单选题 A Web browser is simply a terminal emulator, designed to display text on a screen. The two essential differences between an ordinary terminal emulator and a Web browser are that the browser knows how to deal with ______, and that it has a mechanism for ______ graphical files. Display text, display graphics, and ______ hyperlinks--there's 99 percent of the ______ value. That's not to say that the manufacturers didn't go all-out to attach a hyperactive efflorescence of useless capabilities onto their browsers. Remember when media channels in the browser were a big deal, instead of the clutter you can't wait to delete from your favorites of bookmarks menu? Remember when client-side Java applets were supposed to become the preferred ______ for application development? Remember frames and all their nasty side effects?

【正确答案】 C

【答案解析】一个网页浏览器可以简单地看成一个终端仿真程序，它用来在屏幕上显示文本。一个普通的终端仿真程序和一个网页浏览器之间的两个最本质区别是，浏览器知道如何处理超链接(hyperlinks)，并且它有显示(displaying)图形文件的机制。显示图片、文本、穿梭于(navigate，航行)超链接之间——这就是网页浏览器(Web browser)99%的价值所在。但并不是说各生产商不会到处去寻求一个花哨无用的功能附加到他们的浏览器里。曾记否，当浏览器中的媒体信息流量很大时，你如果不及时从你的书签菜单项中删除你喜欢的网页时只会带来混乱的结果?还记得什么时候客户端的Java小程序曾被认为是应用开发平台(platform)的首选吗?还记得框架以及它们所有乱七八糟的负面效应吗?