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【简答题】
以下关于包过滤技术与代理技术的比较中，正确的是______。 A．包过滤技术的安全性较弱，代理服务技术的安全性较高 B．包过滤不会对网络性能产生明显影响 C．代理服务技术会严重影响网络性能 D．代理服务技术对应用和用户是绝对透明的 A． B． C． D．
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举一反三
【单选题】Huangshan is a good place to _____.
A.
go sightseeing
B.
go for a sightseeing
C.
go to sightseeing
D.
go in sightseeing
【单选题】Jim is ____ honest boy and he is _____ university student.
A.
an; a;
B.
a; an;
C.
an; an;
D.
a; a;
【单选题】Jim is____ honest boy. We won’t play _____chess with him any more.
A.
an, the
B.
a, /
C.
a, the
D.
an, /
【单选题】I would like ________ to the park tomorrow. Why not _______ with me? [ ]
A.
to go; to go
B.
to go; go
C.
go; to go
D.
go; go
【简答题】The bomb will ____ the moment it is touched. A) go on B) go out C) go off D) go over
【单选题】—It's time for us _____ home. —Let's _____. [ ]
A.
go ; go
B.
to go; go
C.
go; to go
D.
to go; to go
【简答题】A．go about B．go over C．go in for D．go through
【单选题】—It's time for us home. —Let's . [ ]
A.
go / go
B.
to go / go
C.
go / to go
D.
to go to / to go
【简答题】A．go about B．go over C．go for D．go through
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