1 . After years of heated debate, gray wolves were reintroduced to Yellowstone National Park. Fourteen wolves were caught in Canada and transported to the park. By last year, the Yellowstone wolf population had grown to more than 170 wolves.
Gray wolves once were seen here and there in the Yellowstone area and much of the continental United States, but they were gradually displaced by human development. By the 1920s, wolves had practically disappeared from the Yellowstone area. They went farther north into the deep forests of Canada, where there were fewer humans around.
The disappearance of the wolves had many unexpected results. Deer and elk populations — major food sources (来源) for the wolf — grew rapidly. These animals consumed large amounts of vegetation (植被), which reduced plant diversity in the park. In the absence of wolves, coyote populations also grew quickly. The coyotes killed a large percentage of the park’s red foxes, and completely drove away the park’s beavers.
As early as 1966, biologists asked the government to consider reintroducing wolves to Yellowstone Park. They hoped that wolves would be able to control the elk and coyote problems. Many farmers opposed the plan because they feared that wolves would kill their farm animals or pets.
The government spent nearly 30 years coming up with a plan to reintroduce the wolvers. The U.S. Fish and Wildlife Service carefully monitors and manages the wolf packs in Yellowstone. Today, the debate continues over how well the gray wolf is fitting in at Yellowstone. Elk, deer, and coyote populations are down, while beavers and red foxes have made a comeback. The Yellowstone wolf project has been a valuable experiment to help biologists decide whether to reintroduce wolves to other parts of the country as well.
1. What is the text mainly about?| A．Wildlife research in the United States. |
| B．Plant diversity in the Yellowstone area. |
| C．The conflict between farmers and gray wolves. |
| D．The reintroduction of wolves to Yellowstone Park. |
| A．Damage to local ecology. |
| B．Preservation of vegetation. |
| C．A decline in the park’s income. |
| D．An increase in the variety of animals. |
| A．Doubtful. | B．Uncaring. | C．Positive. | D．Disapproving. |
2 . Tips for Green Travel with Kids
Travelling doesn’t mean letting go of all the eco-friendly choices we work so hard to achieve in our daily life. Here are a few tips for green travel with kids.
Booking nonstop flights whenever possible will reduce carbon emissions (碳排放). If the closest local airport doesn’t have nonstop flights to a certain place, check with other local airports to see if nonstop flights are available.
It’s easy when travelling to pull in to fast food restaurants for snacks.
| A．Walking is good for your health. |
| B．Try to cut back to save water and energy. |
| C．But you can pack healthy food from home. |
| D．Travelling is a great chance to introduce your kids to the world. |
| E．Reusable water bottles are easy to bring along wherever you travel. |
| F．Save energy by turning off the hotel room lights when you head out for the day. |
| G．You might have to drive a bit farther, but saving on carbon emissions makes it worthwhile. |
3 . Plastic straws (吸管) have been a major problem in global discussions of environmental damage. Maybe because of their small size, the production cost of straws is low. In many countries, straws are offered freely after buying soft drinks. Therefore, plastic straws are one of the most used plastics and pollutants in the world.
The plastic straw is light and small. Due to their small size, plastic straws are often eaten by sea animals. Environmentalists have shown that the death of many sea animals is caused by eating plastic straws. The other damaging characteristic of plastic straws is that they are made of materials which cannot degrade. That means the materials cannot be changed into small harmless (无害的) ones.
The most effective way of dealing with the environmental pollution caused by plastic straws is the reuse or banning (禁止) the use of plastic straws. Being plastics, the straws can be made new items. Many organizations around the world change used straws into new products. In Africa, local communities collect used plastic straws and use them to make mats and bags. Another way of dealing with environmental pollution caused by plastic straws is placing a ban on their production and use. Experts advise governments to ban using plastic straws to save the environment. A few countries in the world such as Rwanda, Macedonia, China, Kenya have already banned the use of plastic bags and are expected to include plastic straws and bottles. But it will be a long way to do this effectively.
There are few environmentally friendly and biodegradable productions to take the place of plastic straws. These productions include paper straws, bamboo straws. However, such straws are usually expensive as their production cost is high. It’s still a question whether they can entirely take the place of plastic straws.
