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
76
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.
What’s the passage mainly about?
选项
A、The world’s food problems.
B、The new advancement in biotech.
C、The characteristics of genetically modified foods.
D、How biotech can help solve the world’s food problems.
答案
C
解析
通读全文可知A、B、D三项虽然都与文章内容有关,但是都没有突出本文的中心。文章第一段第一句话就讲到转基因食品是引起人们争论的热门话题,紧接着说明人们争论的原因、转基因食品的现状、转基因食品带给人们的益处。由此可以看出文章的中心是转基因食品。因此正确答案为C。
转载请注明原文地址:https://kaotiyun.com/show/w0HO777K
0
在职攻硕英语联考
相关试题推荐
Here,soprofligatehasitsusebecometheairconditionerisalmost______theautomobileofthenationaltendencytooverindulge
Tomysurprise,thehousewhichlookedrathershabbyoutsidewasluxuriouslyand______furnishedinside.(北京航空航天大学2015年试题)
(浙江大学2009年试题)Teachersneedtobeawareoftheemotional,intellectual,andphysicalchangesthatyoungadultsexperience,a
(中国矿业大学2013年试题)AlthoughmanypeoplespeakEnglish,theydon’tpronounceitorspellthewordtheyusethesameway.TheUnit
Appliedresearch,______tosolvespecificpracticalproblems,hasanimmediateattractivenessbecausetheresultscanbeseenand
Lincoln,whommanyregardasoneofourgreatpresidents,wasoften______despitehisreputationoftellinggoodjokes.
AnOhioStateUniversitystudyhaslinkedbehaviorinyoungchildren【C1】______thetypeofjobtheirmotherhas.Motherswithcom
A______ofsympathysweptthroughJapanyesterdayaspeopleheardtheshockingnews.
Doyouknowthefactthatbroadbeancontains______thatmustbedestroyedbycookingthemathightemperaturebeforeeatingthem
DuringMcDonald’searlyyearsFrenchfriesweremadefromscratcheveryday.RussetBurbankpotatoeswere【C1】______,cutintosh
随机试题
患者男性,63岁,患前列腺增生4年,近半年尿频明显,排尿困难,偶有尿流中断1个月,此次复查泌尿系超声,发现前列腺非均质性改变更加明显,并出现两个稍高回声结节,但未见明显血流信号。为明确结节的性质,最有价值的诊断方法是
主热证,亦可见于戴阳证的面色为主肾虚、寒证、水饮、血瘀的面色为
张先生认购某面值为100元的5年期附息债券,若债券的票面利率与到期收益率均为10%,则债券现在的价格为()。
保荐人(主承销商)的尽职调查必须达到的目的有()
企业提取盈余公积金的主要目的有()。
已知对某装修材料公司的某类材料的方差分析,如表2.2—6所示。 当α=0.01时,用F法检验x对y的影响是()。
一个个的后来者,他们在这里扼腕叹息、仰天长叹或沉思默想。他们中有诗人,有将军,有朝廷的大臣,有封疆大吏,甚至还有割据巴蜀的草头王。但不管什么人,不管是什么出身,负有什么使命。只要在武侯祠的这个天井小院里一站,就受到一种庄严的召唤。人人都为他的凛然正气所__
AbranchoftheNationalAcademyofSciencesreportedWednesdaythatfederalsafetyregulatorslackoftheexpertisetomonitor
Thepoliticalchangesthatmadeglobalisationpossibletookplaceinaremarkablyshortperiodoftime—from1978to1991tobe_
Whydoteenagegirlsavoidmathematicscourses?Girlsdon’twanttoachievehigherthanboysbecause______.
最新回复
(
0
)