1 . Directions: After reading the passages below fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.

Forests give us shade, quiet and one of the harder challenges in the fight against climate change. Even as we humans count on forests to soak up a good share of the carbon dioxide we produce, we    1     (threaten) their ability to do so. The climate change we are hastening could one day leave us with forests that emit more carbon than    2    absorb.

Thankfully, there is a way out of this trap—but it involves striking a subtle balance. Helping forests flourish as valuable “carbon sinks” long into the future    3       require reducing their capacity to absorb carbon now. California is leading the way, as it does on so many climate efforts, in figuring out the details.

The state's proposed Forest Carbon Plan aims to double efforts    4    (thin) out young trees and clear brush in parts of the forest. This temporarily lowers carbon-carrying capacity. But the remaining trees draw a greater share of the available moisture, so they grow and thrive,     5    (restore) the forest's capacity to pull carbon from the air. Healthy trees are also better able to fend off (抵挡) insects. The landscape is considered less easily burnable. Even in the event of a fire, fewer trees    6     (consume).

The need    7    such planning is increasingly urgent. Already, since 20l0, drought and insects have killed over 100 million trees in California, most of them in 2016 alone，and wildfires have burned hundreds of thousands of acres.

California plans to treat 35,000 acres of forest a year by 2020, and 60,000 by 2030—financed from the proceeds of the state's emissions-permit auctions. That's only    8     small share of the total acreage that could benefit, about half a million acres in all, so it will be vital to prioritize areas at greatest risk of fire or drought.

State governments are well accustomed to managing forests,     9     traditionally they've focused on wildlife, watersheds and opportunities for recreation. Only recently have they come to see the vital part forests will have to play in storing carbon. Califomia's plan,     10     is expected to be finalized by the governor next year, should serve as a model.

2 . Directions: Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need.

A. categorise B. creation C. good D. innovative E. maximum F. packed G. pedestrianise H. processing I. shape J. short-lived K. transformation

All Change in Curitiba!

Like many other major world cities, Curitiba in southern Brazil has had to deal with issues such as pollution, poverty, and limited public funding. However, the architect and three-times mayor of the city, Jaime Lerner, has introduced some     1     solutions.

As part of his ‘Master Plan’, Lerner hoped to make the city more environmentally friendly. He initiated a recycling scheme. In return for delivering recyclable rubbish to specified     2     points, residents receive a bag of vegetables or bus tickets. As a result, Curitiba now has one of the highest recycling rates in the world. Lerner also ordered the     3     of 26 urban parks. As well as preventing pollution, these control flooding.

Lerner did not win over all the city’s residents immediately, however. When his plans to     4     part of the centre were passed, local businesses were up in arms, fearing a reduction in profits. Realising he needed to act quickly, Lerner had the     5     of six blocks completed within three days. When a group of motorists attempted to drive through the new pedestrian area, Lerner arranged for local primary schools to hold a painting workshop on the streets. The drivers were forced to turn back. Luckily for Lerner, this rebellion was     6    . The increase in profit rapidly persuaded shop owners to change their minds.

Lerner’s determination helped     7     the Curitiba of today. The average income per capita has risen from a level that was below the Brazilian average in the 1970s to 66% above the average, and surveys indicate high levels of resident satisfaction.

So, is it all just one big success story? In some respects, Curitiba may have been too successful for its own    8    . People and businesses have come to the city, which now has more than 1.8 million residents. This has put the city under enormous stress. Forty years ago, buses transported 54,000 passengers a day. Now the number is 2.3 million. According to some experts, the transport system has reached its     9     efficiency capacity. Following a rise in complaints about the noisy and     10     buses, the service is in decline.

5 . Directions: After reading the passage below, fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.

Scientists have discovered that dogs produce more facial movements when a human is paying attention to them than when they are being ignored or presented with a tasty small piece of food.

The research argues     1     the belief that animal facial expressions are largely unconscious movements, that reflect internal sentiments, rather than a way to communicate.

Their expressions are responsive to humans — not just to other dogs. That shows us how domestication     2    (shape) them.

“Facial expression is often seen as something that is very emotionally driven and is very fixed, and so it isn’t something that animals can change     3    (depend) on their circumstances,” said Bridget Waller, professor of evolutionary psychology at the University of Portsmouth, and an author of the study.

Researchers     4    (involve) in the study published in Scientific Reports, used a video camera to record the facial movements of 24 dogs over a series of experiments     5     a human either faced the animal, or faced away, and presented the dog with a tidbit (小片食物), or did not. The recordings were then examined by the team frame by frame     6    (determine) changes in the facial muscles of the canines.

The results reveal that the dogs produced far more facial expressions when the human was facing the dog, than when they turned away — in particular, the animals were     7    (likely) to show their tongues and raise their inner eyebrows.

But the presence of food had no impact on the animals’ expressions. That suggested canine facial expressions were not just down to excitement, and cast doubt over     8     dogs use their facial expressions to twist their owners around their paws, said Waller.

“We wanted to see if dogs would produce the most facial expressions when they saw the face and the food, because that might then tell us they are trying to intentionally manipulate the human in order to get the food — and we didn’t see that,” said Waller.

