1 . When Crystal was riding a bike to the local Wildlife Center last December, she was scheduled to go bird-watching. Just a mile into her walk, she saw a female
Her best
Staff members at the rehab center
It’s a(n)
| A．bird-watcher | B．swan | C．passer-by | D．duck |
| A．claimed | B．guessed | C．knew | D．admitted |
| A．continue | B．move | C．leave | D．wait |
| A．medical | B．constant | C．public | D．normal |
| A．quickly | B．bravely | C．carefully | D．proudly |
| A．stopped | B．struck | C．passed | D．reminded |
| A．result | B．support | C．solution | D．wish |
| A．bike | B．seat | C．feet | D．back |
| A．doctors | B．workers | C．friends | D．strangers |
| A．access | B．call | C．lift | D．invitation |
| A．assumed | B．determined | C．denied | D．examined |
| A．Sadly | B．Gradually | C．Accidentally | D．Finally |
| A．help | B．center | C．rescue | D．way |
| A．unexpected | B．disappointing | C．good | D．natural |
| A．raise | B．save | C．respect | D．change |
2 . 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. |
3 . China is showing the world its great resolve in the global climate campaign with concrete and self-motivated efforts as well as serious commitment.
At the opening ceremony of the Paris climate summit, Chinese President Xi Jinping restated China’s plan made in June to cut its carbon emissions per unit of GDP by 60—65 per cent from 2005 levels by 2030, and increase non-fossil fuel sources in primary energy consumption to about 20 per cent.
With a large population, China is facing increasing resource limits, severe environmental pollution and a worsening ecosystem, and its citizens are also becoming increasingly aware of environmental problems. Suffering environmental problems and considering the efforts important in order to transform its economic growth pattern, the country will have much at risk if climate change is left unattended.
Actually, climate change efforts have already been included in China’s medium-and long-term program of economic and social development, and ecological efforts are the clear characteristics in China’s 13th Five-Year Plan(2016—2020).
Although it is and will be a developing country for a long time, China has been actively involved in the global campaign against climate change, now topping the world in terms of energy conservation and the use of new and renewable energy.
However, China’s development rights need to be respected. It is unfair to overstress China’s status as one of the world’s largest greenhouse gas emitters and regard it as the major part of responsibilities in the global fight against climate change.
It is worthy of notice that China’s emissions of greenhouse gases per person are far lower than those of developed countries, especially the United States, although rapid economic expansion and its population base have made it one of the biggest producers of the greenhouse gas.
To show its great resolve, China also announced the establishment of an independent South-South cooperation in September, investing RMB 20 billion to help developing countries affected by global warming.
While China is eagerly accomplishing its policy commitment, developed countries should stop questioning China’s commitment to fighting climate change and pointing fingers, and start shouldering their due responsibilities instead.
1. China is self-motivated to fight against climate change in order to .| A．top the world |
| B．transform its economic growth pattern |
| C．solve its population problem |
| D．respond to pressure from developed countries |
| A．China | B．the United States |
| C．economic expansion | D．the population base |
| A．China will completely use non-fossil fuels by 2030 |
| B．China will carry out its plan by stopping its development |
| C．Chinese emit more greenhouse gases than Americans on average |
| D．some developed countries are not taking on their responsibilities |
| A．Expanding its economy. |
| B．Using non-renewable energy. |
| C．Making the fight against climate change part of China’s 13th Five-Year Plan. |
| D．Donating money to developing countries. |
4 . A new study suggests classic paintings by well-known Impressionists Joseph Turner and Claude Monet may have been influenced by air pollution during the Industrial Revolution.
The study, published in Proceedings of the National Academy of Sciences by authors from Harvard and Sorbonne universities, analyzed 60 oil paintings by Turner from 1796 to 1850 and 38 paintings by Monet from 1864 to 1901.
Scientists don't know exactly how polluted the cities were during that time for lack of data. However, researchers say examining the works of Turner and Monet can give a picture of long-term environmental change with the air pollution.
In particular, researchers said changes in local sulfur dioxide emissions from burning coal may explain changes in the colour contrast and intensity of Turner, Monet, and others' works, even after taking into account the artistic trends and subject matter of the time.
Scientists successfully measured painters' representation of nature, focusing on differences in local weather patterns which influenced colour in works painted in different parts of Europe. Paintings' done in Britain generally feature a paler blue sky than other works in other parts of the continent. Generally, artists can historically accurately represent their environment, so Turner and Monet were chosen because they are famous for their landscape and cityscape paintings and also because they were active during the Industrial Revolution, when air pollution grew at a rate never seen before.
