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Homegrown Isn’t Always Best The term "food miles" how far foot has traveled before you buy it—has entered the enlightened le
Homegrown Isn’t Always Best The term "food miles" how far foot has traveled before you buy it—has entered the enlightened le
admin
2013-07-11
77
问题
Homegrown Isn’t Always Best
The term "food miles" how far foot has traveled before you buy it—has entered the enlightened lexicon. Environmental groups, especially in Europe, are pushing for labels that show how far food has traveled to get to the market, and books like Barbara King-solver’s Animal, Vegetable, Miracle: A Year of Food Life contemplate the damage wrought by trucking, shipping and flying food from distant parts of the globe.
There are many good reasons for eating local—freshness, purity, taste, community cohesion and preserving open space—but none of these benefits compares with the much-touted claim that eating local reduces fossil fuel consumption. On its face, the connection between lowering food miles and decreasing greenhouse gas emissions is a no-brainer. Seventy-five percent of the apples sold in New York City come from the West Coast or overseas, the writer Bill McKibben says, even though the state produces far more apples than city residents consume. In light of this market redundancy, the only reasonable reaction, it seems, is to count food miles the way a dieter counts calories.
But is reducing food miles necessarily good for the environment?
Researchers at Lincoln University in New Zealand recently published a study challenging the premise that more food miles automatically mean greater fossil fuel consumption. According to this peer reviewed research, compelling evidence suggests that there is more or less to food miles than meets the eye. It all depends on how you wield the carbon calculator. Instead of measuring a product’s carbon footprint through food miles alone, the Lincoln University scientists expanded their equations to include other en ergy-consuming aspects of production like water use, harvesting techniques, fertilizer outlays, disposal of packaging, storage procedures and dozens of other cultivation inputs.
Incorporating these measurements into their assessments, scientists reached surprising conclusions. Most notably, they found that lamb raised on New Zealand’s clove-choked pastures and shipped 11,000 miles by boat to Britain produced 1,520 pounds of carbon dioxide emissions per ton while British lamb produced 6, 280 pounds of carbon dioxide per ton, in part because poorer British pastures force farmers to use feed. These life-cycle measurements are causing environmentalists worldwide to rethink the logic of food miles. New Zealand’s most prominent environmental research organization, Landcare Research-Manaaki Whenua, explains that localism " is not always the most environmentally sound solution if more emissions are generated at other stages of the product life cycle than during transport."
" Eat local" advocates—a passionate group of which I am one—are bound to interpret these findings as a threat. We shouldn’t. Not only do life cycle analyses offer genuine opportunities for environmentally efficient food production, but they also address several problems inherent in the eat-local philosophy.
The word "no-brainer" (Line 8, Para. 2) probably means something______.
选项
A、that is hard to imagine
B、that lacks intelligence or good sense
C、that is characterized by originality
D、that requires little thought
答案
D
解析
本题考查根据上下文推测词义。no-brainer出现在第二段第二句。该句指出,表面上看,减少食物里程与减少温室气体排放之间的联系是……。接着下文以纽约市苹果的销售为例说明食物的长途运输造成本地市场过剩。第三段以but为标志笔锋一转,提出质疑:减少食物里程真的有利于环境吗?从句子之间的衔接来看,but之前即第二段主要论述了减少食物里程(或吃本地食物)的好处。词语所在句子的含义是:减少食物里程对环境的好处是不言而喻的。下文所举的食物长途运输的例子也是为了说明这一点。这样与下文的but问句也很好地衔接起来。因此[D]正确。
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