首页
登录
职称英语
Genetic Engineering is a radical and rapidly developing technology that touc
Genetic Engineering is a radical and rapidly developing technology that touc
游客
2024-04-22
5
管理
问题
Genetic Engineering is a radical and rapidly developing technology that touches our lives through its application in medicine, forensics, industry and agriculture. Through this science humans are fast in becoming the architects of life but there are those who warn against the unknown dangers of playing God while others see its benefits in our fight against disease and the production of abundant food supplies.
In the past 50 years, plant and animal production has increased dramatically. Today, the human population is the largest it has ever been and fortunately we produce more food per capita than ever before. Despite the fact that we have enough food for every single human being to have an adequate diet, about 1 billion people still suffer from malnutrition and hunger. A lot of the increase in food production is attributed to efficient farming methods and environmental factors such as irrigation, pest and weed control but the largest contributing factor is modern plant and animal breeding.
So what are GM foods and what are the concerns for the consumer? The main difference between GM foods and traditional breeding methods is the direct modification or manipulation of certain genes. Traditional methods involve mixing thousands of genes whereas genetic modification allows just one individual gene, or a small number of genes, to be inserted into a plant, or animal.
The benefits of GM foods are enormous. Genetic modification can be used to give crops immunity to plant viruses or to improve the nutritional value of a plant. In animals intended for food, genetic modification could potentially increase how fast and how big they grow. Starvation on any part of the planet could be a thing of the past as we could control the yield, varieties and size of foods and produce strains that are resistant to pests, are extreme in temperature and are tolerant to herbicides.
Opponents of GM foods however consider their production to be the world’s biggest uncontrolled biological experiment, a disaster waiting to happen. The biggest concerns are the effects that an uncontrolled genetically modified species could potentially have on human and animal health, agriculture, and on the environment as a whole. Genetically modified species have the potential to become biological pollutants that are far worse than chemical pollutants as they would be virtually impossible to control since they are alive, migrate and could mutate producing even more dangerous offspring. This could lead to irreversible damage to the ecology of the planet. [br] What is the main opposition to the production of GM foods?
选项
A、Chemical pollutants are more dangerous.
B、The potential of producing harmful offspring could not be controlled.
C、GM foods are not properly tested.
D、The release of larger species into the environment.
答案
B
解析
细节题。题干问,反对转基因食品的主要理由是?文章第五段,“theywould be virtually impossible to control…”,很难去控制转基因中的有害物质,所以,正确答案是B。
转载请注明原文地址:https://tihaiku.com/zcyy/3566556.html
相关试题推荐
GeneticallyModifiedFoods—FeedtheWorld?[A]Ifyouwanttosp
GeneticallyModifiedFoods—FeedtheWorld?[A]Ifyouwanttosp
GeneticallyModifiedFoods—FeedtheWorld?[A]Ifyouwanttosp
GeneticallyModifiedFoods—FeedtheWorld?[A]Ifyouwanttosp
GeneticallyModifiedFoods—FeedtheWorld?[A]Ifyouwanttosp
GeneticallyModifiedFoods—FeedtheWorld?[A]Ifyouwanttosp
IfthegoalofanengineeringcampatKetteringUniversityistogethighsc
IfthegoalofanengineeringcampatKetteringUniversityistogethighsc
EducationTechnology:Crucial,orJustGadgets?A)Underenormous
EducationTechnology:Crucial,orJustGadgets?A)Underenormous
随机试题
IsthatFolgerscoffeeinyourcuporMaxwellHouse?Nowyounolongerhave
______istheworld’slargestexporterofdairyproducts.A、TheUnitedStatesB、Ne
周总理在学生时代,曾立志要“为中华之崛起而读书”,他的学习动机属于() A.近
肛瘘的常见病因是A.内痔切除术后 B.嵌顿性内痔 C.血栓性内瘘 D.肛管
宏观经济中定量分析预测的基础是( )。A.世界经济动态 B.数据资料 C.
WhenWashingtonD.C.wasburnedin1814,D
甲硝唑最常见的不良反应是A.白细胞减少B.恶心和口腔金属味C.肢体麻木D.急性溶
重要电力客户应按照国家和电力行业有关标准、规程和规范的要求,对自备应急电源定期进
左边给定的是纸盒的外表面,下面哪一项不能由它折叠而成? A.如上图所示 B.
2016年6月份,我国社会消费品零售总额26857亿元,同比增长10.6%,环比
最新回复
(
0
)