1 . As heat waves continue to ravage the planet, air conditioners are becoming more and more common. However, these "active" cooling devices are posing problems because the electricity consumption which most people are concerned about and the release of ozone-damaging chemicals worsen the greenhouse gas effect, resulting in the creation of heat islands and further thermal pollution. Therefore, "passive" cooling, which doesn't have such effects, has attracted considerable attention from both scientists and ordinary people in recent years.
In a recent study, a team of researchers from China and US presented an eco-friendly, low-cost smart coating to keep buildings cooler while consuming zero electricity. Infrared radiation-based passive cooling has been investigated since 2014, but challenges, mainly the expensive and unsustainable design, have greatly limited their large-scale and widespread application. Besides, the imbalance in cooling ability of these coatings during the day and night tends to lead to great day-night temperature differences as more heat is lost than gained at night.
The solution therefore requires a "smart" mechanism that can both enhance daytime cooling and minimize nighttime heat loss. To do this, the researchers created a new smart coating comprised of conventional building materials, including titanium dioxide nanoparticles, fluorescent microparticles, and glass microspheres that were engineered to reflect most of the sunlight. Specifically, the titanium dioxide particles effectively reflect sunlight through light scattering（撒播）while the fluorescent particles increase the amount of reflection by changing the absorbed sunlight into fluorescence emissions, which drive more heat away from the building. Meanwhile, the glass microspheres re-send mid-infrared broadband radiation, allowing not only heat loss, but allowing heat exchange to take place between the building and the sky.
The coating was tested on a model concrete building. Through this efficient heat exchange with the sky, daytime cooling was strengthened while nighttime cooling was reduced. The building's inside temperature was always maintained at around 26℃, even when the out-side temperature varied from 24℃ to 37℃ during the day. We believe this new coating will make it to commercialization soon, enabling a sustainable, passive cooling technology that could help to fight climate change and the global energy crisis.
1. What is the virtue of passive cooling?| A．It is simple to design. | B．It uses no chemicals. |
| C．It is smart. | D．It uses no power. |
| A．It was hard to design. |
| B．Its material was hard to produce. |
| C．Its heat loss and cooling are imbalanced. |
| D．It wasn't tested on a model concrete building. |
| A．Metal. | B．System. | C．Platform. | D．Building. |
| A．The principle of air-conditioning. |
| B．The differences between active and passive cooling. |
| C．A new coating to keep buildings cool without electricity. |
| D．A new building to maintain its inside temperature without electricity. |
2 . About 97% of the world’s water is salty and is found in our oceans and seas. But, as we can’t drink sea water, how can it be important?
Every part of our seas and oceans contains an amazing number of animals and fish that live at different ocean depths. Most of the different species of animals and fish depend on simple plants for their food. These simple plants called algae (海藻) drift near the surface of the ocean and use sunlight to turn carbon dioxide and water into food and oxygen. In fact, algae produce over half of the oxygen people breathe. How important sea water is!
Each plant or animal in our seas and oceans is an important link in a food chain. The algae are eaten in large amounts by microscopic animals, which are in tur consumed by larger animals. These food chains are delicately (微妙地) balanced.
The bad news about the food chains in the oceans is that they are under threat because of man. People once thought that the oceans were so big that it didn’t matter if we dumped rubbish into them or caught huge quantities of fish and whales for food. But we now know this is not true and fish stocks in the oceans have started to drop.
Thankfully, the world is taking steps to protect the future of our oceans by introducing international agreements to protect marine habitats. Most counties have introduced fishing restrictions (限制) to protect fish stocks in the oceans and new techniques are being pioneered to cope with pollution. Finally, the importance of protecting oceans is being made known to more people. This is just the beginning of a long process to protect the oceans for our future. We depend on the oceans for fish which are an important part of the human diet. How important sea water is!
1. From the passage, we learn that _________.| A．most fish and sea animals live at the surface of the seas |
| B．it is very difficult to break the balance of a food chain |
| C．over-fishing has caused the decrease in fish stock |
| D．it won’t be long before the problems concerning oceans will be solved |
| A．处理 | B．保护 | C．增加 | D．检验 |
| A．The use of international agreements. |
| B．Forbidding fishing to protect fish socks. |
| C．The use of new techniques. |
| D．Raising people’s awareness of the need to protect oceans. |
| A．The Importance of Sea Water |
| B．Life in the Oceans |
| C．How to Protect Food Chains |
| D．How to Deal with Seawater Pollution |
3 . Not long ago, Egypt marked the 150th anniversary of the opening of the Suez Canal. The canal connects the Mediterranean Sea to the Red Sea and the Indian Ocean. It helped speed world trade between the East and the West. But the man-made waterway has also helped speed the rise of other things, such as invasive(入侵的)non-native species (物种). Scientists say the invasive creatures have damaged the Mediterranean’s environment and caused native species to disappear.
