题目内容

用n个关键字构造一颗二叉树存储，对于关键字最小的结点，它的.

A. 左指针一定为空
B. 右指针一定为空
C. 左，右指针一定为空
D. 左，右指针均不为空

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设有100个元素，用折半查找法进行查找是，最少比较次数是________。

A. 7
B. 4
C. 2
D. 1

1.What is your friend"s family name if his full name is James Allen Green?

A.James
B.Allen
C.Green
D.James Allen【答案】C

2.— Where"s London? — It’s in _____.

A.China
B.England
C.Australia
D.America

3.What class are you in? I think you are in _______.

A. Class Two, Grade One
B.Grade One, Class Two
C.class two, Grade One
D.grade one, class two