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
2011-03-05
163
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 he 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.
According to the author, one will become obsessive-compulsive ______.
选项
A、if he washes his hands every time he touches a surface
B、if he only washes his hands with soap and water
C、if he could not win over the bacteria in his home
D、if he does not fight against the bacteria at home
答案
A
解析
最后一段指出an active adult touches an average of 300 surfaces every 30 minutes,所以每次摸完后洗手是不太可能的,从而become obsessive-compulsive,所以A选项正确。
转载请注明原文地址:https://kaotiyun.com/show/bbyK777K
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
ShemarriedaveryniceyoungarchitectfromBelfast,______shemetonabusduringherjourneytoNorthernIreland.
Greatmindsgenerallylookatlifeinaway______tothemselves.
Whospentalotfortheweddingaccordingtotheconversation?
【T1】我希望这个新学年成为对我的学生们有益的一年。(want…tobe)他们会在新学年学习很多东西,包括微积分、莎士比亚和失败。没错,就是失败。根据多种流传的说法,梭罗是个失败者。这位哈佛毕业生似乎把自己的大部分时间都用来在瓦尔登湖畔家
—Icanneverdowellinmyfirstclassoftheday.Ithinkmybrainisstillasleep!—______—Maybeweshouldgojoggingbefore
Fortheadvertisedposition,thecompanyoffersa(n)_________salaryandbenefitspackage.
ThesixteenthinternationalAIDSconferenceopenedonSundayinToronto,Canada.Morethantwenty-fourthousanddelegatesfromo
这里,我要对两国青年朋友说几句话。曾在贵校学习过的李大钊先生说过,为世界进文明,为人类造幸福,以青春之我,创建青春之人类。(81)两国青年是中日友好的生力军,中日友好的未来要靠你们开创。(82)我曾多年从事青年工作,对青年朋友有着特殊感情。我喜欢同青年朋友
A、Sheisnotsatisfiedwithherbirthdaypresent.B、Shehasgottwodigitalcamerasforherbirthday.C、Shehasbeenusinganol
A、Funny.B、Terrible.C、Boring.D、Horrible.A女士说电视节目很有趣,男士说他觉得非常无聊。听音时注意听清楚题目问的是谁的观点。
随机试题
消化性溃疡的症状和腹痛是胃泌素瘤最常见的症状。改为:
残气/肺总量之比增加不见于哪种情况
A.生麻黄B.蜜麻黄C.麻黄绒D.蜜麻黄绒E.醋麻黄适用于表证已解而喘咳未愈的老人、幼儿及体虚患者的是
患者,男,65岁。上颌无牙,下颌牙均健康,多次修复上半口义齿,但仍多次折断,现要求重新修复,医师设计金属基托式上半口义齿。医师取印模、取咬合关系,上架采用下述哪种金属制作该基托为最轻
建筑物内燃气锅炉房的门应采用()。
下列选项中,不属于一价定律实现条件的是( )。
根据税务登记相关规定,下列选项中需要办理变更税务登记的有()。
科学家认为,海洋对大气中二氧化碳的吸收暂时缓解了二氧化碳浓度的上升速度,一旦这种缓解作用失效,大气中二氧化碳的浓度将以更快速度增长。那么,增加的二氧化碳是否会导致大气温度上升呢?虽然绝大部分科学家相信答案是肯定的,但这毕竟是一个漫长的过程,存在诸多变数。于
经院哲学最著名的代表人物是意大利神学家(),著有《神学大全》。
CIRCUMVENTION:
最新回复
(
0
)