57．The examples of Virtual Vineyards, Amazon.com, and other pioneers show that a Web site selling the right kind of products with the right mix of interactivity, hospitality, and security will attract online customers.

　　[参考译文]像Virtual Vineyards，Amazon.com这样的先驱网站表明，一个将交互性、热情服务和安全性合理结合以销售同类商品的网址是可以吸引网上客户注意的。

　　58．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。

　　59．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如何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。

　　60．Besides, this is unlikely to produce the needed number of every kind of professional in a country as large as ours and where the economy is spread over so many states and involves so many international corporations.

　　[参考译文]另外，在我们这么一个大国里，经济延展到这么多的州、涉及到这么多的国际公司，因而要按照数量培养出所需的各类专业人员是不大可能的。