APACHE如何在一个站点绑定多个域名？

<VirtualHost *:80>
ServerAdmin i@test.com
DocumentRoot /www/test.com
ServerName www.test.com
</VirtualHost>

<VirtualHost *:80>
ServerAdmin i@test2.com
DocumentRoot /www/test2.com
ServerName www.test2.com
</VirtualHost>

<VirtualHost *:80>
ServerAdmin i@test3.com
DocumentRoot /www/test3.com
ServerName www.test3.com
</VirtualHost>