1 . If you like to take a walk in the woods in the United States or you prefer to decorate a tree at Christmas, you should know that climate change is making both of those activities a lot more
Looking at two
Some forests in four regions in California, Colorado, the Northern Rockies and the southwestern part of the United States have crossed ''a(n)
Climate conditions over the past 20 years have
''Climate changes is
The problem probably won't get any better, as climate change is making intense wildfires much more
A higher number of fires and low seed availability means a high probability that these trees in these regions won't come back, Davis said. This study
A.convenient | B.difficult | C.encouraging | D.frustrating |
A.ecologically | B.apparently | C.physically | D.financially |
A.destroyed | B.worsened | C.extended | D.established |
A.necessary | B.enormous | C.critical | D.invisible |
A.accelerated | B.delayed | C.eliminated | D.strengthened |
A.transform | B.spread | C.preserve | D.escape |
A.extinction | B.decline | C.tragedy | D.increase |
A.sustaining | B.abandoning | C.facilitating | D.endangering |
A.sufficient | B.limited | C.moderate | D.approximate |
A.occasional | B.common | C.essential | D.temporary |
A.astonishing | B.hopeless | C.costly | D.irreversible |
A.world | B.state | C.human | D.forest |
A.concentrated | B.depended | C.insisted | D.commented |
A.As a result | B.For example | C.In fact | D.What’s more |
A.savers | B.managers | C.researchers | D.advocates |
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,
Lower Oxygen Levels Threaten Marine Life
Oxygen in the oceans is being lost at an alarming rate, with “dead zones” expanding rapidly and hundreds more areas showing oxygen dangerously exhausted, putting sharks, tuna, marlin and other large fish species at particular risk. Dead zones, where oxygen is effectively absent, have quadrupled(翻两番) in extent in the last half-century, and there are also at least 700 areas where oxygen is at dangerously low levels, up from 45 when research was undertaken in the 1960s.
The reasons behind this environmental collapse are multiple. Among all, pollutants generated by the industrial world have been the most destructive force to cause the unbalance, including a rising tide of plastic waste, as well as other pollutants. Seas are about 26% more acidic than in pre-industrial times because of absorbing the excess carbon dioxide in the atmosphere, according to the Intergovernmental Panel on Climate Change, with damaging impacts on shellfish in particular.
Low oxygen levels are also associated with global heating, because the warmer water holds less oxygen and the heating causes stratification(分层), so there is less of the vital mixing of oxygen-rich and oxygen-poor layers. Oceans are expected to lose about 3-4% of their oxygen by the end of this century, but the impact will be much greater in the levels closest to the surface, where many species are concentrated, and in the mid to high latitudes.
Another major cause for lower oxygen is intensive farming. When excess artificial fertilizer from crops, or wastes from the meat industry, runs off the land and into rivers and seas, it feeds algae(藻类) which bloom and then cause oxygen consumption as they die and decay.
The problem of dead zones has been known about for decades, but little has been done to tackle it. Now is high time to take actions and help the oceans function better.
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A.increasing B.defend C.partially D.depriving E.sharpened F.breaks G.endured H.granting I.issues J.activate K.roughly |
Flood-hit Venice’s shrinking population faces mounting problems
Venetians(威尼斯人) are fed up with what they see as inadequate responses to the city’s mounting problems: record-breaking flooding, environmental and safety threats from cruise ship traffic and the burden on services from over-tourism.
They feel largely left to their own devices, with ever-fewer Venetians living in the historic part of the city to
The historic flooding this week---marked by three floods over 1.5 meters (nearly 5 feet) and the highest in 53 years at 1.87 meters(6 feet, 1 inch)---has
Flood damage has been
At the public level, proposals for better administering the city including
Just 53,000 people live in the historic part of the city that tourists know as Venice, down by a third from a generation ago and dropping by about 1,000 people a year. That means fewer people watching the neighborhood, monitoring for public maintenance
5 . 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 |
There’s nothing more annoying than settling down to sleep and hearing the sound of a mosquito buzzing around you.
The only thought most of us ever give to this noise is “I need to get rid of this insect, immediately”, but it turns out that the mosquito is actually quite a(n)
A team of scientists from Oxford University in the UK, in
By placing eight cameras inside a tiny film studio, the scientists could study several mosquitoes up close. The high-tech cameras filmed the insects at 1,000 frames per second, meaning the scientists were able to study the insects’
“Recording mosquitoes during free-flight represented a huge technical challenge due to their small size,
Published in the journal Nature, the study found that mosquitoes flap their wings around 800 times a second. As a
Richard Bomphrey of the Royal Veterinary College, the study’s leader, believes that mosquitoes have a unique flying method that sets them apart from other flying insects.
