题目内容

---- ____ George this morning? ---- Not yet, but he is sure to be here before noon. (2001)

A. Will you see
B. Did you see
C. Do you see
D. Have you seen

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A. take
B. took
C. are taking
D. were taking

A. 全部已读
B. 全部未读
C. 部分已读

A. 对于自变量x的一个给定值，求出因变量y的平均值
B. 对于自变量x的一个给定值，求出因变量y的个别值
C. 对于因变量y的一个给定值，求出自变量x的平均值
D. 对于因变量y的一个给定值，求出自变量x的个别值

AAA
BBBB
CCC
DDD