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【单选题】
一棵二高度为h，所有结点的度或为0，或为2，则这棵二最少有( )个结点。【南京理工大学2001一、11(1．5分)】【华中科技大学2007一、4(2分)】【江苏大学2004一、6(2分)】A.
2h
B.
2h-1
C.
2h+1
D.
h+1
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举一反三
【单选题】W hat should one do when friendship changes according to the speaker?
A.
T o accept it and move on.
B.
T o forgive your friends.
C.
T o save your friendship.
D.
T o dwell on the past.
【简答题】If a speaker of one speech variety wants to understand a speaker of another speech variety, understanding is more likely than______.
【单选题】【D6】 SPEAKER A: HAVE YOU MET THE NEW GIRL? SPEAKER B: NO. 【D4】______ SPEAKER A: SHE'S ONE OF THE PRETTIEST GIRLS AT THE SCHOOL. SPEAKER B: WHAT DOES SHE LOOK LIKE? SPEAKER A: 【D5】______ SPEAKER B: HOW...
A.
I THINK THAT I HAV E.
B.
WHAT ABOUT HER FACIAL FEATURES?
C.
WELL, SHE'S QUITE SHORT.
D.
HAVE YOU?
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