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高考英语一轮复习Unit2Healthyeating单元检测卷新人教必修3.doc

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Unit2HealthyeatingⅠ.阅读理解Whydomenliveashorterlifethanwomen?Thelatestresearchindicatesthatmen''slongevitymaybelinkedtothefactthattheirheartsdonotlosemuchpumpingpowerwithage.“Wehavefoundthatthepowerofthemaleheartfallsby20percent—25percentbetween20and70yearsofage,”saidtheheadofthestudy,SamanthaofLiverpoolJohnMooresUniversityintheUK.“,one-thirdofthosecellsdieandarenotreplacedinmen,”saidSamantha.“Thisispartoftheageingprocess.”-year-oldwoman'sheartcouldworkalmostasperfectlyasa20-year-oldone's.“Thisgender(性别)differencemightgivethereasonwhymenliveshorterthanwomen.”,whoaremainlyhealthypersonssoastoreducetheinfluenceofdisease.“Theteamhasyettothinkaboutwhyageingsuffersagreaterlossonthemaleheart.”—“longevity”inthesecondparagraphmeans“______”.''

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