2023届高三英语培优外刊阅读学案环境话题(含答案)
2024届高三下学期英语培优外刊阅读学案 环境话题
高三英语培优外刊阅读班级：____________学号：____________姓名：____________外刊精选｜印度首都雾霾爆表，民众竟仍出门健身进入秋冬，印度各城市就开始进入“雾霾季”：焚烧秸秆和燃煤取暖造成了严重的空气污染。
而刚刚结束的印度教节日排灯节，民众不顾禁令燃放烟花爆竹，让本就严峻的空气质量雪上加霜。
11月以来，印度首都新德里已有多日成为全球空气污染最严重的城市。
尽管如此，习惯户外活动的城市居民却忽略专家们给出的建议，执意坚持到城市公园等户外场所进行锻炼。
印度的空气污染到底有多严重？民众为何仍然出门运动？Toxic Air Is No Reason to Stay Inside for Delhi's Joggers and Yoga FansBy Sameer YasirA few steps into his early-morning run, Purushottam Sahu struggled to breathe. He started coughing. He felt as if he might vomit.Overhead, a thick brown-gray haze blanketed the sprawling forest park in New Delhi where he and other joggers, yoga enthusiasts and dog owners were keeping to their daily habits despite official warnings against exerting themselves in the toxic air.Every year in the late fall, as air pollution in the Indian capital climbs to noxious extremes, the government takes emergency measures like closing schools, restricting traffic and banning construction. But for the region's 30 million inhabitants, life must go on, and for many in this urban expanse of lush parks and morning strolls, that means trying to remain active.Concentrations of cancer-causing micro-particles that enter the bloodstream through the lungs have soared in recent days to 30 times the danger limit set by the World Health Organization.Public health experts say that strenuous exercise can mean deeper breathing and more particles inhaled into the lungs, making outdoor activity dangerous and sometimes even fatal, especially for older people and children. But hardly anyone listens, city park officials said.Mr. Sahu, who was taking his morning run at Sanjay Van, said he had moved to the city for a job 15 years ago and now worked as a software engineer. "Given a choice, I will pack my bags and leave this city without telling my friends," Mr. Sahu said. "We are stuck for giving good education to our children, without realizing we are also killing them with poisonous air."【词汇过关】请写出下面文单词在文章中的中文意思。
2023年高考英语外刊时文精读专题03看到空中的碳足迹(含答案)
高考英语外刊时文精读专题：2023年高考英语外刊时文精读精练 (3)Carbon emissions碳排放Seeing footprints in the air看到空中的碳足迹主题语境：人与自然主题语境内容：环境保护【外刊原文】（斜体单词为超纲词汇，认识即可；下划线单词为课标词汇，需熟记。
）Chris Jones of the University of California, Berkeley, was on a river in the Amazon rainforest when he put the finishing touches on the world’s first online household carbon calculator(计算器). That was in 2005. He hoped that, if he could show people how much greenhouse gas was associated with daily activities—driving the car, heating the house—they might change their behaviour and contribute in some small measure to saving the Amazon. Seventeen years later, trackers are providing a wealth of often-neglect ed information about the carbon emissions of everyday life. They provide local and micro data which usefully supplement the global findings of the Intergovernmental Panel on Climate Change.Trackers work by asking users to answer questions such as: how many miles a year do you drive; how much is your annual household electricity bill; how often do you eat meat? They then calculate a personal or household estimate of emissions of carbon-dioxide equivalent (CO2e，二氧化碳当量排放量) per year. Alex Beale, a climate blogger in Atlanta who has studied them, reckons there are dozens of household carbon trackers and hundreds of specialist ones, including those which calculate emissions from food or other industries, such as a new one from the Stockholm Environment Institute (SEI) to track emissions from shipping. For individuals, reckons Mr Beale, the most comprehensive are the Cool Climate tracker run by Dr Jones at Berkeley and the calculator set up by the World Wildlife Fund (WWF) and SEI. What do they tell us?Dr Jones describes the main household polluting activities as “cars, coal, cows and consumption,roughly in that order”. By far the largest single source of emissions is the family vehicle. One car of average fuel efficiency driven 14,000 miles (22,500km) spews out 7 tonnes of carbon, according to Dr Jones’s tracker. Swapping it for an electric vehicle would save over 6 tonnes,or an eighth of the average American household’s yearly emissions.No other change would generate that much saving, though electricity in the home is responsible for over 5 tonnes of carbon emissions a year, so generating it with solar panels（太阳能电池板） would come close . Like electric vehicles, a roof full of solar panels is not cheap. Changing diets