Smokingisharmful.Butassoonasyouquitthehabit,everythingw...
问题详情：Smokingisharmful.Butassoonasyouquitthehabit,everythingwillbeOK,right?Wrong.Newresearchhasfoundthatevenifyougiveupsmoking,thedamageithasdonetoyourgenes(基因)willstaythereforamuchlongertime.Inth...