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
2016-07-17
56
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/vELd777K
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
Inprevioustimes,whenfreshmeatwasinadequate,pigeonswerekeptbymanyhouseholdsasasourceoffood.
What’sLackingin"Sicko"?Whenitcomestoeconomicdecisions,therearealwaystrade-offs(取舍).Gainonethingandyouloses
CannedFoods:ConvenienceandNutritionMeetingyourfamily’snutritionalneedsmayseemdifficultconsideringtoday’sbusyl
Themostcrucialproblemanyeconomicsystemfacesishowtouseitsscarceresources.
HeatandHealthExtremelyhotweatheriscommoninmanypartsoftheworld.Althoughhotweatherjustmakesmostpeoplehot,
TheMind-BodyConnectionsNormanCousinswasafamousAmericanmagazineeditor.In1964,hereturnedfromanoverseastripan
DoubleEffectTheSupremeCourt’sdecisionsonphysician-assistedsuicidecarryimportantimplicationsforhowmedicinesee
AdifferenttechniquesBsocialrelationshipsandcommunicationClanguageandinformationDseveralcausesworkingtogetherEa
YouNeedCourage!ShortlyafterIbeganacareerinbusiness,IlearnedthatCarlWeatherup,presidentofPepsiCo(百事可乐公司
YouNeedCourage!ShortlyafterIbeganacareerinbusiness,IlearnedthatCarlWeatherup,presidentofPepsiCo(百事可乐公司
随机试题
A.呼吸困难B.呕吐C.腰痛D.肌肉震颤E.腹泻属呼吸系统疾病问诊内容的是
现浇柱中纵向受力钢筋的净距不应小于______。
记账凭证录入过程中,会计核算软件会对会计凭证录入的正确性进行控制,主要包括()。
关于现金管理的基本要求,下列说法中,正确的是()。
下列不属于法定代理终止原因的是( )。
下列关于依法收贷的说法,正确的有()。
最初,大学语文蓬勃兴旺,各高校普遍开设大学语文为非中文系学子必修课;20世纪90年代后,几乎所有的社会生活领域都__________地被卷入经济运动之中,人文精神普遍__________,人文教育空间被挤占__________,大学语文从必修课转为选修课,
继承人的以下行为中,导致继承权丧失的是()。
Somepeoplearefriendlydrunks,whereasothersarehostile,potentiallyposingadangertothemselvesandothers.Thedifferenc
Pricesdeterminehowresourcesaretobeused.Theyarealsothemeans【C1】______whichproductsandservicesthatareinlimite
最新回复
(
0
)