To understand the effect of ice melting (融化) around the world we first have to understand what an ice sheet actually is. Covering 5. 4 million square miles in Antarctica (南极洲) and 656, 000 square miles in Greenland, an ice sheet is actually a huge land of ice from the Ice Age. These sheets form in areas where snow that falls in winter does not melt entirely over the summer. This ice, home to different species of animals, is now melting at a rate that cannot support the life it currently holds.
Many of these creatures rely on ice sheets as land for resting, hunting and protection, yet as the size decreases, they are forced out of their homeland in search of other land on which to live. Often this means journeys to search for food and an imbalanced ecosystem happens when different species are forced together onto the coast.
Since the 1990s, the deer population has dropped by 56 percent— climate change has caused warmer temperatures over winter setting off rainfall instead of snow, which freezes more quickly underfoot and makes it harder to walk and search for food. In the summer, frozen layers of land melts and releases trapped diseases which bring death to animals. A similar situation has fallen on the polar bears who suffered a 40 per cent population loss between 2001 and 2010.
Quite apart from these problems, the threat of sea levels rising if the ice caps were to disappear is approaching. If the Greenland Ice Sheet melted, the sea level would rise around six meters, and if the Antarctic Ice Sheet melted, sea levels would rise by around 20 feet. As a matter of fact, sea levels have risen about eight inches since 1880, three of which were gained over the last 25 years. This seemingly small amount has already caused dangerous flooding, loss of farmland and more deadly storms.
While we’re still a long way from losing the ice sheets all together, we’ve already lost too much and if we don’t take climate change seriously now, we will certainly hit the point of no return.
1. What is an ice sheet according to the passage?| A．It is an area where ice never melts in summer. |
| B．It is a land of ice that covers all Greenland. |
| C．It is a large area of ice that exists for centuries. |
| D．It is an ice world for animals to live on. |
| A．It makes it easier to travel to other land. |
| B．It increases the population of sea animals. |
| C．It makes their surroundings more comfortable. |
| D．It causes hunger and illness among animals. |
| A．Ice sheet will soon disappear from the Earth. |
| B．Sea levels are rising faster in recent years. |
| C．Greenland will be the first to lose all its ice. |
| D．All natural disasters happen due to sea level rise. |
| A．Effect of Melting Ice Sheets | B．Ice, Sea and Animals |
| C．Cause of Melting Ice Sheets | D．Changes of Sea Levels |
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【推荐1】The second little pig was unlucky. He built his house from sticks, which was blown away by a wolf. His brother, by contrast, built a wolf-proof house from bricks. The fairy tale could have been written by an agent for the construction industry, strongly favoring brick, concrete and steel. However, in the real world it would help reduce pollution and slow global warming if more builders copied the wood-loving second pig.
No other building material has environmental credentials (认证信息) as exciting and overlooked as wood. The energy required to produce a laminated wooden beam (层压木梁) is one-sixth of that required for a steel one of comparable strength. As trees take carbon out of the atmosphere when growing, wooden buildings contribute to negative emissions by storing the stuff. And for refitting older buildings to be more energy efficient, wood is a good insulator (绝缘体). A softwood window frame provides nearly 400 times as much insulation as a plain steel one of the same thickness and over a thousand times as much as an aluminium (铝) equivalent.
But such bigger stories are still uncommon. Governments can help push the industry to use more wood, particularly in the public sector — the construction industry’s biggest client. That would help wood-building specialists achieve greater scale and lower costs. Zero-carbon building regulations should be altered to take account of the emissions that are presented in materials.
Construction codes could be regulated to make building with wood easier. Here the direction of travel is wrong. Britain, for instance, is banning the use of timber on the outside of tall buildings after 72 people died in a tower fire in London in 2017. That is a nonsense. Grenfell Tower was covered in aluminium and plastic, not wood. Modern cross-laminated timber (交叉层叠木板) panels perform better in fire tests than steel ones do.
Carpentry alone will not bring the environmental cost of the world’s buildings into line. But using wood can do much more than is appreciated. The second little pig was not wrong, just before his time.
