首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
If you want to spark a heated debate at a dinner party, bring up the topic of genetically modified foods. For many people, the c
If you want to spark a heated debate at a dinner party, bring up the topic of genetically modified foods. For many people, the c
admin
2011-01-04
56
问题
If you want to spark a heated debate at a dinner party, bring up the topic of genetically modified foods. For many people, the concept of genetically altered, high-tech crop production raises all kinds of environmental, healthy, safety and ethical questions. Particularly in countries with long a grain traditions—and vocal green lobbies—the idea seems against nature.
In fact, genetically modified foods are already very much apart of out lives. A third of corn and more than half the soybeans and cotton grown in the U. S. last year were the product of biotechnology, according to the Department of Agriculture. More than 65 million a-cres of genetically modified crops will be planted in the U. S. this year. The genetic genie(妖怪) is out of the bottle.
Yet there are clearly some very real issues that need to be resolved. Like any new prod-uct entering the food chain, genetically modified foods must be subjected to rigorous testing. In wealthy countries, the debate about biotech is tempered by the fact that we have a rich array of foods to choose from and a supply that far exceeds our needs. In developing countries desperate to feed fast-growing and underfed populations, the issue is simpler and much more urgent: Do the benefits of biotech outweigh the risks?
The statistics on population growth and hunger are disturbing. Last year the world’s population reached 6 billion. The U. N. estimates that nearly 800 million people around the world are undernourished. The effects are devastating. About 400 million women of child-bearing age are iron deficient, which means their babies are exposed to various birth defects. As many as 100 million children suffer from vitamin A deficiency, a leading cause of blindness.
How can biotech help? Biotechnologists have developed genetically modified rice that is fortified with beta-carotene—which the body converts into vitamin A—and additional iron, and they are working on other kinds of nutritionally improved crops. Biotech can also improve farming productivity in places where food shortages are caused by crop damage attributable to pests, drought, poor soil and crop viruses, bacteria or fungi.
The sentence "The genetic genie is out of the bottle. " in Para. 2 probably means
选项
A、the genetic genie, the key technology in producing genetically modified foods, is out in the market
B、the genetic technology has come out of laboratories into markets
C、genetically modified foods are available everywhere
D、technology with which to produce genetically modified foods may have powers unpredictable or uncontrollable by man
答案
D
解析
这句话借助于童话《渔夫与妖怪》的故事,经分析可知这句话说的是转基因技术的负面作用。文章第一段明确指出转基因食品的潜在问题,接着第二段说明转基因食品已成为我们生活的一部分,并介绍了转基因农作物在美国生产的现状,第三段首句又提到“仍有一些问题需要解决”。因此本题的正确答案为D。
转载请注明原文地址:https://kaotiyun.com/show/f0HO777K
0
在职攻硕英语联考
相关试题推荐
(厦门大学2014年试题)Mostpeoplewhotravellongdistancescomplainofjetlag(喷气飞行时差反应).Jetlagmakesbusinesstravelerslessprodu
Childrenareoften______sportsatanearlyage.Astheygetolderandstartschooltheyparticipateinsportsasawaybothto
(浙江大学2009年试题)Teachersneedtobeawareoftheemotional,intellectual,andphysicalchangesthatyoungadultsexperience,a
(浙江大学2009年试题)Teachersneedtobeawareoftheemotional,intellectual,andphysicalchangesthatyoungadultsexperience,a
By1817theUnitedStatesCongresshad______allinternaltaxesandwasrelyingontariffsonimportedgoodstoprovidesufficien
Despitethefactthattheywere______whentheymarried,after30yearstheylivetogetherharmoniously.
Thewaythatpeoplespendtheirmoney,andtheobjectsonwhichtheyspendit,arethelastareaswherefreechoiceandindividu
Thedifferencebetweenaliquidandagasisobvious【C1】______theconditionsoftemperatureandpressurecommonlyfoundatthes
Ifitwereonlynecessarytodecidewhethertoteachelementarysciencetoeveryoneonamassbasisortofindthegiftedfewan
Forthispart,youareallowed45minutestowriteacompositionentitledOnFabricatingAcademicCredentials.Youshouldwrite
随机试题
肝中与胆红素结合的最主要基团是
女,25岁,孕15周,血压150/90mmHg,尿蛋白(+++)伴颗粒管型,全身水肿,BUN5.3mmol/L,10岁曾患急性肾炎,治疗后痊愈。现急诊入院。该病人确诊最有价值的检查是下列何项
下列不属于肾盂肾炎的感染途径的是()
A.Down综合征(21一三体综合征)B.软骨发育不良C.先天性甲状腺功能减低症D.佝偻病E.苯丙酮尿症女,2岁,智能落后,表情呆滞,眼距宽,眼裂小,鼻梁低,口半张,舌伸出口外,皮肤细嫩,肌张力低下,右侧通贯手。最可能的诊断是
某甲(15岁)与某乙(15岁)多次向其同学某丙兜售毒品,均遭某丙拒绝。某甲和某乙恼羞成怒,遂于一日将某丙强行绑住,给其注射了一针毒品。数日后,某丙主动请求某甲和某乙向其出售毒品,遭到二人的拒绝,同时,某甲和某乙看到某丙携带一名牌手机,心生夺财之意二人遂给某
()不仅能改善自然环境,还能为劳动环境中各种因素的优化起到辅助作用。
关于幼儿语言发展阐述正确的是()
根据我国刑法规定,有关精神病人具有的刑事责任能力,错误的是( )。
查找数据时,设查找内容为“b[!aeu]ll”,则可以找到的字符串是
Whatmakespeopleshuntherelativesecurityoffull-timeemploymentandstartupabusinessthemselves?TheEuropeanUnion
最新回复
(
0
)