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【单选题】
在 DR 和 BDR 选举出来后, OSPF 网络处于哪种状态( )。A.
exstart
B.
full
C.
loading
D.
exchange
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皮皮学刷刷变学霸
举一反三
【单选题】— You’ve dropped ________ “s” in the word “necessary”. — Oh, ________ letter “s” is doubled.
A.
a; a
B.
a; the
C.
an; the
D.
the; the
【单选题】—You've done very well this time. —It's really kind_______. [ ]
A.
for you to say so
B.
for you saying so
C.
of you to say so
D.
of you saying so
【单选题】―You’ve dropped _______ “s” in the word “success”. ―Oh, _______ letter “s” is doubled.
A.
a; a
B.
a; the
C.
an; the
D.
the; the
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