1. The purpose of the writer telling the story in the first paragraph is to _______.| A．attract the readers’ attention | B．make the argument more convincing |
| C．criticize the author of the tale | D．lead in the topic of the text |
| A．wood is a good insulator |
| B．such skyscrapers with wood are uncommon currently |
| C．the unique advantages of wood material being friendly environmental |
| D．how wood reduces the emission of carbon dioxide |
| A．To encourage the construction industry’s biggest client to use more wood. |
| B．To transform Zero-carbon building regulations. |
| C．To arouse the public’s awareness of protecting the woods. |
| D．To regulate the Construction codes. |
| A．the second pig in the tale was unlucky |
| B．the outside of tall buildings Grenfell Tower could have been constructed in wood |
| C．we haven’t appreciated the characteristics of using wood at all |
| D．wood-building specialists will achieve greater profits |
【推荐2】Just like his parents and grandparents before him, Alaska teenager Carl Smith lives off the land, whether it’s catching salmon (鮭鱼) for dinner or collecting wood to keep warm in winter.
But the climate emergency is threatening the way Carl and his Yupik Eskimo family members have lived for generations, prompting (促使) the teenager to step into a role he never imagined he’d have: that of climate activist.
“I wanted to get the word out,” Carl, 18, tells People for the Earth Day special. “Nobody really knows what’s happening out here in rural Alaska.”
For Carl, home is Akiak, a small village of about 400 people who rely on the Kuskokwim River for salmon in the summer, and geese and moose (驼鹿) hunting in the spring and fall to keep their stomachs fed.
But as global temperatures rise, Alaska’s winters are getting shorter, and the permafrost (永冻土层) near Akiak is melting, causing large waves in the river that have been eroding (侵蚀) the shoreline as they crash; Carl estimates they’ve so far lost about 100 feet of land.
Carl’s concerns received national attention in 2019, when he and 15 other teenagers filed a landmark complaint with the United Nations Committee on the Rights of the Child, charging five countries with violating their rights as children by not doing enough to end the climate crisis and the threat it poses to their futures.
The complaint was spearheaded by attorney Michael Hausfeld, who says Carl stood out because climate change is directly affecting his life. “He’s experiencing it firsthand. He is watching his life slowly diminish (缩小) and disappear, M Hausfeld tells People. “Carl could become an icon for the concept of intergenerational equity (公正), which is an obligation of states to secure a living planet for the next generations.”
Carl traveled to New York for the Human Rights Day Summit, where he met fellow activists like Greta Thunberg and Alexandria Villasenor, who are also part of the complaint.
“When I heard the stories from people around the world, I felt like I was with them,” he says. “We’re experiencing different things, but in a way, it’s all the same. I just felt connected to them in some way.”
“I’m going to keep telling everyone that climate’s coming, climate’s changing, and it’s happening everywhere in the world,” he says. “If we don’t do anything about it, we won’t have a home to live in. I just hope everyone listens.”
1. What does the underlined phrase “get the word out” in paragraph 3 probably mean?| A．Let people know about something. |
| B．Conduct research on something. |
| C．Stop something from happening. |
| D．Go out for an adventure. |
| A．Five countries ignored the climate crisis. |
| B．The Eskimos lived on what nature gave them. |
| C．The Eskimos’ overuse of natural resources caused damages. |
| D．Some countries were charged with violating international obligations. |
| A．The population is decreasing. |
| B．Some species are going extinct. |
| C．More and more land is being lost. |
| D．Forests are being destroyed. |
| A．Doubtful. | B．Critical. | C．Supportive. | D．Worried. |
| A．To call attention to the climate crisis. |
| B．To protect children from violence. |
| C．To voice support for Eskimo children. |
| D．To raise money for his hometown. |
| A．Optimistic. | B．Generous. | C．Modest. | D．Responsible. |
【推荐3】At one time，computers were expected largely to remove the need for paper copies of documents because they could be stored electronically. But for all the texts that are written，stored and sent electronically, a lot of them are still ending up on paper.
It is difficult to measure the quantity of paper used as a result of the use of Internet-connected computers, although just about anyone who works in an office can tell you that when e-mail is introduced, the printers start working overtime. "I feel in my bones this revolution is causing more trees to be cut down. "says Ted Smith of the Earth Village Organization.
