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Please hand () your homework in time .

A. on
B. out
C. in

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It will take us () hour to get there.

A. a
B. two
C. an

A well () job description can answer a lot of questions from job seekers.

A. written
B. write
C. wrote

计算题:某地高校教育经费(x)与高校学生人数(y)连续六年的统计资料如表:要求:①建立回归直线方程②估计教育经费为500万元的在校学生数。

计算题:某单位职工人数和工资总额资料如表:要求:对该单位工资总额变动进行因素分析。

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