.
1. How did Toumi’s holiday trips to Tunisia influence her?| A．They made her decide to leave the country. |
| B．They helped her better understand her father. |
| C．They aroused her enthusiasm for helping others. |
| D．They destroyed her dream of being a teacher. |
| A．Low rainfall. | B．Soil pollution. | C．Cold weather. | D．Forest damage. |
| A．To create job opportunities for young people. |
| B．To help the children obtain a basic education. |
| C．To persuade the farmers not to use fertilizers. |
| D．To promote the protection of their farmland. |
| A．Saving Water in Tunisia | B．Holding back the Sahara |
| C．Planting Trees of Native Species | D．Fighting Poverty in North Africa |
6 . Sagarika Sriram was 10 years old when she started reading newspaper stories about a planet in trouble, one of which was about turtles with plastic in their stomachs. Sagarika knew she needed to do something. First, she joined a group which organized cleanup campaigns in her home city, Dubai “The group helped me understand what an individual can do and how I can really make a difference,” she says.
Then Sagarika created Kids for a Better World. It’s a digital platform which has brought together nearly 10,000 youths from all over the world with the goal to create a greener world.
Sagarika is now 16. She’s part of a growing number of young climate activists. “We’re the generation that is going to face the results if the climate crisis is not dealt with,” she says. She believes even individual actions can create a “ripple effect”. Sagarika says this can build momentum and can move things in the right direction.
Kids for a Better World is for people aged 8 to 16. It teaches them about what they can do to reverse climate change. They can grow food, plant trees, collect recyclables and avoid using plastic bags. “This is the information which can help change our future,” Sagarika says.
Dubai is a desert metropolis. Growing up there has made Sagarika very aware of the need for action. Her city faces the risk of rising temperatures and its water supply is shrinking. She believes young people can bring attention to these environmental challenges.
Sagarika is all about small actions, but she has big plans. She’d like to go to college in California. While she’s there, she’ll continue being an activist. She’ll also be running Kids for a Better World. She hopes to inspire others to fight for a greener planet. Others have inspired her. “We’re creating our own system of inspirational change-makers,” she says.
1. Why did the author mention “turtles with plastic in their stomachs” in paragraph 1?| A．To make a comparison | B．To give an example. |
| C．To analyze the problem. | D．To introduce the topic. |
| A．Because she wanted to create a greener world. |
| B．Because she wanted to bring together nearly1000 youths. |
| C．Because she wanted to read newspaper stories. |
| D．Because she wanted to save the turtle. |
| A．What can help change our future. | B．What people should do at present. |
| C．What Kids for a Better World does. | D．What courses are taught on the platform. |
| A．Generous and friendly. | B．Brave and smart. |
| C．Persistent and inspirational. | D．Noble-minded and careful. |
7 . Reptiles, like snakes, lizards, and crocodiles are egg-laying animals. The species are cold-blooded, which means their bodies have the same temperature as the area around them. A recent report says that more than one-fifth of the world’s reptiles are at risk of going extinct.
The study, written by 52 scientists, is the first worldwide measurement of how threatened different species of reptiles are. For 15 years, between 2004 and 2019, researchers collected information on over 10,000 different kinds of reptiles. They gathered details from over 900 reptile experts around the world.
The report has revealed some unhappy news — 21% of all reptile species are in danger of extinction. That’s over 1,800 species in all. The study reported that at least 31 species of reptiles have already gone extinct. The main reason these reptiles are faced with extinction is that humans are taking over more and more of their natural habitats. More land continues to be cleared to make room for cities and towns. Large areas of land are also being cleared so that they can be used as farmland. Logging is another big threat to reptile habitats.
But even if reptiles aren’t considered lovely, they play a very important part in nature’s food chains. One service performed by reptiles humans should appreciate is that they are natural enemies to certain pests, like insects and rats, and therefore helping control their numbers.
