首页
登录
职称英语
We all have offensive breath at one time or another. In most eases offensive
We all have offensive breath at one time or another. In most eases offensive
游客
2024-10-10
31
管理
问题
We all have offensive breath at one time or another. In most eases 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 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 sulfide producing bacteria gains 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, file 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. [br] Which of the following is mentioned as one of the causes of bad breath?
选项
A、Tooth trouble.
B、Sulfur-rich food.
C、Too much exercise.
D、Mental strain.
答案
D
解析
细节题。可在第五段中找到本题答案,即除了酒精、饥饿、运动时用嘴呼吸及过多谈话外,精神紧张也同样能产生口臭,所以[D]是正确的。而[A]”牙疼”、[B]“富含硫的食物”在文章中未提到;[C]”运动过量”与文章中提到的运动时用嘴呼吸能产生口干不符,这三项均可排除。
转载请注明原文地址:https://tihaiku.com/zcyy/3794635.html
相关试题推荐
Weallhaveoffensivebreathatonetimeoranother.Inmosteasesoffensive
Weallhaveoffensivebreathatonetimeoranother.Inmosteasesoffensive
Weallhaveoffensivebreathatonetimeoranother.Inmosteasesoffensive
Weallhaveoffensivebreathatonetimeoranother.Inmosteasesoffensive
Weallhaveoffensivebreathatonetimeoranother.Inmosteasesoffensive
Peter______hisbreathinwonderwhenhesawtheChristmastreeinthesitting
Steven’sclose______tohisbrothermadepeoplemistakethemforoneanother.A、
Steven’s______closetohisbrothermadepeoplemistakethemforoneanother.A、
随机试题
Whenyoureadbooks,youhadbettermakemarks______youhavequestions.A、where
Teamworkplaysanimportantpartinourdailylifeandwork,butsometimesp
A.approachB.attainC.deficit-orientedD.eagerE.failF.f
工程变更引起分部分项工程项目发生变化的,已标价工程量清单中有适用于变更工程项目的
问诊的内容
肝癌按组织细胞分型,最常见的类型是A.混合型 B.胆管细胞型 C.肝细胞型
期货公司实际控制人不得进行()行为。A.侵占期货公司资产 B.滥用职权
A.安全保障权 B.公平交易权 C.自主选择权 D.获得赔偿权乙药品零售企
吗啡可用于下列哪些疾病()A.癌性剧痛 B.急性锐痛 C.心肌梗死性心
男童,2岁,右侧完全性腭裂拟行腭裂修复术。腭裂术后出现腭瘘,最常见的部位在 A
最新回复
(
0
)