1 . Nearly 40 years ago, Peter Harrison, a marine ecologist witnessed the first recorded large-scale coral bleaching（珊瑚白化）event. Diving in the Great Barrier Reef（大堡礁）, he was shocked by the scene before him. "The reef was made up of healthy corals and badly bleached white corals, like the beginnings of a ghost city," he says. Just months before, the same site was filled with colorful tropical life.
"Many of the hundreds of corals that I'd carefully tagged and monitored finally died," he says. "It was shocking and made me aware of just how weak these corals really are.”
Coral exists together with photosynthetic algae（藻类）, which live in its tissues and provide essential nutrition（and coloration）. But high temperatures and other stresses can turn algae poisonous. When this occurs, the algae may die or be removed by the coral, a process known as bleaching because the coral's clear tissue and white calcium carbonate skeleton（碳酸钙骨骼）are exposed. If the coral can't reestablish its link with algae, it will starve or become ill.
The widespread destruction Harrison saw in 1982 was repeated on many other Pacific Ocean reefs that year and the next. In 1997 and 1998 the phenomenon went global, killing some 16 percent of the world's corals. With rising temperatures, pollution, disease, increased ocean acidity, invasive species, and other dangers, Harrison's ghost cities are expanding
Scientists suppose that about four decades ago severe bleaching occurred roughly every 25 years, giving corals time to recover. But bleaching events are coming faster now—about every six years—and in some places soon they could begin to happen annually.
"The absolute key is dealing with global warming," says marine biologist Terry Hughes. "No matter how much we clean up the water, the reefs will die." In 2016, a record-hot year in a string of them, 91 percent of the reefs that consist of the Great Barrier Reef bleached.
1. Peter Harrison was shocked when diving in the Great Barrier Reef, because___________.| A．the reefs were made up of precious corals | B．the corals were ruined badly and quickly |
| C．he found a ghost city with tropical life | D．he saw the corals he had tagged before |
| A．the causes of coral bleaching | B．the weakness of corals and algae |
| C．the elements that make algae die | D．the process of building a link with algae |
| A．global warming | B．the polluted ocean | C．the white corals | D．invasive species |
| A．With algae living in its tissues, coral's white skeleton is exposed. |
| B．Solving global warming is the real solution to coral bleaching. |
| C．The reefs die because the water hasn't been cleaned thoroughly |
| D．The severest coral bleaching occurred about four decades ago. |
| A. profitably | B. fallen | C. sell | D. dangerous | AB. dump | AC. efficiently |
| AD. plastic | BC. endless | BD. civilization | CD. throwaway | ABC. stylish |
The value of upcycling
Recycling is a well-known idea that refers to reusing waste materials in any way possible. But what about “upcycling”? It’s a new word, even though it’s something that has been going on since human
One answer to this question is that we reuse fewer and fewer things, and so have become a (n) “
So upcyclers have adopted this new word to focus people’s attention on how waste cannot simply be reused, but be reused
3 . The lives of sea turtles begin on a beach when hatchlings crawl up out of their sandy nests and try to get to the sea as fast as they can. Those that aren’t eaten by killers on their way to the water swim out into the ocean until they find somewhere they can hide, eat and grow.
Ten to fifty years later, depending on the species, the sea turtles mate in shallow waters. Then the females return to the same beach where they were born to lay their eggs, and the cycle begins again.
SAVE ENDANGERED SEA TURTLES! Here’s how YOU can make a difference! 1. Only buy ethically harvested seafood. Seafood Watch. org's app will help you choose seafood providers who don't harm sea turtles. 2. Use reusable bags and water containers.Reduce your use of plastics and refuse to use plastic bags, disposable straws and water bottles. 3. Volunteer for beach clean-up activities. Help make our coastlines safer for sea turtles by removing harmful garbage like plastic bags and disposable straws. 4. Clear the beach of obstacles at night. Remove chairs and sandcastles and turn off any lights so sea turtles can more easily travel between their nests and the water. |
Turtles that successfully avoid the numerous threats to their existence can live up to 100 years. But predators, fishing nets and garbage are major problems, and only one out of every 1,000 hatchlings will reach adulthood. There are seven sea turtle species, and six of them are either threatened, endangered or critically endangered. Many organizations around the world are working hard to ensure that sea turtles will not disappear from our oceans.
