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【单选题】
若一个非连通的无最多有28条边，则该无至少有（ ）个顶点。A.
6
B.
7
C.
8
D.
9
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】A great person is someone who devotes his/her life ______others.
A.
to help
B.
helping
C.
to helping
D.
helped
【简答题】How old was the washwoman when she started washing for the narrator’s family? What did she look like?
【单选题】What did the founder of the cluv use to do?
A.
Washing dishes
B.
Being chef
C.
Selling lunch boxes
D.
Selling newpapers
【单选题】_____ Great someone you have just been introduced to.
A.
This is Mrs Davis. She is in charge of exports.
B.
Hi! How are you?
C.
Good morning. Pleased to meet you.
D.
Nice to meet you at last!
E.
Good to see you again!
F.
I'm sorry I didn't catch your name. Can you say it again?
【单选题】A great person is someone who devotes his/her life _____ others. [ ]
A.
to help
B.
helping
C.
to helping
D.
help
【单选题】What did the founder of the club use to do?
A.
Washing dishes
B.
Being chef
C.
Selling lunch boxes
D.
Selling newspapers
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