某公司局域网防火墙由包过滤路由器R和应用网关F组成，如图所示。下面描述错误的是______。
[*]

A．可以限制计算机c只能访问Internet上在TCP端口80上开放的服务
B．可以限制计算机A仅能访问以“202”为前缀的IP地址
C．可以使计算机B无法使用FTP协议从Internet上下载数据
D．计算机A能够与膝上型计算机建立直接的TCP连接

The National Park, _____ with cherry tree flowers, looks as though it is covered with pink snow. [ ]

A. covering

B. covered

C. being covered

D. having covered