Perhaps the best sign of how computer and Internet use pushes up demand for paper comes from the high-tech industry itself, which sees printing as one of its most promising new markets. Several Internet companies have been set up to help small businesses print quality documents from a computer. Earlier this week, Hewlett-Packard Co. announced a plan to develop new technologies that will enable people to print even more so they can get a hard copy of a business document, a medical record or just an on-line e-mail, even if they are nowhere near a computer. As the company sees it, the more use of the Internet the greater demand for printers.
Does all this mean environmental concerns have been forgotten? Some activists suggest people have been led to believe that a lot of dangers to the environment have gone away. "I guess people believe that the problem is taken care of, because of recycling, "said Kelly Quirke, director of the Rainforest Action Network in San Francisco. Yet Quirke is hopeful that high-tech may also prove helpful. He says printers that print on both sides are growing in popularity. The action group has also found acceptable paper made from materials other than wood, such as agricultural waste.
1. Which of the following statements is NOT true?| A．Documents can be stored in computers electronically. |
| B．Computers effectively cut down the use of paper. |
| C．A large number of e-mails need to be printed in reality. |
| D．Printers are in a greater demand owing to the Internet. |
| A．the rapid development of small businesses |
| B．the opening up of new markets |
| C．the printing of high quality copies |
| D．the increased use of the Internet |
| A．they see a growing market for printers |
| B．printers in many offices are working overtime |
| C．small companies need more hard copies |
| D．people are concerned about the environment |
| A．to encourage printing more quality documents |
| B．to develop new printers using recycled paper |
| C．to find new materials for making paper |
| D．to plant more fast growing trees |
| A．Computers and Printers |
| B．E-mail and the Business World |
| C．Internet Revolution and Environment |
| D．Modern Technology and New Markets |
【推荐1】If you visit Uluwatu temple in Bali, be cautious. The long-tailed temple monkeys there are well-known thieves. Since a long time ago, they have made a living by robbing visitors of their possessions and then holding those objects until a ransom in the form of food is paid. But Jean-Baptiste Leca of the University of Lethbridge, in Canada, wondered whether these monkeys are cleverer still. Sometimes, they do not accept the first offer and hold out for more. He therefore asked himself whether they are able to assess how valuable an object is to its owner, and factor that into their negotiations.
Dr. Leca and his colleagues conducted their experiment by wandering around the temple with video cameras, recording the activities of the monkeys. Every time they saw a monkey show interest in a particular tourist? they recorded the interaction. To work out what was going on, they had first to establish the relative values of food rewards to monkeys, and of stealable objects to people.
To confirm which stealable objects are most valued by people, they divided them into six classes: empty containers, such as phone cases and plastic bottles; accessories (搭配物) such as hairpins and key rings; hats and shoes; spectacles and sunglasses; and electronics and wallets. They then observed how often victims bothered to bargain with the thief for the return of property belonging to different classes, and thus classified objects into low value, medium value and high value.
They found that monkeys do, indeed, have a complicated sense of what they are doing — at least, adults and sub-adults do. These animals have a preference for stealing high-value items, and will often hold out either for more rewards, or for better ones, if they are in possession of such items. But this is something that they have to learn how to do as they grow up. Young monkeys make no such distinctions, and sub-adults are less good at doing so than adults.
1. What is the purpose of Leca's research?| A．To prove monkeys are cleverer than men. |
| B．To find out what is valuable for monkeys. |
| C．To record the negotiations between monkeys. |
| D．To make sure monkeys can judge item values. |
| A．Bilk. | B．Reward. | C．Tax. | D．Rent. |
| A．By the material of objects. | B．By the preference of victims. |
| C．By the buying price of objects, | D．By the frequency of bargaining. |
| A．Young monkeys can evaluate items. | B．All monkeys prefer high-value items, |
| C．Monkeys have a simple sense of acts. | D．Monkeys' stealing is an acquired skill. |
Chelsea is not alone. In a recent survey by Kids Health£.org, more than 70% of kids aged 9 to 13 said they worry about tests. It’s no wonder. Across the United States, public schools give more than 250 million standardized tests each year.
