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
A、Brush your teeth right before you go to bed in the evening. B、Have as few of your teeth pulled out as possible. C、Have your te
A、Brush your teeth right before you go to bed in the evening. B、Have as few of your teeth pulled out as possible. C、Have your te
admin
2010-02-20
82
问题
How many teeth have you had filled in the past two years? If you follow the advice of Dr. Faustick ’you may be able to reduce the number of your visits to a dentist. Dr. Faustick conducted a twoyear survey to find out how to prevent or reduce dental decay. 946 students took part in an experiment. 523 students cleaned their teeth within ten minutes of eating when possible they used a tooth brush, when this was impossible they washed their mouth thoroughly with water. The remaining 423 students merely cleaned their teeth when they went to bed and when they got up in the morning. All the students had their teeth X rayed at the end of the first and second years. At the end of the first year, the night and morning group had three times as many decayed teeth as the dean after each meal group. At the end of the second year the latter group had 53 percent fewer decayed teeth than the former group. Dr. Fausstick has cleaned his teeth after meal for thirteen years and has not had a single decayed tooth. He pointed out that sugar is a major agent in dental decay. Particularly the sugar in sweets, cakes, and soft drinks. Ideally you should keep a tooth brush in your pocket and use it immediately after you have finished eating. When this is impractical you can at least make sure that you have a drink of water and let the water through your teeth to force out any particles of food. 7 of out 10 people loose at least half of their teeth by the time they are fifty. Many have a complete set of false teeth by that time. In any case neither toothache nor a visit to a dentist is very pleas ant. So it is worthwhile making an effort to keep you own teeth as long as possible. The main preventative agent is simply water.
选项
A、Brush your teeth right before you go to bed in the evening.
B、Have as few of your teeth pulled out as possible.
C、Have your teeth Xrayed at regular intervals.
D、Clean your teeth shortly after eating.
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/Myt7777K
0
大学英语四级
相关试题推荐
A、Shedidn’tneedherparents’moneyanymore.B、Shebeginstogetonwellwithherparents.C、Shealwaysstayedwithherparents
Whatisthemainreasonfortheworkerstoacquirefurthereducation?What’stheauthor’sattitudetowardthiskindofeducatio
_______________(另一方面),manypoorpeasantsarestilllivinginpovertyforshortageofthemeansofproduction.
A、Talkaboutasubjectinclass.B、Listentoaradioprogram.C、Writeanarticle.D、Readsomething.BM:Isthereanyhomeworkfo
Thepassageintroducessomekindsoftaxesandthefactorstojudgeatax.Somestatesusetheestatetaxinadditiontoinheri
Thepassageintroducessomekindsoftaxesandthefactorstojudgeatax.Itisthefederalgovernmentthatcollectstheprope
Supposeyouarestudyingatauniversitywhichoffersscholarshipstothosestudentswhoseaveragemarkisover90.Yourrecord
A、Themandeservedtheaward.B、Thewomanhelpedthemansucceed.C、Themanisthankfultothewomanforherassistance.D、Thew
A、Tomisusuallytalkative.B、Tomhasaverybadtemper.C、Tomisdislikedbyhiscolleagues.D、Tomhasdozensofthingstoatte
A、Thecolorisanythingbutattractive.B、Thedesignissecondarytocolorinimportance.C、ItistypicallyChinese.D、Itcannot
随机试题
北京西城钢窗厂研制的一种防盗窗,申请并获得专利权,在市场上销路较好。该厂发现山东省威海市C区某厂生产、销售的钢窗采用了其专利技术,但未经该厂许可并支付报酬。西城钢窗厂欲通过诉讼制止威海市C区某厂的侵权行为,应到以下所列举的哪个法院提起诉讼?()
施工安全管理程序不包括()。
土坝坝体灌浆中,造孔深度应大于隐患深度( )。如副排孔处无隐患,孔深约为相应主排吼深的1/3。
某上市公司的下列人员中,不得将其持有的该公司的股票在买入后6个月内卖出,或者在卖出后6个月内又买入的有()。Ⅰ.董事Ⅱ.监事Ⅲ.财务负责人Ⅳ.总经理
《资本论》中有这样的表述:“对于上衣来说,无论是裁缝穿还是顾客穿,都是一样的”,主要因为无论谁穿:
电影是一种虚拟艺术,历史片并不是书写历史。电影创作必须充分发挥艺术想象力,并进行精心选择与剪裁。电影作品是艺术而不是学术,我们应该给予其______的宽容,不能过分______,用学术性的眼光求全责备。填入划横线部分最恰当的一项是:
诈骗罪是指以非法占有为目的,用虚构事实或者隐瞒真相的方法,骗取数额较大的公私财物的行为。根据上述定义,下列可以构成诈骗罪的是()。
简述维也纳和会的内容。(南京大学2006年世界史真题)
“明代医药家李时珍”是()。
在某个事件过程中定义的变量是( )。
最新回复
(
0
)