The study suggested doggy expressions were not simply the result of internal emotions, but     9     be a mechanism of communication. The team noted their work didn’t show whether dogs simply learn to pull faces when a human pays attention to them, or whether it reflects a deeper connection. But, they said, it was notable that the animals tended to make their eyes appear bigger —     10     trait humans are known to find cute.

6 . Directions: After reading the passage below, fill in the blanks to make the passages coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.

Lovely Team Members

I fell in love with rhinos when I worked in a zoo in the 80s, and spent much of the next 20 years as the keeper of the largest captive (圈养的) group of rare black rhinos.

Being aggressive and stupid is     1     impresses urban residents about rhinos, but I discovered a group of sensitive, affectionate animals.     2     (weigh) over a ton, black rhinos are unexpectedly alert and have an unpredictable nature. However,     3     care and reassurance (安慰), they can be very trusting.

In the past few years, the number of rhinos has dropped dramatically, during     4     time I have helped look after rhinos being moved to reserves. Last year, I helped on a project to fly five black rhinos to the Serengeti National Park, where they had to be kept captive for a few weeks before     5     (release) into the wild. They lived in “bomas” wooden enclosures with “bedrooms”.

A couple of weeks before their planned release, the sky was filled with smoke and the flames were blowing over it.     6     (make) sure everything was fine, we rushed toward the bomas. I was terrified that the rhinos     7     (catch) fire, so my initial response was to release them. But I couldn’t, because they     8     (not fit) with transmitters (发射器). If I let them out, we would have great difficulty tracking them down. So I dashed back to the bomas and called the rhinos to their “bedrooms”. To my surprise, they moved without hesitation and were     9     (panicky) than I had thought. After half an hour, the wind changed direction and the fire began to die down.

That we and the rhinos had escaped unscathed (未受伤的) was a miracle. The relationship we had built with those lovely animals proved crucial.     10     it, all our work would have been for nothing. The teamwork of everybody there played a large part too and the rhinos were very much part of that team.

7 . Every year millions of breeding monarch butterflies in the U.S. and southern Canada search for milkweed plants on which to lay their eggs. Concern over shrinking habitat （居住地）has urged conservationists to create monarch-friendly spaces along roadsides, which are more than enough within the butterflies range and usually publicly owned. But traffic noise stresses monarch caterpillars out, a new study finds. They eventually do become desensitized to it—but that might cause trouble to them later on, too.

Noise pollution is known to affect the lives of birds, whales and other creatures. But until recently, scientists had never tested whether it leads to a stress response in insects. When Andy Davis, a conservation physiologist at the University of Georgia, noticed online videos of roadside monarch caterpillars apparently trembling as cars came by, he wondered how the constant noise might affect them. Davis built a custom caterpillar heart monitor, fitting a small sensor into a microscope to precisely measure monarch caterpillars’ heart rates as they listened to recordings of traffic sounds in the laboratory.

The hearts of caterpillars exposed to highway noise for two hours beat 17 percent faster than those of caterpillars in a silent room. But the heart rates of the noise-exposed group returned to baseline levels after hearing the traffic sounds nonstop for their entire 12-day development period, Davis and his colleagues reported in May in Biology Letters.

This desensitization could be problematic when the caterpillars become adults, Davis says. A rapid stress response is vital for monarch butterflies on their two-month journey to spend winters in Mexico, as they narrowly escape predators（捕食者）and fight wind currents.

Whether a noisy developmental period reduces monarchs’ survival rates remains unknown, notes Ryan Norris, an ecologist at the University of Guelph in Ontario, who was not involved in the study. But in any case, he believes roadside habitat almost certainly drive up the butterflies’ death rates as a result of crashes with cars. ”There is so much potential road habitat for monarchs and other insects一it would be such a nice thing to capitalize on,” Norris says. ‌“But you just can’t get around the traffic.” Davis adds: ”I think roads and monarchs just don’t mix.”

1. By ‌“They eventually do become desensitized to it”, the writer means that.

A．monarch caterpillars react less strongly to noise

B．monarch caterpillars are stressed out by road noise

C．conservationists are worried about butterflies habitat

D．conservationists no longer create monarch-friendly spaces

2. What inspired Andy Davis to explore the effect of noise on monarch caterpillars?

A．There had been little research on monarch caterpillars.

B．Videos showed cars crashed into monarch caterpillars.

C．There was no such record of monarch caterpillars’ heart rates.

D．He found that monarch caterpillars shook with cars moving by.

3. According to Andy Davis, how will exposure to noise influence monarch butterflies?

A．They are likely to need more time to develop.

B．They are likely to lose their way on their journey.

C．They are more likely to be killed in their migration.

D．They are more likely to die before they become adults.

4. What is Ryan Norris most likely to agree with?

A．Monarchs5 survival rates are decreasing each year.

B．It is not recommended that roadside habitat be built for insects.

C．More capital is needed to study monarchs? developmental period.

D．Butterflies’ rising death rates have nothing to do with moving cars.

