1 . A huge section of the Milne Ice Shelf, located on Ellesmere Island in the northern Canada, collapsed into the Arctic Ocean, according to the Canadian Ice Service. This created an “ice island” which is about 30 square miles in size. As a comparison, Manhattan Island is about 23 square miles.

“Entire cities are that size. These are big pieces of ice,” Luke Copland, a glaciologist at the University of Ottawa who was part of the research team studying the ice shelf, told Reuters. “This was the largest remaining intact (完整的) ice shelf, and it’s collapsed, basically. ”

The Canadian Ice Service said on Twitter that “above-normal air temperatures, offshore winds and open water in front of the ice shelf are all part of the recipe for the ice shelf to break up.” A huge section of the Milne Ice Shelf has collapsed into the Arctic Ocean, producing a 30-square-mile ice island.

The ice shelf has now been reduced in area by about 43%. An ice shelf is a thick slab of ice, attached to a coastline and extending out over the ocean, according to the National Snow and Ice Data Center. “Some shelves have existed for thousands of years,” the center said.

So what’s going on up there? Though the planet is warming worldwide due to climate change, the Arctic has been warming at a rate twice that of the rest of the world. This summer has been particularly warm: Arctic sea ice melted to its lowest July level on record and in June, a town in Siberia soared (急升) to 100.4 degrees Fahrenheit, believed to be a record high for the Arctic.

“When I first visited those ice caps, they seemed like such a permanent fixture of the landscape,” Mark Serreze, director of the NSIDC and geographer at the University of Colorado, Boulder, said in a statement. “To watch them die in less than 40 years just blows me away.”

1. Why does the author mention Manhattan Island in Paragraph 1?

A．To stress that Manhattan Island is vital for Canada.

B．To introduce where Manhattan Island locates.

C．To say the great collapse is terrible.

D．To compare two different places.

2. What’s one reason that made the ice shelf collapse?

A．Its location.

B．Its huge body.

C．Special intact form.

D．Higher air temperatures.

3. What do we know from Paragraph 5?

A．Arctic sea ice melted to its lowest in June.

B．Climate change brings about great changes.

C．The earth is warming because of the loss of ice shelf.

D．The Arctic warms more slowly than the rest of the world.

4. What is Mark Serreze’s attitude to the collapse?

A．Shocked.	B．Humorous.
C．Scientific.	D．Neutral.

2 . Malin Pinsky had the first of two lightbulb moments in 2003 while crossing Drake Passage. He was then standing on the bridge of a research ship and was scanning the sky for seabirds, which was one of his duties as a research technician on the cruise (海上航游). Just five months earlier he had finished college, where he studied biology and environmental science.

As the ship entered nutrient-rich Antarctic waters, whales suddenly showed up all around the ship. That moment on the bridge helped him realize that the ocean looks featureless from the top, but there’s so much going on underneath.

The second lightbulb moment hit him several months later. Pinsky was then an intern (实习生) in Washington, D.C. His job was making photocopies. It was around the time when two big reports had come out. Both focused on what policies might best preserve U.S. ocean resources. “I realized we have all these laws and policies that determine how we as a society interact with the ocean. But they’re far out of date. We don’t yet have the science to know what the new policy should be,” Pinsky said.

Today he runs a lab with about 20 workers. His team wants to seek how our changing climate, as well as overfishing and habitat destruction, might be driving changes in fish and other animals in the sea. To find out, team members travel each year to coral reefs near the Philippines. There, they carefully catalog populations of different fish. They collect data on the growth and mating of these fish, their diversity and other factors.

“Pinsky’s broad approach to the problem — looking at species, where they live and how fisheries are managed — is setting the pace for other scientists,” says Kimberly Oremus, a fishery economist at the University of Delaware in Newark. “Pinsky is pushing the whole field to respond to his growing body of research.”

1. What made Pinsky have the first lightbulb moment?

A．The vastness of the ocean.

B．The sight of seabirds in the sky.