1. After leaving their nests, how long will it be before the sea turtles are old enough to reproduce?| A．Ten to fifty months, depending on environmental factors |
| B．Six months, if they can survive that long in the open ocean |
| C．One to five weeks, depending on how much they find to eat |
| D．One to five decades, depending on the kind of sea turtle |
| A．Water pollution that harms sea turtles |
| B．Fishing industry practices that harm sea turtles |
| C．Other animals that eat sea turtles |
| D．Turtle overpopulation that makes food short |
| A．It gives the turtles a clear path from their nests to the ocean. |
| B．Tourists won’t trip on anything in the dark when they’re looking for turtles. |
| C．Waste on the beach ruins the view at night. |
| D．It makes it more difficult for killers to hunt the turtles. |
Imagine living on the edge of a vast desert, which is moving quietly closer to your village every day and covering your fields. The desert is on the move. This is called desertification.
Desertification occurs in regions close to an already existing desert. It generally arises from two related causes. The first is over-use of water in the area. There is not enough water in any case, and if it is not carefully used, disaster can follow. As time goes on, water shortages make farming more and more difficult. In some places, locals can remember local lakes and marshes which were once the homes for all kinds of fish and birds. They have been completely buried by the sand now. Farmers leave the land, and fields are replaced by deserts.
The second cause is misuse or over-use of the land. This means that the wrong crops are planted and need more water than is available. Ploughing large fields and removing bushes and trees means that the wind will blow away the soil. Once the soil is lost, it is hard to replace, and if there is rain, it has nowhere to go, and brings no benefit.
It is not only the farmers and villagers who suffer. Every spring, the skies over some of eastern cities, thousands of kilometers away from the deserts, can be darkened by sandstorms. Dust from deserts can have a great effect on weather systems. While desertification is perhaps being partly caused by global warming, these sandstorms can make global warming worse by adding to what is known as the greenhouse effect.
What can be done to slow down or stop the process of desertification? A great deal of work is already under way. Obviously first steps are to find new water sources. Tree planting can help, by providing barriers between desert and rich field. Some types of grass also hold the soil together, and stop the wind taking it. Without these efforts, it will be harder and harder to stop the world’s deserts in their tracks, and more and more farmers will give up and head for cities. The lesson to be learnt lies beneath the sand.
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5 . "When I was 16 years old, I was diving in Greece, but I was disappointed because I saw more plastic bags than fish.” These are the words of Boyan Slat, an engineer who designed the world's first ocean plastic cleanup system.
Every year, more than 8 million tons of plastics end up in our oceans, according to the UN Environment Programme. It is predicted that the weight of ocean plastics will match the weight of all the fish in our oceans by 2050. To prevent this from happening, in 2013 Slat created the Ocean Cleanup, an environmental non¬governmental organization, and put his plan for an ocean cleanup device into action.
After years of research and develop¬ment in the Netherlands, a device called System 001/B successfully started gathering plastics on October 2, 2019. The device uses a 600-meter-long C-shaped tube to gather all the floating rubbish. Unlike other cleanup methods, the system floats freely according to the direction of the waves, which allows waste to flow into and stay within the device. A sea anchor is attached to either end. This slows down the system as it floats through the water and allows the faster-moving rubbish, carried by the waves, to flow into its mouth. System 001/B can also collect waste below the surface using a 3-meter-deep skirt（挡板）attached to the end. After being gathered, the trash will be dragged back to shore by boat and recycled.
Right now, the system operates in the Great Pacific Garbage Patch, an area that is 3 times the size of France. Once operational, the Ocean Cleanup expects a full fleet to be able to clear 50% of the Great Pacific Garbage Patch in 5 years.
"It remains to be seen whether this dream will become a reality, but it is undeniable that humanity must work together to reduce our plastic use and repair the damage our waste has caused," Slat said. "We are starting to see a young generation that gets it and is excited about a sustainable （可持续的）future, but the question still comes down to: Are we going fast enough, and how much damage will have been done before we get there?"