Scientists say the good news is that we know what must be done to protect reptiles. Bruce Young, one of the leaders of the research, says, “We have all the tools we need. Protecting natural areas, especially rainforests, is at the top of the list. Studies show that saving natural areas doesn’t just protect mammals or birds, but all kinds of animals, including reptiles.”
1. What can we know about reptiles from the report?| A．There are over 10,000 different kinds of reptiles worldwide. |
| B．Reptiles are cold-blooded egg-laying animals. |
| C．Over 20% of reptile species are at risk of dying out. |
| D．Temperature rising poses the greatest threat to reptiles. |
| A．Loss of habitats. | B．Human hunting. |
| C．More natural enemies. | D．Environmental pollution. |
| A．Attractive. | B．Intelligent. |
| C．Beneficial. | D．Dangerous. |
| A．Improving breeding methods. | B．Developing new rainforests. |
| C．Strengthening cooperation. | D．Saving their natural habitats. |
8 . Transport is undergoing a massive transformation so it can meet society’s demands for a low- carbon economy. Introducing electric vehicles (EV) and declining gasoline use are helping, but zero-carbon hydrogen can speed up both the transition (转变) and long-term decarbonization of transport.
In the US, transportation produces the largest share of all greenhouse gas emissions (排放) in the economy at 29%, according to the Environmental Protection Agency. More than 90% of transport fuel is petrol based, but if more vehicles used hydrogen, emissions of this kind would plummet.
However, hydrogen is not considered an ideal replacement for gasoline as an engine fuel for cars because it is harder to store safely. And while fuel cell electric vehicles (FCEVs) that turn hydrogen into electricity can compete with EV performance-and even out-compete them on range and refill time, extra energy is needed to produce the hydrogen needed for fuel. Also, finding investment for storage, pipelines and fuel stations is still a challenge for many nations.
Currently, governments worldwide are backing green hydrogen projects to reduce greenhouse gas emissions in heavy industries like freight (货运), steel, and energy storage. But hydrogen transport will need rapid production methods to create the fuel needed for the world’s road fleet.
Thankfully, research is advancing all the time. Nanoscale (纳米级的) thin films are applied to improving the chemical process to rapidly harvest hydrogen from the seawater. The same technology has been successfully used in solar power devices with higher efficiency-to-cost rates. Since hydrogen is the most abundant element in the universe and as seawater makes up about 96% of all water on Earth, there is a virtually limitless supply.
Even wastewater and solid waste can create green hydrogen. Researchers at Princeton University are using sunlight to separate hydrogen from industrial wastewater. Chemical plants that currently face high costs for cleaning wastewater could transform it into clean hydrogen supplies.
1. What does the underlined word “plummet” mean in Paragraph 2?| A．Stop. | B．Decrease. | C．Continue. | D．Disappear. |
| A．Ways of storing hydrogen safely. |
| B．Benefits of fuel cell electric vehicles. |
| C．Challenges of using hydrogen as car fuel. |
| D．Differences between gasoline and hydrogen. |
| A．The application of solar power devices. |
| B．The method of identifying water elements. |
| C．The invention. of the water transport system. |
| D．The use of the nanoscale thin-film technology. |
| A．Clean Energy Hydrogen Ready to Take Off |
| B．Traditional Fuels Bound to Reach a Dead End |
| C．How We Can Generate Energy from Hydrogen |
| D．What the Future of Transportation May Be Like |
9 . Two hours west of a perfectly sunny summer’s day in Clackamas, Oregon a foggy breeze awaited me on the Lincoln City coast. After a year of volunteering remotely with Ocean Blue Project, today is a long-awaited beach cleanup.
I didn’t expect to take away more than just trash from the beach cleanup. At first glance, the beach appears clean. However, beach cleanups require much more attention than a quick look over. Within just a couple of hours, 71 of us volunteers managed to pick up 171 pounds of debris. Actually, we’ve got much more than that.
