57.经常，有时　 at times

56.进行调研　 conduct a survey of

55.有同等接近……　 have equal access to

54.属于　 belong to

53.在世界范围内普遍 spread across the world

52.参加三项竞赛　 compete in three events

51.获得更大的自信心

gain greater self-confidence

50.参加物奥会

participate in the Special Olympics

49.改善生活质量 improve the quality of life

48.给…以尊敬和尊treat…with dignity and respect