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
Food Fright Experiments under way in several labs aim to create beneficial types of genetically modified(GM)foods, including
Food Fright Experiments under way in several labs aim to create beneficial types of genetically modified(GM)foods, including
admin
2015-07-04
27
问题
Food Fright
Experiments under way in several labs aim to create beneficial types of genetically modified(GM)foods, including starchier potatoes and caffeine-free coffee beans. Genetic engineers are even trying to transfer genes from a cold-water fish to make a frost-resistant tomato. A low-sugar GM strawberry now in the works might one day allow people with health problems such as diabetes to enjoy the little delicious red fruits again. GM beans and grains supercharged with protein might help people at risk of developing kwashiorkor. Kwashiorkor, a disease caused by severe lack of protein, is common in parts of the world where there are severe food shortages.
Commenting on GM foods, Jonathon Jones, a British researcher, said, "The future benefits will be enormous, and the best is yet to come. "
To some people, GM foods are no different from unmodified foods. " A tomato is a tomato, " said Brian Sansoni, an American food manufacturer.
Critics of GM foods challenge Sansoni’s opinion. They worry about the harm that GM crops might do to people, other animals, and plants.
In a recent lab study conducted at Cornell University, scientists tested pollen made by Bt corn, which makes up one-fourth of the U. S. corn crop. The scientist sprinkled the pollen onto milkweed, a plant that makes a milky juice and is the only known food source of the monarch butterfly caterpillar. Within four days of munching on the milkweed leaves, almost half of a test group of caterpillars had died. " Monarchs are considered to be a flagship species for conservation, " said Cornell researcher Linda Raynor. "This is a warning bell. "
Some insects that are not killed by GM foods might find themselves made stronger. How so? The insecticides used to protect most of today’s crops are sprayed on the crops when needed and decay quickly in the environment. But GM plants produce a continuous level of insecticide. Insect species feeding on those crops may develop resistance to the plants and could do so in a hurry, say the critics. Insects may also develop a resistance to the insecticide Bt.
At the forum on GM food held last year in Canada, GM crops that have been made resistant to the herbicide might crossbreed with wild plants, creating" superweeds" that could take over whole fields.
So where do you stand? Should GM foods be banned in the United States, as they are in parts of Europe? Or do their benefits outweigh any of the risks they might carry?
Paragraphs 1, 2&3 try to give the idea that______.
选项
A、GM foods are particularly good to the kwashiorkor patients
B、GM foods may have both benefits and harm
C、we cannot recognize the benefits of GM foods too early
D、GM foods may bring about great benefits to humans
答案
D
解析
第一、二段确实谈到了转基因食物给人类带来的美好前景。
转载请注明原文地址:https://kaotiyun.com/show/87Qd777K
本试题收录于:
职称英语理工类B级题库职称英语分类
0
职称英语理工类B级
职称英语
相关试题推荐
AinyourbodyBwithoutwaterCbeforelongDforachangeEonabusydayFtoyourweightDon’tforgettodrinkenoughwater
TheDrinkYourBodyNeedsMost1Ourbodiesareestimatedtobeabout60%to70%water.Bloodismostlywater,andourmuscles,
ScienceandTechnologyThereisadifferencebetweenscienceandtechnology.【B1】______Sciencehastodowithdiscoveringth
TryingtoFindaPartnerOneofthemoststrikingfindingsofarecentpollintheUKisthatofthepeopleinterviewed,one
TheFirstFourMinutesWhendopeopledecidewhetherornottheywanttobecomefriends?Duringtheirfirstfourminutestog
TheFirstFourMinutesWhendopeopledecidewhetherornottheywanttobecomefriends?Duringtheirfirstfourminutestog
WomenwithAIDSForalongtimewomenwithHIVwereignoredbecausethefocuswastotallyonHIVmen.Thegaycommunitywas
HawaiiHawaii’snativeminorityisdemandingagreaterdegreeofsovereigntyoveritsownaffairs.Butmuchofthearchipel
Theterm“composition”referstothewaythecomponentsofadrawingarearrangedbytheartist.
Sheisincapableofdoingthedemandingjob.
随机试题
JDBC是面向()的。
非上市公司股权激励的模式中的业绩股份来源主要有()。
A、行政方法B、经济方法C、法律方法D、思想教育方法E、社会心理学方法运用社会学、心理学知识,按照群体和个人的社会心理活动特点及其规律进行管理的方法是
女孩,6个月,出生后发现枕部中线肿物,约4cm×3cm×3cm,质中,不活动,基底较宽,透光(一),按压时前囟无明显搏动感。术后最易出现的并发症是
患者,男,53岁。饮酒时发生语言不清、呕吐,随即昏迷,右侧肢体瘫痪;血压230/120mmHg,诊断为“脑出血”。为防止出血加重,应首先采取的措施是()。
大叶性肺炎的好发人群是()。
企业将经营领域扩展到与原先完全无联系的产品和销售领域中,属于()。
定点超越是指企业将其产品、服务和其他业务活动与自己最强的竞争对手或某一方面的领先者进行连续对比衡量的过程。对比衡量的目的是发现自己的优势和不足,或寻找行业领先者之所以会领先的内在原因,以便为企业制定适当的战略计划提供依据。根据上述定义,下列选项不属于定点
在FoxBASE中要建立一个与现有的某个数据库有完全相同结构和数据的新数据库,应该使用如下语句中的哪个语句?
CitingOhioordinancesthatallowindividualstoseekchargesagainstsomeonethey’veseencommitacrime,sevenEuclidresident
最新回复
(
0
)