costs less, and American households consume meat worth 2.7 tonnes of CO2e a year, far more than most people. If Americans went vegetarian（素食者）, that would be like half an average solar roof.These household averages, however,disguise what may be the most important thing carbon trackers reveal: that apparently similar households produce very different emissions. By combining their tracker’s res ults with postal（邮政的）code data, the University of California team worked out average emissions by area. Places with high emissions—mostly suburbs（郊区）—produce four or five times as much carbon as inner cities or rural areas, a much larger multiple than mig ht have been expected. Chicago’s households produce37 tonnes of CO2e a year; suburban Eola’s, some35 miles (56km) from the Windy City, emit96 tonnes. This is not only because of commuting（通勤）. Trips to and from work account for less than a fifth of miles driven; the rest are to shops, schools and so on.Even more striking is the difference air travel makes. The average household contribution from flying is 1.5 tonnes, less than a car. But half of Americans never fly. According to Cool Climate, flying 100,000 miles a yearproduces a stunning（惊人的）43 extra tonnes of CO2. If jet-set households were to cut their travel sharply, they would have a disproportionate（不成比例的）effect on emissions. They might even do something for the Amazon.Over the next 30 years, many countries are promising to move to net-zero carbon, imply ing that household emissions will have to be cut to close to nothing. Stephanie Roe, WWF’s lead climate scientist, reckons that, at best, half the reduction might be achieved through demand-side measures, such as behavioural changes by individuals and households. And even that would require companies and governments to provide more incentives（激励）to change through supply-side investments to make low-carbon options cheaper and more widely available.Trackers, it seems, have daunting（令人怯步的）lessons for public bodies and private households alike.【课标词汇】1.associate将…（与…）联系起来，把…联系在一起Most people associate this brand with good quality.大多数人把这个品牌和优良品质联系在一起。
2023年高考英语外刊时文精读专题14气候变化与珊瑚礁(含答案)
2023年高考英语外刊时文精读精练(14)Climate change and coral reefs气候变化与珊瑚礁主题语境：人与自然主题语境内容：自然生态【外刊原文】（斜体单词为超纲词汇，认识即可；下划线单词为课标词汇，需熟记。
）Human beings have been altering habitats—sometimes deliberately andsometimes accidentall y—at least since the end of the last Ice Age. Now, though, that change is happening on a grand scale. Global warming is a growing factor. Fortunately, the human wisdom that is destroying nature can also be brought to bear on trying to save it.Some interventions to save ecosystems are hard to imagine andsucceed. Consider a project to reintroducesomething similar to a mammoth(猛犸象)to Siberiaby gene-editing Asian elephants. Their feeding habits could restore the grassland habitat that was around before mammoths died out, increasing the sunlight reflected into space and helping keep carbon compounds(碳化合物)trapped in the soil. But other projects have a bigger chance of making an impact quickly. As we report, one example involves coral reefs.These are the rainforests of the ocean. They exist on vast scales: half a trillion corals line the Pacific from Indonesia to French Polynesia, roughly the same as the number of trees that fill the Amazon. They are equally important harbor of biodiversity. Rainforests cover18% of the land’s surface and offer a home to more than half its vertebrate(脊椎动物的)species. Reefs occupy0.1% of the oceans and host a quarter of marine(海洋的)species.And corals are useful to people, too. Without the protection which reefs afford from crashing waves, low-lying islands such as the Maldives would have flooded long ago, and a billion people would lose food or income. One team of economists has estimated that coral’s global ecosystem services are worth up to $10trn a year. reefs are, however, under threat from rising sea temperatures. Heat causesthe algae（海藻） with which corals co-exist, and on which they depend for food and colour, to generate toxins（毒素）that lead to those algae’s expulsion（排出）. This is known as “bleaching（白化）”, and can cause a coral’s death. As temperatures continue to rise, research groups around the world are coming up with plansof action. Their ideas include identifying naturally heat-resistant（耐热的）corals and moving themaround the world; crossbreeding（杂交）such corals to create strains that are yet-more heat-resistant; employing