1. The underlined word “match” in Paragraph 2 probably means “_________”.| A．compare | B．equal |
| C．measure | D．cover |
| A．To collect ocean plastic waste. |
| B．To help to invent System 001/B. |
| C．To protect the living environment of fish. |
| D．To do research on the ocean environment. |
| A．It can collect and recycle garbage at the same time. |
| B．It can only gather ocean waste which floats on the water. |
| C．It aims to clear up the Great Pacific Garbage Patch in five years. |
| D．It is an ocean-cleaning device which has already been put to use. |
| A．Young generations care less about the environment. |
| B．The future ecology of the oceans is deeply worrying. |
| C．People should work hard to decrease plastic pollution. |
| D．It's quite difficult to repair the damage to the environment. |
Sneakers (运动鞋) Made from Old Chewing Gum
Dutch fashion and shoe label Explicit Wear is hoping to solve one of life’s sticky situations—the annoyance of stepping in waste chewing gum on the pavement—while helping to keep Amsterdam’s city streets clean. The brand has partnered with local marketing organization Iamsterdam and sustainability firm Gumdrop
Chewing gum causes an incredibly serious ecological problem,
The waste gum will be put to good use to make stylish kicks,
Available for preorder now, the new Gumshoe sneakers—offered in both a bubblegum pink and a black/red colorway—
Nearly 2.2 pounds of gum
To help spread their sustainability message,
7 . When discussing the causes of animal endangerment, it is important to understand that individual species are not the only factors involved in this difficult situation. Endangerment is a broad
Our planet is continually changing, causing habitats to be altered and modified. Natural changes tend to occur at a(n)
It can be difficult for an individual to
| A．remark | B．issue | C．project | D．experiment |
| A．worsen | B．protect | C．seek | D．ignore |
| A．extreme | B．favorable | C．gradual | D．rapid |
| A．command | B．spirit | C．impact | D．expectation |
| A．react | B．boost | C．express | D．announce |
| A．sports | B．meanings | C．forces | D．crimes |
| A．usually | B．formally | C．freely | D．formerly |
| A．escape | B．goal | C．release | D．origin |
| A．update | B．recognize | C．cover | D．remind |
| A．predict | B．devote | C．struggle | D．transfer |
| A．obvious | B．vital | C．contemporary | D．selfish |
| A．In short | B．In a word | C．As a result | D．For example |
| A．naturally | B．completely | C．fully | D．actually |
| A．contain | B．lack | C．reduce | D．limit |
| A．growth | B．loss | C．extension | D．planting |
8 . One of the most pressing challenges the world will face in the next few decades is how to relieve the growing stress that human activities are placing on the environment. The consequences are just too great to
One priority (优先处理的事) for research is improving hydrological (水文学的) forecasting. It is
To
| A．notice | B．consider | C．ignore | D．emphasize |
| A．take over | B．get over | C．set out | D．make out |
| A．danger | B．risk | C．insecure | D．change |
| A．Moreover | B．Yet | C．Though | D．Since |
| A．for | B．over | C．with | D．among |
| A．hold | B．receive | C．gain | D．pay |
| A．basis | B．ground | C．position | D．stage |
| A．wished | B．hoped | C．decided | D．estimated |
| A．supply | B．use | C．pollution | D．shortage |
| A．health | B．condition | C．situation | D．case |
| A．endurance | B．violence | C．introduction | D．extinction |
| A．copy | B．produce | C．prevent | D．ruin |
| A．connect | B．infect | C．follow | D．study |
| A．contributed to | B．turned to | C．referred to | D．responded to |
| A．get along with | B．take advantage of | C．pass down | D．put up |
9 . How to deal with waste has been a problem since humans started producing it. As more and more people choose to live close together in cities, the waste-disposal problem becomes increasingly difficult.
During the eighteenth century, it was usual for several neighboring towns to get together to select a faraway spot as a dump site (垃圾填埋场). Residents or trash haulers (垃圾拖运者) would transport household rubbish, rotted wood, and old possessions to the site. Periodically some of the trash was burned and the rest was buried. The unpleasant sights and smells caused no problem because nobody lived close by.
