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
医学
We all have offensive breath at one time or another. In most cases, offensive breath emanates from bacteria in the mouth, althou
We all have offensive breath at one time or another. In most cases, offensive breath emanates from bacteria in the mouth, althou
admin
2013-12-14
27
问题
We all have offensive breath at one time or another. In most cases, offensive breath emanates from bacteria in the mouth, although there are other, more surprising causes.
Until a few years ago, the most doctors could do was to counsel patients with bad breath about oral cleanliness. Now they are finding new ways to treat the usually curable condition.
Bad breath can happen whenever the normal flow of saliva slows. Our mouths are full of bacteria feeding on protein in bits of food and shed tissue. The bacteria emit evil-smelling gases, the worst of which is hydrogen sulfide. Mouth bacteria thrive in airless conditions. Oxygen-rich saliva keeps their numbers down. When we sleep, for example, the saliva stream slows, and sulfur-producing bacteria gain the upper hand, producing classic "morning breath". Alcohol, hunger, too much talking, breathing through the mouth during exercise — anything that dries the mouth produces bad breath. So can stress, though it’s not understood why. Some people’s breath turns sour every time they go on a job interview.
Saliva flow gradually slows with age, which explains why the elderly have more bad-breath trouble than younger people do. Babies, however, who make plenty of saliva and whose mouths contain relatively few bacteria have characteristically sweet breath.
For most of us, the simple, dry-mouth variety of bad breath is easily cured. Eating or drinking starts saliva and sweeps away many of the bacteria. Breakfast often stops morning breath.
Those with chronic dry mouth find that it helps to keep gum, hard candy, or a bottle of water or juice around. Brushing the teeth wipes out dry-mouth bad breath because it clears away many of the offending bacteria.
Surprisingly, one thing that rarely works is mouthwash. The liquid can mask bad-breath odor with its own smell, but the effect lasts no more than an hour. Some mouthwashes claim to kill the bacteria responsible for bad breath. The trouble is, they don’t necessarily reach all offending germs. Most bacteria are well protected from mouthwash under thick layers of mucus. If the mouthwash contains alcohol—as most do — it can intensify the problem by drying out the mouth.
We can infer from this passage that______.
选项
A、offensive breath can’t easily be cured
B、elderly people are less offended by bad breath
C、heavy drinkers are less affected by bad breath
D、offensive breath is less affected by alcohol
答案
A
解析
态度题。本文主要讲述的是几年前医生对口臭的建议只是清洁口腔,而现在人们针对口臭的诱因发现了其他的办法,嚼口香糖、刷牙、喝饮料、用漱口水等。但是这些也大多是清洁口腔方面的,而漱口水的作用也只管一个小时左右。因此本文认为口臭是很难被医治的。
转载请注明原文地址:https://jikaoti.com/ti/kRNDFFFM
本试题收录于:
医学博士外语题库考研分类
0
医学博士外语
考研
相关试题推荐
A.促胃液素B.缩胆囊素C.促胰液素D.促胃动素在消化间期能刺激胃和小肠运动的胃肠激素是
A.急性胰腺炎B.急性胆囊炎C.急性胆管炎D.急性梗阻性化脓性胆管炎Reynolds五联征常见于
A.饱餐或食油腻食物后右上腹持续性疼痛,严重有畏寒、高热B.腹痛、寒战高热和黄疸(Charcot三联征)C.腹痛、寒战高热、黄疸、休克和精神症状五联征D.突然发作的剑突下钻顶样绞痛,阵发性加重急性胆囊炎临床表现是
A、AbriefhistoryofBritishpubs.B、Beer—theBritishnationaldrink.C、VariousattemptsmadetocurbdrinkinginBritain.D、The
Twoequallybrilliantscientistsapplyforaprestigiousresearchfellowshipawardedbyatopscientificorganization.Oneiswh
"Igotcancerinmyprostrate."DetectiveAndySipowiczofthefictional15’Precinct,astoic,bigbearofaman,isclearlyi
Folkwisdomholdsthattheblindcanhearbetterthanpeoplewithsight.Scientistshaveanewreasontobelieveit.Researc
A、Settingagoodexamplefortheirchildren.B、Discipliningtheirchildren.C、Reflectingthenatureofmodern-daylife.D、Changi
I’m______passinganewlawthathelpspoorchildrengetbettermedicine.
Readingtooneselfisamodernactivitywhichwasalmostunknowntothescholarsoftheclassicalandmedievalworlds,whiledur
随机试题
IntheDirectMethod,thetargetlanguageisused______inthelanguageclassroomasameansofinstructionandcommunication.
在《中国预防与控制艾滋病中长期规划(1998-2010年)》中提出,阻断HIV经采供血途径的传播,遏制HIV在吸毒人群中迅速蔓延的势头;力争把性病的年发病增长幅度控制在15%以内。此目标实现的时间是
人工后牙宜选择硬质塑料牙或瓷牙的原因是
男,48岁。右下后牙肿胀2天,检查:右下颊侧牙龈呈半球状肿胀,红肿、光亮。扪之有波动感,牙周袋溢脓,探诊深度8mm,牙髓活力存在。该患者的诊断是()
浮脉属于何类脉象实脉属于何类脉象
下列关于直接融资的表述,错误的是()。
(1)“老字号”生意每况愈下(2)出现许多仿冒“老字号”(3)仿冒付出了沉重代价(4)一个“老字号”天下闻名(5)要求保护自己的“商标权”
某客户机使用DHCP获取IP地址等信息,其获取IP地址过程中捕获的4条报文及对第2条报文分析如下图所示。请分析其中的信息,补全内容。
在C++语言中,打开一个文件就是将这个文件与一个什么建立关联?
A、Inthehospital.B、Atwork.C、Athome.D、Inthecountryside.A推断题。女士问男士他的母亲好些没有,男士回答“她现在好多了,谢谢。她几天内就会回家。手术很成功,她很快就会康复。”问男士的母亲现
最新回复
(
0
)