Smokingistheworstthingyoucandoforyourhealth.Fortunatelyit’snevertoolatetogetthebenefitsofquitting.Ifyou’vetriedtoquitbeforeandfailedit’stimetomakeupyourmindandtryagain.Smokingisresponsibleforo

　　Smokingistheworstthingyoucandoforyourhealth.Fortunatelyit’snevertoolatetogetthebenefitsofquitting.Ifyou’vetriedtoquitbeforeandfailedit’stimetomakeupyourmindandtryagain.

　　Smokingisresponsibleforoneofeveryfivedeaths.Thatincludes29%ofallcancerdeaths87%ofalllungcancerdeathsandnearly20%ofalldeathsarefromcardiovasculardisease.Butlongbeforesmokingkillsyouitagesyou.Youcanseethatsmokingacceleratesthedryingandwrinklingoftheskin.Buttherearefewerobviouseffectsaswell.Indeedsmokingtakesyearsawayfromyourlife.Nearlyhalfofallchronicsmokersdieanaverageof20to25yearsbeforetheirtime.

　　Besidesanearlydeathfromcancerorheartdiseasesmokingcancauselungdisorders.Peoplewhosmokeoverapackadayhavealmostthreetimestheriskofcontractingpneumonia(肺炎)thanthatofnon­smokers.Byloweringlevelsofestrogen(雌性激素)inmenandwomensmokingspeedsboneless.Ifawomansmokesapackofcigaretteseverydayshewillentermenopause(更年期)with5%to10%lessbonemassthananon­smoker.

　　Thegoodnewsisthatnomatterwhatyourageisorhowlongyou’vesmokedyou’lllivelongerifyouquittoday.TheCoronaryArterySurgeryStudyexaminednearly2000long­termsmokersovertheageof54.Thosewhoquithadsignificantlylowerdeathratessixyearslaterthanthosewhodidn’t.Eventheoldestex­smokershadahighersurvivalrate.

　　Notonlywillyoulivelongerifyouquitbutyou’llfeelbetterbreatheeasierandfindthatyouhavemoreenergy.You’llhavefewerrespiratoryinfectionsheadachesandstomachaches.What’smoreyou’llsavemoney.Yourclothesandbreathwon’tsmellunpleasantanylonger.Andyourhabitwon’tannoyorthreatenthehealthofthepeoplewholiveandworkwithyou.

　　33．Accordingtothepassagethepercentageofdeathsduetosmokingis________.

　　A．20%　B．25% C．29% D．87%

　　34．AllofthefollowingmethodsareusedinthepassageEXCEPT________.

　　A．givingexamples

　　B．mentioningfamoussayings

　　C．comparing

　　D．listingnumbers

　　35．WhatdoweknowfromtheCoronaryArterySurgeryStudy?

　　A．Itexaminedabout2000smokerswhoallquitsmokingfinally.