1. Why can people be free to use plastic straws?| A．They are very cheap. | B．They are light and small. |
| C．They are dangerous. | D．They are easy to use. |
| A．Cut up. | B．Because of. | C．Go on. | D．Break out. |
| A．It’s not difficult to ban using plastic straws. |
| B．Many countries have stopped using plastic straws. |
| C．Experts advise people to stop producing plastic straws. |
| D．Some Africans change plastic straws into new products. |
| A．It is a must to use them. |
| B．It’s not easy to reuse them. |
| C．There are still some problems to be solved. |
| D．There are some other kinds of cheaper straws. |
1. Which pet may an outgoing person prefer?
| A．A bird. | B．A dog. | C．A cat. |
| A．Clever. | B．Sociable. | C．Careful. |
| A．Pet people’s personalities. | B．More outgoing dog people. | C．Less sociable cat people. |
5 . At Sho Farm in northern Vermont, farmers Melissa Hoffman and Shawn Smith work hand in hand with the land and its inhabitants, and among them are hundreds of ducks. The ducks at Sho Farm are not being raised to be killed for food. Rather, they are naturally involved in farming operations, helping to manage pests and add fertilizer (肥料) to the soil.
In the beginning, Hoffman, who has a background in organic farming and ecology action, worked with ecologists and biologists to survey the plants and wildlife all around the area. This was “to understand who was living here, so that everything we did was in relationship to the life already here,” he says.
So, at Sho Farm, focus is placed on living harmoniously alongside other life and working with traditional ecological knowledge. Food is seen not as a commodity (商品) but as a relationship with land and life.
The methods of food production at Sho Farm, as well as the farmers’ philosophy of working with rather than against nature, are in sharp contrast to most modern agricultural systems. And that’s the point. “We’ve been talking a lot about the broken food system and the consequences of it to the environment, to wildlife, to the animals in animal agriculture and to human health,” says Hoffman, adding that it’s not just the food system that’s broken. “It’s the relationship between humans, non-human animals, land and nature.”
The ducks play a vital, integrated role on the farm, explains Hoffman, by naturally providing pest control, fertilizer and (fuel-free) land maintenance (维护), just as by-products of their existence. “We noticed where we summered groups of ducks and parts of the food system that were not doing very well. The following year, the food system was efficiently improved,” he says.
It’s a symbiotic relationship that works well. “Animals don’t have to be part of a farm in a commodity sense. They can be part of the farm as a partner,” Hoffman says. “They are wonderful partners.”
1. Why did Hoffman do a survey in the beginning?| A．To get familiar with the surroundings. |
| B．To have a good relationship with other people. |
| C．To live in harmony with other life on the farm. |
| D．To have a good understanding of organic farming. |
| A．The causes of the broken food system. |
| B．The reasons for Hoffman’s farming methods. |
| C．The changes in modern agricultural systems. |
| D．The process of food production at Sho Farm. |
| A．Animals are treated well at Sho Farm. |
| B．Animals are not to be sold for money. |
| C．People and animals play the same role in organic farming. |
| D．People and animals work together and benefit each other. |
| A．Efficient. | B．Modern. | C．Natural. | D．Economical. |
Earth Day is an event
In1962, Rachel Carson’s bestselling book “Silent Spring” created an
In the fall of 1969, Nelson announced it and appealed to the entire country to get involved. Consequently, telegrams, letters and telephone calls
Today, Earth Day is celebrated around the world every April 22. Sometimes numerous communities celebrate Earth Week, an entire week of
I sat at the breakfast table with my four-year-old son, Andy, trying to ignore the ache in my stomach. “Mama, want to play?” “Not today, baby.” I shook my head. These days I could barely get out of bed. I was still recovering from an operation. I hoped for strength and happiness. But the future seemed so hopeless.
Suddenly Andy jumped up from his spot on the kitchen floor. “Bird!” he shouted, rushing to our courtyard. Sure enough, there was a white dove seated in a tree. It sat there for a few moments, and then flew away. Strange, I’d never seen one in our neighborhood before.
When I dragged myself to the kitchen the next morning, the dove was back. This time it was with a mate carrying sticks, “Look, Andy,” I said, pointing to the tree. “They are going to make a nest.” The doves flew in and out of the courtyard all week, building on top of the tree.
Andy could hardly contain his excitement. Every morning, he’d run into the kitchen and take his spot by the door, talking to the birds while they worked. His happiness was influential. Much as I was sad, I couldn’t help but look forward to the doves’ visit too.
