首页
登录
职称英语
We all have offensive breath at one time of another. In most cases, offensive
We all have offensive breath at one time of another. In most cases, offensive
游客
2025-05-09
18
管理
问题
We all have offensive breath at one time of another. In most cases, offensive breath emanates from bacteria in the mouth, although there are other more surprising causes.
Until a few years ago, what 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 sulfide-producing bacteria gain the upper hand, producing classic "morning breath".
Alcohol, hunger, long time 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 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 mouth- washes 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、Toothache
B、Sulfur-rich food.
C、Mental strain.
D、Too much exercise.
答案
C
解析
文中第3段列举了几个引起offensive breath的原因,如hunger、alcohol等,随后又指出stress也会引起offensive breath,故选项C正确。文中只是说运动期间breathing through the mouth通过嘴巴呼吸可能引起界味,并不是说过量运动所导致的,故选项D不正确。
转载请注明原文地址:https://tihaiku.com/zcyy/4069349.html
相关试题推荐
Weallhaveoffensivebreathatonetimeofanother.Inmostcases,offensive
Weallhaveoffensivebreathatonetimeofanother.Inmostcases,offensive
Sleepis(controlled)by(thebrain)and(associatedby)characteristic(breathi
Psychologistshaveerrantlymountedanoffensiveagainstwhattheydescribeasn
ThatLydiawasableto______thesituationseemedtoalloweveryonetobreathe
Psychologistshaverecentlymountedanoffensiveagainstwhattheydescribeasn
Inthelastcenturyandahalf,scientificdevelopmenthasbeenbreathtaking,bu
Wheneverworkisbeingdone,energy______fromoneformintoanother.A、converts
Mostvisitorstothatpeninsulafindthebreathtakingscenery,whichfeaturesth
Accordingtothelatestreport,consumerconfidence______abreathtaking15poin
随机试题
Thewordsusedbythespeakermay______unfavorablereactionsinthelistenerw
2015年四季度某省进入市场登记求职的各类人员共有65.26万人,全省共有约2.
A.His B.Trp C.Ser D.Gly
学校文化建设有多个落脚点,其中,课堂教学是学校文化建设的主渠道。在课堂教学中,教
竹沥油的干馏温度宜在A.200~250℃ B.250~300℃ C.300~
下列不属于建设项目内部控制基本要素的是()。A:外部环境 B:风险评估 C
维拉帕米作为首选药常用于治疗A、阵发性室上性心动过速 B、心房纤颤
干扰配位滴定和氧化还原滴定的是A.硬脂酸镁 B.淀粉 C.滑石粉 D.水分
5.7线路故障处置 5.7.1线路故障跳闸后,值班监控员、厂站运行值
★★下列律师的哪一行为不符合律师执业行为规范的要求?() A.王律师根据委托
最新回复
(
0
)