The number of non-native creatures has risen since the Suez Canal was widened in 2015. The “New Suez Canal” has raised concerns in Europe and brought disagreement from many Mediterranean countries. Bella Galil is an Israeli biologist who has studied the Mediterranean for over 30 years. She says much of the ecological(生态的)damage cannot be repaired. She said urgent action is needed to ease the effects of the invasive fish and other sea life.
Galil works at Tel Aviv University’s Steinhardt Museum of Natural History. She noted that the widening and deepening of the Suez Canal has created a “moving aquarium” of species. These creatures could make coastal waters almost unusable for human beings. Galil believes the number of invasive species has reached 400. That is twice the number 30 years ago. She said this is a “historic example of the dangers of unintended consequences.”
Israel is now dealing with huge numbers of poisonous(有毒的) jellyfish that affect coastal power centers and keep people from visiting the seashore. Other poisonous species, such as the lionfish and silver-cheeked toadfish, are also appearing.
Galil said the problems of invasive species can be compared to those of climate change, pollution and over-fishing. She argues that the new species have caused a major “restructuring” of the environment. This has endangered native species.
Some experts have suggested that increasing salt levels in the canal itself could create a barrier(障碍物) that would keep invasive species out.
1. What lesson can we learn from the effects of the Suez Canal?| A．Seeing is believing. | B．Every coin has two sides. |
| C．Let nature take its course. | D．Everyone makes mistakes. |
| A．Uncaring. | B．Unclear. | C．Supportive. | D．Against. |
| A．It is from bad to worse. | B．It remains the same. |
| C．It improves a great deal. | D．It has become a completely new one. |
| A．To add some background information. | B．To stress the harm of invasive species. |
| C．To solve the problem of invasive species. | D．To compare their similarities and differences. |
4 . 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 |
5 . Royal Dutch Shell is launching a $ 300 million and forestry program, at a time when an increasing number of oil companies are putting money in carbon offset (碳补偿)plans to meet climate goals. The company will spend the money over the next three years on projects to store carbon, including large forests in the Netherlands and Spain, and will start offering motorists the option of purchasing carbon offsets when they buy petrol at the pump.
The executives of the company explained that these carbon offset projects were a new business opportunity for Shell, as well as a way to meet its climate targets. “We believe that over time we will be building a business, because these carbon credits will become more valuable as carbon becomes more limited," they said. Shell recently decided to cut its net carbon footprint (碳排放)by 2-3 percent in five years, which includes emissions (排放)from the products it sells. The company plans to produce carbon credits from the forestry projects, then sell these credits on to customers buying its oil and gas products, or apply the credits to its own operations to lower its carbon footprint.
Plants absorb carbon dioxide as they grow and restoring forests and other natural areas is considered one of the simplest ways to store carbon. However, the voluntary market for carbon credits based on forestry projects has its critics, as projects in developing countries can be hard to monitor. Shell's move has also been criticized by some environmentalists. They worried that there was a risk of " greenwash when companies invested in forestry projects. "There is an entire debate about whether forestry projects truly reduce emissions or not," they said, pointing out that planting in one area could cause deforestation (滥伐森林)to another.
Shell said it would rely on the third party to ensure its forest program to meet the Voluntary Carbon Standard and strict biodiversity requirements. Mark Lewis, head of climate change investment research at BNP Paribas, said, " Planting trees to offset emissions, as far as it goes, is a step in the right direction."
