3 . Farmers in southern Italy are cultivating tropical fruits like avocados and mangos. Tropical creatures such as the rabbitfish are ____ in Mediterranean nets. And the winemakers in southern France are worried that their grapes may become extinct. Fifty years ago all this would have been _____ , but since the early 1980s rising temperatures have forced some farmers to ____ grapes for some tropical fruits.

Italy and France have long been proud of their cuisines. Both countries jealously ____ the rules that say   only ham made in Parma, a province in northern Italy can be called “Prosciutto di Parma”, and only fizzy wine made in Champagne can be called champagne.

Roquefort, that most ____ of blue cheeses, was given special protection by the parliament of Toulouse in 1550. The fact of having been grown somewhere famous has traditionally been seen as a guarantee of ____ .

But climate change could ____ that. Take polenta(意大利玉米糊), a popular Italian dish consisting almost entirely of ground corn. High temperatures and drier weather have already reduced corn yields in southern Italy.

If this pattern continues and spreads ____ , will Italian polenta-makers have to order their corn from elsewhere? And what about durum wheat, which grows ____ in Mediterranean lands and is used to make pasta, flatbreads and couscous? Modelling suggests that durum yields will sharply fall there if the temperature keeps on rising.

So should we worry about the future of spaghetti? Gabriele Cola, a researcher at Milan University, is   ___ about the short term. “I don’t see crops at serious risk, because farming is more ____ and technologically capable, so it can always respond to changes,” he says.

Increased irrigation(灌溉) can ____ the effects of drought. Scientists may also breed more resistant varieties of crops. But ____ deeper change seems likely. If temperatures continue to rise, farmers in northern   Europe may find they can grow southern staples( 主食 ); polenta may ____ northern Europe. Meanwhile, the Italian southerner may also have to ____ if tropical fruits continue to spread there.

4 . How did Cape Town, South Africa, get into a Day Zero situation—when the city’s taps would go dry because its reservoirs (水库)would become dangerously low on water? The city gets its water from six reservoirs in Western Cape province, which usually ____________ during the rainy season, from May through August. But since 2015 the region has been suffering from the worst drought (干旱)in a century, and the water in those reservoirs____________ tremendously. Compounding the problem, Cape Town’s population has grown substantially, increasing ____________ . The city actually did a pretty good job by reducing leaks in the system, a major cause of water waste, and has even won awards for its ____________ policies. But the government of South Africa was slow to declare a national disaster in the areas hit hardest by the drought, paving the way for the recent ____________.

Cape Town is not ____________ . Since 2014 southeastern Brazil has been suffering its worst water shortage in 80 years,___________ decreased rainfall,   forestation and other factors. And many cities in India do not have access to municipal water for more than a few hours a day, if at all.____________ , the city of Shimla ran out of drinking water in May, urging locals to beg tourists to stay away from the popular Himalayan summer resort.

In the U.S., the situation is somewhat better, but many urban centers still ____________ water problems. Californians recent multiyear drought led to some of the state’s driest years on record. Since about half of the state’s urban water usage is for landscaping, it was able to cut back on that fairly easily. But cities that use most of their water for more essential uses, such as drinking water, may not be so ____________ .

____________ , steps can be taken to avoid urban water crises. In general, a “portfolio approach” that relies on multiple water sources is probably most ____________ . Cape Town has already begun implementing a number of water projects, including tapping groundwater and building water-recycling plants. Many other cities will need to repair existing water infrastructure (基础建设)to cut down on leakage. City leaders should be thinking about meeting long-term needs rather than just about ____________ requirements. Good organization and financial accountability are equally critical. And planning efforts should include diverse stakeholders (利益相关者)from the community. One major challenge is providing services to informal areas, which develop without any government foresight. Such regions often ____________ basic resources一a well-planned water supply among them. The global community has an opportunity right now to take action to prevent a series of Day Zero crises. If we don’t act, many cities may soon face a time when there isn’t a drop to ____________ .

6 . For most birds, eyes are essential to life on the fly. _________ when studying how birds might adapt to our quickly changing world, ornithologists (鸟类学家) have largely overlooked eye size in favor of traits such as wing length and beak shape. Now, though, a lost “treasure trove” (宝库) of avian (鸟的) eyeball measurements offers a new view.