C．The view of Drake Passage.

D．The appearance of whales around the ship.

2. What did Pinsky realize when he was an intern in Washington, D.C.?

A．He needed to take more photos of oceans.

B．He should do something to update ocean policies.

C．The U.S. ocean resources need to be better preserved.

D．There have already been perfect policies to preserve the ocean.

3. What does Pinsky’s team focus on?

A．The harm of overfishing.

B．Features of different fish.

C．Factors affecting ocean ecosystems.

D．The reasons for global warming.

4. What’s Kimberly Oremus’ attitude towards Pinsky’s research?

A．Positive.

B．Doubtful.

C．Disapproving.

D．Uninterested.

3 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Puppies that mainly eat dog food are more likely to have problems with their gut (下消化道) health in later life compared with those     1     (give) a diet of leftovers or raw meat.

Anna Hielm-Björkman at     2     University of Helsinki, Finland, and her colleagues surveyed more than 7000 dog owners in Finland about     3     they fed their pets between 2009 and 2019.

The researchers surveyed each dog owner multiple times in this period and also asked them whether their dog     4     (experience) any gastrointestinal problems that lasted three weeks or more-also known as chronic enteropathy (CE).

The team wanted to determine the effect that a dog’s diet at an early age had     5     its gut health in adulthood. According to Hielm-Björkman, dog diets in Finland can largely be split into three categories: dog food, their     6     (owner) cooked leftovers and non-processed food such as raw meat, fish and berries.

The researchers found that 22 per cent of dogs developed CE in adulthood,     7     (typical) at age one and a half.

Their diet as a puppy, aged between 2 months and 6 months,     8     (find) to correlate strongly with whether it developed CE in later life or not. Those that were mostly fed dog food were 29 per cent more likely to develop the condition compared with dogs mostly     9     (eat) raw foods. However, this type of study can’t establish whether the dogs’ diets were responsible for the     10     (high) rates of illness.

4 . A new form of real estate(不动产)is appearing along the beaches of South Africa and on the dry islands off its coast-tiny white beach huts. With good ventilation and a sea view, they are just big enough to fit a family of African penguins. Their unique selling point: a safe and cool place for penguins to breed.

African penguins, unlike their relatives that live in snow and ice, live well in the cold currents of the South Atlantic Ocean. But when they come to land, their thick black coat absorbs the heat, and they desperately look for cover-both for themselves and their fragile eggs.

Historically, the penguins dug burrows in layers of guano-accumulated seabird and bat feces- that lined Africa’s penguin colonies, but in the 19th century, traders started selling guano(鸟粪)as fertilizer, leaving the penguins and their eggs increasingly exposed to predators and the baking sun. This, combined with other threats such as egg poaching, overfishing and climate change, has caused African penguin populations to plummet. In 2019, they were thought to be less than 20,000 breeding pairs, down from an estimated 1.5 to 3 million birds in 1900.For more than a decade, the species has been listed as endangered by the IUCN.

To date, the African Penguin Nest Project has installed more than 1,500 nests across five of South Africa’s penguin colonies, and plans to expand into Namibia next year, the only other country with breeding populations of the species.

“This is still just a drop in the bucket,” says Graham, who anticipates they will need to deploy at least 4,500 more ceramic homes to protect penguins currently nesting in exposed areas. “The goal is that every penguin that needs a nest will get one.”

1. What is the reason for building the beach huts?

A．To beautify the beach.	B．To conduct research.
C．To house the penguins.	D．To balance the ecology.

2. How many factors have affected the penguin populations according to the text?

A．Four.

B．Five.

C．Six.

D．Seven.

3. Which of the following can replace the underlined word “plummet” in Paragraph 4?

A．Innovate.

B．Increase.

C．Swing.

D．Decline.

4. Which column may the text appear in a newspaper?

A．Culture.

B．Environment.

C．Technology.

D．Art.

