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
Genetic Engineering is a radical and rapidly developing technology that touches our lives through its application in medicine, f
Genetic Engineering is a radical and rapidly developing technology that touches our lives through its application in medicine, f
admin
2015-01-31
58
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.
Why does the author claim that starvation could be a thing of the past in paragraph 4?
选项
A、Because GM is immune to plant viruses.
B、The temperature can be modified by scientists.
C、Scientists will be able to control the size, variety and immunity of crops and animals.
D、People are easily accessible to food nowadays.
答案
C
解析
细节题。原文第四段最后一句,明确指出“Starvation on any part of theplanet…and are tolerant to herbicides.”由于可以控制食品的生产量、变种、规格等,生产出抗虫性强,耐温性强、耐除草剂的物种,饥饿便不复存在了。选项C与原文大意相符。
转载请注明原文地址:https://kaotiyun.com/show/mth7777K
0
大学英语六级
相关试题推荐
DoestheWorldFaceaFutureofWaterWars?[A]Throughouthistory,peoplehavefoughtbitterwarsoverpoliticalideology,natio
Part-TimeVegetarians[A]Forthelast15years,DawnJacksonBlatnerhasbeenwhat’snowcalleda"flexitarian"or"almostveget
A、AmericansarehappierthanEuropeans.B、TheGDPofEuropeishigherthanthatofAmerica.C、Peopleallovertheworldchooset
HowtoCreateaHomeLibrary[A]"Icannotlivewithoutbooks,"declaredU.S.PresidentThomasJeffersontohisfriendJohnAdam
A、2.5million.B、2.8billion.C、60million.D、60billion.B选项表明,本题考查数字,听音时应留意与数字相关的信息。短文中提到,Britishpeopleeat2.8billioneach
Well-to-doparentsareincreasinglyoptingtosendtheirchildrentosingle-sexprepschools,reversingthetrendofrecentyear
Adultsaregettingsmarterabouthowsmartbabiesare.Notlongago,researcherslearnedthat4-day-oldcouldunderstand【B1】____
Adultsaregettingsmarterabouthowsmartbabiesare.Notlongago,researcherslearnedthat4-day-oldcouldunderstand【B1】____
InancienttimestheChinesefarmedforaliving,andalwayslivedontheland【B1】______theirancestorsandnevermovedwithout
Inasense,thenewprotectionismisnotprotectionismatall,atleastnotinthe【C1】______senseoftheterm.Theoldprotectio
随机试题
I______youwiththefunds.Whydidn’tyouaskme?
初产妇:孕40周,阵发性腹痛10小时,查:LOA,已入盆,胎心率170次/min,子宫处于持续紧张状态,间歇期亦不能放松,产妇呼痛不已,查:宫口开大1cm,S=0,观察2小时。产程无进展,诊断为
贫血伴黄疸最可能的诊断是
若E公司委托H房地产经纪公司做市场需求调研,则H公司主要应做()的调研。
房地产经纪收费管理属于房地产经纪行业的()。
我国工程建设中的设防,是从地震基本烈度()开始设防。
目前,我国的证券投资基金主要是()。
教师职业倦怠是用来描述教师不能顺利应对()时的一种极端反应。
中国自古是农耕国家,在农耕社会,农业经济收益周期较长,而且大自然往往具有不确定性,因此长年与大自然打交道的中国人就养成了______和勤俭节约的良好品质。“细水长流,吃穿不愁”的文化观念,使我们习惯于平常______,将省下或富余的财富储蓄起来,为未来做打
把道德情感的培养置于中心地位的德育模式是()。
最新回复
(
0
)