Why do kids have to take so many tests? The No Child Left Behind (NCLB) law requires that students in grades 3 through 8 be tested each year. The law’s goal is for all students to be at grade level by 2014. Students must pass the tests and meet other requirements or their schools may be shut down.
The U.S. Secretary of Education Arne Duncan wants to change NCLB. But that doesn’t mean he favors getting rid of tests. Duncan believes tests should be used mainly to evaluate kids’ strengths and weaknesses. Tests, Duncan says, should not be used to punish kids or their schools for failure.“The goal is to focus on great teaching and learning,”Duncan said.
Under NCLB, each state sets its own standards for students to meet. The result, Duncan says, is that states are making the tests easier. To fix this problem, 48 states are now working together to create common standards. “I want to set a high bar for kids, ” Duncan says, “so they’ll be in great shape to achieve their dreams.”
Like them or not, tests are here to stay. So how can you handle test nerves? Schools are teaching students to relax through deep breathing and stretching (伸展运动) . In Oakland, California, Principal Zarina Ahmad of Piedmont Avenue Elementary leads her students in a cheer to get them excited about learning.
“Kids are under high pressure,”says Ahmad. “There has to be time for kids to be kids. Still, we need tests to help us assess what students have yet to learn.”
1. The underlined part “the butterflies in my stomach” can be replaced by .
| A．nervous | B．guilty | C．exciting | D．proud |
| A．is focusing on teaching methods in schools |
| B．is requiring schools to make the tests more difficult |
| C．is trying to make schools be responsible for students |
| D．aims to evaluate kids’ strengths and weaknesses by means of tests |
| A．it’s possible to get rid of tests |
| B．schools have no good way to deal with students' stress |
| C．tests help assess what students have to learn |
| D．schools are aware of students’ stress caused by tests |
| A．Why kids are more stressed than before? |
| B．Kids’ tips for test success |
| C．How to deal with test stress |
| D．Put kids to the standardized test |
【推荐3】The history of life on earth has been a history of interaction between living things and their surroundings. To a large extent (程度), the physical form and the habits of the earth’s vegetation and its animal life have been shaped by the environment. Considering the whole span of earthly time, the opposite effect, in which life actually modifies its surroundings, has been relatively slight (轻微的). Only in the present century has one species—man got significant power to change the nature of his world.
During the past quarter century this power has not only become increasingly great but it has changed in character. The most alarming of all man’s assaults (侵犯) upon the environment is the contamination (污染) of air, earth, rivers, and sea with dangerous and even deadly materials. This pollution is for the most part irrecoverable. In this now universal contamination of the environment, chemicals are the wicked partners of radiation (辐射) in changing the very nature of the world, the very nature of its life.
It took hundreds of millions of years to produce the life that now lives on the earth. Given time not in years but in millennia (千年), life adjusted and a balance has been reached. But in the modern world there is no time.
I don’t mean that chemical insecticides (杀虫剂) must never be used. However, we have to admit that we have put poisonous and biologically harmful chemicals indiscriminately (恣意地) into the hands of persons largely or wholly ignorant of their possible harm. We have forced enormous numbers of people to contact these poisons, without their permission and often without their knowledge. We admit, furthermore, that we have allowed these chemicals to be used with little or no advance investigation of their effect on soil, water, wildlife, and man himself. Future generations are unlikely to forgive our lack of concern for the integrity (完好无损) of the natural world that supports all life.
1. What does the underlined word “modified” in the first paragraph mean?| A．destroy | B．change | C．explore | D．maintain |
| A．chemicals | B．radiation | C．insecticides | D．vegetation |
| A．Chemicals must not be used for the sake of the environment. |
| B．The environment is greatly affected by vegetation and animals. |
| C．The future generations are likely to lack concern for the environment. |
| D．The pollution of the environment is largely due to irresponsible humans. |
| A．What humans should do with chemicals for future generations. |
| B．How the environment affects the living things on the earth. |
| C．What kind of chemicals are less harmful to the environment. |
| D．How we humans make the best of chemicals to save the earth. |