Additionally, researchers say that as the air in London and Paris became more polluted, the cities would appear hazier to the eyes as well as in photographs. By comparing the paintings of Turner and Monet to pictures from the era, they were able to determine the artists were at least partly influenced by the change in emissions.
1. How did the researchers conduct the study?| A．By referring to relevant historical records. |
| B．By comparing the paintings of Turner and Monet. |
| C．By relating the paintings to the air conditions then. |
| D．By analyzing the data during the Industrial Revolution. |
| A．Air pollution at that time. | B．Change in subject matter. |
| C．Social trends of the period. | D．Development of photography |
| A．European artists preferred landscape paintings. |
| B．Scientists focused on studying weather patterns. |
| C．Turner and Monet intended to present pollution. |
| D．Britain suffered from air pollution most in Europe. |
| A．To inform people of a new discovery. | B．To instruct people to appreciate paintings. |
| C．To introduce the Industrial Revolution. | D．To call on people to protect the environment. |
5 . My name is Miranda Gibson. I have been at the top of a tree for five months now. Some people might wonder
I have walked through this forest many times. On December 12, 2011,
Life in the tree top can be
Living on the tree has been inspiring. I am willing to
| A．why | B．when | C．how | D．where |
| A．water | B．animals | C．machinery | D．tourists |
| A．bear | B．help | C．keep | D．spare |
| A．sold | B．stolen | C．protected | D．lost |
| A．grew out | B．fell short | C．ran out | D．let go |
| A．refreshing | B．risky | C．challenging | D．rewarding |
| A．get up | B．get away | C．give in | D．give up |
| A．change | B．look | C．search | D．touch |
| A．confused | B．nervous | C．sorry | D．lonely |
| A．Beyond | B．Without | C．Despite | D．Unlike |
| A．height | B．experience | C．background | D．position |
| A．return | B．stop | C．stay | D．hide |
| A．but | B．though | C．because | D．so |
| A．soon | B．long | C．near | D．bad |
| A．moved | B．logged | C．burned | D．missed |
6 . On a hot summer afternoon along the Mandavi River, Shweta Hule wraps her sari around her ankles and bends to pick wild “weeds” from the river and drop them into a bowl. The plants will be made into fritters (炸果饼), to be served at the little restaurant attached to the B&B Hule manages in the Indian coastal town of Vengurla.
Wild edible (可食用的) plants are common in kitchens here. Hule’s weed is juicy, which is found in mangrove forests. Harvesting some of the plant is helping conserve the mangroves, a globally endangered ecosystem of salt-tolerant trees that stop coastal erosion (侵蚀) and absorb storm damage.
Hule is head of Swamini, a self-help group set up by nine women from a fishing community in Vengurla who started Mandavi Eco Tourism in 2017. Vengurla is known for its beautiful beaches and seafood, but the climate crisis has made fishing for a living unsustainable, so people are trying to find other sources of income. They came up with the idea of running mangrove safaris (观光游) for tourists in Vengurla’s Mandavi River.
The safaris offer visitors a unique hour-long tour of the mangroves. Food has also become a key attraction: local spicy coconut curries, with homegrown or wild vegetables. Tourists are encouraged to go crabbing, and their catch is cooked and served.
Hule only discovered recently that the weed was edible when she met tourists from another coastal city. She researched these leaves and learned that the salty plant is rich in vitamins. She made her own version of the fritters, with chickpea flour, and presented it at the wild vegetable festival. “It was an instant hit. This boosted the confidence to include these fritters in our restaurant menu,” says Hule.
Swamini’s lodging house also serves vegetarian meals and plates of fish and crab sourced from the river. “The satisfaction after the visitors enjoy our meal is the real currency. We had guests from London who were so happy with our food that they took down the recipe. Such people help our business grow. What more can we want?” says Hule.
1. Which of the following can best describe the example of Shweta Hule?| A．Do as the Romans do. |
| B．Strike while the iron is hot. |
| C．Kill two birds with one stone. |
| D．Bite off more than you can chew. |
| A．Eco-tours and accommodation. |
| B．Fishing guide service. |
| C．Vegetable growing techniques. |
| D．Hands-on cooking classes. |
| A．They were less expensive. |
| B．They were traditional. |
| C．They had their own features. |
| D．They got strongly promoted. |
| A．Lost. | B．Proud. | C．Worried. | D．Curious. |
7 . Unlike humans who enter a state of relatively complete unconsciousness while sleeping, birds can more carefully control their sleep. Birds often sleep with one eye open, only half their brain resting at the same time. The other half of the brain is awake, able to note danger if needed.
