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） .

（4）处填（）。

A．fixed

B．flexible

C．stable

D．stateless

脾主升清是指

A．喜燥恶湿
B．以升为健
C．运化水液
D．后天之本
E．以上均非