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、It has to be removed in time by a dentist. B、It is a rare oral disease among old people. C、It contains many nerves and blood v
A、It has to be removed in time by a dentist. B、It is a rare oral disease among old people. C、It contains many nerves and blood v
admin
2019-03-12
11
问题
Take care of your teeth and your teeth will take care of you. Your teeth are a living part of your body. They have nerves and blood vessels. Diseased teeth can cause pain, die and fall out. Plaque is the main enemy of healthy teeth. Everyone has plaqu
选项
A、It has to be removed in time by a dentist.
B、It is a rare oral disease among old people.
C、It contains many nerves and blood vessels.
D、It is a sticky and colorless film on the teeth.
答案
D
解析
短文中提到,牙斑是牙齿表面一层粘粘的无色层,故答案为D。
转载请注明原文地址:https://kaotiyun.com/show/qZ47777K
0
大学英语四级
相关试题推荐
Oneinsix.Believeitornot,that’sthenumberofAmericanswhostrugglewithhunger.Tomaketomorrowalittlebetter,Feedin
Whenretailerswanttoenticecustomerstobuyaparticularproduct,theytypicallyofferitatadiscount.Accordingtoanews
A、TVshows.B、Oldpeople.C、Celebrities.D、Professionaldancers.B注意题干线索词usedto。根据录音中的BallroomdancingintheUKusedtobesee
Thepredictabilityofourmortalityratesissomethingthathaslongpuzzledsocialscientists.Afterall,thereisnonaturalr
Whatyoucanrememberfromage3mayhelpimproveaspectsofyourlifefarintoadulthood.Childrenwhohavetheabilitytoreca
TodayIwouldliketotellyouabouttheeffectsofoldageonhealth.Actuallytodayalotof【C1】______havetakenplaceinthe
Teachingchildrentoreadwellfromthestartisthemostimportanttaskofelementaryschools.Butrelyingoneducatorstoappr
Forthispart,youareallowed30minutestowriteashortessayentitledCollegeGraduateBoombasedonthestatisticsprovided
传统中医(traditionalChinesemedicine)可以不借助任何仪器给病人治病,堪称奇迹。
A、Tomakepreparationsforanewpublication.B、Tolearnhowcouplesspendtheirweekends.C、Toknowhowhouseworkisshared.D、
随机试题
下列药物中最容易引起再生障碍性贫血的是
A.ETECB.EPECC.EIECD.EHECE.EAggEC可引起志贺样腹泻的是
某写字楼项目于2009年3月1日领取了施工许可证,若因故未能按期开工,应向发证机关申请延期,最多可延期()次。
混凝土拌合物的和易性是一项综合的技术性质,它包括( )等几方面的含义。
股权投资基金向目标公司投资后,其他收购方购买股权投资基金所持目标公司的全部或部分股权,使股权投资基金实现退出的退出方式是()。
世界性的三大宗教为()。
甲报考人民警察执法勤务类职位填报个人信息时,故意将入党时间提前到高中阶段。后在考察审核过程中被发现。甲的行为明显不符合人民警察核心价值观中的:
治安监督检查权是()依法对应负治安责任的社会团体、组织及个人实施治安行政管理的权力之一。
【B1】【B10】
A、Hidethebearintheirhouses.B、Setupreservationzoneforthebear.C、Avoidspeakingofseeingthebear.D、Preventstranger
最新回复
(
0
)