While the exact way in which birds control their sleep patterns has not been well studied, it has been shown that the safer a bird feels when sleeping, the more likely it is to sleep deeper. If the situation is more uncertain, however, the bird will sleep more lightly.
Sleeping together is another defensive method that many birds use. By living together, some species can create a nighttime place where thousands of individuals sleep. As a result, there are more birds to notice their enemies’ attack, giving each individual bird a greater chance of survival. In winter, many birds, particularly small birds, live together to share body heat and survive lower nighttime temperatures.
When birds sleep, they bury weak body parts in their feathers. A bird’s feathers create air pockets that help it keep warm, and by placing feet or the bill into the feathers, less body heat is lost. When a bird’s bill is buried deeply in its feathers, it is also able to breathe air warmed by its own body heat.
There is little data about how long birds sleep at a time, but studies show that birds may sleep longer during longer nights. This may be because birds are not able to search for food or take part in other activities without enough light and so sleeping is the next natural item on their to-do lists. Birds are able to sleep for a short time during the day, however, and can also sleep longer whenever they are in a safe place.
1. How can birds control their sleep?| A．By opening both of the eyes. | B．By ignoring danger frequently. |
| C．By entering a dream completely. | D．By keeping half of the brain awake. |
| A．Birds’ condition. | B．Birds weight. | C．Birds’ feelings. | D．Birds’ sleep patterns. |
| A．They can attack their enemies. | B．They can protect themselves well. |
| C．They can lower body temperatures. | D．They can share body heat in summer. |
| A．Into their feathers. | B．Into their feet. |
| C．Into their mouths. | D．Into their skin pockets. |
| A．Birds can search for food in weak light. |
| B．Birds should plan their activities more carefully. |
| C．Birds can usually sleep longer at night in winter. |
| D．Birds should place sleeping first on their to-do lists. |
In Sarek National Park above the Arctic Circle, I wake up with the wind
Sarek's mountains, which used to be covered by vast
In order to keep the land in its
After breakfast, I set out again
9 . I fell in love with Yosemite National Park the first time I saw it. My parents took us there for camping. On the way out, I asked them to wait while I ran up to El Capitain, a
About 15 years ago I started seeing a lot of
I tried
In 2004, together with some climbers, I set a date for a
Each year volunteers come for the cleanup from everywhere. In 2007 alone, 2,945 people picked up 42,330 pounds of trash.
I often hear people
| A．distant | B．huge | C．narrow | D．loose |
| A．immediately | B．finally | C．gradually | D．recently |
| A．imagining | B．painting | C．describing | D．climbing |
| A．garden | B．home | C．lab | D．palace |
| A．material | B．resources | C．waste | D．goods |
| A．more | B．most | C．less | D．least |
| A．throwing away | B．picking up | C．breaking down | D．digging out |
| A．kill | B．save | C．wait | D．spend |
| A．cleanup | B．party | C．picnic | D．concert |
| A．dropped out | B．showed up | C．looked around | D．called back |
| A．demand | B．receive | C．achieve | D．overcome |
| A．plan | B．visit | C．contact | D．difference |
| A．talk | B．complain | C．argue | D．quarrel |
| A．doing | B．thinking | C．questioning | D．watching |
| A．method | B．explanation | C．example | D．research |
10 . Urban Wildlife
Cities are diverse ecosystems. In addition to visitors, a large number of species share our urban areas. As our cities spread, we need to think about what it is like for other species to have human neighbors.
Cities are built for humans.
There are also structures built with the aim of bringing wildlife into the city. The Olympic Forest Park in Beijing is a good example. The park used native plants, and created open and natural spaces for wildlife. The result is a zone in Beijing with over 160 species of birds. In many ways, the park is the opposite of a zoo.
If we learn to share our space, we can become better neighbors of the wildlife around us.
| A．They are built to protect birds. |
| B．Our actions sometimes help other species. |
| C．If we do not, more species will become extinct. |
| D．They do not always provide suitable habitats for wildlife. |
| E．Instead of being kept in cages, wildlife can move more freely. |
| F．At first, people were afraid of the bats and tried to get rid of them. |
| G．They would sit on it and their droppings would fall into the water. |
