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、He has had thirteen decayed teeth. B、He doesn’t have a single decayed tooth. C、He has fewer decayed teeth than other people of
A、He has had thirteen decayed teeth. B、He doesn’t have a single decayed tooth. C、He has fewer decayed teeth than other people of
admin
2016-04-03
59
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 two-year survey to find out how to prevent or reduce dental decay. 946 students took part in the experiment. 523 students cleaned their teeth within ten minutes of eating. When possible, they used a toothbrush: 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 clean-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. Faustick has cleaned his teeth after every 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 toothbrush 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 out of 10 people lose at least half 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 pleasant. So it is worthwhile making an effort to keep your own teeth as long as possible. The main preventative agent is simply water.
19. According to the passage, what type of food or drink is most likely to cause dental decay?
20. What does the passage tell us about the condition of Dr. Faustick’s teeth?
21. What does Dr. Faustick suggest to prevent dental decay?
选项
A、He has had thirteen decayed teeth.
B、He doesn’t have a single decayed tooth.
C、He has fewer decayed teeth than other people of his age.
D、He never had a single tooth pulled out before he was fifty.
答案
B
解析
短文提到,Dr.Faustick没有一颗蛀牙(has not had a single decayed tooth)。由此可知选B。A属于干扰项,录音是说他13年来每顿饭后都刷牙,并不是说他已经有13颗蛀牙。
转载请注明原文地址:https://kaotiyun.com/show/NhG7777K
0
大学英语六级
相关试题推荐
A、Itlastedforfourweeks.B、ItstartedfromPittsburg.C、ItendedinMongolia.D、Ittookdifferenttransportationtools.C
March17thisStPatrick’sday,acelebrationofallthingsIrish—andofonethinginparticular.AroundIrelandandallover
Organisedvolunteeringandworkexperiencehaslongbeenavitalcompaniontouniversitydegreecourses.Usuallyitislefttoe
A、Themancouldn’tfindaparkinglot.B、It’shardtofindaplacetoleavethecar.C、Thewomanwasupsetduetohislatearriv
Encouragementandpraisecancomeinmanyforms,andsomewaysarebetterforchilddevelopmentthanothers.Researchersatthe
Encouragementandpraisecancomeinmanyforms,andsomewaysarebetterforchilddevelopmentthanothers.Researchersatthe
Nottoomanydecadesagoitseemed"obvious"bothtothegeneralpublicandtosociologiststhatmodernsocietyhaschangedpeop
A、Themeaningoffacialexpressionsdependsonsituations.B、Facialexpressionscancausemisunderstandingacrossculture.C、Peo
Telecommunicationsisjustoneofthemeansbywhichpeoplecommunicateand,assuch,weneedtolookattelecommunicationsand
Forgetmilkydrinks,hotwaterbottlesorcurlingupwithagoodbook—therealsecrettoagoodnight’ssleepmaybewhereyous
随机试题
可使肥厚型梗阻性心肌病患者心脏杂音减弱的药物是
不能用金属容器盛放,且组织固定后也不要用金属镊夹取的固定液是
下列方剂中,功效益气健脾,固冲摄血的是()。
采煤工作面发生煤与瓦斯突出事故后,应派2个小队分别从进风侧和回风侧进入事故地点救人。如果只有1个小队,应从采煤工作面()进入救人。
甲女因家庭经济状况不佳,为了赚取生活费,除做人体模特、人体彩绘艺术广告的生意外,还全裸在一个硕大的玻璃鱼缸里做成美人鱼的造型让各路媒体拍照或摄像。乙公司从网上下载了丙拍摄的美人鱼照片进行了精美制作,文字说明为甲女,放在自己公司的宣传橱窗里,引起众多客户驻足
ThebiggestproblemfacingChileasitpromotesitselfasatouristdestinationtobereckonedwith,isthatitisattheendof
以下叙述中错误的是()。
下列结构中属于线性结构链式存储的是
It’swidelyagreedthatgirlsgenerallystarttalkingearlierthanboys,andusemorecomplexvocabulary.Whenthey(1)______sch
Thismethodwasnever___________(被利用过).
最新回复
(
0
)