[解析]
(1)A 推理题,由第一段How to protect children Web fans from unsuitable material on﹣line while encouraging them to use the Internet has long been discussed in the U.S可以推出本文讲述因特网对孩子既有利也有害,并告诉父母应该如何保护他们的孩子远离那些不适合孩子的网络资料.所以选A
(2)D 细节理解题.从第三段倒数第二句"…and the best thing parents can do is to talk to their kids and let them know what is OK or not OK to see or do on the Internet"可知父母能够做的最好的事情是跟孩子谈一下,让他们知道在网上做什么是合适的和不合适的.故选D.
(3)B 推理判断题.从第二段最后一句"Kids have to be on﹣line.If we tell our kids they can't have access to the Internet,we're cutting them off from their future."可知,如果孩子不能上网,我们就剥夺了他们的前程.故选B.
(4)D 推理判断题.从第二段首句"For some parents,the Internet can seem like a jungle,filled with danger for their children."和第三段"A certain softwarecontains only sites that have been selected as safe.The most popular way to limit access would be to use what is known as a'content screener(过滤器)'."可以概括出网络上存在一些不适合孩子们浏览的网站.故选D.