Originally introduced by Netscape Communications,（1）are a general mechanism which HTTP Server side applications, such as CGI (2) , can use to both store and retrieve information on the HTTP （3） side of the connection. Basically, Cookies can be used to compensate for the （4） nature of HTTP. The addition of a simple, persistent, client-side state significantly extends the capabilities of WWW-based （5）.

1.见题干（）

A. Browsers 

B. Cookies 

C. Connections 

D. Scripts

下图为北宋东京（今开封）示意图，其中设置了两处错误，它们是

A．①②

B．③④

C．①③

D．②④