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【单选题】
在网络的拓扑结构中,只有一个根结点,而其他结点都只有一个父结点的结构称为 ( ) 。A.
星形拓扑
B.
环形拓扑
C.
总线型拓扑
D.
树形拓扑
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反馈参考答案：
举一反三
【简答题】A．Yes ，it is B．Yes ，it isn't C． No ，it is D． No ，it isn't
【单选题】The back garden of our house contains a lawn, ____very pleasant to sit on in summer. A. which is B. which it is C. it is D.where it is
A.
which is
B.
which it is
C.
it is
D.
where it is
【单选题】What chance ______ of taking an earlier plane?
A.
is there
B.
there is
C.
it is
D.
is it
【单选题】In front of the library is a big lawn, _____ very pleasant to sit on in winter. A. which is B. which it is C. it is D. where it is
A.
which is
B.
which it is
C.
it is
D.
where it is
【单选题】—Is it on the drawer? —________. [ ]
A.
Yes, it is
B.
Yes, it isn't
C.
No, it is
D.
No, they aren't
【单选题】— It was cloudy yesterday. —_________ today.
A.
So it is
B.
So is it
C.
Neither it is
D.
Neither is it
【单选题】—Is the clock on the dresser? —_____. I can't see it. [ ]
A.
No, it is
B.
No, it isn't
C.
Yes, it is
D.
Yes, it isn't
【单选题】某一超过10万元以后90万元的火灾险位超赔分保合同,在一次事故中有四个危险单位遭受损失,其损失分别为20万、30万、40万和50万,那么分保接受人分别摊付的金额为( )
A.
10万、20万、30万、40万
B.
20万、30万、40万、50万
C.
10万、20万、30万、30万
D.
20万、30万、40万、0万
【单选题】—Here is your red kite. — . [ ]
A.
It is there
B.
No, it isn't
C.
Yes, it is
D.
Thanks
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