首页
登录
职称英语
If you want to spark a heated debate at a dinner party, bring up the topic o
If you want to spark a heated debate at a dinner party, bring up the topic o
游客
2025-03-25
31
管理
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. [br] According to the passage, genetically modified foods
选项
A、are superior to naturally grown foods
B、might prove to be risky to human health
C、are going to replace naturally grown foods.
D、can solve the food problems in developing countries
答案
B
解析
本文第一段第二句话讲到“转基因、高技术含量的农作物生产向人们提出了各种各样的有关于环境、健康、安全及伦理(违反自然规律)问题”,第三段最后一句话又讲到“生物技术带来的益处是否超过其所带来的风险?"由此可以看出转基因食品可能会有害人们的健康,所以本题的正确答案为B。文章中根本没有就genetically modified foods和naturally grown foods做比较,所以A选项错误。genetically modified foods将取代naturally grown foods也是无中生有,所以C选项不正确。“转基因食品能帮助解决发展中国家人们的粮食短缺及营养不良问题”这是文中没有说到的,所以D选项也错了。
转载请注明原文地址:https://tihaiku.com/zcyy/4012201.html
相关试题推荐
Shesaidthatshewouldinvitemetodinner,butIwonderifshewaskiddingor_
Astheso-calleddebateoverhealthcarecontinuesintheSenate,letmetake
SpeakerA:Thankyousomuchforthewonderfuldinner.TomandIreallyenjoyed
Ifyouwanttosparkaheateddebateatadinnerparty,bringupthetopico
Ifyouwanttosparkaheateddebateatadinnerparty,bringupthetopico
Woman:Don’tyouthinkthiscandlelightdinnerisromantic?Man:Sure,atleas
TheSmiths______dinnerwhenthephonerangsuddenly.A、arehavingB、hadC、were
SpeakerA:Thatwasagreatdinner.Thanksalot.You’llhavetocometoourpla
TheSmiths______dinnerwhenthephonerangsuddenly.A、arehavingB、hadC、wereha
Thestudentsmadeheateddiscussions______theeducationsystem.A、astoB、dueto
随机试题
AccordingtoIraqis,theAlSamoudis______.[originaltext]Ourcorrespond
[originaltext]Choosingwhattoeatseemslikeasimpledecision,butvariou
数字出版产业的基础业态是( )。A.电子书出版 B.数字期刊 C.数字报纸
县级以上地方人民政府及其卫生行政主管部门未履行职责,对突发事件隐瞒、谎报的,对其
善于凉血除蒸,治疗骨蒸潮热的药物是()。A.地骨皮 B.银柴胡 C.丹
药师调剂处方时要做到“四查十对”,四查不包括A查药品 B查临床诊断 C查配伍
某酒厂为增值税一般纳税人,2020年1月份发生下列业务: (1)销售自制粮食
从横向分类来看,企业薪酬制度是由多种单项制度组合而成,包括()A:工资制度
工程项目设计过程中的设计策划通常以()的形式编制。 A.设计计划B.设计制
投标文件应当包括的内容有( )。A.已标价工程量清单 B.法定代表人身份证明
最新回复
(
0
)