首页
登录
职称英语
I saw a television advertisement recently for a new product called an air sa
I saw a television advertisement recently for a new product called an air sa
游客
2024-08-08
19
管理
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. [br] 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://tihaiku.com/zcyy/3711170.html
相关试题推荐
IhavecalledthisbookTheInsomniac’sDictionarypartlybecauseitwasbor
IhavecalledthisbookTheInsomniac’sDictionarypartlybecauseitwasbor
IhavecalledthisbookTheInsomniac’sDictionarypartlybecauseitwasbor
IhavecalledthisbookTheInsomniac’sDictionarypartlybecauseitwasbor
IhavecalledthisbookTheInsomniac’sDictionarypartlybecauseitwasbor
ThisproductinformationisintendedonlyforresidentsoftheUnitedKingdo
ThisproductinformationisintendedonlyforresidentsoftheUnitedKingdo
Iwastohavemadeaspeechif______.A、IwasnotcalledawayB、nobodywouldhav
Whenthetelevisionisgood,nothing—notthetheater,notthemagazines,or
Whenthetelevisionisgood,nothing—notthetheater,notthemagazines,or
随机试题
Onceapictureisprovedtobeaforgery,itbecomesquite______.(2004年考试真题)A、i
InhistoricStoneTown,"wazee"______.[br]Accordingtothepassage,Muslimsi
起重机上的临时工作台应牢固可靠,并应设不低于()m的防护栏杆。A.0.8 B.
混凝土结构破损修补用修补材料中用于立模浇筑的混凝土骨料最大粒径不宜大于20mm采
常用的肌性标志不包括:A.胸大肌 B.臀大肌 C.小腿三头肌 D.胸锁乳突
患者月经先期10余天,量多质稠,经色深红,口渴心烦,舌绛,脉滑数,为A.虚热证
甲企业为一家食品加工企业,2019年甲企业发生以下业务: 销售货物一批,开具增
心理咨询师的职业生命线是()。 (A)求助者的身心健康是否得到最大限度地维护
求助者一般资料:男性,20岁,工厂工人。 求助者主诉:求助者半年以前与同一工
(2014年真题)下列合同中,属于双务、不要式合同、有偿合同的有()。A.建设
最新回复
(
0
)