Then it all went wrong. The courtyard was a safe enough spot for a nest, but the tree is broad, thin leaves were far from stable. One night, a strong wind blew, throwing the doves’ nest to the ground. I heard the twigs(细枝) break apart.
I examined the damage. Nothing good ever lasted. I wouldn’t blame the doves if it never came back. But they returned. They started again from the beginning. Again, though, the wind destroyed all their hard work. The next day, and the next, they started again, as if nothing had happened.
注意：1.续写词数应为150左右；
2.请按如下格式在答题卡的相应位置作答。
I knew I had to do something.
_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________“It works! The birds are back!” Andy announced.
_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________8 . Music is known to have a great deal of mental and physical benefits on humans. From helping to treat physical medical problems to relieving stress, music can be extremely beneficial in helping to improve health.
Animals may have a great deal of stress.
Music can be extremely beneficial for animals in high stress situations.
| A．It can create a space for them. |
| B．The same goes for our furry friends, too. |
| C．They could be stressed for a variety of reasons. |
| D．It would be a beneficial practice for all parties. |
| E．Another place where music can be helpful is in car rides. |
| F．There are ways that you can identify stress in your animals. |
| G．It’s no wonder loud noises can cause dogs and cats so much stress. |
9 . Many children want to have their own pets, but how to be a good pet owner? Besides giving them food and water, what else can we do to give our pets much love?
Provide your pet with the correct diet.
If you prefer to change the previous diet of your pet, do it slowly so that they adjust (适应) properly.
Clean their housing often.
Clean your pet’s home at least once a week and any other times if necessary. Generally, a pet’s home should be clean so it is a good environment for the animal.
Keep your pet clean.
If you have a dog that always plays in the mud, it’s necessary to give it a shower every day!
Train your pet.
Put a collar on your pet with your personal information and the pet’s name. Remember to close the cage door so there is no chance of escaping and being in an unsafe place.
| A．Never hurt or harm your pet. |
| B．Be an owner with a sense of duty. |
| C．No one wants a cat that jumps on the table. |
| D．Animals require different diets based on age. |
| E．Remember that you should check the water first with your hand. |
| F．Water should be fresh, clean and changed daily to keep your pet healthy. |
| G．Without good living conditions, an animal will get sick more, and feel unhappy. |
10 . The Amazon rainforest is as undisturbed a place as most people can imagine, but even there, the effects of a changing climate are playing out. Now, research suggests that many of the region’s most sensitive bird species are starting to evolve in response to warming.
Birds are often considered sentinel (哨兵) species — meaning that they indicate the overall health of an ecosystem — so scientists are particularly interested in how they’re responding to climate change. In general, the news has not been good. For instance, a 2019 report by the National Audubon Society found that more than two-thirds of North America’s bird species will be in danger of extinction by 2100 if warming trends continue on their current course.
For the new study, researchers collected the biggest database so far on the Amazon’s resident birds, representing 77 non-migratory species and lasting the 40 years from 1979 to 2019. During the study period, the average temperature in the region rose, while the amount of rainfall declined, making for a hotter, dryer climate overall. According to the report on November 12 in the journal Science Advances, 36 species have lost substantial weight, as much as 2 percent of their body weight per decade since 1980. Meanwhile, all the species showed some decrease in average body mass, while a third grew longer wings.
Because of the study’s long time series and large sample sizes, the authors were able to show the morphological (形态学的) effects of climate change on resident birds. However, the researchers themselves are unsure and wonder what advantage the wing length changes give the birds, but suppose smaller birds may have an easier time keeping cool. In general, smaller animals have a larger rate of surface area to body size, so they dissipate more heat faster than a bigger animal. Less available food, such as fruit or insects, in dryer weather might lead to smaller body size.
1. Why are scientists fond of doing research on birds?| A．They have small body sizes. | B．They are sensitive to hot weather. |
| C．They are ecological balance indicators. | D．They live in an undisturbed rainforest. |
| A．Two-thirds of species showed a considerable decrease in weight. |
| B．About 26 species responded to climate change with longer wings. |
| C．36 species lost 2% of their body weight every year from 1979 to 2019. |
| D．A third of species have been extinct for a decade due to the hotter climate. |
| A．Put off. | B．Give off. | C．Put away. | D．Give away. |
| A．Why it is easier for smaller animals to keep cool. |
| B．Why the Amazonian birds have lost substantial weight. |
| C．Whether bird species in Amazon will be extinct in 2100. |
| D．What effects the wing length changes have on birds. |
