Asthepaceoflifecontinuestoincrease,wearefastlosingtheartofrelaxation.Onceyouareinthehabitofrushingthroughlift,beingonthegofrommorningtillnight,itishardtoslowdown. Butrelaxationisessentialforahealthymindandbody.Stressisannaturalpartofeverydayliftandthereisnowaytoavoidit.Infact,itisnotthebadthingitisoftensupposedtobe.Acertainamountofstressisvitaltoprovidemotivationadngivepurposetolife.Itisonlywhenthestressgetsoutofcontrolthatitcanleadtopoorperformanceandillhealth. Theamountofstressapersoncanwithstanddependsverymuchontheindividual.Somepeoplearenotafraidofstress,andsuchcharactersareobviouslyprimematerialformanagerialresponsibilities.Othersloseheartatthefirstsignsofunusualdifficulties.Whenexposedtostress,inwhateverform,wereactbothchemicallyandphysically.Infactwemakechoicebetween"fight"or"flight"andinmoreprimitivedaysthechoicemadethedifferencebetweenlifeordeath.Thecriseswemeettodayareunlikelytobesoextreme,buthoweverlittlethestress,itinvolvesthesameresponse.Itiswhensuchareactionlastslong,throughcontinuedexposuretostress,thathealthbecomesendangered.Suchseriousconditionsashighbloodpressureandheartdiseasehaveestablishedlinkswithstress.Sincewecannotremovestressfromourlives(itwouldbeunwisetodosoevenifwecould),weneedtofindwaystodealwithit. Whichofthefollwingstatementsisture?
A.a.We can find some ways to avoid stress
B.b.Stress is always harmful to people
C.c.It is easy to change the hagit of keeping oneself busy with work.
D.d.Different people can withstand different amounts of stress
正确答案是D