genetic editing to add heat resistance artificially; transplantingheat-resistant symbiotic（共生的）algae; and even repairing with the bacteria and other micro-organismswith which corals co-exist—to see if that will help.The assisted evolution of corals does not meet with universal enthusiasm. Without carbon reduction and decline in coral-killing pollution, even resistant corals will not survive the century. Some doubt whetherhumans will get its act together in time to make much difference. Few of these techniques are ready for action in the wild. Some, such as gene editing, are so controversial that it is doubtful they will be approved any time soon. scale is also an issue.But there are grounds for optimism. Carbon targets are being set and ocean pollution is being dealt with. Countries that share responsibilities for reefs are starting to act together. Scientific methods can also be found. Natural currents can be used to facilitate mass breeding. Sites of the greatest ecological and economical importance can be identified to maximise benefits.This mix of natural activity and human intervention could serve as a blueprint （蓝图）for other ecosystems. Those who think that all habitats should be kept original may not approve. But when entire ecosystems are facing destruction, the cost of doing nothing is too great to bear. For coral reefs, at least, if any are to survive at all, it will be those that humans have re-engineered to handle the future.【课标词汇精讲】1.alter （通常指轻微地）改动，修改；改变，（使）变化We've had to alter some of our plans.我们不得不对一些计划作出改动。
2025届高三英语培优外刊阅读学案环境话题
高三英语培优外刊阅读班级：____________学号：____________姓名：____________外刊精选｜给食品贴生态标签，谁在为环境买单？这两年，人们在环保方面可以说是屡出新招，比如，号称健康又低碳的“植物肉”，用着用着就烂了的纸吸管，点外卖要额外付费的一次性餐具，等等。
最近，英国一个探讨团队尝试为食品测算“环保值”，并力推食品生产商都为产品打上“生态标签”。
这项措施真的有利于环保吗？推广“生态标签”，原委是约束生产商，还是绑架消费者？Supermarket Food Could Soon Carry Eco-labels, Says Study Supermarket shoppers could soon be checking the environmental impact of food before putting it in their trolleys, thanks to new research. Reliable information of this kind hasn't been available. That's because UK manufacturers only have to list their main ingredients.Scientists have overcome the problem by estimating the composition of thousands of food products and their impact. Many consumers want to know how their weekly food shop affects the planet. The food industry has also been crying out for a new tool and this algorithm is already being used by some manufacturers.The team estimated the composition of 57,000 foods and drinks in supermarkets in the UK and Ireland. It then assessed the impact of growing methods, processing and transport, against key environmental measures including greenhouse gas emissions and impacts on nature.Under the algorithm, the higher the score, the higher the environmental impact. But there is wide variation within specific categories. For example, the highest-impact pork sausage scored about a third higher than the least impactful.The researchers don't foresee eco-labelling becoming compulsory in the near future. They want firms to adopt it voluntarily, something they believe would lead them to compete over the sustainability of their food and drink products.【词汇过关】请写出下面文单词在文章中的中文意思。
2023年高考英语外刊时文精读专题05气候变化零碳排放(含答案)
2023年高考英语外刊时文精读精练(5)Climate change气候变化Heat island热岛主题语境：人与自然主题语境内容：人与环境【外刊原文】（斜体单词为超纲词汇，认识即可；下划线单词为课标词汇，需熟记。
）On March 13th, as commuters（每日往返上班者）streamed out of Chhatrapati Shivaji Terminus,a gothic revival masterpiece（哥特式复兴建筑——贾特拉帕蒂·希瓦吉终点站）in Mumbai, India’s commercial capital, they were confronted with temperatures approaching40°C, nearly7°C above normal for the time of year. The city is in the midst of a debilitating heatwave, its 13th in the past five decades, nearly half of which occurred in the past 15 years. Mumbai’s average temperature has increased by over 1°C in that period.Had those commuters crossed the street from the station and entered the city’s grand headquarters that day, they might have found cause for optimism. That afternoon politicians from the authority and the state of Maharashtra, of which Mumbai is the capital, had gathered to unveil（揭露）a “climate action plan”. The city aims to reach net-zero emissions by 2050, two decades earlier than the target set by the national government.Mumbai is extremely vulnerable to climate change.A narrow and densely populated（人口密集的）island, surrounded on three sides by the Arabian Sea, it is attacked by monsoon(季候风) rains for