下面正确的URL地址是（ ）。
A、Get://www.solt.com/about.html
B、ftb:/ftb.tsinghua.edu.cn
C、
http://www.tsinghua.edu.cn
D、http:www.bhu.edu.cn

A．Yes, but you have to organize a meeting at first
B．No, you should never use it
C．Yes, just walk in and use it
D．No, you should book the room in advance.