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【单选题】
一个路由器有两个端口,分别接到两个网络,两个网络各有一个主机,IP地址分别为110.25.53.1和110.24.52.6,子网掩码均为255.255.255.0,可分配给路由器两个端口的两个IP地址分别是( )。A.
110.25.52.1和110.24.52.6
B.
111.25.53.1和111.25.53.6
C.
110.25.53.6和110.24.52.1
D.
110.25.53.1和110.24.53.6
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【简答题】Spell the past tense of the word "magic".
【简答题】Spell the past tense of the word "notice".
【单选题】违反本法规定被吊销导游证的导游、领队和受到吊销旅行社业务经营许可证处罚的旅行社的有关管理人员,自处罚之日起未逾 的,不得重新申请导游证或者从事旅行社业务。
A.
一年
B.
二年
C.
三年
D.
四年
【单选题】No light ____ in the house for the past two evenings, one of the neighbors broke in and found the old lady in her chair.
A.
being visible
B.
to be visible
C.
has been visible
D.
having been visible
【单选题】The reason why there still needs improvement in the past view of Archaeopteryx is that
A.
fossils of those earliest birds haven't been discovered yet.
B.
the wishbone they studied is just so-called wishbone.
C.
there was no study of the role of its brain and some faculties in flight.
D.
Archaeopteryx is regarded as the earliest known bird.
【单选题】AIDS is said_______ the biggest health challenge to both men and women in the earth over the past four years.
A.
that it is
B.
to have been
C.
that it has been
D.
to be
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