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
Many Americans have a grossly distorted and exaggerated view of most of the risks surrounding food. Fergus Clydesdale, head of t
Many Americans have a grossly distorted and exaggerated view of most of the risks surrounding food. Fergus Clydesdale, head of t
admin
2010-08-07
80
问题
Many Americans have 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 pesticides, 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 which can cause cancer. Mushrooms might be banned if they were judged by the same standard that apply to food additives. 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 handle 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" (Line 4, Para. 2), Bruce Ames means______.
选项
A、plants produce certain chemicals to combat pests and diseases
B、plants absorb useful chemicals to promote their growth
C、farmers use man-made chemicals to dissolve the natural chemicals in plants
D、farmers use chemicals to protect plants against pests and diseases
答案
A
解析
语义题。本题所涉及的句子在第二段,根据该句所处上下文“… up to 10% of a plant’s weight is made up of natural pesticides…”和“And many naturally produced chemicals…”可知正确答案为A。
转载请注明原文地址:https://kaotiyun.com/show/IBxd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Whycan’tthemangotosomeplacesandhavefunwithhisfriends?
Apsychologicalissuethatbegantobediscussedinthe1950swasthequestionofthemostappropriateageforsecondlanguagel
Asaresultofrisinguniversitycosts,whataremanystudentsfindingitnecessarytodo?
WhatdowelearnabouttheuseofsolarenergyintheUSA?
SoftwarepiracyproblemsexistandhavebeenexacerbatedinrecentyearsduetoISoverload,decentralizedpurchasing,budgetc
Forwhatreasonislanguagethegreatestinventionofmankind?
ConversationattheairportDeparturetimefortheplane______.______1FlightNo.____
Inlessthan30year’stimetheStarTrekholodeckwillbeareality.Directlinksbetweenthebrain’snervoussystemandacomp
Afindinginrecentyearsshowsthatmencannotmanufacturebloodasefficientlyaswomencan.Thismakessurgeryriskierforme
Thepromiseoffindinglong-termtechnologicalsolutionstotheproblemofworldfoodshortagesseemsdifficulttofulfillMany
随机试题
我们要更加自觉地坚定党性原则,勇于直面问题,敢于刮骨疗毒,要做到()
护理科研的最关键阶段是()
为休克病人补充血容量应首选
A.栓剂 B.混悬液 C.舌下片 D.颗粒剂 E.透皮贴剂用前必须要振摇的药品是
()是指商业银行通过发放贷款、进行投资、开展金融产品交易、为客户提供金融服务所获得的盈利。
某企业出售—台设备,原价120万元,已提折旧30万元,出售设备时发生各种清理费用2万元,出售设备所得价款117万元(含增值税税额17万元)。该设备出售净收益为()万元。
语文老师在讲述《静夜思》的时候,通过给大家播放了一些关于月亮的图片导入课程,这属于()。
HDB3码与AMI码相比,弥补了AMI码中__________的问题,其方法是用__________替代__________。()
A.癌珠B.印戒状细胞C.R-S细胞D.AFP阳性E.癌巢胃黏液癌可见
在考生文件夹下有数据库“投资”,请编写并运行符合下列要求的程序:设计一个名为“cd1”的菜单.菜单中有两个菜单项“计算”和“关闭”。程序运行时,单击“计算”菜单项应完成下列操作:①将现价比买入价高的股票账户信息存入“账户_y1”表,其中
最新回复
(
0
)