句子翻译[求助]

leogmUID: 49023

请大家帮忙翻译以下三句话，谢谢！

A study by the National Parent-Teachers Oragnization revealed that in the average American school, eighteen negatives are identified for every positive that is pointed out .[/COLOR]


Throughout its history this nation has emphasized pubilc education as a means of transmitting democratic values, creating equality of opportunity, and preparing new generations of citizens to function [/COLOR] in society.   这句话大概意思能明白，可是怎样翻译成顺畅的中文呢？


Sociologist Charles Moscos is a leader in the movement to expend programs likes Peace Corps, Vista, and Outward Bound [/COLOR] into a system of voluntary national service.  那些是什么组织呀？

leogmUID: 49023

谢谢大家指点，感激不尽！

有谁能给出第一句话的合理翻译吗？