1.介绍活动；
2.你的看法；
3.欢迎他参加。
注意：
1. 词数 80 词左右；
2. 开头和结尾已给出，不计入总词数；
3. 可适当增加细节，以使行文连贯。
Dear Alan,
I’m excited to tell you about the campus activities to celebrate the second National Ecology Day on August 15, 2024.
___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Best regards,
Li Hua
2 . Food accounts for one-third of greenhouse gas emissions(排放量), but it does not yet get the attention it deserves. With global meat consumption on the rise, the truth is, we need to break bad habits before they break us. Plant-based nutrition can deal with climate change in many ways.
Did you know that one of the most effective ways to lower your carbon footprint is to eat a plant-based diet? NASA climate scientist Peter Kalmus documented his own personal experiment in low-energy living in Being the Change: Live Well and Spark a Climate Revolution.
He was able to reduce his personal carbon footprint tenfold, from 20 to 2 tons per year, by some lifestyle changes. Kalmus is a vegan(纯素食者), bikes to work, doesn’t fly, is a keen gardener and hangs his clothes out to dry. He also found living mindfully made him feel happier and even halved his food bill. Kalmus says it’s possible for the average person to cut their emissions easily. The average meat-eater in the US emits 3, 000 kg CO2 per year compared to 1, 000kg for vegans.
Another way to deal with climate change is to grow your own food. “Some of the juiciest strawberries that satisfy my taste buds were grown at home last summer in hanging baskets using organic seeds.” Kalmus said. “As well as plenty of nutritious, cheap and delicious foods, growing my own food has allowed me to get to know my neighbors. We share seeds, wisdom, and tasty soup.” Besides, composting(制作堆肥) leftovers and yard waste diverts green matter from landfills that produce the greenhouse gas and instead can help build healthy soil.
Globally, our meat-and dairy-heavy diet uses around half of habitable land on Earth to produce food. Nevertheless, with plant-based diets, we could feed the world with one quarter of the land, allowing us to return vast areas of land to nature.
1. What is the purpose of eating a plant-based diet according to the author?| A．To handle climate change. | B．To reduce living costs. |
| C．To draw public attention. | D．To record carbon footprints. |
| A．It relieves him of mental stress. |
| B．It slightly cuts the carbon footprint. |
| C．It proves impossible for meat-eaters to follow. |
| D．It benefits individuals and the environment. |
| A．develops | B．redirects | C．sends | D．delivers |
| A．Self-grown food turns out to be of higher quality. |
| B．Producing food has taken up half of the land on Earth. |
| C．Growing food helps strengthen neighborhood relations. |
| D．Greenhouse gas emissions have little to do with food consumption. |
3 . Around 50 million acres of forests in Russia were almost swallowed up by enormous fires two years ago, the country’s worst fire season on record. Now, researchers are more aware of just how significant the north forest fires were in terms of emissions. The fires produced more planet-heating carbon dioxide than any other extreme fire event that has occurred since the turn of the 21st century, according to a study.
North forests grow where it is very cold. The trees that live in this type of forest grow slowly and store carbon in their trunks and roots for hundreds of years, comprising a collection of trapped emissions that researchers call a carbon sink. But rising temperatures and related drought in these historically cool regions have led to an increase in extreme wildfire activity and threaten to release the carbon stored in the trees that grow there, transforming a carbon sink into a carbon source.
In all, fires in north forests released the carbon sink and produced nearly half a billion metric tons of carbon in 2022. That’s more carbon than the entire continent of Australia produced the same year, though some of the emissions produced by the fires will be sucked back up as forests regrow.
The researchers obtained the data for their study by tracking concentrations of emissions in the atmosphere using satellites, and then they put that information into a computer model to determine where, geographically, those emissions came from. They found that north forests, which typically produce about 10 percent of the globe’s annual wildfire emissions, accounted for 23 percent of the world’s wildfire emissions in 2022—more than twice as much as normal.
Canadell, who led the study, is most concerned about the study’s main takeaway, north forests have served an important and underappreciated role in isolating carbon emissions, but climate change threatens to release that carbon. “We need to be very careful with these systems in terms of their future development,” he said.