Beach cleanups connect us to nature and provide an escape from the world for a little bit. They also provide a learning opportunity outside of the participation part. When you sit over a pile of—let’s face it—garbage, you pick out one by one the pieces left behind by others. You see first hand the impact we’re having on our environment and account for what is left behind the most. Each cigarette butt and plastic bottle sets the tone for how we should be approaching our everyday lives, which is to stop pollution.
Personally, the time spent by the ocean and away from my phone fills me with peace and calmness as I focus my attention only on the moment, looking for the little devils trying to pollute the ocean. With a pound or two less out of the ocean, I always feel a bit more optimistic about the world to come.
This boots-on-the-sand way of making a difference grants me a feeling of accomplishment and purpose. Rather than pondering the dire task of saving the planet or researching and writing ways to do so, I get to physically make a difference. And there’s nothing that can replace that instant gratification of making positive change for your community and your planet.
After the cleanup, my eyes are now expertly trained to spot loose trash and inorganic materials anywhere I step. Imagine what a huge difference we could all make collectively if we simply stopped and picked up that water bottle or wrapper off the ground instead of passing it by.
1. Which of the following can best describe the author’s first beach cleanup with Ocean Blue Project?| A．Effortless and far-reaching. | B．Annoying but rewarding. |
| C．Painstaking but fruitful. | D．Demanding and inefficient. |
| A．Maintaining good physical health. |
| B．Gaining great insight into oceans. |
| C．Developing researching ways to save the earth. |
| D．Improving our mental health. |
| A．Satisfaction. | B．Gratitude. |
| C．Impression. | D．Curiosity. |
| A．What I’ve Learned from a Beach Cleanup |
| B．How Well I Performed in a Beach Cleanup |
| C．How Much Attention a Beach Cleanup Requires |
| D．Why Volunteering with Ocean Blue Project Matters |
10 . Imagine driving down a 10-lane highway and knowing that, high above your head, a mountain lion is quietly going along its way. This remarkable image could soon be the reality for drivers on one of California’s busiest roads, as the world’s largest wildlife overpass(天桥) begins construction in April.
The history-making project will comprise a green bridge built across the 101 highway near Los Angeles, creating a passage between two parts of the Santa Monica Mountains. The overpass will allow safe passage for lizards, snakes, mountain lions, etc. with an acre of local plants on either side and vegetated sound walls to dampen light and noise for night-time animals as they go across.
The project, nearly a decade in the making, comes at a crucial time. Beth Pratt, a conservation leader with the National Wildlife Federation, feels as if she is running the last mile of a marathon. Pratt has spent most of the last decade planning the project, persuading transportation officials of its importance, and bringing donors to fund it.
The project is breaking records in many ways: not only is it the largest crossing in the world, but it’s also an engineering wonder. Robert Rock, a landscape architect who led the design, says this nature-centered type of construction makes it unusual among other wildlife bridges and underpasses around the world, which are typically made of cement(水泥)and steel. This one is designed to integrate into the environment on both sides — and send a message to the people driving below.
About 300,000 cars pass through this area each day, and Pratt calls it an opportunity for millions of Angelenos to see how humans can live more harmoniously with nature.“Someone could be in rush-hour traffic, and there could be a mountain lion right above them,”she says. “I think that’s such a helpful image, and one that inspires me that we can right some of these great wrongs.”
1. Why is the overpass built?| A．To attract visitors to watch the wildlife. |
| B．To help animals cross over a highway. |
| C．To bridge two mountains near Los Angeles. |
| D．To allow more traffic during rush hours. |
| A．It is a long journey. |
| B．It comes a little late. |
| C．It has little official support. |
| D．It has brought economic benefits. |
| A．It stands out among similar structures. |
| B．It does harm to the local environment. |
| C．It has got little attention from engineers. |
| D．It has inspired constructions worldwide. |
| A．It’ll transform the image of the state. |
| B．It’ll provide pleasant habitats for animals. |
| C．It’ll be a reminder for us to care about nature. |
| D．It’ll create job opportunities for the local people. |