In 1982 University of Chicago graduate student Stanley Ritland carefully _________ the eyeballs of nearly 2,800 species. He never published his data, but Ian Ausprey, a graduate student at University of Florida, has just given it a second look. His analysis _________ previous work in Peru showing that smaller-eyed birds adapt better to changing habitats.

“We’re able to show strong correlations between eye size, the type of _________ the birds use, as well as their food-searching behavior,” Ausprey says. Ritland’s measurements indicated an inverse relation between eye and _________ size. Birds with smaller eyes tended to be _________, traveling across many habitats; larger-eyed species had _________ ranges, concentrated around the equator (赤道) and often covered by dense forest shade. The study suggests that smaller-eyed birds can _________ handle varying light levels as they travel, whereas larger-eyed birds struggle with bright light outside of their dim woodlands.

Ausprey had already seen this _________ in Peru’s mountainous cloud forests. In these biodiversity hotspots, he says, “eye size is __________ related to how birds respond to agricultural disturbance.” Larger-eyed birds tend to __________ from brightly-lit agricultural and deforested landscapes; smaller-eyed birds adapt. The new study __________ Ausprey’s Peru observations to a wider variety of birds elsewhere, including parrots and woodpeckers.

Allison Shultz, an ornithologist involved in the research, praises it for highlighting the importance of birds’ light __________. Her own work has found a link between bird coloration and environmental light, and she looks forward to future research exploring how light pollution and deforestation might further shape bird eyes. “I’d be very curious if we’re actually seeing eyes __________ to better match newer light environments,” Shultz adds.

Ausprey says the study underscores the importance of __________ habitats across the light-availability spectrum (光谱), especially areas of dense rain forests, to protect birds with eyes of all sizes from habitat loss.

7 . Everybody loves to hate invasive species. The international list of invasive species—defined as those that were introduced by humans to new places, and then _________ — runs to over 4,000. In Australia and New Zealand hot war is fought against introduced creatures like cane toads (蔗蟾蜍) and rats.

Some things that are uncontroversial (无争议的) are nonetheless foolish. With a few important exceptions, campaigns to   _________ invasive species are merely a waste of money and effort — for reasons that are partly practical and partly philosophical.

Start with the practical arguments. Most invasive species are neither terribly successful nor very _________ . Britons think themselves surrounded by foreign plants. _________ , Britain’s invasive plants are not widespread, not spreading especially quickly, and often less of a(n) _________ than vigorous native plants. The arrival of new species almost always _________ biological diversity (多样性) in a region; in many cases, a flood of newcomers drives no native species to extinction. One reason is that invaders tend to colonise _________ habitats like polluted lakes and post-industrial wasteland, where little else lives. They are nature’s opportunists.

The philosophical reason for starting war on the invaders is also _________. Elimination campaigns tend to be   _________ by the belief that it is possible to restore balance to nature — to return woods and lakes to the state before human   ____________ . That is misguided. Nature is an everlasting mess, with species constantly emerging, withdrawing and hybridizing (杂交). Humans have only quickened these processes. Going back to ancient habitats is becoming ____________ in any case, because of man-made climate change. Taking on the invaders is a(n) ____________ gesture, not a means to an achievable end.

A reasonable attitude to invaders need not imply passivity. A few foreign species are truly ____________ and should be fought: the Nile perch – a fish, has helped drive many species of fish to extinction in Lake Victoria. It makes sense to ____________ pathogens (病菌), especially those that destroy whole native tree species, and to stop known agricultural pests from gaining a foothold. Fencing off wildlife reserves to create open-air ecological museums is fine, too. And it is a good idea for European gardeners to destroy Japanese plants, just as they give no space to native harmful grasses like bindweed and ground elder. You can garden in a garden. You cannot garden ____________ . That is universally accepted.

8 . In February 1970, a group of activists gathered in Vancouver, Canada to discuss a planned nuclear test on the Alaskan island of Amchitka. They eventually agreed to sail to the test site and _________ against the explosion in person. At the end of the meeting, the chairman raised two fingers to the room and shouted “Peace!”. After a brief pause, one young attendee _________ with a monumental line: “Let’s make that a green peace”. The group were so _________ the phrase that they named their first boat the Green Peace.

