4. An invisible border divides those arguing for computers in the classroom on the behalf of students" career prospects and those arguing for computers in the classroom for broader reasons of radical education reform.
[参考译文] 有些人为了学生的就业前景为教室里放置电脑而辩，有些人为教育的彻 底改革中更为广泛的理由为教室里放置电脑而辩，这两群人之间有一条 无形的界线。
5. Rather, we have a certain conception of the American citizen, a character who is incomplete if he cannot competently access how his livelihood and happiness are affected by things outside of himself.
[参考译文] 我们更应该具有的是作为美国公民的某种观念，这个公民人物如果不能 很恰当地认识到自己的生存和幸福是怎样受到自身之外的事物的影响， 那么其公民特征就是不完整的。