5 . A solar tree is a structure like a tree that generates solar energy using photovoltaic panels (太阳能光伏板). It helps solve an urgent global challenge: Replacing greenhouse gas-emitting energy sources like oil and gas with renewable energy. But the power generation potential of solar trees is relatively limited, and their primary purpose is to raise public awareness about renewable energy by getting people to notice and interact with solar energy in new ways.

Solar trees generally have a firm metal, plastic, or stone base that extends up and out into “branches” on which solar panels are mounted. Beyond this basic structure, there is great diversity in the design of solar tree units. The solar tree’s photovoltaic “leaves” absorb sunlight, converting it into electricity that is conducted down through the trunk-like central pillar of the structure to an inside battery. Many designs feature rotating (旋转的) panels that can move throughout the day in order to obtain the greatest amount of sunlight.

Solar trees help power homes, businesses, and public services. They can create shade to help reduce the urban heat island effect and provide shelter in severe weather such as rainstorms and heatwaves, creating greater urban adapting ability in the face of climate change. They also enhance public spaces, providing charging stations, and powering streetlights.

In comparison to other kinds of ground-mounted solar panel devices, solar trees don’t require much land. They make solar energy generation possible in areas with little land that can’t support vast solar arrays, as well as places that lack sufficient rooftop space for panels. However, solar panels are much cheaper than solar trees at present and have far greater energy generation capacity. Therefore, present solar tree designs often serve as a extra source rather than as a primary energy source.

At present, solar trees aren’t designed as large-scale solar projects, which limits their ability to contribute to the low-carbon energy transition. Still, their varied designs are appealing. This makes solar trees effective at displaying and thereby educating people about solar energy, and promoting a business or organization’s commitment to renewable energy.

1. What is the main purpose of building solar trees?

A．To beautify the urban environment.	B．To draw public attention to solar energy.
C．To replace non-renewable energy resources.	D．To provide charging services in emergencies.

2. What do we know about a solar tree?

A．It stores energy in its own battery.

B．It can adjust its height automatically.

C．It is made of environmentally friendly materials.

D．It transforms sunlight into electricity by its metal base.

3. What does the third paragraph mainly talk about?

A．The design features of solar trees.	B．The ways of saving energy in cities.
C．The benefits of solar trees to humans.	D．The difficulties of promoting solar trees.

4. What is the advantage of solar trees over other ground-mounted solar panel devices?

A．They occupy much less land.	B．They are cheaper to manufacture.
C．They are more effective in generating energy.	D．They can work in various weather conditions.

6 . 阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。

What you need to know about the sandstorm in Beijing

A: sandstorm swept across Beijing and several northern areas in China on Monday.Where did the sandstorm come from? How long will it last? Lets take     1     look.

Q: Where did the sandstorm come from?

A: The sandstorm originated in the Gobi Desert areas of Mongolia. Strong winds picked up the sand and dust,     2     were then transported southward and eastward at high altitudes and eventually settled in downstream (顺流的) are as such as Beijing,    3     (result) in the sandstorm.

Q: When will the dusty weather     4     (weak)? Should we expect more sandstorms this week?

A: According to the National Meteorological Center, the sandstorm     5     (moderate) starting from next Tuesday.

Q: Why are sandstorms in North China so frequent this year?

A: There are multiple     6     (reason).The cold air activity has remained active in March     7     April. Mongolian cyclones (旋风) and cold fronts (冷锋) have transported sand and dust from the sand source areas downstream to even more southern and farther areas.

Q: Is a yellowish sky always an indicator of a sandstorm?

A: Not exactly. Only when the sandy and dusty weather reaches a certain     8     (intense) can it be called a sandstorm.

Q: What precautions to take in dusty weather?

A: Stay indoors as much as possible, and keep windows and doors closed. Use air purifiers, sprinkle water, use humidifiers, and mop the floor with a wet cloth     9     (remove) dust.Wear masks when going outdoors, and clean your face and nose when returning home; When driving, reduce speed, turn on headlights, and drive     10     caution.