four months a year and routinely subject to flooding, especially during high tide. That is bad enough for thecity’s apartment-dwellers（公寓居民）. But it is even worse for the 42% of the population who live in slums（贫民窟）, which are likely to be washed away or buried by landslides（山体滑坡）.The key of the plan is a proposal to decarbonise（去碳化）Mumbai’s energy. Generating the city’s electricity, which produces nearly two-thirds of the city’s emissions, relies mostly on burning fossil fuels, particularly coal. The city wants to increase the share of renewables （可再生资源）. It is looking, for instanceinto installing solar panels（装太阳能电池板）on rooftops.Another priority is to improve the quality and efficiency of the city’s buildings.Slums, especially, are heat islands. Made of whatever materials are at hand or cheaply available, they are five or six degrees hotter than structures of good quality, making them, as the report puts it, “uninhabitable(不适于居住的)” on hot days. Moreover, the heat, damp and cramped(狭窄的)conditions make slum residents more vulnerable to disease—a less obvious risk of climate change.The plan is, however, short on details of how to achieve its ambition s. Still, in publishing one at all Mumbai has led the way among South Asian metropolises(大都市). Other cities are keen to follow suit, says Shruti Narayan of C40, who helped with the report. Chennai and Bangalore in the south have started work on their plans. Others, including Delhi and Kolkata in India, Dhaka in Bangladesh and Karachi in Pakistan have expressed interest in doing something similar.There is plenty in Mumbai’s240-page document to inspire them. One is the fact that it does not rely on using technologies that do not yet exist, a criticism at many countries’ national proposals. Another is the attention given to adaptation(coping with all the bad things already happening) and not just reducing future emissions.Details may anyway be beside the point. The real value of Mumbai’s plan is as a signalling device(信号装置)that “focuses the attention of policymakers”, states Abhas Jha, a climate specialist at the World Bank. The Paris Agreement, which committed the world to the goal of keeping the rise in temperatures to less than 2°C above pre-industrial levels, worked in much the same way, leaving countries to hash out details later. Time, though, is getting ever shorter.【课标词汇】1.stream（一群人，东西）涌，涌动；流动He was watching the taxis streaming past.他看着出租车一辆接着一辆地驶过。
2023届高三英语培优外刊阅读学案看病难话题(含答案)
高三英语培优外刊阅读学案：高三英语培优外刊阅读班级：____________学号：____________姓名：____________外刊精选｜亚马逊砸了39亿，能解决美国人看病难吗？最近，互联网巨头亚马逊宣布，计划以39亿美元收购一家线上医疗服务商One Medical，这也成为其史上最大的医疗收购案。
其实，欧美很多国家“看病贵”“预约难”的问题由来已久，互联网巨头也因此纷纷看好医疗行业的发展前景。
亚马逊为什么要进军医疗领域？又为何选择收购One Medical？Amazon to acquire One Medical clinics in latest push into health care.By Karen WeiseOn Thursday, Amazon announced its first major acquisition under Andy Jassy's tenure as C.E.O., spending $3.9 billion for One Medical, a chain of primary care clinics around the country.The deal is a sign of Amazon's long-simmering health care ambitions. As the company has marched from one retail business to another — including books, CDs, electronics, dog food, diapers and clothes — it has had to look in less obvious spots to find opportunities that can provide meaningful expansion.Health care has been tantalizing to Amazon executives who believe it is an immense market, rife with inefficiencies and generally lacking the kind of customer-focused approach that Amazon tries to take with its businesses.Amazon wants to be the "front door" through which customers access health care, said Christina Farr, an investor in health care with OMERS Ventures. "They want to nail the consumer experience."Based in San Francisco, One Medical operates a network of 188 medical offices, primarily in large cities, and provides virtual medical services that patients access with a $199 annual membership.That One Medical sees about five times as many virtual visits as in-person appointments most likely made it attractive to Amazon, according to analysts at the investment bank Cowen. The company also has something Amazon values deeply: data. One Medical built its own electronic medical records system, and it has 15 years' worth of medical and health-system data Amazon could tap.【词汇过关】请写出下面文单词在文章中的中文意思。
高三英语科普环保类阅读试题答案及解析