1. What is popular among oil companies these days?| A．Studying climate changes. |
| B．Launching forestry programs. |
| C．Working out carbon offset plans. |
| D．Attracting motorists to buy their petrol. |
| A．By quitting the emissions of its products. |
| B．By reducing its carbon footprint by a quarter. |
| C．By limiting the oil used by its own operations. |
| D．By putting carbon credits it produces on the market. |
| A．The projects can't really stop carbon emissions. |
| B．The projects are hard to monitor in poor countries. |
| C．The projects may lead to deforestation in other forests. |
| D．The projects haven't met strict biodiversity requirements. |
| A．Discount. | B．Cheat. |
| C．Decline. | D．Change. |
6 . Many Beijing residents go to great lengths to avoid breathing the city's smoggy air, especially when it reaches critical pollution levels, but one local entrepreneur decided that canning(灌装) and selling this poor quality air as a souvenir would be a great idea. Believe it or not, he was right.
After seeing a number of companies achieve commercial success by canning fresh air from countries like France, Canada or Australia and selling it in China, Dominic Johnson-Hill, a British-born citizen of Beijing and owner of the Plastered 8 souvenir shop, decided to turn the idea on its head and sell canned Beijing air throughout China and abroad.
"I'd seen people going crazy to buy canned air from Canada and Australia, so I thought it was time to push business the other way," the entrepreneur said. "They' re perfect gifts! What else are you going to take home when you go home from Beijing? A roast duck? A Plastered T-shirt? These cans are light, portable, you can just imagine someone' s face when they unwrap (打开) it for Christmas."
The few mouth-fulls of Beijing air come in standard tin cans featuring a couple of iconic city landmarks as well as a bitter description of the contents: "a unique mix of nitrogen, oxygen and some other stuff". The ironic (讽刺的) souvenirs cost 28 RMB (US $4) and are available at the Plastered 8 shop, as well as on its online shop. But if you're actually considering buying some, you'd better ask shop in advance, as they are virtually flying off the shelves. Johnson-Hill said that his shop is selling hundreds of Beijing air cans every day.
Personally, the well-sold can probably is an awakening for the public to be concerned about the living conditions. Yet one thing that’ s not particularly clear is whether the air is really collected from Beijing, as the cans are labeled as "Made in Shenzhen". There's a big chance that' s just a kind of Plastered 8 humor, as they also list "Choking Hazard" and "May have unidentified objects inside." as warnings.
Anyway, it is probably a unique way to arouse public awareness of protecting the environment.
1. What contributes to Dominic’s idea of canning and selling the poor quality air?| A．Try to get used to it. | B．Sell it all over the world. |
| C．Can it as a souvenir. | D．Try to push business the other way. |
| A．Satisfied. | B．Surprised. |
| C．Frightened. | D．Refreshed. |
| A．liquids | B．objects |
| C．minerals | D．risks |
| A．There are unidentified objects in the canned Beijing air. |
| B．The Plastered 8 souvenir shop is famous for its humour. |
| C．People should make efforts to protect the environment. |
| D．Dominic Johnson-Hill likes the poor quality air in Beijing. |
7 . The United Nations Environment Program is calling for urgent action to reduce growing risks from chemicals. Better management of chemicals could save millions of lives and billions of dollars. As estimated, 143,000 chemicals are now produced. Yet the report says only a small number of these chemicals have been studied for their effects on human health and the environment. It says death and disability rates are high from the unsafe use of chemical products.
Sylvie Lemmet, director of the UNEP, says poor management of chemicals has a high economic cost. For example, she says the cost is higher than the amount of overseas development aid, or ODA, for health care in sub-Saharan Africa.
She says, “If you look at the estimated cost of poisoning from pesticide (杀虫剂) in sub-Saharan Africa, only the injury and the loss of working time is estimated to be 6.3 billion US dollars in 2009. This is higher than the total ODA that is going to the health part in the same area.”
The UNEP estimates that chemical sales worldwide will increase by around three percent a year until 2050. Chemical production is moving quickly from developed to developing countries. By 2020, chemical production is expected to increase by 40 percent in Africa and the Middle East and 33 percent in Latin America. One of its biggest concerns is pollution of rivers and lakes by pesticide and fertilizer. Other major concerns are heavy metal pollution from the production of cement (水泥) and textiles (纺织品), and dioxin pollution from mining.
The UN report urges the chemical industry and governments to work together to develop safety policies. It says preventing harm costs less than fixing it.