Factories, mills, and other industrial sites also had waste to be disposed of. Those located on rivers often just dumped the unwanted remains into the water. Others built huge burners with chimneys to deal with the problem.
Several facts make these choices unacceptable to modern society. The first problem is space. Dumps, which are now called landfills, are most needed in heavily populated areas. Such areas seldom have empty land suitable for this purpose. Land is either too expensive or too close to residential neighborhoods. Long-distance trash hauling has been a common practice, but once farm areas are refusing to accept rubbish from elsewhere, cheap land within trucking distance of major city areas is almost nonexistent.
Awareness of pollution dangers has led to more strict rules of waste disposal. Pollution of rivers, ground water, land and air is a price people can no longer pay to get rid of waste. The amount of waste, however, continues to grow.
Recycling efforts have become commonplace, and many towns require their people to take part. Even the most efficient recycling programs, however, can hope to deal with only about 50 per cent of a city’s reusable waste.
1. The most suitable title for this passage would be “ _________ ”.| A．Places for Disposing Waste | B．Waste Disposal Problem |
| C．Ways of Getting Rid of Waste | D．Waste Pollution Dangers. |
| A．recycling it | B．burying it |
| C．burning it | D．throwing it into rivers |
| A．farm areas willingly accept waste from the city |
| B．there is cheap land to bury waste |
| C．ways to deal with waste stay the same as those in the past |
| D．it is no longer possible to have landfills, even in rural areas |
| A．suggest a better way to get rid of waste |
| B．warn people of the pollution dangers we are facing |
| C．call on people to take part in recycling programs |
| D．draw people’s attention to waste management |
10 . Each year, backed up by a growing anti-consumerist movement, people are using the holiday season to call on us all to shop less.
Driven by concerns about resource exhaustion, over recent years environmentalists have increasingly turned their sights on our “consumer culture”. Groups such as The Story of Stuff and Buy Nothing New Day are growing as a movement that increasingly blames all our ills on our desire to shop.
We clearly have a growing resource problem. The produces we make, buy, and use are often linked to the destruction of our waterways, biodiversity, climate and the land on which millions of people live. But to blame these issues on Christmas shoppers is misguided, and puts us in the old trap of blaming individuals for what is a systematic problem.
While we complain about environmental destruction over Christmas, environmentalists often forget what the holiday season actually means for many people. For most, Christmas isn’t an add-on to an already heavy shopping year. In fact, it is likely the only time of year many have the opportunity to spend on friends and family, or even just to buy the necessities needed for modern life.
This is particularly, true for Boxing Day, often the target of the strongest derision(嘲弄) by anti-consumerists. While we may laugh at the queues in front of the shops, for many, those sales provide the one chance to buy items they’ve needed all year. As Leigh Phillips argues, “this is one of the few times of the year that people can even hope to afford such ‘luxuries’, the Christmas presents their kids are asking for, or just an appliance that works.”
Indeed, the richest 7% of people are responsible for 50% of greenhouse gas emissions. This becomes particularly harmful when you take into account that those shopping on Boxing Day are only a small part of our consumption “problem” anyway. Why are environmentalists attacking these individuals, while ignoring such people as Russian billionaire Roman Abramovich, who has his own￡1.5bn yacht with a missile defence system?
Anyway, anti-consumerism has become a movement of wealthy people talking down to the working class about their life choices, while ignoring the real cause of our environmental problems. It is no wonder one is changing their behaviours—or that environmental destruction continues without any reduction in intensity.
1. It is indicated in the 1st paragraph that during the holiday season, many consumers .| A．ignore resource problems |
| B．are fascinated with presents |
| C．are encouraged to spend less |
| D．show great interest in the movement. |
| A．has targeted the wrong persons |
| B．has achieved its intended purposes |
| C．has taken environment-friendly measures |
| D．has benefited both consumers and producers |
| A．madness about life choices |
| B．discontent with rich lifestyle |
| C．ignorance about the real cause |
| D．disrespect for holiday shoppers |
| A．anything less than a responsibility | B．nothing more than a bias |
| C．indicative of environmental awareness | D．unacceptable to ordinary people |
