●The web is an information space.Human beings have a lot of mental machinery for manipulating,imaginin9,and finding their way in spaces.URIs are the (1)in that space.
Unlike web data formats,where HTML is an important one,but not the only one,and web pmto- cols,where HTTP has a similar status,there is only one Web (2)technology:URIs. Uniform Resource Identifiers(URIs,aka URLs)are short strings that (3)resources in the web: documents,images,downloadable files,services,electronic mailboxes,and other resources.They make resources(4)under a variety of naming schemes and(5)methods such as HTTP,FrP,and Interact mail addressable in the same simple way.They reduce the tedium of”log in to this server.then issue thi{ magic command…”down to a single click.
It is an extensible technology:there are a number of existing addressing schemes,and more may be incorporated over time.
(1)A.identifiers
B.strings
C.machinesD points
(2)A.accessing
B.naming/addressing
C.communicatin9
D.searching
(3)A.nanle
B.access
C.identify
D.find
(4)A.available
B.avail
C.reachable
D.necessary
(5)A.explorer
B.download
C.access
D.browse
答案:(1)D (2)B (3)C (4)A (5)C
解析:互联网是一个信息空间。在外太空中,人类有很多用来操纵、设想、寻路的高智商机器。URIs就是信息空间的指南。
HTML是一种重要的网上数据格式。但不是唯一一种;对于网络协议,HTTP拥有相似地位。但是不像网上数据的格式和网络协议,网络上只有一种命名/寻址技术:URIs。
统一资源定位符(URIs,aka URLs)是一些在网上标识资源的字符串。这些资源包括:文档、图片、可下载文件、服务、电子邮箱以及其他资源。他们使资源在一系列命名机制和访问方法比如HTTP、FTP下变成是可获取的。网上邮件也是靠这种简便方法设定地址的。他们使繁杂的“登录服务器。然后发出命令…”操作变成为一个简单的点击。
它是一个可扩展的技术:现在有多种寻址机制,并且随着时间的过去,更多的技术将会合并。