以下有关接入技术的说法中，错误的是______。

A．数字用户线路xDSL接入技术在性能和可靠性上有明显的优势

B．HFC的优势是频带宽、速度快

C．宽带无源光网络可适应不同带宽、传输质量的需求，不易拥塞，接入距离长。

D．光纤同轴电缆混合网HFC是一个单向传输系统

Originally introduced by Netscape Communications, （66） are a general mechanism which HTTP Server side applications, such as CGI （67） , can use to both store and retrieve information on the HTTP （68） side of the connection. Basically, Cookies can be used to compensate for the （69） nature of HTTP. The addition of a simple, persistent, client-side state significantly extends the capabilities of WWW-based （70） .

A．graphics

B．processes

C．scripts

D．texts