Over the last 50 years, the _________ movement has become so closely associated with the colour green that it’s almost impossible to see a green poster, label or recycling bag without thinking about our planet’s future. But though that connection is the product of a very recent crisis, its _________ go back some way. We have _________ green with nature and its processes for thousands of years. Indeed, the very word “green” comes from the ancient Proto-Indo-European word ghre, meaning “grow”.

The human species, which emerged in the green forests and grasslands of Africa about 300, 000 years ago, has a special _________ link with green. Our eyes might even have _________ specifically to see the green in plants. Unlike most animals, who are red-green colour blind, we humans developed a third cone cell, an additional photoreceptor enabling our _________ to spot ripe red and yellow fruits against a backdrop of green leaf, and to distinguish different green leaves from each other. In daylight conditions, human eyes are more ____________ to green than any other colour.

With the rise of farming, we started to use green as a(n) ____________ for nature and its processes. Archaeologists have recently found an extraordinary store of green jewels in the Levant, ____________ some 10, 000 years. The researchers believe that these objects, many of which had come from hundreds of miles away at great cost, were chosen because they ____________ young leaves and might have been used by early farmers to pray for rainfall or fertilise crops.

The ancient Egyptians, who were farming the banks of the Nile from about 8000 B.C., ____________ use green as identification for their crops. Egyptian painters often represented their god of ____________, Osiris — who was responsible for flooding the Nile’s banks, filling the soil with nutrients and pushing the first green shoots up through the fields — as a bright green being.

9 . With vigorous promotion and extensive participation over the past two years, waste sorting is a new trend that has reshaped the image of campuses across Beijing.

“In the past, sanitation workers sorted the garbage next to the trash cans near the dormitory, _________ a disgusting odor. On windy days, the trash was blown everywhere and we always _________ around it with our hands covering our noses,” says Sun Jiajing, a sophomore at Beijing Forestry University. “Now, we are more active in classifying waste.”

Since a revised guideline on household waste disposal in Beijing was _________ on May 1, 2020, many students have seen their campuses take on a new look that is more pleasant, tidy and appealing.

At Beijing Forestry University, about one in four students are trash-sorting volunteers.

In the Beijing No 20 High School, bins to recycle waste are placed on each floor and students on duty will set their wits to turning trash into _________.

“I received training on trash classification before taking on the role as head of the trash-sorting station. My job is to remind everyone to classify waste and recycle to the best _________,” says Ding Shuyi, a student at the school.

As China pushes _________ the “double reduction” education policy, which aims to ease the burden of _________ homework and off-campus tutoring for primary and middle school students, understanding of waste sorting has been fused into academic teaching via various innovative approaches.

“Our Chinese teachers encourage students to write poetries _________ on waste classification, math teachers lead them to do math on topics such as water conservation, while our music teachers choreographed a ‘waste sorting’ dance with the students,” says Zuo Chunyun, principal of a primary school in the suburban Tongzhou district of the capital.

Zuo adds that students in senior classes will join trash-sorting projects and map out _________ in the form of handwritten newspapers and mind maps. Decorations made from recycled materials are exhibited in the school’s corridors.

The same scene can be seen in Qianjin Primary School, Haidian district. “Garbage can be turned into __________,” says Wang Liping, the principal. “We have raised 100,000 yuan ($15,760) of charity funds by encouraging students and their parents to recycle waste, and the money was used to purchase movie screens for schools in Hotan, Xinjiang.”

According to Liu Jianguo, a professor at Tsinghua University, the implementation of garbage sorting depends on the __________ participation and unremitting efforts of society, which is conducive to the__________ of social civilization.

“Wide participation of students and school staff will help promote garbage sorting to become a new fashion in society,” adds Liu.

Official data shows that over 90 percent of the residents in Beijing have participated in waste classification, and about 85 percent can __________ categorize the garbage. But still, relevant departments are __________ to further raise the ratio.

“Our next move will be more precise supervision of groups that did __________ poorer jobs in sorting out garbage,” says a staffer with the Beijing Municipal Commission of Urban Management.