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第1题

A child is a believing creature. A. Children always want adults to believe them. B. What a child says is to be believe
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第2题

As far as I could tell, he had never done one happy, noisy kid thing. A. As far as I could tell, he had never done one
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第3题

类型随机抽样的优点有（ ） A.能使样本在总体的分布比较均匀 B.按各类型的分布特征确定样本，增强样本对总体的代表性 C.提高了样本指标推断总体指标的抽样的精确度 D.有利于了解总体各类别的情况
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第4题

The almost bare sheets in the file mocked the effort. A. She tried in vain to write the obituary. B. She made great ef
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