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"养育世界",为什么我们需要大米

时间:2013-06-19 08:32来源:互联网 提供网友:mapleleaf   字体: [ ]
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   Rice is low-fat and high in energy, and you can mix it with just about anything to make a wide variety of tasty nutritious1 dishes. Ask anyone from any country in the world to tell you their favourite rice recipe and you will get a wide selection, ranging from sushi in Japan to risottos in northern Italy.

  Rice is closely connected to the culture of many societies. Hindu and Buddhist2 religions use rice as a religious offering. Burmese folklore3 uses rice as a central part of their creation story; the gods gave the first people of Burma rice seeds and directed them to Burma, where the rice would grow well. A Chinese proverb says that ‘precious things are not pearls and jade4 but the five grains, of which rice is the finest.’ Chinese myth tells how, after severe floods, there was nothing to eat and the people were starving. One day they saw a dog coming across the fields, and hanging onto the dog’s tail were bunches of long yellow seeds. The seeds grew into rice and the people survived.
  The origins of rice are uncertain, because rice has been grown for so many thousands of years. In several Asian languages, the words for food and rice, or for rice and agriculture, are the same, one of the facts that points to Asia as the origin of rice. It is certain, however, that rice cultivation5 is one of the most important developments in history, for rice has fed more people over a longer period of time than any other crop.
  The demand for rice is growing steadily6, with consumption stretching beyond the traditional rice growing areas in Asia. You can find rice fields in Europe, Latin America and Australia. However, Asia is still the biggest rice producer, accounting7 for 90% of the world’s production and consumption of rice.
  Rice is a staple8 food for many countries. In parts of Africa and Asia, many poorer urban families get over half their daily calories from rice. As the world population increases, can rice keep up? To meet growing demands, rice production has to be raised by at least 70% over the next three decades. The area devoted9 to rice cultivation cannot grow, so much international research is being done to find ways of growing rice on less land.
  Rice needs a good water supply to grow. Water is wasted daily all over the world and estimates suggest that most Asian countries will have severe water problems by 2025. It takes 5000 litres of water to grow a kilo of rice, yet many rice growing areas in Asia and Africa are drought-prone. Scientists need to develop varieties of rice that can withstand sudden heavy rains and compete with weeds.
  Worryingly, rice production is affected10 by global climate changes. Global warming is caused by toxic11 gas emissions12 in developed countries. The rise in global temperature cuts rice-growing time, and ultra violet light radiation from the sun reduces tolerance13 to disease. Methane14 gas, one of the culprits of global warming, is, ironically, a by-product15 of wet lowland rice cultivation. Methane-producing bacteria thrive in wet rice fields and the plants themselves send the gas into the atmosphere. Water management could reduce methane emissions, but practical methods that do not reduce rice yields still have to be found.

点击收听单词发音收听单词发音  

1 nutritious xHzxO     
adj.有营养的,营养价值高的
参考例句:
  • Fresh vegetables are very nutritious.新鲜蔬菜富于营养。
  • 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。
2 Buddhist USLy6     
adj./n.佛教的,佛教徒
参考例句:
  • The old lady fell down in adoration before Buddhist images.那老太太在佛像面前顶礼膜拜。
  • In the eye of the Buddhist,every worldly affair is vain.在佛教徒的眼里,人世上一切事情都是空的。
3 folklore G6myz     
n.民间信仰,民间传说,民俗
参考例句:
  • Zhuge Liang is a synonym for wisdom in folklore.诸葛亮在民间传说中成了智慧的代名词。
  • In Chinese folklore the bat is an emblem of good fortune.在中国的民间传说中蝙蝠是好运的象征。
4 jade i3Pxo     
n.玉石;碧玉;翡翠
参考例句:
  • The statue was carved out of jade.这座塑像是玉雕的。
  • He presented us with a couple of jade lions.他送给我们一对玉狮子。
5 cultivation cnfzl     
n.耕作,培养,栽培(法),养成
参考例句:
  • The cultivation in good taste is our main objective.培养高雅情趣是我们的主要目标。
  • The land is not fertile enough to repay cultivation.这块土地不够肥沃,不值得耕种。
6 steadily Qukw6     
adv.稳定地;不变地;持续地
参考例句:
  • The scope of man's use of natural resources will steadily grow.人类利用自然资源的广度将日益扩大。
  • Our educational reform was steadily led onto the correct path.我们的教学改革慢慢上轨道了。
7 accounting nzSzsY     
n.会计,会计学,借贷对照表
参考例句:
  • A job fell vacant in the accounting department.财会部出现了一个空缺。
  • There's an accounting error in this entry.这笔账目里有差错。
8 staple fGkze     
n.主要产物,常用品,主要要素,原料,订书钉,钩环;adj.主要的,重要的;vt.分类
参考例句:
  • Tea is the staple crop here.本地产品以茶叶为大宗。
  • Potatoes are the staple of their diet.土豆是他们的主要食品。
9 devoted xu9zka     
adj.忠诚的,忠实的,热心的,献身于...的
参考例句:
  • He devoted his life to the educational cause of the motherland.他为祖国的教育事业贡献了一生。
  • We devoted a lengthy and full discussion to this topic.我们对这个题目进行了长时间的充分讨论。
10 affected TzUzg0     
adj.不自然的,假装的
参考例句:
  • She showed an affected interest in our subject.她假装对我们的课题感到兴趣。
  • His manners are affected.他的态度不自然。
11 toxic inSwc     
adj.有毒的,因中毒引起的
参考例句:
  • The factory had accidentally released a quantity of toxic waste into the sea.这家工厂意外泄漏大量有毒废物到海中。
  • There is a risk that toxic chemicals might be blasted into the atmosphere.爆炸后有毒化学物质可能会进入大气层。
12 emissions 1a87f8769eb755734e056efecb5e2da9     
排放物( emission的名词复数 ); 散发物(尤指气体)
参考例句:
  • Most scientists accept that climate change is linked to carbon emissions. 大多数科学家都相信气候变化与排放的含碳气体有关。
  • Dangerous emissions radiate from plutonium. 危险的辐射物从钚放散出来。
13 tolerance Lnswz     
n.宽容;容忍,忍受;耐药力;公差
参考例句:
  • Tolerance is one of his strengths.宽容是他的一个优点。
  • Human beings have limited tolerance of noise.人类对噪音的忍耐力有限。
14 methane t1Eyx     
n.甲烷,沼气
参考例句:
  • The blast was caused by pockets of methane gas that ignited.爆炸是由数袋甲烷气体着火引起的。
  • Methane may have extraterrestrial significance.甲烷具有星际意义。
15 by-product nSayP     
n.副产品,附带产生的结果
参考例句:
  • Freedom is the by-product of economic surplus.自由是经济盈余的副产品。
  • The raw material for the tyre is a by-product of petrol refining.制造轮胎的原材料是提炼汽油时产生的一种副产品。
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