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高考英语阅读理解模拟训练·附详解
Whydomendieearlierthanwomen?Thelatestresearchmakesitknownthatthereasoncouldbethatmen’sheartsgo
intorapiddeclinewhentheyreachmiddleage.
Thelargeststudyoftheeffectsofageingonthehearthasfoundthatwomen’slongevitymaybelinkedtothefactthattheirheartsdonotlosetheirpumpingpowerwithage.
“Wehavefoundthatthepowerofthemaleheartfallsby20-25percentbetween18and70yearsofage,”saidthehea
dofthestudy,DavidGoldspinkofLiverpoolJohnMooresUniversityintheUK.
“Withinthehearttherearemillionsofcellsthatenableittobeat.Betweentheageof20and70,one-thirdofthosecellsdieandarenotreplacedinmen,”saidGoldspink.“Thisispartoftheageingprocess.”
Whatsurprisesscientistsisthatthefemaleheartseesverylittlelossofthesecells.Ahealthy70-year-oldwoman’sheart
couldperformalmostaswellasa20-year-oldone’s.
“Thisgenderdifferencemightjustexplainwhywomenlivelongerthanmen,”saidGoldspink.Theystudiedmorethan250healthymenandwomenbetweentheagesof18and80,focusingonhealthypersonstoremovetheconfusinginfluenceofdisease.“Theteamhasyettofindwhyageingtakesagreaterlossonthemaleheart,”saidGoldspink.
Thegoodnewsisthatmencanimprovethehealthoftheirheartwithregularexercise.Goldspinkstressedthatwomenalsoneedregularexercisetopreventtheirlegmusclesbecomingsmallerandweakerastheyage.
Theunderlinedword“longevity”inthesecondparagraphprobablyrefersto“ ”.
A.health B.longlife C.ageing D.effect
Thetextmainlytalksabout .
A.men’sheartcells B.women’sageingprocess、
C.thegenderdifference D.heartsandlonglife
accordingtothetext,theUKscientistshaveknownthat .
womenhavemorecellsthanmenwhentheyareborn
womencanreplacethecellsthatenablethehearttobeat
thefemaleheartlosesfewof
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