When you think of the Internet, you probably think of ".com." Just what do those three let

Question

When you think of the Internet, you probably think of ".com." Just what do those three letters at the end of a World Wide Web address mean? Every computer that hosts data on the Internet has a(71)numerical address. For example, the numerical address for the White House is 198.137.240.100. But since(72)people want to remember long strings of numbers, the(73)was developed. It is a critical part of the Internet's technical infrastructure, correlates a numerical address to a word. To(74)the White House website, you could type its numerical address into the address box of your web browser. But most people prefer to use "www. whitehouse. gov." In this case, the domain name is(75).

A．unique

B．isolated

C．similar

D．same

Answer 1

正确答案：A
解析：(71)～(75)当你想起因特网时，你可能就会想起“.com”。那么，这三个字母在万维网(WWW)中地址最后是什么含义呢?在因特网上，每一台主机都有一个独一无二的(unique)数字的地址。例如，白宫的数字地址就是198.137.240.100。但由于几乎没有(few)人希望记住很长的数字串，城名系统(DNS)就被开发出来了。它是因特网技术基础的重要组成部分，将数字与单词联系在一起。如果要访问(access)白宫的Web站点，你可以在你的浏览器的地址框中输入它的数字地址，但更多的人喜欢使用“www.whitehouse.gov”。在这种情况下，其域名是whitehouse.gov。