高三英语科普环保类阅读试题答案及解析1. Everyone has those nights-you lie in your bed for hours, tossing and turning, totally unable to fall asleep. You wish you could just turn your brain off as if it were a light. That would make things much easier, wouldn’t it?Now it looks like you are one step closer to this wild dream of yours-scientists from Oxford University, UK have just discovered the “switch” that tells the brain to go to sleep, reported Forbes.To understand the study, you first need to know that there are two mechanisms(机能) that regulate sleep. There’s one that we’re already familiar with —our body clock, which works in a 24-hour cycle based on the light changes throughout the day.The other one is what scientists call the sleep “homeostat(动态平衡系统)”. This mechanism has nothing to do with daylight. Instead, it keeps track of the brain’s waking hours and urges it torest if it has been awake for a long time. “It is similar to the thermostat(自动调温器) in your home.A thermostat measures temperature and switches on the heating if it’s too cold,” Professor Gero Miesenbock, who led the study, told The Telegraph.Our bodies use both of the mechanisms to regulate sleep. “The body clock says it’s the right time, and the sleep thermostat has built up pressure during a l ong waking day,” explained Miesenbock.There is no way that scientists can trick the body clock. But with the sleep homeostat, there might be something they can do.The researchers found that the sleep homeostat works by activating a specific group of nerve cells, or neurons, in the brain. They tested their theory on fruit flies by removing the neurons from the insects’ brains. And as expected, they found that the flies without the homeostat neurons did not keep a regular sleep pattern anymore.Now that scientists have pinpointed the exact place in the brain—or, the “switch”—that regulates sleep, they can begin investigating how to activate these cells at any given time so that people can be sent to sleep instantly.More importantly, figuring out how sleep mechanisms work may also help us to one day unravel one of the oldest mysteries of all: why do we need to sleep in the first place?【1】What is the article mainly about?A．A new way to treat sleep disorders.B．The discovery of the sleep “homeostat”C．Advice on what to do when you fail to fall asleep.D．A comparison of the two mechanisms that regulate sleep.【答案】B【解析】主旨题：根据第四段的句子：The other one is what scientists call the sleep “homeostat (动态平衡系统)”. This mechanism has nothing to do with daylight. Inste ad, it keeps track of the brain’s waking hours and urges it to rest if it has been awake for a long time.可知这篇文章讲的是睡眠动态平衡系统的发现，选B。
高三英语培优外刊阅读学案：环境话题
高三英语培优外刊阅读班级：____________学号：____________姓名：____________外刊精选｜2050年，海平面上升将危及更多大城市一直以来，海平面上升已是不争的事实。
然而最新研究发现，此前的数据大幅低估了这一变化带来的影响。
在新模型预测下，到2050年，胡志明市、曼谷和孟买等许多沿海城市或将不复存在，数亿人口将被迫迁徙，由此引发的危机甚至可能让冲突频发的伊拉克地区更加动荡。
海平面上升还可能带来哪些隐患？这项最新研究在技术上有何突破？Rising Seas Will Erase More Cities by 2050, New Research Shows Rising seas could affect three times more people by 2050 than previously thought, according to new research, threatening to all but erase some of the world’s great coastal cities.The authors of a paper published Tuesday developed a more accurate way of calculating land elevation based on satellite readings, and found that the previous numbers were far too optimistic. The new research shows that some 150 million people are now living on land that will be below the high-tide line by midcentury.In Thailand, more than 10 percent of citizens now live on land that is likely to be inundated by 2050, compared with just 1 percent according to the earlier technique. The political and commercial capital, Bangkok, is particularly imperiled.In other places, the migration caused by rising seas could trigger or exacerbate regional conflicts.Basra, the second-largest city in Iraq, could be mostly underwater by 2050. If that happens, the effects could be felt well beyond Iraq’s borders, according to John Castellaw, a retired Marine Corps lieutenant general.Further loss of land to rising waters there “threatens to drive further social and political instability in the region, which could reignite armed conflict and increase the likelihood of terrorism,” said General Castellaw, who is now on the advisory board of the Center for Climate and Security, a research and advocacy group in Washington.“So this is far more than an environmental problem,” he said. “It’s a humanitarian, security and possibly military problem too.”【词汇过关】请写出下面文单词在文章中的中文意思。
