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《英语流行话题阅读:语境识词4500》75 The Concerns about Genetically Modified Food

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  Unit 75
The Concerns about Genetically3 Modified Food
Genetic2 Modification4 (GM) has the power to save lives through its use in medicine, such as the production of insulin for diabetics or the treatment of genetic disorders5. The current outcry comes when it is used to produce food. Some of these public concerns reflect real problems, but others are fuelled by misinformation and over-dramatization.
There is nothing new about crop modification; plant breeders have been doing this since agriculture began. The wonderful range of apples or potatoes we now enjoy is the result of crossing different varieties. Cabbages, Brussels sprouts6, cauliflower, kohlrabi and broccoli7 all originated from one botanical species.
Modern molecule8 biology has enabled us to go much further. We can now isolate9 the gene1 from a particular characteristic of an organism and transfer it to another species. It is this practice of transforming a plant with alien genes10 -- perhaps from an animal or bacterium11 --that is causing all the controversy12.
There are four main concerns.
Scientists can now take a gene for resistance to particular herbicide and transplant it to a crop: when these plants are sprayed with weedkiller, the weeds were destroyed while the crop is unharmed. A prime concern is the harmful effect this could have on the biodiversity of farmland, where so many insects, birds and other animals depend on "weed" species.
Another fear is that alien genes from a GM plant could escape into a wild population of a related species. Since plants are fertilized13 by pollen14 carried through air, often for long distances, this is entirely15 possible. A wild species modified in this way with pesticide16 resistance could become a superweed, while a species that became unnaturally17 resistant18 to animals could disrupt the food chain.
The third worry concerns a proposal to produce seeds for cereals that cannot produce next year's seeds. This "terminator technology" would benefit seed companies, since farms would be forced to buy new seeds annually19. But the same technology could be devastating20 to some farmers in the developing countries who depend on saving seeds for next year's crop. Fortunately this technology is not yet in use and there has been strong pressure to abandon it.
It is unlikely that the current modifications21 are harmful to health. However the introduction of animal genes into plants presents considerable ethical22 difficulties to vegetarians23 and members of religions that forbid the eating of certain animals. This is why people are demanding all GM food products be labeled. The public has a right to know what they are eating -- and a right to choose. In America GM is well regulated, but this cannot be said for some other nations. One problem is that this technology is commercially motivated. Because companies developing GM food want to introduce it as quickly as possible, it is being rushed without adequate research or precautions.
GM is here to stay, and there is no doubt it will save lives. But like so many other scientific discoveries -- such as splitting the atom -- it can be seriously misused24. Instead of condemning25 the techniques, we should ensure it is used wisely. We need to evaluate each application carefully, from environmental and ethical standpoints, and we must urge governments and companies to use GM for good rather than for greed.


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1 gene WgKxx     
n.遗传因子,基因
参考例句:
  • A single gene may have many effects.单一基因可能具有很多种效应。
  • The targeting of gene therapy has been paid close attention.其中基因治疗的靶向性是值得密切关注的问题之一。
2 genetic PgIxp     
adj.遗传的,遗传学的
参考例句:
  • It's very difficult to treat genetic diseases.遗传性疾病治疗起来很困难。
  • Each daughter cell can receive a full complement of the genetic information.每个子细胞可以收到遗传信息的一个完全补偿物。
3 genetically Lgixo     
adv.遗传上
参考例句:
  • All the bees in the colony are genetically related. 同一群体的蜜蜂都有亲缘关系。
  • Genetically modified foods have already arrived on American dinner tables. 经基因改造加工过的食物已端上了美国人的餐桌。 来自英汉非文学 - 生命科学 - 基因与食物
4 modification tEZxm     
n.修改,改进,缓和,减轻
参考例句:
  • The law,in its present form,is unjust;it needs modification.现行的法律是不公正的,它需要修改。
  • The design requires considerable modification.这个设计需要作大的修改。
5 disorders 6e49dcafe3638183c823d3aa5b12b010     
n.混乱( disorder的名词复数 );凌乱;骚乱;(身心、机能)失调
参考例句:
