职称英语卫生类A级新增文章阅读理解(含练习解析及译文).doc

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1、SomePeopleDoNotTasteSaltLikeOthersLow—saltfoodsmaybeharderforsomepeopletolikethanothers，accordingtoastudybyaPennStateCollegeofAgriculturalScienceslfoodscientist．Theresearchindicatesthatgeneticfactorsinfluencesomeofthedifferenceinthelevelsofsaltweliketoeat．Thoseconclusionsareimportantbecauser

2、ecent，well—publicizedeffortstoreducethesaltcontentinfood2haveleftmanypeoplestrugglingtoacceptfarethatsimplydoesnottasteasgoodtothemasitdoestoothers3，pointedoutJohnHayes，assistantprofessoroffoodscience，whowasleadinvestigator40nthestudy．DietshighinsaltCanincreasetheriskofhighbloodpressureandst

3、roke．Thatiswhypublichealthexpertsandfoodcompaniesareworkingtogetheronwaystohelpconsumerslowersaltintakethroughfoodsthatareenjoyabletoeat．Thisstudyincreasesunderstandingofsaltpreferenceandconsumption．Theresearchinvolved87carefullyscreenedparticipantswhosampledsaltyfoodssuchassoupandchips，onmu

4、ltipleoccasions，spreadoutoverweeks5．Testsubjectswere45：menand42women,reportedlyhealthy，ranginginagefrom20t040years．Thesamplewascomposedofindividualswhowerenotactivelymodifyingtheirdietaryintakeanddidnotsmokecigarettes．Theyratedtheintensityoftasteonacommonlyusedscientificscale，rangingfrombare

5、lydetectabletostrongestsensationofanykind．“Mostofuslikethetasteofsalt．However，someindividualseatmoresalt，bothbecausetheylikethetasteofsaltinessmore，andalsobecauseitisneededtoblockotherunpleasanttastesinfood,”saidHayes.“Supertasters,peoplewhoexperiencetastesmoreintensely,consumemoresaltthanno

6、ntastersdo.Snackfoodshavesaltinessastheirprimaryflavor,andatleastforthesefoods,moreisbetter,sothesupertastersseemtolikethemmore.”However,supertastersalsoneedhigherlevelsofsalttoblockunpleasantbittertastesinfoodssuchascheese，Hayesnoted．“Forexample，cheeseisawonderfulblendofdairyflavorsfromferm

7、entedmilk，butalsobittertastesfromripeningthatareblockedbysalt，”hesaid．“Asupertasterfindslow-saltcheeseunpleasantbecausethebitternessistoopronounced6．”Hayescitedresearchdonemorethan75yearsagobyachemistnamedFoxandageneticistnamedBlakeslee，showingthat