8 . Telescope Searching for Space Treasure Unearths Giant Planet

A giant planet shrouded(遮盖)in clouds, in orbit(轨道)around a star 385 light years from our sun, has been captured by the James Webb Space Telescope in images described as a “_________ moment for astronomy.”

In observations led by a British astronomer, the pioneering telescope focused on a “gas giant” planet called HIP65426b. It captured images in infrared light(红外光), which allows astronomers to more _________ calculate the mass and temperature of “exoplanets”—the _________ for planets in orbit around other stars. It should ultimately allow them to detect clouds moving across their surface, _________ alien weather patterns on worlds hundreds of light years from our solar system. The images show the planet as “blobs(斑点) of light” in blue, purple, yellow and   red hues under various infrared wavelengths.

The planet is up to 12 times bigger than Jupiter and orbits about 100 times farther from its host star compared with the Earth’s distance from the sun, making it _________ for astronomers to separate the planet from its star when attempting to capture images of it. The planet is only 15 to 20 million years old, a fraction of the _________ of the Earth, which is 4.5 billion years old. Like Jupiter and Saturn, it has “no rocky surface and could not be _________,” NASA said.

The _________ of an exoplanet is usually detected when the light from a distant star appears to become less _________ at regular intervals, suggesting that a planet is passing across its face once per orbit like a tiny partial eclipse(日偏食). It is extremely difficult to capture a direct image of an exoplanet __________ they are thousands of times fainter than the stars they orbit.

James Webb used an instrument called a coronagraph to __________ light from HiP65426b’ s host star, which lies in the Centaurus constellation(半人马座), “Obtaining this image felt like __________ space treasure,” said Aarynn Carter, a researcher at the University of California. “At first, all I could see was light from the star, but with careful image processing, I was able to remove that light and uncover the planet.”

Analysis suggests that the planet has a red hue and a temperature of 1,300℃. The images could give a clue as to how Jupiter and Saturn looked in their __________ more than four billion years ago.

NASA said, “Webb’s view, at longer infrared wavelengths, shows new details that ground—based telescopes would not be able to detect __________ the intrinsic(本身的)infrared glow of Earth’s atmosphere.”

The telescope has already been used to analyze the __________ make—up of the atmosphere on another exoplanet, WASP—39b, detecting carbon dioxide by analyzing the spectrum(光谱) of light passing through its clouds.

1.

A．difficult

B．awful

C．dramatic

D．transformative

2.

A．carefully

B．precisely

C．positively

D．quickly

3.

A．term

B．reason

C．explanation

D．material

4.

A．reporting

B．forecasting

C．changing

D．revealing

5.

A．clear

B．impossible

C．easier

D．harder

6.

A．time

B．age

C．history

D．distance

7.

A．renewable

B．habitable

C．detectable

D．feasible

8.

A．form

B．component

C．existence

D．orbit

9.

A．gentle

B．natural

C．warm

D．bright

10.

A．because

B．although

C．unless

D．as if

11.

A．look out

B．find out

C．block out

D．make out

12.

A．digging for

B．hiding from

C．bringing out

D．mixing into

13.

A．infancy

B．childhood

C．youth

D．peak

14.

A．in case of

B．in the way of

C．regardless of

D．owing to

15.

A．chemical

B．physical

C．psychological

D．medical

9 . Directions: After reading the passage below, fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.

The Real Cost of Travel

Mass tourism is a relatively recent phenomenon. The tourism industry     1     (take) off in the middle of the last century and it’s been growing ever since. In the last ten years especially, more and more people have been traveling to places     2     we had previously only read about or seen on television. But what kind of impact does tourism have on the planet?

A voyage to the end of the earth?

A large cruise ship (邮轮) can carry as many as 6,000 passengers and there are upwards of 50 such ships currently     3    (sail) the seas. Cruise ships dump about 90,000 tons of waste into the oceans every year. Any harmful effects of this are made even worse by the fact     4     cruises tend to visit the same places over and over again, thus concentrating the waste in specific places.

Trash on top of the world

From remote ocean habitats to the world’s highest mountain, our trash is everywhere. Though far fewer people go climbing the Himalayas than on a cruise, their impact     5    (still feel). Tourism is vital to the economy of Nepal,     6     it is to many non-industrial countries. But for decades, climbers have been abandoning their unwanted equipment on Everest. For the last few years, clean-up teams of local and international climbers have been organizing hiking trips just     7    (pick) up the waste. One group has brought over eight tons of waste down from the mountain!

When more is not better

Tourism of a different kind is causing problems in Europe. Construction on the Mediterranean coast has been     8     control for years. Beach resorts form an almost unbroken line from Gibraltar to Greece, and natural habitats have disappeared under miles of concrete. And so we pollute the sea, the land, and the air. Low-cost air travel is booming, in spite of (or perhaps     9     (help) by) economic problems. For many Europeans, low-cost flights allow them to take several short vacations a year. Yet curiously, short flights actually have a much bigger effect on climate change than long flights. So, are there    10     (damaging) ways of seeing the world? Traveling by train, for example, is a much greener way of getting around.