译林版高中英语选择性必修第二册精品课件 UNIT 3 Fit for life UNIT 3单元提能强化练.ppt

UNIT3FitforlifeUNIT3单元提能强化练

ⅠⅡⅢⅣⅠ.阅读理解AAnewreportconnectseatingeggstoanincreasedriskofheartdisease.Theresultsfollowseveralearlierstudiesthatfoundeatingeggswasgenerallyhealthy.Thestudycollectsdatafromsixotherearlierstudies.Itshowsa6percentincreasedriskofheartdiseasewhenthenumberofeggsapersonateeachdayincreasedbyhalfanegg.NorrinaAllen,anassociateprofessoratNorthwesternUniversitysaidthat,intheUnitedStates,eggsaregenerallyoneofthetopsourcesofcholesterol(胆固醇)inaperson’sdailyfood.Peoplewithhigherlevelsofcholesterolintheir

ⅠⅡⅢⅣfoodareatincreasedriskofthedevelopmentofheartdiseaselaterinlife.However,Allenaddedthatshewouldnotsaythateggsarecompletelyunhealthy.“I’mnotsayingthatpeopleshouldtakethemcompletelyoutoftheirfood,”shesaid.“I’mjustsuggestingthatpeopleeattheminaproperamount.”Someexpertsbelievethenewstudydoesnotprovethateggsarecausingheartdisease.“Cholesterol’sroleinthedevelopmentofheartdiseasehasbeendiscussedformorethan30years,”saidBruemmer,anassociateprofessorofmedicineattheUniversityofPittsburghMedicalCenter.“Thisstudydoeshaveclearshortcomings,includingself-reportingatasingletimepoint,”headded.

ⅠⅡⅢⅣBruemmersaid,“Eggsinmoderation(适度)areprobablyacceptablefromanutritionalstandpoint.”“Moderation,”headded,“islessthanoneeggaday,includingeggsinfoodssuchasbread.”HollyAndersen,adoctorattheNewYork-Presbyterian/WeillCornellMedicalCenter,agreesthatthestudyhas“realshortcomings”.OneproblemAndersenhaswiththestudyisthatalotoftheegg-eatingpeopleinthestudyalsoappearedtobeeatingmuchmeatandprocessedmeat.“Ifyou’retakingalotofprocessedmeat,itdoesn’tmatterhowmanyeggsyou’reeating,”Andersensaid.

ⅠⅡⅢⅣAlso,Andersensaid,“Thestudycanonlyshowthereisarelationbetweeneatingeggsandheartdisease.Butitcannotprovee