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
I saw a television advertisement recently for a new product called an air sanitizer. A woman stood in her kitchen, spraying the
I saw a television advertisement recently for a new product called an air sanitizer. A woman stood in her kitchen, spraying the
admin
2012-05-29
44
问题
I saw a television advertisement recently for a new product called an air sanitizer. A woman stood in her kitchen, spraying the empty space in front of her as though using Mace against an imaginary assailant. She appeared very determined. Where others are satisfied with antibacterial-laced sponges, dish soaps, hand sanitizers and telephone wipes, here was a woman who sought to sterilize the air itself.
As a casual student of microbiology, I find it hard to escape the absurdity here. This woman is, like any human being, home to hundreds of trillions of bacteria. Bacteria make up a solid third, by weight, of the contents of her intestines. If you were to sneak into her bathroom while she was showering—and based on my general impression of this woman from the advertisement, I don’ t recommend this—and secret away a teaspoon of the water at her feet, you would find some 820 billion bacteria. Bacteria are unavoidably, inevitably—and, usually, utterly benignly—a part of our world.
The fantasy of a germ-free home is not only absurd, but it is also largely pointless. Unless you share your home with someone very old, very young (under 6 months) or very ill, the few hundred bacteria on a countertop, doorknob or spoon pose no threat. The bacteria that cause food poisoning, the only significant rational bacterial worry in the average home, need to multiply into the thousands or millions before they can overwhelm your immune system and cause symptoms.
The only way common food poisoning bacteria can manage this is to spend four or five hours reproducing at room temperature in something moist that you then eat. If you are worried about food poisoning, the best defense is the refrigerator. If you don’t make a habit of eating perishable food that has been left out too long, don’ t worry about bacteria.
Viruses are slightly different. You need only pick up a few virus particles to infect yourself with a cold or flu, and virus particles can survive on surfaces for days. So disinfecting the surfaces in the home should, in theory, reduce the chances of picking up a bug.
In practice, the issue is less clear. A study by Dr. Elaine Larson at the Columbia School of Nursing called into question the usefulness of antibacterial products for the home. In New York , 224 households, each with at least one preschooler, were randomly assigned to two groups. One group used antibacterial cleaning, laundry and hand-washing products. The other used ordinary products. For 48 weeks, the groups were monitored for seven symptoms of colds, flu and food poisoning—and found to be essentially the same. According to Dr. Gerba’ s research, an active adult touches an average of 300 surfaces every 30 minutes. You cannot win at this. You will become obsessive-compulsive, just wash your hands with soap and water a few times a day, and leave it at that.
What is the main idea of this passage?
选项
A、We don’ t need to worry too much about bacteria everywhere in our life.
B、Antibacterial products for the home are found to be effective.
C、The TV advertisement the writer mentioned is a total failure.
D、The existent bacteria pose a threat only to the very young and very old.
答案
A
解析
这篇文章从一则电视广告引出话题——消除细菌,作者认为其absurd和pointless,并阐明其理由,并指出细菌和病毒的区别,故文章目的应为选项A。
转载请注明原文地址:https://jikaoti.com/ti/QOlMFFFM
本试题收录于:
A类竞赛(研究生)题库大学生英语竞赛(NECCS)分类
0
A类竞赛(研究生)
大学生英语竞赛(NECCS)
相关试题推荐
Beingabletomulti-taskishailedbymostpeopleasawelcomeskill,butnotaccordingtoarecentstudywhichclaimsthatyoun
WheretheWildThingsare"Ididn’tsetouttomakeachildren’smovie,"saysBeingJohnMalkovichdirectorSpikeJonze,"I
Mostpeoplewishtheyhadbettermemoriesandworryaboutforgettingthingsastheygetolder.Butdidyouknowthaiwehavedif
Distributetheremainingnumbers1-7and9-12aroundthenodessothateachofthesixlinesoffournumbersaddupto26.
Aretherereallythosewhoarenightpeopleandthosewhoaredaypeople,oristhatsimplyaroutinethatcanbechanged?Scien
Malnutritionduringweaningage—whenbreastmilkisbeingreplacedbysemi-solidfoods—ishighlyprevalentinchildrenofpoorh
TurnontheTVorwebpage,andyoumayseeamousetryingtosellyousomething.GointoanInternetchatroom,andyoumaysee
Onceyourbusinessbecomesinternational,_________constantlywillbepartofyourlife.
Forthispart,youareallowed30minutestowriteashortessay.Youshouldstartyouressaywithabriefdescriptionofthepic
Thesemelodiousfolksongsaregenerally_________toSmith,averyimportantmusicianofthecentury.
随机试题
Windows操作系统根据扩展名建立了应用程序与文件的关联,但用户不能建立运用关联。()
Ineverycultivatedlanguagetherearetwogreatclassesofwordswhich,takentogether,comprisesthewholevocabulary.First,
A.活疫苗B.死疫苗C.类毒素D.外毒素E.病原体的部分成分破伤风疫苗
维持躯体姿势的最基本方式是
卵子受精部一般是在()
我国《商业银行资本充足率管理办法》规定银行的附属资本不得超过核心资本的()。
OPEN票是机票中的一种,它是()。
野猫队是不可能进入决赛的。如果野猫队进入决赛,那么太阳就从西边出来了。以下哪项与上述论证方式最相似?()
李惠个子比胡戈高;张凤元个子比邓元高;邓元个子比陈小曼矮;胡戈和陈小曼的身高相同。如果上述断定为真,以下哪项也一定为真?
Thesuccessofaspeechisoftenattributedtotheskillofthespeaker,withmeritbeinggiventospeakerswhoareconfident,a
最新回复
(
0
)