共用题干 ExerciseWhether or not exercise adds to the length of life,it is common experience that a certain amount of regular exercise_______(51)health and contributes a feeling of well-being. Furthermore,exercise________(52)involves play and recreation(娱乐),and relieves nervous tension and mental fatigue in so__________(53),is not only pleasant but beneficial.How much and what kind of exercise one should_________(54)merits careful consideration.The grow- ing child and the normal young man and young woman thrill(兴奋) with strenuous(剧烈的)sports. Theyfatigue to the__________(55)of exhaustion but recover promptly with a period of rest.But not so with thoseof middle age and beyond. For them moderation is_________(56)vital importance.Just how much exercise a person of a given age can safely take is a question hard to__________(57).In- dividual variability is too great to permit generalization.A game of tennis may be perfectly safe for one per- son of forty but folly(愚蠢)for another. The safe_________(58)for exercise depends on the condition of the heart,the condition of the muscles,the_________(59)of exercise,and the regularity with which it is taken. Two general suggestions,however,will__________(60)as sound advice for anyone.The first is thatthe___________(61)of the heart and general health should be determined periodically by careful,thorough physical examinations. The other is that exercise should be kept__________(62)the point of physical exhaustion.What type of exercise one should___________( 63)depends upon one's physical condition.Young people can safely enjoy competitive sports,but most older persons do better to limit themselves to less strenuous ___________(64).Walking,swimming and skating are among the sports that one can enjoy and safely ___________(65)in throughout life.Regularity is important if one is to get the most enjoyment and benefit out of exercise. _________(51)
A.damages B.enjoys C.provides D.improves正确答案D
