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．fixed

B． flexible

C． stable

D．stateless

中国证券监督管理委员会的主要职能包括（）

A.建立统一的证券期货监管体系

B.对证券期货监管机构实行垂直领导

C.提高信息披露质量

D.注重证券期货市场金融风险的防范和化解工作