1. The purpose of Paragraph 3 is mainly to indicate that ______.| A．chemicals have a high production cost |
| B．Africa needs more development aid |
| C．the use of pesticide causes a great loss |
| D．the estimated cost of poisoning from pesticide is incorrect |
| A．Pesticide. | B．Fertilizer. |
| C．Heavy metals. | D．Minerals. |
| A．The mass production of cement and textiles. |
| B．Lack of research funds on chemicals. |
| C．Poor management of chemicals. |
| D．Contradictions between chemical producers and governments. |
| A．The truth in Sylvie Lemmet’s comments |
| B．A UN warning about chemical dangers |
| C．The unpredictable future of chemical industry |
| D．Preventing is much better than fixing |
8 . One evening, Catherine was at home as usual. As her
With a deep
Catherine and Davey
Being at the right place at the right time became almost normal, and they realized that much of what they
| A．thoughts | B．balance | C．hands | D．position |
| A．blamed | B．interrupted | C．frightened | D．moved |
| A．found | B．cheered | C．dropped | D．taught |
| A．abandoning | B．raising | C．shaking | D．hiding |
| A．pride | B．trust | C．love | D．fear |
| A．plan | B．promise | C．mistake | D．difference |
| A．corrected | B．repeated | C．described | D．discovered |
| A．driving | B．fixing | C．riding | D．covering |
| A．slowly | B．secretly | C．helplessly | D．frequently |
| A．heard | B．shared | C．wrote | D．read |
| A．problems | B．costs | C．efforts | D．choices |
| A．depending on | B．replying to | C．worrying about | D．meeting with |
| A．money | B．food | C．time | D．room |
| A．equipped | B．supplied | C．decorated | D．filled |
| A．set off | B．broke down | C．headed for | D．held on |
| A．rest | B．help | C．understanding | D．practice |
| A．volunteers | B．members | C．tourists | D．reporters |
| A．purpose | B．question | C．decision | D．lesson |
| A．introduced | B．expected | C．experienced | D．examined |
| A．turn | B．limit | C．compare | D．devote |
Litter is everywhere，doing great harm
The story began with his 6-year-old daughter.One day they were going on a hike when the girl noticed a
Jeff started to take
Litterati is more than an app.It is a highly
10 . At the age of seven, while his friends were spending their allowances on candy and toys, Jose Adolfo Quisocola, from Peru, came up with the creative idea of an eco-bank, which allows kids of all ages to become economically independent and financially wise while also helping the environment.
Established in 2012, The Bartselana Student Bank is the world’s first cooperative bank for kids. Whoever wants to join has to bring in at least 5 kilograms(11 pounds) of solid waste(paper or plastic) and establish a savings goal. Once accepted, all bank “partners” are required to deposit at least one additional kilogram(2.2 pounds) of recyclables on a monthly basis and obey other requirements, such as attending financial education and environmental management workshops. The waste accumulated is sold to local recycling companies, who, thanks to some clever negotiation by Jose, pay a higher-than-market rate for everything brought in by Bartselana Student Bank members. The funds received are placed in the individual’s account where they collect until his／her savings goal is reached. The account holder can then withdraw his／her money, or choose to leave it and continue to grow for a bigger target.
“At the beginning, my teachers thought I was crazy or that a child could not undertake this type of project, ” Jose recalls. “They did not understand that we are not the future of the country but its present. Luckily, I had the support of the school principal and an assistant in my classroom.”
The youngster’s persistence paid off. Today, the eco-bank, which now has the support of several local institutions, has ten educational centers and begins accepting applications from kids all across Peru. On November 20, 2018, the young boy was awarded the famous Children’s Climate Prize (CCP). “Jose’s eco-bank is a brilliant way of linking economy and climate impact, both in thought and practice. The potential impact is amazing,” a judge said.
Hopefully, Jose’s success will inspire more kids and adults to come up with new ideas that create value while helping the environment. As the boy says,” Together we can change the world…we just need an opportunity…”
1. For what main purpose was the eco-bank created?| A．To educate children how to spend their allowances. |
| B．To help children become independent from their parents. |
| C．To raise children’s awareness of environmental protection. |
| D．To encourage children to buy whatever they want. |
| A．The history of the eco-bank. |
| B．The requirements of membership. |
| C．The wise way to deal with waste. |
| D．The process of running the eco-bank. |
| A．Lack of enough support. | B．Lack of enough money. |
| C．Lack of relevant experience. | D．Lack of relevant knowledge. |
| A．An Amazing Boy，Jose |
| B．Recycling does Count Much |
| C．An Opportunity to Change the World |
| D．An Eco-bank, Economical and Ecological |