“We predicted that they must make use of clever tricks, as the wings
Hopefully, the discovery of the mosquito’s special abilities will be of benefit to engineers in the future. The findings could lead to better aircraft, or even improvement to tools like lenses or pumps.
But the scientists hope their study can one day be
“The more we know about mosquitoes, the better our chance of understanding their flight behavior, how they carry disease and
A drop in the sun’s radiation can cause cold winters in parts of North America and Europe, scientists say, a finding that could improve long-range forecasts and help countries
Scientists have known for a long time that the sun has an 11-year cycle during which radiation from the sun reaches a(n)
“Our research notices a link between solar activities and regional winter climate,” lead author Sarah Ineson of the UK Met Office told the reporters in an email.
Her team focused on the data from the recent minimum solar radiation period during 2008-10, which was a(n)
The researchers found that a reduction in radiation from the sun can affect wind patterns,
“While radiation levels won’t tell us what the day-to-day weather will be, they provide the exciting
Ineson’s team used the data in a complex computer to
8 . By the end of the century, if not sooner, the world’s oceans will be bluer and greener thanks to a warming climate, according to a new study.
At the heart of the phenomenon lie tiny marine microorganisms(海洋微生物) called phytoplankton. Because of the way light reflects off the organisms, these phytoplankton create colourful patterns at the ocean surface. Ocean colour varies from green to blue, depending on the type and concentration of phytoplankton. Climate change will fuel the growth of phytoplankton in some areas, while reducing it in other spots, leading to changes in the ocean’s appearance.
Phytoplankton live at the ocean surface, where they pull carbon dioxide(二氧化碳) into the ocean while giving off oxygen. When these organisms die, they bury carbon in the deep ocean, an important process that helps to regulate the global climate. But phytoplankton are vulnerable to the ocean’s warming trend. Warming changes key characteristics of the ocean and can affect phytoplankton growth, since they need not only sunlight and carbon dioxide to grow, but also nutrients.
Stephanie Dutkiewicz, a scientist in MIT’s Center for Global Change Science, built a climate model that projects changes to the oceans throughout the century. In a world that warms up by 3℃, it found that multiple changes to the colour of the oceans would occur. The model projects that currently blue areas with little phytoplankton could become even bluer. But in some waters, such as those of the Arctic, a warming will make conditions riper for phytoplankton, and these areas will turn greener. “Not only are the quantities of phytoplankton in the ocean changing. ” she said, “but the type of phytoplankton is changing.”
And why does that matter? Phytoplankton are the base of the food web. If certain kinds begin to disappear from the ocean, Dutkiewicz said, “it will change the type of fish that will be able to survive.” Those kinds of changes could affect the food chain.
Whatever colour changes the ocean experiences in the coming decades will probably be too gradual and unnoticeable, but they could mean significant changes. “It’ll be a while before we can statistically show that the changes are happening because of climate change,” Dutkiewicz said, “but the change in the colour of the ocean will be one of the early warning signals that we really have changed our planet.”
1. What are the first two paragraphs mainly about?A.The various patterns at the ocean surface. |
B.The cause of the changes in ocean colour. |
C.The way light reflects off marine organisms. |
D.The efforts to fuel the growth of phytoplankton. |
A.Sensitive. | B.Beneficial. | C.Significant. | D.Unnoticeable. |
A.Phytoplankton play a declining role in the marine ecosystem. |
B.Dutkiewicz’s model aims to project phytoplankton changes. |
C.Phytoplankton have been used to control global climate. |
D.Oceans with more phytoplankton may appear greener. |
A.To assess the consequences of ocean colour changes. |
B.To analyse the composition of the ocean food chain. |
C.To explain the effects of climate change on oceans. |
D.To introduce a new method to study phytoplankton. |
A.They are gardeners. | B.They sell vegetables. |
C.They run a guesthouse. | D.They are scientists. |
A.Five hours. | B.Eight hours. |
C.Twelve hours. | D.Fourteen hours. |
A.They have deeper roots. | B.They don’t need sunshine. |
C.They have wider leaves. | D.They have bigger Flowers. |