  • Reports of anorexia and other eating disorders are on the increase. 据报告,厌食症和其他饮食方面的功能紊乱发生率正在不断增长。 来自《简明英汉词典》
  • The announcement led to violent civil disorders. 这项宣布引起剧烈的骚乱。 来自《简明英汉词典》
6 sprouts 7250d0f3accee8359a172a38c37bd325     
n.新芽,嫩枝( sprout的名词复数 )v.发芽( sprout的第三人称单数 );抽芽;出现;(使)涌现出
参考例句:
  • The wheat sprouts grew perceptibly after the rain. 下了一场雨,麦苗立刻见长。 来自《现代汉英综合大词典》
  • The sprouts have pushed up the earth. 嫩芽把土顶起来了。 来自《现代汉英综合大词典》
7 broccoli 1sbzm     
n.绿菜花,花椰菜
参考例句:
  • She grew all the broccoli plants from seed.这些花椰菜都是她用种子培育出来的。
  • They think broccoli is only green and cauliflower is only white.他们认为西兰花只有绿色的,而菜花都是白色的。
8 molecule Y6Tzn     
n.分子,克分子
参考例句:
  • A molecule of water is made up of two atoms of hygrogen and one atom of oxygen.一个水分子是由P妈̬f婘̬ 妈̬成的。
  • This gives us the structural formula of the molecule.这种方式给出了分子的结构式。
9 isolate G3Exu     
vt.使孤立,隔离
参考例句:
  • Do not isolate yourself from others.不要把自己孤立起来。
  • We should never isolate ourselves from the masses.我们永远不能脱离群众。
10 genes 01914f8eac35d7e14afa065217edd8c0     
n.基因( gene的名词复数 )
参考例句:
  • You have good genes from your parents, so you should live a long time. 你从父母那儿获得优良的基因,所以能够活得很长。 来自《简明英汉词典》
  • Differences will help to reveal the functions of the genes. 它们间的差异将会帮助我们揭开基因多种功能。 来自英汉非文学 - 生命科学 - 生物技术的世纪
11 bacterium BN7zE     
n.(pl.)bacteria 细菌
参考例句:
  • The bacterium possibly goes in the human body by the mouth.细菌可能通过口进入人体。
  • A bacterium is identified as the cause for his duodenal ulcer.一种细菌被断定为造成他十二指肠溃疡的根源。
12 controversy 6Z9y0     
n.争论,辩论,争吵
参考例句:
  • That is a fact beyond controversy.那是一个无可争论的事实。
  • We ran the risk of becoming the butt of every controversy.我们要冒使自己在所有的纷争中都成为众矢之的的风险。
13 Fertilized 0f66e269f3e72fa001554304e59712da     
v.施肥( fertilize的过去式和过去分词 )
参考例句:
  • The study of psychology has recently been widely cross-fertilized by new discoveries in genetics. 心理学研究最近从遗传学的新发现中受益匪浅。
  • Flowers are often fertilized by bees as they gather nectar. 花常在蜜蜂采蜜时受粉。
14 pollen h1Uzz     
n.[植]花粉
参考例句:
  • Hummingbirds have discovered that nectar and pollen are very nutritious.蜂鸟发现花蜜和花粉是很有营养的。
  • He developed an allergy to pollen.他对花粉过敏。
15 entirely entirely     
ad.全部地,完整地;完全地,彻底地
参考例句:
  • The fire was entirely caused by their neglect of duty. 那场火灾完全是由于他们失职而引起的。
  • His life was entirely given up to the educational work. 他的一生统统献给了教育工作。
16 pesticide OMlxV     
n.杀虫剂,农药
参考例句:
  • The pesticide was spread over the vegetable plot.菜田里撒上了农药。
  • This pesticide is diluted with water and applied directly to the fields.这种杀虫剂用水稀释后直接施用在田里。
17 unnaturally 3ftzAP     
adv.违反习俗地;不自然地;勉强地;不近人情地
参考例句:
  • Her voice sounded unnaturally loud. 她的嗓音很响亮,但是有点反常。 来自《简明英汉词典》
  • Her eyes were unnaturally bright. 她的眼睛亮得不自然。 来自《简明英汉词典》
18 resistant 7Wvxh     
adj.(to)抵抗的,有抵抗力的
参考例句:
  • Many pests are resistant to the insecticide.许多害虫对这种杀虫剂有抵抗力。
  • They imposed their government by force on the resistant population.他们以武力把自己的统治强加在持反抗态度的人民头上。
19 annually VzYzNO     
adv.一年一次,每年
参考例句:
  • Many migratory birds visit this lake annually.许多候鸟每年到这个湖上作短期逗留。
  • They celebrate their wedding anniversary annually.他们每年庆祝一番结婚纪念日。
20 devastating muOzlG     
adj.毁灭性的,令人震惊的,强有力的
参考例句:
  • It is the most devastating storm in 20 years.这是20年来破坏性最大的风暴。
  • Affairs do have a devastating effect on marriages.婚外情确实会对婚姻造成毁灭性的影响。
21 modifications aab0760046b3cea52940f1668245e65d     
n.缓和( modification的名词复数 );限制;更改;改变
参考例句:
  • The engine was pulled apart for modifications and then reassembled. 发动机被拆开改型,然后再组装起来。 来自《简明英汉词典》
  • The original plan had undergone fairly extensive modifications. 原计划已经作了相当大的修改。 来自《简明英汉词典》
22 ethical diIz4     
adj.伦理的,道德的,合乎道德的
参考例句:
  • It is necessary to get the youth to have a high ethical concept.必须使青年具有高度的道德观念。
  • It was a debate which aroused fervent ethical arguments.那是一场引发强烈的伦理道德争论的辩论。
23 vegetarians 92ca2254bb61eaa208608083177e4ed9     
n.吃素的人( vegetarian的名词复数 );素食者;素食主义者;食草动物
参考例句:
  • Vegetarians are no longer dismissed as cranks. 素食者不再被视为有怪癖的人。
  • Vegetarians believe that eating meat is bad karma. 素食者认为吃肉食是造恶业。
24 misused 8eaf65262a752e371adfb992201c1caf     
v.使用…不当( misuse的过去式和过去分词 );把…派作不正当的用途;虐待;滥用
参考例句:
  • He misused his dog shamefully. 他可耻地虐待自己的狗。 来自《简明英汉词典》
  • He had grossly misused his power. 他严重滥用职权。 来自《简明英汉词典》
25 condemning 3c571b073a8d53beeff1e31a57d104c0     
v.(通常因道义上的原因而)谴责( condemn的现在分词 );宣判;宣布…不能使用;迫使…陷于不幸的境地
参考例句:
  • The government issued a statement condemning the killings. 政府发表声明谴责这些凶杀事件。
  • I concur with the speaker in condemning what has been done. 我同意发言者对所做的事加以谴责。 来自《现代英汉综合大词典》
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