He is the only one of those clerks ________ to the important conference.

A．who was inviting

B．who were invited

C．who has been invited

D．who have been invited.

关于一元线性回归的预测顺序正确的是（）。

A.输入历史统计数据→回归检验→预测结果分析→计算

B.输入历史统计数据→计算→回归检验→输出预测结果分析

C.输入历史统计数据→计算回归参数→回归检验→计算→预测结果分析→输出预测结果分析

D.输入历史统计数据→计算回归参数→计算→回归检验→预测结果分析→输出预测结果分析