Heartdiseaseisthenumberonekiller,worldwide,ofmenandwome...
問題詳情：Heartdiseaseisthenumberonekiller,worldwide,ofmenandwomenovertheageof60,butpeopleofallagesdieofheartattackseachyear.AndwhiledeathrateshavedeclinedintheU.S.andmanywesternEuropeancountries,theyar...