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高三英语培优外刊阅读学案：高三英语培优外刊阅读班级：____________学号：____________姓名：____________外刊精选｜给食品贴生态标签，谁在为环境买单？这两年，人们在环保方面可以说是屡出新招，比如，号称健康又低碳的“植物肉”，用着用着就烂了的纸吸管，点外卖要额外付费的一次性餐具，等等。
最近，英国一个研究团队尝试为食品测算“环保值”，并力推食品生产商都为产品打上“生态标签”。
这项措施真的有利于环保吗？推广“生态标签”，究竟是约束生产商，还是绑架消费者？Supermarket Food Could Soon Carry Eco-labels, Says Study Supermarket shoppers could soon be checking the environmental impact of food before putting it in their trolleys, thanks to new research. Reliable information of this kind hasn't been available. That's because UK manufacturers only have to list their main ingredients.Scientists have overcome the problem by estimating the composition of thousands of food products and their impact. Many consumers want to know how their weekly food shop affects the planet. The food industry has also been crying out for a new tool and this algorithm is already being used by some manufacturers.The team estimated the composition of 57,000 foods and drinks in supermarkets in the UK and Ireland. It then assessed the impact of growing methods, processing and transport, against key environmental measures including greenhouse gas emissions and impacts on nature.Under the algorithm, the higher the score, the higher the environmental impact. But there is wide variation within specific categories. For example, the highest-impact pork sausage scored about a third higher than the least impactful.The researchers don't foresee eco-labelling becoming compulsory in the near future. They want firms to adopt it voluntarily, something they believe would lead them to compete over the sustainability of their food and drink products.【词汇过关】请写出下面文单词在文章中的中文意思。
1.reliable [rɪˈlaɪəbl] adj. _________________________________2.shop [ʃɒp] n._________________________________3.key [kiː] adj._________________________________4.foresee [fɔːˈsiː] v. _________________________________5.firm [fɜːm] n. _________________________________6.adopt [əˈdɒpt] v. _________________________________7.voluntarily [ˌvɒlənˈteərəli ˈvɒləntrəli] adv. _________________________________ 【词块学习】请从文章中找到下面中文相对应的文词块。
1.通过做某事来克服问题_________________________________2.迫切需要_________________________________3.广泛变化_________________________________拓展练习阅读理解vIn my town people like to give smile cards to those who have received help. And the receivers continue to help others. With those cards, people enjoy helping and being helped.I got some smile cards and used three of them just yesterday!I used the first smile card when I was getting my dogs some food in a pet store.A man walked up to look at collars (项圈), looking puzzled. He asked me if I knew anything about dogs and collars, which actually I was quite familiar with. I helped him choose one. I hope it would work for his dog. When he said thanks, I handed him a smile card. He smiled and said he would help someone as soon as possible.That was amazing! Then in a supermarket, when I was paying the bill, a grandma was trying to get her granddaughter out of a basket. I offered to help her, and she said “Yes, please.” Later she told me t hat she had just had an operation and couldn’t lift things very well. After getting the baby girl out, I handed her my second smile card.Then I paid for someone’s food in a small restaurant and left behind the third smile card.I felt very happy yesterday. It was great to help others and leave behind smile cards. I believe that more and more people will get happiness from receiving and giving smile cards.5.Who will get smile cards?A.People who have received helpB.Any storesC.People who have offered helpD.Any friends6.From paragraph 3 we learn the author was quite familiar with_________.A.dog foodB.dogs and collarsC.cardsD.giving smile cards7.The grandma could not lift her granddaughter well after________.A.hard workB.much talkC.an operationD.a long walk8.From the passage what do we know about people in the author’s town?A.People only like to receive help.B.People like to give things to others.C.People love to go around the town.D.People live a happy life.外刊精选答案【词汇过关】请写出下面文单词在文章中的中文意思。
1.reliable [rɪˈlaɪəbl] adj. 可信赖的2.shop [ʃɒp] n.去商店买;在商店购物3.key [kiː] adj.关键的;最重要的4.foresee [fɔːˈsiː] v. 预料;预见;预知5.firm [fɜːm] n. 公司6.adopt [əˈdɒpt] v. 采用7.voluntarily [ˌvɒlənˈteərəli ˈvɒləntrəli] adv. 自愿地【词块学习】请从文章中找到下面中文相对应的文词块。
1.overcome the problem by doing something通过做某事来克服问题2.cry out for迫切需要3.wide variation广泛变化【全文翻译】研究表明，超市食品很快就会贴上生态标签不久之后，超市购物者就能先检查某样食品会对环境带来怎样的影响，再决定要不要把它放进购物车里，这都得益于一项新研究。