1. What is the main idea of paragraph 2?| A．To indicate the seriousness of the fire. | B．To illustrate two scientific concepts. |
| C．To explain the source of carbon. | D．To show the importance of north forests. |
| A．By turning to the firefighters. | B．By searching on the website. |
| C．By analyzing previous data. | D．By employing technology. |
| A．Assessing. | B．Preventing. | C．Monitoring. | D．Increasing. |
| A．To show the reasons for the forest fires in the north. |
| B．To state the increasingly growing carbon emissions. |
| C．To prove the impact of the north forest fires. |
| D．To explain the link between fires and carbon dioxide. |
4 . “There’s a little black woman walking, spraying (喷洒) stuff on the sidewalks and trees on Elizabeth and Florence...” he told the police. Her neighbor saw her spraying something on the sidewalks and trees and this made him worried. In the call to 911, he described the child as “a little black woman”.
Well, the “little black woman” was actually 9-year-old Bobbi Wilson, a young scientist. The fourth-grader had created her own insecticide (杀虫剂) to fight spotted lanternflies (斑衣蜡蝉). She came across the recipe on TikTok and had recently learned that the harmful species damages trees because they feed on their sap (树液). Bobbi was simply testing out her invention in her neighborhood when the police call was made.
“That’s her thing,” her mother Monique Joseph said. “She’s going to kill the lanternflies, especially if they’re on a tree. That’s what she’s going to do.” Bobbi’s 13-year-old sister, Hayden Wilson, also defended her, noting that Bobbi “was not only doing something amazing for our environment, but she was also doing something that made her feel like a hero”. Luckily, what happened didn’t influence Bobbi’s spirit and has led to some positive experiences for her.
She has since been recognized by several organizations for her environmental efforts. She has also been invited on special tours. One took place at the Princeton Plasma Physics Laboratory. Another was given by the United States Department of Agriculture of New Jersey at a plant where they discussed lanternflies. But that’s not where her recognition ends! The Association of New Jersey Environmental Commissions (ANJEC) honored Bobbi with their Sustainability Award for her work to save trees and fight lanternflies.
“We were excited that she was doing that,” Ann Marchioni of the ANJEC said. Ann added that the organization praises volunteers for being “hands-on” in their community. In addition to the award, she and her family got to visit with a group of black female scientists at Yale University. They showed her various labs and even invited her to donate lanternfly specimens (标本) for the university’s work.
1. What made the neighbor call the police?| A．A girl climbing trees. | B．A girl spraying something. |
| C．A girl littering the sidewalks. | D．A girl testing something dangerous. |
| A．Ashamed. | B．Proud. | C．Shocked. | D．Relieved. |
| A．Those whose donations help ANJEC. |
| B．Those who can do something creative in their university. |
| C．Those whose environmental awareness is quite impressive. |
| D．Those who can do something practical in their community. |
| A．Creative and determined. | B．Watchful and serious. |
| C．Friendly and generous. | D．Talkative and strict. |
5 . “Leave no track” is popular among many campers who are concerned about our environment and favor sustainable (可持续的) travel. Its goal is simple; to minimize human-created impacts on the natural world.
Reject plastic and paper. First and foremost, one of the easiest ways to reduce the impact of camping on the planet is to go plastic and paper-free. Instead of single-use plastics and paper plates, choose bamboo or other recyclable camping dinnerware and food packages.
Rent or buy a used tent. Instead of brand-new equipment, consider renting camping equipment instead. Outdoor retail (零售) brands like REI offer a wide variety of camping products to rent, including tents.
Only camp in designated (指定的) camping areas.
| A．Pack with the planet in mind. |
| B．Sort out what you really need when camping. |
| C．They even carry other outdoor essentials for rent. |
| D．Learn how to sustainably upgrade the summer camping here. |
| E．Campers can also buy reusable paper towels in order to genuinely leave no track. |
| F．Eco-friendly campers can learn how to update their skills with these simple tips. |
| G．Although backpacking off the beaten path sounds fascinating, it may not be eco-friendly. |
6 . Capentes is a waste picker. She collects bags of separated garbage, placing food waste in one container. This material will be turned into compost (堆肥) at the local recycling facility. The rest of the waste goes into separate containers. The recyclable materials are later sold.
