Badteethcanbepainful--andworse-查字典问答网
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  Badteethcanbepainful--andworse.Theycanevenbedeadly.Infections(感染)ofthegums(牙龈)andtheteethcancausebacteria(细菌)togointothebloodsystem.Thosebacteriacanincreasethechanceofaheartattackandworse

  Badteethcanbepainful--andworse.Theycanevenbedeadly.Infections(感染)ofthegums(牙龈)andtheteethcancausebacteria(细菌)togointothebloodsystem.Thosebacteriacanincreasethechanceofaheartattackandworsentheeffectsofotherdiseases.Andadultsarenottheonlyonesatrisk.

  Forexamplein2007doctorsintheWashingtonareasaidaboydiedwhenatoothinfectionspreadtohisbrain.Theysaiditmighthavebeenpreventedhadhereceivedthedentalcare(牙齿保健)heneeded.Hewastwelveyearsold.

  ExpertsattheNationalInstitutesofHealthsaygooddentalcarestartsatbirth.Breastmilktheysayisthebestfoodforthehealthydevelopmentofteeth.Breastmilkcanhelpslowthegrowthofbacteriaandacidproductioninthemouth.

  Butdentistssayababy'sgumsandearlyteethshouldbecleanedaftereachfeeding.Useaclothwithalittlewarmwater.Dothesameifababyisfedwithabottle.Expertssayifyoudecidetoputyourbabytosleepwithabottleonlygivethechildwater.

  Whenbabyteethbegintoappearyoucancleanthemwithawettoothbrush.Dentistssayitisimportanttofindsofttoothbrushesmadeespeciallyforbabiesandtousethemverygently.

  Theuseoffluoride(氟化物)toprotectteethiscommoninmanypartsoftheworld.Forexampleitisoftenaddedtodrinkingwatersupplies.Thefluoridemixeswithenamel(珐琅质)thehardsurfaceonteethtohelppreventholesfromforming.

  【小题1】Whichofthefollowingcanbeusedasthetitleofthepassage?

  A.ConcernsforHealthyTeethoftheYoungB.CausesofTeethProblemC.ImportanceofHealthyTeethofAllD.SolutionstoTeethProblem【小题2】What'sthemainideaofparagraph4and5?A.Howtodevelopbabies'teeth.B.Howtokeepbabies'teethcleanC.Whytoprotectbabies'teethD.Whytokeepbabies'teethclean【小题3】Thepassageindicatesthat______.A.EnamelismostwidelyusedtoprotectteethintheworldB.Breastmilkcancurebabies'badteethC.BadteethmayaffectthehealthofadultsandtheyoungD.Babies'teethshould

1回答
2020-04-30 07:13
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毛军捷

  【小题1】A

  【小题2】B

  【小题3】C

  【小题4】A

  解析

2020-04-30 07:14:49

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