I want to go outside _________ play on the snow.[ ]
A. do
B. to
C. /
答案:B
当路由表中没有到某一特定网络或特定主机地址的路由时,在使用______的情况下,路由选择例程就可以把数据报发到这个路由上。
--- Alan?
--- ______? You’ve rung me three times today!
A.What’s yours
B.What’s it this time
C.How about you
D.How’s that