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
34
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.
According to the author, if you want to keep healthy, you had better______.
选项
A、make the room dry
B、keep the food in the refrigerator
C、wash your hands as much as possible
D、clean the surfaces with anti-bacterial products
答案
B
解析
四个选项中只有选项B在文中倒数第三段If you are worried about food poisoning.The best defense is the refrigerator.提到,故答案为选项B。
转载请注明原文地址:https://kaotiyun.com/show/MhyK777K
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
Thedebateoverwhetherdogsorcatsmakebetterpetswasgivenanewdimensionrecently,anddogsseemtohavecomeoutthe【C1】
Thereisnomagicrecipeforsuccess,butthereisoneessential【C1】ing______:therightattitude.Withoutapositiveattitude
Asetofdominoes(多米诺)consistsofrectangular(矩形的)tileseachcarryingtwonumbersfrom0to6whichrepresentedbypatterns
Oneoftheinterestingthingsaboutlanguagesisthewaytheychangeovertime.InEnglish,everythingfromspellingtovocabula
Thetermcultureshockwasintroducedforthefirsttimein1958todescribetheanxietyproducedwhenapersonmovestoacompl
"Notuntilsciencebecameprominent______beabolished",somepeopleargue.
Rearrangethelettersofthetwowordsbelowtoformtwonewonesinthespaceprovided.
Hespokeso______thatevenhisopponentswerewonoverbyhisarguments.
Sheis______amusicianthanherbrother.
随机试题
电脑作为日常工具走进寻常百姓家,既给我们的生活带来便利,同时电脑病毒、黑客等问题也给我们带来困扰。以下关于计算机病毒的叙述,正确的是()。①我们平常所说的“黑客”与“计算机病毒”其实是一回事②若用杀毒盘清毒后,感染病毒的文件可以完全恢复到原来的状
遵守法律法规不要求()。
患儿,男,5个月。发热,咳嗽,喘憋5天,查体:体温38.1℃。呼吸70次/分,吸气性呼吸困难,伴鼻扇和三凹征,满肺喘鸣音和少许细湿啰音,血WBC6.5×109/L,淋巴细胞占80%,本病诊断最大可能是
男性患者,24岁,反复胸闷气短4年,近1周加重,端坐时即感胸闷,伴咳嗽、下肢水肿,肝脏肿大。超声心动图示心脏扩大,室壁变薄,EF值10%,二尖瓣、三尖瓣中度反流。既往无其他病史。若经治疗,患者病情好转稳定,需小剂量开始加用
杜某拖欠谢某100万元。谢某请求杜某以登记在其名下的房屋抵债时,杜某称其已把房屋作价90万元卖给赖某,房屋钥匙已交,但产权尚未过户。该房屋市值为120万元。关于谢某权利的保护,下列哪些表述是错误的?(2014年试卷三第54题)
根据民事诉讼理论和相关法律法规,关于当事人的表述,下列哪些选项是正确的?(2014年卷三第81题)
中国现行房地产税有房产税、()。
属于集体所有和私人所有的(),其所有权受国家保护。
A、 B、 C、 D、 A
Readthememoandtheadvertisementbelow.Completethebookingformontheoppositepage.Writeawordorphrase(inCAPITA
最新回复
(
0
)