The Mother Earth Foundation in the Philippines is a member of the Global Alliance for Incinerator Alternatives, called GAIA. The organization wants to prevent food waste from going to landfills (垃圾填埋场). Food waste gives off methane (甲烷) gas as it breaks down. Methane is a powerful greenhouse gas. Methane traps more heat than carbon dioxide. But it does not stay in the atmosphere nearly as long—around 12 years compared with hundreds of years.
GAIA says preventing organic waste from going to landfills or being burned is a proven and cost-effective climate solution. The environmental organization supports its members, including waste pickers, around the world. GAIA is working with governments to set up systems to separate and collect organic waste and establish facilities to compost it.
At a materials recycling facility in Malabon, organic waste collected from households is turned into compost. This material then goes into a community garden to grow vegetables. Some of the food waste is broken down into biogas. This biogas is then used to cook vegetables for waste workers to eat. It is a complete cycle, said Froilan Grate, chief of GAIA Asia Pacific, based in Manila.
Grate said there are challenges in establishing these systems in new places. It costs money to set up a facility for composting. People, including local officials, have to be educated on the importance of separating waste. Containers have to be provided to households that cannot buy more than one. And sometimes separating organic waste is not thought to be important. Also, unlike recyclables and metals, there is not a large market for organic materials. Therefore, waste workers must be paid for the system to work.
But Grate believes these problems can be solved. More people are making the connection between reducing methane and fighting climate change. The world needs better systems for dealing with waste because the current methods are adding to warming. The treatment of organic matter is an important way to reduce methane gas.
1. What is GAIA currently committed to?| A．Getting rid of food waste by burying it. | B．Reducing the impact of organic waste on the climate. |
| C．Economizing on food. | D．Reducing the harm of carbon dioxide. |
| A．The method to collect waste. | B．The process to treat organic waste. |
| C．How to use a recycling facility. | D．The wide use of organic waste. |
| A．Collecting organic waste does not require significant investment. |
| B．Every household needs to constantly replace the latest trash cans. |
| C．Organic waste holds a large share in the garbage market. |
| D．Families need to develop the habit of garbage sorting. |
| A．Methane: an Important Greenhouse Gas | B．The New Systems to Reduce Greenhouse Gas |
| C．The New Uses of Organic Waste | D．Waste Pickers Help Fight Climate Change |
7 . Low-effort things you can do to live sustainably
You might think you need to change a lot of your daily habits to live sustainably but, in fact, becoming more eco-friendly is much easier than it might seem. Below are some easy steps towards becoming more sustainable.
Shop at farmer markets.
Getting your daily fruit and vegetables from a local farmer market is an easy way to reduce your carbon footprint while eating healthily. It cuts out lengthy stays of the products in refrigerated storage and up to thousands of miles of fossil-fueled transportation.
Practice meatless Mondays.
Global meat production is a big contributor to greenhouse gasses.
Dispose of unused medications properly.
Flushing (冲) unused medications down the drain (下水道) can pollute water supplies affecting everything downstream. You shouldn’t throw medications away either as they can be dangerous for others to find.
It is easy to understand that buying something used is more environmentally friendly than buying something new and clothes are no exception.
| A．Shop second-hand. |
| B．Think twice before shopping. |
| C．A meatless diet can help prevent disease. |
| D．The best option is to take them to a collection site. |
| E．It is not practical to expect everyone to go vegetarian, |
| F．Additionally, less plastic in packaging reduces plastic waste. |
| G．The fast-fashion industry consumes considerable resources each year. |
8 . Scientists have found a new way to break down a group of harmful chemicals very hard to get rid of. The discovery could help solve a dangerous and growing problem — how to clean up the pollution of “forever chemicals”.
The group of chemicals known as PFAS (全氟烷基物) are pretty amazing. They’re non-stick, waterproof, and oil proof. They don’t burn easily or dissolve (溶解) in water. So scientists got really excited when they were discovered. Businesses started putting PFAS in all sorts of products, from non-stick pans to waterproof clothes, and from fire-fighting spray to carpets that resist stains. Even things like food wrappers and floss for cleaning your teeth contain PFAS chemicals.
But after a while, scientists realized the same things that made the chemicals useful also caused a real problem — PFAS doesn’t break down in nature. It doesn’t dissolve in water or bum. Not even bacteria can break PFAS down. No wonder these chemicals are known as “forever chemicals”.
