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【简答题】
He bent down and the fire with a poker. 2. The girl this ring from her mother. 3. I what I said is true. 4. They each other for victory . 5. Her heart was breaking, and she had no one to in. 6. He his willingness with a nod of his head. 7. The statue was out of marble. 8. The little boy his fingers with ink. 9. He held the child in fond . 10. The old lady has some habits.
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【简答题】直线趋势延伸法与平滑技术（二次移动平均法和二次指数平滑法）同样是遵循事物发展连续原则，以预测目标时间序列资料呈现有单位时间增（减）量大体相同的长期趋势变动为适用条件的。所以这两种预测方法虽然名称不同，方法本质是一样的，都属于趋势外推法。对此分类观点，请谈谈你的看法。
【单选题】如果随机解释变量与随机干扰项同期相关,则
A.
得到的参数估计量无偏且一致
B.
得到的参数估计量有偏且一致
C.
得到的参数估计量无偏且非一致
D.
得到的参数估计量有偏且非一致