单选题 (73) is a multimedia Internet service that allows users to traverse the Internet by moving from one document to another via links that connect them together.

【正确答案】 B
【答案解析】[分析]
WWW是这样一种多媒体因特网服务，它允许用户通过链接跨越因特网移动文件到彼此互相连接另一个位置。