As a result, PFAS chemicals surge in the environment. The chemicals are found in air, water, and dirt around the world — and in animals and people. In the US, 97% of humans have PFAS in their blood.
Luckily, scientists in the US have now found a way to break down some PFAS chemicals. Their solution requires boiling PFAS with two other very common chemicals. These chemicals can be found in just about any laboratory.
Dr. Brittany Trang, one of the scientists involved, said she didn’t even want to test the idea at first. “I thought it was too simple,” she said. But the process worked.
The research involved 10 types of PFAS, including two of the most common kinds. That’s a big step. But there are over 12,000 different kinds of PFAS. It’s important to note that the new method can only break down PFAS chemicals that have already been collected. Figuring out how to remove PFAS chemicals from the environment and collect them remains a huge challenge.
1. What can we infer about PFAS chemicals from paragraph 2?| A．Scientists were so excited to invent them. |
| B．They were environmentally friendly at first. |
| C．They are really widely used in our daily life. |
| D．They have more advantages than disadvantages. |
| A．Increase fast. | B．Float everywhere. | C．Extend fully. | D．React quickly. |
| A．It’s already too late to get rid of them. |
| B．There’s still a long way to go about it. |
| C．The new method is too simple to work well. |
| D．It’s impossible to get them removed from the environment. |
| A．Say Goodbye to Forever Chemicals |
| B．PFAS Chemicals Are a Two-edged Sword |
| C．PFAS Chemicals Will Remain a Challenge for Long |
| D．Scientists Find a Way to Break down Forever Chemicals |
9 . 400 million tons of plastic are generated annually, most of which comes from single-use plastic While countries are making progress in reducing this waste through paper bags and straws, there are still applications where the properties of plastic are necessary.
Transparent (透明的) wood is an alternative for such applications and is highly preferred since it prevents the harm of petroleum-derived (石油衍生的) plastic products. German scientist Siegfried Fink first created transparent wood in the year 1992, and over the past three decades it has been significantly improved by other researchers as well.
In its natural form, wood is not transparent. However, researchers have found that removing lignin, a naturally occurring biopolymer that provides structural support for the plant tissue, can make it transparent. To do so, the wood is soaked in a warm solution consisting of multiple chemicals, followed by boiling it in another solution. This removes the lignin completely and turns the wood white. However, the space that was occupied by lignin needs to be filled up to maintain structural integrity. This process is done by using a resin (树脂) at a temperature of 185 Fahrenheit (85℃).
The final product can have as much as 90 transparency, and it doesn’t break easily. More importantly, it is more biodegradable than glass or plastic.
While transparent wood isn’t commercial yet, it has been employed in a wide variety of applications ranging from construction to energy storage, making flexible electronics and packaging.
The researchers at the Indian Institute of Technology ( IIT) conducted a life-cycle analysis (LCA) of transparent wood to determine the environmental impact of its production and end-of-life (EOL) cycle. The study found that using hydrogen peroxide for delignification, followed by using epoxy for infiltration, was the most eco-friendly. When scaled up for industrial production, the former method would lower electricity consumption by as much as 98. 8 percent.
EOL analysis showed that transparent wood had a reduced ecological impact compared to polyethylene (聚乙烯), paving the way for it to be commercially adapted to replace the petroleum-based material.
1. Why is transparent wood preferred compared to plastic?| A．It is easier to make. | B．It is environmentally friendly. |
| C．It can be used longer. | D．It can be used repeatedly. |
| A．The natural form of wood. | B．The importance of chemicals. |
| C．How transparent wood is made. | D．How lignin keeps wood strong. |
| A．It can be recycled. |
| B．It will replace plastic soon. |
| C．The most eco-friendly way to produce it. |
| D．Potential damage caused by it to the environment. |
| A．Promising. | B．Difficult. | C．Profitable. | D．Uncertain. |
1. What is the campaign’s main goal?
| A．To encourage people to reduce garbage. |
| B．To ask people to protect the environment. |
| C．To warn people of the bad effects of cars. |
| A．Planting trees. | B．Painting posters. | C．Collecting garbage. |
| A．Hang posters. | B．Stop driving cars. | C．Decorate classrooms. |
| A．Impractical. | B．Confusing. | C．Wonderful. |
