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2019-2020年高考英语一轮复习Unit2Healthyeating单元检测卷新人教版必修Ⅰ.阅读理解WhydomenliveashorterlifethanwomenThelatestresearchindicatesthatmensheartsgoingintoarapiddeclinewhentheyreachmiddleagecouldbethecause.Theresearchofageingonthehearthasshownthatwomenslongevitymaybelinkedtothefactthattheirheartsdonotlosemuchpumpingpowerwithage.“Wehavefoundthatthepowerofthemaleheartfallsby20percent—25percentbetween20and70yearsofage”saidtheheadofthestudySamanthaofLiverpoolJohnMooresUniversityintheUK.“Withinthehearttherearemillionsofcellswhichmakeitbeat.Betweentheagesof20and70one-thirdofthosecellsdieandarenotreplacedinmen”saidSamantha.“Thisispartoftheageingprocess.”Whatamazesscientistsisthatthefemaleheartsuffersverylittlelossofthesecells.Ahealthy70-year-oldwomansheartcouldworkalmostasperfectlyasa20-year-oldones.“Thisgender性别differencemight...。