吉林省四平市2014高考英语阅读理解巩固全程训练（24）及答案[社会生活型阅读理解(一)]-----(二)Lifeistobeenjoyed.There'snopointingivingupsomethingyouenjoyunlessyougetsomethingbackthat'sevenbetter.Whenpeopleeatmorehealthfully,exercise,quitsmoking,andmanagestressbetter,theyfindthattheyfeelsomuchbetterthatitreconstructsthereasonformakingthesechangesfromfearofdyingtojoyofliving.Thelateststudiesshowthatwhenyouexerciseandeatright：YOURBRAINreceivesmorebloodflowandoxygen,soyoubecomesmarter,thinkmoreclearly,havemoreenergy,andneedlesssleep.Twostudiesshowedthatjustwalkingforthreehoursperweekforonlythreemonthscausedsomanynewneurons(神经细胞)togrowthatitactuallyincreasedthesizeofpeople'sbrains!YOURFACEreceivesmorebloodflow,soyour_skin_glowsmoreandwrinklesless.Youlookyoungerandmoreattractive.Incontrast,anunhealthydiet,chronicemotionalstressandsmokingreducebloodflowtoyourfacesoyouagemorequickly.Smokingacceleratesagingbecausenicotinecausesyourarteries(动脉)tonarrowdown,whichdecreasesbloodflowtoyourfaceandmakesitwrinkleearlier.Thisiswhysmokerslookyearsolderthantheyreallyare.YOURGENESchange.InMay,astudywaspublishedintheProceedingsoftheNationalAcademyofSciencesshowingthatchangingyourlifestylechangesyourgenes.YOURTELOMERES(染色体端粒)getlonger.Telomeresaretheendsofourchromosomes(染色体)thatcontrolhowlongwelive.Astelomeresbecomeshorter,thencellsagemorequickly,thusshorteningourlives.Besides,oneofthemostinterestingfindingsinthestudywasthatthemothers'awarenessofstresswasmoreimportantthanwhatwasreallyoccurringintheirlives.Theresearchersgavethewomenaquestionnaireandaskedthemtorateonathreepointscalehowstressedtheyfelteachday,andhowoutofcontroltheirlivesfelttothem.Thewomenwhowereawarethattheywereunderheavystresshadsignificantlyshortenedanddamagedtelomerescomparedwiththosewhofeltmorerelaxed.Onthecontrary,someofthewomenwhofeltrelaxeddespiteraisingadisabledchildhadmorenormalappearingtelomeres.Inotherwords,ifyoufeelstressed,youarestressed;ifyoufeelfine,youarefine.1．Whichofthefollowingaregoodforlengtheningone'slife,accordingtothepassage?①eat