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
考研
Many Americans harbor a grossly distorted and exaggerated view of most of the risks surrounding food. Fergus Clydesdale, head of
Many Americans harbor a grossly distorted and exaggerated view of most of the risks surrounding food. Fergus Clydesdale, head of
admin
2010-01-13
77
问题
Many Americans harbor a grossly distorted and exaggerated view of most of the risks surrounding food. Fergus Clydesdale, head of the department of food science and nutrition at the University of Massachusetts-Amherst, says bluntly that if the dangers from bacterially contaminated chicken were as great as some people believe, "the streets would be littered with people lying here and there."
Though the public increasingly demands no-risk food, there is no such thing. Bruce Ames, chairman of the biochemistry department at the University of California, Berkeley, points out that up to 10% of a plant’s weight is made up of natural pesticide (杀虫剂). Says he. "Since plants do not have jaws or teeth to protect themselves, they employ chemical warfare." And many naturally produced chemicals, though occurring in tiny amounts, prove in laboratory tests to be strong carcinogens--a substance that can cause cancer. Mushrooms (蘑菇) might be banned if they were judged by the same standards that apply to food additives (添加剂). Declares Christina Stark, a nutritionist at Cornell University: "We’ve got far worse natural chemicals in the food supply than anything man-made.
Yet the issues are not that simple. While Americans have no reason to be terrified to sit down at the dinner table, they have every reason to demand significant improvements in food and water safety. They unconsciously and unwillingly take in too much of too many dangerous chemicals. If food already contains natural carcinogens, it does not make much sense to add dozens of new man-made ones. Though most people will withstand the small amounts of contaminants generally found in food and water, at least a few individuals will probably get cancer one day because of what they eat and drink.
To make good food and water supplies even better, the Government needs to tighten its regulatory standards, stiffen its inspection program and strengthen its enforcement policies. The food industry should modify some long-accepted practices or turn to less hazardous alternatives. Perhaps most important, consumers will have to do a better job of learning how to select and cook food properly. The problems that need to be tackled exist all along the food-supply chain, from fields to processing plants to kitchens.
By saying "they employ chemical warfare" (Para. 2), Bruce Ames means ______
选项
A、plants absorb useful chemicals to promote their growth
B、plants produce certain chemicals to combat pests and diseases
C、farmers use chemicals to protect plants against pests and diseases
D、farmers use man-made chemicals to dissolve the natural chemicals in plants
答案
B
解析
原文的句意是“因为植物没有坚硬的利齿来保护自己,所以它们只能使用化学(武器)来战斗”,也就是“这些植物会生成某种化学物来抗病抗虫”。
转载请注明原文地址:https://kaotiyun.com/show/atmi777K
0
在职申硕(同等学力)英语
相关试题推荐
A.疝囊高位结扎术B.Bassini法修补术C.Halstod法修补术D.McVav法修补术E.Ferguson法修补术股疝最恰当的手术方式是
PersonalityinAmericansisfurthercomplicatedbysuccessivewavesofimmigrationfromvariouscountries.
ManyAmericansharboragrosslydistortedandexaggeratedviewofmostoftheriskssurroundingfood.FergusClydesdale,headof
Theworldisfullofnewhorrorsandthere’snoplacetohide.Whosaysso?Disasterpsychologists,forastart.Theyarethepe
Theworldisfullofnewhorrorsandthere’snoplacetohide.Whosaysso?Disasterpsychologists,forastart.Theyarethepe
Mostpeoplewouldagreethat,althoughourageexceedsallpreviousagesinknowledge,therehasbeennocorrespondingincrease
A:YouAmericansarefunny!Itseemsasifyouweremarriedtoyourcars.B:______.Iwasreadingthatthereareaboutmillions
Theworldisfullofnewhorrorsandthere’snoplacetohide.Whosaysso?Disasterpsychologists,forastart.Theyarethepe
Theworldisfullofnewhorrorsandthere’snoplacetohide.Whosaysso?Disasterpsychologists,forastart.Theyarethepe
A.Don’tleavetheaudienceout.B.Makeitsimpletounderstand.C.Bepreparedandpractice.D.Complementyourspeechwithvi
随机试题
自我概念评估的重点是什么?
CO2与Hb结合生成氨基甲酰血红蛋白的反应主要受下列哪种因素的调节
男性,50岁,有慢性乙肝病史6年。体检发现血AFP为200ng/ml,肝功能正常;腹部B超及未见肝内占位性病变;2个月后复查发现血AFP为220ng/ml,腹部CT无阳性发现。为明确诊断目前应选择的辅助检查为
某药品生产日期为1999年5月21日,有效期为3年,本品可使用至
属于稳定细胞的是
一侧髁突滑动,另一侧基本为转动运动,此时的下颌运动称为
甲、乙、丙三方合作研发一项新技术,合作开发合同中未约定该技术成果的权利归属。新技术研发成功后,乙、丙提出申请专利,甲不同意。根据合同法律制度的规定,下列关于专利申请的表述中,正确的是()。
Collegestudentsshouldbeencouragedtopursuesubjectsthatinterestthemratherthanthecoursesthatseemmostlikelytolea
Theterm"leader"hasbeenusedalmosttothepointof【C1】______,nowbrandinganyonewho【C2】______inaleadershiprole.Butthe
Thehunter-gatherertribesthattodaylivelikeourprehistorichuman【M1】______ancestorsconsumeprimarilyavegetabledietsu
最新回复
(
0
)