7 . 听下面一段较长对话，回答以下小题。
1. What is the aim of the campaign?

A．To remind people of Earth Day.

B．To encourage people to reduce garbage.

C．To warn people of the bad effects of pollution.

2. What will be the task on the second day?

A．Planting trees.

B．Designing posters.

C．Collecting garbage.

3. What does the man expect the teachers to do?

A．Paint paper.

B．Stop driving cars.

C．Decorate classrooms.

4. How does Sara find the man’s ideas?

A．Terrible.

B．Confusing.

C．Wonderful.

8 . Saving the environment might seem like a tall order, but living an environmentally friendly life is actually quite easy.     1     Read on for some practical tips on how a single individual can help save the environment.

Recycle

Recycling is a simplest lifestyle to lower the amount of environmental waste. Every resident can get involved by taking advantage of nearby recycling services.     2     For instance, some places may not accept glass, while others might require you to separate the different materials. If you dispose of something improperly, the whole load will likely be rejected and end up in a landfill.

Buy locally-sourced foods

Eating fresh, local food consumes less fuel and packaging materials. Shipping products by truck, rail, flight, or boat creates pollution and goes against an environmentally friendly lifestyle. Instead, shop at local farmers’ markets and grocery stores stocking locally-sourced products.     3     .

Cut back on driving

Applying alternate forms of transportation consumes less gasoline.     4     If that isn’t an option, consider organizing carpools or using public transportation. By doing this, you help reduce traffic jams and the overall amount of gasoline consumption. Also, combine multiple trips into one to help minimize the distance traveled and fuel consumed.

    5    

Advocacy allows more people to create a positive impact. Spread the word about environmental conservation by sharing some of the lifestyle changes you’ve made on social media and in conversations with people around, calling on everybody to play a role.

A．Cut back your carbon footprint

B．Walk or ride a bike whenever possible

C．Encourage others to help save the environment

D．Check the regulations to ensure you use them properly

E．The topic of preserving natural resources entertains everyone

F．With just a few small lifestyle changes, you can make a difference

G．Alternatively, use community-supported services to get fresh produce regularly

9 . 听下面一段较长对话，回答以下小题。
1. Who kept the man informed of most related information?

A．The staff.

B．The students.

C．The cleaners.

2. What waste was most commonly seen in the university?

A．The paper copying.

B．The paper cups.

C．The plastic cups.

3. What proportion of interviewees were worried about waste?

A．55%.

B．45%.

C．30%.

4. What does the woman suggest to raise people’s awareness?

A．Putting up a poster.

B．Holding an exhibition.

C．Delivering a lecture.

10 . Mass public participation in afforestation efforts takes root. Zheng Jinran and Yuan Hui report from Chifeng, Inner Mongolia autonomous region.

In the Tengger Desert last month, yellow sand danced on the breeze and a profusion of sweetvetch（甜豆）swung its green leaves.

"In summer, you can see an amazing flower ocean when the plants bloom with their small pink, yellow or purplish petals," said Liang Cunxin, from Alshaa Left Banner, Inner Mongolia autonomous region.

"The enduring vitality of such plants on the barren land is astonishing," said the 53-year-old, whose family lived in the area for decades but was forced to relocate in 2007 as a result of desert encroachment.

"The government encouraged us to plant saxaul and little-leaf pea shrubs, which are commonly used to fix dunes in deserts, but the survival rate was unsatisfactory so we switched to this plant, and it has worked," he said.

The Tengger covers about 43,000 square kilometers in Inner Mongolia and Gansu province, making it China's fourth-largest arid area.

More than 2 million sweetvetch shrubs have been planted since 2017, and the hardy perennial has gradually covered more than 33 sq km of desert, Liang added.

Like Liang's family and their peers, about 400 million people from 30 provinces and regions have been affected by desertification, which by 2019 had covered a combined area of 1.68 million sq km, or 17.58 percent of China's total land area, according to data from the National Forestry and Grassland Administration.

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